GS153J1K Equivalent & Substitute Parts

Part Overview

The GS153J1K is an NTC thermistor manufactured by Littelfuse Inc., designed as a 15kΩ bead-type temperature sensor with a glass package. This component is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing applications and new designs. The part operates at temperatures up to 300°C and features through-hole mounting with 1.00" lead wire length.

Substiute Parts

GS153J1K

Littelfuse Inc.In Stock: 1059GS153J1K Datasheet

Current PartRFQ

01M1502KF

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 72301M1502KF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the GS153J1K is determined by the following critical parameters:

• Resistance Value: 15kΩ at 25°C with ±10% tolerance
• Thermal Characteristics: B-value parameters that define the thermistor's temperature response curve
• Package Configuration: Bead-type glass package with through-hole mounting
• Operating Temperature Range: Maximum continuous operating temperature capability
• Lead Wire Dimensions: Physical compatibility with existing PCB layouts and assembly processes

The substitute part 01M1502KF meets these criteria through matching resistance value, tolerance specification, compatible B-value characteristics, identical package type, and through-hole mounting configuration.

Parameter Comparison

Engineering Selection Recommendations

The 01M1502KF from Vishay Beyschlag/Draloric/BC Components is the designated manufacturer-recommended substitute for the obsolete GS153J1K. This substitution is supported by:

• Identical resistance value and tolerance specification
• B-value characteristics within 3K of the original part (3974K vs. 3977K at B25/85)
• Matching package configuration and through-hole mounting
• Active product status ensuring continued availability
• ROHS3 compliance certification for regulatory alignment
• Both parts share identical HTSUS and ECCN classifications

The primary design consideration is the operating temperature range difference: the substitute operates from −40°C to 125°C, compared to the original part's 300°C maximum. Applications requiring operation above 125°C require thermal performance validation against the substitute's specifications.

Lead wire length differs by 0.42" (10.60mm), which may require PCB layout adjustment in space-constrained applications.

Frequently Asked Questions (FAQ)

Q: Can the 01M1502KF directly replace the GS153J1K in all applications?

A: Direct replacement is valid for applications operating within the 01M1502KF's temperature range of −40°C to 125°C. Applications requiring operation above 125°C require alternative solutions, as the substitute's maximum operating temperature is significantly lower than the original part's 300°C rating.

Q: What is the significance of the B-value match between these parts?

A: The B-value defines the thermistor's resistance change across temperature ranges. The B25/85 values of 3977K (original) and 3974K (substitute) are within 0.08% variance, ensuring equivalent thermal response characteristics for temperature sensing applications.

Q: Does the lead wire length difference affect compatibility?

A: The 01M1502KF has 0.42" longer leads (1.42" vs. 1.00"). This requires verification against PCB layout constraints and assembly processes. Lead trimming may be necessary in space-limited designs.

Q: Are there compliance differences between the original and substitute?

A: The 01M1502KF carries ROHS3 compliance certification, whereas the original part's compliance status is not specified. Both parts are REACH Unaffected and share identical ECCN and HTSUS classifications.

Q: What inventory status should influence purchasing decisions?

A: The GS153J1K is obsolete with 949 units in stock. The 01M1502KF is active with 711 units available. For new designs or long-term production, the active substitute ensures supply chain continuity.