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Vishay General Semiconductor - Diodes Division SMB10J28HE3/5B
- Part No.:
- SMB10J28HE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J28HE3/5B.pdf
- Description:
- TVS DIODE 28VWM 50VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,101
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Product details
Overview
SMB10J28HE3/5B from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for high-energy surge protection on power 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. It is AEC-Q101 qualified and used in automotive power rail and sensor interface protection.
For engineers reviewing the SMB10J28HE3/5B datasheet, SMB10J28HE3/5B pinout, SMB10J28HE3/5B application, or SMB10J28HE3/5B equivalent, key selection criteria include clamping performance under 22 A surge, thermal resistance (RθJA = 72 °C/W), AEC-Q101 qualification status, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamping device that remains high-impedance below VWM (28 V) and rapidly transitions to low-impedance conduction above VBR (min. 31.1 V) to shunt transient energy. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time (<1 ns).
The device is rated for 1000 W peak pulse power (10/1000 μs), 100 A non-repetitive forward surge current (8.3 ms half-sine), and operates across -55 °C to +150 °C junction temperature range. Its DO-214AA package supports surface-mount reflow per J-STD-020 MSL level 1 (260 °C peak).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 28 V - Maximum continuous reverse operating voltage before significant conduction begins |
| VBR (Breakdown Voltage) | 31.1–34.4 V at 1 mA - Confirmed minimum/maximum threshold where avalanche conduction initiates |
| VC (Clamping Voltage) | 45.4 V at IPPM = 22.0 A - Maximum voltage seen by protected circuit during full-rated 10/1000 μs surge |
| PPPM (Peak Pulse Power) | 1000 W - Energy-handling capacity under standardized 10/1000 μs transient waveform |
| IT (Test Current) | 1.0 mA - Standard current used to measure and specify VBR tolerance band |
| RθJA | 72 °C/W - Thermal resistance from junction to ambient, critical for derating above 25 °C ambient |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, molded plastic case with matte tin-plated leads; cathode indicated by color band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry (unidirectional operation) | Connected to lower-potential side of protected line; conducts during positive transients when cathode is at higher potential |
| Cathode | Reverse-biased terminal / clamping reference | Marked with band; connected to higher-potential rail (e.g., VBUS); defines polarity and clamping direction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and body electronics requiring extended temperature and life-cycle reliability |
| Glass passivated junction | Ensures stable VBR tolerance, low leakage (<1.0 μA), and long-term parameter stability under thermal stress |
| Low incremental surge resistance | Enables tighter clamping (VC − VBR = ~14.3 V), minimizing overvoltage stress on downstream ICs like MCUs or CAN transceivers |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking; compatible with high-volume automated assembly |
| RoHS-compliant & whisker-tested (JESD 201 Class 2) | Meets automotive supply chain requirements for lead-free soldering and long-term interconnect reliability |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V battery-fed ECUs against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and GND to clamp surges up to 1000 W without failure. Use Value: Limits transient voltage to ≤45.4 V, safeguarding 3.3 V/5 V regulators and microcontrollers downstream. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS on signal line to ground, responding in <1 ns to sub-100 ns ESD events. Use Value: Prevents latch-up or damage to precision ADC inputs while maintaining signal integrity via minimal leakage (<1.0 μA). |
| Telecom DC Power Input Protection | Motor Drive Gate Driver Protection |
Use Scenario: Safeguarding PoE-powered equipment front-end against induced lightning surges on 48 V DC input. IC Role / Device Role / Timing Role: Primary clamping device on DC input rail, coordinated with upstream fuse and filter inductors. Use Value: Absorbs 1000 W surges without degradation, enabling compliance with IEC 61000-4-5 Level 4 (4 kV line-earth). |
Use Scenario: Protecting high-side N-channel MOSFET gate drivers from Miller-induced voltage spikes during switching. IC Role / Device Role / Timing Role: Fast-acting unidirectional clamp referenced to driver IC's VDD, limiting gate-source overvoltage. Use Value: Clamps gate transients to ≤45.4 V, preventing oxide breakdown in logic-level MOSFETs with 20 V VGS(max). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ28A-E3/5B | Same DO-214AA package, identical VWM/VBR/VC ratings, but not AEC-Q101 qualified | Suitable for commercial/industrial use only; lacks automotive reliability validation | Select when AEC-Q101 is not required and cost optimization is prioritized |
| SMCJ28AHE3/5B | DO-214AB (SMC) package; same electrical specs but higher thermal mass and RθJA = 30 °C/W | Better power dissipation capability; requires larger PCB pad area (≥10 mm² per terminal) | Choose for higher ambient temperature environments (>85 °C) or repeated surge exposure |
Compared with SMB10J28HE3/5B, SMBJ28A-E3/5B offers identical clamping performance at lower qualification cost, while SMCJ28AHE3/5B trades smaller footprint for superior thermal robustness-enabling longer surge duty cycles in motor drive or industrial power systems.
Availability
SMB10J28HE3/5B is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom DC power inputs requiring stable component supply, AEC-Q101 compliance, and high-reliability surge immunity.
Supply support for SMB10J28HE3/5B 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, and protection devices with emphasis on reliability, efficiency, and automotive-grade qualification.
The SMB10J series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-power-density transient suppression in space-constrained automotive and industrial applications where fast response and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of SMB10J28HE3/5B at its rated peak pulse current?
The SMB10J28HE3/5B has a maximum clamping voltage (VC) of 45.4 V when subjected to its rated peak pulse current (IPPM) of 22.0 A under a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 standards and ensures downstream components see no more than 45.4 V during worst-case surge events. The SMB10J28HE3/5B maintains this clamping performance across its full operating temperature range.
Is SMB10J28HE3/5B suitable for automotive applications?
Yes, SMB10J28HE3/5B is AEC-Q101 qualified, meaning it has passed rigorous stress tests including temperature cycling, high-temperature reverse bias, and ESD per JESD22 standards. Its construction-glass-passivated junction, matte tin plating, and MSL Level 1 rating-supports under-hood and chassis-mounted use. The SMB10J28HE3/5B is explicitly recommended for engine control modules, body controllers, and ADAS sensor power rails.
How does the SMB10J28HE3/5B differ from the SMBJ28A-E3/5B?
The SMB10J28HE3/5B and SMBJ28A-E3/5B share identical electrical specifications (VWM = 28 V, VBR = 31.1–34.4 V, VC = 45.4 V) and DO-214AA package dimensions, but only the SMB10J28HE3/5B carries AEC-Q101 qualification and JESD 201 Class 2 whisker testing. The "HE3" suffix denotes automotive-grade screening, whereas "E3" indicates commercial grade. Both are RoHS-compliant, but SMB10J28HE3/5B is required for Tier 1 automotive BOMs.
What is the thermal resistance of SMB10J28HE3/5B, and how does it affect layout?
The SMB10J28HE3/5B 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 standard JEDEC 51-7 test conditions. To maintain safe junction temperatures under repeated surges, PCB layout must provide adequate copper area and avoid thermal bottlenecks. Derating curves in the SMB10J28HE3/5B datasheet show >50% power reduction above 75 °C ambient.
Can SMB10J28HE3/5B be used in bi-directional protection circuits?
No, SMB10J28HE3/5B is a unidirectional TVS diode, identifiable by its cathode band marking and specified parameters (e.g., IFSM = 100 A, VF = 3.5 V at 50 A). For bi-directional protection-such as AC line or differential signal clamping-Vishay's SMB8J28CA or SMBJ28CA variants must be used. Using SMB10J28HE3/5B in reverse-biased configurations risks permanent damage due to lack of symmetrical avalanche structure.
SMB10J28HE3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 28V
- Voltage - Breakdown (Min):
- 31.1V
- Voltage - Clamping (Max) @ Ipp:
- 50V
- Current - Peak Pulse (10/1000µs):
- 20A
- Power - Peak Pulse:
- 1000W (1kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB10J28HE3/5B FAQ
1.How can I place an order for SMB10J28HE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J28HE3/5B 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 SMB10J28HE3/5B reliable?
The price and inventory of SMB10J28HE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J28HE3/5B is usually 5 days.
3.What payment methods are accepted for SMB10J28HE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J28HE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J28HE3/5B?
SMB10J28HE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J28HE3/5B 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 SMB10J28HE3/5B?
For technical support, including SMB10J28HE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J28HE3/5B requirements.
6.How does Aetrix verify that SMB10J28HE3/5B is sourced from the original manufacturer or authorized distributors?
All SMB10J28HE3/5B 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 SMB10J28HE3/5B meets industry standards.
7.What is the process for return or replacement of SMB10J28HE3/5B?
All SMB10J28HE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J28HE3/5B, 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 SMB10J28HE3/5B part is unused and in its original packaging.
Return procedure for SMB10J28HE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J28HE3/5B Tags
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