Equivalent & Substitute Parts for Molex 2138672637

Part Overview

The Molex 2138672637 is an NTC thermistor with a 10kΩ resistance at 25°C, configured as a ring lug cable assembly with 300mm lead wire length. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing system maintenance and new design implementations. The part operates across a temperature range of -40°C to 150°C with a maximum power dissipation of 100mW and is fully RoHS3 compliant.

Substiute Parts

2138672637

MolexIn Stock: 8242138672637 Datasheet

Current PartRFQ

2138651637

MolexIn Stock: 29652138651637 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Molex 2138672637 is determined by the following critical parameters:

• Resistance Value: 10kΩ at 25°C (exact match required)
• Package Type: Ring Lug configuration (mechanical compatibility)
• Lead Wire Length: 300mm (11.81 inches)
• Mounting Type: Free Hanging
• RoHS Compliance: ROHS3 Compliant
• Connector Interface: M3 or M4.6 ring lug terminal

The substitute part Molex 2138651637 meets these core substitution criteria. While thermal characteristics (B25/85 value) and operating temperature ranges differ, the fundamental electrical resistance, physical form factor, and lead wire dimensions remain compatible for direct replacement in applications where the specified thermal performance envelope is acceptable.

Parameter Comparison

Engineering Selection Recommendations

The Molex 2138651637 is an active product with current manufacturing support and improved resistance tolerance (±1% versus ±2%). Both parts maintain ROHS3 compliance and identical physical dimensions for ring lug cable assemblies.

Selection of the substitute part requires verification that the operating temperature ceiling of 105°C (versus 150°C for the original part) is acceptable for the intended application. The substitute part provides superior power dissipation capability at 150mW, which may offer operational advantages in certain thermal management scenarios.

Frequently Asked Questions (FAQ)

Q: Can the Molex 2138651637 directly replace the 2138672637 in all applications?

A: Direct replacement is mechanically and electrically feasible for the 10kΩ resistance value and ring lug form factor. However, the reduced maximum operating temperature of 105°C must be evaluated against application requirements. The original part supports operation to 150°C.

Q: What are the key differences between these two parts?

A: The primary differences are product status (obsolete versus active), operating temperature range (-40°C to 150°C versus -40°C to 105°C), resistance tolerance (±2% versus ±1%), and maximum power dissipation (100mW versus 150mW). Both maintain identical lead wire length and ring lug configuration.

Q: Are there packaging differences between these parts?

A: The main part is supplied without specified packaging, while the substitute is supplied in bag packaging. Both use identical ring lug terminal configurations and 300mm lead wire lengths.

Q: Does the substitute part meet the same compliance standards?

A: Yes. Both parts are ROHS3 compliant and carry identical ECCN and HTSUS classifications, ensuring regulatory equivalence for procurement and deployment.