CF18JA18R0 Equivalent & Substitute Parts

Part Overview

The CF18JA18R0 is an 18 Ohm, ±5% tolerance, 1/8W (0.125W) through-hole axial 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 is currently Active in production status with 948 units in stock. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility allow direct replacement in circuit designs.

Substiute Parts

CF18JA18R0

Stackpole Electronics IncIn Stock: 1013CF18JA18R0 Datasheet

Current PartRFQ

CFM14JA18R0

Stackpole Electronics IncIn Stock: 4424CFM14JA18R0 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CF18JA18R0 is determined by the following criteria:

• Resistance Value: Must be 18 Ohms
• Tolerance: Must be ±5% or tighter
• Composition: Must be Carbon Film
• Package: Must be Axial through-hole configuration
• Temperature Coefficient: Must be 0 / -400ppm/°C or equivalent
• Operating Temperature Range: Must support -55°C to 155°C minimum
• Compliance: Must maintain ROHS3 compliance and REACH Unaffected status

The CFM14JA18R0 qualifies as a substitute part. While it features a higher power rating (0.25W vs. 0.125W), all critical electrical and mechanical parameters remain compatible. The increased power rating provides additional thermal margin without affecting circuit functionality in applications designed for the CF18JA18R0.

Parameter Comparison

Engineering Selection Recommendations

Both the CF18JA18R0 and CFM14JA18R0 maintain Active product status and full ROHS3 compliance with REACH Unaffected certification. Selection between these parts should be based on application requirements and supply chain considerations:

The CF18JA18R0 is appropriate for applications where the 1/8W power rating is sufficient and the original design specification calls for this exact part number.

The CFM14JA18R0 serves as a direct electrical substitute with enhanced thermal capability due to its 1/4W power rating. This higher power rating does not degrade performance in circuits designed for lower power dissipation. The CFM14JA18R0 offers greater inventory availability (4390 units vs. 948 units) and may provide supply chain advantages.

Frequently Asked Questions (FAQ)

Q: Can CFM14JA18R0 replace CF18JA18R0 in my circuit?

A: Yes. The CFM14JA18R0 is electrically and mechanically compatible. Both parts share identical resistance (18 Ohms), tolerance (±5%), composition (Carbon Film), temperature coefficient, operating temperature range, and compliance certifications. The higher power rating of the CFM14JA18R0 does not create compatibility issues in applications designed for the CF18JA18R0.

Q: What is the difference between these two parts?

A: The primary difference is power rating: CF18JA18R0 is rated at 0.125W (1/8W), while CFM14JA18R0 is rated at 0.25W (1/4W). Secondary differences include series designation (CF vs. CFM) and packaging format (Tape & Box vs. Cut Tape). All electrical specifications and environmental ratings are identical.

Q: Are both parts RoHS compliant?

A: Yes. Both CF18JA18R0 and CFM14JA18R0 are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements.

Q: Does the higher power rating of CFM14JA18R0 affect circuit performance?

A: No. A higher power rating indicates greater thermal capacity and does not alter electrical behavior. The CFM14JA18R0 will perform identically to the CF18JA18R0 in all electrical respects while providing additional thermal margin.

Q: What is the temperature operating range for both parts?

A: Both parts operate across -55°C to 155°C, supporting industrial and extended temperature applications.