MP4KE47AE3 Equivalent & Substitute Parts

Part Overview

The MP4KE47AE3 is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose transient voltage protection applications. This through-hole component operates across a wide temperature range (-65°C to 150°C) and carries MIL-PRF-19500 military qualification. The part is currently active in production with 876 units in stock. Substitute parts are identified to address packaging preferences, compliance requirements, or inventory availability while maintaining electrical and mechanical compatibility.

Substiute Parts

MP4KE47AE3

Microchip TechnologyIn Stock: 927MP4KE47AE3 Datasheet

Current PartRFQ

P4KE47A

Taiwan Semiconductor CorporationIn Stock: 785P4KE47A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MP4KE47AE3 is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Voltage - Reverse Standoff (Typ): 40.2V
• Voltage - Breakdown (Min): 44.7V
• Voltage - Clamping (Max) @ Ipp: 64.8V
• Current - Peak Pulse (10/1000µs): minimum 6.2A
• Power - Peak Pulse: 400W
• Type: Zener
• Unidirectional Channels: 1

Mechanical Compatibility Requirements:

• Package / Case: DO-204AL (DO-41) Axial
• Mounting Type: Through Hole

The substitute part P4KE47A meets all electrical parameters with equivalent or superior ratings and maintains identical mechanical compatibility. Differences in packaging format (Tape & Reel versus Bulk), operating temperature range, and compliance certifications do not affect functional substitution in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

MP4KE47AE3 (Microchip Technology) is the primary selection for applications requiring MIL-PRF-19500 military qualification. This part carries military-grade certification and is supplied in bulk packaging. The operating temperature range of -65°C to 150°C is suitable for standard industrial and military applications.

P4KE47A (Taiwan Semiconductor Corporation) serves as a functional equivalent for general-purpose applications where military qualification is not required. This substitute offers ROHS3 compliance, making it suitable for applications subject to RoHS directives. The extended operating temperature range (-55°C to 175°C) and marginally higher peak pulse current rating (6.4A versus 6.2A) provide additional design margin. Tape & Reel packaging is standard for high-volume production environments.

Selection between these parts depends on compliance requirements, packaging format needs, and temperature operating envelope specifications for the target application.

Frequently Asked Questions (FAQ)

Q: Can P4KE47A replace MP4KE47AE3 in a military-qualified design?

A: P4KE47A does not carry MIL-PRF-19500 qualification. If military qualification is a design requirement, MP4KE47AE3 must be used. For non-military applications, P4KE47A is electrically and mechanically compatible.

Q: What is the difference between Bulk and Tape & Reel packaging?

A: Bulk packaging (MP4KE47AE3) is supplied loose in containers, suitable for small-quantity orders and manual assembly. Tape & Reel packaging (P4KE47A) is wound on continuous tape for automated pick-and-place assembly equipment. Both formats contain identical components.

Q: Are the voltage ratings identical between these parts?

A: Yes. Both parts share identical reverse standoff voltage (40.2V), breakdown voltage (44.7V), and clamping voltage (64.8V) specifications. These parameters determine circuit protection performance.

Q: Does the higher peak pulse current rating of P4KE47A affect compatibility?

A: No. The P4KE47A rating of 6.4A exceeds the MP4KE47AE3 requirement of 6.2A. Higher current ratings provide additional design margin and do not create compatibility issues in circuits designed for 6.2A operation.

Q: Which part should be selected for RoHS-compliant designs?

A: P4KE47A carries ROHS3 compliance certification. MP4KE47AE3 is RoHS non-compliant. For applications subject to RoHS directives, P4KE47A is the appropriate selection.

Q: Are both parts suitable for the same temperature range?

A: MP4KE47AE3 operates from -65°C to 150°C. P4KE47A operates from -55°C to 175°C. P4KE47A covers a wider temperature range. For applications requiring operation below -55°C, MP4KE47AE3 is required.

Q: Can these parts be used interchangeably in PCB designs?

A: Yes, for non-military applications. Both parts use identical DO-204AL (DO-41) axial through-hole packages with matching pinout and mechanical dimensions. PCB layouts require no modification for substitution.