CF12JT2M40 Equivalent & Substitute Parts

Part Overview

The CF12JT2M40 is a 2.4 MOhms ±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 applications requiring reliable resistance in the megohm range. The part is currently active in production with ROHS3 compliance and REACH unaffected status. Substitute parts are identified to address packaging format availability and inventory considerations while maintaining electrical and mechanical compatibility.

Substiute Parts

CF12JT2M40

Stackpole Electronics IncIn Stock: 833CF12JT2M40 Datasheet

Current PartRFQ

CFM12JT2M40

Stackpole Electronics IncIn Stock: 5403CFM12JT2M40 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CF12JT2M40 is determined by the following critical parameters:

• Resistance value: 2.4 MOhms (exact match required)
• Tolerance: ±5% (exact match required)
• Power rating: 0.5W / 1/2W (exact match required)
• Composition: Carbon Film (exact match required)
• Package type: Axial (exact match required)
• Temperature coefficient: 0 / -1500ppm/°C (exact match required)
• Operating temperature range: -55°C to 155°C (exact match required)
• Regulatory compliance: ROHS3 Compliant, REACH Unaffected (exact match required)

The identified substitute part CFM12JT2M40 maintains all electrical specifications and regulatory compliance while differing only in packaging format (Cut Tape versus Tape & Reel) and physical dimensions within the axial package category.

Parameter Comparison

Engineering Selection Recommendations

Both CF12JT2M40 and CFM12JT2M40 are active production parts from Stackpole Electronics Inc with identical electrical specifications and regulatory compliance. Selection between these parts is based on packaging and procurement requirements rather than electrical performance. The CF12JT2M40 in Tape & Reel format is suitable for high-volume automated assembly operations. The CFM12JT2M40 in Cut Tape format accommodates lower-volume applications or manual assembly processes. Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compatibility in equivalent applications.

Frequently Asked Questions (FAQ)

Q: Can CFM12JT2M40 be used as a direct replacement for CF12JT2M40 in circuit design?

A: Yes. Both parts have identical electrical specifications: 2.4 MOhms resistance, ±5% tolerance, 0.5W power rating, carbon film composition, and operating temperature range of -55°C to 155°C. Electrical performance and reliability are equivalent.

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

A: Tape & Reel (TR) packaging is used for high-volume automated pick-and-place assembly. Cut Tape (CT) packaging provides individual component strips suitable for lower-volume or manual assembly processes. Both formats contain the same component.

Q: Are there physical dimension differences between these parts?

A: Yes. The CF12JT2M40 measures 0.106" diameter x 0.335" length (2.70mm x 8.50mm), while the CFM12JT2M40 measures 0.091" diameter x 0.256" length (2.30mm x 6.50mm). Both are axial package types. Verify PCB layout compatibility before substitution if physical space is constrained.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both CF12JT2M40 and CFM12JT2M40 are ROHS3 compliant and REACH unaffected, meeting equivalent regulatory standards for equivalent applications.

Q: Which part should be selected for new designs?

A: Selection depends on manufacturing process requirements. For automated assembly with high-volume production, use CF12JT2M40 (Tape & Reel). For lower-volume or manual assembly, use CFM12JT2M40 (Cut Tape). Both are active production parts with equivalent electrical performance.