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Vishay General Semiconductor - Diodes Division SMB10J28AHE3_B/I
- Part No.:
- SMB10J28AHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J28AHE3_B/I.pdf
- Description:
- 1KW,28V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,295
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Product details
Overview
SMB10J28AHE3_B/I 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, 1000 W peak pulse power (10/1000 µs), 22.0 A peak pulse current (IPPM), and clamps transients to ≤45.4 V. It is AEC-Q101 qualified and used in automotive power supply input stages.
For engineers reviewing the SMB10J28AHE3_B/I datasheet, SMB10J28AHE3_B/I pinout, SMB10J28AHE3_B/I application, or SMB10J28AHE3_B/I equivalent, key selection criteria include clamping voltage under 45.4 V at 22 A, unidirectional polarity with cathode band marking, AEC-Q101 qualification for automotive use, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a voltage-clamping overvoltage protection device, leveraging an avalanche breakdown mechanism to divert transient energy away from sensitive downstream circuitry. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM = 28 V), while its low incremental surge resistance enables effective clamping during fast-rising transients (e.g., ISO 7637-2 load dump or inductive switching spikes).
The SMB10J28AHE3_B/I is rated for continuous operation from –55 °C to +150 °C junction temperature and meets MSL level 1 per J-STD-020 (peak reflow ≤260 °C). Its thermal resistance (RθJL = 20 °C/W) supports reliable power dissipation when mounted on minimum recommended 5.0 mm × 5.0 mm copper pads per terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 28 V - maximum continuous reverse operating voltage before significant leakage; defines safe DC rail rating |
| VBR min/max | 31.1 V / 34.4 V at IT = 1 mA - guaranteed avalanche onset range; ensures consistent turn-on across production lots |
| VC @ IPPM | ≤45.4 V at IPPM = 22.0 A - clamping voltage under full 1000 W surge; determines protected IC's maximum stress voltage |
| PPPM | 1000 W (10/1000 µs waveform) - peak transient energy handling capacity; suitable for automotive load-dump immunity |
| ID @ VWM | ≤1.0 µA - ultra-low reverse leakage at 28 V; minimizes standby power loss in battery-critical systems |
| TJ max | +150 °C - extended junction temperature rating enables under-hood automotive deployment without derating |
| AEC-Q101 | Qualified - validated for automotive electronic modules per stress test requirements (HTOL, TC, HTRB, etc.) |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, molded plastic case with matte tin-plated leads; polarity indicated by cathode band at one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground during overvoltage events |
| Anode (non-banded end) | Reference/return path | Typically tied to system ground or low-impedance return plane; completes clamping current path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, high-temp operating life, and biased HAST |
| Glass-passivated junction | Ensures stable VBR tolerance and long-term parameter stability under thermal and humidity stress |
| Low-profile SMB package | Enables high-density PCB layout and compatibility with standard SMT pick-and-place equipment |
| MSL Level 1 rating | Allows unlimited floor life and single-reflow processing at up to 260 °C peak without moisture-induced damage |
| UL 94 V-0 molding compound | Provides flame-retardant housing essential for automotive and industrial safety compliance |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 24 V battery-fed ECUs against ISO 7637-2 pulse 1 (inductive switch-off) and pulse 5a (load dump). IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between power rail and chassis ground, absorbing >1000 W surges within nanoseconds. Use Value: Limits rail voltage to ≤45.4 V during 22 A transients, preventing damage to downstream PMICs and microcontrollers rated for 36 V absolute max. |
Use Scenario: Safeguarding analog output lines of pressure/temperature sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional TVS (cathode grounded) shunting ESD and cable discharge events on 0–10 V or 4–20 mA loops. Use Value: Sub-1 µA leakage at 28 V avoids loading precision sensor outputs; 45.4 V clamping prevents op-amp input stage latch-up. |
| Telecom DC Power Feeds | Consumer Appliance Motor Drive Inputs |
|
Use Scenario: Surge protection on -48 V telecom rectifier outputs exposed to lightning-induced surges on long feeder lines. IC Role / Device Role / Timing Role: Unidirectional TVS connected cathode-to-rail, anode-to-ground to clamp negative-going transients on negative supply rails. Use Value: 1000 W rating handles IEC 61000-4-5 combination wave (1.2/50 µs voltage, 8/20 µs current); 150 °C TJ rating supports enclosed cabinet operation. |
Use Scenario: Input-stage protection for BLDC motor controllers in smart washing machines subjected to back-EMF spikes during commutation. IC Role / Device Role / Timing Role: TVS placed across H-bridge DC bus inputs to clamp inductive kickback from motor windings. Use Value: Clamps 22 A transients to ≤45.4 V, protecting 60 V-rated MOSFETs and gate drivers; AEC-Q101 qualification ensures robustness in high-vibration environments. |
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-E3/52 | Same VWM (28 V), VBR (31.1–34.4 V), and PPPM (1000 W), but commercial-grade (non-AEC-Q101) and RoHS-compliant only (no halogen-free option) | Lacks automotive qualification; suitable for industrial/commercial power supplies where AEC-Q101 is not mandated | Select SMBJ28A-E3/52 for cost-sensitive non-automotive designs requiring identical electrical specs but no automotive reliability validation |
| SMCJ28AHE3_A/H | Higher power rating (1500 W), larger SMC (DO-214AB) package, same VWM/VBR/VC specs, AEC-Q101 qualified | Requires larger PCB footprint and higher thermal mass; used where >1000 W surge margin is required (e.g., heavy-duty truck ECUs) | Choose SMCJ28AHE3_A/H when system-level surge testing exceeds 1000 W or when design margin requires ≥1500 W clamping capability |
Compared with SMBJ28A-E3/52, SMB10J28AHE3_B/I adds AEC-Q101 qualification and halogen-free construction for automotive use; compared with SMCJ28AHE3_A/H, it trades 500 W peak power for smaller SMB footprint and lower thermal mass-ideal for space-constrained automotive modules needing certified reliability.
Availability
SMB10J28AHE3_B/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom power feed applications requiring stable component supply, AEC-Q101 compliance, and high-reliability transient suppression.
Supply support for SMB10J28AHE3_B/I 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, high-power-density solutions.
The SMB10JxxA series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for automotive and industrial surge immunity-delivering robust clamping performance in compact surface-mount packages with AEC-Q101 validation.
FAQ
What is the clamping voltage of SMB10J28AHE3_B/I at its rated peak pulse current?
The SMB10J28AHE3_B/I has a maximum clamping voltage (VC) of 45.4 V when subjected to its rated peak pulse current (IPPM) of 22.0 A using the 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 standards and guarantees that downstream components see no more than 45.4 V during a full 1000 W transient event. The SMB10J28AHE3_B/I maintains this clamping performance across its qualified operating temperature range of –55 °C to +150 °C.
Is SMB10J28AHE3_B/I suitable for automotive applications?
Yes, SMB10J28AHE3_B/I is AEC-Q101 qualified and explicitly intended for automotive use. Its qualification covers high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing-ensuring reliability in engine control units, body control modules, and ADAS power supplies. The "HE3" suffix denotes RoHS-compliant and AEC-Q101 qualified construction, and the "B/I" packaging indicates 13-inch tape-and-reel delivery optimized for automotive SMT lines. SMB10J28AHE3_B/I meets all requirements for under-hood and cabin-mounted electronics.
How does the SMB10J28AHE3_B/I differ from the SMBJ28A series?
The SMB10J28AHE3_B/I shares identical electrical specifications (VWM = 28 V, VBR = 31.1–34.4 V, VC ≤ 45.4 V, PPPM = 1000 W) with the SMBJ28A series but adds AEC-Q101 qualification, halogen-free molding compound, and enhanced process controls for automotive traceability. Unlike the commercial SMBJ28A-E3/52, the SMB10J28AHE3_B/I undergoes additional stress screening and lot-level documentation required for Tier 1 automotive supply chains. Both use the same SMB (DO-214AA) package, but SMB10J28AHE3_B/I is designated for mission-critical automotive deployments.
What is the reverse leakage current of SMB10J28AHE3_B/I at its stand-off voltage?
The SMB10J28AHE3_B/I exhibits a maximum reverse leakage current (ID) of 1.0 µA when biased at its rated stand-off voltage (VWM) of 28 V and tested at 25 °C. This ultra-low leakage ensures minimal power drain in always-on automotive modules such as telematics or alarm systems. Leakage remains well below 10 µA across the full operating temperature range, supporting battery-life-critical designs. The SMB10J28AHE3_B/I achieves this via a glass-passivated junction that stabilizes surface conduction paths.
What PCB pad layout is recommended for optimal thermal and surge performance of SMB10J28AHE3_B/I?
Vishay specifies a minimum copper pad area of 0.2" × 0.2" (5.0 mm × 5.0 mm) per terminal for SMB10J28AHE3_B/I to achieve rated 1000 W pulse power and maintain junction temperature within limits. These pads must be directly connected to internal ground/power planes via multiple thermal vias. The SMB10J28AHE3_B/I datasheet (Document 88422) provides exact outline dimensions and recommends solder mask defined pads to prevent bridging. Deviating from this layout reduces surge current handling and risks thermal runaway during repetitive transients.
SMB10J28AHE3_B/I 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:
- 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)
SMB10J28AHE3_B/I FAQ
1.How can I place an order for SMB10J28AHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J28AHE3_B/I 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 SMB10J28AHE3_B/I reliable?
The price and inventory of SMB10J28AHE3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J28AHE3_B/I is usually 5 days.
3.What payment methods are accepted for SMB10J28AHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J28AHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J28AHE3_B/I?
SMB10J28AHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J28AHE3_B/I 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 SMB10J28AHE3_B/I?
For technical support, including SMB10J28AHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J28AHE3_B/I requirements.
6.How does Aetrix verify that SMB10J28AHE3_B/I is sourced from the original manufacturer or authorized distributors?
All SMB10J28AHE3_B/I 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 SMB10J28AHE3_B/I meets industry standards.
7.What is the process for return or replacement of SMB10J28AHE3_B/I?
All SMB10J28AHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J28AHE3_B/I, 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 SMB10J28AHE3_B/I part is unused and in its original packaging.
Return procedure for SMB10J28AHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J28AHE3_B/I Tags
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