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Vishay General Semiconductor - Diodes Division SMB10J22-E3/52
- Part No.:
- SMB10J22-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J22-E3/52.pdf
- Description:
- TVS DIODE 22VWM 39.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,001
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Product details
Overview
SMB10J22-E3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for high-energy surge protection 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 clamping voltage (VC) at 28.2 A peak pulse current (IPPM), and 1000 W peak pulse power (PPPM) with 10/1000 µs waveform. It is widely deployed in automotive power supply rails and industrial sensor interfaces to suppress ESD and load-dump transients.
For engineers reviewing the SMB10J22-E3/52 datasheet, SMB10J22-E3/52 pinout, SMB10J22-E3/52 application, or SMB10J22-E3/52 equivalent, key selection criteria include clamping performance under 10/1000 µs surges, unidirectional polarity compatibility with DC-biased lines, AEC-Q101 qualification for automotive use, and thermal resistance (RθJA = 72 °C/W) for board-level thermal design.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR, it avalanches to divert surge current away from downstream ICs. Its glass-passivated junction ensures stable leakage (<1 µA at VWM) and fast response (<1 ns), while low incremental surge resistance enables effective clamping at high IPPM.
The device is rated for -55 °C to +150 °C operating junction temperature, meets MSL Level 1 per J-STD-020 (peak reflow 260 °C), and uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards. The E3 suffix confirms RoHS compliance and JESD 201 Class 1A whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - maximum continuous reverse operating voltage before conduction begins; defines safe DC bias margin. |
| VBR (min/max) | 24.4 V / 26.9 V at IT = 1 mA - precise avalanche onset range; ensures consistent triggering across production lots. |
| VC @ IPPM | 35.5 V at 28.2 A (10/1000 µs) - clamping voltage during worst-case surge; determines protected circuit's maximum stress level. |
| PPPM | 1000 W - peak pulse power handling capacity; supports IEC 61000-4-5 Level 4 (4 kV) surge immunity in properly designed layouts. |
| RθJA | 72 °C/W - junction-to-ambient thermal resistance on 0.2" × 0.2" copper pads; guides PCB copper area requirements for sustained surge duty. |
| TJ max. | 150 °C - maximum junction temperature; sets upper limit for thermal design margin under repetitive surge conditions. |
| Polarity | Unidirectional - cathode-banded; suitable for DC-biased lines where reverse conduction must be blocked during normal operation. |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, low-profile plastic case with molded cathode band marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); terminals are matte tin-plated leads compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of protected line (e.g., GND or return path); forms shunt path during overvoltage. |
| Cathode | Avalanche conduction terminal | Marked with color band; connected to higher-potential side (e.g., VCC or signal line); conducts surge current to ground when VAK > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity testing, and mechanical shock - required for engine control, body electronics, and ADAS modules. |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage (<1 µA at VWM) over lifetime and temperature - critical for low-power sensor interfaces. |
| Low profile DO-214AA package | Enables automated placement and high-density PCB layouts while maintaining 1000 W surge capability - reduces assembly cost and board space vs. larger packages. |
| MSL Level 1 rating | Allows unlimited floor life and single reflow at peak 260 °C - eliminates baking requirements and simplifies SMT manufacturing flow. |
| JESD 201 Class 1A whisker resistance | Prevents tin whisker growth under thermal stress - essential for long-life automotive and industrial applications where field failure is unacceptable. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 24 V battery-fed ECUs against ISO 7637-2 load dump transients (up to 60 V, 100 ms). IC Role / Device Role: Shunt clamping element placed between VBAT and chassis ground. Use Value: Limits rail voltage to ≤35.5 V during 10/1000 µs surges, preventing damage to MCU power supplies and CAN transceivers. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in factory automation PLCs. IC Role / Device Role: Bidirectional protection on 0–10 V or 4–20 mA output lines exposed to cable ESD and inductive switching noise. Use Value: Clamps transients to <35.5 V while maintaining <1 µA leakage at 22 V, preserving signal accuracy and ADC resolution. |
| DC-DC Converter Input Stage | Motor Drive Gate Driver Supply |
|
Use Scenario: Input surge suppression for 24 V input buck converters powering infotainment systems. IC Role / Device Role: Primary front-end TVS on VIN rail upstream of EMI filter and converter IC. Use Value: Absorbs 1000 W pulses without degradation, enabling compliance with CISPR 25 Class 5 conducted emissions limits during surge events. |
Use Scenario: Protecting isolated gate driver supplies (e.g., 15 V) in BLDC motor inverters from cross-talk and shoot-through induced spikes. IC Role / Device Role: Unidirectional clamp referenced to local gate driver ground. Use Value: Fast <1 ns response prevents false turn-on of MOSFETs during high dV/dt transients, improving system robustness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22A-E3/52 | Same DO-214AA package, identical VWM (22 V), VBR (24.4–26.9 V), and VC (35.5 V); differs only in part numbering convention (SMBJ vs. SMB10J series). | No functional difference; both rated for 1000 W PPPM and AEC-Q101. | Select SMBJ22A-E3/52 if sourcing from distributors listing SMBJ-series inventory; electrically and mechanically interchangeable. |
| 1.5SMC22A | DO-214AB (SMC) package - larger footprint (7.11 mm × 6.22 mm), higher RθJA (50 °C/W), same electrical specs but 1500 W PPPM rating. | Better thermal performance under repetitive surges; requires more PCB area and may not fit space-constrained automotive modules. | Choose 1.5SMC22A only when sustained surge duty cycle exceeds SMB10J22-E3/52's thermal limits; verify layout clearance for larger SMC outline. |
Compared with SMBJ22A-E3/52, SMB10J22-E3/52 offers identical protection performance in the same compact SMB footprint; versus 1.5SMC22A, it trades higher peak power for smaller size and tighter thermal constraints - optimal for space-limited automotive ECUs where 1000 W surge capacity suffices.
Availability
SMB10J22-E3/52 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and DC-DC converter input stage surge suppression requiring stable component supply and AEC-Q101 assurance.
Supply support for SMB10J22-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, efficiency, and application-specific optimization.
The SMB10J series belongs to Vishay's TRANSZORB® TVS portfolio, engineered specifically for high-power-density, automotive-grade transient suppression in harsh environments where AEC-Q101 validation and stable clamping performance are mandatory.
FAQ
What is the clamping voltage of SMB10J22-E3/52 under a 10/1000 µs surge?
The SMB10J22-E3/52 has a maximum clamping voltage (VC) of 35.5 V when subjected to its rated peak pulse current of 28.2 A with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 standards and defines the upper voltage limit imposed on protected circuits during surge events. Designers use this parameter to verify that downstream components remain within their absolute maximum ratings during transient conditions.
Is SMB10J22-E3/52 suitable for automotive applications?
Yes, SMB10J22-E3/52 is AEC-Q101 qualified and explicitly rated for automotive use, including engine control units, body electronics, and ADAS modules. Its construction - glass-passivated junction, MSL Level 1 reflow compatibility, JESD 201 Class 1A whisker resistance, and -55 °C to +150 °C operating range - meets stringent automotive reliability requirements. The E3 suffix further confirms RoHS compliance for modern vehicle platforms.
How does the SMB10J22-E3/52 differ from bi-directional variants like SMB8J22CA?
SMB10J22-E3/52 is unidirectional, featuring a cathode band and conducting only in reverse bias above VBR, making it ideal for DC-biased lines such as power rails. In contrast, SMB8J22CA is bi-directional with no polarity marking and clamps surges of either polarity - suited for AC-coupled or floating signal lines. Their clamping voltages (35.5 V vs. 35.5 V) and VWM (22 V) match, but SMB8J22CA has lower PPPM (800 W vs. 1000 W) due to symmetrical structure limitations.
What is the thermal resistance of SMB10J22-E3/52, and how does it affect PCB layout?
SMB10J22-E3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 72 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value directly impacts PCB copper area requirements: reducing pad size increases RθJA, risking thermal runaway during repetitive surges. For reliable operation under frequent transients, designers must maintain minimum pad dimensions and consider internal ground planes to enhance heat dissipation.
Can SMB10J22-E3/52 replace older SMBJ22A parts in existing designs?
Yes, SMB10J22-E3/52 is a direct replacement for SMBJ22A in both electrical and mechanical terms: identical DO-214AA package, matching VWM (22 V), VBR (24.4–26.9 V), VC (35.5 V), PPPM (1000 W), and AEC-Q101 qualification. The "10" in SMB10J denotes enhanced surge robustness per Vishay's internal grading, but no PCB or schematic changes are needed - the SMB10J22-E3/52 maintains full drop-in compatibility with legacy SMBJ22A footprints and performance expectations.
SMB10J22-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):
- 25.4A
- Power - Peak Pulse:
- 1000W (1kW)
- 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 (SMB)
SMB10J22-E3/52 FAQ
1.How can I place an order for SMB10J22-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J22-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 SMB10J22-E3/52 reliable?
The price and inventory of SMB10J22-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 SMB10J22-E3/52 is usually 5 days.
3.What payment methods are accepted for SMB10J22-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J22-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J22-E3/52?
SMB10J22-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J22-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 SMB10J22-E3/52?
For technical support, including SMB10J22-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J22-E3/52 requirements.
6.How does Aetrix verify that SMB10J22-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMB10J22-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 SMB10J22-E3/52 meets industry standards.
7.What is the process for return or replacement of SMB10J22-E3/52?
All SMB10J22-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J22-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 SMB10J22-E3/52 part is unused and in its original packaging.
Return procedure for SMB10J22-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J22-E3/52 Tags
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