CF14JA2M00 Equivalent & Substitute Parts

Part Overview

The CF14JA2M00 is a 2 MOhm ±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 resistance in compact form factors. The part is currently active in production with 624 units in stock. Substitute parts are identified when equivalent electrical performance is required but alternative packaging, power ratings, or availability conditions necessitate component replacement.

Substiute Parts

CF14JA2M00

Stackpole Electronics IncIn Stock: 659CF14JA2M00 Datasheet

Current PartRFQ

CFM12JT2M00

Stackpole Electronics IncIn Stock: 16244CFM12JT2M00 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

The CFM12JT2M00 qualifies as a substitute for the CF14JA2M00 based on the following critical parameters:

Matching Electrical Specifications:

• Resistance value: 2 MOhms (identical)
• Tolerance: ±5% (identical)
• Composition: Carbon Film (identical)
• Temperature Coefficient: 0 / -1500 ppm/°C (identical)
• Operating Temperature Range: -55°C to 155°C (identical)

Allowable Variation:

• Power Rating: CFM12JT2M00 provides 0.5W (1/2W) versus CF14JA2M00's 0.25W (1/4W). The higher power rating is acceptable as a substitute when the circuit application permits, as it maintains electrical performance while providing additional thermal margin.

Compliance Alignment:

• Both parts are ROHS3 Compliant
• Both are REACH Unaffected
• Both share identical ECCN and HTSUS classifications

Package Compatibility:

• Both use Axial through-hole configuration
• Physical dimensions differ slightly (0.236" L vs 0.256" L), but both maintain the same 0.091" diameter and 2-termination configuration suitable for standard PCB layouts.

Parameter Comparison

Engineering Selection Recommendations

Both the CF14JA2M00 and CFM12JT2M00 are active production components from Stackpole Electronics Inc with identical regulatory compliance status (ROHS3 Compliant, REACH Unaffected). Selection between these parts should be based on application-specific requirements:

Select CF14JA2M00 when:

• Circuit design specifies 1/4W power dissipation limits
• PCB space constraints require the shorter 0.236" length
• Original design validation was performed with this specific part number

Select CFM12JT2M00 when:

• Higher thermal margin is beneficial (0.5W rating provides additional safety factor)
• Availability or lead time favors the CFM series
• PCB layout accommodates the slightly longer 0.256" length
• Cost or inventory considerations favor the substitute

Both parts maintain identical electrical performance for the 2 MOhm resistance value and ±5% tolerance specification across the full -55°C to 155°C operating range.

Frequently Asked Questions (FAQ)

Q: Can CFM12JT2M00 directly replace CF14JA2M00 in my circuit?

A: Yes, provided your circuit design can accommodate the higher 0.5W power rating and the additional 0.020" length. The electrical specifications (2 MOhms, ±5% tolerance, temperature coefficient, operating range) are identical. Both parts use axial through-hole configuration with the same 0.091" diameter.

Q: What is the primary difference between these two parts?

A: The main difference is the power rating: CF14JA2M00 is rated at 0.25W (1/4W), while CFM12JT2M00 is rated at 0.5W (1/2W). The higher power rating in the substitute provides greater thermal capacity. Physical length differs by 0.020" (6.00mm vs 6.50mm).

Q: Are both parts RoHS compliant?

A: Yes, both CF14JA2M00 and CFM12JT2M00 are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements.

Q: Does the packaging format affect electrical performance?

A: No. CF14JA2M00 is supplied in Tape & Box (TB) format, while CFM12JT2M00 is supplied in Cut Tape (CT) format. Packaging format does not affect the electrical characteristics or performance of the resistor itself.

Q: Can I use CF14JA2M00 in place of CFM12JT2M00?

A: Substitution in the reverse direction is not recommended. The CF14JA2M00's lower 0.25W power rating may be insufficient if the circuit application requires the thermal capacity of a 0.5W resistor.

Q: Are the temperature coefficients identical?

A: Yes, both parts share the same temperature coefficient specification of 0 / -1500 ppm/°C and operate across the identical temperature range of -55°C to 155°C.