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Home > Products > Integrated Circuits (ICs) > Specialized ICs > SOMC-1603-472G
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SOMC-1603-472G

Manufacturer Part Number:
SOMC-1603-472G
Manufacturer / Brand
VISHAY
Part of Description:
VISHAY SMD
Datasheets:
Lead Free Status / RoHS Status:
RoHS Compliant
Stock Condition:
New original, 5338 pcs Stock Available.
ECAD Model:
Ship From:
Hong Kong
Shipment Way:
DHL/Fedex/TNT/UPS

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Part Number SOMC-1603-472G
Manufacturer / Brand VISHAY
Stock Quantity 5338 pcs Stock
Category Integrated Circuits (ICs) > Specialized ICs
Description VISHAY SMD
Lead Free Status / RoHS Status: RoHS Compliant
RFQ SOMC-1603-472G Datasheets SOMC-1603-472G Details PDF
SOMC-1603-472G Details PDF for FR.pdf
SOMC-1603-472G Details PDF for KR.pdf
SOMC-1603-472G Details PDF for DE.pdf
SOMC-1603-472G Details PDF for IT.pdf
SOMC-1603-472G Details PDF for ES.pdf
Condition New Original Stock
Warranty 100% Perfect Functions
Lead Time 2-3days after payment.
Payment Credit Card / PayPal / Telegraphic Transfer (T/T) / Western Union
Shipping by DHL / Fedex / UPS / TNT
Port HongKong
RFQ Email Info@IC-Components.com

Packaging & ESD

Industry-standard static shielding packaging is used for electronic components.Anti-static, light-transparent materials allow easy identification of ICs and PCB assemblies.
The packaging structure provides electrostatic protection based on Faraday cage principles.This helps protect sensitive components from static discharge during handling and transportation.


All products are packed in ESD-safe anti-static packaging. Outer packaging labels include part number, brand, and quantity for clear identification. Goods are inspected prior to shipment to ensure proper condition and authenticity.

ESD protection is maintained throughout packing, handling, and global transportation. Secure packaging provides reliable sealing and resistance during transit. Additional cushioning materials are applied when required to protect sensitive components.

QC(Part Testing by IC Components)Quality Warranty

We can offer worldwide express delivery service, such as DHLor FedEx or TNT or UPS or other forwarder for shipment.

Global Shipment by DHL/FedEx/TNT/UPS

Shipping Fees reference DHL/FedEx
1). You can offer your express delivery account for shipment, ifyou haven’t any express account for shipment, we can offer our account inadvance.
2). Use our account for shipment, Shipment charges(Reference DHL/FedEx, Different Countries has different price.)
Shipment charges： (Reference DHL and FedEX)
Weight(KG): 0.00kg-1.00kg Price(USD$) : USD$60.00
Weight(KG): 1.00kg-2.00kg Price(USD$) : USD$80.00
* The price of cost is reference with DHL/FedEx. The detail charges, please contact us. Different country the express charges are different.



We accept the payment terms: Telegraphic Transfer(T/T), Credit Card, PayPal and Western Union.

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PayPal Bank Information:
Company Name : IC COMPONENTS LTD
Paypal ID: Info@IC-Components.com

BANK TRANSFAR (Telegraphic Transfer)

Payment For Telegraphic Transfers:
Company Name : IC COMPONENTS LTD Beneficiary Account Number : 549-100669-701
Beneficiary Bank name : Bank of Communications (Hong Kong) Ltd Beneficiary Bank Code : 382 (for local payment)
Beneficiary Bank SWIFT : COMMHKHK
Beneficiary Bank Address : Tsuen Wan Market Street Branch 53 Market Street, Tsuen Wan N.T., Hong Kong

Any inquires or questions, please kindly contact us Email: Info@IC-Components.com


Frequently Asked Questions

Can the SOMC-1603-472G be used in high-vibration industrial environments without additional mechanical reinforcement?
The SOMC-1603-472G is an SMD component with a standard surface-mount package designed for typical PCB assembly processes. While it meets baseline mechanical robustness for commercial applications, prolonged exposure to high-vibration environments—such as those found in heavy machinery or automotive under-hood systems—may risk solder joint fatigue over time. For such conditions, supplementary measures like conformal coating, underfill, or strain relief routing are recommended to maintain long-term reliability.
What are the key considerations when replacing the SOMC-1603-472G with a similar Vishay SMD resistor network in a legacy design?
When substituting the SOMC-1603-472G, ensure the replacement part matches not only resistance value and tolerance but also pinout configuration, thermal coefficient, and package footprint. Vishay’s SOMC series uses a common isolated resistor layout; however, even minor differences in terminal spacing or pad geometry can cause soldering defects or signal integrity issues. Cross-referencing the mechanical drawing and performing a thermal cycling test on the new part is advised before full-scale deployment.
Is the SOMC-1603-472G suitable for precision analog signal conditioning circuits requiring low thermal EMF?
The SOMC-1603-472G is constructed using thick-film technology, which typically exhibits higher thermal EMF compared to thin-film or metal foil alternatives. In precision applications such as sensor front-ends or instrumentation amplifiers, this can introduce drift and offset errors under temperature gradients. For sub-10 µV/°C thermal EMF requirements, consider Vishay’s precision thin-film networks like the ORN series instead.
How does the power rating of the SOMC-1603-472G behave under elevated ambient temperatures in enclosed industrial control panels?
The SOMC-1603-472G has a nominal power rating based on standard PCB thermal conditions (e.g., 70°C free air). In enclosed panels where ambient temperatures exceed 50°C, derating becomes necessary due to reduced heat dissipation. As a rule of thumb, apply a 1.5% derating per degree Celsius above 70°C to avoid premature aging. Thermal modeling or empirical testing under actual operating conditions is recommended for mission-critical systems.
Can the SOMC-1603-472G be directly replaced with a Bourns 472G-series resistor network without PCB layout changes?
Although both parts share the same nominal resistance value and SMD package type, the Bourns 472G may differ in internal resistor isolation, terminal plating, and exact pad dimensions. These discrepancies can affect solder joint formation during reflow and long-term reliability. A side-by-side footprint comparison and thermal profile validation are required before assuming drop-in compatibility.
What configuration options are available for the SOMC-1603-472G in multi-channel digital interface applications requiring pull-up or pull-down networks?
The SOMC-1603-472G is a single-value, isolated resistor network with four independent 4.7 kΩ elements, making it suitable for parallel pull-up/down configurations on I²C, SPI, or GPIO lines. However, its thick-film construction results in higher parasitic capacitance (~1–2 pF per resistor), which may limit effectiveness in high-speed (>10 MHz) digital buses. For faster interfaces, consider lower-capacitance networks or distributed discrete resistors.
Are there known long-term reliability concerns with the SOMC-1603-472G when used in outdoor telecommunications equipment exposed to humidity and thermal cycling?
The SOMC-1603-472G is rated for industrial temperature ranges (-55°C to +125°C) and passes standard moisture sensitivity level (MSL) testing. However, in outdoor enclosures with repeated condensation cycles, moisture ingress at the mold compound interface can lead to resistance drift over years of service. Applying a hydrophobic conformal coating and ensuring proper PCB edge sealing significantly improves field longevity.
How should the SOMC-1603-472G be handled during high-volume pick-and-place assembly to avoid tombstoning or misalignment?
Due to its small SMD form factor and symmetrical construction, the SOMC-1603-472G is susceptible to tombstoning if solder paste deposition is uneven or reflow profiles are unbalanced. Use laser-cut stencils with 1:1 aperture ratios, ensure pad symmetry in the footprint design, and maintain a controlled ramp-soak-spike reflow profile with peak temperatures within ±5°C of the manufacturer’s recommendation to minimize placement defects.
Can the SOMC-1603-472G be used in safety-critical circuits requiring compliance with IEC 60747 isolation standards?
The SOMC-1603-472G is not designed as an isolation component and does not provide galvanic separation between its resistor elements. It lacks reinforced insulation and fails to meet creepage and clearance requirements for safety isolation per IEC 60747. For such applications, use certified isolation amplifiers or optocouplers instead.
What alternatives exist if the SOMC-1603-472G becomes obsolete, and how do they compare in terms of long-term supply stability and performance?
If the SOMC-1603-472G reaches end-of-life, Vishay’s newer TOMC series offers improved stability and tighter tolerances with backward-compatible footprints. Alternatively, Panasonic’s ERJ-120 series provides similar functionality with enhanced surge performance. When migrating, verify electrical matching under actual load conditions and assess second-source availability through authorized distributors to mitigate future supply chain risks.

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