MPR20C47RJ Equivalent & Substitute Parts

Part Overview

The MPR20C47RJ is a 47 Ohm, 20W through-hole resistor manufactured by TE Connectivity Passive Product in a TO-220-2 package. This component is classified as obsolete, necessitating identification of equivalent alternatives for ongoing design requirements and production needs. The part features thick film construction with flame-proof and non-inductive characteristics, suitable for applications requiring reliable power dissipation in compact form factors.

Substiute Parts

MPR20C47RJ

TE Connectivity Passive ProductIn Stock: 997MPR20C47RJ Datasheet

Current PartRFQ

TR35JBC47R0

Stackpole Electronics IncIn Stock: 1009TR35JBC47R0 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete MPR20C47RJ is based on the following critical parameters that must remain constant or be exceeded:

Mandatory Matching Parameters:

• Resistance value: 47 Ohms
• Tolerance: ±5%
• Package/Case: TO-220-2
• Composition: Thick Film
• Temperature Coefficient: ±50ppm/°C
• Number of Terminations: 2

Allowable Parameter Variations:

• Power rating may be equal to or greater than 20W
• Operating temperature range may be equal to or exceed the original specification
• Physical dimensions may vary within package standard tolerances

The TR35JBC47R0 from Stackpole Electronics Inc qualifies as a direct substitute based on these criteria. This part maintains identical resistance, tolerance, package configuration, composition, and temperature coefficient while providing enhanced power handling capability (35W versus 20W) and an extended operating temperature range (-65°C ~ 175°C versus -55°C ~ 155°C).

Parameter Comparison

Engineering Selection Recommendations

The TR35JBC47R0 is the qualified substitute for the obsolete MPR20C47RJ. Selection of this alternative is based on the following engineering factors:

Product Status: The MPR20C47RJ is obsolete, while the TR35JBC47R0 is active and currently available in production quantities (994 Pcs in stock).

Electrical Compatibility: Both parts maintain identical resistance values, tolerance specifications, and temperature coefficients. The TR35JBC47R0 provides superior power handling at 35W compared to the original 20W specification, enabling operation in applications with equivalent or higher thermal demands without performance degradation.

Environmental Specifications: The TR35JBC47R0 extends the operating temperature range to -65°C ~ 175°C, providing broader environmental coverage than the original -55°C ~ 155°C specification.

Regulatory Compliance: The TR35JBC47R0 is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component procurement.

Package Compatibility: Both components utilize the TO-220-2 package configuration, ensuring mechanical and electrical compatibility with existing PCB layouts and thermal management solutions.

Frequently Asked Questions (FAQ)

Q: Can the TR35JBC47R0 be used as a direct replacement for the MPR20C47RJ in existing designs?

A: Yes. The TR35JBC47R0 maintains identical electrical specifications (47 Ohms, ±5% tolerance, ±50ppm/°C temperature coefficient) and package configuration (TO-220-2). The increased power rating (35W versus 20W) and extended operating temperature range provide enhanced performance margins without requiring design modifications.

Q: What is the significance of the higher power rating on the TR35JBC47R0?

A: The 35W rating on the TR35JBC47R0 compared to the 20W rating on the MPR20C47RJ indicates greater thermal dissipation capability. This allows the substitute part to operate reliably in applications with higher current loads or ambient temperatures while maintaining the same resistance value and tolerance.

Q: Are there physical dimension differences between these parts?

A: Minor dimensional variations exist within TO-220-2 package tolerances. The MPR20C47RJ has a maximum seated height of 0.748" (19.00mm), while the TR35JBC47R0 has a maximum seated height of 0.591" (15.00mm). Both parts are compatible with standard TO-220-2 footprints and thermal management hardware.

Q: Does the TR35JBC47R0 meet current regulatory standards?

A: Yes. The TR35JBC47R0 is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic component procurement and use.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution eligibility is determined by matching resistance value (47 Ohms), tolerance (±5%), package type (TO-220-2), composition (thick film), temperature coefficient (±50ppm/°C), and termination count (2). Power rating and operating temperature range may be equal to or exceed the original specification.