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CF14JA20R0 Equivalent & Substitute Parts
Part Overview
The CF14JA20R0 is a 20 Ohm ±5% 1/4W axial through-hole resistor manufactured by Stackpole Electronics Inc. This carbon film resistor features flame retardant coating and safety characteristics, designed for general-purpose applications requiring reliable performance across industrial temperature ranges. The part maintains Active product status with ROHS3 compliance and is suitable for direct integration into PCB assemblies. Substitute parts are identified to address packaging format preferences, power rating requirements, or inventory availability while maintaining electrical equivalence.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resistance | 20 Ohms |
| Tolerance | ±5% |
| Power Rating | 0.25W (1/4W) |
| Composition | Carbon Film |
| Package Type | Axial |
| Temperature Coefficient | 0 / -400ppm/°C |
| Operating Temperature Range | -55°C ~ 155°C |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitution eligibility for the CF14JA20R0 is determined by strict equivalence in the following parameters: resistance value (20 Ohms), tolerance (±5%), composition (carbon film), and axial package configuration. These parameters define the electrical and mechanical interchangeability of substitute parts.
Two substitute parts are identified:
CFM12JT20R0 — Upgrade substitute with increased power rating (0.5W vs. 0.25W). Maintains identical resistance, tolerance, composition, and axial package. Suitable where higher power dissipation capacity is required or preferred.
CFM14JT20R0 — Direct equivalent with identical electrical specifications and power rating (0.25W). Differs in physical dimensions and packaging format (Cut Tape vs. Tape & Box). Suitable for applications where compact form factor or alternative packaging is advantageous.
Parameter Comparison
| Parameter | CF14JA20R0 (Main) | CFM12JT20R0 (Upgrade) | CFM14JT20R0 (Direct Equivalent) |
|---|---|---|---|
| Manufacturer | Stackpole Electronics Inc | Stackpole Electronics Inc | Stackpole Electronics Inc |
| Resistance | 20 Ohms | 20 Ohms | 20 Ohms |
| Tolerance | ±5% | ±5% | ±5% |
| Power Rating | 0.25W (1/4W) | 0.5W (1/2W) | 0.25W (1/4W) |
| Composition | Carbon Film | Carbon Film | Carbon Film |
| Package Type | Axial | Axial | Axial |
| Temperature Coefficient | 0 / -400ppm/°C | 0 / -400ppm/°C | 0 / -400ppm/°C |
| Operating Temperature | -55°C ~ 155°C | -55°C ~ 155°C | -55°C ~ 155°C |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Series | CF | CFM | CFM |
| Product Status | Active | Active | Active |
Engineering Selection Recommendations
All three parts maintain Active product status and ROHS3 compliance, ensuring regulatory alignment for current applications. Selection between CF14JA20R0 and its substitutes depends on specific circuit requirements:
CFM12JT20R0 provides enhanced thermal margin through doubled power rating (0.5W), beneficial in applications where resistive heating or thermal stress is a design consideration. The upgrade maintains all electrical parameters while offering improved reliability headroom.
CFM14JT20R0 delivers direct electrical and thermal equivalence with identical 0.25W power rating, differing only in physical dimensions and packaging format. This substitute is appropriate where packaging standardization or space constraints favor the CFM series form factor.
Both substitutes are manufactured by the same supplier, ensuring consistent quality and performance characteristics across the product family.
Frequently Asked Questions (FAQ)
Q: Can CFM12JT20R0 be used as a direct replacement for CF14JA20R0?
A: Yes. CFM12JT20R0 maintains identical resistance (20 Ohms), tolerance (±5%), composition (carbon film), and axial package configuration. The increased power rating (0.5W vs. 0.25W) provides additional thermal capacity without affecting electrical performance in circuits designed for 0.25W operation.
Q: What is the primary difference between CF14JA20R0 and CFM14JT20R0?
A: Both parts are electrically identical with 20 Ohms ±5% at 0.25W power rating. The differences are physical dimensions (CF14JA20R0: 0.091" Dia x 0.236" L; CFM14JT20R0: 0.067" Dia x 0.130" L) and packaging format (Tape & Box vs. Cut Tape).
Q: Are all three parts suitable for the same operating temperature range?
A: Yes. CF14JA20R0, CFM12JT20R0, and CFM14JT20R0 all operate across -55°C to 155°C with identical temperature coefficient specifications (0 / -400ppm/°C).
Q: What packaging formats are available?
A: CF14JA20R0 is supplied in Tape & Box (TB) format. CFM12JT20R0 and CFM14JT20R0 are supplied in Cut Tape (CT) format. Both formats are suitable for automated assembly processes.
Q: Do all substitutes meet the same compliance standards?
A: Yes. CF14JA20R0, CFM12JT20R0, and CFM14JT20R0 are all ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with identical HTSUS coding (8533.10.0065).
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