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Vishay General Semiconductor - Diodes Division SMB10J20-E3/5B
- Part No.:
- SMB10J20-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J20-E3/5B.pdf
- Description:
- TVS DIODE 20VWM 35.8VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,217
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Product details
Overview
SMB10J20-E3/5B from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for high-energy surge protection on DC power rails and signal lines. It features a 20 V stand-off voltage (VWM), 32.4 V clamping voltage (VC) at 30.9 A peak pulse current (IPPM), and 1000 W peak pulse power (PPPM) with 10/1000 µs waveform. Used to protect MOSFETs, microcontrollers, and sensor interfaces against inductive switching transients in automotive and industrial power supplies.
For engineers reviewing the SMB10J20-E3/5B datasheet, SMB10J20-E3/5B pinout, SMB10J20-E3/5B application, or SMB10J20-E3/5B equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 72 °C/W), RoHS-compliant packaging (E3 suffix), and real-world clamping behavior under standardized surge conditions.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal bias it presents <1 µA leakage at 20 V (VWM), then rapidly avalanches when reverse voltage exceeds its 22.2–24.5 V breakdown range (VBR at 1 mA). Its low incremental surge resistance ensures minimal voltage overshoot during 10/1000 µs transients.
Designed for surface-mount automation and automotive-grade reliability, SMB10J20-E3/5B meets MSL Level 1 per J-STD-020, withstands 260 °C lead-free reflow, and is qualified to AEC-Q101 - confirming suitability for under-hood and ADAS power rail protection where junction temperature may reach 150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 20 V - Maximum continuous reverse voltage before significant leakage; defines operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 22.2–24.5 V at 1 mA - Confirmed avalanche initiation range; ensures reliable turn-on before system damage thresholds. |
| VC (Clamping Voltage) | 32.4 V at 30.9 A IPPM - Measured maximum voltage seen by protected circuit during full-rated 10/1000 µs surge. |
| PPPM (Peak Pulse Power) | 1000 W - Sustained energy absorption capability under standard lightning-surge waveform (IEC 61000-4-5). |
| RθJA | 72 °C/W - Junction-to-ambient thermal resistance on 0.2" × 0.2" copper pads; enables thermal design for 100 W dissipation. |
| TJ max | 150 °C - Maximum allowable junction temperature; supports operation in engine control units and industrial drives. |
| AEC-Q101 Qualified | Yes - Validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD. |
Pinout & Package
DO-214AA (SMB) surface-mount package: molded epoxy case with matte tin-plated leads, cathode indicated by color band on one end. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); compliant with UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line (e.g., ground or return path) in unidirectional configuration. |
| Cathode (banded end) | Reverse-biased clamping terminal | Connected to higher-potential side (e.g., +12 V rail or signal line); conducts surge current to ground when VREV > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile DO-214AA package | Enables high-density PCB layout and compatibility with automated pick-and-place equipment (0.220" × 0.155" footprint). |
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure. |
| 1000 W peak pulse power (10/1000 µs) | Protects against IEC 61000-4-5 Level 4 surges (4 kV line-earth, 2 kV line-line) without derating on standard pads. |
| AEC-Q101 qualification | Validates robustness for automotive powertrain, body control, and infotainment systems requiring zero field failures. |
| RoHS-compliant E3 suffix | Meets JESD201 Class 1A whisker resistance and lead-free soldering compatibility up to 260 °C peak. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump and alternator-induced transients. IC Role / Device Role / Timing Role: Shunt clamping device placed between power rail and chassis ground, activated within nanoseconds of overvoltage event. Use Value: Limits rail voltage to ≤32.4 V during 1000 W surges, preventing damage to downstream 3.3 V/5 V regulators and CAN transceivers. |
Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to PLC analog inputs. IC Role / Device Role / Timing Role: Bidirectional-capable protection element (though SMB10J20-E3/5B is unidirectional, used with series resistor for bidirectional effect) on signal lines exposed to EMI and cable discharge. Use Value: Clamps fast-rising transients (<1 ns rise time) to safe levels while maintaining <1 µA leakage at 20 V, preserving signal integrity. |
| DC Motor Drive Board Protection | Telecom Power Supply Input Stage |
|
Use Scenario: Suppressing inductive kickback from brushed DC motors in factory automation actuators. IC Role / Device Role / Timing Role: Unidirectional TVS placed across motor terminals or H-bridge supply rails to divert flyback energy. Use Value: Absorbs repetitive 1000 W pulses without degradation, validated for >1000 surges per JESD22-A114. |
Use Scenario: Front-end surge suppression on 48 V telecom rectifier outputs feeding base station subsystems. IC Role / Device Role / Timing Role: Primary clamping device upstream of DC-DC converters, sized for 20 V nominal input with 30 % tolerance margin. Use Value: Maintains 20 V stand-off with only 1 µA leakage at TA = 85 °C, minimizing standby power loss in always-on infrastructure. |
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-E3/5B | Same DO-214AA package, identical VWM (20 V), VC = 32.4 V, but rated for 600 W PPPM (vs. 1000 W). | Limited to lower-energy transients (e.g., IEC 61000-4-4 Level 3); insufficient for automotive load-dump events. | Select SMB10J20-E3/5B when full 1000 W surge immunity is required; SMBJ20A-E3/5B suits cost-sensitive consumer power supplies. |
| SMCJ20A-E3/5B | DO-214AB (SMC) package, same VWM/VC, but rated for 1500 W PPPM and RθJA = 35 °C/W. | Higher power handling and better thermal performance, but 2.5× larger footprint (7.11 mm × 6.22 mm). | Choose SMB10J20-E3/5B for space-constrained automotive modules; SMCJ20A-E3/5B where board area allows and thermal margin is critical. |
Compared with SMBJ20A-E3/5B and SMCJ20A-E3/5B, SMB10J20-E3/5B uniquely balances 1000 W surge capacity, AEC-Q101 qualification, and compact DO-214AA footprint - making it optimal for automotive and industrial designs needing high power density without thermal derating penalties.
Availability
SMB10J20-E3/5B is available at Aetrix Electronics and suitable for automotive electronic control units, industrial motor drives, and telecom power supply input stages requiring stable component supply and long-term lifecycle support.
Supply support for SMB10J20-E3/5B 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMB10Jxx series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-power transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where failure modes must be mitigated at the component level.
FAQ
What is the clamping voltage of SMB10J20-E3/5B at its rated peak pulse current?
The SMB10J20-E3/5B has a maximum clamping voltage (VC) of 32.4 V when subjected to its rated peak pulse current (IPPM) of 30.9 A under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in Vishay's datasheet revision 12-Nov-12, ensuring predictable overvoltage limiting for protected circuits.
Is SMB10J20-E3/5B suitable for automotive applications?
Yes, SMB10J20-E3/5B is AEC-Q101 qualified and explicitly rated for automotive use. Its construction includes glass-passivated junctions, MSL Level 1 moisture sensitivity, and validation across temperature cycling, high-temperature operating life, and ESD tests - all documented in Vishay's qualification report for the SMB10Jxx family.
What does the "E3/5B" suffix mean in SMB10J20-E3/5B?
The "E3" suffix indicates RoHS-compliant, commercial-grade construction meeting JESD201 Class 1A whisker resistance, while "5B" specifies packaging in 13-inch diameter plastic tape and reel with 3200 units per reel. This format supports high-volume SMT assembly and ensures consistent lead finish and solderability per J-STD-002.
How does SMB10J20-E3/5B differ from SMBJ20A-E3/5B?
SMB10J20-E3/5B delivers 1000 W peak pulse power (PPPM) versus 600 W for SMBJ20A-E3/5B, while sharing identical VWM (20 V), VC (32.4 V), and DO-214AA package. The higher PPPM rating makes SMB10J20-E3/5B suitable for automotive load-dump protection where SMBJ20A-E3/5B would thermally saturate.
What is the maximum operating temperature for SMB10J20-E3/5B?
The SMB10J20-E3/5B has a maximum junction temperature (TJ) of 150 °C and an operating junction/storage temperature range of –55 °C to +150 °C. This rating is validated per JEDEC standards and supports deployment in under-hood automotive modules and industrial enclosures with elevated ambient temperatures.
SMB10J20-E3/5B 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:
- 35.8V
- Current - Peak Pulse (10/1000µs):
- 27.9A
- 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)
SMB10J20-E3/5B FAQ
1.How can I place an order for SMB10J20-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J20-E3/5B 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 SMB10J20-E3/5B reliable?
The price and inventory of SMB10J20-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J20-E3/5B is usually 5 days.
3.What payment methods are accepted for SMB10J20-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J20-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J20-E3/5B?
SMB10J20-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J20-E3/5B 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 SMB10J20-E3/5B?
For technical support, including SMB10J20-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J20-E3/5B requirements.
6.How does Aetrix verify that SMB10J20-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMB10J20-E3/5B 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 SMB10J20-E3/5B meets industry standards.
7.What is the process for return or replacement of SMB10J20-E3/5B?
All SMB10J20-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J20-E3/5B, 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 SMB10J20-E3/5B part is unused and in its original packaging.
Return procedure for SMB10J20-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J20-E3/5B Tags
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