CF18JT3R00 Equivalent & Substitute Parts

Part Overview

The CF18JT3R00 is a 3 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 electronic applications requiring reliable fixed resistance values in compact axial packages. The part maintains Active product status with 848 units currently in stock. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility allow direct replacement in circuit designs.

Substiute Parts

CF18JT3R00

Stackpole Electronics IncIn Stock: 922CF18JT3R00 Datasheet

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CFM14JT3R00

Stackpole Electronics IncIn Stock: 11965CFM14JT3R00 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The CFM14JT3R00 qualifies as a substitute for the CF18JT3R00 based on the following matching parameters:

• Identical resistance value: 3 Ohms
• Identical tolerance: ±5%
• Identical composition: Carbon Film
• Identical package type: Axial
• Identical temperature coefficient: ±400ppm/°C
• Identical operating temperature range: -55°C to 155°C
• Identical RoHS compliance: ROHS3 Compliant
• Identical manufacturer: Stackpole Electronics Inc

The primary difference is the power rating: CFM14JT3R00 provides 0.25W (1/4W) versus the CF18JT3R00's 0.125W (1/8W). This represents an upgrade in power dissipation capability while maintaining all other electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

Both CF18JT3R00 and CFM14JT3R00 maintain Active product status and ROHS3 compliance. The CFM14JT3R00 provides increased power dissipation capacity (0.25W versus 0.125W) while preserving all critical electrical parameters including resistance value, tolerance, temperature coefficient, and operating temperature range. Selection between these parts depends on circuit power requirements. Applications requiring power dissipation within 0.125W specifications can use either part. Applications requiring power dissipation between 0.125W and 0.25W must use CFM14JT3R00. Both parts are manufactured by Stackpole Electronics Inc and carry identical compliance certifications.

Frequently Asked Questions (FAQ)

Q: Can CFM14JT3R00 replace CF18JT3R00 in all applications?

A: CFM14JT3R00 can replace CF18JT3R00 when circuit design allows for the higher power rating. The 1/4W rating provides additional thermal margin compared to the 1/8W specification. Verify that board layout and thermal management accommodate the substitute part's physical dimensions.

Q: What is the primary difference between these parts?

A: The power rating differs: CF18JT3R00 is rated at 0.125W (1/8W) while CFM14JT3R00 is rated at 0.25W (1/4W). All other electrical specifications including resistance, tolerance, temperature coefficient, and operating range are identical.

Q: Are the physical dimensions identical?

A: Both parts share identical axial package dimensions: 0.067" diameter by 0.130" length (1.70mm x 3.30mm). They are mechanically interchangeable on PCBs designed for axial through-hole resistors.

Q: Do both parts meet the same compliance standards?

A: Yes. Both CF18JT3R00 and CFM14JT3R00 are ROHS3 compliant, REACH unaffected, and carry identical ECCN and HTSUS classifications.

Q: Which part should be selected for new designs?

A: For new designs, evaluate actual circuit power dissipation requirements. If power dissipation remains below 0.125W, either part is acceptable. If power dissipation may approach or exceed 0.125W, CFM14JT3R00 provides design margin and is the preferred selection.