PX602J2 Equivalent & Substitute Parts

Part Overview

The PX602J2 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 PX602J2 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

PX602J2

Littelfuse Inc.In Stock: 1077PX602J2 Datasheet

Current PartRFQ

01C6001JF

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

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PX602J2 is based on the following critical parameters:

• Resistance Value: Both parts must maintain 6kΩ nominal resistance at 25°C
• Thermal Characteristics: B-value parameters determine temperature response; the substitute part provides B25/75 (3964K) and B25/85 (3974K) values, which are comparable to the original B0/50 specification
• Operating Temperature Range: The substitute extends to 125°C, exceeding the original 120°C maximum
• Power Dissipation: The substitute supports 100 mW, providing greater thermal headroom than the original 30 mW
• Package Type: Both are bead-type thermistors; the substitute uses standard bead packaging compatible with through-hole mounting
• Regulatory Compliance: Both parts maintain ROHS3 compliance and REACH unaffected status

The 01C6001JF from Vishay Beyschlag/Draloric/BC Components qualifies as a direct substitute based on matching resistance value, comparable thermal response, and superior operating specifications.

Parameter Comparison

Engineering Selection Recommendations

The 01C6001JF is suitable as a substitute for the PX602J2 based on the following factors:

• Product Status: The substitute is active and currently manufactured, ensuring long-term availability and supply chain continuity
• Regulatory Compliance: Both parts maintain ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements
• Electrical Compatibility: Matching 6kΩ resistance at 25°C ensures functional equivalence in temperature sensing applications
• Enhanced Specifications: The substitute provides extended operating temperature range (-40°C to 125°C) and increased power dissipation capability (100 mW), offering improved performance margins for existing designs
• Packaging Compatibility: Both components use bead-type construction; the substitute's through-hole mounting capability provides flexibility in circuit board integration

Frequently Asked Questions (FAQ)

Q: Can the 01C6001JF directly replace the PX602J2 in existing designs?

A: Yes. Both parts share the same 6kΩ resistance value at 25°C and bead-type construction. The substitute offers extended operating temperature range and higher power dissipation, making it functionally compatible for temperature sensing applications. Mounting method differences (free hanging vs. through hole) may require circuit board layout adjustments.

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

A: The primary differences are product status (obsolete vs. active), operating temperature range (120°C vs. -40°C to 125°C), power rating (30 mW vs. 100 mW), and mounting type (free hanging vs. through hole). The substitute provides superior thermal and power specifications.

Q: Are the B-value characteristics compatible?

A: The original PX602J2 specifies B0/50 as 3892K. The substitute provides B25/75 (3964K) and B25/85 (3974K), which represent comparable thermal response characteristics. These values fall within acceptable ranges for NTC thermistor substitution in temperature sensing applications.

Q: Does the substitute meet the same regulatory requirements?

A: Yes. Both the PX602J2 and 01C6001JF are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.

Q: What packaging considerations should be addressed?

A: The original part uses epoxy bead packaging for free-hanging applications. The substitute uses standard bead packaging with through-hole mounting capability. Circuit board design may require modification to accommodate the different mounting method, but electrical performance remains equivalent.