ICTE-5RL4G Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts

Part Overview

The ICTE-5RL4G is a 5V unidirectional Zener TVS diode manufactured by onsemi, designed for general-purpose transient voltage suppression in through-hole axial applications. This component features a 9.4V maximum clamping voltage and 160A peak pulse current capability (8/20µs). The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	5V
Voltage - Breakdown (Min)	6V
Voltage - Clamping (Max) @ Ipp	9.4V
Current - Peak Pulse (10/1000µs)	160A (8/20µs)
Power - Peak Pulse	1500W (1.5kW)
Operating Temperature Range	-65°C ~ 175°C (TJ)
Mounting Type	Through Hole
Package / Case	DO-201AD, Axial
Type	Zener, Unidirectional

Substitute Part Grouping Explanation

Substitution for the ICTE-5RL4G is determined by the following critical parameters:

Voltage Rating: Reverse standoff voltage of 5V and breakdown voltage minimum of 6V
Clamping Voltage: Maximum clamping voltage at peak pulse current (Ipp) must remain within acceptable circuit protection limits
Peak Pulse Current: Minimum 160A capability at 8/20µs pulse duration
Power Dissipation: Minimum 1500W peak pulse power rating
Mounting Configuration: Through-hole axial package compatibility
Temperature Range: Operating temperature capability from -65°C to 175°C

Substitute parts are grouped into two categories based on these parameters:

Category A - Direct Electrical Equivalents (Axial DO-201 Package Family) Parts maintaining the same clamping voltage (7.5V–9.4V), peak pulse current (160A), and power rating (1500W) in through-hole axial packages.

Category B - Functional Equivalents (DO-15 Package Alternative) Parts with matching voltage ratings and clamping characteristics but in smaller DO-15 axial packages, with reduced peak pulse current (54.3A–55.4A) and power rating (500W).

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse	Power - Peak Pulse	Operating Temperature	Package / Case	Product Status
ICTE-5RL4G	onsemi	5V	6V	9.4V	160A (8/20µs)	1500W	-65°C ~ 175°C	DO-201AD, Axial	Obsolete
5KP5.0A-G	Comchip Technology	5V	6.4V	9.2V	543.48A	5000W	-55°C ~ 150°C	R-6, Axial	Active
ICTE5.0-E3/54	Vishay General Semiconductor - Diodes Division	5V	6V	7.5V	160A	1500W	-55°C ~ 175°C	DO-201AA, DO-27, Axial	Active
ICTE5.0HE3/54	Vishay General Semiconductor - Diodes Division	5V	6V	7.5V	160A	1500W	-55°C ~ 175°C	DO-201AA, DO-27, Axial	Active
P5KE5.0A-AP	Micro Commercial Co	5V	6.4V	9.2V	54.3A	500W	-65°C ~ 175°C	DO-204AC, DO-15, Axial	Active
P5KE5.0A-BP	Micro Commercial Co	5V	6.4V	9.2V	54.3A	500W	-65°C ~ 175°C	DO-204AC, DO-15, Axial	Active
P5KE5.0A-TP	Micro Commercial Co	5V	6.4V	9.2V	54.3A	500W	-65°C ~ 175°C	DO-204AC, DO-15, Axial	Active
SA5.0A-AP	Micro Commercial Co	5V	6.4V	9.2V	55.4A	500W	-55°C ~ 175°C	DO-204AC, DO-15, Axial	Active
SA5.0A-BP	Micro Commercial Co	5V	6.4V	9.2V	55.4A	500W	-55°C ~ 175°C	DO-204AC, DO-15, Axial	Active
SAC5.0-AP	Micro Commercial Co	5V	7.6V	10V	44A	500W	-55°C ~ 175°C	DO-204AC, DO-15, Axial	Active
SAC5.0-BP	Micro Commercial Co	5V	7.6V	10V	44A	500W	-55°C ~ 175°C	DO-204AC, DO-15, Axial	Active

Engineering Selection Recommendations

Primary Substitutes (Recommended for Direct Replacement)

ICTE5.0-E3/54 and ICTE5.0HE3/54 from Vishay General Semiconductor are the preferred substitutes. Both maintain identical peak pulse current (160A) and power dissipation (1500W) as the original ICTE-5RL4G. The ICTE5.0HE3/54 variant includes AEC-Q101 automotive qualification, providing additional reliability assurance for applications requiring automotive-grade components. Both parts are active products with RoHS3 compliance and operate across the required temperature range.

Secondary Substitutes (Functional Equivalents with Reduced Current Capability)

The P5KE5.0A series (P5KE5.0A-AP, P5KE5.0A-BP, P5KE5.0A-TP) and SA5.0A series (SA5.0A-AP, SA5.0A-BP) from Micro Commercial Co provide equivalent voltage protection in DO-15 packages. These parts are suitable for applications where peak pulse current requirements do not exceed 54.3A–55.4A and power dissipation does not exceed 500W. All variants maintain the 5V reverse standoff voltage and 9.2V clamping voltage. The P5KE5.0A series supports the full temperature range (-65°C ~ 175°C), while SA5.0A variants operate from -55°C ~ 175°C.

Alternative with Modified Clamping Voltage

SAC5.0-AP and SAC5.0-BP offer 10V clamping voltage with 44A peak pulse current. These parts are suitable only for applications where the higher clamping voltage (10V versus 9.2V–9.4V) is acceptable and peak pulse current does not exceed 44A.

Availability and Compliance

All substitute parts listed are active products with current manufacturing status and REACH compliance. Inventory availability ranges from 654 to 1114 pieces across the substitute options.

Frequently Asked Questions (FAQ)

Q: Can ICTE5.0-E3/54 directly replace ICTE-5RL4G in existing designs?

A: Yes. ICTE5.0-E3/54 maintains the same peak pulse current (160A), power rating (1500W), and reverse standoff voltage (5V). The clamping voltage is 7.5V versus 9.4V on the original part, which provides tighter voltage clamping and is suitable for most general-purpose transient suppression applications. Both use through-hole axial packages (DO-201AA/DO-27 versus DO-201AD), which are mechanically compatible on standard PCB layouts.

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

A: Both parts are electrically identical with matching voltage ratings, current capability, and power dissipation. ICTE5.0HE3/54 includes AEC-Q101 automotive qualification, making it suitable for automotive and high-reliability applications. Select ICTE5.0HE3/54 when automotive-grade certification is required.

Q: Can P5KE5.0A series parts replace ICTE-5RL4G?

A: P5KE5.0A series parts are functional equivalents for lower-current applications. They maintain the 5V reverse standoff voltage and 9.2V clamping voltage but provide only 54.3A peak pulse current and 500W power dissipation compared to the original 160A and 1500W. Use P5KE5.0A series only if circuit transient energy is below 500W and peak pulse current does not exceed 54.3A. The DO-15 package is physically smaller than the original DO-201AD axial package and requires PCB layout modification.

Q: Why do some substitutes have different operating temperature ranges?

A: Operating temperature range varies by manufacturer design and qualification level. ICTE-5RL4G operates from -65°C ~ 175°C. ICTE5.0-E3/54 and ICTE5.0HE3/54 operate from -55°C ~ 175°C, which is suitable for most industrial and automotive applications. P5KE5.0A series supports the full -65°C ~ 175°C range. Verify that the selected substitute meets the minimum temperature requirements of your application.

Q: What does "Moisture Sensitivity Level (MSL): 1 (Unlimited)" mean?

A: MSL 1 indicates unlimited shelf life without moisture-related degradation. All listed parts carry MSL 1 rating, meaning they do not require special moisture-control storage or handling procedures.

Q: Are all substitute parts RoHS compliant?

A: ICTE5.0-E3/54 and ICTE5.0HE3/54 are explicitly RoHS3 compliant. P5KE5.0A and SA5.0A series parts do not list RoHS status in the provided specifications. Verify RoHS compliance with the manufacturer if required for your application.

Q: Can SAC5.0 series parts be used as substitutes?

A: SAC5.0-AP and SAC5.0-BP are not recommended as direct substitutes. These parts have a higher clamping voltage (10V versus 9.4V on the original) and significantly lower peak pulse current (44A versus 160A). Use SAC5.0 series only if the application circuit can tolerate 10V clamping voltage and transient energy is below 500W.

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