SMBJ188CA-M3/52 Equivalent & Substitute Parts

Part Overview

The SMBJ188CA-M3/52 is a bidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the TransZorb® series and is designed for general-purpose transient voltage suppression applications. The part is currently in active production status with 1097 units in stock. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to component availability, supply chain considerations, or design flexibility within the allowed parameter ranges.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	188	V
Voltage - Breakdown (Min)	209	V
Voltage - Clamping (Max) @ Ipp	328	V
Current - Peak Pulse (10/1000µs)	2	A
Power - Peak Pulse	600	W
Operating Temperature Range	-55 to 150	°C (TJ)
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the SMBJ188CA-M3/52 are identified based on the following criteria:

Direct Manufacturer Substitutes (Same Electrical Specifications): Parts that maintain identical electrical parameters across all critical specifications including reverse standoff voltage, breakdown voltage, clamping voltage, peak pulse current, and power dissipation. These parts are interchangeable without circuit redesign.

Manufacturer-Recommended Alternatives (Related Voltage Class): Parts that operate within the same product family but with different voltage ratings. These alternatives are suitable when circuit design allows for voltage parameter variation within the specified ranges.

Critical Parameters for Substitution:

Voltage - Reverse Standoff (Typ): 188V (direct) or 160V (alternative)
Voltage - Clamping (Max) @ Ipp: 328V (direct) or 259V (alternative)
Current - Peak Pulse (10/1000µs): 2A (direct) or 2.3A (alternative)
Package / Case: DO-214AA, SMB (all parts)
Mounting Type: Surface Mount (all parts)

Parameter Comparison

Parameter	SMBJ188CA-M3/52 (Main)	SMBJ188CA-E3/52 (Direct Substitute)	SMBJ160CA (Alternative)
Manufacturer	Vishay General Semiconductor	Vishay General Semiconductor	Taiwan Semiconductor Corporation
Voltage - Reverse Standoff (Typ)	188V	188V	160V
Voltage - Breakdown (Min)	209V	209V	178V
Voltage - Clamping (Max) @ Ipp	328V	328V	259V
Current - Peak Pulse (10/1000µs)	2A	2A	2.3A
Power - Peak Pulse	600W	600W	600W
Operating Temperature Range	-55 to 150°C (TJ)	-55 to 150°C (TJ)	-55 to 150°C (TJ)
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
Mounting Type	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active
Inventory Availability	1097 Pcs	1900 Pcs	1700 Pcs

Engineering Selection Recommendations

SMBJ188CA-E3/52 (Direct Substitute): This part is manufactured by Vishay General Semiconductor and maintains identical electrical specifications to the SMBJ188CA-M3/52. Both parts share the same base product number (SMBJ188), voltage ratings, current handling, and thermal characteristics. The difference between the two parts is limited to packaging designation (M3/52 versus E3/52), which reflects different tape and reel configurations from the same manufacturer. This part is suitable for direct replacement in all applications where the SMBJ188CA-M3/52 is specified. Higher inventory availability (1900 units) may provide supply chain advantages.

SMBJ160CA (Manufacturer-Recommended Alternative): This part is manufactured by Taiwan Semiconductor Corporation and operates at a lower voltage class within the SMBJ family. The SMBJ160CA has a reverse standoff voltage of 160V compared to 188V in the main part, with corresponding reductions in breakdown voltage (178V minimum versus 209V) and clamping voltage (259V maximum versus 328V). Peak pulse current capability is slightly higher at 2.3A versus 2A. This part is suitable only when circuit design specifications allow for operation at the lower voltage ratings. All parts maintain identical operating temperature range, package type, RoHS compliance, and MSL rating.

Frequently Asked Questions (FAQ)

Q: Can SMBJ188CA-E3/52 be used as a direct replacement for SMBJ188CA-M3/52?

A: Yes. Both parts are manufactured by Vishay General Semiconductor with identical electrical specifications. The designation difference (M3/52 versus E3/52) refers to tape and reel packaging configurations only. Electrical performance, thermal characteristics, and compliance certifications are equivalent.

Q: What is the difference between SMBJ188CA-M3/52 and SMBJ160CA?

A: The SMBJ160CA operates at a lower voltage class. Reverse standoff voltage is 160V versus 188V, breakdown voltage is 178V minimum versus 209V, and clamping voltage is 259V maximum versus 328V. Peak pulse current is 2.3A versus 2A. Use SMBJ160CA only when circuit design permits operation at these lower voltage ratings.

Q: Are all substitute parts in the same package?

A: Yes. All parts listed use the DO-214AA (SMB) surface mount package. Mechanical compatibility and PCB footprint requirements are identical across all parts.

Q: Do all substitute parts meet the same compliance standards?

A: Yes. All parts are ROHS3 compliant, have MSL rating of 1 (Unlimited), and are classified as REACH Unaffected. Operating temperature range is -55°C to 150°C (TJ) for all parts.

Q: Which substitute part should be selected for maximum inventory availability?

A: SMBJ188CA-E3/52 has the highest inventory availability at 1900 units, compared to 1097 units for the main part and 1700 units for SMBJ160CA.

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