CF12JT8R20 Equivalent & Substitute Parts

Part Overview

The CF12JT8R20 is an 8.2 Ohm, ±5% tolerance, 0.5W (1/2W) 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 resistance in compact form factors. The part is currently active in production with 1389 units in stock. Substitute parts are identified to provide alternative sourcing options when the primary part number becomes unavailable or when design flexibility is required.

Substiute Parts

CF12JT8R20

Stackpole Electronics IncIn Stock: 1465CF12JT8R20 Datasheet

Current PartRFQ

CFM12JT8R20

Stackpole Electronics IncIn Stock: 6138CFM12JT8R20 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CF12JT8R20 is determined by strict equivalence across the following critical parameters:

• Resistance value: 8.2 Ohms (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: ±400ppm/°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 CFM12JT8R20 meets all substitution criteria and is classified as a manufacturer-recommended equivalent. Physical dimensions vary slightly between the main part and substitute, but both conform to standard axial package specifications and are functionally interchangeable in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Both the CF12JT8R20 and CFM12JT8R20 are active production parts from Stackpole Electronics Inc with identical electrical specifications and regulatory compliance status. Selection between these parts should be based on the following factors:

The CFM12JT8R20 offers higher inventory availability (6072 units versus 1389 units) and a more compact physical footprint, making it suitable for space-constrained applications. The CF12JT8R20 maintains a larger diameter and length profile, which may be preferred in applications where component accessibility or thermal dissipation considerations favor the original dimensions.

Both parts satisfy ROHS3 compliance and REACH requirements. The identical electrical parameters—8.2 Ohm resistance, ±5% tolerance, 0.5W power rating, ±400ppm/°C temperature coefficient, and -55°C to 155°C operating range—ensure functional equivalence in circuit design.

Frequently Asked Questions (FAQ)

Q: Can the CFM12JT8R20 be used as a direct replacement for the CF12JT8R20?

A: Yes. Both parts share identical electrical specifications: 8.2 Ohm resistance, ±5% tolerance, 0.5W power rating, ±400ppm/°C temperature coefficient, and -55°C to 155°C operating temperature range. Both are carbon film axial resistors with flame retardant coating and identical regulatory compliance status.

Q: What are the physical differences between these parts?

A: The CF12JT8R20 measures 0.106" diameter × 0.335" length (2.70mm × 8.50mm). The CFM12JT8R20 measures 0.091" diameter × 0.256" length (2.30mm × 6.50mm). The substitute part is more compact in both dimensions while maintaining equivalent electrical performance.

Q: Are there any circuit design considerations when switching between these parts?

A: No circuit design changes are required. The electrical parameters are identical. Physical dimensions may affect board layout and component spacing, but electrical behavior remains unchanged.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the CF12JT8R20 and CFM12JT8R20 are ROHS3 compliant and REACH unaffected, with identical ECCN (EAR99) and HTSUS (8533.10.0065) classifications.

Q: Which part should be selected for new designs?

A: Selection depends on application requirements. The CFM12JT8R20 offers superior inventory availability and a smaller footprint suitable for compact designs. The CF12JT8R20 maintains larger dimensions if thermal or accessibility considerations favor the original profile. Both are equally valid for new designs.