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TWM3J150 Equivalent & Substitute Parts
Part Overview
The TWM3J150 is a 150 Ohm ±5% 3W through-hole resistor with radial leads, manufactured by Ohmite using metal oxide film composition. This component is designed for applications requiring flame-proof and safety-rated resistive elements in high-temperature environments. The TWM3J150 is currently classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and component procurement.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resistance | 150 Ohms |
| Tolerance | ±5% |
| Power Rating | 3W |
| Composition | Metal Oxide Film |
| Package Type | Radial |
| Operating Temperature Range | -55°C to 275°C |
| Temperature Coefficient | ±350ppm/°C |
| Physical Dimensions | 0.492" L x 0.354" W (12.50mm x 9.00mm) |
| Height - Seated (Max) | 1.024" (26.00mm) |
| Number of Terminations | 2 |
| Features | Flame Proof, Safety |
Substitute Part Grouping Explanation
Substitution of the TWM3J150 is determined by strict equivalence across the following critical parameters:
- Resistance value: 150 Ohms
- Tolerance: ±5%
- Power rating: 3W
- Composition: Metal Oxide Film
- Package configuration: Radial with 2 terminations
- Operating temperature range: -55°C to 275°C
- Physical dimensions: 0.492" L x 0.354" W with maximum seated height of 1.024"
- Flame-proof and safety features
The TWM3J150E meets all these criteria and is classified as a direct substitute for the obsolete TWM3J150.
Parameter Comparison
| Parameter | TWM3J150 (Main Part) | TWM3J150E (Substitute) |
|---|---|---|
| Manufacturer | Ohmite | Ohmite |
| Series | TWM | TWM |
| Resistance | 150 Ohms | 150 Ohms |
| Tolerance | ±5% | ±5% |
| Power Rating | 3W | 3W |
| Composition | Metal Oxide Film | Metal Oxide Film |
| Features | Flame Proof, Safety | Flame Proof, Safety |
| Temperature Coefficient | ±350ppm/°C | ±350ppm/°C |
| Operating Temperature | -55°C to 275°C | -55°C to 275°C |
| Package Type | Radial | Radial |
| Dimensions | 0.492" L x 0.354" W (12.50mm x 9.00mm) | 0.492" L x 0.354" W (12.50mm x 9.00mm) |
| Height - Seated (Max) | 1.024" (26.00mm) | 1.024" (26.00mm) |
| Number of Terminations | 2 | 2 |
| Product Status | Obsolete | Active |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant |
| REACH Status | REACH Unaffected | REACH Unaffected |
Engineering Selection Recommendations
The TWM3J150E is the direct functional equivalent of the obsolete TWM3J150. Both components share identical electrical specifications, thermal characteristics, and physical dimensions. The primary distinction is product status and regulatory compliance: the TWM3J150E is currently in active production and meets ROHS3 compliance requirements, whereas the TWM3J150 is obsolete and non-compliant with RoHS standards.
For new designs or component replacement in systems requiring RoHS compliance, the TWM3J150E is the appropriate selection. Both components maintain identical performance across all specified operating parameters and are mechanically interchangeable in radial through-hole PCB applications.
Frequently Asked Questions (FAQ)
Q: Can the TWM3J150E be used as a direct replacement for the TWM3J150?
A: Yes. The TWM3J150E is electrically and mechanically equivalent to the TWM3J150. Both components have identical resistance values, tolerance, power ratings, temperature coefficients, operating temperature ranges, and physical dimensions. The components are directly interchangeable in circuit applications.
Q: What is the primary difference between the TWM3J150 and TWM3J150E?
A: The TWM3J150 is obsolete and RoHS non-compliant, while the TWM3J150E is in active production and ROHS3 compliant. All electrical and mechanical specifications are identical.
Q: Are there any dimensional differences between these parts?
A: No. Both the TWM3J150 and TWM3J150E have identical physical dimensions of 0.492" L x 0.354" W with a maximum seated height of 1.024". They are mechanically interchangeable in radial through-hole PCB layouts.
Q: Do both parts operate across the same temperature range?
A: Yes. Both components operate from -55°C to 275°C with a temperature coefficient of ±350ppm/°C.
Q: What packaging options are available for the TWM3J150E?
A: The TWM3J150E is supplied in bulk packaging.
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