TE Connectivity 1-1625973-1 Equivalent & Substitute Parts

Part Overview

The TE Connectivity 1-1625973-1 is a 12 Ohms ±5% 25W wirewound chassis mount resistor designed for high-power applications requiring thermal dissipation through aluminum housing and flanged mounting. This component features solder lug terminations and operates across a temperature range of -55°C to 200°C with a temperature coefficient of ±50ppm/°C.

The 1-1625973-1 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for systems utilizing this resistor specification.

Substiute Parts

1-1625973-1

TE Connectivity Passive ProductIn Stock: 11251-1625973-1 Datasheet

Current PartRFQ

THS2512RJ

TE Connectivity Passive ProductIn Stock: 1298THS2512RJ Datasheet

Parametric EquivalentRFQ

TMC02512R00FE02

Vishay DaleIn Stock: 1041TMC02512R00FE02 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 1-1625973-1 are identified based on electrical and mechanical parameter compatibility. The primary substitution criteria are:

Critical Parameters for Substitution:

• Resistance value: 12 Ohms (exact match required)
• Power rating: 25W (exact match required)
• Composition: Wirewound (exact match required)
• Mounting feature: Flanges (exact match required)
• Lead style: Solder Lugs (exact match required)
• Housing type: Aluminum (exact match required)

Allowable Parameter Variations:

• Tolerance: May be equal or tighter (±5% or better)
• Temperature coefficient: May be equal or lower (±50ppm/°C or better)
• Operating temperature range: May be equal or extended
• Physical dimensions: Minor variations acceptable within standard mechanical envelope constraints
• Packaging format: May differ (Tray, Bulk, or Axial Box)
• Product status: Active products preferred over obsolete

Parameter Comparison

Engineering Selection Recommendations

THS2512RJ (TE Connectivity Passive Product)

The THS2512RJ is a parametric equivalent to the 1-1625973-1, matching all critical electrical and mechanical specifications. This part is manufactured by the same supplier as the original component and maintains identical resistance, tolerance, power rating, temperature coefficient, and operating temperature range. The THS2512RJ is classified as active product status, ensuring ongoing availability and supply chain support. This part is ROHS3 compliant and represents the direct replacement path for obsolete 1-1625973-1 applications.

TMC02512R00FE02 (Vishay Dale)

The TMC02512R00FE02 is a similar manufacturer part that meets all critical substitution criteria with enhanced performance characteristics. This Vishay Dale wirewound chassis mount resistor provides tighter tolerance (±1% versus ±5%), lower temperature coefficient (±20ppm/°C versus ±50ppm/°C), and extended operating temperature range (-55°C to 250°C versus -55°C to 200°C). The TMC02512R00FE02 is active product status and ROHS3 compliant. Physical dimensions show minor variations within acceptable mechanical envelope tolerances. This part is suitable for applications requiring improved accuracy and thermal performance.

Frequently Asked Questions (FAQ)

Q: Can the THS2512RJ be used as a direct replacement for the 1-1625973-1?

A: Yes. The THS2512RJ is a parametric equivalent with identical electrical specifications (12 Ohms ±5%, 25W, ±50ppm/°C, -55°C to 200°C) and mechanical configuration (aluminum housing, flanged mounting, solder lugs). Both parts are manufactured by TE Connectivity Passive Product and share the same CGS series designation. The primary difference is product status: THS2512RJ is active while 1-1625973-1 is obsolete.

Q: What are the advantages of using TMC02512R00FE02 over THS2512RJ?

A: The TMC02512R00FE02 offers three performance enhancements: tighter tolerance (±1% versus ±5%), lower temperature coefficient (±20ppm/°C versus ±50ppm/°C), and extended operating temperature range (250°C maximum versus 200°C maximum). These characteristics make the Vishay Dale part suitable for applications requiring higher accuracy and thermal stability. Both parts maintain the same 25W power rating and 12 Ohm resistance value.

Q: Are there packaging differences between these substitute parts?

A: Yes. The 1-1625973-1 is supplied in Axial Box packaging. The THS2512RJ is supplied in Tray packaging. The TMC02512R00FE02 is supplied in Bulk packaging. All three parts maintain identical electrical and mechanical specifications; packaging differences reflect supplier inventory management and do not affect component functionality or performance.

Q: Do all three parts meet RoHS compliance requirements?

A: The THS2512RJ and TMC02512R00FE02 are both ROHS3 compliant. The 1-1625973-1 RoHS status is not specified in available documentation. Both active substitute parts satisfy current RoHS3 compliance requirements for new designs and production applications.

Q: What is the physical size difference between the main part and substitutes?

A: The 1-1625973-1 and THS2512RJ share identical dimensions: 1.142" L x 1.102" W (29.00mm x 28.00mm) with 0.591" (15.00mm) seated height. The TMC02512R00FE02 has slightly smaller dimensions: 1.062" L x 1.080" W (26.97mm x 27.43mm) with 0.561" (14.25mm) seated height. These dimensional variations remain within standard mechanical envelope tolerances for chassis mount resistor applications.

Q: Can TMC02512R00FE02 be used in applications originally designed for 1-1625973-1?

A: Yes. The TMC02512R00FE02 meets all critical substitution parameters: 12 Ohm resistance, 25W power rating, wirewound composition, aluminum housing, flanged mounting, and solder lug termination. The enhanced specifications (tighter tolerance, lower temperature coefficient, extended temperature range) provide equal or superior performance. Minor physical dimension differences are accommodated within standard mechanical design tolerances for flanged chassis mount resistor installations.