SA8.0C Transient Voltage Suppressor - Equivalent & Substitute Parts

Part Overview

The SA8.0C is a bidirectional Zener transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. Housed in a DO-204AC (DO-15) axial through-hole package, this component provides 8V reverse standoff voltage with 14.28V maximum clamping voltage and 37.5A peak pulse current capability. The SA8.0C is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value	Unit
Reverse Standoff Voltage (Typ)	8	V
Breakdown Voltage (Min)	8.42	V
Clamping Voltage (Max) @ Ipp	14.28	V
Peak Pulse Current (10/1000µs)	37.5	A
Peak Pulse Power	500	W
Operating Temperature Range	-55 to 175	°C (TJ)
Package Type	DO-204AC (DO-15)	Axial Through-Hole
Bidirectional Channels	1	—
Type	Zener	—

Substitute Part Grouping Explanation

Substitution eligibility for the SA8.0C is determined by strict equivalence across the following critical parameters:

Reverse standoff voltage: 8V (Typ)
Bidirectional channel configuration: 1 channel
Diode type: Zener
Package: DO-204AC (DO-15) axial through-hole
Operating temperature range: -55°C to 175°C (TJ)
Peak pulse power rating: 500W
General-purpose application classification

All substitute parts listed maintain these core electrical and mechanical specifications. Variations in clamping voltage (13.6V vs. 14.28V) and peak pulse current (37.5A to 38A) remain within acceptable tolerance ranges for the SA8.0 series base product designation and do not disqualify substitution in general-purpose protection circuits.

Parameter Comparison

Parameter	SA8.0C (Main)	SA8.0CA	SA8.0CA-AP	SA8.0CA-BP	SA8.0CA-TP
Manufacturer	Littelfuse Inc.	Taiwan Semiconductor Corporation	Micro Commercial Co	Micro Commercial Co	Micro Commercial Co
Product Status	Obsolete	Active	Active	Active	Active
Reverse Standoff Voltage (Typ)	8V	8V	8V	8V	8V
Breakdown Voltage (Min)	8.42V	8.89V	8.89V	8.89V	8.89V
Clamping Voltage (Max) @ Ipp	14.28V	13.6V	13.6V	13.6V	13.6V
Peak Pulse Current (10/1000µs)	37.5A	38A	37.5A	37.5A	37.5A
Peak Pulse Power	500W	500W	500W	500W	500W
Operating Temperature Range	-55 to 175°C (TJ)	-55 to 175°C (TJ)	-55 to 175°C (TJ)	-55 to 175°C (TJ)	-55 to 175°C (TJ)
Package / Case	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial
Bidirectional Channels	1	1	1	1	1
Type	Zener	Zener	Zener	Zener	Zener
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	—	—	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	—	—	—
ECCN	EAR99	EAR99	EAR99	EAR99	EAR99
HTSUS	8541.10.0080	8541.10.0080	8541.10.0080	8541.10.0080	8541.10.0080

Engineering Selection Recommendations

All listed substitute parts maintain active product status, ensuring long-term availability and manufacturing support. SA8.0CA (Taiwan Semiconductor Corporation) carries explicit ROHS3 compliance and MSL-1 moisture sensitivity rating documentation. The three Micro Commercial Co variants (SA8.0CA-AP, SA8.0CA-BP, SA8.0CA-TP) are functionally equivalent with identical electrical specifications and offer bulk packaging options for high-volume applications.

Selection between SA8.0CA and the Micro Commercial Co variants should be based on packaging requirements and supply chain preferences. All substitute parts share EAR99 export classification and 8541.10.0080 HTSUS coding with the original SA8.0C.

Frequently Asked Questions (FAQ)

Q: Can SA8.0CA substitute directly for SA8.0C in existing designs?

A: Yes. Both parts maintain 8V reverse standoff voltage, identical operating temperature range (-55°C to 175°C), 500W peak pulse power rating, and DO-204AC (DO-15) axial through-hole packaging. The 0.68V reduction in maximum clamping voltage (14.28V to 13.6V) and 0.5A increase in peak pulse current (37.5A to 38A) remain within the SA8.0 series design envelope for general-purpose protection applications.

Q: What is the difference between SA8.0CA, SA8.0CA-AP, SA8.0CA-BP, and SA8.0CA-TP?

A: These parts share identical electrical specifications and package type. The suffix designations reflect different packaging formats and supplier configurations. SA8.0CA is supplied in Tape & Reel format by Taiwan Semiconductor Corporation. SA8.0CA-AP, SA8.0CA-BP, and SA8.0CA-TP are supplied in bulk packaging by Micro Commercial Co and represent equivalent alternatives with the same performance characteristics.

Q: Are all substitute parts RoHS compliant?

A: SA8.0CA carries explicit ROHS3 compliance certification. Compliance documentation for Micro Commercial Co variants (SA8.0CA-AP, SA8.0CA-BP, SA8.0CA-TP) is not provided in the available technical data. Verify RoHS compliance status with the supplier for regulatory requirement confirmation.

Q: Can these parts be used interchangeably in PCB designs?

A: Yes. All substitute parts use identical DO-204AC (DO-15) axial through-hole package geometry, enabling direct PCB footprint compatibility without layout modifications.

Q: What is the moisture sensitivity level for substitute parts?

A: SA8.0CA specifies MSL-1 (Unlimited), indicating no moisture sensitivity restrictions. Moisture sensitivity data for Micro Commercial Co variants is not provided in the available technical specifications.

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