CF18JT2R70 Equivalent & Substitute Parts

Part Overview

The CF18JT2R70 is a 2.7 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 maintains Active product status with 966 units currently in stock. Substitute parts are identified when higher power ratings or alternative packaging configurations are required while maintaining electrical compatibility and compliance standards.

Substiute Parts

CF18JT2R70

Stackpole Electronics IncIn Stock: 1039CF18JT2R70 Datasheet

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CFM14JT2R70

Stackpole Electronics IncIn Stock: 9352CFM14JT2R70 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the CF18JT2R70 is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Resistance value must remain 2.7 Ohms
• Tolerance must be ±5% or tighter
• Temperature coefficient ±400ppm/°C
• Operating temperature range -55°C to 155°C

Mechanical Compatibility Requirements:

• Package type must be Axial through-hole
• Physical dimensions 0.067" Dia × 0.130" L (1.70mm × 3.30mm)
• Number of terminations: 2

Regulatory & Compliance Requirements:

• RoHS3 Compliant
• REACH Unaffected status
• Carbon Film composition with Flame Retardant Coating

Allowable Variation:

• Power rating may be increased (uprated) from 0.125W to higher values
• Packaging format may vary (Tape & Reel to Cut Tape)
• Series designation may differ within Stackpole Electronics Inc product lines

The CFM14JT2R70 qualifies as a substitute because it maintains all electrical parameters, mechanical compatibility, and regulatory compliance while providing an increased power rating of 0.25W (1/4W).

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (CF18JT2R70): Select the CF18JT2R70 for applications where the 0.125W power rating is sufficient and Tape & Reel packaging is required for automated assembly processes. This part maintains Active product status with established supply availability.

Substitute Part Selection (CFM14JT2R70): Select the CFM14JT2R70 when circuit design requires increased thermal margin or higher power dissipation capacity. The 0.25W rating provides 2× the power handling capability while maintaining identical electrical characteristics and compliance certifications. Cut Tape packaging is suitable for manual assembly or lower-volume production runs.

Compliance Basis: Both parts maintain ROHS3 Compliant and REACH Unaffected status, ensuring regulatory compliance for industrial and commercial applications. Both are manufactured by Stackpole Electronics Inc with Active product status, supporting long-term supply chain reliability.

Frequently Asked Questions (FAQ)

Q: Can CFM14JT2R70 be used as a direct replacement for CF18JT2R70?

A: Yes. The CFM14JT2R70 is electrically and mechanically compatible. Both parts share identical resistance (2.7 Ohms), tolerance (±5%), temperature coefficient (±400ppm/°C), operating temperature range (-55°C to 155°C), and physical dimensions (0.067" Dia × 0.130" L). The CFM14JT2R70 provides an uprated power capability of 0.25W versus 0.125W, making it suitable for applications requiring higher power dissipation.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging is used for high-volume automated assembly, where components are supplied on continuous tape wound on reels. Cut Tape (CT) packaging provides individual component strips cut from the reel, suitable for manual assembly, prototyping, or lower-volume production. Both packaging formats contain identical components.

Q: Are there any dimensional differences between these parts?

A: No. Both CF18JT2R70 and CFM14JT2R70 maintain identical physical dimensions of 0.067" Dia × 0.130" L (1.70mm × 3.30mm), ensuring compatibility with existing PCB layouts and through-hole mounting patterns.

Q: What determines substitution eligibility for this resistor?

A: Substitution is determined by maintaining: identical resistance value (2.7 Ohms), tolerance (±5%), temperature coefficient (±400ppm/°C), operating temperature range (-55°C to 155°C), axial package type, physical dimensions, and regulatory compliance (ROHS3, REACH). Power rating may be increased; packaging format and series designation may vary.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both CF18JT2R70 and CFM14JT2R70 are ROHS3 Compliant and REACH Unaffected, meeting regulatory requirements for industrial and commercial applications.

Q: Which part should be selected for new designs?

A: For new designs, select based on circuit power requirements. If 0.125W is sufficient, either part is acceptable. If higher thermal margin or power dissipation is needed, the CFM14JT2R70 (0.25W) is the appropriate choice. Both maintain Active product status and equivalent supply reliability.