SA110CA Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts

Part Overview

The SA110CA is a Zener-type transient voltage suppressor diode manufactured by onsemi, designed for general-purpose overvoltage protection in through-hole applications. The device features a 110V reverse standoff voltage with 177V maximum clamping voltage and 2.8A peak pulse current capability in a DO-15 (DO-204AC) axial package. The main part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	110	V
Voltage - Breakdown (Min)	122	V
Voltage - Clamping (Max) @ Ipp	177	V
Current - Peak Pulse (10/1000µs)	2.8	A
Power - Peak Pulse	500	W
Type	Zener	-
Bidirectional Channels	1	-
Mounting Type	Through Hole	-
Package / Case	DO-204AC, DO-15, Axial	-

Substitute Part Grouping Explanation

Substitute parts for the SA110CA are classified into two categories based on electrical and mechanical compatibility:

Direct Equivalents maintain identical electrical specifications (110V standoff, 177V clamping, 2.8A peak pulse current) and package configuration (DO-15/DO-204AC through-hole axial):

SA110CA (Fairchild Semiconductor)
SA110CA-E3/54 (Vishay General Semiconductor - Diodes Division)
SA110CAHE3/54 (Vishay General Semiconductor - Diodes Division, automotive grade)

Similar Substitutes meet the same electrical performance requirements (110V standoff, 177V clamping, 2.8A peak pulse current) with identical package type but may originate from different manufacturers or have different packaging designations:

SA110CA-AP, SA110CA-BP, SA110CA-TP (Micro Commercial Co)
P5KE110CA-AP, P5KE110CA-BP, P5KE110CA-TP (Micro Commercial Co)

All substitute parts share the critical electrical parameters that determine functional equivalence: reverse standoff voltage, breakdown voltage, clamping voltage, and peak pulse current rating. Package type (DO-15/DO-204AC axial through-hole) is identical across all options.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (V)	Voltage - Breakdown (V)	Voltage - Clamping (V)	Current - Peak Pulse (A)	Power - Peak Pulse (W)	Product Status	Package
SA110CA	onsemi	110	122	177	2.8	500	Obsolete	DO-15
SA110CA	Fairchild Semiconductor	110	122	177	2.9	500	Obsolete	DO-204AC
SA110CA-E3/54	Vishay General Semiconductor	110	122	177	2.8	500	Active	DO-204AC
SA110CAHE3/54	Vishay General Semiconductor	110	122	177	2.8	500	Active	DO-204AC
SA110CA-AP	Micro Commercial Co	110	122	177	2.9	500	Active	DO-15
SA110CA-BP	Micro Commercial Co	110	122	177	2.9	500	Active	DO-15
SA110CA-TP	Micro Commercial Co	110	122	177	2.9	500	Active	DO-15
P5KE110CA-AP	Micro Commercial Co	110	122	177	2.8	500	Active	DO-15
P5KE110CA-BP	Micro Commercial Co	110	122	177	2.8	500	Active	DO-15
P5KE110CA-TP	Micro Commercial Co	110	122	177	2.8	500	Active	DO-15

Engineering Selection Recommendations

For Active Product Status Requirements: Vishay General Semiconductor SA110CA-E3/54 and SA110CAHE3/54 are the primary recommendations as active products with full electrical equivalence to the original SA110CA. The SA110CAHE3/54 variant includes automotive-grade qualification (AEC-Q101) for applications requiring automotive compliance.

For General Commercial Applications: Micro Commercial Co variants (SA110CA-AP, SA110CA-BP, SA110CA-TP, P5KE110CA-AP, P5KE110CA-BP, P5KE110CA-TP) provide active product status with identical electrical specifications and through-hole DO-15 packaging. These parts are suitable for standard industrial and consumer applications.

For Obsolete Part Replacement: The Fairchild Semiconductor SA110CA provides direct electrical equivalence but retains obsolete status. This option is applicable only when existing inventory must be matched or when legacy documentation references are required.

All substitute parts maintain RoHS3 compliance, REACH unaffected status, and identical ECCN (EAR99) and HTSUS (8541.10.0080) classifications as the original SA110CA.

Frequently Asked Questions (FAQ)

Q: Can SA110CA-E3/54 from Vishay replace the original onsemi SA110CA? A: Yes. Both parts share identical electrical specifications (110V standoff, 177V clamping, 2.8A peak pulse current) and DO-15/DO-204AC package configuration. The Vishay part is active product status, making it suitable for new designs and ongoing procurement.

Q: What is the difference between SA110CA variants from Micro Commercial Co (SA110CA-AP, SA110CA-BP, SA110CA-TP)? A: These three parts are electrically identical with 110V standoff, 177V clamping, and 2.9A peak pulse current. The suffix designations (AP, BP, TP) indicate different packaging or tape configurations but do not affect electrical performance or through-hole DO-15 compatibility.

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