KTY83/120,153 Equivalent & Substitute Parts

Part Overview

The KTY83/120,153 is a PTC thermistor with 1 kOhm resistance at 25°C, manufactured by NXP USA Inc. in DO-204AG (DO-34) axial through-hole packaging. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement.

Substiute Parts

KTY83/120,153

NXP USA Inc.In Stock: 905KTY83/120,153 Datasheet

Current PartRFQ

KTY81/120,112

NXP USA Inc.In Stock: 1589KTY81/120,112 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the KTY83/120,153 is determined by the following critical parameters:

• Resistance value at 25°C: 1 kOhms (exact match required)
• Thermistor type: PTC (Positive Temperature Coefficient)
• Manufacturer: NXP USA Inc. (same manufacturer lineage)
• RoHS and REACH compliance status
• Operating temperature range capability
• Through-hole mounting compatibility

The KTY81/120,112 qualifies as a substitute based on matching resistance specification, PTC thermistor classification, identical manufacturer, and equivalent compliance certifications. Package form differs (TO-226-2/TO-92-2 versus DO-34 axial), requiring mechanical design verification for board layout compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the KTY83/120,153 and KTY81/120,112 maintain ROHS3 compliance and REACH unaffected status, supporting regulatory requirements for current manufacturing environments. The primary differentiation factor is the operating temperature maximum: the KTY83/120,153 extends to 175°C, while the KTY81/120,112 is rated to 150°C. Selection between these parts depends on whether the application requires the full 175°C upper temperature capability. Package geometry differs significantly (axial DO-34 versus radial TO-92-2), requiring PCB layout and mechanical mounting accommodation assessment.

Frequently Asked Questions (FAQ)

Q: Can KTY81/120,112 replace KTY83/120,153 in all applications?

A: Substitution is valid only if the application operating temperature does not exceed 150°C. The KTY83/120,153 supports operation to 175°C; the KTY81/120,112 does not. Additionally, package geometry differs, requiring PCB layout modification.

Q: Are there electrical performance differences between these parts?

A: Both components share identical resistance specification (1 kOhms @ 25°C) and PTC thermistor classification. Electrical performance is equivalent within their respective operating temperature ranges.

Q: Do both parts meet current regulatory requirements?

A: Yes. Both the KTY83/120,153 and KTY81/120,112 are ROHS3 compliant and REACH unaffected, supporting current manufacturing and environmental standards.

Q: What is the primary mechanical consideration for substitution?

A: Package form differs: KTY83/120,153 uses DO-34 axial configuration, while KTY81/120,112 uses TO-92-2 radial configuration. PCB footprint and lead routing must be re-evaluated for mechanical compatibility.

Q: Are both parts currently available?

A: Both components are classified as obsolete. Procurement should be directed toward current-generation alternatives from NXP or equivalent manufacturers meeting the specified electrical and compliance parameters.