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Vishay General Semiconductor - Diodes Division SMB10J28AHE3/5B
- Part No.:
- SMB10J28AHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J28AHE3/5B.pdf
- Description:
- TVS DIODE 28VWM 45.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,328
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Product details
Overview
SMB10J28AHE3/5B 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, 1000 W peak pulse power (10/1000 µs), 22.0 A peak pulse current (IPPM), and clamps to ≤45.4 V at rated surge. Used in automotive power supply inputs and industrial sensor interfaces to protect MOSFETs and microcontrollers from inductive switching transients.
For engineers reviewing the SMB10J28AHE3/5B datasheet, SMB10J28AHE3/5B pinout, SMB10J28AHE3/5B application, or SMB10J28AHE3/5B equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 72 °C/W), clamping behavior under 10/1000 µs surges, and automotive-grade packaging details - all critical for ESD/surge hardening in production designs.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: it remains high-impedance below 28 V (VWM), triggers avalanche conduction at 31.1–34.4 V (VBR), and limits transient voltage to ≤45.4 V at 22.0 A (VC). Its glass-passivated junction ensures stable breakdown and low leakage (<1.0 µA at VWM).
Designed for surface-mount automated assembly, it meets MSL Level 1 (260 °C reflow peak) and AEC-Q101 stress testing for automotive under-hood and body electronics. Thermal performance is defined by RθJA = 72 °C/W (on 0.2" × 0.2" copper pads) and RθJL = 20 °C/W, enabling reliable operation up to TJ = +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 28 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC rail margin for 24 V systems. |
| VBR (min/max) | 31.1 V / 34.4 V at IT = 1 mA - Tight breakdown window ensures predictable turn-on across temperature and unit variation. |
| VC @ IPPM | ≤45.4 V at 22.0 A (10/1000 µs) - Clamping voltage directly determines protected IC's maximum stress during surge events. |
| PPPM | 1000 W (10/1000 µs) - Peak energy-handling capability for single-event transients like load dump or ISO 7637-2 Pulse 5a. |
| ID @ VWM | ≤1.0 µA - Ultra-low leakage preserves battery life and avoids false triggering in high-impedance sensing paths. |
| TJ max. | +150 °C - Enables placement near heat sources (e.g., power converters) without derating in automotive environments. |
| AEC-Q101 | Qualified - Validated for automotive applications including engine control, ADAS sensors, and infotainment power supplies. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to ground or low-side return path; enables clamping of positive transients on cathode-connected lines. |
| Cathode | Current exit terminal during reverse-biased clamping | Connected to protected line (e.g., 24 V rail); conducts surge current to ground when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, humidity bias, and mechanical shock per AEC standard. |
| Glass passivated junction | Ensures stable VBR over time and temperature, low leakage, and robustness against moisture-induced degradation. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving clamping precision for sensitive 3.3 V/5 V logic interfaces. |
| MSL Level 1 rating | Supports standard SMT reflow profiles up to 260 °C peak without preconditioning or baking. |
| UL 94 V-0 molding compound | Provides flame-retardant encapsulation required for automotive and industrial safety compliance. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 24 V power input of an automotive body control module (BCM) against load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between VIN and GND to clamp transients above 28 V before they reach downstream DC/DC converters and MCU power rails. Use Value: Limits peak voltage to ≤45.4 V during 1000 W surges, preventing damage to 36 V-rated input stages and ensuring system reset-free operation. |
Use Scenario: Safeguarding analog output (0–10 V) of a pressure sensor in factory automation equipment exposed to relay coil switching noise. IC Role / Device Role / Timing Role: TVS connected across sensor output and ground to absorb inductive kickback from nearby solenoids and contactors. Use Value: Sub-µA leakage at 28 V avoids loading the high-impedance sensor output, while 22.0 A IPPM handles repetitive 10/1000 µs spikes without degradation. |
| Telecom DC Power Feeding | OBD-II Interface Protection |
|
Use Scenario: Surge protection on -48 V DC feeding lines in telecom base station remote radio units (RRUs) subject to lightning-induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS installed on the negative rail side to clamp positive-going transients relative to chassis ground. Use Value: 1000 W PPPM and 150 °C TJ max enable sustained operation in sealed outdoor enclosures with minimal heatsinking. |
Use Scenario: Hardening the CAN_H/CAN_L and K-line signals of an OBD-II diagnostic port against ESD (IEC 61000-4-2) and vehicle battery connection transients. IC Role / Device Role / Timing Role: Discrete TVS pair (one per line) referenced to chassis ground, leveraging fast response (<1 ns) and low clamping voltage. Use Value: 45.4 V VC ensures protected transceivers (e.g., TJA1042) remain within absolute maximum ratings during 30 A 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-E3/5B | 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-E3/5B if cost sensitivity outweighs automotive qualification requirements and halogen-free material is not needed. |
| SMCJ28AHE3/5B | Same AEC-Q101 qualification and VWM/VBR specs, but larger SMC (DO-214AB) package with 1500 W PPPM and higher IPPM (33.0 A). | Higher surge capacity suits harsher environments (e.g., engine bay), but requires larger PCB footprint and higher thermal mass. | Choose SMCJ28AHE3/5B when system-level surge tests exceed 1000 W or when layout allows larger SMC footprint for enhanced reliability margin. |
Compared with SMBJ28A-E3/5B, SMB10J28AHE3/5B adds AEC-Q101 qualification and halogen-free compliance for automotive use; compared with SMCJ28AHE3/5B, it trades 50 % higher surge rating for 30 % smaller SMB footprint and lower thermal mass - ideal for space-constrained modules requiring automotive grade assurance.
Availability
SMB10J28AHE3/5B is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and telecom DC power feeding requiring stable component supply, AEC-Q101 traceability, and consistent surge performance across production batches.
Supply support for SMB10J28AHE3/5B 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, automotive qualification, and high-power density packaging.
The SMB10J series targets high-reliability transient suppression in space-constrained automotive and industrial applications, combining AEC-Q101 validation, low-profile SMB packaging, and precise clamping for 12 V/24 V system protection.
FAQ
What is the clamping voltage of SMB10J28AHE3/5B at its rated peak pulse current?
The SMB10J28AHE3/5B clamps to a maximum of 45.4 V when subjected to its rated 22.0 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured at TA = 25 °C with device mounted on 0.2" × 0.2" copper pads per JEDEC guidelines. The clamping voltage directly determines the maximum stress imposed on downstream components during surge events, making it a critical parameter for system-level overvoltage design margins.
Is SMB10J28AHE3/5B qualified for automotive applications?
Yes, SMB10J28AHE3/5B is AEC-Q101 qualified, as confirmed by Vishay's official documentation (Document Number: 88422, Revision: 09-Jan-2024). The "HE3" suffix explicitly denotes RoHS-compliant and AEC-Q101 qualified construction. This qualification covers stress tests including temperature cycling, high-temperature operating life, and mechanical shock - validating its suitability for automotive body electronics, ADAS sensors, and power distribution modules.
What is the maximum operating junction temperature for SMB10J28AHE3/5B?
The SMB10J28AHE3/5B has a maximum operating junction temperature (TJ max.) of +150 °C, as specified in Vishay's datasheet. This rating supports reliable operation in under-hood automotive environments and industrial enclosures with elevated ambient temperatures. Derating of peak pulse power begins above TA = 25 °C per Figure 2 in the datasheet, and thermal design must account for RθJA = 72 °C/W (on recommended pad layout) to maintain safe junction temperatures under sustained surge conditions.
Does SMB10J28AHE3/5B have bidirectional capability?
No, SMB10J28AHE3/5B is a unidirectional transient voltage suppressor. Its polarity is marked by a cathode band, and it conducts only during reverse-bias overvoltage events. Bidirectional variants in the same family carry "C" in the part number (e.g., SMB10J28CA), which are functionally distinct devices with symmetrical breakdown in both directions. Using SMB10J28AHE3/5B for AC or bipolar signal protection would require external circuitry or a different device.
What packaging format does SMB10J28AHE3/5B ship in?
SMB10J28AHE3/5B ships in 13-inch diameter plastic tape and reel format, with a base quantity of 3200 units per reel (ordering code suffix "/5B"). The device uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards, and meets JESD 201 Class 2 whisker resistance. This packaging supports high-volume automated pick-and-place assembly in automotive and industrial manufacturing lines.
SMB10J28AHE3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB10J28AHE3/5B FAQ
1.How can I place an order for SMB10J28AHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J28AHE3/5B 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 SMB10J28AHE3/5B reliable?
The price and inventory of SMB10J28AHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J28AHE3/5B is usually 5 days.
3.What payment methods are accepted for SMB10J28AHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J28AHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J28AHE3/5B?
SMB10J28AHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J28AHE3/5B 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 SMB10J28AHE3/5B?
For technical support, including SMB10J28AHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J28AHE3/5B requirements.
6.How does Aetrix verify that SMB10J28AHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMB10J28AHE3/5B 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 SMB10J28AHE3/5B meets industry standards.
7.What is the process for return or replacement of SMB10J28AHE3/5B?
All SMB10J28AHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J28AHE3/5B, 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 SMB10J28AHE3/5B part is unused and in its original packaging.
Return procedure for SMB10J28AHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J28AHE3/5B Tags
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