P4KE75C Equivalent & Substitute Parts

Part Overview

The P4KE75C is a bidirectional transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This component features a 64.1V reverse standoff voltage, 108.15V maximum clamping voltage, and 400W peak pulse power rating in a DO-204AL (DO-41) through-hole axial package. The P4KE75C is currently listed as obsolete, making equivalent substitute parts necessary for ongoing design support and production continuity. Substitute parts maintain the core electrical characteristics while offering active product status and improved availability.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	64.1	V
Voltage - Breakdown (Min)	67.55	V
Voltage - Clamping (Max) @ Ipp	108.15	V
Current - Peak Pulse (10/1000µs)	4	A
Power - Peak Pulse	400	W
Operating Temperature Range	-55 to 175	°C (TJ)
Mounting Type	Through Hole	—
Package / Case	DO-204AL, DO-41, Axial	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the P4KE75C are qualified based on the following electrical and mechanical parameters:

Reverse standoff voltage within 64V to 64.1V range
Clamping voltage at Ipp between 103V and 108.15V
Peak pulse current of 3.88A to 4A
Peak pulse power of 400W to 500W
Through-hole axial mounting configuration
Operating temperature range of -55°C to 150°C minimum (175°C preferred)
DO-204AL or DO-204AC package compatibility
ROHS3 compliance and general-purpose application classification

Substitutes are grouped into two categories: direct electrical equivalents with identical DO-204AL packaging, and functionally compatible alternatives with enhanced specifications (DO-204AC package with higher current rating).

Parameter Comparison

Parameter	P4KE75C (Littelfuse)	P4KE75CA (Taiwan Semi)	SA64CA (Taiwan Semi)	P4KE75CA-AP (MCC)	P4KE75CA-BP (MCC)	P4KE75CA-G (Comchip)	P4KE75CA-TP (MCC)
Voltage - Reverse Standoff (Typ)	64.1V	64.1V	64V	64.1V	64.1V	64.1V	64.1V
Voltage - Breakdown (Min)	67.55V	71.3V	71.1V	71.3V	71.3V	71.25V	71.3V
Voltage - Clamping (Max) @ Ipp	108.15V	103V	103V	103V	103V	103V	103V
Current - Peak Pulse (10/1000µs)	4A	4A	5A	4A	4A	3.88A	4A
Power - Peak Pulse	400W	400W	500W	400W	400W	400W	400W
Operating Temperature (TJ)	-55 to 175°C	-55 to 175°C	-55 to 175°C	-55 to 175°C	-55 to 175°C	-55 to 150°C	-55 to 175°C
Package / Case	DO-204AL (DO-41)	DO-204AL (DO-41)	DO-204AC (DO-15)	DO-41	DO-41	DO-41	DO-41
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	Not specified	Not specified	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

All substitute parts listed maintain active product status, ensuring long-term availability and manufacturing support. Selection should prioritize parts with confirmed ROHS3 compliance and REACH unaffected status for regulatory alignment.

P4KE75CA (Taiwan Semiconductor Corporation) and P4KE75CA-TP (Micro Commercial Co, Tape & Reel) provide direct electrical and mechanical equivalence to the P4KE75C with identical DO-204AL packaging and full temperature range support (-55°C to 175°C). These are primary substitutes for direct replacement.

SA64CA (Taiwan Semiconductor Corporation) offers enhanced specifications with 5A peak pulse current and 500W power rating in DO-204AC packaging. This substitute is suitable for applications requiring higher transient current handling capacity, though board layout modifications may be necessary due to package form factor differences.

P4KE75CA-AP and P4KE75CA-BP (Micro Commercial Co, Bulk packaging) provide equivalent electrical performance with standard DO-41 through-hole compatibility. These are suitable for high-volume production environments where bulk packaging is preferred.

P4KE75CA-G (Comchip Technology) maintains electrical compatibility with a maximum operating temperature of 150°C, which is 25°C lower than the original specification. This substitute is acceptable for applications with operating temperature requirements not exceeding 150°C.

Frequently Asked Questions (FAQ)

Q: Can P4KE75CA be used as a direct replacement for P4KE75C?

A: Yes. P4KE75CA maintains identical reverse standoff voltage (64.1V), equivalent clamping voltage (103V vs. 108.15V), matching peak pulse current (4A), and identical power rating (400W). Both use DO-204AL packaging and support the full -55°C to 175°C operating temperature range. The lower clamping voltage of P4KE75CA provides slightly tighter voltage regulation.

Q: What is the difference between SA64CA and P4KE75CA?

A: SA64CA uses DO-204AC (DO-15) packaging instead of DO-204AL (DO-41), features 5A peak pulse current versus 4A, and provides 500W power rating versus 400W. The reverse standoff voltage is nominally equivalent (64V vs. 64.1V). SA64CA is suitable for applications requiring higher transient current capacity but requires verification of board layout compatibility due to package differences.

Q: Are all substitute parts ROHS3 compliant?

A: P4KE75CA, SA64CA, P4KE75CA-G, and P4KE75CA-TP are confirmed ROHS3 compliant. P4KE75CA-AP and P4KE75CA-BP do not specify RoHS status in available documentation. Verification with the manufacturer is recommended for applications with mandatory RoHS compliance requirements.

Q: What is the impact of P4KE75CA-G's lower maximum operating temperature?

A: P4KE75CA-G supports -55°C to 150°C junction temperature, compared to 175°C for other substitutes. This 25°C reduction is acceptable for applications with maximum operating temperatures not exceeding 150°C. For high-temperature environments or applications with thermal margin requirements, alternative substitutes with full 175°C rating are preferred.

Q: Does packaging type affect electrical performance?

A: No. Packaging type (DO-204AL vs. DO-204AC, Bulk vs. Tape & Reel) does not affect electrical performance. Packaging selection is determined by board layout constraints, assembly process requirements, and inventory management preferences. Electrical characteristics remain consistent across all substitute parts within their specified parameter ranges.

Q: Which substitute offers the best availability?

A: SA64CA shows the highest inventory level at 5,400 pieces. P4KE75CA-G and P4KE75CA-TP each have approximately 960 and 935 pieces respectively. All substitutes are listed as active products with confirmed stock availability.

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