My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBJ22-E3/52
;;2.jpg)
- Part No.:
- SMBJ22-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ22-E3/52.pdf
- Description:
- TVS DIODE 22VWM 39.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,287
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ22-E3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 22 V stand-off voltage (VWM), 24.4–26.9 V breakdown voltage (VBR) at 1 mA, 35.5 V maximum clamping voltage (VC) at 16.9 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed for surge protection of MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the SMBJ22-E3/52 datasheet, SMBJ22-E3/52 pinout, SMBJ22-E3/52 application, or SMBJ22-E3/52 equivalent, key selection criteria include unidirectional polarity, 1.0 µA max reverse leakage at VWM, 150 °C max junction temperature, and RoHS-compliant matte tin-plated leads suitable for J-STD-002 soldering.
Technical Context
This TVS diode operates as a voltage-clamping device in parallel with protected circuitry, entering avalanche conduction when transient voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, enabling fast response (<1 ns) to ESD and lightning-induced surges.
The SMBJ22-E3/52 is rated for 100 A non-repetitive forward surge current (IFSM) and exhibits a thermal resistance of 100 °C/W (junction-to-ambient) on standard 0.2" × 0.2" copper pads. Its MSL Level 1 rating supports lead-free reflow up to 260 °C peak without preconditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 24.4 V / 26.9 V at 1 mA - Confirmed breakdown range defining reliable avalanche onset |
| VC @ IPPM | 35.5 V at 16.9 A - Clamped voltage during 600 W 10/1000 µs transient, limiting stress on downstream ICs |
| IPPM | 16.9 A - Peak pulse current capability under standardized surge waveform |
| ID @ VWM | ≤1.0 µA - Ultra-low reverse leakage preserves signal integrity and battery life in standby |
| TJ max | +150 °C - Enables operation in high-temperature industrial environments without derating |
| Package | SMB (DO-214AA) - Low-profile SMT footprint (5.21 mm × 4.06 mm) compatible with automated placement |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional polarity with cathode band marking. Dimensions: 5.21 mm × 4.06 mm × 2.20 mm (L × W × H); matte tin-plated leads meet J-STD-002 solderability requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to ground or low-impedance return plane; carries full surge current during clamping |
| Cathode | Protected line connection / voltage reference node | Connected to the line being protected (e.g., 24 V rail or sensor output); defines clamping reference |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Supports robust immunity to IEC 61000-4-5 Level 4 surges (4 kV line-earth) without degradation |
| Glass passivated junction | Ensures stable VBR over temperature and lifetime; eliminates parameter drift in harsh environments |
| MSL Level 1 (260 °C peak) | Enables single-pass lead-free reflow without moisture sensitivity concerns or baking requirements |
| RoHS-compliant, commercial grade (E3 suffix) | Meets global environmental compliance; suitable for consumer, industrial, and telecom end equipment |
| Low profile SMB package | Reduces PCB real estate vs. SMA/SMB alternatives while maintaining thermal performance on 5 mm² pads |
Applications
| Industrial Power Supply Protection | Automotive Sensor Interface Protection |
|---|---|
Use Scenario: 24 V DC input rail in PLC I/O modules exposed to inductive switching transients from solenoid drivers. IC Role / Device Role / Timing Role: Unidirectional TVS placed across input terminals to clamp positive-going surges before they reach upstream DC-DC converter. Use Value: Limits transient voltage to ≤35.5 V, preventing damage to 36 V-rated input capacitors and controller ICs. |
Use Scenario: LIN bus signal line in automotive cabin sensors (e.g., seat occupancy, ambient light) subjected to load dump coupling. IC Role / Device Role / Timing Role: TVS connected between LIN line and chassis ground to absorb coupled transients while preserving signal rise time. Use Value: Sub-1 ns response and <1.0 µA leakage maintain LIN timing integrity and reduce quiescent current in always-on systems. |
| Telecom Equipment AC/DC Front-End | Consumer Appliance Motor Drive Protection |
Use Scenario: Secondary-side 12 V bias supply in PoE-powered switches, subject to cross-coupled surges from Ethernet port transients. IC Role / Device Role / Timing Role: SMBJ22-E3/52 placed across 12 V output to suppress secondary-side spikes induced by primary-side MOV clamping. Use Value: 22 V VWM allows safe operation above nominal 12 V rail while clamping at 35.5 V - well below typical 40 V regulator input limits. |
Use Scenario: Gate drive supply line of BLDC motor controller in smart washing machines, where back-EMF spikes threaten gate drivers. IC Role / Device Role / Timing Role: TVS installed between gate driver VDD and GND to shunt inductive kickback energy away from sensitive CMOS inputs. Use Value: 16.9 A IPPM and 35.5 V VC ensure gate driver ICs survive repeated commutation events without latch-up or oxide rupture. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22A-E3/52 | Same electrical specs and package; identical marking code "BX" per Vishay datasheet Table 1 | No functional difference - "SMBJ22A-E3/52" is the standardized base ordering code; "SMBJ22-E3/52" is legacy variant with identical performance | Select SMBJ22A-E3/52 for new designs to align with current Vishay documentation and inventory planning |
| P6SMB22A | Same SMB package, 22 V VWM, but lower 600 W rating applies only to 10/1000 µs waveform; higher VC = 37.5 V at same IPPM | Less effective clamping margin for 24 V systems near upper rail limit; requires verification against system VMAX derating | Use only if SMBJ22-E3/52 is unavailable; verify 37.5 V clamping does not exceed downstream component ratings |
Compared with SMBJ22A-E3/52, the SMBJ22-E3/52 offers identical protection performance but may reflect older internal revision coding; compared with P6SMB22A, it delivers tighter clamping (35.5 V vs. 37.5 V) and superior surge handling margin for 24 V industrial rails.
Availability
SMBJ22-E3/52 is available at Aetrix Electronics and suitable for industrial power supplies, automotive sensor interfaces, telecom front-end circuits, and consumer appliance motor drives requiring stable component supply and long-term obsolescence management.
Supply support for SMBJ22-E3/52 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, precision, and application-specific optimization.
The SMBJ series is engineered for high-energy transient suppression in space-constrained SMT applications, targeting industrial automation, automotive subsystems, and infrastructure equipment where robustness and repeatable clamping are critical.
FAQ
What is the polarity configuration of the SMBJ22-E3/52?
The SMBJ22-E3/52 is a unidirectional TVS diode, meaning it conducts only during positive voltage transients relative to its cathode terminal. The black band on the SMB package identifies the cathode end, and the device blocks reverse voltage up to 22 V (VWM) while clamping forward surges above ~24.4 V. This configuration is ideal for DC power rail protection where polarity is fixed.
Does the SMBJ22-E3/52 meet automotive qualification standards?
The SMBJ22-E3/52 itself is RoHS-compliant commercial-grade (E3 suffix) and not AEC-Q101 qualified. For automotive use, Vishay specifies the HE3 variant (e.g., SMBJ22HE3), which adds AEC-Q101 qualification and extended temperature validation. Engineers must select SMBJ22HE3 or SMBJ22HM3 for under-hood or safety-critical vehicle applications.
What is the maximum clamping voltage of the SMBJ22-E3/52 under surge conditions?
The SMBJ22-E3/52 has a maximum clamping voltage (VC) of 35.5 V at 16.9 A peak pulse current (IPPM) using the standardized 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and represents the upper bound of voltage seen by protected circuitry during worst-case surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Can the SMBJ22-E3/52 be used in bidirectional signal line protection?
No - the SMBJ22-E3/52 is unidirectional only. For bidirectional protection (e.g., RS-485, CAN, or AC-coupled signals), Vishay specifies the CA-suffixed variant (e.g., SMBJ22CA). Using SMBJ22-E3/52 on bidirectional lines risks reverse conduction failure or inadequate clamping during negative transients, as it lacks symmetrical breakdown characteristics.
What is the thermal resistance and recommended pad layout for SMBJ22-E3/52?
The SMBJ22-E3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain reliability at full 600 W pulse rating, designers must implement these pad dimensions and avoid excessive trace length or isolation that increases thermal impedance.
SMBJ22-E3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- 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
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ22-E3/52 FAQ
1.How can I place an order for SMBJ22-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ22-E3/52 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SMBJ22-E3/52 reliable?
The price and inventory of SMBJ22-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ22-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ22-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ22-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ22-E3/52?
SMBJ22-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ22-E3/52 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SMBJ22-E3/52?
For technical support, including SMBJ22-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ22-E3/52 requirements.
6.How does Aetrix verify that SMBJ22-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ22-E3/52 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SMBJ22-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ22-E3/52?
All SMBJ22-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ22-E3/52, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SMBJ22-E3/52 part is unused and in its original packaging.
Return procedure for SMBJ22-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ22-E3/52 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
