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SMBJ22-E3/52 Transient Voltage Suppressor Diode – Equivalent & Substitute Parts
Part Overview
The SMBJ22-E3/52 is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor – Diodes Division in the TransZorb® series. This surface-mount component operates in the DO-214AA (SMB) package and is designed for general-purpose transient voltage suppression applications. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | SMBJ22-E3/52 |
| Manufacturer | Vishay General Semiconductor – Diodes Division |
| Category | Transient Voltage Suppressors (TVS) |
| Package / Case | DO-214AA, SMB |
| Mounting Type | Surface Mount |
| Type | Zener |
| Unidirectional Channels | 1 |
| Voltage – Reverse Standoff (Typ) | 22V |
| Voltage – Breakdown (Min) | 24.4V |
| Voltage – Clamping (Max) @ Ipp | 39.4V |
| Current – Peak Pulse (10/1000µs) | 15.2A |
| Power – Peak Pulse | 600W |
| Operating Temperature Range | -55°C ~ 150°C (TJ) |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution of the SMBJ22-E3/52 is determined by strict electrical and mechanical compatibility across the following parameters:
Critical Matching Parameters:
- Reverse Standoff Voltage: 22V (nominal)
- Breakdown Voltage (Min): 24.4V
- Package / Case: DO-214AA (SMB) surface mount
- Mounting Type: Surface mount
- Unidirectional configuration (single channel)
- Type: Zener diode
Allowable Variation Parameters:
- Voltage – Clamping (Max) @ Ipp: 35.4V to 39.4V range
- Current – Peak Pulse (10/1000µs): 14A to 17.7A range
- Power – Peak Pulse: 500W to 600W range
- Operating Temperature Range: -55°C to -65°C (minimum) and 150°C to 175°C (maximum)
Substitute parts must maintain identical reverse standoff voltage, breakdown voltage, and package specifications. Variations in clamping voltage, peak pulse current, and power dissipation within the specified ranges are acceptable for general-purpose applications. All substitute parts listed are ROHS3 compliant with MSL 1 rating.
Parameter Comparison
| Part Number | Manufacturer | Voltage – Clamping (Max) @ Ipp | Current – Peak Pulse (10/1000µs) | Power – Peak Pulse | Operating Temperature (TJ) | Product Status | Packaging |
|---|---|---|---|---|---|---|---|
| SMBJ22-E3/52 | Vishay General Semiconductor – Diodes Division | 39.4V | 15.2A | 600W | -55°C ~ 150°C | Obsolete | DO-214AA (SMBJ) |
| SMBJ22A-E3/52 | Vishay General Semiconductor – Diodes Division | 35.5V | 16.9A | 600W | -55°C ~ 150°C | Active | DO-214AA (SMBJ), Tape & Reel (TR) |
| SMBJ22E3/TR13 | Microchip Technology | 39.4V | 15.2A | 600W | -65°C ~ 150°C | Active | SMBJ (DO-214AA), Tape & Reel (TR) |
| SACB22 | Littelfuse Inc. | 35.4V | 14A | 500W | -55°C ~ 150°C | Active | SMB, Tape & Reel (TR) |
| SMBJ22A | Meritek | 35.5V | 16.9A | 600W | -55°C ~ 150°C | Active | DO-214AA (SMB) |
| SMBJ22A-13-F | Diodes Incorporated | 35.5V | 16.9A | 600W | -55°C ~ 150°C | Active | SMB, Cut Tape (CT) & Digi-Reel® |
| SMBJ22A-TP | Micro Commercial Co | 35.5V | 16.9A | 600W | -55°C ~ 175°C | Active | DO-214AA (SMB), Tape & Reel (TR) |
| SMBJ22A-TR | STMicroelectronics | 35.5V | 17.7A | 600W | -55°C ~ 150°C | Active | SMB (DO-214AA), Tape & Reel (TR) |
| SMBJ22AE3/TR13 | Microchip Technology | 35.5V | 16.9A | 600W | -65°C ~ 150°C | Active | SMBJ (DO-214AA), Tape & Reel (TR) |
Engineering Selection Recommendations
Primary Recommendation – Direct Electrical Match: SMBJ22E3/TR13 (Microchip Technology) provides identical clamping voltage (39.4V) and peak pulse current (15.2A) specifications to the original SMBJ22-E3/52. This part is active and available in Tape & Reel packaging. Extended operating temperature range (-65°C minimum) provides additional thermal margin.
Secondary Recommendation – Active Vishay Alternative: SMBJ22A-E3/52 (Vishay General Semiconductor – Diodes Division) maintains manufacturer continuity with the original part. This active part operates within acceptable clamping voltage (35.5V) and peak pulse current (16.9A) parameters. Available in Tape & Reel packaging with identical temperature range to the original.
Alternative Options – Extended Temperature Range: SMBJ22A-TP (Micro Commercial Co) extends the maximum operating temperature to 175°C while maintaining 600W peak pulse power and 35.5V clamping voltage. Suitable for applications requiring elevated temperature performance.
Compliance Basis: All substitute parts are ROHS3 compliant with MSL 1 rating, matching the original part's environmental certifications. All parts maintain identical reverse standoff voltage (22V) and breakdown voltage (24.4V) specifications. Selection should be based on availability, packaging requirements (Tape & Reel vs. bulk), and thermal operating range needs.
Frequently Asked Questions (FAQ)
Q: Can SMBJ22A-E3/52 directly replace SMBJ22-E3/52? A: Yes. Both parts share identical reverse standoff voltage (22V), breakdown voltage (24.4V), and DO-214AA package specifications. The SMBJ22A-E3/52 is active and available in Tape & Reel packaging. Clamping voltage is 35.5V versus 39.4V on the original, which remains within acceptable substitution parameters for general-purpose applications.
Q: What is the difference between SMBJ22E3/TR13 and SMBJ22AE3/TR13? A: SMBJ22E3/TR13 matches the original clamping voltage at 39.4V with 15.2A peak pulse current. SMBJ22AE3/TR13 operates at 35.5V clamping with 16.9A peak pulse current. Both are Microchip Technology products with extended temperature range (-65°C minimum). Selection depends on whether the original 39.4V clamping specification is required for the application.
Q: Are all substitute parts available in Tape & Reel packaging? A: Most substitute parts are available in Tape & Reel (TR) packaging. SMBJ22A (Meritek) does not specify packaging format. SMBJ22A-13-F is available in Cut Tape (CT) & Digi-Reel® format. Verify packaging availability with your supplier before design finalization.
Q: Does operating temperature range affect substitution compatibility? A: Operating temperature range does not prevent substitution. SMBJ22A-TP extends the maximum temperature to 175°C, providing additional thermal margin. SMBJ22E3/TR13 and SMBJ22AE3/TR13 extend the minimum temperature to -65°C. Select based on your application's thermal requirements.
Q: Are all substitute parts RoHS compliant? A: Yes. All substitute parts listed are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the original SMBJ22-E3/52 environmental specifications.
Q: What is the significance of the "A" designation in SMBJ22A variants? A: The "A" designation indicates a variant within the SMBJ22 base product family. SMBJ22A parts typically feature 35.5V clamping voltage and 16.9A peak pulse current, compared to the original SMBJ22-E3/52 specification of 39.4V clamping and 15.2A. Both variants maintain the same 22V reverse standoff voltage and are electrically compatible for general-purpose transient suppression.
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