SA5.0AG Equivalent & Substitute Parts

Part Overview

The SA5.0AG is a 5V Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose transient protection applications. This axial through-hole component features a 9.2V maximum clamping voltage and 54.3A peak pulse current capability in a DO-204AC (DO-15) package. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and component sourcing.

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
Mounting Type	Through Hole
Package / Case	DO-204AC, DO-15, Axial
Operating Temperature	-55°C ~ 150°C (TJ)
Type	Zener
Unidirectional Channels	1

Substitute Part Grouping Explanation

Substitution eligibility for the SA5.0AG is determined by strict electrical and mechanical parameter matching:

Primary Substitution Criteria:

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

Parts meeting all primary criteria are classified as direct electrical equivalents. Parts with identical electrical specifications but different manufacturers or packaging variants are considered functional substitutes. The BZW06-5V8 exhibits different clamping voltage (13.4V) and peak pulse current (298A at 8/20µs), placing it outside the strict equivalency range despite sharing the same package format.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse	Power - Peak Pulse	Operating Temperature	Package	Product Status
SA5.0AG	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
BZW06-5V8	STMicroelectronics	5.8V	13.4V	298A (8/20µs)	600W	Not specified	DO-15 (DO-204AC)	Active
SAC5.0-AP	Micro Commercial Co	5V	10V	44A	500W	-55°C ~ 175°C	DO-15	Active

Engineering Selection Recommendations

Tier 1 - Direct Electrical Equivalents (Recommended Primary Substitutes):

Parts SA5.0A, SA5.0A-B, SA5.0A-E3/54, and SA5.0AHE3/54 meet all primary electrical specifications with identical 5V reverse standoff and 9.2V clamping voltage. All are active products with ROHS3 compliance and REACH unaffected status. SA5.0A-B is manufacturer-recommended by Littelfuse Inc. and offers extended operating temperature range (-55°C to 175°C). SA5.0AHE3/54 includes AEC-Q101 automotive qualification for applications requiring automotive-grade components.

Tier 2 - Electrical Equivalents with Extended Temperature Range:

P5KE5.0A-AP, P5KE5.0A-BP, and P5KE5.0A-TP from Micro Commercial Co provide identical electrical specifications with extended lower temperature limit (-65°C). These parts are suitable for applications requiring broader temperature performance. All three variants are active products with REACH unaffected status.

Tier 3 - Partial Electrical Match:

SA5.0A-TP (Micro Commercial Co) and SAC5.0-AP (Micro Commercial Co) exhibit minor parameter variations. SA5.0A-TP provides 55.4A peak pulse current versus the specified 54.3A. SAC5.0-AP shows 10V clamping voltage and 44A peak pulse current, representing a reduced performance profile unsuitable for applications requiring full SA5.0AG specifications.

Not Recommended:

BZW06-5V8 (STMicroelectronics) exhibits significantly different electrical characteristics (5.8V reverse standoff, 13.4V clamping voltage, 298A peak pulse current) and does not qualify as a functional substitute despite package compatibility.

Frequently Asked Questions (FAQ)

Q: Can SA5.0A replace SA5.0AG directly?

A: Yes. SA5.0A matches all critical electrical parameters: 5V reverse standoff, 9.2V clamping voltage, and 54.3A minimum peak pulse current. The part is active and widely available from Taiwan Semiconductor Corporation.

Q: What is the difference between SA5.0A-E3/54 and SA5.0AHE3/54?

A: Both parts share identical electrical specifications and package format (DO-204AC). SA5.0AHE3/54 includes AEC-Q101 automotive qualification and is supplied in Tape & Reel packaging, while SA5.0A-E3/54 is supplied in Cut Tape format. Selection depends on packaging requirements and automotive compliance needs.

Q: Why is BZW06-5V8 not recommended as a substitute?

A: BZW06-5V8 exhibits different electrical characteristics: 5.8V reverse standoff (versus 5V), 13.4V clamping voltage (versus 9.2V), and 298A peak pulse current (versus 54.3A). These differences place it outside the allowable substitution parameters for SA5.0AG applications.

Q: Are P5KE5.0A variants suitable for all SA5.0AG applications?

A: P5KE5.0A-AP, P5KE5.0A-BP, and P5KE5.0A-TP provide identical electrical performance with extended lower temperature capability (-65°C versus -55°C). They are suitable for applications within the specified electrical and temperature parameters. Verify packaging requirements, as these parts are supplied in DO-15 format.

Q: What compliance certifications apply to substitute parts?

A: All recommended substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the original SA5.0AG specifications. SA5.0AHE3/54 additionally carries AEC-Q101 automotive qualification for automotive applications.

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

A: SAC5.0-AP is not recommended. While it maintains 5V reverse standoff, it exhibits reduced clamping voltage (10V versus 9.2V) and lower peak pulse current (44A versus 54.3A), making it unsuitable for applications requiring full SA5.0AG performance specifications.

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