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Vishay General Semiconductor - Diodes Division SMB10J20AHE3/52
- Part No.:
- SMB10J20AHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J20AHE3/52.pdf
- Description:
- TVS DIODE 20VWM 32.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,555
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Product details
Overview
SMB10J20AHE3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection with 1000 W peak pulse power (10/1000 µs), 20 V stand-off voltage (VWM), and 32.4 V clamping voltage (VC) at 30.9 A peak pulse current. It serves as primary overvoltage protection for automotive sensor signal lines, MOSFET gate drivers, and microcontroller I/O interfaces exposed to inductive switching transients.
For engineers reviewing the SMB10J20AHE3/52 datasheet, SMB10J20AHE3/52 pinout, SMB10J20AHE3/52 application, or SMB10J20AHE3/52 equivalent, key selection criteria include AEC-Q101 qualification, unidirectional polarity with cathode band marking, low incremental surge resistance, and compatibility with automated SMT placement on standard 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a clamping device triggered by reverse-biased avalanche breakdown above its 22.2–24.5 V breakdown voltage (VBR at 1 mA). Its glass-passivated junction ensures stable leakage performance (<1.0 µA at 20 V) and fast response time (<1 ns), enabling effective suppression of ESD and lightning-induced surges per IEC 61000-4-2/4-5.
Thermally, it features a junction-to-lead thermal resistance of 20 °C/W and maximum operating junction temperature of +150 °C, supporting reliable operation in under-hood automotive environments when mounted per recommended pad layout. The device meets MSL Level 1 and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 20 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal line bias range. |
| VBR min/max | 22.2 V / 24.5 V - Breakdown occurs within this range at 1 mA test current; ensures predictable turn-on threshold. |
| VC @ IPPM | 32.4 V - Clamping voltage at 30.9 A peak pulse current; limits protected circuit voltage during 10/1000 µs surge. |
| PPPM | 1000 W - Peak pulse power handling capability with 10/1000 µs waveform; supports high-energy transient absorption. |
| ID @ VWM | <1.0 µA - Reverse leakage at stand-off voltage; minimizes quiescent power loss and signal distortion. |
| TJ max | +150 °C - Maximum junction temperature; enables use in automotive engine control units and powertrain modules. |
| AEC-Q101 | Qualified - Certified for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD22-B102. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional configuration. |
| Cathode | Avalanche clamping terminal | Marked with band; connected to protected line (e.g., CAN_H, LIN, sensor output) to clamp positive transients to VWM + VC. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity stress. |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, chassis, and ADAS applications requiring zero-defect field performance. |
| Low profile SMB package | Enables high-density PCB layouts and compatibility with standard pick-and-place equipment for automated manufacturing. |
| MSL Level 1 rating | Allows unlimited floor life and reflow up to 260 °C peak without moisture-related damage. |
| 1000 W peak pulse power | Provides robust protection against ISO 7637-2 Pulse 1/2a/5a transients and IEC 61000-4-5 combination wave surges. |
Applications
| Automotive Sensor Protection | Microcontroller I/O Protection |
|---|---|
Use Scenario: Protecting analog outputs of pressure, temperature, or position sensors in engine control modules from load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between sensor output and MCU ADC input to limit voltage excursion to ≤32.4 V. Use Value: Prevents ADC saturation and input-stage latch-up while maintaining signal integrity below 20 V nominal operating range. | Use Scenario: Safeguarding GPIO, UART, or SPI pins of automotive-grade MCUs (e.g., Infineon TC3xx, NXP S32K) against ESD and board-level surges. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected from I/O line to ground, activated only during transients >22.2 V. Use Value: Enables direct interface with external connectors without additional series impedance, preserving signal rise/fall times. |
| MOSFET Gate Driver Protection | Infotainment Power Line Conditioning |
Use Scenario: Shielding high-side/low-side gate drivers in BLDC motor controllers from cross-conduction-induced voltage spikes. IC Role / Device Role / Timing Role: TVS placed across driver output and ground to clamp gate-source overvoltage during shoot-through events. Use Value: Prevents unintended MOSFET turn-on and gate oxide damage while adding <0.5 ns propagation delay. | Use Scenario: Suppressing conducted noise on 12 V power rails feeding infotainment head units and display modules. IC Role / Device Role / Timing Role: Unidirectional TVS installed at power entry point to clamp positive surges before DC/DC converters. Use Value: Maintains stable 12 V rail during jump-start events and alternator load dump, avoiding system reset or brownout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20A-E3/52 | Same SMB package, identical VWM (20 V) and VC (32.4 V), but rated for 600 W PPPM (vs. 1000 W). | Limited to lower-energy transients (e.g., IEC 61000-4-2 ±8 kV contact); insufficient for ISO 7637-2 Pulse 5a. | Select SMB10J20AHE3/52 where full 1000 W surge immunity is required in automotive power circuits. |
| SMCJ20AHE3/52 | Higher-power SMC (DO-214AB) package with same VWM/VC but 1500 W PPPM and larger thermal mass. | Requires larger PCB footprint (7.11 mm × 6.22 mm vs. 4.57 mm × 3.94 mm); better for high-temperature ambient zones. | Choose SMB10J20AHE3/52 for space-constrained modules where SMB footprint and AEC-Q101 compliance are mandatory. |
Compared with SMBJ20A-E3/52 and SMCJ20AHE3/52, SMB10J20AHE3/52 uniquely balances 1000 W surge capability, AEC-Q101 qualification, and compact SMB packaging-making it optimal for automotive body electronics and ADAS sensor nodes where board area and reliability are co-constrained.
Availability
SMB10J20AHE3/52 is available at Aetrix Electronics and suitable for automotive sensor protection, microcontroller I/O hardening, and MOSFET gate driver safeguarding requiring stable component supply across production lifecycles.
Supply support for SMB10J20AHE3/52 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, and protection devices with emphasis on automotive, industrial, and computing applications.
The SMB10JxxA series belongs to Vishay's TRANSZORB® high-power TVS family, engineered specifically for AEC-Q101-compliant automotive systems needing robust, low-leakage, fast-response transient suppression in space-limited layouts.
FAQ
What is the clamping voltage of SMB10J20AHE3/52 at its rated peak pulse current?
The SMB10J20AHE3/52 has a maximum clamping voltage (VC) of 32.4 V at its rated peak pulse current (IPPM) of 30.9 A under a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 standards and guarantees that protected downstream circuitry will not experience voltages exceeding 32.4 V during specified surge events, preserving IC integrity in automotive and industrial applications.
Is SMB10J20AHE3/52 qualified for automotive use?
Yes, SMB10J20AHE3/52 is AEC-Q101 qualified, meaning it has passed rigorous stress tests-including temperature cycling, high-temperature reverse bias (HTRB), and ESD-required for automotive electronic components. The "HE3" suffix explicitly denotes RoHS-compliant and AEC-Q101-qualified status, making SMB10J20AHE3/52 suitable for engine control units, ADAS sensors, and body electronics.
What is the standoff voltage and breakdown voltage range for SMB10J20AHE3/52?
The SMB10J20AHE3/52 has a stand-off voltage (VWM) of 20 V and a breakdown voltage (VBR) range of 22.2 V to 24.5 V at 1 mA test current. This 2.2–4.5 V margin between VWM and VBR ensures reliable non-conduction during normal operation while guaranteeing rapid, repeatable avalanche triggering during overvoltage events-critical for protecting sensitive 24 V automotive logic interfaces.
How does the SMB package of SMB10J20AHE3/52 compare to SMC in terms of thermal performance?
The SMB package of SMB10J20AHE3/52 has a typical junction-to-lead thermal resistance (RθJL) of 20 °C/W, compared to ~15 °C/W for the larger SMC package. While SMC offers superior heat dissipation for sustained surge duty, SMB10J20AHE3/52 achieves sufficient thermal performance for single-event transients when mounted on 5.0 mm × 5.0 mm copper pads-enabling smaller footprints without compromising AEC-Q101 reliability in most automotive signal-line applications.
Can SMB10J20AHE3/52 be used in bidirectional configurations?
No, SMB10J20AHE3/52 is a unidirectional TVS diode, identifiable by its cathode band marking. For bidirectional protection (e.g., AC lines or differential buses), Vishay offers the SMB8J20CA variant with symmetrical clamping in both polarities. Using SMB10J20AHE3/52 in bidirectional roles would result in forward conduction during negative transients, potentially damaging the device or failing to protect the circuit.
SMB10J20AHE3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 20V
- Voltage - Breakdown (Min):
- 22.2V
- Voltage - Clamping (Max) @ Ipp:
- 32.4V
- Current - Peak Pulse (10/1000µs):
- 30.9A
- Power - Peak Pulse:
- 1000W (1kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB10J20AHE3/52 FAQ
1.How can I place an order for SMB10J20AHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J20AHE3/52 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 SMB10J20AHE3/52 reliable?
The price and inventory of SMB10J20AHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J20AHE3/52 is usually 5 days.
3.What payment methods are accepted for SMB10J20AHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J20AHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J20AHE3/52?
SMB10J20AHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J20AHE3/52 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 SMB10J20AHE3/52?
For technical support, including SMB10J20AHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J20AHE3/52 requirements.
6.How does Aetrix verify that SMB10J20AHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMB10J20AHE3/52 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 SMB10J20AHE3/52 meets industry standards.
7.What is the process for return or replacement of SMB10J20AHE3/52?
All SMB10J20AHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J20AHE3/52, 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 SMB10J20AHE3/52 part is unused and in its original packaging.
Return procedure for SMB10J20AHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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