KX602J2 Equivalent & Substitute Parts

Part Overview

The KX602J2 is an NTC thermistor manufactured by Littelfuse Inc., designed as a 6kΩ bead-type temperature sensor with epoxy packaging. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing applications and new designs. The KX602J2 operates at a maximum temperature of 120°C with a power rating of 30 mW and is suitable for free-hanging mounting applications.

Substiute Parts

KX602J2

Littelfuse Inc.In Stock: 1241KX602J2 Datasheet

Current PartRFQ

01C6001JF

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 80801C6001JF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the KX602J2 is determined by the following critical parameters:

• Resistance Value: 6kΩ at 25°C (primary electrical characteristic)
• Thermal Characteristics: B-value parameters that define temperature response curve
• Operating Temperature Range: Maximum operating temperature capability
• Power Dissipation Rating: Maximum power handling capacity
• Package Type: Bead configuration for mechanical compatibility
• Compliance Standards: RoHS3 and REACH compliance for regulatory alignment

The substitute part 01C6001JF meets these criteria as an active NTC thermistor with matching 6kΩ resistance at 25°C, compatible bead package, and superior operating temperature range (−40°C to 125°C). Both parts maintain ROHS3 compliance and EAR99 ECCN classification.

Parameter Comparison

Engineering Selection Recommendations

The 01C6001JF is a direct functional equivalent for the obsolete KX602J2. Both components share the same 6kΩ resistance specification and bead package configuration. The 01C6001JF offers enhanced specifications including an extended operating temperature range (−40°C to 125°C versus 120°C maximum) and increased power dissipation capability (100 mW versus 30 mW). Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for current manufacturing standards. The active product status of the 01C6001JF ensures long-term availability and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the 01C6001JF directly replace the KX602J2 in existing designs?

A: Yes. Both components share identical 6kΩ resistance at 25°C and bead package configuration. The 01C6001JF provides equivalent thermal sensing performance with enhanced operating temperature range and power rating.

Q: What are the key differences between these parts?

A: The primary differences are product status (KX602J2 is obsolete; 01C6001JF is active), operating temperature range (120°C maximum versus −40°C to 125°C), power dissipation (30 mW versus 100 mW), and mounting type (free hanging versus through hole).

Q: Are both parts RoHS compliant?

A: Yes. Both the KX602J2 and 01C6001JF are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: Does the higher power rating of the 01C6001JF affect circuit design?

A: The 01C6001JF's 100 mW power rating is a superset capability. Circuits designed for the 30 mW KX602J2 will operate within the 01C6001JF's specifications without modification.

Q: What is the significance of the B-value parameters?

A: B-values define the thermistor's temperature response curve. The 01C6001JF specifies B25/75 (3964K) and B25/85 (3974K) values, which characterize its thermal behavior across the operating range and ensure predictable temperature sensing performance.