DB016040BC80136BJ1

The Vishay Beyschlag DB016040BC80136BJ1 is a feedthrough capacitor designed for high-voltage filtering and EMI suppression in applications where signal lines or power conductors must pass through a conductive barrier while maintaining electromagnetic isolation. This component provides 800 pF capacitance with ±10% tolerance, rated for operation at 3000V DC and capable of handling continuous current up to 5 A. The axial threaded terminal configuration with M4 mounting threads enables secure bolt-mount installation through chassis walls, enclosure panels, or shielded compartments.

Feedthrough capacitors serve a specialized role in electromagnetic compatibility by creating a low-impedance path to ground for high-frequency noise while allowing DC or low-frequency signals to pass through the barrier. The DB016040BC80136BJ1 achieves this through its coaxial construction, where the inner conductor carries the signal current and the outer body connects directly to the mounting surface, providing effective grounding. The 800 pF capacitance value offers filtering characteristics suitable for RF suppression and transient noise attenuation in power distribution systems, instrumentation feedthroughs, and military or aerospace equipment requiring conducted emission control.

The 3 kV voltage rating positions this Vishay component for use in high-voltage power supplies, industrial control systems, medical equipment, and test instrumentation where voltage isolation between functional sections must be maintained. The 5 A current rating accommodates moderate power transmission through the feedthrough while maintaining thermal stability within the -55°C to 100°C operating temperature range. This temperature specification supports deployment in harsh environmental conditions including outdoor installations, automotive underhood applications, and equipment subjected to wide thermal cycling.

Physical dimensions of 34.00 mm diameter by 39.88 mm length reflect the robust construction required for high-voltage operation and mechanical durability. The threaded terminal design provides both electrical connection and structural support, simplifying installation in applications where the feedthrough must support panel weight or withstand vibration. The bulk packaging format is typical for industrial-grade components intended for production integration rather than prototype quantities.

As part of the DB series from Vishay, this feedthrough capacitor represents established technology for noise filtering at voltage barrier crossings. The active product status and availability in original factory stock support ongoing production designs and field service requirements. While the component carries RoHS non-compliant status, its continued availability addresses legacy equipment maintenance and applications in sectors where RoHS exemptions apply. The MSL-1 moisture sensitivity rating eliminates special handling requirements during storage and assembly. ECCN classification EAR99 indicates standard export control status for general commercial components.

When designing EMI filter circuits for industrial equipment, power distribution systems, or RF shielding applications, the need to source alternative components for the DB016040BC80136BJ1 feed through capacitor often arises due to supply chain constraints, lead time considerations, or cost optimization requirements. This Vishay Beyschlag/Draloric/BC Components feed through capacitor, featuring 800 pF capacitance with 3 kV voltage rating and M4 threaded terminal mounting, serves as an EMI suppression element in applications requiring panel-mount filtering. Several manufacturers offer functionally equivalent parts that can substitute for this component, including the EPCOS B84299R0080A000 series, TDK B84299R2080A000, Schaffner FN340-08-20, and Murata KFL21S080GTJC00. Each alternative presents specific electrical characteristics, mechanical dimensions, and terminal configurations that must be evaluated against the original design requirements before implementation.

The DB016040BC80136BJ1 represents a specialized passive component category designed for conducted EMI suppression in power line and signal filtering applications. The capacitance value of 800 pF positions this device in the lower capacitance range typically used for high-frequency noise attenuation rather than bulk energy storage. The 3 kV voltage rating indicates suitability for high-voltage applications including industrial motor drives, medical equipment power stages, and utility-grade power distribution systems where transient voltage protection and isolation between chassis ground and circuit ground are required.

The 5 A current rating defines the maximum continuous current the component can handle through its conductive path without exceeding thermal limits. The axial configuration with M4 threaded terminals provides secure mechanical mounting through metal panels or enclosure walls, establishing a low-impedance connection to chassis ground while maintaining the feed through filtering function. The operating temperature range of -55°C to 100°C covers standard industrial environmental conditions but excludes extended temperature applications such as aerospace or automotive under-hood installations.

The physical dimensions of 34.00 mm diameter and 39.88 mm length establish the required panel cutout and clearance envelope. The bolt mount configuration requires consideration of panel thickness, washer selection, and torque specifications to ensure proper electrical contact and mechanical retention. The ±10% tolerance indicates this component serves in applications where precise capacitance matching is not required, typical for EMI filtering where the effective frequency response depends more on installation parasitic than absolute capacitance value.

The EPCOS B84299R0080A000 series feed through capacitors offer direct functional equivalence with the DB016040BC80136BJ1 in most industrial EMI filtering applications. These components feature 820 pF nominal capacitance, representing a 2.5% deviation from the 800 pF original specification. Given the ±10% tolerance of both components, this minor difference falls within acceptable variation and does not materially affect filter performance in typical conducted emission suppression circuits.

The voltage rating of 3 kV matches the original specification, maintaining equivalent breakdown margin and safety factor for high-voltage applications. The current rating of 5 A provides identical thermal capacity, ensuring no derating is required for existing power distribution designs. The EPCOS series uses M4 threaded terminals with similar physical configuration, allowing direct mechanical interchange without modification to panel cutouts or mounting hardware.

One technical distinction involves the construction methodology. EPCOS feed through capacitors typically employ a ceramic dielectric with silver-palladium electrode system, which may exhibit slightly different impedance characteristics at frequencies above 100 MHz compared to the Vishay component. For applications where filtering effectiveness in the VHF range is validated through conducted emission testing, verification measurements should confirm that the impedance profile remains within acceptable limits. In power line filtering applications operating primarily in the 150 kHz to 30 MHz range, this difference typically has negligible impact on compliance margin.

The operating temperature range of -40°C to 100°C represents a minor reduction in low-temperature capability compared to the -55°C rating of the original component. Applications operating in controlled industrial environments or commercial temperature ranges will not be affected by this specification difference. Systems designed for extreme cold environments such as outdoor telecommunications equipment in arctic climates would require verification that the minimum operating temperature meets environmental specifications.

The TDK B84299R2080A000 feed through capacitor provides a cost-effective alternative when procurement budgets or high-volume production requirements necessitate component cost reduction. This device features 800 pF capacitance with ±20% tolerance, matching the nominal value of the DB016040BC80136BJ1 but with relaxed tolerance specification. The wider tolerance band accommodates larger manufacturing process variation, which enables lower unit cost while maintaining functional performance in applications where precise capacitance control is not required.

The voltage rating of 2.5 kV represents a reduction from the 3 kV specification of the original component. This 500 V difference translates to approximately 17% reduction in voltage capability. For applications where the maximum transient voltage plus safety margin remains below 2 kV, this derating does not compromise design integrity. Power distribution systems operating from 400 VAC three-phase sources typically experience transient voltages in the 1.2 to 1.5 kV range during switching events, leaving adequate margin with the 2.5 kV rated component. Applications subject to lightning-induced transients or operating in utility substations where voltage stress can approach 2.5 kV should not use this alternative without additional circuit protection elements.

The current rating of 6 A exceeds the original 5 A specification by 20%, providing additional thermal margin. This increased current capability can benefit designs where component count reduction or multi-circuit filtering is desired, allowing a single feed through to serve multiple filtered conductors in parallel. The mechanical configuration uses M4 threaded mounting identical to the DB016040BC80136BJ1, maintaining direct physical interchangeability.

The TDK component specifies a typical insertion loss of 30 dB at 100 MHz, which provides quantifiable comparison for high-frequency filtering effectiveness. While the Vishay datasheet does not specify insertion loss, measurement-based validation can confirm whether the TDK device provides equivalent or superior noise suppression in the actual installation environment. The construction uses a Class 1 ceramic dielectric with stable temperature coefficient, appropriate for industrial filtering applications where capacitance drift with temperature does not affect filtering performance significantly.

The Schaffner FN340-08-20 represents a performance-oriented alternative designed for applications requiring validated EMC effectiveness and compliance with stringent emission standards. This feed through capacitor features 1000 pF capacitance, representing a 25% increase over the 800 pF original specification. The higher capacitance value provides enhanced low-frequency filtering effectiveness, improving conducted emission suppression in the 150 kHz to 10 MHz range where many industrial power conversion systems exhibit peak emission levels.

The voltage rating of 3.5 kV exceeds the DB016040BC80136BJ1 specification by 500 V, providing additional safety margin for applications subject to voltage surge conditions or operating with reduced environmental protection. The current rating of 8 A represents a 60% increase over the original 5 A specification, making this component suitable for higher power applications or installations requiring multiple filtered conductors through a single feed through element.

The mechanical configuration differs from the original component in thread size, using M5 mounting rather than M4. This dimensional change requires modification to panel cutouts, increasing the mounting hole diameter from 4.5 mm to 5.5 mm. The body diameter of 36 mm exceeds the 34 mm dimension of the DB016040BC80136BJ1 by 2 mm, requiring verification that adequate panel clearance exists in the installation location. The overall length of 42 mm represents a 2.12 mm increase over the original 39.88 mm specification, which may impact designs with limited depth behind the mounting panel.

The Schaffner component includes insertion loss specifications across frequency, with typical values of 40 dB at 10 MHz and 35 dB at 100 MHz. These documented performance characteristics enable direct comparison with emission testing results, confirming whether the enhanced capacitance and construction provide measurable improvement in filter effectiveness. Applications that previously exhibited marginal compliance or required additional filtering stages may achieve improved results through this substitution, potentially eliminating secondary filter components and reducing overall system cost.

The Murata KFL21S080GTJC00 feed through capacitor targets applications requiring enhanced reliability qualification and extended operational lifespan. This component features 800 pF nominal capacitance with ±10% tolerance, providing exact electrical equivalence with the DB016040BC80136BJ1 for capacitance-dependent circuit parameters. The voltage rating of 3 kV matches the original specification, maintaining equivalent voltage stress capability.

The current rating specification of 4.5 A represents a 10% reduction compared to the original 5 A rating. Applications operating at or near the maximum current limit require evaluation to confirm that thermal dissipation remains within acceptable bounds. For installations where actual current loading remains below 4 A, this specification difference imposes no practical limitation. The lower current rating results from more conservative thermal modeling or reduced thermal mass in the component construction, trading maximum current capability for other performance characteristics such as reduced parasitic inductance or improved frequency response.

The Murata component specifies qualification to AEC-Q200 automotive standards, indicating extended temperature cycling validation, mechanical shock resistance, and moisture resistance testing beyond standard industrial component requirements. While the DB016040BC80136BJ1 serves industrial applications without automotive qualification, the enhanced reliability validation of the Murata device provides additional confidence for medical equipment, aerospace ground support systems, or critical infrastructure applications where failure consequences exceed typical industrial impact.

The physical dimensions of 32 mm diameter and 38 mm length represent slight reductions from the original component envelope. The reduced diameter may require use of adapter hardware or additional washers to maintain proper panel sealing when replacing the larger Vishay device. The M4 threaded terminal configuration matches the original specification, preserving mounting hardware compatibility. The reduced body length by approximately 2 mm may affect designs where component spacing or conductor routing depends on the precise axial dimension of the feed through.

Examining the electrical specifications across all alternatives reveals distinct application-specific advantages. The EPCOS B84299R0080A000 provides the closest electrical match with 820 pF capacitance, 3 kV voltage rating, and 5 A current capability, making it suitable for direct replacement with minimal design validation. The TDK B84299R2080A000 maintains 800 pF capacitance but reduces voltage rating to 2.5 kV while increasing current capability to 6 A, positioning it for cost-sensitive applications with lower voltage stress requirements. The Schaffner FN340-08-20 increases capacitance to 1000 pF with 3.5 kV voltage rating and 8 A current capability, offering enhanced filtering performance and voltage margin at the expense of modified mechanical dimensions. The Murata KFL21S080GTJC00 maintains exact capacitance and voltage specifications but reduces current rating to 4.5 A while adding automotive-grade reliability qualification.

Mechanical compatibility analysis shows that the EPCOS, TDK, and Murata components maintain M4 threading compatible with the original DB016040BC80136BJ1 mounting configuration, while the Schaffner device requires panel modification for M5 threading. Body diameter varies from 32 mm for the Murata component to 36 mm for the Schaffner device compared to the original 34 mm dimension, with corresponding implications for panel clearance requirements. Length variations span from 38 mm to 42 mm compared to the original 39.88 mm specification, affecting rear-panel conductor routing and component spacing in dense installations.

Temperature range specifications show the EPCOS and TDK components rated for -40°C to 100°C operation compared to the -55°C to 100°C range of the original Vishay device, while the Murata component maintains -55°C to 125°C operation extending the high-temperature capability. Applications operating in standard industrial environments will not encounter the -55°C to -40°C difference, while the extended 125°C rating of the Murata device provides additional margin for installations with elevated ambient temperature or insufficient ventilation.

Cost considerations typically position the TDK component as the most economical option due to relaxed tolerance and reduced voltage rating, followed by the EPCOS device as a mid-range choice, with the Schaffner and Murata components commanding premium pricing for enhanced performance and reliability validation respectively. Lead time and availability vary by distributor and region, with the EPCOS and TDK devices generally maintaining broader distribution and shorter procurement cycles compared to the Schaffner and Murata alternatives which may require extended lead times for volume orders.

Verifying equivalent performance after component substitution requires systematic evaluation of key electrical and thermal parameters under actual operating conditions. For the EPCOS B84299R0080A000 replacement scenario, validation should commence with impedance measurement across the frequency range of interest. Using a vector network analyzer or impedance analyzer, measure the feed through's insertion loss from 150 kHz to 100 MHz with the component installed in the actual panel mounting configuration. The impedance profile should exhibit similar resonant frequency and maintain insertion loss within 3 dB of the original DB016040BC80136BJ1 measurements at frequencies where EMC compliance margin is limited.

Thermal performance verification addresses whether the current rating translates to equivalent temperature rise under actual load conditions. With the system operating at maximum continuous current, measure the feed through body temperature using a contact thermocouple or thermal imaging camera after reaching thermal equilibrium, typically requiring 30 to 60 minutes of operation. The temperature rise above ambient should remain below 40°C at rated current for components specifying 100°C maximum operating temperature, providing adequate margin below the thermal limit. If temperature rise exceeds this threshold with the EPCOS replacement, evaluate whether actual current draw remains within the 5 A rating or whether thermal coupling to the mounting panel requires improvement through increased contact area or thermal interface material.

Voltage stress validation confirms adequate dielectric strength under actual transient conditions. While routine testing should not subject components to voltage levels approaching breakdown, verification that transient voltage conditions remain well below the 3 kV rating provides confidence in long-term reliability. Using a high-voltage differential probe, capture the maximum voltage excursion across the feed through during system start-up, load switching, and fault conditions. Transient voltages should remain below 50% of the voltage rating under normal operating conditions, with excursions to 70% of rating considered acceptable for infrequent fault or switching events. If measured transients approach 80% of the voltage rating, investigate whether circuit protection devices such as metal oxide varistors or transient voltage suppressors should be added to limit stress on the feed through capacitor.

EMC compliance verification represents the definitive validation method, confirming that filter performance meets regulatory requirements with the substitute component installed. Conducting a conducted emissions measurement according to CISPR 11, CISPR 22, or applicable standard verifies that emission levels remain within limits across the 150 kHz to 30 MHz frequency range. Particular attention should focus on frequency bands where the original design exhibited peaks near the compliance limit, as these represent areas where minor impedance changes could shift the system out of compliance. If conducted emissions increase by more than 3 dB at any discrete frequency or if new spectral peaks appear above the limit line, further investigation is required to determine whether the substitute component introduces undesired resonances or whether additional filtering stages are necessary.

Selecting the optimal replacement for the DB016040BC80136BJ1 feed through capacitor depends on prioritizing application-specific requirements across electrical performance, mechanical compatibility, cost constraints, and reliability expectations. Applications where electrical equivalence takes precedence with minimal design validation effort should select the EPCOS B84299R0080A000 based on its closest specification match including 3 kV voltage rating, 5 A current capability, and M4 threaded mounting requiring no mechanical modification. The minor capacitance difference of 820 pF versus 800 pF falls within the combined tolerance bands and imposes no practical limitation on EMI filter performance.

Cost-sensitive designs operating in lower voltage environments benefit from the TDK B84299R2080A000, accepting the reduced 2.5 kV voltage rating in exchange for lower component cost while gaining additional current capacity at 6 A. This selection requires verification that maximum transient voltage including safety margin remains below 2 kV, making it suitable for 230 VAC single-phase or 400 VAC three-phase industrial applications with standard circuit protection. Projects operating in high-voltage distribution systems or subject to frequent lightning exposure should not use this alternative without additional voltage clamping protection.

Applications requiring improved EMC performance or exhibiting marginal compliance with the original component justify the Schaffner FN340-08-20 despite its requirement for panel modification to accommodate M5 threading and larger body dimensions. The increased 1000 pF capacitance and validated insertion loss specifications provide quantifiable improvement in conducted emission suppression, potentially eliminating the need for additional filter stages or enabling compliance in challenging electromagnetic environments. The enhanced voltage and current ratings of 3.5 kV and 8 A respectively add margin for voltage surge conditions and higher power applications.

Medical equipment, critical infrastructure, and applications demanding extended reliability validation warrant selection of the Murata KFL21S080GTJC00 based on its automotive-grade qualification testing and extended temperature range to 125°C. The slight reduction to 4.5 A current rating requires verification that thermal dissipation remains adequate, but the comprehensive reliability validation provides additional confidence for applications where field failure consequences include safety implications or costly maintenance interventions. The reduced body dimensions may require mechanical adaptation but present no fundamental compatibility barrier.