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Vishay General Semiconductor - Diodes Division SMB10J8.0A-M3/52
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- Part No.:
- SMB10J8.0A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J8.0A-M3/52.pdf
- Description:
- TVS DIODE 8VWM 13.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,752
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Product details
Overview
SMB10J8.0A-M3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection on DC power rails and signal lines. It features a 8.0 V stand-off voltage (VWM), 8.89–9.83 V breakdown voltage (VBR at 1.0 mA), 13.6 V clamping voltage (VC) at 73.5 A peak pulse current, and 1000 W peak pulse power rating with 10/1000 µs waveform.
For engineers reviewing the SMB10J8.0A-M3/52 datasheet, SMB10J8.0A-M3/52 pinout, SMB10J8.0A-M3/52 application, or SMB10J8.0A-M3/52 equivalent, this device is selected for robust overvoltage protection in automotive ECUs, industrial I/O modules, and telecom interface circuits where fast response (<1 ns), low clamping ratio, and AEC-Q101 qualification are required.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>100 MΩ at 8.0 V), then avalanches sharply at VBR to clamp transients within nanoseconds. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and repeatable breakdown behavior across temperature (–55 °C to +150 °C).
The SMB10J8.0A-M3/52 uses a single P-N junction structure optimized for unidirectional surge suppression. It delivers 1000 W peak pulse power dissipation with 72 °C/W junction-to-ambient thermal resistance when mounted on 5.0 mm × 5.0 mm copper pads - enabling reliable operation without heatsinking in space-constrained PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - Maximum continuous reverse operating voltage before significant leakage begins |
| VBR (min/max) | 8.89 V / 9.83 V at 1.0 mA - Confirmed breakdown range ensuring predictable turn-on during surges |
| VC @ IPPM | 13.6 V at 73.5 A - Clamping voltage limiting downstream IC stress during 10/1000 µs transients |
| PPPM | 1000 W - Peak surge energy handling capacity per single event, critical for ISO 7637-2 pulse 1/2a/5a compliance |
| IFSM | 100 A - Surge current rating for 8.3 ms half-sine wave, supporting motor drive and relay coil snubbing |
| Junction Temp | –55 °C to +150 °C - Enables use in under-hood automotive and industrial environments |
| Package | SMB (DO-214AA) - Surface-mount footprint (4.57 mm × 3.94 mm) compatible with automated placement and reflow |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; cathode indicated by color band on one end; meets UL 94 V-0 flammability rating and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-voltage rail; defines polarity for unidirectional clamping |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., 12 V supply); avalanche conduction occurs from cathode to anode during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMB package | Enables placement in tight spaces (max height 2.20 mm) while maintaining 1000 W surge capability |
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity |
| AEC-Q101 qualified (M3 suffix) | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without moisture sensitivity concerns |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for global OEM and industrial deployments |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply inputs of engine control units (ECUs) against load dump and inductive switching transients per ISO 7637-2. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed between battery rail and local regulator input. Use Value: Limits clamped voltage to 13.6 V during 1000 W surges, preventing damage to downstream LDOs and microcontrollers rated for ≤16 V absolute maximum. | Use Scenario: Safeguarding analog outputs (e.g., 4–20 mA loops) and digital I/O (CAN, LIN) in programmable logic controllers (PLCs) exposed to field wiring surges. IC Role / Device Role / Timing Role: Bidirectional-capable protection element (used here in unidirectional configuration) on sensor supply and signal return paths. Use Value: Sub-1 ns response time and 13.6 V clamping ensure signal integrity remains intact during 1 kV/500 A lightning-induced surges per IEC 61000-4-5. |
| Telecom Line Interface Protection | Consumer Power Adapter Input Protection |
Use Scenario: Shielding Ethernet PHY power pins and auxiliary bias rails in PoE-powered switches and base stations from ESD and AC-line coupled transients. IC Role / Device Role / Timing Role: Primary front-end TVS on 3.3 V/5 V auxiliary supplies feeding communication ICs. Use Value: 1.0 µA max leakage at 8.0 V avoids loading sensitive bias networks; 1000 W rating handles repeated surges without degradation. | Use Scenario: Overvoltage protection on primary-side DC bus (post-bridge rectifier) of universal-input AC/DC adapters used in smart home hubs and audio equipment. IC Role / Device Role / Timing Role: Unidirectional clamping device placed between bulk capacitor and switching controller VCC pin. Use Value: Withstands 100 A non-repetitive forward surge (IFSM), protecting controllers during cold-start inrush and rectifier recovery spikes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0A-M3/52 | Same electrical specs and SMB package; differs only in part numbering convention (SMBJ vs SMB10 series prefix) | No functional difference; both meet identical AEC-Q101, MSL Level 1, and halogen-free requirements | Select SMBJ8.0A-M3/52 if sourcing from alternate Vishay family inventory with identical performance and qualification |
| 1.5SMC8.0A | Higher package thermal resistance (RθJA = 11°C/W vs 72°C/W), lower surge rating (1500 W but larger SMC package), different mounting pad layout | Requires larger PCB area and different thermal design; not drop-in due to SMC (DO-214AB) footprint mismatch | Choose only when higher peak power (1500 W) justifies larger board space and revised layout |
Compared with SMBJ8.0A-M3/52, the SMB10J8.0A-M3/52 offers identical protection performance in the same SMB footprint; versus 1.5SMC8.0A, it trades peak power for compactness and superior board-level thermal management in dense layouts.
Availability
SMB10J8.0A-M3/52 is available at Aetrix Electronics and suitable for automotive ECU designs, industrial PLC I/O modules, and telecom power interface circuits requiring stable component supply, AEC-Q101 qualification, and consistent surge performance across production lots.
Supply support for SMB10J8.0A-M3/52 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, MOSFETs, optoelectronics, and passive components 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, surface-mount transient suppression in automotive, industrial, and communications systems where rapid clamping and long-term stability are critical.
FAQ
What is the clamping voltage of SMB10J8.0A-M3/52 at its rated peak pulse current?
The SMB10J8.0A-M3/52 has a maximum clamping voltage (VC) of 13.6 V at its specified peak pulse current (IPPM) of 73.5 A, measured using the standardized 10/1000 µs double-exponential waveform. This value is confirmed in Vishay's Document Number 88422, page 2, and defines the upper voltage limit imposed on protected circuitry during surge events. The SMB10J8.0A-M3/52 maintains this clamping performance across its full operating temperature range.
Is SMB10J8.0A-M3/52 qualified for automotive applications?
Yes, SMB10J8.0A-M3/52 is AEC-Q101 qualified, as explicitly stated in the Vishay datasheet (Document Number 88422, page 1). The "M3" suffix denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification, making the SMB10J8.0A-M3/52 suitable for under-hood and chassis-mounted automotive electronics including body control modules, lighting drivers, and sensor interfaces.
What is the standoff voltage (VWM) and why is it important for SMB10J8.0A-M3/52?
The standoff voltage (VWM) of SMB10J8.0A-M3/52 is 8.0 V - the maximum DC or continuous reverse voltage the device can withstand without entering avalanche conduction. This parameter ensures minimal leakage current (<1.0 µA) during normal operation while allowing sufficient margin below the system's maximum operating voltage. For SMB10J8.0A-M3/52, VWM = 8.0 V enables safe use on nominal 9–12 V rails in automotive and industrial applications.
How does the SMB10J8.0A-M3/52 differ from bidirectional TVS diodes like SMB8J8.0CA?
The SMB10J8.0A-M3/52 is unidirectional and functions only for positive-going transients on a referenced rail (e.g., protecting a +12 V line to ground), whereas SMB8J8.0CA is bidirectional and protects AC-coupled or floating lines. SMB10J8.0A-M3/52 offers higher peak pulse power (1000 W vs 800 W) and higher peak pulse current (73.5 A vs 58.8 A) than its bidirectional counterpart. Its unidirectional architecture also provides lower forward voltage drop during fault conditions.
What PCB pad layout is recommended for optimal thermal performance of SMB10J8.0A-M3/52?
Vishay specifies a minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad area per terminal for SMB10J8.0A-M3/52 to achieve the published thermal resistance (RθJA = 72 °C/W) and full 1000 W surge rating. The pad layout must follow the DO-214AA outline in the datasheet (page 5), with cathode band alignment verified. Use of internal ground/power planes connected via multiple vias further enhances heat dissipation and surge current handling in production PCBs.
SMB10J8.0A-M3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 8V
- Voltage - Breakdown (Min):
- 8.89V
- Voltage - Clamping (Max) @ Ipp:
- 13.6V
- Current - Peak Pulse (10/1000µs):
- 73.5A
- 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 (SMBJ)
SMB10J8.0A-M3/52 FAQ
1.How can I place an order for SMB10J8.0A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J8.0A-M3/52 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 SMB10J8.0A-M3/52 reliable?
The price and inventory of SMB10J8.0A-M3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J8.0A-M3/52 is usually 5 days.
3.What payment methods are accepted for SMB10J8.0A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J8.0A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J8.0A-M3/52?
SMB10J8.0A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J8.0A-M3/52 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 SMB10J8.0A-M3/52?
For technical support, including SMB10J8.0A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J8.0A-M3/52 requirements.
6.How does Aetrix verify that SMB10J8.0A-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMB10J8.0A-M3/52 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 SMB10J8.0A-M3/52 meets industry standards.
7.What is the process for return or replacement of SMB10J8.0A-M3/52?
All SMB10J8.0A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J8.0A-M3/52, 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 SMB10J8.0A-M3/52 part is unused and in its original packaging.
Return procedure for SMB10J8.0A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J8.0A-M3/52 Tags
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