SMBJ22C-E3/52 Equivalent & Substitute Parts

Part Overview

The SMBJ22C-E3/52 is a bidirectional Zener transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division in the DO-214AA (SMB) surface mount package. This component is designed for general-purpose transient voltage suppression applications with a 22V reverse standoff voltage and 39.4V maximum clamping voltage at peak pulse current.

The SMBJ22C-E3/52 is classified as obsolete. Equivalent and substitute parts are available from multiple manufacturers with active product status, offering comparable electrical performance and identical mechanical compatibility for direct board-level replacement.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	22	V
Voltage - Breakdown (Min)	24.4	V
Voltage - Clamping (Max) @ Ipp	39.4	V
Current - Peak Pulse (10/1000µs)	15.2	A
Power - Peak Pulse	600	W
Operating Temperature Range	-55 to 150	°C (TJ)
Mounting Type	Surface Mount	-
Package / Case	DO-214AA, SMB	-
Bidirectional Channels	1	-
Type	Zener	-
RoHS Status	ROHS3 Compliant	-
Moisture Sensitivity Level (MSL)	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitute parts for the SMBJ22C-E3/52 are grouped into two electrical categories based on clamping voltage performance:

Group A - Matched Clamping Voltage (39.4V @ Ipp): Parts maintaining identical maximum clamping voltage specification. These provide direct electrical equivalence with no performance deviation in transient suppression characteristics.

Group B - Alternative Clamping Voltage (35.5V @ Ipp): Parts with lower maximum clamping voltage but identical reverse standoff voltage, breakdown voltage, and power rating. These offer functional substitution with improved clamping performance (lower voltage stress during transient events) while maintaining the same 22V protection threshold.

All substitute parts share the following critical parameters with the main part:

Reverse Standoff Voltage: 22V
Breakdown Voltage (Min): 24.4V
Power - Peak Pulse: 600W
Package: DO-214AA / SMB surface mount
Bidirectional Zener configuration
RoHS3 compliance
MSL 1 rating

Parameter Comparison

Manufacturer Part Number	Manufacturer	Product Status	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Operating Temperature (TJ)	Packaging
SMBJ22C-E3/52	Vishay General Semiconductor - Diodes Division	Obsolete	39.4V	15.2A	-55 to 150°C	Bulk
SMBJ22CE3/TR13	Microchip Technology	Active	39.4V	15.2A	-65 to 150°C	Tape & Reel (TR)
SMBJ22CA-E3/52	Vishay General Semiconductor - Diodes Division	Active	35.5V	16.9A	-55 to 150°C	Tape & Reel (TR)
1SMB22CA TR13 PBFREE	Central Semiconductor Corp	Active	35.5V	16.9A	-65 to 150°C	Tape & Reel (TR)
SMBJ22CA	MDD	Active	35.5V	16.9A	-50 to 150°C	Tape & Reel (TR)
SMBJ22CA-13-F	Diodes Incorporated	Active	35.5V	16.9A	-55 to 150°C	Tape & Reel (TR)
SMBJ22CA-TP	Micro Commercial Co	Active	35.5V	16.9A	-55 to 175°C	Tape & Reel (TR)
SMBJ22CA-TR	STMicroelectronics	Active	35.5V	17.7A	-55 to 150°C	Cut Tape (CT) & Digi-Reel®
SMBJ22CAE3/TR13	Microchip Technology	Active	35.5V	16.9A	-65 to 150°C	Tape & Reel (TR)

Engineering Selection Recommendations

For Direct Electrical Equivalence (39.4V Clamping):

SMBJ22CE3/TR13 (Microchip Technology) provides identical clamping voltage performance to the obsolete SMBJ22C-E3/52. This part is active, RoHS3 compliant, and extends the operating temperature range to -65°C. It is supplied in Tape & Reel packaging with 1,073 units in stock.

For Enhanced Performance with Lower Clamping Voltage (35.5V Clamping):

Multiple active alternatives offer improved transient suppression with lower maximum clamping voltage:

SMBJ22CA-E3/52 (Vishay) maintains the original manufacturer lineage with 19,650 units available
SMBJ22CA-TR (STMicroelectronics) provides the highest peak pulse current rating (17.7A) with 15,100 units in stock
SMBJ22CA-TP (Micro Commercial Co) extends the upper operating temperature to 175°C with 4,256 units available
SMBJ22CAE3/TR13 (Microchip Technology) offers the widest operating temperature range (-65 to 150°C) with 1,041 units in stock

All substitute parts maintain RoHS3 compliance, MSL 1 rating, and DO-214AA / SMB package compatibility for direct PCB replacement without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can SMBJ22CA variants (35.5V clamping) replace the SMBJ22C-E3/52 (39.4V clamping)?

A: Yes. Both groups share identical reverse standoff voltage (22V), breakdown voltage (24.4V), and power rating (600W). The SMBJ22CA variants provide lower maximum clamping voltage, which reduces voltage stress during transient events. This represents improved performance for the same protection threshold. Selection depends on circuit design requirements for maximum allowable clamping voltage.

Q: Are all substitute parts mechanically compatible with the original SMBJ22C-E3/52?

A: Yes. All listed substitutes use the DO-214AA (SMB) surface mount package with identical footprint and lead configuration. No PCB layout modifications are required for direct replacement.

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

A: The original SMBJ22C-E3/52 is supplied in bulk packaging. All active substitutes are available in Tape & Reel (TR) or Cut Tape (CT) formats, which are standard for automated assembly processes. Tape & Reel packaging does not affect electrical performance or mechanical compatibility.

Q: Which substitute offers the widest operating temperature range?

A: SMBJ22CE3/TR13 (Microchip) and SMBJ22CAE3/TR13 (Microchip) both extend the lower operating temperature to -65°C compared to the original -55°C specification. SMBJ22CA-TP (Micro Commercial Co) extends the upper temperature to 175°C.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitute parts are RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's environmental certifications.

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