3KP10CA-B Equivalent & Substitute Parts

Part Overview

The 3KP10CA-B is a Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose transient voltage protection applications. This bidirectional Zener diode features a 10V reverse standoff voltage and 17V maximum clamping voltage, with a peak pulse current rating of 176.5A and 3kW peak pulse power handling capability. The part is mounted through-hole in a P600 axial package and operates across a temperature range of -55°C to 175°C.

The 3KP10CA-B is currently listed as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for new production runs and field replacements.

Substiute Parts

3KP10CA-B

Littelfuse Inc.In Stock: 11663KP10CA-B Datasheet

Current PartRFQ

5KP10CA-B

Littelfuse Inc.In Stock: 7465KP10CA-B Datasheet

DirectRFQ

3KP10CA-TP

Micro Commercial CoIn Stock: 10363KP10CA-TP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 3KP10CA-B are identified based on strict electrical and mechanical parameter matching within the TVS diode category. The following criteria determine substitution eligibility:

Critical Matching Parameters:

• Voltage - Reverse Standoff (Typ): 10V
• Voltage - Breakdown (Min): 11.1V
• Voltage - Clamping (Max) @ Ipp: 17V
• Operating Temperature Range: -55°C ~ 175°C (TJ)
• Mounting Type: Through Hole
• Bidirectional Channels: 1
• Type: Zener

Allowable Variations:

• Current - Peak Pulse (10/1000µs): May exceed the original specification
• Power - Peak Pulse: May exceed the original specification
• Package / Case: Alternative axial through-hole packages acceptable
• Manufacturer: Different manufacturers permitted if all electrical parameters match

Parameter Comparison

Engineering Selection Recommendations

5KP10CA-B (Littelfuse Inc.): This substitute is manufactured by the original equipment manufacturer and maintains active product status. It matches all critical electrical parameters while providing enhanced current handling (300A versus 176.5A) and power dissipation (5kW versus 3kW). ROHS3 compliance is confirmed. This part is suitable for direct replacement in applications where the increased current and power ratings do not create thermal or circuit design conflicts.

3KP10CA-TP (Micro Commercial Co): This substitute maintains identical electrical specifications and power ratings to the original part. It is manufactured by an alternative supplier and holds active product status. The package differs (R-6 versus P600), which may require PCB layout verification for mechanical fit. REACH status is unaffected. This part is suitable for replacement in applications where the R-6 axial package is compatible with existing board designs.

Frequently Asked Questions (FAQ)

Q: Can the 5KP10CA-B be used as a direct replacement for the 3KP10CA-B?

A: Yes. The 5KP10CA-B matches all critical electrical parameters: 10V reverse standoff voltage, 11.1V minimum breakdown voltage, and 17V maximum clamping voltage. Both parts use the P600 axial package and operate across -55°C to 175°C. The 5KP10CA-B provides higher current (300A) and power (5kW) ratings, making it suitable for the same application with enhanced transient protection capability.

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

A: Both are axial through-hole packages for TVS diodes. The P600 and R-6 are different mechanical form factors. The 3KP10CA-TP uses the R-6 package instead of the P600. PCB layout and component spacing must be verified to ensure mechanical compatibility before substitution.

Q: Are all substitute parts RoHS compliant?

A: The 5KP10CA-B is confirmed ROHS3 compliant. The 3KP10CA-TP does not specify RoHS status in the provided data. Verify RoHS compliance requirements with your supply chain or component distributor if regulatory compliance is mandatory for your application.

Q: Can I use the 3KP10CA-TP as a substitute if my design uses the P600 package?

A: The 3KP10CA-TP uses the R-6 package, not P600. Electrical parameters are identical, but mechanical fit on the PCB will differ. Verify that the R-6 package dimensions are compatible with your board layout and component spacing before substitution.

Q: Why is the 3KP10CA-B listed as obsolete?

A: The 3KP10CA-B is no longer in active production by Littelfuse Inc. The 5KP10CA-B serves as the active-status successor from the same manufacturer, offering improved performance specifications while maintaining electrical compatibility.