SA5.0ARLG Equivalent & Substitute Parts

Part Overview

The SA5.0ARLG is a 5V Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in through-hole applications. This part is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. The SA5.0ARLG operates with a 9.2V maximum clamping voltage and 54.3A peak pulse current, housed in a DO-204AC (DO-15) axial package. Active equivalent parts from multiple manufacturers provide direct functional replacement while maintaining electrical performance specifications.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	5V
Voltage - Breakdown (Min)	6.4V
Voltage - Clamping (Max) @ Ipp	9.2V
Current - Peak Pulse (10/1000µs)	54.3A
Power - Peak Pulse	500W
Operating Temperature Range	-55°C ~ 150°C (TJ)
Mounting Type	Through Hole
Package / Case	DO-204AC, DO-15, Axial
Type	Zener
Unidirectional Channels	1

Substitute Part Grouping Explanation

Substitution of the SA5.0ARLG is determined by strict equivalence across the following electrical and mechanical parameters:

Voltage - Reverse Standoff: 5V (required match)
Voltage - Clamping (Max) @ Ipp: 9.2V (required match)
Current - Peak Pulse (10/1000µs): 54.3A minimum (acceptable tolerance range 54.3A to 57A)
Power - Peak Pulse: 500W (required match)
Package / Case: DO-204AC, DO-15, Axial (required match)
Mounting Type: Through Hole (required match)
Type: Zener, Unidirectional (required match)

Substitute parts are grouped into two categories: direct electrical equivalents with identical peak pulse current specifications, and functionally equivalent parts with slightly elevated peak pulse current (55.4A to 57A) that maintain all other critical parameters. All substitute parts listed maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Operating Temperature	Package	Product Status
SA5.0ARLG	Littelfuse Inc.	5V	9.2V	54.3A	500W	-55°C ~ 150°C	DO-204AC (DO-15)	Obsolete
SA5.0A	Taiwan Semiconductor Corporation	5V	9.2V	57A	500W	-55°C ~ 175°C	DO-204AC (DO-15)	Active
SA5.0A-B	Littelfuse Inc.	5V	9.2V	55.4A	500W	-55°C ~ 175°C	DO-204AC (DO-15)	Active
P5KE5.0A-AP	Micro Commercial Co	5V	9.2V	54.3A	500W	-65°C ~ 175°C	DO-15	Active
P5KE5.0A-BP	Micro Commercial Co	5V	9.2V	54.3A	500W	-65°C ~ 175°C	DO-15	Active
P5KE5.0A-TP	Micro Commercial Co	5V	9.2V	54.3A	500W	-65°C ~ 175°C	DO-15	Active
SA5.0A-E3/54	Vishay General Semiconductor - Diodes Division	5V	9.2V	54.3A	500W	-55°C ~ 175°C	DO-204AC (DO-15)	Active
SA5.0A-TP	Micro Commercial Co	5V	9.2V	55.4A	500W	-55°C ~ 175°C	DO-15	Active
SA5.0AHE3/54	Vishay General Semiconductor - Diodes Division	5V	9.2V	54.3A	500W	-55°C ~ 175°C	DO-204AC (DO-15)	Active

Engineering Selection Recommendations

All listed substitute parts maintain electrical equivalence to the SA5.0ARLG across critical voltage and power parameters. Selection among active alternatives depends on specific application requirements:

Direct Electrical Match (54.3A Peak Pulse Current): P5KE5.0A-AP, P5KE5.0A-BP, P5KE5.0A-TP, SA5.0A-E3/54, and SA5.0AHE3/54 provide identical peak pulse current specifications. The P5KE series from Micro Commercial Co extends the operating temperature range to -65°C, suitable for extended low-temperature applications. SA5.0A-E3/54 and SA5.0AHE3/54 from Vishay are available in Cut Tape and Tape & Reel packaging respectively, with SA5.0AHE3/54 qualified to AEC-Q101 automotive standards.

Elevated Peak Pulse Current (55.4A to 57A): SA5.0A from Taiwan Semiconductor Corporation and SA5.0A-B from Littelfuse Inc. provide slightly higher peak pulse current while maintaining all other specifications. SA5.0A-B is the manufacturer-recommended active replacement from Littelfuse, the original SA5.0ARLG manufacturer. SA5.0A-TP from Micro Commercial Co offers 55.4A peak pulse current in Cut Tape packaging.

All substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's environmental compliance profile.

Frequently Asked Questions (FAQ)

Q: Can I use SA5.0A as a direct replacement for SA5.0ARLG?

A: Yes. SA5.0A maintains all critical electrical parameters: 5V reverse standoff voltage, 9.2V maximum clamping voltage, and 500W peak pulse power. The 57A peak pulse current exceeds the original 54.3A specification, providing additional margin. Operating temperature range extends to 175°C compared to the original 150°C. Both use identical DO-204AC (DO-15) axial packaging.

Q: What is the difference between P5KE5.0A-AP, P5KE5.0A-BP, and P5KE5.0A-TP?

A: These three Micro Commercial Co parts are electrically identical, all providing 54.3A peak pulse current and 9.2V clamping voltage. The suffix designates packaging: -AP indicates Bulk packaging, -BP indicates Bulk packaging, and -TP indicates Bulk packaging. All three operate across -65°C to 175°C temperature range, extending the low-temperature specification beyond the original part.

Q: Is SA5.0AHE3/54 suitable for automotive applications?

A: SA5.0AHE3/54 from Vishay carries AEC-Q101 automotive qualification and is available in Tape & Reel packaging. It maintains identical electrical specifications to the SA5.0ARLG (54.3A peak pulse, 9.2V clamping) and operates across -55°C to 175°C. This part is appropriate for automotive-grade designs requiring qualified components.

Q: What packaging options are available among substitute parts?

A: Substitute parts are available in three packaging formats: DO-204AC (DO-15) Axial for through-hole insertion, Cut Tape (CT) for automated assembly, and Tape & Reel (TR) for high-volume production. SA5.0A-E3/54 and SA5.0AHE3/54 maintain the original axial package format. P5KE series parts use DO-15 axial configuration. Verify packaging compatibility with your assembly process before selection.

Q: Why does SA5.0A-B show a higher operating temperature than the original SA5.0ARLG?

A: SA5.0A-B extends the maximum junction temperature rating to 175°C compared to the original 150°C. This represents an improved thermal specification from the manufacturer and does not affect functional equivalence. The part remains suitable for applications designed for the original 150°C maximum.

Q: Are all substitute parts ROHS3 compliant?

A: All listed substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the environmental compliance profile of the original SA5.0ARLG. Verify specific compliance documentation with your supplier for regulatory documentation requirements.

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