SA30C-E3/73 Equivalent & Substitute Parts

Part Overview

The SA30C-E3/73 is a 30V Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division, housed in a DO-204AC (DO-15) axial through-hole package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The device provides transient voltage suppression for general-purpose applications with a peak pulse power rating of 500W and bidirectional protection capability.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	30	V
Voltage - Breakdown (Min)	33.3	V
Voltage - Clamping (Max) @ Ipp	53.5	V
Current - Peak Pulse (10/1000µs)	9.3	A
Power - Peak Pulse	500	W
Operating Temperature Range	-55 to 175	°C
Mounting Type	Through Hole	-
Package / Case	DO-204AC (DO-15)	-
Type	Zener	-
Bidirectional Channels	1	-

Substitute Part Grouping Explanation

Substitution eligibility for the SA30C-E3/73 is determined by the following critical parameters:

Voltage - Reverse Standoff (Typ): 30V
Voltage - Breakdown (Min): 33.3V
Package / Case: DO-204AC (DO-15) axial through-hole
Type: Zener diode, bidirectional
Operating Temperature Range: -55°C to 175°C
Power - Peak Pulse: 500W

Substitute parts must maintain identical reverse standoff voltage, breakdown voltage minimum, package configuration, and thermal operating range. Variations in clamping voltage and peak pulse current are permissible within the same functional class, provided the substitute meets or exceeds the original specifications for transient suppression performance.

Parameter Comparison

Parameter	SA30C-E3/73 (Main)	SA30CA	SA30CA-AP	SA30CA-BP	SA30CA-TP
Manufacturer	Vishay General Semiconductor	Taiwan Semiconductor Corporation	Micro Commercial Co	Micro Commercial Co	Micro Commercial Co
Voltage - Reverse Standoff (Typ)	30V	30V	30V	30V	30V
Voltage - Breakdown (Min)	33.3V	33.3V	33.3V	33.3V	33.3V
Voltage - Clamping (Max) @ Ipp	53.5V	64.3V	48.4V	48.4V	48.4V
Current - Peak Pulse (10/1000µs)	9.3A	10.8A	10.5A	10.5A	10.5A
Power - Peak Pulse	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 (TA)
Package / Case	DO-204AC (DO-15)	DO-204AC (DO-15)	DO-15	DO-15	DO-15
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Type	Zener	Zener	Zener	Zener	Zener
Bidirectional Channels	1	1	1	1	1
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Not specified	Not specified	ROHS3 Compliant
Packaging Option	-	Tape & Reel (TR)	Bulk	Bulk	Cut Tape (CT)
Inventory Availability	651 Pcs	1680 Pcs	844 Pcs	904 Pcs	8682 Pcs

Engineering Selection Recommendations

All substitute parts maintain compliance with REACH regulations and EAR99 export classification. Selection among the four substitute options should be based on the following criteria:

SA30CA (Taiwan Semiconductor Corporation): Active product status with ROHS3 compliance and Tape & Reel packaging. Offers the highest peak pulse current (10.8A) and clamping voltage (64.3V), providing enhanced transient suppression margin.

SA30CA-TP (Micro Commercial Co): Active product status with ROHS3 compliance and Cut Tape packaging. Highest inventory availability (8682 Pcs) ensures procurement continuity. Clamping voltage of 48.4V is lower than the original specification but remains within functional parameters.

SA30CA-AP and SA30CA-BP (Micro Commercial Co): Both active products with identical electrical specifications (48.4V clamping, 10.5A peak pulse current) and Bulk packaging. Differ only in inventory levels (844 Pcs and 904 Pcs respectively). RoHS status not specified for these variants.

Frequently Asked Questions (FAQ)

Q: Can SA30CA-TP be used as a direct replacement for SA30C-E3/73?

A: Yes. Both devices share identical reverse standoff voltage (30V), breakdown voltage minimum (33.3V), power rating (500W), operating temperature range, and DO-15 through-hole package configuration. The SA30CA-TP clamping voltage of 48.4V is lower than the original 53.5V, but this represents acceptable variation within the TVS diode functional class for general-purpose applications.

Q: What is the difference between SA30CA-AP, SA30CA-BP, and SA30CA-TP?

A: These three parts are electrically identical (30V standoff, 33.3V breakdown minimum, 48.4V clamping, 10.5A peak pulse current). The differences are packaging format (Bulk, Bulk, and Cut Tape respectively) and inventory availability. Selection depends on procurement requirements and supply chain preferences.

Q: Is SA30CA from Taiwan Semiconductor Corporation compatible with the original Vishay part?

A: Yes. SA30CA maintains all critical electrical parameters (30V standoff, 33.3V breakdown minimum, 500W power rating, -55 to 175°C operating range) and DO-15 package configuration. The higher clamping voltage (64.3V) and peak pulse current (10.8A) provide enhanced performance margins.

Q: Are all substitute parts RoHS3 compliant?

A: SA30CA and SA30CA-TP are explicitly ROHS3 compliant. RoHS status is not specified for SA30CA-AP and SA30CA-BP. Verify compliance requirements with your procurement or quality assurance department before selection.

Q: What is the significance of the different packaging options (Tape & Reel, Bulk, Cut Tape)?

A: Packaging format affects handling, storage, and automated assembly compatibility. Tape & Reel (SA30CA) is optimized for high-volume automated pick-and-place assembly. Cut Tape (SA30CA-TP) suits moderate-volume production. Bulk packaging (SA30CA-AP, SA30CA-BP) is suitable for manual assembly or lower-volume applications. Select based on your manufacturing process requirements.

Q: Why is the original SA30C-E3/73 marked as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. Substitute parts listed are active products from alternative manufacturers that meet or exceed the original electrical and mechanical specifications, ensuring design continuity and procurement availability.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message