P4KE13C Equivalent & Substitute Parts

Part Overview

The P4KE13C is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in through-hole applications. This bidirectional zener diode operates at a reverse standoff voltage of 11.1V with a peak pulse power rating of 400W and is packaged in the DO-204AL (DO-41) axial format. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing circuit protection requirements and design continuity.

Key Parameters

Parameter	Value
Reverse Standoff Voltage (Typ)	11.1V
Voltage - Breakdown (Min)	11.75V
Voltage - Clamping (Max) @ Ipp	19.11V
Current - Peak Pulse (10/1000µs)	22.5A
Power - Peak Pulse	400W
Package / Case	DO-204AL, DO-41, Axial
Operating Temperature	-55°C ~ 175°C (TJ)
Type	Zener, Bidirectional
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the P4KE13C are grouped based on the following critical parameters that determine functional equivalence:

Primary Substitution Criteria:

Reverse standoff voltage within the same voltage class (11.1V nominal)
Clamping voltage compatibility (maximum 19.11V @ Ipp)
Peak pulse current capability (minimum 22.5A)
Through-hole mounting compatibility
Operating temperature range (-55°C to 175°C)
ROHS3 compliance and general-purpose application classification

Grouping Logic:

Group 1: Direct Package Equivalents (DO-204AL / DO-41) Parts maintaining identical package format with matching voltage and power specifications. These provide pin-for-pin compatibility with minimal circuit redesign.

Group 2: Higher Power Alternatives (DO-201 / 1.5KE Series) Parts with increased power dissipation (1500W vs 400W) and higher peak pulse current capability. These accommodate applications requiring enhanced transient protection margins while maintaining voltage class compatibility.

Group 3: Intermediate Power Options (DO-15 / P6KE Series) Parts with 600W power rating and DO-15 package format. These bridge the gap between standard 400W and high-power 1500W options, suitable for applications with moderate overvoltage stress.

Parameter Comparison

Part Number	Manufacturer	Reverse Standoff (Typ)	Clamping Voltage @ Ipp	Peak Pulse Current	Power - Peak Pulse	Package	Product Status
P4KE13C	Littelfuse Inc.	11.1V	19.11V	22.5A	400W	DO-204AL (DO-41)	Obsolete
P4KE13CA	Taiwan Semiconductor Corporation	11.1V	18.2V	23A	400W	DO-204AL (DO-41)	Active
P4KE12CA	Taiwan Semiconductor Corporation	10.2V	16.7V	25A	400W	DO-204AL (DO-41)	Active
P4KE11CA	Taiwan Semiconductor Corporation	9.4V	15.6V	27A	400W	DO-204AL (DO-41)	Active
1.5KE13CA	Taiwan Semiconductor Corporation	11.1V	18.2V	86A	1500W	DO-201AA (DO-27)	Active
1.5KE12CA	Taiwan Semiconductor Corporation	10.2V	16.7V	94A	1500W	DO-201AA (DO-27)	Active
1.5KE11CA	Taiwan Semiconductor Corporation	9.4V	15.6V	100A	1500W	DO-201AA (DO-27)	Active
P6KE13CA	Fairchild Semiconductor	11.1V	18.2V	34A	600W	DO-204AC (DO-15)	Active
P6KE12CA	Taiwan Semiconductor Corporation	10.2V	16.7V	36A	600W	DO-204AC (DO-15)	Active
P6KE11CA	Taiwan Semiconductor Corporation	9.4V	15.6V	38A	600W	DO-204AC (DO-15)	Active
SA10CA	Taiwan Semiconductor Corporation	10V	17V	30A	500W	DO-204AC (DO-15)	Active

Engineering Selection Recommendations

Primary Recommendation: P4KE13CA

The P4KE13CA from Taiwan Semiconductor Corporation is the direct functional equivalent of the P4KE13C. It maintains identical reverse standoff voltage (11.1V), matching clamping voltage (18.2V), equivalent peak pulse current (23A), and identical 400W power rating. The part is packaged in DO-204AL (DO-41) format, providing direct pin-for-pin compatibility. Product status is Active with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1), ensuring long-term availability and regulatory compliance.

Secondary Recommendation: 1.5KE13CA

The 1.5KE13CA provides enhanced protection margin with 1500W peak pulse power and 86A peak pulse current capability while maintaining the same 11.1V reverse standoff voltage and 18.2V clamping voltage. This part requires circuit board layout modification due to DO-201AA (DO-27) package format but is suitable for applications experiencing higher transient stress or requiring design margin enhancement. Product status is Active with full ROHS3 and REACH compliance.

Tertiary Recommendation: P6KE13CA

The P6KE13CA offers 600W power dissipation with 34A peak pulse current in DO-15 package format. This intermediate power option maintains voltage compatibility (11.1V standoff, 18.2V clamping) and is suitable for applications requiring moderate protection enhancement without full 1500W capability. Manufactured by Fairchild Semiconductor with Active product status.

Voltage Class Alternatives:

For applications tolerating lower voltage thresholds, P4KE12CA (10.2V standoff) and P4KE11CA (9.4V standoff) provide active alternatives in identical DO-204AL packaging with 400W power rating. These parts are suitable only when circuit design permits lower protection thresholds.

Frequently Asked Questions (FAQ)

Q: Can P4KE13CA be used as a direct replacement for P4KE13C?

A: Yes. The P4KE13CA is functionally equivalent with matching reverse standoff voltage (11.1V), clamping voltage (18.2V), peak pulse current (23A), and power rating (400W). Both use DO-204AL (DO-41) axial through-hole packaging, enabling direct substitution without circuit modification.

Q: What is the difference between P4KE13CA and 1.5KE13CA?

A: Both maintain 11.1V reverse standoff voltage and 18.2V clamping voltage. The primary differences are power rating (400W vs 1500W), peak pulse current (23A vs 86A), and package format (DO-204AL vs DO-201AA). The 1.5KE13CA provides enhanced transient protection but requires board layout redesign due to different package dimensions.

Q: Can I use P6KE13CA instead of P4KE13C?

A: P6KE13CA maintains voltage compatibility (11.1V standoff, 18.2V clamping) with higher power capability (600W vs 400W) and peak pulse current (34A vs 22.5A). However, the DO-15 package format differs from the original DO-41 package, requiring circuit board layout modification. This substitution is valid when board redesign is feasible.

Q: Are lower voltage alternatives (P4KE12CA, P4KE11CA) suitable replacements?

A: These parts are suitable only if circuit design permits lower protection thresholds. P4KE12CA operates at 10.2V standoff voltage, and P4KE11CA at 9.4V standoff voltage. Both maintain 400W power rating and DO-204AL packaging. Use these alternatives only when the protected circuit can tolerate reduced voltage protection margins.

Q: What compliance certifications apply to substitute parts?

A: All recommended substitute parts maintain ROHS3 compliance. The 1.5KE series additionally carries REACH Unaffected status. All parts are classified as general-purpose transient voltage suppressors with EAR99 export classification and HTSUS code 8541.10.0080.

Q: How do I select between 400W, 600W, and 1500W options?

A: Selection depends on transient stress levels in the protected circuit. The 400W P4KE13CA provides direct replacement capability. The 600W P6KE13CA offers moderate protection enhancement. The 1500W 1.5KE13CA provides maximum protection margin for high-stress applications. Consult circuit transient analysis to determine required power dissipation capability.

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