The Vishay Vitramon VJ0805A1R8BXQCW1BC is a low-capacitance multilayer ceramic capacitor (MLCC) designed for precision applications requiring stable electrical performance across wide temperature ranges. This component delivers 1.8 pF capacitance with a tight ±0.1 pF tolerance in the standard 0805 (2012 metric) surface mount package, measuring 2.00mm × 1.25mm with a maximum thickness of 0.70mm.
Built on C0G (Class I NP0) ceramic dielectric technology, this capacitor exhibits near-zero temperature coefficient behavior across its -55°C to 125°C operating range. The C0G dielectric characteristic means the capacitance remains stable regardless of temperature fluctuations, voltage bias, or frequency changes, making it particularly suitable for RF circuits, timing applications, and precision analog designs where capacitance drift would compromise circuit performance. The ultra-low 1.8 pF value positions this component for high-frequency impedance matching, oscillator circuits, and filter networks where parasitic capacitance must be minimized.
The 10V voltage rating provides adequate headroom for most low-voltage digital and analog circuits while maintaining the compact 0805 footprint. This voltage specification, combined with the tight capacitance tolerance, enables predictable circuit behavior in resonant circuits, tuning networks, and signal coupling applications where even small capacitance variations affect frequency response or phase characteristics.
As part of Vishay's VJ W1BC series, this MLCC utilizes surface mount construction optimized for automated assembly processes. The tape and reel packaging supports high-volume manufacturing with MSL-1 moisture sensitivity rating, eliminating pre-bake requirements and simplifying production logistics. The component maintains RoHS3 compliance for environmentally conscious designs and carries standard EAR99 ECCN classification.
The physical dimensions and mounting configuration suit high-density PCB layouts where board space constraints require miniaturized passive components without sacrificing electrical performance. The 0805 case size strikes a practical balance between assembly reliability and component density, compatible with standard pick-and-place equipment while providing sufficient solder joint area for mechanical stability.
For applications demanding ultra-stable capacitance at low values—such as VCO tuning varactors, antenna matching networks, precision sample-and-hold circuits, or high-speed data transmission line termination—this Vishay component delivers repeatable electrical characteristics with minimal temperature and aging effects. The C0G dielectric construction eliminates the piezoelectric noise and voltage coefficient issues common in higher-permittivity ceramic materials, making it appropriate for low-noise amplifier designs and measurement instrumentation where signal integrity cannot be compromised by passive component nonlinearity.
VJ0805A1R8BXQCW1BC (1)
Finding a Compatible VJ0805A1R8BXQCW1BC Replacement Without Changing RF or Precision Circuit Behavior
When replacing the Vishay Vitramon VJ0805A1R8BXQCW1BC, the challenge is not simply finding another 1.8 pF capacitor. At this capacitance value, small differences in dielectric, tolerance, package geometry, termination style, and parasitic behavior can affect impedance matching, timing accuracy, filter response, or high-frequency tuning.
The most direct listed substitute for VJ0805A1R8BXQCW1BC is:
-
VJ0805A1R8BXAPW1BC
VJ0805A1R8BXAPW1BC
Vishay Vitramon
CAP CER 1.8PF 50V C0G/NP0 0805
6172
Both part numbers belong to the Vishay Vitramon VJ 0805 MLCC family and target the same electrical class: 1.8 pF, tight tolerance, C0G/NP0 ceramic dielectric, and 0805 surface-mount construction. The replacement decision should still verify land pattern compatibility, ordering-code details, reel packaging, termination requirements, and availability before release to production.
What the Vishay Vitramon VJ0805A1R8BXQCW1BC Means in a Replacement Review
The Vishay Vitramon VJ0805A1R8BXQCW1BC is a surface-mount multilayer ceramic capacitor designed for stable, low-capacitance applications. Its key value in circuit design comes from the combination of low capacitance, tight tolerance, and C0G/NP0 dielectric stability.
| Key parameter | VJ0805A1R8BXQCW1BC specification | Replacement relevance |
|---|---|---|
| Manufacturer | Vishay Vitramon | Best replacement path is usually within the same Vishay VJ family to reduce qualification risk |
| Capacitance | 1.8 pF | Must be matched closely in RF, tuning, impedance, oscillator, and filter circuits |
| Tolerance | ±0.1 pF | A replacement with wider tolerance may shift circuit response |
| Rated voltage | 10 V | Replacement voltage rating should be equal or higher unless derating analysis allows otherwise |
| Dielectric | C0G/NP0 | Maintains capacitance stability over temperature and voltage; X7R or Y5V should not be treated as equivalent |
| Package | 0805 / 2012 metric | Affects PCB pad fit, assembly process, and parasitic inductance |
| Dimensions | 2.00 mm x 1.25 mm, thickness max 0.70 mm | Replacement must fit existing SMT footprint and clearance limits |
| Operating temperature | -55°C to +125°C | Suitable for broad industrial and communication environments |
| Packaging | Tape & Reel | Supports automated SMT assembly |
| RoHS / MSL | RoHS3 compliant, MSL 1 | Simplifies storage and compliance handling |
The C0G/NP0 dielectric is one of the main reasons the VJ0805A1R8BXQCW1BC cannot be replaced by a general-purpose ceramic capacitor solely based on capacitance. In low-pF circuits, dielectric absorption, voltage coefficient, and temperature drift can become measurable. A 1.8 pF C0G 0805 capacitor replacement should preserve the stable dielectric class unless the circuit has been revalidated.
Typical applications include RF matching networks, antenna tuning sections, crystal oscillator trimming, high-frequency filters, low-capacitance coupling paths, and precision analog circuits. In these uses, the 0805 package also contributes parasitic inductance and self-resonance behavior, so moving to a different case size such as 0603 or 1206 may require circuit-level validation.
Evaluating VJ0805A1R8BXQCW1BC Equivalent Part Number VJ0805A1R8BXAPW1BC
The listed substitute,
VJ0805A1R8BXAPW1BC
, is the closest candidate because it remains within the Vishay Vitramon VJ0805 series and preserves the same nominal capacitance class, dielectric technology, tolerance class, voltage rating, and physical package family. This makes it a practical first option for a VJ0805A1R8BXQCW1BC replacement review.
VJ0805A1R8BXAPW1BC
Vishay Vitramon
CAP CER 1.8PF 50V C0G/NP0 0805
6172
| Manufacturer | Part Number | Key Specifications | Product Features | Typical Applications | Why It Can Replace the Original Part | Main Differences or Limitations | Recommended Usage |
|---|---|---|---|---|---|---|---|
| Vishay Vitramon |
VJ0805A1R8BXAPW1BC
Vishay Vitramon
CAP CER 1.8PF 50V C0G/NP0 0805
6172
| 1.8 pF, ±0.1 pF, 10 V, C0G/NP0, 0805 / 2012 metric MLCC | Stable Class I ceramic dielectric, low capacitance, tight tolerance, SMT construction, Vishay VJ family device | RF matching, impedance tuning, crystal oscillator load trimming, high-frequency filters, precision low-pF coupling | Same manufacturer family and listed substitute for VJ0805A1R8BXQCW1BC; electrical class aligns with 1.8 pF C0G/NP0 0805 requirements | Ordering-code characters differ from the original; termination, packaging, or internal ordering options should be confirmed against the Vishay datasheet and purchasing documentation | Preferred first-choice replacement when the goal is minimal electrical and mechanical change |
| Vishay Vitramon | VJ0805A1R8BXQCW1BC | 1.8 pF, ±0.1 pF, 10 V, C0G/NP0, 0805 / 2012 metric MLCC | Original specified Vishay Vitramon VJ W1BC series capacitor, tape-and-reel supply, RoHS3 compliant, MSL 1 | Existing production BOMs, approved circuit designs, qualified assemblies | Baseline component for comparison; no design substitution needed when stock is available | Availability, price, or lead-time may require alternate sourcing | Use where the original AVL, qualification record, and supply continuity are already established |
The
VJ0805A1R8BXAPW1BC
should be evaluated as a near-equivalent Vishay Vitramon 1.8 pF C0G 0805 capacitor rather than as an unrelated alternative. Its strongest advantage is that it avoids the usual risks associated with changing manufacturer, dielectric system, or package size. For many assemblies, this reduces the amount of revalidation compared with selecting a capacitor from another MLCC series.
VJ0805A1R8BXAPW1BC
Vishay Vitramon
CAP CER 1.8PF 50V C0G/NP0 0805
6172
However, the different middle ordering code should not be ignored. Vishay MLCC part numbers may encode termination finish, packaging option, voltage, tolerance, dielectric, and series attributes. Before approving
VJ0805A1R8BXAPW1BC
as a direct replacement for VJ0805A1R8BXQCW1BC, confirm the full manufacturer ordering code, reel format, solder finish, and compliance requirements.
VJ0805A1R8BXAPW1BC
Vishay Vitramon
CAP CER 1.8PF 50V C0G/NP0 0805
6172
Engineering Comparison of VJ0805A1R8BXQCW1BC and VJ0805A1R8BXAPW1BC Replacement Options
| Decision factor | VJ0805A1R8BXQCW1BC Original | VJ0805A1R8BXAPW1BC Replacement | Engineering interpretation |
|---|---|---|---|
| Electrical compatibility | 1.8 pF, ±0.1 pF, 10 V, C0G/NP0 | Expected same 1.8 pF, ±0.1 pF, 10 V, C0G/NP0 class | Strong match for circuits where capacitance accuracy and temperature stability define performance |
| Mechanical compatibility | 0805 / 2012 metric, 2.00 mm x 1.25 mm | Same 0805 Vishay VJ package family | Should fit the same PCB footprint, but assembly drawings and land pattern rules should still be checked |
| Performance behavior | Stable Class I dielectric with low drift | Same dielectric class expected | Suitable for RF, timing, and precision networks where X7R-type alternatives would be unsuitable |
| Parasitic impact | Known behavior in existing layout | Similar package and family should provide comparable parasitic profile | Lower substitution risk than changing to another case size or vendor family |
| Reliability and qualification | Original approved device, active status | Same manufacturer family; substitute status supports evaluation | Qualification effort may be reduced but not eliminated for controlled production |
| Package and supply availability | Tape & Reel, original stock may vary | Alternative ordering code may improve sourcing flexibility | Useful when original lead time or allocation limits production planning |
| Cost considerations | Depends on availability and sourcing channel | May vary by reel quantity, stock status, and market supply | Compare total landed cost, not just unit price |
| Advantages | No change to approved BOM when available | Closest listed substitute; same Vishay Vitramon VJ0805 family | Replacement path is straightforward if ordering-code differences are acceptable |
| Limitations | Supply constraints may interrupt builds | Must verify code-level equivalence, termination, and reel details | Not a blind drop-in until procurement and engineering documents are aligned |
| Suitable use case | Existing qualified production | Second-source or substitute BOM position for the same 1.8 pF C0G 0805 requirement | Best suited when maintaining original electrical behavior is the priority |
For a VJ0805A1R8BXQCW1BC alternative part number,
VJ0805A1R8BXAPW1BC
is the most practical candidate because it keeps the replacement inside the same Vishay Vitramon product environment. The main review items are not capacitance or dielectric class, but confirmation of ordering-code details, assembly packaging, and approval documentation.
VJ0805A1R8BXAPW1BC
Vishay Vitramon
CAP CER 1.8PF 50V C0G/NP0 0805
6172
If the capacitor is used in RF matching, oscillator loading, or a tuned filter, the safest workflow is to compare the manufacturer datasheets, confirm footprint and solderability requirements, and test the circuit response with the replacement installed. For less sensitive general-purpose low-pF coupling applications, the same-family substitute may be easier to approve.
For quotations and sourcing support for VJ0805A1R8BXQCW1BC,
VJ0805A1R8BXAPW1BC
, or related Vishay Vitramon replacement capacitors, obtain pricing through IC-Components.com or contact Info@IC-Components.com.
VJ0805A1R8BXAPW1BC
Vishay Vitramon
CAP CER 1.8PF 50V C0G/NP0 0805
6172
