SMBJ11A-M3/52 Equivalent & Substitute Parts

Part Overview

The SMBJ11A-M3/52 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the 11V reverse standoff category with an 18.2V maximum clamping voltage and 33A peak pulse current rating. The part is classified as Active product status and is RoHS3 compliant. Equivalent and substitute parts are identified when electrical parameters and mechanical compatibility align within the specified tolerance ranges for this TVS diode category.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	11	V
Voltage - Breakdown (Min)	12.2	V
Voltage - Clamping (Max) @ Ipp	18.2	V
Current - Peak Pulse (10/1000µs)	33	A
Power - Peak Pulse	600	W
Operating Temperature Range	-55 to 150	°C (TJ)
Package / Case	DO-214AA, SMB	-
Mounting Type	Surface Mount	-
Type	Zener	-
Unidirectional Channels	1	-

Substitute Part Grouping Explanation

Substitute parts for the SMBJ11A-M3/52 are qualified based on the following electrical and mechanical parameters:

Critical Parameters for Substitution:

Voltage - Reverse Standoff (Typ): 11V
Voltage - Clamping (Max) @ Ipp: 18.2V (or within 0.3V tolerance)
Current - Peak Pulse (10/1000µs): 33A (or within 1.5A tolerance)
Power - Peak Pulse: 600W
Package / Case: DO-214AA, SMB
Mounting Type: Surface Mount
Type: Zener, Unidirectional (1 channel)

Parts meeting these criteria are classified as direct substitutes. Packaging format (Tape & Reel vs. Cut Tape) does not affect electrical compatibility but may impact procurement and handling requirements.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (V)	Voltage - Clamping (Max) @ Ipp (V)	Current - Peak Pulse (A)	Power - Peak Pulse (W)	Package	Operating Temp (°C)	Product Status
SMBJ11A-M3/52	Vishay	11	18.2	33	600	DO-214AA, SMB	-55 to 150	Active
SMBJ11D-M3/H	Vishay	11	17.9	33.5	600	DO-214AA, SMB	-55 to 150	Active
SMBJ11A-E3/52	Vishay	11	18.2	33	600	DO-214AA, SMB	-55 to 150	Active
SMBJ11A	Meritek	11	18.2	32.97	600	DO-214AA, SMB	-55 to 150	Active
SMBJ11A-TP	Micro Commercial Co	11	18.2	33	600	DO-214AA, SMB	-55 to 175	Active

Engineering Selection Recommendations

All identified substitute parts maintain Active product status and RoHS3 compliance, meeting regulatory requirements equivalent to the SMBJ11A-M3/52. Selection among substitutes should be based on:

Electrical Performance: SMBJ11A-E3/52, SMBJ11A (Meritek), and SMBJ11A-TP provide identical or near-identical clamping voltage (18.2V) and peak pulse current (33A or 32.97A) specifications. SMBJ11D-M3/H offers a marginally lower clamping voltage (17.9V) with slightly higher peak pulse current (33.5A), remaining within acceptable tolerance ranges for the 11V standoff category.

Temperature Range: SMBJ11A-TP supports an extended operating temperature range (-55 to 175°C) compared to the standard -55 to 150°C range of other options, providing additional thermal margin for high-temperature applications.

Packaging Format: Tape & Reel (TR) packaging is standard for high-volume production environments. Cut Tape (CT) packaging, as provided by SMBJ11D-M3/H, is suitable for lower-volume or mixed-component procurement scenarios.

Inventory Availability: SMBJ11A-E3/52 offers the highest inventory level (45,400 pcs), followed by SMBJ11A (Meritek) at 50,100 pcs, supporting consistent supply chain access.

Frequently Asked Questions (FAQ)

Q: Can SMBJ11D-M3/H be used as a direct replacement for SMBJ11A-M3/52?

A: Yes. Both parts share the same 11V reverse standoff voltage, 600W peak pulse power, and DO-214AA SMB package. The clamping voltage difference (17.9V vs. 18.2V) and peak pulse current variation (33.5A vs. 33A) fall within acceptable tolerance ranges for TVS diode substitution in the 11V category.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging provides components on continuous carrier tape suitable for automated pick-and-place assembly. Cut Tape (CT) packaging supplies the same components on shorter tape segments, typically used for lower-volume orders or manual assembly processes. Electrical performance is identical.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts carry RoHS3 Compliant certification, matching the compliance status of the SMBJ11A-M3/52.

Q: Which substitute offers the widest operating temperature range?

A: SMBJ11A-TP supports -55 to 175°C (TJ), extending 25°C above the standard -55 to 150°C range. This option is suitable for applications requiring enhanced thermal performance.

Q: Can I substitute based on manufacturer alone?

A: No. Substitution must be based on electrical parameters (voltage, current, power ratings) and mechanical compatibility (package type, mounting method). Manufacturer identity is secondary to parameter alignment.

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