SMBJ17CA-M3/52 Equivalent & Substitute Parts

Part Overview

The SMBJ17CA-M3/52 is a bidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the DO-214AA (SMB) package and provides transient overvoltage protection for general-purpose applications. The part is Active status and RoHS3 compliant. Equivalent and substitute parts are identified when electrical parameters and mechanical specifications align within acceptable tolerances for the application circuit.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	17	V
Voltage - Breakdown (Min)	18.9	V
Voltage - Clamping (Max) @ Ipp	27.6	V
Current - Peak Pulse (10/1000µs)	21.7	A
Power - Peak Pulse	600	W
Bidirectional Channels	1	—
Type	Zener	—
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
Operating Temperature	-55°C ~ 150°C	TJ
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the SMBJ17CA-M3/52 are grouped into two categories based on electrical parameter alignment:

Category 1: Direct Electrical Equivalents Parts that maintain identical or near-identical electrical specifications across all critical parameters: Voltage - Reverse Standoff (17V), Voltage - Breakdown (18.9V), Voltage - Clamping (27.6V), Current - Peak Pulse (21.7A), and Power - Peak Pulse (600W). These parts are interchangeable in applications where the exact electrical performance of the SMBJ17CA-M3/52 is required. All parts in this category use the DO-214AA (SMB) surface mount package and operate within the same temperature range or extended ranges.

Category 2: Adjacent Voltage Rating Substitutes Parts with voltage ratings adjacent to the 17V standoff specification (16V or 18V ratings). These are suitable for applications where slight variations in clamping voltage are acceptable within the circuit design margins. These parts maintain the same package type and mounting configuration but operate at different voltage thresholds.

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	RoHS Status
SMBJ17CA-M3/52	Vishay General Semiconductor - Diodes Division	17V	18.9V	27.6V	21.7A	600W	-55°C ~ 150°C	DO-214AA, SMB	ROHS3 Compliant
SMBJ17CA-E3/52	Vishay General Semiconductor - Diodes Division	17V	18.9V	27.6V	21.7A	600W	-55°C ~ 150°C	DO-214AA, SMB	ROHS3 Compliant
SMBJ17CA	Meritek	17V	18.9V	27.6V	21.74A	600W	-55°C ~ 150°C	DO-214AA, SMB	ROHS3 Compliant
SMBJ17CA-13-F	Diodes Incorporated	17V	18.9V	27.6V	21.7A	600W	-55°C ~ 150°C	DO-214AA, SMB	ROHS3 Compliant
SMBJ17CA-TP	Micro Commercial Co	17V	18.9V	27.6V	21.7A	600W	-55°C ~ 175°C	DO-214AA, SMB	ROHS3 Compliant
SZ1SMB17CAT3G	Littelfuse Inc.	17V	18.9V	27.6V	21.7A	600W	-65°C ~ 150°C	DO-214AA, SMB	ROHS3 Compliant
SMBJ16CA	EVVO Semi	16V	17.8V	26V	23.1A	600W	-65°C ~ 150°C	DO-214AA, SMB	ROHS3 Compliant
SMBJ18CA	MDD	18V	20V	29.2V	20.6A	600W	-50°C ~ 150°C	DO-214AA, SMB	ROHS3 Compliant

Engineering Selection Recommendations

Direct Equivalents (Preferred for Drop-In Replacement)

SMBJ17CA-E3/52 (Vishay), SMBJ17CA (Meritek), SMBJ17CA-13-F (Diodes Incorporated), SMBJ17CA-TP (Micro Commercial Co), and SZ1SMB17CAT3G (Littelfuse) maintain identical or functionally equivalent electrical specifications to the SMBJ17CA-M3/52. All are Active status products with ROHS3 compliance and MSL 1 rating. Selection among these direct equivalents depends on inventory availability and supply chain requirements. SMBJ17CA-TP offers an extended upper operating temperature of 175°C versus 150°C. SZ1SMB17CAT3G includes AEC-Q101 automotive qualification and extended lower temperature rating (-65°C).

Adjacent Voltage Rating Substitutes (Application-Dependent)

SMBJ16CA (16V standoff) and SMBJ18CA (18V standoff) are suitable substitutes when circuit design margins accommodate voltage rating variations. SMBJ16CA operates at a lower standoff voltage with higher peak pulse current (23.1A) and extended temperature range (-65°C to 150°C). SMBJ18CA operates at a higher standoff voltage with slightly lower peak pulse current (20.6A). Both maintain the DO-214AA (SMB) package and 600W peak pulse power rating. These substitutes are appropriate only when the application circuit has been analyzed to confirm compatibility with the different voltage thresholds.

Frequently Asked Questions (FAQ)

Q: Can SMBJ17CA-E3/52 replace SMBJ17CA-M3/52 directly?

A: Yes. SMBJ17CA-E3/52 is a direct electrical equivalent with identical voltage ratings (17V standoff, 27.6V clamping), current specifications (21.7A peak pulse), and operating temperature range (-55°C to 150°C). Both use DO-214AA (SMB) packaging and are ROHS3 compliant. The difference is in the tape and reel configuration code (E3/52 versus M3/52), which does not affect electrical performance.

Q: What is the difference between SMBJ17CA and SMBJ17CA-13-F?

A: Both parts maintain identical electrical specifications: 17V standoff, 18.9V breakdown, 27.6V clamping, and 21.7A peak pulse current. The suffix designations (-13-F) indicate different packaging or supplier configurations. Both are manufactured to the same electrical standard and are suitable for direct substitution in the same circuit application.

Q: Can SMBJ16CA or SMBJ18CA be used instead of SMBJ17CA-M3/52?

A: SMBJ16CA and SMBJ18CA have different voltage ratings and are not direct equivalents. SMBJ16CA operates at 16V standoff with 26V clamping, while SMBJ18CA operates at 18V standoff with 29.2V clamping. These parts are suitable substitutes only if the application circuit has been designed with tolerance margins that accommodate the different voltage thresholds. Direct substitution without circuit analysis is not recommended.

Q: Why does SZ1SMB17CAT3G have a different part number format?

A: SZ1SMB17CAT3G is manufactured by Littelfuse Inc. and uses a different naming convention. Despite the different part number format, it maintains identical electrical specifications to SMBJ17CA-M3/52 (17V standoff, 27.6V clamping, 21.7A peak pulse). The part includes AEC-Q101 automotive qualification and operates across an extended lower temperature range (-65°C to 150°C).

Q: What is the significance of the operating temperature range differences?

A: SMBJ17CA-M3/52 operates from -55°C to 150°C. SMBJ17CA-TP extends the upper limit to 175°C, suitable for higher ambient temperature applications. SZ1SMB17CAT3G extends the lower limit to -65°C, suitable for cold environment applications. These temperature range variations do not affect electrical performance within the specified operating window and are determined by the manufacturer's qualification and testing protocols.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the environmental and regulatory status of SMBJ17CA-M3/52.

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