MP6KE47AE3 Equivalent & Substitute Parts

Part Overview

The MP6KE47AE3 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 with a reverse standoff voltage of 40.2V and provides clamping at 64.8V with a peak pulse current rating of 9.3A. The device is classified as Active product status and carries Military grade qualification under MIL-PRF-19500. Substitute parts are identified when equivalent electrical performance parameters are maintained across alternative manufacturers and package configurations, particularly when original inventory availability is limited or when RoHS compliance requirements necessitate alternative sourcing.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	40.2	V
Voltage - Breakdown (Min)	44.7	V
Voltage - Clamping (Max) @ Ipp	64.8	V
Current - Peak Pulse (10/1000µs)	9.3	A
Power - Peak Pulse	600	W
Operating Temperature Range	-65 to 150	°C (TJ)
Type	Zener	-
Unidirectional Channels	1	-
Mounting Type	Through Hole	-

Substitute Part Grouping Explanation

Substitution of the MP6KE47AE3 is determined by strict equivalence of the following electrical and mechanical parameters:

Critical Substitution Parameters:

Voltage - Reverse Standoff (Typ): 40.2V
Voltage - Clamping (Max) @ Ipp: 64.8V
Current - Peak Pulse (10/1000µs): 9.3A
Power - Peak Pulse: 600W
Type: Zener (unidirectional)
Unidirectional Channels: 1
Mounting Type: Through Hole

The substitute part P6KE47A, manufactured by Taiwan Semiconductor Corporation, maintains identical electrical performance across all critical parameters. While the package configuration differs (DO-15 versus T-18), both are through-hole axial packages suitable for equivalent circuit board integration. The substitute part achieves ROHS3 compliance, whereas the original MP6KE47AE3 is RoHS non-compliant, making P6KE47A suitable for applications requiring RoHS-compliant component sourcing.

Parameter Comparison

Parameter	MP6KE47AE3 (Microchip)	P6KE47A (Taiwan Semiconductor)	Match Status
Voltage - Reverse Standoff (Typ)	40.2V	40.2V	Equivalent
Voltage - Breakdown (Min)	44.7V	44.7V	Equivalent
Voltage - Clamping (Max) @ Ipp	64.8V	64.8V	Equivalent
Current - Peak Pulse (10/1000µs)	9.3A	9.3A	Equivalent
Power - Peak Pulse	600W	600W	Equivalent
Type	Zener	Zener	Equivalent
Unidirectional Channels	1	1	Equivalent
Mounting Type	Through Hole	Through Hole	Equivalent
Package / Case	T-18, Axial	DO-204AC, DO-15, Axial	Different Package
Product Status	Active	Active	Equivalent
RoHS Status	RoHS non-compliant	ROHS3 Compliant	Different Compliance
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

MP6KE47AE3 (Microchip Technology): Select this part when Military grade qualification under MIL-PRF-19500 is a contractual or design requirement. The component carries Military grade designation and is suitable for defense and aerospace applications requiring formal military qualification documentation. Operating temperature range extends to -65°C to 150°C (TJ). This part is appropriate for applications where RoHS non-compliance is acceptable or where legacy system compatibility is required.

P6KE47A (Taiwan Semiconductor Corporation): Select this substitute when RoHS3 compliance is mandatory for the end application or when commercial product certifications are required. The P6KE47A maintains all critical electrical parameters identical to the MP6KE47AE3 and is suitable for general commercial and industrial applications. The DO-15 package configuration is widely available with significantly higher inventory (300,100 pcs) compared to the T-18 package. This part is appropriate when supply chain continuity and regulatory compliance take precedence over military qualification requirements.

Both parts share identical electrical performance and are functionally interchangeable from a circuit protection standpoint. Package selection (T-18 versus DO-15) depends on printed circuit board layout and mechanical mounting constraints.

Frequently Asked Questions (FAQ)

Q: What are the critical electrical parameters that define substitution compatibility for the MP6KE47AE3?

A: The critical parameters are: Voltage - Reverse Standoff (40.2V), Voltage - Clamping (64.8V), Current - Peak Pulse (9.3A), and Power - Peak Pulse (600W). Any substitute must match these values exactly. The device type (Zener, unidirectional) and channel count (1) must also remain constant.

Q: Can the P6KE47A be used as a direct replacement for the MP6KE47AE3 in existing designs?

A: The P6KE47A is electrically equivalent and functionally interchangeable. However, the package differs (DO-15 versus T-18). Both are through-hole axial packages, but physical dimensions and lead spacing may differ. Verify that the printed circuit board layout accommodates the DO-15 package footprint before substitution.

Q: What is the difference between the T-18 and DO-15 packages?

A: Both are through-hole axial packages for transient voltage suppressors. T-18 is the package designation used by Microchip Technology, while DO-15 (also designated DO-204AC) is the industry-standard package designation used by Taiwan Semiconductor Corporation. Physical dimensions and lead spacing differ between these packages, requiring PCB layout verification.

Q: Why does the MP6KE47AE3 have Military grade qualification while the P6KE47A does not?

A: The MP6KE47AE3 carries MIL-PRF-19500 qualification, indicating it meets military procurement specifications. The P6KE47A is a commercial-grade component from Taiwan Semiconductor Corporation and does not carry military qualification. Select the MP6KE47AE3 when military specifications are contractually required; select P6KE47A for commercial applications.

Q: What is the significance of RoHS compliance differences between these parts?

A: The MP6KE47AE3 is RoHS non-compliant, while the P6KE47A is ROHS3 compliant. RoHS3 compliance indicates the component meets Restriction of Hazardous Substances regulations and contains no restricted materials. Select P6KE47A when RoHS compliance is required by customer specifications or regulatory requirements.

Q: Are there operating temperature differences between the MP6KE47AE3 and P6KE47A?

A: The MP6KE47AE3 specifies an operating temperature range of -65°C to 150°C (TJ). The P6KE47A does not provide an operating temperature specification in the available data. For applications requiring confirmed low-temperature operation below 0°C or high-temperature operation above 125°C, verify the P6KE47A datasheet with the manufacturer.

Q: What inventory considerations apply to these parts?

A: The MP6KE47AE3 has 678 pcs in stock (T-18 package). The P6KE47A has 300,100 pcs in stock (DO-15 package). The P6KE47A offers significantly higher availability, making it suitable for high-volume production or when rapid delivery is required.

Q: Can the P6KE47A be used in applications originally designed for the MP6KE47AE3?

A: Yes, provided that: (1) the printed circuit board layout accommodates the DO-15 package footprint, (2) Military grade qualification is not a contractual requirement, and (3) RoHS compliance is acceptable or required. Electrical performance is identical, ensuring equivalent circuit protection.

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