MP4KE75AE3 Equivalent & Substitute Parts

Part Overview

The MP4KE75AE3 is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection applications. This through-hole component operates across a wide temperature range (-65°C to 150°C) and carries military-grade qualification under MIL-PRF-19500. The part is currently active in production with 807 units in stock. Substitute parts are identified to address packaging preferences, compliance requirements, or inventory availability while maintaining electrical equivalence.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	64.1	V
Voltage - Breakdown (Min)	71.3	V
Voltage - Clamping (Max) @ Ipp	103	V
Current - Peak Pulse (10/1000µs)	3.9	A
Power - Peak Pulse	400	W
Operating Temperature Range	-65 to 150	°C (TJ)
Package / Case	DO-204AL (DO-41)	Axial Through Hole
Type	Zener	Unidirectional
Unidirectional Channels	1	Channel

Substitute Part Grouping Explanation

Substitution of the MP4KE75AE3 with the P4KE75A is based on electrical parameter equivalence within the allowed tolerances for TVS diode applications. Both parts share identical voltage specifications (64.1V reverse standoff, 71.3V breakdown minimum, 103V clamping maximum), the same package form factor (DO-204AL/DO-41 axial through-hole), and equivalent power dissipation capability (400W peak pulse). The peak pulse current specification differs marginally (3.9A versus 4A), which remains within the functional operating envelope for general-purpose transient suppression. Both devices are classified as unidirectional Zener-type suppressors with single-channel configuration and unlimited moisture sensitivity rating (MSL 1). Substitution is valid based on these electrical and mechanical parameters.

Parameter Comparison

Parameter	MP4KE75AE3 (Microchip)	P4KE75A (Taiwan Semiconductor)	Match Status
Voltage - Reverse Standoff (Typ)	64.1V	64.1V	Equivalent
Voltage - Breakdown (Min)	71.3V	71.3V	Equivalent
Voltage - Clamping (Max) @ Ipp	103V	103V	Equivalent
Current - Peak Pulse (10/1000µs)	3.9A	4A	Compatible
Power - Peak Pulse	400W	400W	Equivalent
Package / Case	DO-204AL (DO-41)	DO-204AL (DO-41)	Equivalent
Type	Zener	Zener	Equivalent
Unidirectional Channels	1	1	Equivalent
Mounting Type	Through Hole	Through Hole	Equivalent
Applications	General Purpose	General Purpose	Equivalent
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Equivalent
REACH Status	REACH Unaffected	REACH Unaffected	Equivalent
ECCN	EAR99	EAR99	Equivalent
HTSUS	8541.10.0080	8541.10.0080	Equivalent

Engineering Selection Recommendations

MP4KE75AE3 (Microchip Technology): Select this part when military-grade qualification under MIL-PRF-19500 is a design requirement. This device is RoHS non-compliant and operates across the extended temperature range of -65°C to 150°C. Bulk packaging is available with 807 units in current inventory. This part is appropriate for applications requiring military specification compliance.

P4KE75A (Taiwan Semiconductor Corporation): Select this part when RoHS3 compliance is required for the end application. This substitute operates across the temperature range of -55°C to 175°C and is supplied in Tape & Reel packaging with 1046 units in current inventory. The peak pulse current specification is marginally higher at 4A compared to 3.9A on the main part. This part is appropriate for commercial and industrial applications requiring environmental compliance certification.

Both parts are active products with confirmed inventory availability. Selection between them depends on compliance requirements (military versus RoHS3) and packaging preference (bulk versus tape & reel).

Frequently Asked Questions (FAQ)

Q: Are the MP4KE75AE3 and P4KE75A electrically interchangeable?

A: Yes, within the specified electrical parameters. Both devices share identical voltage ratings (64.1V reverse standoff, 71.3V breakdown minimum, 103V clamping maximum) and power dissipation (400W peak pulse). The peak pulse current differs slightly (3.9A versus 4A), which is compatible for general-purpose transient suppression applications.

Q: What is the primary difference between these two parts?

A: The primary differences are compliance certification and packaging format. The MP4KE75AE3 carries military-grade qualification (MIL-PRF-19500) and is RoHS non-compliant, supplied in bulk packaging. The P4KE75A is RoHS3 compliant and supplied in Tape & Reel format. Operating temperature ranges also differ: -65°C to 150°C for the MP4KE75AE3 versus -55°C to 175°C for the P4KE75A.

Q: Can I use the P4KE75A in an application requiring MIL-PRF-19500 qualification?

A: No. The P4KE75A does not carry military-grade qualification. If MIL-PRF-19500 compliance is mandatory, the MP4KE75AE3 must be used.

Q: Are both parts suitable for through-hole PCB assembly?

A: Yes. Both the MP4KE75AE3 and P4KE75A use the DO-204AL (DO-41) axial through-hole package format and are compatible with standard through-hole assembly processes.

Q: Which part should I select for a commercial product requiring environmental compliance?

A: The P4KE75A is the appropriate choice for commercial applications requiring RoHS3 compliance. The MP4KE75AE3 is RoHS non-compliant and is designed for military and specialized applications.

Q: Do both parts have the same moisture sensitivity rating?

A: Yes. Both the MP4KE75AE3 and P4KE75A carry MSL 1 (Unlimited) moisture sensitivity level, indicating no moisture-related handling restrictions.

Q: What is the temperature operating range difference between these parts?

A: The MP4KE75AE3 operates from -65°C to 150°C (TJ), while the P4KE75A operates from -55°C to 175°C (TJ). The P4KE75A has a higher maximum operating temperature but a higher minimum temperature limit.

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