CFR50J3R3 Equivalent & Substitute Parts

Part Overview

The CFR50J3R3 is a 3.3 Ohm, ±5% tolerance, 0.5W (1/2W) through-hole resistor with axial leads manufactured by TE Connectivity Passive Product. This carbon film resistor operates across a temperature range of -55°C to 155°C and is part of the CFR50 and Neohm series. The component is currently in active production status with 960 pieces available in new original inventory. Substitute parts are identified to provide alternative sourcing options when the primary manufacturer part becomes unavailable or when supply chain optimization is required.

Key Parameters

Parameter	Value
Resistance	3.3 Ohms
Tolerance	±5%
Power Rating	0.5W (1/2W)
Composition	Carbon Film
Package Type	Axial
Operating Temperature Range	-55°C to 155°C
Number of Terminations	2
ECCN Classification	EAR99
HTSUS Code	8533.10.0065

Substitute Part Grouping Explanation

Substitution of the CFR50J3R3 is determined by strict equivalence across the following critical parameters:

Resistance Value: 3.3 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 Configuration: Axial through-hole (exact match required)
Operating Temperature Range: -55°C to 155°C (minimum requirement)
Termination Count: 2 leads (exact match required)

The substitute part CFR-50JB-52-3R3 manufactured by YAGEO meets all critical electrical and mechanical parameters. Both components share identical resistance, tolerance, power rating, composition, and package type. Both operate within the specified temperature range and maintain the same two-terminal configuration required for direct circuit board substitution.

Parameter Comparison

Parameter	CFR50J3R3 (TE Connectivity)	CFR-50JB-52-3R3 (YAGEO)	Match Status
Resistance	3.3 Ohms	3.3 Ohms	Equivalent
Tolerance	±5%	±5%	Equivalent
Power Rating	0.5W (1/2W)	0.5W (1/2W)	Equivalent
Composition	Carbon Film	Carbon Film	Equivalent
Package Type	Axial	Axial	Equivalent
Operating Temperature Range	-55°C to 155°C	-55°C to 155°C	Equivalent
Temperature Coefficient	±350ppm/°C	-500/+350ppm/°C	Compatible
Number of Terminations	2	2	Equivalent
Physical Dimensions (Diameter)	0.118" (3.00mm)	0.130" (3.30mm)	Compatible
Physical Dimensions (Length)	0.354" (9.00mm)	0.354" (9.00mm)	Equivalent
Product Status	Active	Active	Equivalent
RoHS Status	Not Applicable	ROHS3 Compliant	Compatible
ECCN Classification	EAR99	EAR99	Equivalent
HTSUS Code	8533.10.0065	8533.10.0065	Equivalent

Engineering Selection Recommendations

The CFR-50JB-52-3R3 manufactured by YAGEO is a direct functional equivalent to the CFR50J3R3. Both components are active production items with established supply availability. The YAGEO substitute carries ROHS3 compliance certification, which provides additional environmental regulatory alignment for applications subject to RoHS requirements. The temperature coefficient specification for the YAGEO part (-500/+350ppm/°C) encompasses the TE Connectivity specification (±350ppm/°C), ensuring thermal performance compatibility across the full operating range. Physical dimensions are compatible for standard through-hole PCB mounting, with the minor diameter variation (0.118" versus 0.130") presenting no functional impact on circuit board layout or assembly processes. Both components share identical ECCN and HTSUS classifications, maintaining consistent export and tariff treatment.

Frequently Asked Questions (FAQ)

Q: Can the CFR-50JB-52-3R3 be used as a direct replacement for the CFR50J3R3 in existing circuit designs?

A: Yes. Both components meet identical electrical specifications for resistance value (3.3 Ohms), tolerance (±5%), power rating (0.5W), and operating temperature range (-55°C to 155°C). The axial package configuration and two-terminal termination are identical, enabling direct substitution without circuit modification.

Q: What is the significance of the temperature coefficient difference between the two parts?

A: The CFR50J3R3 specifies ±350ppm/°C, while the CFR-50JB-52-3R3 specifies -500/+350ppm/°C. The YAGEO specification defines asymmetrical temperature behavior with a lower coefficient in the negative direction. This difference does not prevent substitution, as the YAGEO part remains within acceptable thermal drift parameters for standard resistor applications.

Q: Are there physical mounting differences between these components?

A: Physical dimensions are compatible for PCB mounting. The CFR50J3R3 has a diameter of 0.118" (3.00mm), while the CFR-50JB-52-3R3 has a diameter of 0.130" (3.30mm). Both share identical length (0.354" / 9.00mm). This minor diameter variation does not affect standard through-hole assembly or circuit board layout.

Q: What compliance advantages does the YAGEO substitute provide?

A: The CFR-50JB-52-3R3 carries ROHS3 compliance certification, whereas the TE Connectivity CFR50J3R3 is marked as not applicable for RoHS. For applications requiring RoHS compliance documentation, the YAGEO substitute provides regulatory alignment. Both components share identical ECCN (EAR99) and HTSUS (8533.10.0065) classifications.

Q: Are both parts available in equivalent packaging formats?

A: The CFR50J3R3 is available in standard packaging, while the CFR-50JB-52-3R3 is specified as bulk packaging. Both represent new original inventory with active production status. Packaging format does not affect electrical or mechanical performance.

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