CF18JA820R Equivalent & Substitute Parts

Part Overview

The CF18JA820R is an 820 Ohm ±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 is currently in active production status with 1051 units available in inventory. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility allow direct replacement in circuit designs.

Substiute Parts

CF18JA820R

Stackpole Electronics IncIn Stock: 1150CF18JA820R Datasheet

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CFM14JA820R

Stackpole Electronics IncIn Stock: 2337CFM14JA820R Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CF18JA820R is determined by the following critical parameters:

• Resistance Value: Must be 820 Ohms
• Tolerance: Must be ±5%
• Composition: Must be Carbon Film
• Package Type: Must be Axial
• Operating Temperature Range: Must support -55°C to 155°C
• Regulatory Compliance: Must maintain ROHS3 compliance

The CFM14JA820R qualifies as a substitute based on matching all electrical specifications (resistance, tolerance, composition, temperature range) and mechanical compatibility (axial package). The primary difference is the power rating upgrade from 1/8W to 1/4W, which represents a higher power dissipation capability while maintaining identical physical dimensions and electrical characteristics.

Parameter Comparison

Engineering Selection Recommendations

Both CF18JA820R and CFM14JA820R maintain active production status and full ROHS3 compliance. The CFM14JA820R provides increased power dissipation capacity (0.25W versus 0.125W) while preserving all electrical and mechanical specifications. Selection between these parts depends on circuit power requirements: the CF18JA820R is suitable for applications with power dissipation up to 0.125W, while the CFM14JA820R accommodates applications requiring up to 0.25W dissipation. Both parts are certified for identical operating temperature ranges and maintain equivalent regulatory standing.

Frequently Asked Questions (FAQ)

Q: Can CFM14JA820R replace CF18JA820R in any application?

A: The CFM14JA820R is electrically and mechanically compatible with CF18JA820R. The higher power rating (1/4W versus 1/8W) does not create incompatibility; it provides additional thermal margin. Substitution is valid when circuit design permits the higher power rating.

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

A: The CF18JA820R is rated for 0.125W power dissipation, while the CFM14JA820R is rated for 0.25W. All other specifications—resistance value, tolerance, composition, temperature range, and physical dimensions—are identical.

Q: Are the physical dimensions identical?

A: Yes. Both parts measure 0.067" diameter by 0.130" length (1.70mm x 3.30mm), maintaining identical axial package geometry.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both CF18JA820R and CFM14JA820R are ROHS3 compliant and REACH unaffected, meeting equivalent environmental and safety standards.

Q: What determines whether a part qualifies as a substitute?

A: Substitution eligibility requires matching resistance value, tolerance, composition type, package configuration, operating temperature range, and regulatory compliance status. Power rating differences do not disqualify substitution when the substitute provides equal or greater capacity.