WSC251515R00FEA - 15Ω 1W Wirewound SMD Resistor | Vishay Dale
MPN: WSC251515R00FEA ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.42 | $1.42 |
| 10 | $1.27 | $12.70 |
| 100 | $1.05 | $105.00 |
| 500 | $0.92 | $460.00 |
| 1,000 | $0.78 | $780.00 |
| 2,000 | $0.71 | $1,420.00 |
WSC251515R00FEA Overview
A wirewound surface-mount resistor is a passive component whose resistive element is a coil of fine resistance wire (often a nickel-chromium or copper-nickel alloy such as constantan) bonded to a ceramic substrate, then terminated with metal wraparound or J-lead contacts. Compared to thick-film chip resistors, wirewound SMD parts achieve higher power density, tighter tolerance, lower inductance variation, and superior pulse handling. Within the broader taxonomy, this places the WSC family as a resistor → fixed resistor → wirewound resistor → surface-mount wirewound resistor → power resistor.
Key differentiating specifications include ±1% resistance tolerance, ±50 ppm/°C temperature coefficient (per DigiKey/Mouser listing), 1 W power rating at +70 °C, and an operating temperature range of −65 °C to +275 °C. The device is qualified to AEC-Q200 stress standards for automotive electronics and uses 100 % matte-tin (e3) lead-free terminations that withstand MSL-1 (JEDEC J-STD-020) reflow up to +260 °C.
Typical use cases include current-sensing shunts for BLDC motor drivers, gate-resistor networks in IGBT/SiC switching power stages, in-rush current limiting on DC bus capacitors, snubber discharge paths, and automotive ECU power conditioning. The wirewound construction gives low parasitic reactance variation versus frequency when used within its designed bandwidth, which keeps measurement accurate in switched-mode power loops.
When designing with this part, derate linearly above +70 °C to zero power at +275 °C; do not exceed the 1 W rating at full ambient. Use proper solder pad geometry per the Vishay 2515 land-pattern recommendation to ensure the J-leads form a reliable fillet and to maintain mechanical reliability under thermal cycling.
Drop-in alternatives for WSC251515R00FEA — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
WSC251515R00FEB
✅ Drop-In📋 Reference alternative (not in catalog)
WSC251515R00DEA
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
WSC25151R000FEA
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
WSL251515R00FEA
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
WSC251515R00FEA Maximum Ratings & Electrical Characteristics
| Resistance | 15 Ω |
| Resistance Tolerance | ±1% |
| Power Rating | 1 W (at +70 °C, derated to 0 W at +275 °C) |
| Temperature Coefficient | ±50 ppm/°C |
| Package / Case | 2515 (J-Lead, wirewound chip resistor) |
| Footprint Dimensions | 6.35 mm × 3.81 mm (2515) |
| Mounting Type | Surface Mount (SMD J-lead) |
| Construction | Wirewound, molded thermoset body, alumina substrate |
| Operating Temperature Range | −65 °C to +275 °C |
| Automotive Qualification | AEC-Q200 |
| Termination Finish | Matte tin (e3), lead-free |
| MSL Level | MSL-1 (per JEDEC J-STD-020) |
| Reflow Profile | Compatible with +260 °C peak reflow (per J-STD-020) |
| Features | Pulse-withstanding, automotive grade |
| RoHS Compliance | Compliant (e3 finish) |
| REACH Compliance | Compliant |
| Series | WSC2515 (Vishay Dale wirewound SMD) |
WSC251515R00FEA 2515 (j-lead, wirewound chip resistor) Pin Configuration Guide
Pin configuration for WSC251515R00FEA (2515 (j-lead, wirewound chip resistor) package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for WSC251515R00FEA.
Refer to the datasheet for full pin configuration.
Typical Applications
WSC251515R00FEA is suitable for 6 applications: Automotive ECU Power-Conditioning Resistor, BLDC Motor-Driver Gate-Resistor Network, Snubber and Discharge Resistor for DC Bus, Industrial PLC Output-Stage Current Limiting, In-Rush Current Limiter for Bulk Capacitors, Test and Measurement Equipment Precision Biasing.
Automotive ECU Power-Conditioning Resistor
The WSC251515R00FEA's 1 W continuous dissipation at +70 °C and AEC-Q200 automotive qualification make it an ideal pull-up, pull-down, or gate-resistor for 12 V/24 V automotive ECU power rails. In a typical body-control or engine-management ECU, this 15 Ω wirewound resistor limits inrush to bulk-decoupling capacitors and absorbs transient energy from load-dump events on the 12 V battery bus. The wirewound construction provides superior pulse-withstanding versus a thick-film 2515 chip, while the ±50 ppm/°C temperature coefficient maintains stable bias over the −40 °C to +125 °C automotive under-hood temperature range. The 2515 J-lead footprint enables reflow-compatible assembly.
Recommended
BLDC Motor-Driver Gate-Resistor Network
In three-phase BLDC motor-drive stages, the WSC251515R00FEA serves as a 15 Ω series gate resistor that controls IGBT or MOSFET switching edge rates, limits gate-charge ringing, and damps parasitic gate-oscillation. The 1 W power rating easily handles the 1–3 W peak dissipation that occurs during PWM switching at 20 kHz, and the wirewound construction gives low parasitic inductance variation versus frequency. AEC-Q200 qualification allows deployment in EV traction inverters, electric power-steering controllers, and other automotive motor-drive applications. The 2515 J-lead footprint is compatible with standard SMT reflow lines.
Recommended
Snubber and Discharge Resistor for DC Bus
Across the DC-link capacitor in a switched-mode power supply or inverter, the WSC251515R00FEA functions as an RC snubber discharge resistor that bleeds stored energy when the system is powered down. The 15 Ω value with 1 W rating discharges a 1000 µF capacitor bank from 400 V to safe levels within seconds, and the wirewound construction provides the pulse energy absorption that a thick-film 2515 resistor cannot match. AEC-Q200 qualification supports industrial and automotive use. The 2515 J-lead footprint keeps the snubber network compact on the high-voltage PCB.
Recommended
Industrial PLC Output-Stage Current Limiting
In industrial PLC digital-output modules that switch 24 V inductive loads, the WSC251515R00FEA serves as a series current-limit element that protects the output stage from inrush and short-circuit transients. The 1 W continuous rating and ±50 ppm/°C temperature coefficient keep the bias stable in factory-floor environments from −25 °C to +70 °C, while AEC-Q200 over-qualification provides extra reliability margin. The 2515 J-lead footprint enables high-density SMD assembly on PLC output boards. Wirewound construction gives the pulse-withstanding capability needed for switching inductive loads.
Recommended
In-Rush Current Limiter for Bulk Capacitors
Between a hot-swap controller and its bulk-decoupling capacitor bank, the WSC251515R00FEA acts as a 15 Ω inrush-current limiter that controls the dI/dt during power-up. With 1 W continuous rating, the part handles the brief 50–100 ms inrush pulse that charges the capacitor bank from 0 V to 12 V without overheating, and the wirewound construction absorbs the resulting pulse energy cleanly. AEC-Q200 qualification makes it suitable for automotive and industrial hot-swap designs. The 2515 J-lead footprint is ideal for high-density power-conditioning layouts.
Recommended
Test and Measurement Equipment Precision Biasing
In bench-top and production test equipment, the WSC251515R00FEA provides a precision ±1% 15 Ω reference resistor for current-loop calibrators, 4–20 mA loop testers, and precision shunt-measurement front ends. The ±50 ppm/°C temperature coefficient gives <0.5 % drift over a 100 °C temperature span, preserving calibration accuracy. The 1 W power rating handles continuous 150 mA test-loop currents without derating. AEC-Q200 over-qualification provides excellent long-term stability for laboratory use, and the 2515 J-lead footprint enables compact instrumentation front-end assemblies.
Recommended
Recommended Products Summary
Engineering reference data for WSC251515R00FEA — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | WSC251515R00FEB | WSC251515R00DEA | WSL251515R00FEA |
|---|---|---|---|---|
| Brand | Vishay Dale | Vishay Dale | Vishay Dale | Vishay Dale |
| Package | 2515 J-Lead | 2515 J-Lead - same | 2515 J-Lead - same | 2515 J-Lead - same |
| Resistance | 15 Ω | 15 Ω | 15 Ω | 15 Ω |
| Tolerance | ±1% | ±1% | ±1% | ±1% |
| Power Rating | 1 W | 1 W | 1 W | 1 W |
| Temperature Coefficient | ±50 ppm/°C | ±50 ppm/°C | ±50 ppm/°C | ±75 ppm/°C |
| Construction | Wirewound | Wirewound | Wirewound | Metal Strip |
| Automotive Qualification | AEC-Q200 | AEC-Q200 | AEC-Q200 | AEC-Q200 |
| Pulse Capability | Pulse-withstanding (wirewound) | Pulse-withstanding (wirewound) | Pulse-withstanding (wirewound) | Lower (metal-strip optimized for current sensing) |
| Unit Price (qty 1) | $1.42 | $1.42 | $1.45 | $1.55 |
Key Differentiators
- Wirewound construction with superior pulse-withstanding (vs WSL251515R00FEA (Vishay Dale Power Metal Strip))
- AEC-Q200 automotive-grade qualification (vs Generic 2515 thick-film chip resistor)
- Drop-in replacement for obsoleted WSC0001 family (vs WSC0001 series (obsolete per Vishay PCN-DR-013-2015))
Design Notes
The WSC251515R00FEA is rated 1 W continuous at +70 °C ambient when mounted on the Vishay-recommended 2515 land pattern with a 1 oz copper test board. Above +70 °C, derate linearly to zero power at +275 °C using P(T) = 1 W × (275 °C − T) / 205 °C. At +125 °C under-hood ambient the allowable dissipation is approximately 0.73 W. Ensure your PCB layout provides adequate copper pad area and thermal vias to the inner planes to stay within this envelope; an undersized pad can increase θJA by 30 % and force additional derating.
Use the Vishay-recommended 2515 land pattern (two J-lead pads, typically 1.8 mm × 2.3 mm each, on 4.95 mm pitch) to ensure reliable solder fillet formation. Place the part away from tall adjacent components that shadow heat, and add thermal vias under the pads if the resistor dissipates more than 0.5 W. For through-hole-style wave soldering, the J-lead terminations are reflow-only per the WSC datasheet; do not wave-solder without verifying thermal-mass compatibility.
Do not substitute a 2515 thick-film chip resistor for the WSC251515R00FEA in pulse-withstanding applications — the wirewound construction absorbs significantly more surge energy. Do not exceed the 1 W continuous rating; peaks above this value are only permissible within the pulse curves in the WSC2515 datasheet. Avoid operating above +275 °C — the molded thermoset body and internal solder joints will fail. Confirm the J-lead pad finish matches your PCB surface finish (matte tin is compatible with ENIG and OSP).
Compliance Information
AEC-Q200 qualified per Vishay WSC2515 datasheet and DigiKey listing. AEC-Q100 is not applicable for a passive resistor; AEC-Q200 is the correct automotive standard. RoHS compliant via e3 matte-tin finish. Halogen-free per Vishay resistor series policy.
