SA7.0C-E3/73 Equivalent & Substitute Parts

Part Overview

The SA7.0C-E3/73 is a Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division, part of the TransZorb® series. This through-hole component is designed for general-purpose transient voltage protection applications. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing system maintenance and new design implementations. Substitute parts must maintain compatibility across key electrical parameters including reverse standoff voltage, clamping voltage, peak pulse current, and power dissipation ratings, while preserving the through-hole DO-204AC (DO-15) axial package format.

Key Parameters

Parameter	SA7.0C-E3/73
Voltage - Reverse Standoff (Typ)	7V
Voltage - Breakdown (Min)	7.78V
Voltage - Clamping (Max) @ Ipp	13.3V
Current - Peak Pulse (10/1000µs)	37.6A
Power - Peak Pulse	500W
Operating Temperature	-55°C ~ 175°C (TJ)
Mounting Type	Through Hole
Package / Case	DO-204AC, DO-15, Axial
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the SA7.0C-E3/73 is determined by the following critical parameters:

Electrical Compatibility Criteria:

Reverse standoff voltage within 7V nominal range
Breakdown voltage minimum at or above 7.78V
Clamping voltage capability sufficient for circuit protection (13.3V reference)
Peak pulse current rating of 37.6A or higher
Power dissipation rating of 500W or higher

Mechanical Compatibility Criteria:

Through-hole mounting type
DO-204AC (DO-15) axial package format

Compliance Requirements:

ROHS3 compliance
Moisture Sensitivity Level 1 (Unlimited)

The substitute parts SA7.0CA-E3/73, P6KE8.2CA, and P6KE8V2CA meet these criteria while offering active product status and improved availability.

Parameter Comparison

Parameter	SA7.0C-E3/73	SA7.0CA-E3/73	P6KE8.2CA	P6KE8V2CA
Manufacturer	Vishay	Vishay	Taiwan Semiconductor	Taiwan Semiconductor
Voltage - Reverse Standoff (Typ)	7V	7V	7.02V	7.02V
Voltage - Breakdown (Min)	7.78V	7.78V	7.79V	7.79V
Voltage - Clamping (Max) @ Ipp	13.3V	12V	12.1V	12.1V
Current - Peak Pulse (10/1000µs)	37.6A	41.7A	52A	50A
Power - Peak Pulse	500W	500W	600W	600W
Operating Temperature	-55°C ~ 175°C	-55°C ~ 175°C	-55°C ~ 175°C	Not specified
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	DO-204AC, DO-15	DO-204AC, DO-15	DO-204AC, DO-15	DO-15
Product Status	Obsolete	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

SA7.0CA-E3/73 is the direct Vishay equivalent with identical electrical specifications and active product status. This part maintains the same reverse standoff voltage (7V), breakdown voltage (7.78V), and operating temperature range (-55°C ~ 175°C). The clamping voltage is reduced to 12V, and peak pulse current is increased to 41.7A, both favorable for circuit protection. This part is recommended as the primary substitute due to manufacturer continuity and ROHS3 compliance.

P6KE8.2CA and P6KE8V2CA are Taiwan Semiconductor alternatives that meet or exceed the electrical requirements of the original part. Both parts provide higher power dissipation (600W vs. 500W) and increased peak pulse current capability (52A and 50A respectively), with clamping voltages of 12.1V. These parts are suitable for applications requiring enhanced transient protection margins. Both are ROHS3 compliant and carry active product status with higher inventory availability.

Selection should prioritize active product status and ROHS3 compliance. All substitute parts maintain through-hole mounting and DO-15 package compatibility with the original design.

Frequently Asked Questions (FAQ)

Q: Can SA7.0CA-E3/73 directly replace SA7.0C-E3/73 in existing designs?

A: Yes. SA7.0CA-E3/73 maintains identical reverse standoff voltage (7V), breakdown voltage (7.78V), and operating temperature range. The clamping voltage is reduced from 13.3V to 12V, and peak pulse current is increased from 37.6A to 41.7A. Both changes are favorable for transient protection. The part uses the same DO-204AC (DO-15) axial package and is ROHS3 compliant.

Q: What is the difference between the Vishay and Taiwan Semiconductor options?

A: SA7.0CA-E3/73 is a direct Vishay equivalent maintaining the same manufacturer lineage. P6KE8.2CA and P6KE8V2CA are Taiwan Semiconductor alternatives with higher power dissipation (600W vs. 500W) and increased peak pulse current (52A and 50A). All three parts meet the reverse standoff voltage requirement of 7V and provide clamping voltages between 12V and 12.1V, suitable for the original 13.3V specification.

Q: Are all substitute parts available in the same package format?

A: SA7.0CA-E3/73 and P6KE8.2CA are available in DO-204AC (DO-15) axial packages. P6KE8V2CA is specified as DO-15 axial package. All three maintain through-hole mounting compatibility with the original SA7.0C-E3/73 design.

Q: What compliance certifications apply to these substitute parts?

A: All substitute parts (SA7.0CA-E3/73, P6KE8.2CA, P6KE8V2CA) are ROHS3 compliant and carry Moisture Sensitivity Level 1 (Unlimited). All parts are REACH unaffected and classified under ECCN EAR99.

Q: Which substitute part offers the best availability?

A: P6KE8.2CA offers the highest inventory availability at 30,400 pieces. SA7.0CA-E3/73 has 32,100 pieces in stock. P6KE8V2CA has 998 pieces available. All three parts carry active product status.

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