1.5SMC47CA-M3/9AT Equivalent & Substitute Parts

Part Overview

The 1.5SMC47CA-M3/9AT is a bidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the 1.5SMC TransZorb® series and is designed for general-purpose transient voltage suppression applications. The device features a 40.2V reverse standoff voltage with 64.8V maximum clamping voltage and 23.1A peak pulse current capability in a DO-214AB (SMC) package. With 819 units currently in stock and Active product status, this component is readily available. Equivalent and substitute parts are identified based on matching electrical parameters, package compatibility, and operational specifications to ensure direct interchangeability in circuit designs.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	40.2	V
Voltage - Breakdown (Min)	44.7	V
Voltage - Clamping (Max) @ Ipp	64.8	V
Current - Peak Pulse (10/1000µs)	23.1	A
Power - Peak Pulse	1500	W
Package / Case	DO-214AB, SMC	-
Operating Temperature Range	-65 to 150	°C
Type	Zener	-
Bidirectional Channels	1	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitute parts for the 1.5SMC47CA-M3/9AT are qualified based on the following critical parameters that determine functional interchangeability:

Electrical Parameters (Must Match):

Voltage - Reverse Standoff (Typ): 40.2V
Voltage - Breakdown (Min): 44.7V
Voltage - Clamping (Max) @ Ipp: 64.8V
Power - Peak Pulse: 1500W (1.5kW)
Type: Zener, Bidirectional

Mechanical Parameters (Must Match):

Package / Case: DO-214AB, SMC
Mounting Type: Surface Mount
Bidirectional Channels: 1

Compliance Parameters:

RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Peak pulse current values between 23.1A and 24A are acceptable within the 1.5kW power dissipation envelope. Operating temperature ranges may vary between manufacturers while maintaining the specified electrical performance. All identified substitutes maintain identical voltage ratings, power handling, and package specifications.

Parameter Comparison

Parameter	1.5SMC47CA-M3/9AT (Vishay)	1.5SMC47CA-E3/57T (Vishay)	1.5SMC47CA (Taiwan Semi)	1.5SMC47CA V7G (Taiwan Semi)	SMCJ1.5KE47CA-TP (Micro Commercial)	TPSMC47CA (Littelfuse)
Manufacturer	Vishay	Vishay	Taiwan Semiconductor	Taiwan Semiconductor	Micro Commercial Co	Littelfuse Inc.
Voltage - Reverse Standoff (Typ)	40.2V	40.2V	40.2V	40.2V	40.2V	40.2V
Voltage - Breakdown (Min)	44.7V	44.7V	44.7V	44.7V	44.7V	44.7V
Voltage - Clamping (Max) @ Ipp	64.8V	64.8V	64.8V	64.8V	64.8V	64.8V
Current - Peak Pulse (10/1000µs)	23.1A	23.1A	24A	24A	24.6A	24.6A
Power - Peak Pulse	1500W	1500W	1500W	1500W	1500W	1500W
Package / Case	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC
Operating Temperature Range	-65 to 150°C	-65 to 150°C	-55 to 150°C	-55 to 150°C	-55 to 175°C	-55 to 150°C
Type	Zener	Zener	Zener	Zener	Zener	Zener
Bidirectional Channels	1	1	1	1	1	1
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Discontinued at DiGi Electronics	Active	Active
Inventory Availability	819 Pcs	2803 Pcs	3200 Pcs	2463 Pcs	2800 Pcs	3966 Pcs

Engineering Selection Recommendations

All identified substitute parts maintain electrical and mechanical compatibility with the 1.5SMC47CA-M3/9AT. Selection should prioritize the following factors:

Active Product Status: The 1.5SMC47CA-E3/57T (Vishay), 1.5SMC47CA (Taiwan Semiconductor), SMCJ1.5KE47CA-TP (Micro Commercial Co), and TPSMC47CA (Littelfuse) all maintain Active product status. The 1.5SMC47CA V7G (Taiwan Semiconductor) is Discontinued at DiGi Electronics and should be avoided for new designs requiring long-term availability.

Compliance and Certification: All substitutes are ROHS3 Compliant with MSL 1 (Unlimited) moisture sensitivity rating. The TPSMC47CA includes AEC-Q101 automotive qualification and is designated as Automotive Grade, providing additional qualification for applications requiring automotive-level reliability.

Inventory Availability: The TPSMC47CA (Littelfuse) offers the highest inventory level at 3966 units, followed by 1.5SMC47CA (Taiwan Semiconductor) at 3200 units. The original 1.5SMC47CA-M3/9AT maintains 819 units in stock.

Operating Temperature Range: The SMCJ1.5KE47CA-TP (Micro Commercial Co) provides the widest operating temperature range (-55 to 175°C), exceeding the original part's -65 to 150°C specification. The original 1.5SMC47CA-M3/9AT offers the lowest minimum operating temperature at -65°C.

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitute parts as a direct replacement for the 1.5SMC47CA-M3/9AT?

A: Yes, all listed substitute parts are electrically and mechanically compatible. They share identical voltage ratings (40.2V standoff, 64.8V clamping), power dissipation (1500W), package type (DO-214AB, SMC), and compliance certifications (ROHS3). Peak pulse current variations (23.1A to 24A) remain within the 1.5kW power envelope and do not affect functional interchangeability.

Q: What is the difference between the Vishay 1.5SMC47CA-M3/9AT and 1.5SMC47CA-E3/57T?

A: Both are Vishay products with identical electrical specifications and operating temperature ranges (-65 to 150°C). The primary difference is packaging designation: the M3/9AT uses Tape & Reel (TR) packaging with the M3/9AT suffix, while the E3/57T uses Tape & Reel (TR) packaging with the E3/57T suffix. The E3/57T offers higher inventory availability (2803 units vs. 819 units).

Q: Why should I avoid the 1.5SMC47CA V7G?

A: The 1.5SMC47CA V7G is Discontinued at DiGi Electronics, indicating reduced long-term availability. For new designs or applications requiring sustained component supply, Active status parts such as the 1.5SMC47CA (Taiwan Semiconductor), SMCJ1.5KE47CA-TP (Micro Commercial Co), or TPSMC47CA (Littelfuse) are recommended.

Q: Does the TPSMC47CA automotive qualification affect its use in non-automotive applications?

A: No. The TPSMC47CA's AEC-Q101 automotive qualification and Automotive Grade designation indicate it meets additional reliability and testing standards. This component is fully compatible with general-purpose applications and provides enhanced quality assurance for any application requiring higher reliability margins.

Q: Are there any operating temperature limitations I should consider?

A: The original 1.5SMC47CA-M3/9AT operates from -65 to 150°C. Most substitutes operate from -55 to 150°C, representing a 10°C higher minimum temperature. The SMCJ1.5KE47CA-TP extends to 175°C maximum. If your application requires operation below -55°C, the original Vishay parts (1.5SMC47CA-M3/9AT or 1.5SMC47CA-E3/57T) are required.

Q: Do all these parts use the same DO-214AB package?

A: Yes. All substitute parts use the DO-214AB (SMC or SMCJ) surface mount package, ensuring identical PCB footprint compatibility and soldering requirements. No layout or assembly modifications are necessary when substituting between these parts.

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