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HS50 1K J Equivalent & Substitute Parts
Part Overview
The HS50 1K J is a 1 kOhms ±5% 50W wirewound chassis mount resistor manufactured by Ohmite in the ARCOL HS series. This component is classified as Active product status with ROHS3 compliance and REACH unaffected certification. Substitute parts are necessary when addressing specific application requirements such as tighter tolerance specifications, reduced power dissipation needs, or alternative sourcing for inventory optimization.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resistance | 1 kOhms |
| Tolerance | ±5% |
| Power Rating | 50W |
| Composition | Wirewound |
| Temperature Coefficient | ±25ppm/°C |
| Coating/Housing Type | Aluminum |
| Mounting Feature | Flanges |
| Lead Style | Solder Lugs |
| Package/Case | Axial, Box |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitution eligibility for the HS50 1K J is determined by the following core parameters: resistance value (1 kOhms), composition (wirewound), housing type (aluminum), mounting feature (flanges), lead style (solder lugs), and package configuration (axial, box). All substitute parts maintain these core specifications.
Substitute parts are grouped into two categories based on allowed parameter variations:
Category 1: Same Power Rating (50W) with Tolerance Variation
- HS50 1K F: Maintains 50W power rating with tighter ±1% tolerance
Category 2: Reduced Power Rating (25W) with Tolerance Options
- HS25 1K J: 25W power rating with ±5% tolerance
- HS25 1K F: 25W power rating with ±1% tolerance
All substitutes maintain identical resistance value, temperature coefficient, aluminum housing, flange mounting, solder lug leads, and axial box package configuration.
Parameter Comparison
| Part Number | Manufacturer | Resistance | Tolerance | Power (W) | Temperature Coefficient | Housing Type | Mounting Feature | Lead Style | Package/Case | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|---|
| HS50 1K J | Ohmite | 1 kOhms | ±5% | 50 | ±25ppm/°C | Aluminum | Flanges | Solder Lugs | Axial, Box | ROHS3 Compliant |
| HS50 1K F | ARCOL | 1 kOhms | ±1% | 50 | ±25ppm/°C | Aluminum | Flanges | Solder Lugs | Axial, Box | RoHS Compliant |
| HS25 1K J | ARCOL | 1 kOhms | ±5% | 25 | ±25ppm/°C | Aluminum | Flanges | Solder Lugs | Axial, Box | RoHS Compliant |
| HS25 1K F | Ohmite | 1 kOhms | ±1% | 25 | ±25ppm/°C | Aluminum | Flanges | Solder Lugs | Axial, Box | ROHS3 Compliant |
Engineering Selection Recommendations
HS50 1K F Selection: Use when circuit design requires tighter tolerance specification (±1% vs ±5%) while maintaining the original 50W power rating. Both ROHS3 and RoHS compliance certifications are available across manufacturers.
HS25 1K J or HS25 1K F Selection: Use when application thermal or space constraints permit reduced power dissipation (25W vs 50W). HS25 1K J maintains original ±5% tolerance, while HS25 1K F provides ±1% tolerance. Both are RoHS compliant; HS25 1K F carries ROHS3 certification.
All substitute parts maintain identical resistance value, temperature coefficient, aluminum housing construction, flange mounting configuration, and solder lug termination. Dimensional differences exist only in length and width; height remains constant at 0.583" (14.80mm) across all variants.
Frequently Asked Questions (FAQ)
Q: Can HS25 1K J or HS25 1K F be used as direct replacements for HS50 1K J?
A: HS25 variants are suitable only when circuit design permits 25W power dissipation instead of 50W. Verify that the application does not require the full 50W power rating before substitution.
Q: What is the difference between HS50 1K J and HS50 1K F?
A: Both maintain 50W power rating and identical physical dimensions. HS50 1K F provides ±1% tolerance compared to HS50 1K J's ±5% tolerance. Selection depends on circuit tolerance requirements.
Q: Are all substitute parts mechanically compatible?
A: All parts share identical height (0.583"), aluminum housing, flange mounting, and solder lug leads. HS25 variants have reduced length (1.075" vs 1.933") and increased width (1.102" vs 0.559"). Verify PCB layout accommodates dimensional variations before substitution.
Q: What compliance certifications apply to each part?
A: HS50 1K J and HS25 1K F carry ROHS3 compliance. HS50 1K F and HS25 1K J carry RoHS compliance. All parts are REACH unaffected or vendor undefined. Verify compliance requirements for your application.
Q: Can tolerance be upgraded from ±5% to ±1% without affecting other specifications?
A: Yes. HS50 1K F and HS25 1K F provide ±1% tolerance while maintaining all other electrical and mechanical specifications of their respective power-rated counterparts.
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