CF18JT7R50 Equivalent & Substitute Parts

Part Overview

The CF18JT7R50 is a 7.5 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 electronic applications requiring precise resistance values in compact form factors. The part maintains Active product status with full RoHS3 compliance and REACH unaffected designation. Substitute parts are identified when higher power ratings or alternative packaging configurations are required while maintaining core electrical specifications.

Substiute Parts

CF18JT7R50

Stackpole Electronics IncIn Stock: 766CF18JT7R50 Datasheet

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CFM14JT7R50

Stackpole Electronics IncIn Stock: 3909CFM14JT7R50 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CF18JT7R50 is determined by the following critical parameters:

• Resistance Value: Must be 7.5 Ohms
• Tolerance: Must be ±5%
• Composition: Must be Carbon Film
• Temperature Coefficient: Must be ±400ppm/°C
• Operating Temperature Range: Must be -55°C to 155°C
• Package Type: Must be Axial
• Compliance: Must maintain RoHS3 and REACH unaffected status

The CFM14JT7R50 qualifies as a substitute part because it maintains identical electrical specifications (resistance, tolerance, composition, temperature coefficient, and operating range) and package configuration. The primary distinction is the power rating upgrade from 0.125W to 0.25W, which represents a higher capability rating suitable for applications requiring increased thermal dissipation capacity while preserving all core electrical characteristics.

Parameter Comparison

Engineering Selection Recommendations

Both CF18JT7R50 and CFM14JT7R50 maintain Active product status with full RoHS3 compliance and REACH unaffected certification. Selection between these parts depends on circuit power dissipation requirements. The CF18JT7R50 is appropriate for applications with power dissipation at or below 0.125W. The CFM14JT7R50 provides increased thermal headroom with its 0.25W rating, suitable for circuits where power dissipation approaches or exceeds the 1/8W threshold. Both parts share identical electrical characteristics and temperature performance, ensuring functional equivalence within their respective power ratings.

Frequently Asked Questions (FAQ)

Q: Can CFM14JT7R50 directly replace CF18JT7R50 in any application?

A: The CFM14JT7R50 can replace CF18JT7R50 when the circuit power dissipation does not exceed 0.125W. The higher power rating of the substitute part does not create compatibility issues in lower-power applications. However, physical space constraints may apply due to potential size differences in the axial package.

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

A: The primary difference is the power rating: CF18JT7R50 is rated at 0.125W (1/8W), while CFM14JT7R50 is rated at 0.25W (1/4W). All other electrical specifications, including resistance value, tolerance, temperature coefficient, and operating temperature range, are identical.

Q: Are there packaging differences between CF18JT7R50 and CFM14JT7R50?

A: Yes. CF18JT7R50 is supplied in Tape & Reel (TR) format, while CFM14JT7R50 is supplied in Cut Tape (CT) format. This distinction affects procurement and assembly processes but does not impact electrical performance.

Q: Do both parts meet the same compliance standards?

A: Yes. Both CF18JT7R50 and CFM14JT7R50 are ROHS3 compliant and REACH unaffected, ensuring equivalent regulatory compliance for applications requiring these certifications.

Q: What determines whether a part can substitute for CF18JT7R50?

A: Substitute parts must maintain the same resistance value (7.5 Ohms), tolerance (±5%), composition (Carbon Film), temperature coefficient (±400ppm/°C), operating temperature range (-55°C to 155°C), and axial package configuration. Power rating may be equal or higher without affecting substitution eligibility.