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Vishay General Semiconductor - Diodes Division SMB10J28AHM3_B/H
- Part No.:
- SMB10J28AHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J28AHM3_B/H.pdf
- Description:
- 1KW,28V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:5,304
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Product details
Overview
SMB10J28AHM3_B/H 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), 28 V stand-off voltage (VWM), and 45.4 V clamping voltage at 22.0 A peak pulse current. It is AEC-Q101 qualified and used to protect automotive sensor signal lines and MOSFET gate drivers against inductive switching transients.
For engineers reviewing the SMB10J28AHM3_B/H datasheet, SMB10J28AHM3_B/H pinout, SMB10J28AHM3_B/H application, or SMB10J28AHM3_B/H equivalent, key selection criteria include clamping performance under 10/1000 µs surges, AEC-Q101 qualification status, unidirectional polarity, thermal resistance (RθJA = 72 °C/W), 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, triggering when reverse voltage exceeds its 31.1–34.4 V breakdown range (VBR at 1 mA). Its glass-passivated junction ensures stable avalanche behavior and low incremental surge resistance, enabling fast response (<1 ns) to ESD and lightning-induced transients.
Designed for surface-mount use in automotive ECUs and industrial control modules, it meets MSL Level 1 per J-STD-020 (260 °C peak reflow), features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and supports operation from –55 °C to +150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 28 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 31.1 V / 34.4 V - Breakdown occurs within this range at 1 mA test current, defining turn-on threshold |
| VC @ IPPM | 45.4 V - Clamped voltage during 22.0 A 10/1000 µs surge, limiting stress on downstream ICs |
| PPPM | 1000 W - Peak pulse power handling capability under standard 10/1000 µs waveform |
| IPPM | 22.0 A - Maximum non-repetitive surge current the device safely clamps without failure |
| TJ max | +150 °C - Maximum junction temperature, enabling use in under-hood automotive environments |
| RθJA | 72 °C/W - Thermal resistance from junction to ambient on standard 0.2" × 0.2" copper pads |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with cathode band marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); terminals are matte tin-plated for solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / surge return path | Connected to protected line's low-side reference (e.g., ground or signal return) in unidirectional configuration |
| Cathode (banded end) | Reverse-biased clamping node | Connected to the line being protected (e.g., sensor supply or CAN-H); conducts during overvoltage to clamp |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock testing |
| Glass-passivated junction | Ensures consistent avalanche characteristics and long-term stability under repeated surge stress |
| MSL Level 1 rating | Enables single-pass reflow at 260 °C peak without moisture-induced damage |
| Low profile SMB package | 0.220" length enables compact PCB layout while maintaining 1000 W surge capacity |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets automotive environmental compliance requirements without compromising electrical performance |
Applications
| Automotive Sensor Protection | Industrial Motor Drive Inputs |
|---|---|
Use Scenario: Protecting analog output lines of ABS wheel speed sensors exposed to load dump and inductive kickback in 12 V vehicle systems. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between sensor VOUT and ground to clamp transients before they reach ADC input of microcontroller. Use Value: Limits voltage to ≤45.4 V during 22 A surges, preventing latch-up or damage to 5 V-tolerant signal conditioning ICs. | Use Scenario: Safeguarding enable and fault feedback signals in 24 V industrial servo drives subjected to relay contact bounce and coil de-energization spikes. IC Role / Device Role / Timing Role: Standoff-rated TVS on isolated digital I/O lines interfacing with PLC outputs. Use Value: Maintains 28 V working voltage margin while clamping 1000 W surges-compatible with IEC 61000-4-5 Level 3 immunity requirements. |
| On-Board Charger (OBC) Control Logic | Automotive Body Control Module (BCM) |
Use Scenario: Shielding microcontroller GPIOs controlling relay drivers and status LEDs in EV on-board chargers operating in high-noise 400 V battery environments. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS on 3.3 V/5 V logic rails to suppress coupled noise from high-frequency DC-DC converters. Use Value: Delivers sub-1 ns response and 45.4 V clamping-preserving signal integrity without adding propagation delay to timing-critical control loops. | Use Scenario: Protecting LIN bus transceiver inputs and door module switch sense lines from ESD and battery reversal events in passenger compartment electronics. IC Role / Device Role / Timing Role: AEC-Q101-qualified TVS placed at connector interface to absorb ±30 kV contact ESD per ISO 10605. Use Value: Halogen-free HM3 construction satisfies OEM material declarations; 22 A IPPM withstands multiple ESD strikes without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ28AHE3_A/H | Same VWM (28 V), identical SMB package, but commercial-grade (non-AEC-Q101), E3 suffix (RoHS, not halogen-free) | Lacks automotive qualification; suitable for industrial/commercial designs where AEC-Q101 is not mandated | Select when cost sensitivity outweighs automotive compliance requirements and halogen-free materials are optional |
| SAC28 | Same VWM | Smaller SOD-123FL package (lower power: 400 W PPPM), higher clamping voltage (53 V), no AEC-Q101 listing | Choose only for space-constrained, lower-energy applications where 22 A surge current is not required |
Compared with SMB10J28AHM3_B/H, SMBJ28AHE3_A/H offers identical electrical specs but lacks AEC-Q101 and halogen-free certification, while SAC28 trades power handling and qualification for footprint reduction-neither is pin-compatible due to differing package outlines and thermal pad requirements.
Availability
SMB10J28AHM3_B/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial motor drive interfaces, and on-board charger control logic requiring stable component supply across extended temperature ranges and high-reliability production cycles.
Supply support for SMB10J28AHM3_B/H 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 high-reliability, automotive-qualified components.
The SMB10J series belongs to Vishay's TRANSZORB® TVS platform, engineered specifically for high-power, surface-mount transient suppression in harsh automotive and industrial environments where robustness and repeatable clamping performance are critical.
FAQ
What is the clamping voltage of SMB10J28AHM3_B/H at its rated peak pulse current?
The SMB10J28AHM3_B/H has a maximum clamping voltage (VC) of 45.4 V at its rated peak pulse current (IPPM) of 22.0 A under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream circuitry remains within safe voltage limits during surge events. The SMB10J28AHM3_B/H maintains this clamping performance across its full operating temperature range.
Is SMB10J28AHM3_B/H qualified for automotive applications?
Yes, SMB10J28AHM3_B/H is AEC-Q101 qualified, as confirmed by Vishay's official documentation and ordering code suffix "HM3_B/H", where "H" denotes AEC-Q101 qualification and "M3" indicates halogen-free, RoHS-compliant construction. This makes the SMB10J28AHM3_B/H suitable for under-hood and body electronics where automotive reliability standards apply.
What does the "HM3_B/H" suffix mean in SMB10J28AHM3_B/H?
The "HM3_B/H" suffix identifies the SMB10J28AHM3_B/H as halogen-free (H), RoHS-compliant (M3), AEC-Q101 qualified (H), supplied in 7" tape-and-reel (B), and with revision level H (H). The "_B/H" denotes packaging format and revision code per Vishay's ordering nomenclature-not a functional variant. All electrical and thermal specs match the base SMB10J28A device.
Can SMB10J28AHM3_B/H be used in bidirectional configurations?
No, SMB10J28AHM3_B/H is a unidirectional TVS diode, as indicated by its part number ending in "A" (not "CA") and confirmed by its single cathode band marking. Bidirectional variants such as SMB8J28CA exist in the same family but have different breakdown symmetry, lower peak pulse power (800 W), and no polarity marking-SMB10J28AHM3_B/H must be oriented with the banded end toward the protected line.
What is the thermal resistance of SMB10J28AHM3_B/H, and how does it affect layout?
The SMB10J28AHM3_B/H 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. To maintain safe junction temperatures during repetitive surges, PCB layout must provide adequate copper area and avoid thermal bottlenecks-reducing pad size increases RθJA and risks thermal runaway. The SMB10J28AHM3_B/H data sheet specifies minimum pad dimensions to ensure this rating.
SMB10J28AHM3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Bulk
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB10J28AHM3_B/H FAQ
1.How can I place an order for SMB10J28AHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J28AHM3_B/H 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 SMB10J28AHM3_B/H reliable?
The price and inventory of SMB10J28AHM3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J28AHM3_B/H is usually 5 days.
3.What payment methods are accepted for SMB10J28AHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J28AHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J28AHM3_B/H?
SMB10J28AHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J28AHM3_B/H 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 SMB10J28AHM3_B/H?
For technical support, including SMB10J28AHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J28AHM3_B/H requirements.
6.How does Aetrix verify that SMB10J28AHM3_B/H is sourced from the original manufacturer or authorized distributors?
All SMB10J28AHM3_B/H 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 SMB10J28AHM3_B/H meets industry standards.
7.What is the process for return or replacement of SMB10J28AHM3_B/H?
All SMB10J28AHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J28AHM3_B/H, 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 SMB10J28AHM3_B/H part is unused and in its original packaging.
Return procedure for SMB10J28AHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J28AHM3_B/H Tags
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Diodes Incorporated
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Diodes Incorporated
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