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Vishay General Semiconductor - Diodes Division SMBG28AHE3/52
- Part No.:
- SMBG28AHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG28AHE3/52.pdf
- Description:
- TVS DIODE 28VWM 45.4VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,720
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Product details
Overview
SMBG28AHE3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for robust overvoltage protection of sensitive electronics. It features a 28 V stand-off voltage (VWM), 31.1–34.4 V breakdown voltage (VBR) at 1 mA, 45.4 V maximum clamping voltage (VC) at 13.2 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - deployed in automotive power line and industrial sensor interface protection.
For engineers reviewing the SMBG28AHE3/52 datasheet, SMBG28AHE3/52 pinout, SMBG28AHE3/52 application, or SMBG28AHE3/52 equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 150 °C max junction temperature, low incremental surge resistance, 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 protection device in series with power or signal lines, activating when transient voltage exceeds its breakdown threshold to shunt surge energy to ground. Its glass-passivated junction ensures stable leakage performance (<1.0 μA at VWM) and fast response time (<1 ns), while the low Rsurge enables effective suppression of high-current transients without excessive voltage overshoot.
The SMBG28AHE3/52 is rated for 100 A non-repetitive forward surge current (8.3 ms half-sine), supports -55 °C to +150 °C operating range, and meets J-STD-020 MSL Level 1 with 260 °C reflow peak - confirming suitability for high-reliability automotive and industrial PCB assemblies requiring long-term stability under thermal cycling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 28 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working limit. |
| VBR (min/max) | 31.1 V / 34.4 V at 1 mA - Confirmed breakdown range ensuring reliable turn-on margin above VWM. |
| VC @ IPPM | 45.4 V at 13.2 A - Clamped voltage during 600 W transient; determines protected circuit's maximum stress level. |
| PPPM | 600 W - Peak pulse power handling with 10/1000 μs waveform; validates immunity to IEC 61000-4-5 surge events. |
| IFSM | 100 A - Single half-sine surge rating (8.3 ms); supports protection against load dump and inductive switching spikes. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive or high-ambient industrial environments. |
| Leakage ID | ≤1.0 μA at 28 V - Low reverse leakage preserves system efficiency and prevents false triggering in low-power circuits. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, low-profile gull-wing lead frame with matte tin-plated terminals solderable per J-STD-002 and JESD 22-B102; polarity marked by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Line side (for unidirectional configuration) | Connected to protected line; conducts surge current toward cathode during overvoltage event. |
| Cathode | Ground/reference side | Connected to system ground; establishes clamping reference and provides low-impedance path for transient energy dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics, with extended temperature and reliability testing. |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage across life cycle, critical for long-term field reliability. |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 (4 kV/2 Ω) surges without degradation when mounted on recommended 5.0 mm × 5.0 mm copper pads. |
| MSL Level 1 | Zero floor life limitation and 260 °C peak reflow compatibility enable standard SMT assembly without baking or special handling. |
| Low profile SMBG package | Height ≤0.030" (0.76 mm) allows use in space-constrained modules such as ADAS sensors and infotainment head units. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump transients up to 35 V and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges before they reach downstream regulators and microcontrollers. Use Value: Limits clamped voltage to 45.4 V at 13.2 A, preventing damage to 36 V-rated input stages while maintaining AEC-Q101 compliance. | Use Scenario: Shielding analog output lines of pressure/temperature sensors from ESD and inductive coupling in factory automation PLCs. IC Role / Device Role / Timing Role: Fast-response clamping device on 4–20 mA or 0–10 V signal paths, positioned adjacent to connector entry points. Use Value: Sub-1 ns response and <1.0 μA leakage preserve signal integrity and measurement accuracy in precision 24-bit ADC systems. |
| Telecom Power Supply Input | Consumer Appliance Motor Control |
Use Scenario: Safeguarding AC/DC adapter inputs against lightning-induced surges in PoE-powered network equipment. IC Role / Device Role / Timing Role: Primary-stage TVS on DC input rail upstream of DC-DC converters, coordinated with MOVs for multi-level protection. Use Value: 600 W rating and 100 A IFSM support coordination with upstream fuses and enable robust Class II insulation compliance. | Use Scenario: Suppressing back-EMF spikes from brushed DC motors in smart home appliances (e.g., washing machine drive boards). IC Role / Device Role / Timing Role: Unidirectional suppressor across motor terminals or H-bridge outputs to absorb inductive kickback. Use Value: 45.4 V clamping voltage prevents MOSFET avalanche failure while enabling compact layout due to SMBG footprint. |
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), but lower PPPM = 600 W (same rating), higher VC = 48.4 V at 12.4 A; SMBJ package (DO-214AB), slightly larger footprint. | Less suitable for ultra-low-clamp designs; requires PCB pad revision due to different outline and thermal pad geometry. | Select when legacy SMBJ layout exists and AEC-Q101 is not required. |
| SMCJ28AHE3/52 | Same VWM/VBR specs, but higher PPPM = 1500 W and VC = 49.9 V at 30.1 A; SMC package (DO-214AB), larger size and higher thermal mass. | Better for high-energy surges (e.g., 10/1000 μs >20 A), but incompatible with space-constrained SMBG layouts. | Select when system-level surge testing exceeds 600 W requirements and board area permits SMC footprint. |
Compared with SMBJ28A-E3/52 and SMCJ28AHE3/52, the SMBG28AHE3/52 delivers identical 28 V standoff and AEC-Q101 qualification in the smallest possible surface-mount TVS form factor, making it optimal for next-generation automotive modules where board space and qualification rigor are both critical.
Availability
SMBG28AHE3/52 is available at Aetrix Electronics and suitable for automotive power line protection, industrial sensor interface hardening, telecom power supply input staging, and consumer appliance motor control requiring stable component supply and full traceability.
Supply support for SMBG28AHE3/52 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-volume manufacturability.
The SMBG-series TRANSZORB® TVS line targets high-reliability transient suppression in automotive, industrial, and telecom infrastructure - engineered for AEC-Q101 compliance, low-profile SMT integration, and consistent clamping performance across temperature and life cycle.
FAQ
What is the maximum clamping voltage of SMBG28AHE3/52 and under what test condition?
The SMBG28AHE3/52 has a maximum clamping voltage (VC) of 45.4 V, measured at a peak pulse current (IPPM) of 13.2 A using the standardized 10/1000 μs double-exponential waveform. This value is guaranteed per the Vishay datasheet and reflects worst-case clamping behavior during surge events, directly defining the voltage stress imposed on downstream components during protection activation. The SMBG28AHE3/52 maintains this clamping performance across its full operating temperature range.
Is SMBG28AHE3/52 qualified for automotive applications?
Yes, SMBG28AHE3/52 is explicitly AEC-Q101 qualified, as confirmed by the "HE3" suffix in its part number and documented in Vishay's official datasheet (Document Number: 88456, Revision: 09-Jan-2024). This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD, validating its use in automotive subsystems such as body control modules, lighting drivers, and sensor interfaces. The SMBG28AHE3/52 meets all requirements for under-hood and cabin-mounted electronics.
What does the "HE3" suffix indicate in SMBG28AHE3/52?
The "HE3" suffix in SMBG28AHE3/52 denotes RoHS-compliant construction with AEC-Q101 qualification and matte tin-plated leads meeting J-STD-002 solderability standards. Per Vishay's ordering information table, "HE3" specifically identifies the industrial-grade, AEC-Q101-qualified variant in 7" tape-and-reel packaging (code "52"). This distinguishes it from non-automotive variants like "E3" (RoHS, non-AEC-Q101) and "HM3" (halogen-free + AEC-Q101). The SMBG28AHE3/52 is therefore traceable to automotive-grade process controls and testing.
What is the thermal resistance of SMBG28AHE3/52 and how does it affect PCB layout?
The SMBG28AHE3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes no internal layer copper pours; adding thermal vias or larger copper areas reduces RθJA significantly. For reliable 600 W pulse handling, designers must adhere to Vishay's specified pad layout to avoid thermal runaway during repetitive surges - undersized pads will cause excessive junction temperature rise in the SMBG28AHE3/52.
Can SMBG28AHE3/52 be used in bidirectional configurations?
No, SMBG28AHE3/52 is a unidirectional TVS diode, as indicated by the "A" (not "CA") suffix and the presence of a cathode band marking. Bidirectional variants in the same family use the "CA" suffix (e.g., SMBG28CA) and lack polarity marking. Attempting to use SMBG28AHE3/52 in bidirectional applications would result in forward conduction during negative transients, potentially damaging the device or failing to protect the circuit. For symmetric surge protection, select SMBG28CAHE3/52 instead of SMBG28AHE3/52.
SMBG28AHE3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-215AA, SMB Gull Wing
- 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):
- 13.2A
- Power - Peak Pulse:
- 600W
- 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 (SMBG)
SMBG28AHE3/52 FAQ
1.How can I place an order for SMBG28AHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG28AHE3/52 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 SMBG28AHE3/52 reliable?
The price and inventory of SMBG28AHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG28AHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBG28AHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG28AHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG28AHE3/52?
SMBG28AHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG28AHE3/52 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 SMBG28AHE3/52?
For technical support, including SMBG28AHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG28AHE3/52 requirements.
6.How does Aetrix verify that SMBG28AHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG28AHE3/52 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 SMBG28AHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBG28AHE3/52?
All SMBG28AHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG28AHE3/52, 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 SMBG28AHE3/52 part is unused and in its original packaging.
Return procedure for SMBG28AHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG28AHE3/52 Tags
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