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Vishay General Semiconductor - Diodes Division SMB10J28A-M3/5B
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- Part No.:
- SMB10J28A-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J28A-M3/5B.pdf
- Description:
- TVS DIODE 28VWM 45.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,520
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Product details
Overview
SMB10J28A-M3/5B 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 (PPPM) with 10/1000 µs waveform - deployed in automotive power supply inputs and industrial sensor interfaces.
For engineers reviewing the SMB10J28A-M3/5B datasheet, SMB10J28A-M3/5B pinout, SMB10J28A-M3/5B application, or SMB10J28A-M3/5B equivalent, key selection criteria include clamping performance under 22 A surge, AEC-Q101 qualification status, halogen-free RoHS compliance (M3 suffix), thermal resistance (RθJA = 72 °C/W), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector, activating when reverse voltage exceeds its VBR threshold to divert transient energy away from downstream ICs. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response time (<1 ns), while low incremental surge resistance enables effective suppression of inductive switching spikes and ESD events.
The device is rated for TJ = –55 °C to +150 °C operation and meets MSL level 1 per J-STD-020 (peak reflow ≤ 260 °C). Its SMB package supports high-power density mounting with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102 solderability standards.
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 at IT = 1 mA - defines reliable turn-on threshold range for surge detection |
| VC @ IPPM | 45.4 V at 22.0 A - clamped voltage seen by protected circuit during full-rated 10/1000 µs surge |
| PPPM | 1000 W - peak transient power handling capability under standardized waveform |
| ID @ VWM | <1.0 µA - ultra-low leakage preserves efficiency in battery-powered or high-impedance circuits |
| TJ max | +150 °C - enables use in under-hood automotive environments and thermally constrained enclosures |
| RθJA | 72 °C/W - thermal resistance determines required PCB copper area for sustained surge duty cycles |
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 lead-free soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path (cathode-banded end is cathode) | Connected to ground or lower-potential rail; current flows anode-to-cathode during clamping |
| Cathode | Protected line connection point | Connected to line being protected (e.g., 24 V supply input); reverse-biased during normal operation |
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 IEC 61249-2-21 and JESD201 Class 2 whisker resistance requirements |
| Low profile SMB package | Enables high-density layout on space-constrained PCBs while maintaining 1000 W surge rating |
| Glass passivated junction | Ensures stable VBR over lifetime and immunity to moisture-induced parameter drift |
| MSL Level 1 | Supports standard SMT reflow without baking; peak temperature up to 260 °C allowed |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 24 V CAN bus power input against load dump transients and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between power rail and chassis ground to clamp surges above 28 V. Use Value: Limits voltage to ≤45.4 V during 22 A transients, preventing damage to upstream DC/DC converters and CAN transceivers. | Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loop) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional TVS used across signal and return paths to absorb ±15 kV contact ESD per IEC 61000-4-2. Use Value: Sub-1 ns response and <1 µA leakage preserve signal integrity and measurement accuracy in precision sensor systems. |
| Telecom DC Power Distribution | Consumer Device USB Port Protection |
Use Scenario: Guarding 48 V PoE-powered equipment front-end against lightning-induced surges on Ethernet cables. IC Role / Device Role / Timing Role: Primary shunt protector on DC input stage, coordinated with upstream GDT or MOV for staged clamping. Use Value: 1000 W PPPM rating handles multi-kA induced surges while maintaining low clamping voltage for downstream silicon safety. | Use Scenario: Adding secondary-level surge protection on VBUS line of USB-C ports in portable electronics. IC Role / Device Role / Timing Role: Fast-acting TVS placed immediately after connector to limit transient propagation into USB controller IC. Use Value: 45.4 V VC ensures protected USB PHY remains below absolute maximum ratings during 8/20 µs surge events. |
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-M3/5B | Same VWM (28 V), identical SMB package, but lower PPPM (600 W) and lower IPPM (17.3 A) | Not suitable for 1000 W surge environments; limited to lighter-duty consumer or telecom applications | Select only if system-level surge testing confirms ≤600 W requirement and thermal budget allows higher VC |
| 1.5SMC28AHE3_A/H | Same VWM and VC, but larger SMC (DO-214AB) package (7.11 mm × 6.22 mm), higher RθJA (50 °C/W), and same 1000 W rating | Requires more PCB area; better for high-reliability industrial designs needing enhanced thermal margin | Choose when board space permits larger footprint and higher thermal robustness is prioritized over density |
Compared with SMBJ28A-M3/5B and 1.5SMC28AHE3_A/H, SMB10J28A-M3/5B delivers identical 1000 W surge rating in the smallest possible SMB footprint with AEC-Q101 validation - making it optimal for space-constrained automotive and industrial modules where both size and qualification matter.
Availability
SMB10J28A-M3/5B is available at Aetrix Electronics and suitable for automotive power input protection, industrial sensor interface hardening, and telecom DC distribution requiring stable component supply with halogen-free, AEC-Q101-qualified TVS diodes.
Supply support for SMB10J28A-M3/5B 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, MOSFETs, and protection devices with emphasis on reliability, power density, and automotive qualification.
The SMB10JxxA series belongs to Vishay's TRANSZORB® high-power TVS family, engineered specifically for demanding transient suppression in automotive, industrial, and telecom infrastructure where compact size, AEC-Q101 compliance, and consistent clamping performance are critical.
FAQ
What is the clamping voltage of SMB10J28A-M3/5B at its rated peak pulse current?
The SMB10J28A-M3/5B has a maximum clamping voltage (VC) of 45.4 V at its rated peak pulse current (IPPM) of 22.0 A, measured using the standard 10/1000 µs waveform. This value ensures downstream components see no more than 45.4 V during full-rated surge events, directly supporting design margin calculations for 24 V and 36 V systems. The SMB10J28A-M3/5B maintains this clamping performance across its qualified operating temperature range.
Is SMB10J28A-M3/5B qualified for automotive applications?
Yes, SMB10J28A-M3/5B is AEC-Q101 qualified, meaning it has passed stress tests for temperature cycling, humidity bias, mechanical shock, and other conditions defined for automotive-grade discrete semiconductors. Its M3 suffix indicates halogen-free, RoHS-compliant construction meeting JESD201 Class 2 whisker resistance. The SMB10J28A-M3/5B is explicitly designated for automotive use in Vishay's ordering nomenclature and datasheet.
What does the "M3/5B" suffix mean in SMB10J28A-M3/5B?
The "M3" suffix denotes halogen-free, RoHS-compliant construction with JESD201 Class 2 whisker resistance; "5B" specifies packaging in 13-inch diameter plastic tape and reel, with a base quantity of 3200 units. This format ensures compatibility with high-speed pick-and-place equipment and supports automated manufacturing. The SMB10J28A-M3/5B is not a variant - it is the full orderable part number reflecting material, qualification, and packaging in one identifier.
How does SMB10J28A-M3/5B compare to bidirectional TVS diodes with the same VWM?
SMB10J28A-M3/5B is unidirectional and optimized for DC rail protection where polarity is fixed - offering 1000 W PPPM versus 800 W for equivalent bidirectional parts like SMB8J28CA-M3/5B. Its lower clamping voltage (45.4 V vs. 45.4 V for SMB8J28CA-M3/5B) and tighter VBR tolerance are maintained due to dedicated unidirectional design. The SMB10J28A-M3/5B avoids unnecessary capacitance penalties associated with bidirectional symmetry, preserving signal integrity on high-speed lines.
What PCB pad layout is recommended for optimal thermal and surge performance of SMB10J28A-M3/5B?
Vishay specifies a minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad for each terminal to achieve rated 1000 W PPPM and maintain RθJA = 72 °C/W. Thermal vias under pads are recommended for high-duty-cycle applications. The SMB10J28A-M3/5B datasheet provides exact outline dimensions and mounting recommendations - deviation reduces surge capability and increases junction temperature during repeated transients.
SMB10J28A-M3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- 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-M3/5B FAQ
1.How can I place an order for SMB10J28A-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J28A-M3/5B 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 SMB10J28A-M3/5B reliable?
The price and inventory of SMB10J28A-M3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J28A-M3/5B is usually 5 days.
3.What payment methods are accepted for SMB10J28A-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J28A-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J28A-M3/5B?
SMB10J28A-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J28A-M3/5B 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 SMB10J28A-M3/5B?
For technical support, including SMB10J28A-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J28A-M3/5B requirements.
6.How does Aetrix verify that SMB10J28A-M3/5B is sourced from the original manufacturer or authorized distributors?
All SMB10J28A-M3/5B 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 SMB10J28A-M3/5B meets industry standards.
7.What is the process for return or replacement of SMB10J28A-M3/5B?
All SMB10J28A-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J28A-M3/5B, 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 SMB10J28A-M3/5B part is unused and in its original packaging.
Return procedure for SMB10J28A-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J28A-M3/5B Tags
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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