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WHBR50FE Equivalent & Substitute Parts
Part Overview
The WHBR50FE is a 500 mOhms ±1% 1W axial wirewound through-hole resistor manufactured by Ohmite. This component is classified as Active and is in current production. Equivalent and substitute parts are identified when component availability is limited, procurement lead times are extended, or design flexibility permits alternative sourcing from qualified manufacturers while maintaining electrical and mechanical compatibility.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resistance | 500 mOhms |
| Tolerance | ±1% |
| Power Rating | 1W |
| Composition | Wirewound |
| Package Type | Axial |
| Temperature Coefficient | ±90ppm/°C |
| RoHS Status | ROHS3 Compliant |
| Number of Terminations | 2 |
Substitute Part Grouping Explanation
Substitution of the WHBR50FE is permissible when the following electrical and mechanical parameters are maintained:
- Resistance value: 500 mOhms
- Tolerance: ±1%
- Power rating: 1W
- Composition: Wirewound
- Package configuration: Axial through-hole
- Temperature coefficient: ±90ppm/°C
- RoHS compliance: ROHS3 Compliant
Substitute parts are grouped by manufacturer and packaging format. Direct substitutes from Ohmite (WHBR50FET, 41FR50E) maintain identical electrical specifications. Cross-manufacturer substitutes from Vishay Dale (ALSR01R5000FE12, RS01AR5000FE70) meet all core electrical parameters and provide extended operating temperature ranges and moisture-resistant construction as additional features.
Parameter Comparison
| Part Number | Manufacturer | Resistance | Tolerance | Power (W) | Temp Coeff | Operating Temp | Package | Size (mm) | RoHS Status | Packaging Format |
|---|---|---|---|---|---|---|---|---|---|---|
| WHBR50FE | Ohmite | 500 mOhms | ±1% | 1 | ±90ppm/°C | -55°C ~ 150°C | Axial | 3.30 x 7.00 | ROHS3 | Bulk |
| WHBR50FET | Ohmite | 500 mOhms | ±1% | 1 | ±90ppm/°C | -55°C ~ 150°C | Axial | 3.30 x 7.00 | ROHS3 | Cut Tape |
| 41FR50E | Ohmite | 500 mOhms | ±1% | 1 | ±90ppm/°C | Not Specified | Axial | 3.20 x 11.10 | RoHS | Bulk |
| ALSR01R5000FE12 | Vishay Dale | 500 mOhms | ±1% | 1 | ±90ppm/°C | -65°C ~ 250°C | Axial | 2.79 x 10.31 | ROHS3 | Bulk |
| RS01AR5000FE70 | Vishay Dale | 500 mOhms | ±1% | 1 | ±90ppm/°C | -65°C ~ 250°C | Axial | 2.39 x 10.31 | ROHS3 | Cut Tape |
Engineering Selection Recommendations
All listed substitute parts maintain Active product status and meet ROHS3 compliance requirements. Selection among substitutes is determined by application-specific constraints:
WHBR50FE and WHBR50FET are direct Ohmite equivalents differing only in packaging format (bulk versus cut tape). These are preferred when design qualification is specific to Ohmite series components.
41FR50E is an Ohmite alternative with different physical dimensions (3.20mm diameter, 11.10mm length versus 3.30mm x 7.00mm). This part is suitable when PCB layout accommodates the larger form factor.
ALSR01R5000FE12 and RS01AR5000FE70 are Vishay Dale alternatives offering extended operating temperature range (-65°C to 250°C) and moisture-resistant construction. These are applicable in applications requiring enhanced thermal performance or humid environments. Physical dimensions differ from the primary part; PCB layout compatibility must be confirmed.
Frequently Asked Questions (FAQ)
Q: Can WHBR50FET be used as a direct replacement for WHBR50FE?
A: Yes. Both parts are manufactured by Ohmite with identical electrical specifications (500 mOhms, ±1%, 1W, ±90ppm/°C) and physical dimensions (3.30mm x 7.00mm). The difference is packaging format: WHBR50FE is supplied in bulk, while WHBR50FET is supplied in cut tape. Electrical performance and PCB mounting are equivalent.
Q: Are Vishay Dale parts (ALSR01R5000FE12, RS01AR5000FE70) compatible with the WHBR50FE?
A: Electrical compatibility is confirmed: both manufacturers' parts meet 500 mOhms ±1% 1W specifications with ±90ppm/°C temperature coefficient. Physical dimensions vary; PCB layout must accommodate the different form factors. Vishay Dale parts provide extended operating temperature (-65°C to 250°C) and moisture-resistant features not present in the Ohmite part.
Q: What is the difference between 41FR50E and WHBR50FE?
A: Both are Ohmite 500 mOhms ±1% 1W axial wirewound resistors. The 41FR50E has different physical dimensions (3.20mm diameter, 11.10mm length) compared to WHBR50FE (3.30mm diameter, 7.00mm length). Electrical performance is identical. Substitution requires confirmation that PCB layout accommodates the larger component.
Q: Which substitute part has the widest operating temperature range?
A: ALSR01R5000FE12 and RS01AR5000FE70 (both Vishay Dale) operate from -65°C to 250°C, compared to WHBR50FE at -55°C to 150°C. Selection depends on application thermal requirements.
Q: Are all substitute parts RoHS compliant?
A: WHBR50FE, WHBR50FET, ALSR01R5000FE12, and RS01AR5000FE70 are ROHS3 Compliant. 41FR50E is RoHS Compliant. All parts meet regulatory requirements for lead-free construction.
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