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CFM12JA75R0 Equivalent & Substitute Parts
Part Overview
The CFM12JA75R0 is a 75 Ohm, ±5% tolerance, 0.5W (1/2W) through-hole axial resistor manufactured by Stackpole Electronics Inc. This carbon film resistor features flame retardant coating and safety characteristics, designed for general-purpose electronic applications requiring reliable performance across industrial temperature ranges. The part is currently in active production status with 679 units available in inventory. Substitute parts may be required due to supply chain constraints, regional availability, or design optimization needs while maintaining equivalent electrical and mechanical performance.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resistance | 75 Ohms |
| Tolerance | ±5% |
| Power Rating | 0.5W (1/2W) |
| Composition | Carbon Film |
| Package Type | Axial |
| Temperature Coefficient | 0 / -400ppm/°C |
| Operating Temperature Range | -55°C to 155°C |
| Features | Flame Retardant Coating, Safety |
| RoHS Status | ROHS3 Compliant |
| REACH Status | REACH Unaffected |
Substitute Part Grouping Explanation
Substitution eligibility for the CFM12JA75R0 is determined by strict equivalence across the following critical parameters:
- Electrical Specifications: Resistance value (75 Ohms), tolerance (±5%), and power rating (0.5W/1/2W) must be identical
- Composition & Construction: Carbon film composition with flame retardant coating and safety features must be maintained
- Package Configuration: Axial through-hole package with 2 terminations required
- Environmental Performance: Temperature coefficient (0 / -400ppm/°C) and operating temperature range (-55°C to 155°C) must be equivalent
- Compliance Standards: RoHS3 compliance and REACH unaffected status must be preserved
The CF12JA75R0 qualifies as a manufacturer-recommended substitute based on identical electrical and environmental specifications, with only dimensional variations in the axial package geometry.
Parameter Comparison
| Parameter | CFM12JA75R0 (Main Part) | CF12JA75R0 (Substitute) | Compatibility |
|---|---|---|---|
| Manufacturer | Stackpole Electronics Inc | Stackpole Electronics Inc | Same |
| Resistance | 75 Ohms | 75 Ohms | Equivalent |
| Tolerance | ±5% | ±5% | Equivalent |
| Power Rating | 0.5W (1/2W) | 0.5W (1/2W) | Equivalent |
| Composition | Carbon Film | Carbon Film | Equivalent |
| Features | Flame Retardant Coating, Safety | Flame Retardant Coating, Safety | Equivalent |
| Temperature Coefficient | 0 / -400ppm/°C | 0 / -400ppm/°C | Equivalent |
| Operating Temperature | -55°C to 155°C | -55°C to 155°C | Equivalent |
| Package / Case | Axial | Axial | Equivalent |
| Terminations | 2 | 2 | Equivalent |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Equivalent |
| REACH Status | REACH Unaffected | REACH Unaffected | Equivalent |
| Size / Dimension | 0.091" Dia x 0.256" L (2.30mm x 6.50mm) | 0.106" Dia x 0.335" L (2.70mm x 8.50mm) | Different |
| Product Status | Active | Active | Equivalent |
Engineering Selection Recommendations
Both CFM12JA75R0 and CF12JA75R0 are active production parts from Stackpole Electronics Inc with full RoHS3 compliance and REACH unaffected status. Selection between these parts should be based on:
Dimensional Fit: The CF12JA75R0 substitute exhibits larger axial dimensions (0.106" diameter x 0.335" length versus 0.091" diameter x 0.256" length). PCB layout and component spacing must accommodate the larger package geometry. In applications with tight spatial constraints, the original CFM12JA75R0 may be preferred.
Electrical Equivalence: Both parts deliver identical electrical performance across all specified parameters, including resistance, tolerance, power rating, temperature coefficient, and operating temperature range. Functional substitution is complete.
Supply Availability: The CF12JA75R0 currently maintains higher inventory (920 units) compared to CFM12JA75R0 (679 units), making it suitable for high-volume procurement scenarios.
Frequently Asked Questions (FAQ)
Q: Can CF12JA75R0 be used as a direct replacement for CFM12JA75R0?
A: Yes, provided PCB layout accommodates the larger axial dimensions. All electrical specifications, environmental performance, and compliance certifications are identical. The parts are functionally equivalent.
Q: What is the primary difference between these two part numbers?
A: The CF12JA75R0 has larger axial package dimensions (0.106" Dia x 0.335" L) compared to CFM12JA75R0 (0.091" Dia x 0.256" L). Electrical and environmental specifications are identical.
Q: Are both parts RoHS3 compliant?
A: Yes, both CFM12JA75R0 and CF12JA75R0 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.
Q: What determines substitution eligibility for these carbon film resistors?
A: Substitution requires matching resistance value (75 Ohms), tolerance (±5%), power rating (0.5W), composition (carbon film), temperature coefficient (0 / -400ppm/°C), operating temperature range (-55°C to 155°C), and compliance status. Package dimensions may vary if PCB layout permits.
Q: Can these parts be used in high-temperature applications?
A: Both parts are rated for operating temperatures up to 155°C, suitable for industrial and automotive applications within this thermal envelope.
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