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Equivalent & Substitute Parts for Ohmite 810F5R0E
Part Overview
The Ohmite 810F5R0E is an active wirewound chassis mount resistor rated at 5 Ohms ±1% with 10W power dissipation capability. This Metal-Mite®89 series component is designed for applications requiring precision current limiting, load balancing, and thermal management in industrial and electronic equipment. The part is ROHS3 compliant and operates across a wide temperature range from -55°C to 275°C. Equivalent and substitute parts are identified to support procurement flexibility, inventory optimization, and supply chain continuity.
Substiute Parts
Key Parameters
| Parameter | Specification |
|---|---|
| Resistance Value | 5 Ohms |
| Tolerance | ±1% |
| Power Rating | 10W |
| Composition | Wirewound |
| Temperature Coefficient | ±50ppm/°C |
| Operating Temperature Range | -55°C to 275°C |
| Mounting Feature | Flanges with Solder Lugs |
| Housing Type | Aluminum |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitute parts for the 810F5R0E are qualified based on the following electrical and mechanical parameters:
Primary Substitution Criteria:
- Resistance value: 5 Ohms
- Tolerance: ±1%
- Composition: Wirewound
- Temperature coefficient: ±50ppm/°C
- Mounting feature: Flanges with solder lugs
- Housing type: Aluminum
- RoHS compliance: ROHS3 Compliant
Allowable Variations:
- Power rating: Equal to or greater than 10W
- Operating temperature range: Minimum -55°C to 200°C (275°C preferred)
- Physical dimensions: Minor variations acceptable within chassis mount standards
- Packaging format: Tray or Bulk
The substitute parts KAL10FB5R00, UAL10-5RF8, and HSA55R0F meet these criteria with the following distinctions:
KAL10FB5R00 (Stackpole Electronics Inc): Exceeds power rating at 12.5W with moisture-resistant features.
UAL10-5RF8 (Riedon): Matches 10W rating with additional safety certifications including flame proof and pulse withstanding capabilities.
HSA55R0F (TE Connectivity Passive Product): Matches 10W rating with compact form factor; operates to 200°C maximum.
Parameter Comparison
| Parameter | 810F5R0E (Ohmite) | KAL10FB5R00 (Stackpole) | UAL10-5RF8 (Riedon) | HSA55R0F (TE Connectivity) |
|---|---|---|---|---|
| Resistance | 5 Ohms | 5 Ohms | 5 Ohms | 5 Ohms |
| Tolerance | ±1% | ±1% | ±1% | ±1% |
| Power Rating | 10W | 12.5W | 10W | 10W |
| Temperature Coefficient | ±50ppm/°C | ±50ppm/°C | ±50ppm/°C | ±50ppm/°C |
| Operating Temperature Range | -55°C to 275°C | -55°C to 275°C | -55°C to 275°C | -55°C to 200°C |
| Composition | Wirewound | Wirewound | Wirewound | Wirewound |
| Mounting Feature | Flanges | Flanges | Flanges | Flanges |
| Housing Type | Aluminum | Aluminum | Aluminum | Aluminum |
| Lead Style | Solder Lugs | Solder Lugs | Solder Lugs | Solder Lugs |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Packaging | Tray | Bulk | Bulk | Tray |
Engineering Selection Recommendations
All substitute parts maintain active product status and ROHS3 compliance, ensuring regulatory alignment with current manufacturing standards.
KAL10FB5R00 is suitable for applications requiring enhanced power dissipation margin or moisture-resistant performance. The 12.5W rating provides additional thermal headroom beyond the 10W specification.
UAL10-5RF8 is appropriate for safety-critical applications where flame proof and pulse withstanding certifications are required. The current sense feature supports precision measurement applications.
HSA55R0F is recommended for space-constrained designs due to its compact 0.669" x 0.669" footprint. Applications operating exclusively below 200°C may utilize this part without thermal derating.
Selection should be based on specific application requirements including thermal environment, safety certifications, physical space constraints, and packaging preferences.
Frequently Asked Questions (FAQ)
Q: Can KAL10FB5R00 be used as a direct replacement for 810F5R0E?
A: Yes. The KAL10FB5R00 meets all electrical specifications including 5 Ohms ±1% resistance, ±50ppm/°C temperature coefficient, and -55°C to 275°C operating range. The higher 12.5W power rating is compatible with 10W applications. Mechanical mounting via flanges and solder lugs is identical.
Q: What is the primary difference between UAL10-5RF8 and the original 810F5R0E?
A: The UAL10-5RF8 includes additional safety certifications (flame proof, pulse withstanding) and current sense capability. Electrical and thermal specifications are equivalent. Physical dimensions vary slightly within acceptable chassis mount tolerances.
Q: Is HSA55R0F suitable for high-temperature applications?
A: The HSA55R0F operates to a maximum of 200°C, compared to 275°C for the 810F5R0E. Applications requiring operation above 200°C must use 810F5R0E, KAL10FB5R00, or UAL10-5RF8.
Q: Are all substitute parts available in the same packaging format?
A: No. The 810F5R0E and HSA55R0F are supplied in Tray packaging, while KAL10FB5R00 and UAL10-5RF8 are supplied in Bulk packaging. Packaging selection should align with procurement and assembly requirements.
Q: Do all parts meet ROHS3 compliance?
A: Yes. All listed parts including 810F5R0E, KAL10FB5R00, UAL10-5RF8, and HSA55R0F are ROHS3 compliant.
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