SA30CA-T Equivalent & Substitute Parts

Part Overview

The SA30CA-T is a transient voltage suppressor (TVS) diode manufactured by Diodes Incorporated, rated for 30V reverse standoff voltage with 48.4V maximum clamping voltage at peak pulse current. This bidirectional Zener diode is housed in a DO-15 axial package and is designed for general-purpose transient protection applications. The part is currently obsolete, making equivalent substitutes necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	30V
Voltage - Breakdown (Min)	33.3V
Voltage - Clamping (Max) @ Ipp	48.4V
Current - Peak Pulse (10/1000µs)	10.3A
Power - Peak Pulse	500W
Type	Zener
Bidirectional Channels	1
Mounting Type	Through Hole
Package / Case	DO-204AC, DO-15, Axial
Operating Temperature	-65°C ~ 175°C (TJ)

Substitute Part Grouping Explanation

Substitution for the SA30CA-T is determined by strict equivalence across the following critical parameters:

Voltage - Reverse Standoff: 30V (nominal)
Voltage - Breakdown (Min): 33.3V
Current - Peak Pulse (10/1000µs): 10.3A minimum
Power - Peak Pulse: 500W
Type: Zener, Bidirectional
Mounting Type: Through Hole
Package: DO-15 or DO-204AC (DO-15)

Substitute parts are grouped into two categories:

Direct Equivalents (P5KE30CA series): Manufactured by Micro Commercial Co, these parts maintain identical electrical specifications with 48.4V clamping voltage and 10.3A peak pulse current. All variants are active products with bulk packaging.

Manufacturer Recommended Alternatives (SA30CA series): Manufactured by Taiwan Semiconductor Corporation and Micro Commercial Co, these parts share the same 30V standoff and 33.3V breakdown specifications. Variations in clamping voltage (48.4V to 64.3V) and peak pulse current (10.5A to 10.8A) remain within acceptable tolerance ranges for general-purpose transient protection. These parts are active products with improved availability and compliance status.

Parameter Comparison

Part Number	Manufacturer	Product Status	Voltage - Reverse Standoff	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Package	Operating Temperature
SA30CA-T	Diodes Incorporated	Obsolete	30V	33.3V	48.4V	10.3A	500W	DO-15	-65°C ~ 175°C (TJ)
P5KE30CA-AP	Micro Commercial Co	Active	30V	33.3V	48.4V	10.3A	500W	DO-15	-65°C ~ 175°C (TJ)
P5KE30CA-BP	Micro Commercial Co	Active	30V	33.3V	48.4V	10.3A	500W	DO-15	-65°C ~ 175°C (TJ)
P5KE30CA-TP	Micro Commercial Co	Active	30V	33.3V	48.4V	10.3A	500W	DO-15	-65°C ~ 175°C (TJ)
SA30CA	Taiwan Semiconductor Corporation	Active	30V	33.3V	64.3V	10.8A	500W	DO-204AC (DO-15)	-55°C ~ 175°C (TJ)
SA30CA-AP	Micro Commercial Co	Active	30V	33.3V	48.4V	10.5A	500W	DO-15	-55°C ~ 175°C (TJ)
SA30CA-BP	Micro Commercial Co	Active	30V	33.3V	48.4V	10.5A	500W	DO-15	-55°C ~ 175°C (TJ)
SA30CA-TP	Micro Commercial Co	Active	30V	33.3V	48.4V	10.5A	500W	DO-15	-55°C ~ 175°C (TA)

Engineering Selection Recommendations

For Direct Replacement: The P5KE30CA series (P5KE30CA-AP, P5KE30CA-BP, P5KE30CA-TP) provides exact electrical equivalence to the SA30CA-T. All three variants are active products with identical specifications and are suitable for direct substitution in existing designs. Selection among these three parts depends on packaging requirements: bulk, tape & reel, or cut tape.

For Alternative Selection: The SA30CA series offers active product status with improved long-term availability. SA30CA (Taiwan Semiconductor Corporation) provides enhanced performance with 64.3V clamping voltage and 10.8A peak pulse current, suitable for applications requiring additional transient margin. SA30CA-AP, SA30CA-BP, and SA30CA-TP (Micro Commercial Co) maintain closer electrical alignment to the original specification with 48.4V clamping and 10.5A peak pulse current.

All substitute parts are ROHS3 compliant and carry EAR99 ECCN classification, matching the regulatory status of the original part. Moisture sensitivity level is 1 (Unlimited) for all recommended alternatives.

Frequently Asked Questions (FAQ)

Q: Can P5KE30CA series parts directly replace SA30CA-T in existing designs?

A: Yes. The P5KE30CA series maintains identical electrical specifications: 30V reverse standoff, 33.3V breakdown voltage, 48.4V clamping voltage, and 10.3A peak pulse current. All three packaging variants (AP, BP, TP) are electrically equivalent and differ only in delivery format.

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

A: SA30CA is manufactured by Taiwan Semiconductor Corporation and provides 64.3V clamping voltage with 10.8A peak pulse current. SA30CA-TP is manufactured by Micro Commercial Co and provides 48.4V clamping voltage with 10.5A peak pulse current. Both maintain the 30V reverse standoff specification. SA30CA offers higher transient suppression capability, while SA30CA-TP provides closer alignment to the original SA30CA-T specification.

Q: Are all substitute parts available in the same DO-15 package?

A: Yes. All substitute parts are housed in DO-15 axial packages or equivalent DO-204AC (DO-15) designations. Package compatibility is maintained across all recommended alternatives.

Q: What is the operating temperature range difference between SA30CA-T and substitute parts?

A: The original SA30CA-T operates from -65°C to 175°C (TJ). Most substitute parts operate from -55°C to 175°C (TJ), representing a 10°C reduction in minimum operating temperature. For applications requiring -65°C operation, verify specific design requirements against the substitute part's thermal specifications.

Q: Why is SA30CA-T listed as obsolete?

A: The SA30CA-T is obsolete as a Diodes Incorporated product. However, functionally equivalent active alternatives from Micro Commercial Co (P5KE30CA and SA30CA series) and Taiwan Semiconductor Corporation (SA30CA) are available for continued design support and procurement.

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