MPTE-5RL4G Equivalent & Substitute Parts

Part Overview

The MPTE-5RL4G is a 5V Transient Voltage Suppressor (TVS) diode manufactured by onsemi, designed for general-purpose transient protection applications. This axial through-hole component features a 9.4V maximum clamping voltage and 160A peak pulse current capability. The part is currently obsolete, making equivalent substitutes necessary for new designs and ongoing production support. Substitute parts must maintain compatibility with the DO-201AD axial package and preserve the core electrical characteristics required for transient voltage suppression in the 5V protection class.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	5	V
Voltage - Breakdown (Min)	6	V
Voltage - Clamping (Max) @ Ipp	9.4	V
Current - Peak Pulse (8/20µs)	160	A
Power - Peak Pulse	1500	W
Operating Temperature Range	-65 to 175	°C
Mounting Type	Through Hole	—
Package / Case	DO-201AD, Axial	—
Type	Zener	—
Unidirectional Channels	1	—

Substitute Part Grouping Explanation

Substitution eligibility for the MPTE-5RL4G is determined by the following criteria:

Primary Matching Parameters:

Voltage - Reverse Standoff: 5V (exact match required)
Voltage - Breakdown (Min): 6V (exact match required)
Type: Zener, Unidirectional (exact match required)
Mounting Type: Through Hole (exact match required)
Unidirectional Channels: 1 (exact match required)

Secondary Compatibility Parameters:

Voltage - Clamping (Max) @ Ipp: 7.5V to 9.4V (acceptable range for transient suppression)
Current - Peak Pulse: 54.3A minimum (must support transient events)
Power - Peak Pulse: 500W minimum (must handle energy dissipation)
Operating Temperature: Must support -55°C to 175°C minimum range
Package compatibility: DO-201AD, DO-201AA, DO-27, or DO-204AC axial packages

Substitute parts are grouped into two categories based on electrical performance tier and package form factor. Category A parts maintain the 160A peak pulse current specification with 1500W power rating. Category B parts operate at reduced current and power levels (54.3A to 55.4A, 500W) but remain functionally equivalent for lower-energy transient suppression applications.

Parameter Comparison

Part Number	Manufacturer	Voltage Standoff (V)	Voltage Breakdown Min (V)	Voltage Clamp Max (V)	Peak Pulse Current (A)	Peak Power (W)	Temp Range (°C)	Package	Status
MPTE-5RL4G	onsemi	5	6	9.4	160	1500	-65 to 175	DO-201AD	Obsolete
1N5908	STMicroelectronics	5	6	8.5	120	1500	-55 to 175	DO-201AD	Active
5KP5.0A-G	Comchip Technology	5	6.4	9.2	543.48	5000	-55 to 150	R-6	Active
ICTE5.0HE3/54	Vishay	5	6	7.5	160	1500	-55 to 175	DO-201AA	Active
ICTE5.0-E3/54	Vishay	5	6	7.5	160	1500	-55 to 175	DO-201AA	Active
P5KE5.0A-TP	Micro Commercial Co	5	6.4	9.2	54.3	500	-65 to 175	DO-204AC	Active
P5KE5.0A-AP	Micro Commercial Co	5	6.4	9.2	54.3	500	-65 to 175	DO-204AC	Active
P5KE5.0A-BP	Micro Commercial Co	5	6.4	9.2	54.3	500	-65 to 175	DO-204AC	Active
SA5.0A-AP	Micro Commercial Co	5	6.4	9.2	55.4	500	-55 to 175	DO-204AC	Active
SA5.0A-BP	Micro Commercial Co	5	6.4	9.2	55.4	500	-55 to 175	DO-204AC	Active
SAC5.0-AP	Micro Commercial Co	5	7.6	10	44	500	-55 to 175	DO-204AC	Active

Engineering Selection Recommendations

High-Performance Equivalents (160A Peak Pulse, 1500W):

The ICTE5.0HE3/54 and ICTE5.0-E3/54 from Vishay are direct functional equivalents with identical peak pulse current (160A) and power dissipation (1500W) specifications. The ICTE5.0HE3/54 carries AEC-Q101 automotive qualification, making it suitable for automotive and mission-critical applications. Both parts are active products with ROHS3 compliance and unlimited moisture sensitivity rating. Package compatibility requires verification: these parts use DO-201AA/DO-27 packages, which are mechanically similar to DO-201AD but may require PCB footprint adjustment.

The 1N5908 from STMicroelectronics maintains 1500W peak power and offers active product status with ROHS3 compliance. Peak pulse current is reduced to 120A, and the operating temperature minimum is -55°C (versus -65°C for MPTE-5RL4G). This part is suitable for applications where the lower current rating is acceptable.

Reduced-Performance Equivalents (54.3A to 55.4A Peak Pulse, 500W):

The P5KE5.0A series (P5KE5.0A-TP, P5KE5.0A-AP, P5KE5.0A-BP) and SA5.0A series (SA5.0A-AP, SA5.0A-BP) from Micro Commercial Co provide active alternatives with significantly reduced peak pulse current and power ratings. These parts are suitable only for low-energy transient suppression applications. All variants maintain the 5V standoff voltage and support the full -65°C to 175°C temperature range (SA5.0A series: -55°C to 175°C). Package form is DO-204AC (DO-15), requiring PCB footprint modification.

Higher-Performance Alternative:

The 5KP5.0A-G from Comchip Technology exceeds the original specification with 543.48A peak pulse current and 5000W peak power. This part is suitable for high-energy transient suppression but operates at a reduced upper temperature limit (-55°C to 150°C). The R-6 package requires footprint verification.

Compliance and Regulatory Status:

All active substitute parts carry ROHS3 compliance and REACH Unaffected status, matching the regulatory profile of the obsolete MPTE-5RL4G. The ICTE5.0HE3/54 provides additional AEC-Q101 automotive qualification for regulated applications.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a different peak pulse current rating?

A: Yes, if the application permits. The MPTE-5RL4G specifies 160A peak pulse current. Substitutes with lower ratings (54.3A to 120A) are acceptable for low-energy transient events. The 5KP5.0A-G with 543.48A exceeds the original specification and is suitable for high-energy applications. Verify that the substitute's current rating meets your circuit's transient energy requirements.

Q: Are package changes acceptable?

A: Package compatibility depends on your PCB design. The MPTE-5RL4G uses DO-201AD axial package. Substitutes using DO-201AA, DO-27, or DO-204AC packages are mechanically similar but may require footprint adjustment. Verify lead spacing and hole diameter compatibility before assembly.

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

A: Both parts are electrically identical with 160A peak pulse current and 1500W power rating. The ICTE5.0HE3/54 carries AEC-Q101 automotive qualification; the ICTE5.0-E3/54 does not. Select the automotive-qualified variant for regulated or mission-critical applications.

Q: Why do some substitutes have higher voltage breakdown minimums (6.4V vs. 6V)?

A: Voltage breakdown specifications reflect manufacturing tolerances. A 6.4V minimum (versus 6V) indicates a tighter tolerance band and may result in slightly higher clamping voltage under transient conditions. This difference is within acceptable limits for 5V protection class applications but should be verified against your circuit's maximum allowable clamping voltage.

Q: Can I use the SAC5.0-AP as a substitute?

A: The SAC5.0-AP has a 7.6V minimum breakdown voltage, which exceeds the 6V specification of the MPTE-5RL4G. This part is not recommended as a direct substitute because it operates outside the specified voltage class. Use only if your application permits higher breakdown voltage thresholds.

Q: What is the impact of the reduced operating temperature range in some substitutes?

A: The MPTE-5RL4G operates from -65°C to 175°C. Some substitutes (1N5908, ICTE5.0 series, SA5.0A series) have a -55°C minimum. If your application requires operation below -55°C, verify that the substitute meets your temperature requirements or select an alternative with extended low-temperature rating.

Q: Are all active substitutes ROHS3 compliant?

A: Yes. All active substitute parts listed carry ROHS3 compliance and REACH Unaffected status, matching the regulatory profile required for modern electronics manufacturing.

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