3KP160CA-B Equivalent & Substitute Parts

Part Overview

The 3KP160CA-B is a Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse, designed for general-purpose transient voltage protection in through-hole applications. This component features a 160V reverse standoff voltage with a 259V maximum clamping voltage and 11.6A peak pulse current capability. The part is currently classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

3KP160CA-B

LittelfuseIn Stock: 11083KP160CA-B Datasheet

Current PartRFQ

5KP160CA-B

Littelfuse Inc.In Stock: 11265KP160CA-B Datasheet

DirectRFQ

3KP160CA-TP

Micro Commercial CoIn Stock: 9453KP160CA-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 3KP160CA-B are identified based on the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Voltage - Reverse Standoff (Typ): 160V
• Voltage - Breakdown (Min): 178V
• Voltage - Clamping (Max) @ Ipp: 259V
• Operating Temperature Range: -55°C ~ 175°C (TJ)
• Type: Zener, Bidirectional

Mechanical Compatibility Criteria:

• Mounting Type: Through Hole
• Package / Case: P600 or R-6 Axial

Compliance Criteria:

• RoHS3 Compliant
• ECCN: EAR99

Parts meeting these parameters are classified as direct electrical and mechanical substitutes. Variations in peak pulse current (Ipp) and power dissipation are permitted when the substitute maintains or exceeds the original specifications, provided all other parameters remain within tolerance.

Parameter Comparison

Engineering Selection Recommendations

5KP160CA-B (Littelfuse Inc.): This substitute is manufactured by the original equipment manufacturer and maintains active product status. It provides identical voltage specifications and operating temperature range. The 5KP160CA-B offers enhanced peak pulse current (19.7A) and power dissipation (5000W) compared to the original 3KP160CA-B, making it suitable for applications requiring higher transient energy absorption. Both ROHS3 compliance and identical package designation (P600, Axial) ensure direct compatibility.

3KP160CA-TP (Micro Commercial Co): This substitute maintains electrical equivalence with identical voltage ratings, peak pulse current (11.6A), and power dissipation (3000W) specifications. The part is manufactured by an alternative supplier and holds active product status. The package designation differs (R-6 versus P600), requiring mechanical verification for board-level compatibility. ROHS3 compliance and REACH unaffected status are confirmed.

Frequently Asked Questions (FAQ)

Q: Can the 5KP160CA-B replace the 3KP160CA-B in all applications?

A: Yes, from an electrical and compliance standpoint. The 5KP160CA-B maintains identical voltage specifications (160V standoff, 259V clamping) and operating temperature range. The increased peak pulse current (19.7A) and power rating (5000W) provide enhanced protection margins. Package designation remains P600, Axial, ensuring mechanical compatibility.

Q: What is the difference between the P600 and R-6 packages?

A: Both are axial through-hole packages for TVS diodes. P600 and R-6 represent different physical form factors. Mechanical verification is required to confirm board-level compatibility when substituting between these package types, as lead spacing and component body dimensions may differ.

Q: Is the 3KP160CA-TP a direct replacement for the 3KP160CA-B?

A: The 3KP160CA-TP provides electrical equivalence with identical voltage and current specifications. However, the package designation differs (R-6 versus P600). Mechanical compatibility must be confirmed for your specific application before implementation.

Q: Why is the original 3KP160CA-B classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. Active substitutes from Littelfuse (5KP160CA-B) and alternative suppliers (3KP160CA-TP) are available to support ongoing design requirements.

Q: Are all listed substitutes RoHS3 compliant?

A: Yes. Both the 5KP160CA-B and 3KP160CA-TP are confirmed ROHS3 compliant, meeting environmental and regulatory requirements equivalent to the original 3KP160CA-B.