PS602J2 NTC Thermistor 6kΩ Bead - Equivalent & Substitute Parts

Part Overview

The PS602J2 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 identification of suitable substitute parts essential for ongoing design support and production continuity. The PS602J2 operates within a maximum temperature range of 75°C and dissipates up to 30 mW, with lead wire length of 1.50" (38.00mm) in a free-hanging configuration.

Substiute Parts

PS602J2

Littelfuse Inc.In Stock: 1121PS602J2 Datasheet

Current PartRFQ

01C6001JF

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

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PS602J2 is determined by the following critical parameters:

• Resistance Value @ 25°C: Must be 6kΩ to maintain circuit impedance and thermal response characteristics
• B-Value Characteristics: The B0/50 value of 3892K defines the thermistor's temperature coefficient; substitute parts must demonstrate equivalent thermal sensitivity within acceptable engineering tolerances
• Power Dissipation Rating: Minimum 30 mW required to ensure the component can operate safely within the application's thermal budget
• Operating Temperature Range: Must accommodate the application's maximum operating temperature of 75°C
• Package Type: Bead configuration with compatible lead wire or through-hole mounting to ensure mechanical fit
• Regulatory Compliance: ROHS3 compliance and REACH unaffected status required for supply chain continuity

The substitute part 01C6001JF meets these criteria through equivalent 6kΩ resistance, compatible B-value range (B25/75: 3964K, B25/85: 3974K), higher power dissipation capability (100 mW), and extended operating temperature range (-40°C to 125°C).

Parameter Comparison

Engineering Selection Recommendations

The 01C6001JF from Vishay Beyschlag/Draloric/BC Components is the designated substitute for the obsolete PS602J2. Selection is based on the following engineering criteria:

• Electrical Equivalence: Both components maintain 6kΩ nominal resistance at 25°C, ensuring circuit-level compatibility
• Thermal Performance: The B-value parameters of the 01C6001JF (3964K at B25/75, 3974K at B25/85) are within acceptable range of the PS602J2's B0/50 value of 3892K, providing equivalent temperature sensing characteristics
• Regulatory Compliance: Both parts are ROHS3 compliant and REACH unaffected, meeting current supply chain requirements
• Product Availability: The 01C6001JF maintains active product status with current inventory, ensuring long-term procurement viability
• Performance Margin: The 01C6001JF's higher power dissipation rating (100 mW vs. 30 mW) and extended operating temperature range (-40°C to 125°C vs. 75°C) provide additional design margin

Frequently Asked Questions (FAQ)

Q: Can the 01C6001JF be used as a direct replacement for PS602J2 in existing designs?

A: Yes. Both components share the same 6kΩ resistance value at 25°C and compatible B-value characteristics. The primary consideration is mounting configuration: the PS602J2 uses free-hanging leads, while the 01C6001JF is configured for through-hole mounting. Mechanical integration must be verified for your specific application.

Q: What is the significance of the B-value in thermistor substitution?

A: The B-value defines the thermistor's temperature coefficient and determines how resistance changes across the operating temperature range. The PS602J2 specifies B0/50 = 3892K, while the 01C6001JF provides B25/75 = 3964K and B25/85 = 3974K. These values are sufficiently close to ensure equivalent thermal response in temperature sensing applications.

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

A: No. Power dissipation rating indicates the maximum power the component can safely handle without thermal damage. A higher rating (100 mW vs. 30 mW) provides additional safety margin and does not alter electrical behavior when operating within the original design's power budget.

Q: Are there any compliance differences between these parts?

A: Both the PS602J2 and 01C6001JF are ROHS3 compliant and REACH unaffected. No compliance barriers exist for substitution in regulated applications.

Q: What should be verified when substituting these components?

A: Verify mechanical fit (lead wire length and mounting configuration), confirm the application's operating temperature remains within the substitute part's range (-40°C to 125°C for the 01C6001JF), and validate that circuit-level resistance and thermal response characteristics remain acceptable for your specific sensing application.