MPR20C4K7J Equivalent & Substitute Parts

Part Overview

The MPR20C4K7J is a 4.7 kOhms ±5% 20W through-hole resistor manufactured by TE Connectivity Passive Product in the TO-220-2 package. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity. The resistor features thick film construction with flame-proof and non-inductive characteristics, suitable for applications requiring high power dissipation in a compact form factor.

Substiute Parts

MPR20C4K7J

TE Connectivity Passive ProductIn Stock: 894MPR20C4K7J Datasheet

Current PartRFQ

RTO020F47000JTE3

Vishay SferniceIn Stock: 825RTO020F47000JTE3 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MPR20C4K7J is based on strict equivalence across the following critical parameters:

• Resistance Value: 4.7 kOhms (exact match required)
• Tolerance: ±5% (electrical accuracy specification)
• Power Rating: 20W (thermal and current handling capability)
• Package Type: TO-220-2 (mechanical and thermal interface)
• Composition: Thick Film (construction method and performance characteristics)
• Operating Temperature Range: -55°C to 155°C (environmental operating limits)
• Termination Count: 2 (circuit connectivity requirement)

The substitute part RTO020F47000JTE3 meets all these critical parameters. While secondary characteristics such as temperature coefficient and physical dimensions vary within acceptable engineering tolerances, the primary functional and mechanical specifications remain equivalent.

Parameter Comparison

Engineering Selection Recommendations

The RTO020F47000JTE3 serves as a direct functional substitute for the obsolete MPR20C4K7J. Selection of this alternative is supported by the following factors:

Product Status: The RTO020F47000JTE3 maintains active production status, ensuring long-term availability and supply chain reliability compared to the obsolete MPR20C4K7J.

Compliance and Certification: The RTO020F47000JTE3 is ROHS3 compliant, meeting current environmental and regulatory requirements for electronic components in most jurisdictions.

Electrical Equivalence: Both components share identical resistance value, tolerance, power rating, and operating temperature range. These parameters define the functional performance in circuit applications.

Mechanical Compatibility: Both components utilize the TO-220-2 package with two terminations, ensuring direct pin-compatible installation without circuit board modifications.

Thermal Performance: While the temperature coefficient differs (±150ppm/°C versus ±50ppm/°C), both values remain within acceptable ranges for standard industrial applications. The operating temperature range remains identical.

Frequently Asked Questions (FAQ)

Q: Can the RTO020F47000JTE3 be used as a direct replacement for the MPR20C4K7J without circuit board modifications?

A: Yes. Both components use the TO-220-2 package with identical pin configuration and two terminations. No circuit board layout changes are required for substitution.

Q: What is the significance of the different temperature coefficients between these parts?

A: The MPR20C4K7J has a temperature coefficient of ±50ppm/°C while the RTO020F47000JTE3 has ±150ppm/°C. Both values are within acceptable ranges for thick film resistors. The selection depends on application-specific temperature stability requirements. For applications with stringent temperature coefficient specifications, the original MPR20C4K7J specification should be verified against circuit requirements.

Q: Are there any differences in physical dimensions that affect thermal management?

A: Physical dimensions differ slightly. The MPR20C4K7J measures 0.417" L x 0.177" W with a maximum seated height of 0.748", while the RTO020F47000JTE3 measures 0.398" L x 0.177" W with a maximum seated height of 0.606". Both dimensions are within TO-220-2 package specifications. The RTO020F47000JTE3 has a lower profile, which may provide advantages in space-constrained applications.

Q: What is the difference between the packaging specifications listed?

A: The MPR20C4K7J is listed with a generic packaging designation, while the RTO020F47000JTE3 specifies Tube packaging. Both components are supplied in standard industry formats suitable for automated assembly processes.

Q: Does the ROHS3 compliance of the RTO020F47000JTE3 affect compatibility?

A: ROHS3 compliance indicates adherence to current environmental regulations and is generally beneficial for new designs and long-term supply chain sustainability. The compliance status does not affect electrical or mechanical compatibility with the original circuit design.

Q: Are both components suitable for the same power dissipation applications?

A: Yes. Both components are rated for 20W power dissipation with identical operating temperature ranges of -55°C to 155°C. Thermal management considerations remain equivalent between the two parts.