P4KE12CA-B Equivalent & Substitute Parts

Part Overview

The P4KE12CA-B is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This bidirectional Zener diode operates with a reverse standoff voltage of 10.2V and provides clamping at 16.7V with a peak pulse current rating of 24.6A. The component is housed in a DO-204AL (DO-41) axial through-hole package and maintains active product status with full RoHS3 compliance. Equivalent and substitute parts are identified based on matching electrical performance parameters and compatible package configurations.

Substiute Parts

P4KE12CA-B

Littelfuse Inc.In Stock: 953P4KE12CA-B Datasheet

Current PartRFQ

P4KE12CA

Taiwan Semiconductor CorporationIn Stock: 1111P4KE12CA Datasheet

MFR RecommendedRFQ

P6KE12CA

Taiwan Semiconductor CorporationIn Stock: 25662P6KE12CA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the P4KE12CA-B are qualified based on the following critical parameters that determine functional equivalence:

Electrical Matching Criteria:

• Voltage - Reverse Standoff (Typ): 10.2V
• Voltage - Clamping (Max) @ Ipp: 16.7V
• Bidirectional Channels: 1
• Type: Zener

Mechanical Compatibility Criteria:

• Mounting Type: Through Hole
• Package / Case: DO-204AL (DO-41) or compatible axial packages

Compliance Requirements:

• RoHS3 Compliant
• Product Status: Active

The P4KE12CA (Taiwan Semiconductor Corporation) maintains identical electrical specifications and operates in the same DO-204AL package with Tape & Reel packaging. The P6KE12CA (Taiwan Semiconductor Corporation) provides enhanced current handling (36A vs. 24.6A) and power dissipation (600W vs. 400W) while maintaining the same voltage parameters, but operates in a DO-15 package configuration.

Parameter Comparison

Engineering Selection Recommendations

P4KE12CA (Taiwan Semiconductor Corporation): This substitute maintains electrical and thermal specifications identical to the P4KE12CA-B while offering equivalent through-hole mounting in the DO-204AL package. Both components are ROHS3 compliant with active product status. Selection of this substitute is appropriate for direct replacement in existing designs without circuit modification.

P6KE12CA (Taiwan Semiconductor Corporation): This substitute provides the same voltage regulation characteristics (10.2V standoff, 16.7V clamping) as the main part but with increased current capacity (36A vs. 24.6A) and power dissipation (600W vs. 400W). The component operates in a DO-15 package, which differs from the DO-204AL configuration. This substitute is suitable for applications requiring enhanced transient current handling while maintaining voltage protection parameters. ROHS3 compliance is confirmed.

Frequently Asked Questions (FAQ)

Q: Can P4KE12CA replace P4KE12CA-B directly? A: Yes. Both components share identical electrical specifications (10.2V standoff, 16.7V clamping, 24.6A/25A peak pulse current) and operate in the same DO-204AL through-hole package. Packaging format differs (Bulk vs. Tape & Reel), but electrical performance is equivalent.

Q: What is the primary difference between P4KE12CA and P6KE12CA? A: The P6KE12CA provides higher current capacity (36A vs. 25A) and power dissipation (600W vs. 400W) while maintaining identical voltage parameters. The P6KE12CA operates in a DO-15 package instead of DO-204AL, requiring PCB layout adjustment.

Q: Are all substitute parts RoHS3 compliant? A: Yes. Both P4KE12CA and P6KE12CA are ROHS3 compliant, matching the compliance status of the P4KE12CA-B.

Q: Can P6KE12CA be used in applications designed for P4KE12CA-B? A: Electrical substitution is valid based on voltage parameters. However, the DO-15 package differs from DO-204AL, requiring PCB footprint verification and layout modification before implementation.

Q: What determines whether a TVS diode can substitute for P4KE12CA-B? A: Functional substitution requires matching reverse standoff voltage (10.2V), clamping voltage (16.7V), and bidirectional channel configuration (1 channel). Package compatibility and through-hole mounting type must also be verified for mechanical fit.