CF12JT240K Equivalent & Substitute Parts

Part Overview

The CF12JT240K is a 240 kOhms ±5% 0.5W 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 resistance values across industrial and commercial temperature ranges. The part maintains Active product status with full RoHS3 compliance and REACH unaffected certification. Substitute parts are identified to address inventory availability, lead time constraints, or specific application requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

CF12JT240K

Stackpole Electronics IncIn Stock: 6174CF12JT240K Datasheet

Current PartRFQ

CFM12JT240K

Stackpole Electronics IncIn Stock: 5655CFM12JT240K Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The CFM12JT240K qualifies as a direct substitute for the CF12JT240K based on the following critical parameters:

• Electrical Equivalence: Identical resistance value (240 kOhms) and tolerance (±5%)
• Power Rating Match: Both rated at 0.5W (1/2W)
• Material Composition: Both utilize carbon film construction
• Temperature Performance: Identical operating range (-55°C to 155°C) and temperature coefficient (0 / -850 ppm/°C)
• Regulatory Compliance: Both maintain ROHS3 compliance and REACH unaffected status
• Mechanical Compatibility: Both feature axial package configuration with 2 terminations

The primary distinction between these parts is the physical dimension and series designation. The CFM12JT240K represents a more compact variant (0.091" Dia x 0.256" L) compared to the CF12JT240K (0.106" Dia x 0.335" L), while maintaining identical electrical performance.

Parameter Comparison

Engineering Selection Recommendations

Both CF12JT240K and CFM12JT240K maintain Active product status with identical regulatory compliance profiles. Selection between these parts should be based on physical space constraints within the application. The CFM12JT240K offers a more compact footprint suitable for space-limited designs, while the CF12JT240K provides a larger form factor. Both parts satisfy ROHS3 and REACH requirements, ensuring compliance with current environmental and safety standards. Electrical performance remains equivalent across all specified parameters, including resistance accuracy, power dissipation capability, and temperature stability.

Frequently Asked Questions (FAQ)

Q: Can CFM12JT240K replace CF12JT240K in existing designs? A: Yes, provided the physical dimensions of the CFM12JT240K (0.091" Dia x 0.256" L) fit within the available PCB space. Electrical performance is identical.

Q: Are there any tolerance or accuracy differences between these parts? A: No. Both parts maintain ±5% tolerance and identical temperature coefficient specifications.

Q: What is the primary reason to substitute CF12JT240K with CFM12JT240K? A: The CFM12JT240K offers a more compact axial package, making it suitable for applications with space constraints while maintaining full electrical equivalence.

Q: Do both parts meet the same regulatory requirements? A: Yes. Both CF12JT240K and CFM12JT240K are ROHS3 compliant and REACH unaffected.

Q: Is the operating temperature range the same for both parts? A: Yes. Both parts operate across -55°C to 155°C with identical temperature coefficient performance.

Q: Can these parts be used interchangeably in high-reliability applications? A: Yes, provided the physical dimensions are compatible with the PCB layout. Both parts carry identical Active status and compliance certifications.