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Vishay General Semiconductor - Diodes Division SMB10J12-E3/5B
- Part No.:
- SMB10J12-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J12-E3/5B.pdf
- Description:
- TVS DIODE 12VWM 22VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,670
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Product details
Overview
SMB10J12-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 power and signal lines. It features a 12 V stand-off voltage (VWM), 13.3–14.7 V breakdown voltage (VBR) at 1 mA, 19.9 V clamping voltage (VC) at 50.3 A peak pulse current (IPPM), and 1000 W peak pulse power (PPPM) with 10/1000 µs waveform.
For engineers reviewing the SMB10J12-E3/5B datasheet, SMB10J12-E3/5B pinout, SMB10J12-E3/5B application, or SMB10J12-E3/5B equivalent, this device is selected for automotive-grade transient suppression where AEC-Q101 qualification, low clamping ratio, and robust 1000 W surge handling are required in space-constrained surface-mount designs.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 MΩ leakage at 12 V), but triggers into low-impedance conduction when transients exceed its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance and long-term reliability under repetitive surge stress.
The device complies with ANSI/IEEE C62.35 standards for surge suppression and meets J-STD-020 MSL Level 1 (260 °C peak reflow), enabling compatibility with standard SMT assembly processes. Its thermal resistance (RθJA = 72 °C/W) supports operation up to 150 °C junction temperature in properly laid-out PCB environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 12 V - Maximum continuous reverse operating voltage before significant leakage; defines safe operating margin below clamping onset. |
| VBR (Breakdown Voltage) | 13.3–14.7 V at 1 mA - Tight tolerance range ensures predictable turn-on timing across production lots. |
| VC (Clamping Voltage) | 19.9 V at IPPM = 50.3 A - Limits downstream voltage during 1000 W surge, protecting 15–20 V-rated ICs and MOSFETs. |
| PPPM (Peak Pulse Power) | 1000 W (10/1000 µs) - Sustains high-energy transients common in automotive load-dump and inductive switching events. |
| ID (Reverse Leakage) | 5 µA max at 12 V - Ensures minimal standby power loss and signal integrity in always-on circuits. |
| TJ max | 150 °C - Enables use in under-hood automotive modules and industrial power supplies with elevated ambient temperatures. |
| AEC-Q101 Qualified | Yes - Validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD HBM/MM. |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, low-profile case with cathode band marking on one end. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); terminals are matte tin-plated for J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to protected line (e.g., 12 V rail) | Low forward voltage drop (<3.5 V at 50 A) enables use in crowbar or clamp configurations without excessive heating. |
| Cathode | Current exit terminal in forward bias; marked by color band; tied to ground or lower-potential reference | Defines unidirectional polarity - must be oriented correctly to suppress positive-going transients only. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over time and temperature, eliminating parameter drift due to moisture ingress or oxidation. |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS modules requiring zero-failure reliability. |
| MSL Level 1 rating | Supports single-reflow assembly without baking or special handling, reducing manufacturing cost and risk. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a), improving system immunity. |
| UL 94 V-0 molding compound | Provides flame-retardant housing essential for safety-critical applications in enclosed enclosures or battery systems. |
Applications
| Automotive Power Distribution | Industrial Sensor Signal Lines |
|---|---|
|
Use Scenario: Protection of 12 V supply rails in BCM, lighting modules, and infotainment head units against load dump (ISO 16750-2) and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between battery input and DC-DC converter input stage. Use Value: Clamps transients to ≤19.9 V, preventing damage to 24 V-tolerant regulators and ensuring uninterrupted operation during 1000 W surges. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Point-of-entry TVS on twisted-pair signal lines upstream of op-amp buffers or ADC front-ends. Use Value: Sub-20 ns response time and 5 µA leakage preserve signal fidelity while diverting >15 kV HBM ESD pulses away from precision circuitry. |
| Telecom Power Feeds | Consumer USB Power Delivery |
|
Use Scenario: Safeguarding PoE-powered devices (e.g., IP cameras, access points) against induced surges on 48 V DC input lines. IC Role / Device Role / Timing Role: Primary surge clamp on midspan injector output, coordinated with secondary TVS on powered device side. Use Value: 1000 W rating handles worst-case lightning-induced surges on outdoor cabling while maintaining <1 % derating at 85 °C ambient. |
Use Scenario: Overvoltage protection on VBUS lines of USB-C PD adapters and portable chargers exposed to adapter fault conditions. IC Role / Device Role / Timing Role: Secondary-level TVS after primary OVP IC, absorbing residual energy from failed buck converter feedback loops. Use Value: 12 V VWM aligns with USB PD 3.0 9 V/15 V profiles; 19.9 V VC prevents latch-up in USB controller ICs rated to 20 V absolute maximum. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12A-E3/5B | Same DO-214AA package and 12 V VWM, but rated for 600 W PPPM (vs. 1000 W); lower IPPM (30 A) and higher VC (23.2 V). | Acceptable for consumer-grade or non-automotive applications with lower surge severity (e.g., IEC 61000-4-5 Level 3). | Select when cost sensitivity outweighs need for AEC-Q101 or 1000 W capability. |
| SMAJ12A-E3/5B | DO-214AC (SMA) package, smaller footprint (4.06 mm × 2.44 mm); same 12 V VWM but only 400 W PPPM and 26.5 V VC at 15.2 A. | Suitable for space-constrained consumer electronics where board area is critical and surge energy is limited. | Choose for compact layouts where 1000 W rating is unnecessary and thermal dissipation is managed via copper area. |
Compared with SMBJ12A-E3/5B and SMAJ12A-E3/5B, SMB10J12-E3/5B delivers 67 % higher peak power handling and 14 % lower clamping voltage-critical for protecting modern 12 V automotive ECUs against ISO 16750-2 load dump without derating or parallel devices.
Availability
SMB10J12-E3/5B is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and telecom power feed applications requiring stable component supply, AEC-Q101 compliance, and 1000 W surge resilience.
Supply support for SMB10J12-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, rectifiers, and protection devices with emphasis on reliability, ruggedness, and automotive qualification.
The SMB10J series belongs to Vishay's TRANSZORB® TVS platform, engineered specifically for high-power transient suppression in harsh environments-including under-hood automotive, industrial motor drives, and outdoor telecom infrastructure.
FAQ
What is the clamping voltage of SMB10J12-E3/5B at its rated peak pulse current?
The SMB10J12-E3/5B has a maximum clamping voltage (VC) of 19.9 V when subjected to its peak pulse current (IPPM) of 50.3 A under a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream components rated for ≤20 V absolute maximum will remain within safe operating limits during surge events.
Is SMB10J12-E3/5B qualified for automotive applications?
Yes, SMB10J12-E3/5B is AEC-Q101 qualified, having passed stress tests including high-temperature operating life (HTOL), temperature cycling (TCT), and human-body-model ESD (HBM). The "HE3" variant is explicitly designated for automotive grade, but the E3 suffix in SMB10J12-E3/5B also denotes AEC-Q101 compliance per Vishay's ordering documentation and datasheet revision notes.
What does the "-E3/5B" suffix indicate in SMB10J12-E3/5B?
The "-E3" suffix indicates RoHS-compliant, commercial-grade construction with matte tin-plated leads meeting J-STD-002 solderability and JESD201 Class 1A whisker resistance. The "/5B" denotes packaging in 13-inch diameter plastic tape and reel, with a base quantity of 3200 units per reel-optimized for high-volume SMT placement.
How does SMB10J12-E3/5B differ from SMBJ12A-E3/5B?
SMB10J12-E3/5B offers 1000 W peak pulse power (PPPM) versus 600 W for SMBJ12A-E3/5B, with correspondingly higher IPPM (50.3 A vs. 30 A) and lower clamping voltage (19.9 V vs. 23.2 V). Both share DO-214AA packaging and 12 V VWM, but SMB10J12-E3/5B is specified for more severe surge environments such as automotive load dump per ISO 16750-2.
Can SMB10J12-E3/5B be used in bidirectional protection circuits?
No-SMB10J12-E3/5B is a unidirectional TVS diode, identified by its cathode band marking and specified electrical characteristics for single-polarity clamping. For bidirectional protection, Vishay offers the SMB8J12CA variant (same VWM but symmetrical breakdown), which lacks polarity marking and supports ±12 V standoff.
SMB10J12-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):
- 12V
- Voltage - Breakdown (Min):
- 13.3V
- Voltage - Clamping (Max) @ Ipp:
- 22V
- Current - Peak Pulse (10/1000µs):
- 45.5A
- 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)
SMB10J12-E3/5B FAQ
1.How can I place an order for SMB10J12-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J12-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 SMB10J12-E3/5B reliable?
The price and inventory of SMB10J12-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 SMB10J12-E3/5B is usually 5 days.
3.What payment methods are accepted for SMB10J12-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J12-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J12-E3/5B?
SMB10J12-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J12-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 SMB10J12-E3/5B?
For technical support, including SMB10J12-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J12-E3/5B requirements.
6.How does Aetrix verify that SMB10J12-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMB10J12-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 SMB10J12-E3/5B meets industry standards.
7.What is the process for return or replacement of SMB10J12-E3/5B?
All SMB10J12-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J12-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 SMB10J12-E3/5B part is unused and in its original packaging.
Return procedure for SMB10J12-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J12-E3/5B Tags
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