SAC15-TP Equivalent & Substitute Parts

Part Overview

The SAC15-TP is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Micro Commercial Co, rated for 15V reverse standoff with a 23.6V maximum clamping voltage at 20A peak pulse current. Housed in a DO-15 (DO-204AC) axial through-hole package, this component is designed for general-purpose transient voltage protection applications. The part is currently active and ROHS3 compliant with unlimited moisture sensitivity rating.

Equivalent and substitute parts are identified when they maintain the same functional voltage protection characteristics within the specified electrical parameters while accommodating different packaging formats or manufacturer sourcing requirements.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	15	V
Voltage - Breakdown (Min)	16.7	V
Voltage - Clamping (Max) @ Ipp	23.6	V
Current - Peak Pulse (10/1000µs)	20	A
Power - Peak Pulse	500	W
Operating Temperature Range	-55 to 175	°C
Mounting Type	Through Hole	—
Package / Case	DO-204AC, DO-15, Axial	—
Type	Zener	—
Unidirectional Channels	1	—

Substitute Part Grouping Explanation

Substitute parts for the SAC15-TP are classified based on electrical parameter compatibility within the following criteria:

Direct Equivalents maintain identical voltage ratings (15V reverse standoff, 16.7V minimum breakdown, 23.6V maximum clamping) and current handling (20A peak pulse), differing only in packaging format (Cut Tape vs. Tape & Reel) or manufacturer sourcing:

SAC15 (Littelfuse Inc.)
SAC15-E3/54 (Vishay General Semiconductor)

Similar Substitutes share the same reverse standoff voltage (15V) and breakdown voltage (16.7V minimum) but vary in clamping voltage, peak pulse current, or power dissipation capacity. These parts are functionally compatible for applications where the higher performance parameters do not create design conflicts:

SA15A (Taiwan Semiconductor Corporation)
LCE15A (Littelfuse Inc.)
P6KE18A (Fairchild Semiconductor)

Substitution eligibility is determined by matching the reverse standoff voltage, breakdown voltage range, and operating temperature specifications. Package format differences (DO-15, DO-201, DO-204AC) are mechanical considerations that do not affect electrical substitutability within through-hole mounting applications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Operating Temperature	Package / Case	Product Status
SAC15-TP	Micro Commercial Co	15V	16.7V	23.6V	20A	500W	-55 to 175°C	DO-204AC, DO-15	Active
SAC15	Littelfuse Inc.	15V	16.7V	23.6V	20A	500W	-55 to 175°C	DO-204AC, DO-15	Active
SAC15-E3/54	Vishay General Semiconductor	15V	16.7V	23.6V	20A	500W	-55 to 175°C	DO-204AC, DO-15	Active
SA15A	Taiwan Semiconductor Corporation	15V	16.7V	24.4V	21A	500W	-55 to 175°C	DO-204AC, DO-15	Active
LCE15A	Littelfuse Inc.	15V	16.7V	24.4V	61A	1500W	-55 to 175°C	DO-201AA, DO-27	Active
P6KE18A	Fairchild Semiconductor	15.3V	17.1V	25.2V	25A	600W	-50 to 175°C	DO-204AC, DO-15	Active

Engineering Selection Recommendations

All listed substitute parts maintain active product status and ROHS3 compliance, ensuring continued availability and regulatory alignment with the SAC15-TP.

For direct replacement without design modification: Select SAC15 (Littelfuse Inc.) or SAC15-E3/54 (Vishay General Semiconductor). Both parts provide identical electrical specifications and operating temperature range. The choice between these options depends on packaging preference (Cut Tape vs. Tape & Reel) and supplier availability.

For applications requiring enhanced current handling or power dissipation: LCE15A offers 61A peak pulse current and 1500W power dissipation within the same voltage protection window, though it requires DO-201 package accommodation. SA15A provides marginal improvements (21A peak pulse, 24.4V clamping) while maintaining DO-15 compatibility.

For applications with slightly elevated voltage tolerance: P6KE18A operates at 15.3V reverse standoff with 25.2V clamping voltage and 25A peak pulse current, suitable when circuit design permits the higher clamping threshold. Operating temperature minimum is -50°C versus -55°C for the primary part.

Selection should be based on circuit voltage tolerance, current requirements, thermal dissipation capacity, and mechanical package constraints specific to the application.

Frequently Asked Questions (FAQ)

Q: Can SAC15 be used as a direct replacement for SAC15-TP?

A: Yes. SAC15 (Littelfuse Inc.) is a direct electrical equivalent with identical voltage ratings (15V standoff, 16.7V breakdown, 23.6V clamping), current handling (20A peak pulse), and operating temperature range (-55 to 175°C). The difference is packaging format (Cut Tape vs. Tape & Reel) and manufacturer sourcing.

Q: What is the difference between SAC15-E3/54 and SAC15-TP?

A: Both parts share identical electrical specifications and operating temperature range. SAC15-E3/54 is manufactured by Vishay General Semiconductor under the TransZorb® series designation, while SAC15-TP is from Micro Commercial Co. The functional performance is equivalent.

Q: Can LCE15A replace SAC15-TP in all applications?

A: LCE15A maintains the same 15V reverse standoff and 16.7V breakdown voltage, making it electrically compatible for voltage protection. However, it features a DO-201 package instead of DO-15, requiring mechanical board layout accommodation. The higher current rating (61A vs. 20A) and power dissipation (1500W vs. 500W) make it suitable for higher-stress applications but unnecessary for designs matching the original 20A specification.

Q: Is SA15A compatible with SAC15-TP?

A: SA15A is functionally compatible, sharing the same 15V reverse standoff and 16.7V breakdown voltage. It provides slightly higher clamping voltage (24.4V vs. 23.6V) and peak pulse current (21A vs. 20A) within the same DO-15 package. Applications must tolerate the marginally higher clamping threshold.

Q: What are the package differences between DO-15 and DO-201?

A: Both are axial through-hole packages for transient voltage suppressors. DO-15 (DO-204AC) is the smaller standard package used in SAC15-TP, SAC15, and SA15A. DO-201 (DO-27) is a larger package used in LCE15A, accommodating higher current and power dissipation ratings. Board layout and lead spacing differ between these formats.

Q: Can P6KE18A be used where SAC15-TP is specified?

A: P6KE18A is electrically compatible for voltage protection applications, with 15.3V reverse standoff and 17.1V breakdown voltage. The higher clamping voltage (25.2V vs. 23.6V) and peak pulse current (25A vs. 20A) require circuit design verification to confirm voltage tolerance. Operating temperature minimum is -50°C instead of -55°C.

Q: Are all substitute parts ROHS3 compliant?

A: SAC15, SAC15-E3/54, SA15A, and LCE15A are confirmed ROHS3 compliant. P6KE18A compliance status is not specified in the provided data and should be verified with the manufacturer before selection for regulated applications.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message