Equivalent & Substitute Parts for PR103J2

Part Overview

The PR103J2 is an NTC thermistor with 10kΩ resistance at 25°C, manufactured by Littelfuse Inc. in a bead configuration with epoxy packaging. This component is classified as obsolete, making substitute parts necessary for new designs and ongoing production requirements. The PR103J2 operates across a temperature range of -55°C to 80°C with a maximum power dissipation of 30 mW and features free-hanging mounting configuration.

Substiute Parts

PR103J2

Littelfuse Inc.In Stock: 878PR103J2 Datasheet

Current PartRFQ

PS103J2

Littelfuse Inc.In Stock: 20228PS103J2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PR103J2 is based on the following critical parameters that must remain constant or compatible:

• Resistance value at 25°C: 10kΩ
• B0/50 thermal coefficient: 3892K
• Package configuration: Bead, Epoxy
• Lead wire length: 1.50" (38.00mm)
• Mounting type: Free Hanging
• Maximum power dissipation: 30 mW
• Regulatory compliance: ROHS3 Compliant

The PS103J2 qualifies as a direct substitute based on matching all electrical and mechanical parameters. The primary distinction is product status: PS103J2 is active production, whereas PR103J2 is obsolete.

Parameter Comparison

Engineering Selection Recommendations

The PS103J2 is the direct substitute for the PR103J2. Both components are manufactured by Littelfuse Inc. and maintain identical electrical characteristics and mechanical dimensions. The PS103J2 is preferred for new designs and production applications due to its active product status and extended operating temperature range (-80°C to 150°C versus -55°C to 80°C). Both parts maintain ROHS3 compliance and identical power dissipation ratings. The PS103J2 is available in bulk packaging, supporting production requirements.

Frequently Asked Questions (FAQ)

Q: Can PS103J2 directly replace PR103J2 in existing designs?

A: Yes. The PS103J2 maintains identical resistance value, B0/50 thermal coefficient, package configuration, lead wire length, and maximum power dissipation. The extended operating temperature range of PS103J2 provides additional margin for applications within the original PR103J2 temperature specification.

Q: What is the primary difference between PR103J2 and PS103J2?

A: The PR103J2 is obsolete, while PS103J2 is in active production. The PS103J2 also features an extended operating temperature range (-80°C to 150°C) compared to the PR103J2 (-55°C to 80°C). All electrical and mechanical parameters remain identical.

Q: Are there packaging differences between these parts?

A: Both components use identical bead epoxy packaging with 1.50" lead wire length and free-hanging mounting configuration. The PR103J2 was supplied in standard packaging, while PS103J2 is available in bulk packaging for production volumes.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both PR103J2 and PS103J2 are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with identical HTSUS coding (8533.40.8070).