SA7V0CA Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts

Part Overview

The SA7V0CA is a 7V Zener transient voltage suppressor diode manufactured by onsemi in DO-15 axial package configuration. This component is classified as obsolete, necessitating identification of active equivalent and substitute parts for new designs and production continuity. The SA7V0CA provides 12V clamping voltage at 41.7A peak pulse current with 500W peak pulse power rating, suitable for general-purpose transient voltage suppression applications.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	7V	V
Voltage - Breakdown (Min)	7.78V	V
Voltage - Clamping (Max) @ Ipp	12V	V
Current - Peak Pulse (10/1000µs)	41.7A	A
Power - Peak Pulse	500W	W
Type	Zener	—
Bidirectional Channels	1	—
Mounting Type	Through Hole	—
Package / Case	DO-204AC, DO-15, Axial	—
Product Status	Obsolete	—

Substitute Part Grouping Explanation

Substitute parts for the SA7V0CA are classified into two categories based on electrical parameter alignment:

Direct Equivalents (Identical Electrical Parameters): Parts meeting all critical electrical specifications: 7V reverse standoff voltage, 7.78V minimum breakdown voltage, 12V maximum clamping voltage at Ipp, and 41.7A peak pulse current. These parts maintain the same functional performance envelope and are interchangeable at the circuit level.

Similar Alternatives (Comparable Electrical Parameters): Parts with slightly elevated voltage ratings (7.02V standoff, 12.1V clamping) and increased current handling (49.6A to 52A peak pulse). These parts operate within the same application class but with enhanced transient suppression capability. Peak pulse power increases to 600W, providing additional margin for transient events.

Key Parameters Determining Substitution:

Reverse standoff voltage tolerance (7V ±tolerance)
Clamping voltage at peak pulse current (12V nominal, 12.1V acceptable)
Peak pulse current rating (41.7A minimum, up to 52A acceptable)
Package compatibility (DO-15 / DO-204AC axial through-hole)
Zener diode type with single bidirectional channel

Parameter Comparison

Part Number	Manufacturer	Vwm (Typ) V	Vbr (Min) V	Vc (Max) @ Ipp V	Ipp A	Ppk W	Package	Status
SA7V0CA	onsemi	7	7.78	12	41.7	500	DO-15	Obsolete
SA7.0CA-E3/54	Vishay	7	7.78	12	41.7	500	DO-204AC	Active
SA7.0CAHE3/54	Vishay	7	7.78	12	41.7	500	DO-204AC	Active
P5KE7.0CA-AP	Micro Commercial Co	7	7.78	12	41.7	500	DO-15	Active
P5KE7.0CA-BP	Micro Commercial Co	7	7.78	12	41.7	500	DO-15	Active
P5KE7.0CA-TP	Micro Commercial Co	7	7.78	12	41.7	500	DO-15	Active
P6KE8.2CA	Taiwan Semiconductor	7.02	7.79	12.1	52	600	DO-15	Active
P6KE8.2CA-E3/73	Vishay	7.02	7.79	12.1	49.6	600	DO-204AC	Active
P6KE8.2CA-TP	Micro Commercial Co	7.02	7.79	12.1	50	600	DO-15	Active
P6KE8.2CAHE3/54	Vishay	7.02	7.79	12.1	49.6	600	DO-204AC	Active
P6KE8.2CAHE3/73	Vishay	7.02	7.79	12.1	49.6	600	DO-204AC	Active

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance):

Select SA7.0CA-E3/54 or SA7.0CAHE3/54 from Vishay General Semiconductor - Diodes Division. Both parts maintain exact electrical equivalence to the SA7V0CA with 7V standoff voltage, 12V clamping voltage, and 41.7A peak pulse current. SA7.0CA-E3/54 is available in Cut Tape packaging with 24,057 units in stock. SA7.0CAHE3/54 is supplied in Tape & Reel with automotive qualification (AEC-Q101) and 801 units in stock. Both are ROHS3 compliant and active products.

Alternatively, select P5KE7.0CA series parts from Micro Commercial Co (P5KE7.0CA-AP, P5KE7.0CA-BP, or P5KE7.0CA-TP). All three variants provide identical electrical specifications with extended operating temperature range (-65°C to 175°C) and higher inventory availability (700 to 1,001 units). These parts are active and suitable for general-purpose applications.

For Enhanced Performance (Higher Current and Power Rating):

Select P6KE8.2CA series parts when circuit design permits slightly elevated clamping voltage (12.1V vs. 12V) and requires increased transient suppression capability. P6KE8.2CA from Taiwan Semiconductor Corporation offers 52A peak pulse current and 600W power rating with 30,400 units in stock. Vishay TransZorb® variants (P6KE8.2CA-E3/73, P6KE8.2CAHE3/54, P6KE8.2CAHE3/73) provide 49.6A to 50A peak pulse current with automotive qualification (AEC-Q101) and ROHS3 compliance. Micro Commercial Co P6KE8.2CA-TP offers 50A peak pulse current in Cut Tape packaging with 4,483 units available.

Compliance and Certification:

All recommended active substitutes maintain REACH Unaffected status and EAR99 export classification. Vishay parts with HE3 suffix designations include automotive-grade qualification (AEC-Q101) suitable for automotive and harsh-environment applications. All parts feature Moisture Sensitivity Level 1 (Unlimited).

Frequently Asked Questions (FAQ)

Q: Can SA7.0CA-E3/54 directly replace SA7V0CA in existing designs?

A: Yes. SA7.0CA-E3/54 provides identical electrical specifications: 7V reverse standoff voltage, 7.78V breakdown voltage, 12V clamping voltage at 41.7A peak pulse current, and 500W peak pulse power. Both use DO-15 axial through-hole packaging. The primary difference is product status (active vs. obsolete) and supplier (Vishay vs. onsemi).

Q: What is the difference between SA7.0CA-E3/54 and SA7.0CAHE3/54?

A: Both parts are electrically identical with matching voltage and current ratings. SA7.0CA-E3/54 is supplied in Cut Tape (CT) packaging with standard industrial temperature range. SA7.0CAHE3/54 is supplied in Tape & Reel (TR) packaging and includes automotive-grade qualification (AEC-Q101) with extended operating temperature range (-55°C to 175°C). Select SA7.0CAHE3/54 for automotive applications or when AEC-Q101 certification is required.

Q: Can P6KE8.2CA series parts substitute for SA7V0CA?

A: P6KE8.2CA series parts are functionally compatible but with enhanced specifications. Reverse standoff voltage increases slightly from 7V to 7.02V, clamping voltage increases from 12V to 12.1V, and peak pulse current increases from 41.7A to 49.6A–52A. Peak pulse power increases to 600W. These parts provide superior transient suppression capability and are suitable when circuit design permits the slightly higher clamping voltage. Verify circuit tolerance for 12.1V clamping voltage before selection.

Q: What packaging options are available?

A: All substitute parts maintain DO-15 axial through-hole package compatibility. Vishay parts are also available in DO-204AC (DO-15) designation. Packaging variants include Cut Tape (CT) for individual component handling, Tape & Reel (TR) for automated assembly, and Bulk for manual assembly. Select based on production volume and assembly process requirements.

Q: Are all substitute parts RoHS compliant?

A: Vishay and Micro Commercial Co parts are ROHS3 compliant. Taiwan Semiconductor Corporation P6KE8.2CA is also ROHS3 compliant. All parts maintain REACH Unaffected status. Verify specific compliance documentation with supplier for regulatory requirements in target markets.

Q: Which substitute offers the best inventory availability?

A: P6KE8.2CA from Taiwan Semiconductor Corporation has the highest inventory with 30,400 units in stock. For direct electrical equivalents, SA7.0CA-E3/54 from Vishay offers 24,057 units. P5KE7.0CA series from Micro Commercial Co provides 700–1,001 units across three packaging variants.

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