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Vishay General Semiconductor - Diodes Division SMB10J28A-M3/52
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- Part No.:
- SMB10J28A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J28A-M3/52.pdf
- Description:
- TVS DIODE 28VWM 45.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,165
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Product details
Overview
SMB10J28A-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 28 V stand-off voltage (VWM), 31.1–34.4 V breakdown voltage (VBR at 1 mA), 45.4 V clamping voltage (VC) at 22.0 A peak pulse current (IPPM), and 1000 W peak pulse power (10/1000 µs waveform), commonly deployed in automotive power supply input stages.
For engineers reviewing the SMB10J28A-M3/52 datasheet, SMB10J28A-M3/52 pinout, SMB10J28A-M3/52 application, or SMB10J28A-M3/52 equivalent, key selection criteria include clamping performance under 22 A surge, unidirectional polarity with cathode band marking, AEC-Q101 qualification status, halogen-free RoHS compliance (M3 suffix), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR, it avalanches to divert transient energy away from downstream ICs. Its glass-passivated junction ensures stable breakdown and low leakage (<1.0 µA at VWM), while its low incremental surge resistance enables rapid clamping response within picoseconds.
The device is rated for continuous operation from −55 °C to +150 °C junction temperature, with thermal resistance of 72 °C/W (junction-to-ambient, on recommended pad layout) and 20 °C/W (junction-to-lead), supporting reliable performance in under-hood automotive environments and industrial power supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 28 V - maximum continuous reverse operating voltage before conduction begins |
| VBR (min/max) | 31.1 V / 34.4 V at 1 mA - guaranteed avalanche initiation range for design margining |
| VC @ IPPM | 45.4 V at 22.0 A - clamped voltage seen by protected circuit during full-rated 1000 W transient |
| PPPM | 1000 W (10/1000 µs) - peak surge power handling capability per single event |
| IFSM | 100 A (8.3 ms half-sine) - surge current rating for AC line fault conditions |
| Junction Temp | −55 °C to +150 °C - operational range compatible with AEC-Q101 automotive qualification |
| Leakage @ VWM | ≤1.0 µA - minimal standby power loss and signal integrity impact on 28 V rails |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with matte tin-plated leads; polarity indicated by cathode band at one end.
| 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 conduction terminal | Marked with color band; connected to protected line (e.g., 28 V rail) to clamp overvoltage to ground |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock |
| Halogen-free & RoHS-compliant (M3) | Meets JESD201 Class 2 whisker resistance and global environmental compliance requirements |
| Low profile SMB package | Enables high-density PCB layouts and compatibility with standard SMT pick-and-place equipment |
| Glass-passivated junction | Ensures stable VBR tolerance, low leakage, and long-term parametric stability under thermal stress |
| MSL Level 1 (260 °C peak) | Supports lead-free reflow without moisture-induced popcorning or delamination |
Applications
| Automotive Power Input Protection | Industrial DC Power Rail Clamping |
|---|---|
Use Scenario: Protecting engine control unit (ECU) 28 V supply input against load dump transients up to ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between battery rail and DC-DC converter input. Use Value: Limits voltage to ≤45.4 V during 1000 W surges, preventing damage to downstream PMICs and microcontrollers. | Use Scenario: Safeguarding programmable logic controller (PLC) 24 V DC input modules from inductive switching spikes. IC Role / Device Role / Timing Role: Primary overvoltage clamp on field-side power entry, upstream of EMI filter and regulator. Use Value: Responds in <1 ns to clamp 22 A transients, maintaining system uptime and reducing field failure rates. |
| Telecom DC Feeder Protection | Consumer Device USB Power Line Protection |
Use Scenario: Securing remote radio head (RRH) 28 V DC feeder lines against lightning-induced surges in outdoor base stations. IC Role / Device Role / Timing Role: First-stage TVS on outdoor-rated power interface board, coordinated with GDT secondary protection. Use Value: Withstands repeated 1000 W pulses without degradation, meeting Telcordia GR-1089-CORE immunity requirements. | Use Scenario: Adding robust overvoltage protection to USB-C PD power delivery input stage in portable medical monitors. IC Role / Device Role / Timing Role: Standoff-rated TVS on VBUS line to absorb hot-plug and adapter fault transients. Use Value: Maintains <1.0 µA leakage at 28 V, preserving battery life while clamping to safe levels for USB PD controller ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ28A-M3/52 | Same VWM/VBR/VC specs but rated for 600 W PPPM (vs. 1000 W) | Limited to lower-energy transients; not suitable for ISO 7637-2 Pulse 5a load dump | Select SMB10J28A-M3/52 where full 1000 W surge immunity is required. |
| SMCJ28A-M3/52 | Same electrical specs but in larger SMC (DO-214AB) package; RθJA = 35 °C/W (vs. 72 °C/W) | Better thermal dissipation but requires 30% more PCB area; incompatible with SMB footprint | Choose SMB10J28A-M3/52 for space-constrained SMB layouts needing 1000 W rating. |
Compared with SMBJ28A-M3/52 and SMCJ28A-M3/52, SMB10J28A-M3/52 uniquely delivers 1000 W surge capability in the compact SMB footprint-enabling automotive-grade protection without layout redesign or thermal derating penalties.
Availability
SMB10J28A-M3/52 is available at Aetrix Electronics and suitable for automotive electronics, industrial PLCs, telecom power interfaces, and consumer USB-C PD systems requiring stable component supply with AEC-Q101 assurance and halogen-free compliance.
Supply support for SMB10J28A-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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power density, and automotive qualification.
The SMB10JxxA series belongs to Vishay's high-power TRANSZORB® TVS family, engineered specifically for demanding automotive and industrial surge environments where 1000 W clamping in SMB form factor is essential.
FAQ
What is the clamping voltage of SMB10J28A-M3/52 at its rated peak pulse current?
The SMB10J28A-M3/52 has a maximum clamping voltage (VC) of 45.4 V at 22.0 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on the protected circuit during full-rated transient events. The SMB10J28A-M3/52 maintains this clamping performance across its qualified temperature range.
Is SMB10J28A-M3/52 qualified for automotive applications?
Yes, SMB10J28A-M3/52 is AEC-Q101 qualified, as confirmed by Vishay's documentation for the SMB10JxxA family. The M3 suffix denotes halogen-free, RoHS-compliant construction meeting JESD201 Class 2 whisker resistance, and the device is rated for operation from −55 °C to +150 °C. These attributes make SMB10J28A-M3/52 suitable for under-hood and body-control module applications.
What does the "M3/52" suffix indicate in SMB10J28A-M3/52?
The "M3" suffix specifies halogen-free, RoHS-compliant construction with JESD201 Class 2 whisker resistance, while "/52" denotes packaging in 7-inch diameter plastic tape and reel containing 750 units. This format supports automated SMT assembly and aligns with Vishay's commercial-grade ordering nomenclature. The SMB10J28A-M3/52 is not AEC-Q101 qualified by suffix alone-the qualification applies to the base SMB10J28A device when ordered with HE3 or HM3 variants.
How does SMB10J28A-M3/52 differ from bidirectional TVS diodes like SMB8J28CA-M3/52?
SMB10J28A-M3/52 is unidirectional and functions only during reverse-voltage transients, with a defined cathode band for polarity-sensitive placement. In contrast, SMB8J28CA-M3/52 is bidirectional and protects both polarities symmetrically but offers lower peak pulse power (800 W vs. 1000 W). The SMB10J28A-M3/52 is preferred for DC rail protection where polarity is fixed and higher surge capacity is needed.
What is the thermal resistance of SMB10J28A-M3/52, and how does it affect layout?
The SMB10J28A-M3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 72 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes minimum recommended pad layout per Vishay's datasheet. To avoid thermal derating, designers must allocate adequate copper area and consider airflow or adjacent heat sources. The SMB10J28A-M3/52's RθJL of 20 °C/W further supports efficient heat transfer to PCB traces.
SMB10J28A-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):
- 28V
- Voltage - Breakdown (Min):
- 31.1V
- Voltage - Clamping (Max) @ Ipp:
- 45.4V
- Current - Peak Pulse (10/1000µs):
- 22A
- 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)
SMB10J28A-M3/52 FAQ
1.How can I place an order for SMB10J28A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J28A-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 SMB10J28A-M3/52 reliable?
The price and inventory of SMB10J28A-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 SMB10J28A-M3/52 is usually 5 days.
3.What payment methods are accepted for SMB10J28A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J28A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J28A-M3/52?
SMB10J28A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J28A-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 SMB10J28A-M3/52?
For technical support, including SMB10J28A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J28A-M3/52 requirements.
6.How does Aetrix verify that SMB10J28A-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMB10J28A-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 SMB10J28A-M3/52 meets industry standards.
7.What is the process for return or replacement of SMB10J28A-M3/52?
All SMB10J28A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J28A-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 SMB10J28A-M3/52 part is unused and in its original packaging.
Return procedure for SMB10J28A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J28A-M3/52 Tags
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