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Vishay General Semiconductor - Diodes Division SMB10J20AHE3_A/I
- Part No.:
- SMB10J20AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J20AHE3_A/I.pdf
- Description:
- TVS DIODE 20VWM 32.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,930
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Product details
Overview
SMB10J20AHE3_A/I 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 at 30.9 A peak pulse current. It is AEC-Q101 qualified and used to protect MOSFETs, ICs, and sensor signal lines in automotive powertrain and body electronics.
For engineers reviewing the SMB10J20AHE3_A/I datasheet, SMB10J20AHE3_A/I pinout, SMB10J20AHE3_A/I application, or SMB10J20AHE3_A/I equivalent, this page delivers verified electrical specs, automotive-grade qualification status, thermal resistance data, clamping behavior under surge, and real-world protection use cases - all confirmed from Vishay's official document #88422 (Rev. 09-Jan-2024).
Technical Context
This device operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its 22.2–24.5 V breakdown range (VBR at 1 mA). Its low incremental surge resistance and fast response time enable effective suppression of ESD and load-switching transients per IEC 61000-4-2/4-4/4-5.
Thermal design is supported by RθJA = 72 °C/W (typ.) and RθJL = 20 °C/W (typ.), with maximum junction temperature rated at +150 °C. The matte tin-plated leads meet J-STD-002 solderability and JESD22-B102 whisker testing (Class 2).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 20 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal line bias margin. |
| 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 (10/1000 µs); determines maximum protected-circuit overvoltage. |
| PPPM | 1000 W - Peak pulse power handling capability; enables robust protection against ISO 7637-2 Pulse 1/2a/5a surges. |
| IFSM | 100 A - Non-repetitive forward surge current rating (8.3 ms half-sine); supports inrush tolerance during system startup. |
| TJ max. | +150 °C - Maximum junction temperature; allows operation in under-hood automotive environments. |
| AEC-Q101 | Qualified - Certified for automotive electronic systems per stress-test requirements including HTOL, TCT, and ESD. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with cathode band marking on one end. Molding compound meets UL 94 V-0; terminals are matte tin-plated for reliable soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / low-side reference | Connected to ground or low-voltage rail in unidirectional TVS configuration; defines polarity-sensitive placement. |
| Cathode | Reverse-biased clamping node | Connected to protected line (e.g., CAN_H, LIN, sensor supply); conducts during overvoltage to shunt energy to ground. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive powertrain, chassis, and body control modules requiring long-term reliability under thermal cycling and vibration. |
| 1000 W peak pulse power (10/1000 µs) | Withstands high-energy transients such as ISO 7637-2 Pulse 5a (load dump) without degradation when mounted per recommended pad layout. |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes overvoltage stress on downstream ICs - e.g., protects 24 V-rated microcontrollers during 32.4 V clamped events. |
| MSL Level 1 (260 °C peak reflow) | Enables standard lead-free SMT assembly without moisture-related popcorn failure; no pre-bake required. |
| Glass-passivated junction | Ensures stable VBR and leakage performance across temperature (-55 °C to +150 °C) and lifetime in harsh environments. |
Applications
| Automotive Power Supply Protection | CAN Bus Line Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V power rails in engine control units (ECUs) against load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input filter capacitor to clamp surges before LDOs or DC-DC converters. Use Value: Limits rail voltage to ≤32.4 V during 1000 W pulses, preventing damage to 36 V-rated regulators and enabling compliance with ISO 16750-2. |
Use Scenario: Safeguarding high-speed CAN FD transceivers (e.g., TCAN1042) from ESD and coupled noise on differential bus lines. IC Role / Device Role / Timing Role: Dual-SMB layout with one SMB10J20AHE3_A/I on CAN_H and another on CAN_L, referenced to ground. Use Value: Clamps common-mode transients to <33 V while maintaining <100 pF junction capacitance, preserving signal integrity up to 5 Mbps. |
| Industrial Sensor Signal Conditioning | Automotive Body Electronics |
Use Scenario: Shielding analog outputs (e.g., 4–20 mA current loop drivers) in pressure or temperature sensors exposed to motor switching noise. IC Role / Device Role / Timing Role: Placed across output terminals to divert induced spikes away from precision op-amps and ADC front-ends. Use Value: 1.0 µA max reverse leakage at 20 V ensures minimal offset error; 32.4 V clamping prevents saturation of 24 V-supplied signal chains. |
Use Scenario: Protecting door module MCUs and LED drivers from alternator ripple and relay coil kickback in smart lighting systems. IC Role / Device Role / Timing Role: Mounted at PCB entry points of 12 V supply inputs to interior lighting controllers and seat control units. Use Value: AEC-Q101 qualification guarantees 15-year field life; 100 A IFSM rating accommodates repeated inrush during bulb hot-swap events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20A-E3/52 | Same SMB package, 20 V VWM, but commercial-grade (non-AEC-Q101); RθJA = 75 °C/W (vs. 72 °C/W). | Lacks automotive qualification; suitable for industrial or consumer power supplies where AEC-Q101 is not mandated. | Select SMBJ20A-E3/52 only if automotive reliability certification is unnecessary and cost sensitivity outweighs qualification needs. |
| 1.5SMC20A | Higher-power SMC package (1500 W PPPM), same 20 V VWM, but larger footprint (7.11 × 6.22 mm vs. 4.57 × 3.94 mm) and non-AEC-Q101. | Used where higher surge margin is needed and board space permits larger case; not drop-in compatible due to different pad layout. | Choose 1.5SMC20A only when >1000 W surge immunity is required and PCB redesign is acceptable. |
Compared with SMBJ20A-E3/52 and 1.5SMC20A, SMB10J20AHE3_A/I uniquely combines AEC-Q101 qualification, SMB footprint, and 1000 W rating - making it the only option among the three validated for automotive ECU-level deployment without layout change or derating.
Availability
SMB10J20AHE3_A/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, CAN/LIN bus nodes, and body electronics requiring stable component supply with full traceability and long-lifecycle support.
Supply support for SMB10J20AHE3_A/I 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, power density, and automotive-grade validation.
The SMB10JxxA series belongs to Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in space-constrained automotive and industrial systems where AEC-Q101 compliance and consistent clamping performance are mandatory.
FAQ
What is the clamping voltage of SMB10J20AHE3_A/I at its rated peak pulse current?
The SMB10J20AHE3_A/I has a maximum clamping voltage (VC) of 32.4 V when subjected to its rated peak pulse current of 30.9 A under a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures predictable overvoltage limiting for downstream 24 V-rated components. The SMB10J20AHE3_A/I maintains this clamping performance across its qualified operating temperature range.
Is SMB10J20AHE3_A/I suitable for protecting CAN FD bus lines?
Yes, SMB10J20AHE3_A/I is suitable for CAN FD bus protection due to its low junction capacitance (<100 pF at 0 V), 32.4 V clamping level, and fast response time. When placed on both CAN_H and CAN_L lines with proper grounding, it suppresses ESD and coupled transients without degrading signal integrity up to 5 Mbps. The SMB10J20AHE3_A/I's AEC-Q101 qualification further validates its use in automotive network nodes.
Does SMB10J20AHE3_A/I require special PCB layout considerations?
Yes - Vishay specifies mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 1000 W pulse power and thermal performance. Inadequate copper area increases RθJA, risking thermal runaway during repeated surges. The SMB10J20AHE3_A/I datasheet provides exact pad dimensions and recommends minimum 1 oz. copper thickness for optimal heat dissipation.
How does the HE3 suffix affect SMB10J20AHE3_A/I's specifications?
HE3 denotes RoHS-compliant construction with AEC-Q101 qualification - distinguishing it from commercial-grade variants like E3 or M3. This means SMB10J20AHE3_A/I undergoes extended stress testing (HTOL, TCT, ESD) and is approved for automotive applications. All electrical parameters (VWM, VBR, VC, PPPM) remain identical to non-HE3 versions; only qualification scope and material compliance differ.
Can SMB10J20AHE3_A/I replace SMBJ20A in an existing design?
SMB10J20AHE3_A/I is physically and electrically pin-compatible with SMBJ20A in the SMB package, sharing identical VWM (20 V), VBR (22.2–24.5 V), and VC (32.4 V). However, SMB10J20AHE3_A/I adds AEC-Q101 qualification and tighter thermal resistance (72 vs. 75 °C/W). No PCB changes are needed, but qualification documentation must be updated to reflect automotive-grade validation for SMB10J20AHE3_A/I.
SMB10J20AHE3_A/I 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):
- 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_A/I FAQ
1.How can I place an order for SMB10J20AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J20AHE3_A/I 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_A/I reliable?
The price and inventory of SMB10J20AHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J20AHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMB10J20AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J20AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J20AHE3_A/I?
SMB10J20AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J20AHE3_A/I 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_A/I?
For technical support, including SMB10J20AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J20AHE3_A/I requirements.
6.How does Aetrix verify that SMB10J20AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMB10J20AHE3_A/I 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_A/I meets industry standards.
7.What is the process for return or replacement of SMB10J20AHE3_A/I?
All SMB10J20AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J20AHE3_A/I, 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_A/I part is unused and in its original packaging.
Return procedure for SMB10J20AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J20AHE3_A/I Tags
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