CF18JA4K70 Equivalent & Substitute Parts

Part Overview

The CF18JA4K70 is a 4.7 kOhms ±5% 1/8W 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 1107 units in current inventory. Substitute parts are identified to address application requirements for higher power dissipation or alternative packaging configurations while maintaining electrical and mechanical compatibility.

Substiute Parts

CF18JA4K70

Stackpole Electronics IncIn Stock: 1130CF18JA4K70 Datasheet

Current PartRFQ

CFM14JA4K70

Stackpole Electronics IncIn Stock: 1050CFM14JA4K70 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CF18JA4K70 is determined by the following critical parameters:

• Resistance Value: Must remain 4.7 kOhms
• Tolerance: Must remain ±5%
• Composition: Must remain Carbon Film
• Package Type: Must remain Axial
• Operating Temperature Range: Must remain -55°C to 155°C
• Regulatory Compliance: Must maintain ROHS3 and REACH compliance

The identified substitute CFM14JA4K70 maintains all electrical parameters and mechanical compatibility while providing increased power dissipation capability (0.25W vs. 0.125W). This upgrade path accommodates applications requiring higher thermal performance without altering circuit functionality or footprint characteristics.

Parameter Comparison

Engineering Selection Recommendations

Both CF18JA4K70 and CFM14JA4K70 maintain identical electrical characteristics and mechanical dimensions, ensuring direct substitution compatibility. Selection between these parts depends on application power dissipation requirements:

• CF18JA4K70: Suitable for applications with power dissipation up to 0.125W
• CFM14JA4K70: Suitable for applications with power dissipation up to 0.25W, providing thermal margin for higher-stress environments

Both parts maintain Active product status and full compliance with ROHS3 and REACH regulations. Packaging format differs (Tape & Box versus Cut Tape), which may influence procurement and assembly workflows but does not affect electrical or mechanical performance.

Frequently Asked Questions (FAQ)

Q: Can CFM14JA4K70 directly replace CF18JA4K70 in existing designs?

A: Yes. Both parts share identical resistance value (4.7 kOhms), tolerance (±5%), composition (Carbon Film), package type (Axial), and physical dimensions (0.067" Dia x 0.130" L). The CFM14JA4K70 provides higher power rating (0.25W vs. 0.125W) without altering circuit behavior or board layout.

Q: What is the primary difference between these parts?

A: The primary difference is power dissipation capability. CF18JA4K70 is rated for 0.125W, while CFM14JA4K70 is rated for 0.25W. All other electrical and mechanical parameters remain identical.

Q: Are both parts compliant with environmental regulations?

A: Yes. Both CF18JA4K70 and CFM14JA4K70 are ROHS3 Compliant and REACH Unaffected, meeting current environmental and safety standards.

Q: Does packaging format affect compatibility?

A: Packaging format (Tape & Box for CF18JA4K70 versus Cut Tape for CFM14JA4K70) affects procurement and assembly logistics but does not impact electrical performance or mechanical fit. Component functionality remains identical regardless of packaging format.

Q: What temperature range do these resistors support?

A: Both parts operate across -55°C to 155°C with identical temperature coefficient specifications (0 / -400 ppm/°C), ensuring consistent performance across industrial and extended temperature applications.