MPTE-5 Transient Voltage Suppressor Equivalent & Substitute Parts

Part Overview

The MPTE-5 is a 5V unidirectional Zener transient voltage suppressor diode manufactured by Littelfuse Inc., housed in a DO-201AD axial through-hole package. This component is designed for general-purpose transient voltage suppression applications with a peak pulse power rating of 1500W. The MPTE-5 is classified as obsolete, making identification of functionally equivalent active alternatives necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	5V
Voltage - Breakdown (Min)	6V
Voltage - Clamping (Max) @ Ipp	7.5V
Power - Peak Pulse	1500W (1.5kW)
Type	Zener
Unidirectional Channels	1
Mounting Type	Through Hole
Package / Case	DO-201AD, Axial
Operating Temperature	-55°C ~ 150°C (TJ)

Substitute Part Grouping Explanation

Substitution eligibility for the MPTE-5 is determined by the following electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - Reverse Standoff (Typ): 5V
Voltage - Breakdown (Min): 6V
Voltage - Clamping (Max) @ Ipp: 7.5V (±tolerance acceptable)
Power - Peak Pulse: 1500W minimum
Type: Zener, Unidirectional
Mounting Type: Through Hole
Package compatibility: DO-201AD or equivalent axial packages (DO-201AA, DO-27)

Substitute parts are grouped into two categories:

Category A - Direct Electrical & Package Match (1500W, 7.5V Clamp): Parts with identical clamping voltage (7.5V), matching 1500W power rating, and compatible through-hole axial packages. These provide direct functional equivalence with minimal circuit redesign.

Category B - Functional Equivalents (1500W, Higher Clamp Voltage): Parts with 1500W power rating but higher clamping voltages (8.5V–10.5V). These provide transient suppression at the same power level with slightly elevated clamping characteristics, suitable where the application tolerates higher voltage clamping.

Category C - Higher Power Alternatives (3kW–5kW): Parts with elevated power ratings (3kW–5kW) and higher clamping voltages. These are suitable only where circuit design permits increased power dissipation and higher clamping voltage thresholds.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Package / Case	Operating Temperature	Product Status	RoHS Status
MPTE-5	Littelfuse Inc.	5V	6V	7.5V	-	1500W	DO-201AD	-55°C ~ 150°C	Obsolete	RoHS non-compliant
ICTE5.0-E3/54	Vishay General Semiconductor	5V	6V	7.5V	160A	1500W	DO-201AA, DO-27	-55°C ~ 175°C	Active	ROHS3 Compliant
ICTE5.0HE3/54	Vishay General Semiconductor	5V	6V	7.5V	160A	1500W	DO-201AA, DO-27	-55°C ~ 175°C	Active	ROHS3 Compliant
1N5908	STMicroelectronics	5V	6V	8.5V	120A	1500W	DO-201AD	-55°C ~ 175°C	Active	ROHS3 Compliant
1N5907	Microchip Technology	5V	6V	8.5V	120A	1500W	DO-13	-65°C ~ 175°C	Active	RoHS non-compliant
1N5907E3	Microchip Technology	5V	6V	8.5V	60A	1500W	DO-202AA, DO-13	-65°C ~ 175°C	Active	ROHS3 Compliant
1.5KE6.8A	Taiwan Semiconductor Corporation	5.8V	6.45V	10.5V	150A	1500W	DO-201AA, DO-27	-55°C ~ 175°C	Active	ROHS3 Compliant
P5KE5.0A-AP	Micro Commercial Co	5V	6.4V	9.2V	54.3A	500W	DO-204AC, DO-15	-65°C ~ 175°C	Active	Not specified
3KP5.0A-TP	Micro Commercial Co	5V	6.4V	9.2V	326.1A	3000W	R-6	-55°C ~ 175°C	Active	Not specified
5KP5.0A-G	Comchip Technology	5V	6.4V	9.2V	543.48A	5000W	R-6	-55°C ~ 150°C	Active	ROHS3 Compliant
5KP5.0A-TP	Micro Commercial Co	5V	6.4V	9.2V	-	5000W	R-6	-55°C ~ 175°C	Active	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance):

ICTE5.0-E3/54 and ICTE5.0HE3/54 (Vishay General Semiconductor) are the primary direct substitutes. Both maintain the 5V reverse standoff, 6V breakdown minimum, and 7.5V clamping voltage with 1500W peak pulse power. Both are ROHS3 compliant and active products with extended operating temperature ranges (-55°C to 175°C). ICTE5.0HE3/54 carries AEC-Q101 automotive qualification. Package compatibility is confirmed via DO-201AA and DO-27 equivalence to the original DO-201AD.

For 1500W Applications with Elevated Clamping Voltage:

1N5908 (STMicroelectronics) provides 1500W power handling with an 8.5V clamping voltage and maintains DO-201AD package compatibility. This part is ROHS3 compliant and active. 1N5907 and 1N5907E3 (Microchip Technology) offer similar electrical characteristics but use DO-13 packaging, requiring PCB layout modification. 1N5907E3 is ROHS3 compliant; 1N5907 is not.

1.5KE6.8A (Taiwan Semiconductor Corporation) provides 1500W power with a 10.5V clamping voltage, representing a higher voltage alternative suitable only where circuit design accommodates increased clamping thresholds. This part is ROHS3 compliant and active.

For Higher Power Applications:

3KP5.0A-TP and 5KP5.0A-G / 5KP5.0A-TP (Micro Commercial Co and Comchip Technology) offer 3kW and 5kW power ratings respectively with 9.2V clamping voltage. These are suitable only where the application requires elevated power dissipation capacity and the circuit design permits higher clamping voltages. Package changes to R-6 require PCB redesign. 5KP5.0A-G is ROHS3 compliant; 3KP5.0A-TP compliance status is not specified.

Compliance Considerations:

For applications requiring RoHS3 compliance, ICTE5.0-E3/54, ICTE5.0HE3/54, 1N5908, 1N5907E3, 1.5KE6.8A, 5KP5.0A-G, and 5KP5.0A-TP are compliant. The original MPTE-5 is RoHS non-compliant.

Frequently Asked Questions (FAQ)

Q: Can ICTE5.0-E3/54 be used as a direct drop-in replacement for MPTE-5?

A: Yes. ICTE5.0-E3/54 matches the critical electrical parameters: 5V reverse standoff, 6V breakdown minimum, and 7.5V clamping voltage at 1500W peak pulse power. Package compatibility is confirmed through DO-201AA and DO-27 equivalence to DO-201AD. No circuit redesign is required.

Q: What is the difference between ICTE5.0-E3/54 and ICTE5.0HE3/54?

A: Both parts are electrically identical with matching voltage and power ratings. ICTE5.0HE3/54 carries AEC-Q101 automotive qualification, making it suitable for automotive applications. Selection depends on application requirements.

Q: Why do some substitutes have higher clamping voltages (8.5V, 10.5V)?

A: Higher clamping voltages indicate the part will allow slightly higher transient voltage peaks before clamping occurs. These parts remain functionally equivalent for general-purpose transient suppression but are suitable only where the circuit design tolerates the elevated clamping threshold.

Q: Can I use 1N5907 instead of 1N5908?

A: Both parts have identical electrical characteristics (5V standoff, 6V breakdown, 8.5V clamp, 1500W power). However, 1N5907 uses DO-13 packaging while 1N5908 uses DO-201AD. If the PCB is designed for DO-201AD, 1N5908 is the appropriate choice. 1N5907 requires PCB layout modification.

Q: Are the higher power alternatives (3kW, 5kW) suitable for all applications?

A: No. Higher power alternatives are suitable only where the application requires increased power dissipation capacity and the circuit design permits higher clamping voltages (9.2V). These parts also require different package footprints (R-6), necessitating PCB redesign. Use only if application requirements explicitly demand elevated power handling.

Q: What is the operating temperature range difference between MPTE-5 and its substitutes?

A: MPTE-5 operates from -55°C to 150°C. Most active substitutes extend the upper limit to 175°C, providing improved thermal performance. This is a beneficial characteristic for applications requiring extended temperature operation.

Q: Is RoHS3 compliance mandatory for my application?

A: RoHS3 compliance is mandatory for products sold in the European Union and many other regulated markets. If your application requires RoHS3 compliance, select from: ICTE5.0-E3/54, ICTE5.0HE3/54, 1N5908, 1N5907E3, 1.5KE6.8A, 5KP5.0A-G, or 5KP5.0A-TP. The original MPTE-5 is not compliant.

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