SA10C Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts

Part Overview

The SA10C is a through-hole Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., rated for 10V reverse standoff with 17.85V maximum clamping voltage at peak pulse current. This component is classified as obsolete, necessitating identification of active equivalent and substitute parts that maintain electrical and mechanical compatibility for general-purpose transient protection applications. Substitute parts must match the core electrical specifications: 10V standoff voltage, 30A peak pulse current capability, 500W peak pulse power rating, and DO-204AC (DO-15) through-hole axial package format.

Key Parameters

Parameter	SA10C Value	Unit
Voltage - Reverse Standoff (Typ)	10V	V
Voltage - Breakdown (Min)	10.53V	V
Voltage - Clamping (Max) @ Ipp	17.85V	V
Current - Peak Pulse (10/1000µs)	30A	A
Power - Peak Pulse	500W	W
Operating Temperature Range	-55°C to 175°C	°C (TJ)
Mounting Type	Through Hole	—
Package / Case	DO-204AC (DO-15)	—
Type	Zener	—
Bidirectional Channels	1	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the SA10C are grouped based on strict electrical parameter alignment within acceptable tolerances for TVS diode applications. The primary substitution criteria are:

Core Electrical Parameters (Must Match):

Reverse standoff voltage: 10V nominal
Peak pulse current capability: 30A minimum
Peak pulse power rating: 500W minimum
Clamping voltage range: 16.7V to 17.85V maximum
Package format: DO-204AC or DO-15 through-hole axial

Acceptable Variations:

Breakdown voltage (Min): 10.53V to 11.4V
Clamping voltage (Max): 16.7V to 17.85V (within transient suppression tolerance)
Peak pulse current: 29.4A to 36A (maintains protection margin)
Operating temperature: -55°C to -65°C minimum; 175°C maximum

Parts meeting these criteria are electrically interchangeable for general-purpose transient protection circuits. Packaging variants (Bulk, Tape & Reel, Cut Tape) do not affect electrical performance and represent procurement options only.

Parameter Comparison

Part Number	Manufacturer	Voltage - Standoff (Typ)	Voltage - Breakdown (Min)	Voltage - Clamping (Max)	Current - Peak Pulse	Power - Peak Pulse	Operating Temp	Package	Product Status
SA10C	Littelfuse Inc.	10V	10.53V	17.85V	30A	500W	-55°C to 175°C	DO-204AC	Obsolete
SA10CA	Taiwan Semiconductor Corporation	10V	11.1V	17V	30A	500W	-55°C to 175°C	DO-204AC	Active
SA10CA-B	Littelfuse Inc.	10V	11.1V	17V	30A	500W	-55°C to 175°C	DO-204AC	Active
SA10CA-AP	Micro Commercial Co	10V	11.1V	17V	30A	500W	-55°C to 175°C	DO-15	Active
SA10CA-BP	Micro Commercial Co	10V	11.1V	17V	30A	500W	-55°C to 175°C	DO-15	Active
SA10CA-TP	Micro Commercial Co	10V	11.1V	17V	30A	500W	-55°C to 175°C	DO-15	Active
P5KE10CA-AP	Micro Commercial Co	10V	11.1V	17V	29.4A	500W	-65°C to 175°C	DO-15	Active
P5KE10CA-BP	Micro Commercial Co	10V	11.1V	17V	29.4A	500W	-65°C to 175°C	DO-15	Active
P5KE10CA-TP	Micro Commercial Co	10V	11.1V	17V	29.4A	500W	-65°C to 175°C	DO-15	Active
P6KE12CA	Taiwan Semiconductor Corporation	10.2V	11.4V	16.7V	36A	600W	Not specified	DO-15	Active

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

SA10CA, SA10CA-B, SA10CA-AP, SA10CA-BP, and SA10CA-TP are direct electrical equivalents to the SA10C. All maintain identical 10V standoff voltage, 30A peak pulse current, and 500W power rating. These parts are active products with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Selection among these variants depends on packaging requirements: Tape & Reel for automated assembly, Bulk for manual placement, or Cut Tape for mixed procurement.

Secondary Substitutes (Extended Operating Range):

P5KE10CA-AP, P5KE10CA-BP, and P5KE10CA-TP provide equivalent electrical performance with extended minimum operating temperature (-65°C versus -55°C). Peak pulse current is specified at 29.4A, which remains within acceptable protection margins for 10V standoff applications. These parts are suitable for applications requiring enhanced low-temperature performance.

Alternative Substitute (Higher Performance Margin):

P6KE12CA offers increased peak pulse current (36A) and power rating (600W) with slightly elevated standoff voltage (10.2V) and lower clamping voltage (16.7V). This part provides enhanced transient suppression capability and is recommended only when circuit design permits the 0.2V standoff increase and 1.15V clamping reduction. All substitute parts maintain DO-15 through-hole axial package compatibility and ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can SA10CA replace SA10C directly in existing designs?

A: Yes. SA10CA maintains identical electrical specifications: 10V standoff voltage, 30A peak pulse current, 500W power rating, and DO-204AC package format. The part is active and ROHS3 compliant, making it a direct replacement.

Q: What is the difference between SA10CA-AP, SA10CA-BP, and SA10CA-TP?

A: These part numbers represent packaging variants only. SA10CA-AP and SA10CA-BP are supplied in Bulk packaging for manual component handling. SA10CA-TP is supplied in Tape & Reel format for automated assembly equipment. Electrical specifications are identical across all three variants.

Q: Can P5KE10CA series parts substitute for SA10C?

A: Yes, with the following considerations: P5KE10CA-AP, P5KE10CA-BP, and P5KE10CA-TP maintain 10V standoff voltage, 30A peak pulse current (specified as 29.4A), and 500W power rating. These parts offer extended low-temperature operation (-65°C minimum) and are electrically compatible. Peak pulse current specification of 29.4A remains within acceptable protection margins.

Q: Is P6KE12CA compatible with SA10C?

A: P6KE12CA is electrically compatible with minor parameter variations: standoff voltage increases to 10.2V, clamping voltage decreases to 16.7V, and peak pulse current increases to 36A with 600W power rating. This part is suitable only when circuit design permits the 0.2V standoff increase and 1.15V clamping reduction. Verify circuit tolerance before selection.

Q: What packaging options are available for SA10C substitutes?

A: Substitute parts are available in three packaging formats: Bulk (loose components for manual placement), Tape & Reel (automated assembly), and Cut Tape (mixed procurement). All maintain DO-15 through-hole axial package format compatible with SA10C PCB footprints. Packaging selection does not affect electrical performance.

Q: Are all substitute parts ROHS3 compliant?

A: SA10CA, SA10CA-B, SA10CA-AP, SA10CA-BP, SA10CA-TP, and P6KE12CA are confirmed ROHS3 compliant. P5KE10CA series parts (P5KE10CA-AP, P5KE10CA-BP, P5KE10CA-TP) do not specify RoHS status in provided documentation. Verify RoHS compliance requirements with supplier before procurement.

Q: What is the inventory status of substitute parts?

A: All substitute parts are active products with confirmed stock availability: SA10CA (1340 pcs), SA10CA-B (718 pcs), P5KE10CA-AP (832 pcs), P5KE10CA-BP (910 pcs), P5KE10CA-TP (1061 pcs), SA10CA-AP (701 pcs), SA10CA-BP (669 pcs), SA10CA-TP (942 pcs), and P6KE12CA (25610 pcs). Inventory levels support immediate procurement for production requirements.

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