CF18JT240R Equivalent & Substitute Parts

Part Overview

The CF18JT240R is a 240 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 active in production with 4391 units in stock. Substitute parts are identified when higher power ratings or alternative series options are required while maintaining electrical compatibility and mechanical fit.

Substiute Parts

CF18JT240R

Stackpole Electronics IncIn Stock: 4401CF18JT240R Datasheet

Current PartRFQ

CFM14JT240R

Stackpole Electronics IncIn Stock: 16023CFM14JT240R Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

The CFM14JT240R qualifies as a direct substitute based on the following criteria:

Electrical Compatibility:

• Identical resistance value: 240 Ohms
• Identical tolerance: ±5%
• Identical temperature coefficient: 0 / -400ppm/°C
• Identical operating temperature range: -55°C to 155°C

Mechanical Compatibility:

• Identical package type: Axial
• Identical physical dimensions: 0.067" Dia x 0.130" L (1.70mm x 3.30mm)
• Identical number of terminations: 2

Compliance & Material:

• Identical composition: Carbon Film
• Identical features: Flame Retardant Coating, Safety
• Identical RoHS status: ROHS3 Compliant
• Identical REACH status: REACH Unaffected

Upgrade Characteristic: The CFM14JT240R provides a higher power rating of 0.25W (1/4W) compared to the 0.125W (1/8W) of the CF18JT240R, allowing use in applications requiring greater power dissipation while maintaining all other electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the CF18JT240R and CFM14JT240R are active production parts from Stackpole Electronics Inc with full ROHS3 compliance and REACH unaffected status. The CFM14JT240R serves as a direct electrical and mechanical substitute with the advantage of increased power dissipation capability. Selection between these parts depends on circuit power requirements: the CF18JT240R for applications within 0.125W dissipation limits, and the CFM14JT240R for applications requiring up to 0.25W dissipation. Both parts maintain identical resistance, tolerance, temperature characteristics, and physical form factor, ensuring drop-in compatibility in axial through-hole designs.

Frequently Asked Questions (FAQ)

Q: Can CFM14JT240R replace CF18JT240R in any application?

A: The CFM14JT240R is electrically and mechanically compatible with CF18JT240R. The higher power rating of CFM14JT240R (0.25W vs 0.125W) makes it suitable for applications where the original part operates within its power limits. No circuit redesign is required for mechanical or electrical compatibility.

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

A: The sole difference is the power rating. CF18JT240R is rated at 0.125W (1/8W), while CFM14JT240R is rated at 0.25W (1/4W). All other specifications including resistance, tolerance, temperature range, and physical dimensions are identical.

Q: Are both parts suitable for the same temperature range?

A: Yes. Both CF18JT240R and CFM14JT240R operate across the identical temperature range of -55°C to 155°C with the same temperature coefficient of 0 / -400ppm/°C.

Q: Do these parts have the same physical footprint?

A: Yes. Both parts share identical axial package dimensions of 0.067" Dia x 0.130" L (1.70mm x 3.30mm), allowing direct board-level substitution without layout modifications.

Q: Are both parts RoHS compliant?

A: Yes. Both CF18JT240R and CFM14JT240R are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.