KTY83/122,113 Equivalent & Substitute Parts

Part Overview

The KTY83/122,113 is a PTC thermistor with a resistance of 1.01 kOhms at 25°C, manufactured by NXP USA Inc. in a DO-204AG (DO-34) axial through-hole package. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and procurement.

The KTY83 series has been superseded in production, necessitating alternative components that maintain functional equivalence for temperature sensing applications within the specified operating range.

Substiute Parts

KTY83/122,113

NXP USA Inc.In Stock: 776KTY83/122,113 Datasheet

Current PartRFQ

KTY81/122,112

NXP USA Inc.In Stock: 2217KTY81/122,112 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the KTY83/122,113 is determined by the following critical parameters:

• Resistance Value: 1.01 kOhms at 25°C (exact match required)
• Mounting Type: Through Hole configuration
• Operating Temperature Range: Minimum -55°C to maximum 150°C or higher
• RoHS Compliance: ROHS3 Compliant status maintained
• Moisture Sensitivity: MSL 1 (Unlimited) classification

The KTY81/122,112 qualifies as a substitute based on matching resistance value, through-hole mounting, overlapping operating temperature range, and equivalent compliance certifications. Package form factor differs (TO-226-2 vs. DO-34), requiring mechanical layout verification during implementation.

Parameter Comparison

Engineering Selection Recommendations

The KTY81/122,112 serves as a functional equivalent for the KTY83/122,113 based on electrical parameters and compliance certifications. Both components are ROHS3 compliant and maintain MSL 1 classification.

The primary consideration for selection is the reduced maximum operating temperature of the KTY81/122,112 (150°C vs. 175°C). Applications requiring operation above 150°C must retain the original KTY83/122,113 specification or identify alternative components with higher temperature ratings.

Package geometry differs between the two parts. The KTY83/122,113 uses a DO-34 axial configuration, while the KTY81/122,112 employs a TO-92-2 radial package. PCB layout and mechanical clearance must be verified before substitution.

Frequently Asked Questions (FAQ)

Q: Can the KTY81/122,112 replace the KTY83/122,113 in all applications?

A: Electrical substitution is valid for applications operating at or below 150°C. Applications requiring the full -55°C to 175°C range must use the original part or identify alternatives rated to 175°C. Package geometry differences require mechanical verification.

Q: What is the significance of the different package types?

A: The KTY83/122,113 uses a DO-34 axial package with leads extending from opposite ends. The KTY81/122,112 uses a TO-92-2 radial package with leads extending from the same end. These configurations occupy different PCB footprints and require distinct mounting hole patterns.

Q: Are both parts equally available?

A: Both components are classified as obsolete. Availability through authorized distributors should be verified before design commitment. The KTY81/122,112 shows higher current inventory levels in the provided data.

Q: Do compliance certifications differ between the parts?

A: Both parts maintain ROHS3 compliance, REACH Unaffected status, and identical MSL 1 classification. No compliance disadvantage exists for substitution from a regulatory perspective.

Q: What parameters must remain constant for substitution?

A: The 1.01 kOhms resistance value at 25°C is the primary electrical parameter. Operating temperature range, mounting type, and compliance status must be verified against application requirements. Package form factor must be accommodated in the mechanical design.