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Vishay General Semiconductor - Diodes Division SMBG15HE3/52
- Part No.:
- SMBG15HE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG15HE3/52.pdf
- Description:
- TVS DIODE 15VWM 26.9VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,308
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Product details
Overview
SMBG15HE3/52 from Vishay General Semiconductor is a uni-directional transient voltage suppressor (TVS) diode in DO-215AA (SMBG) package, designed for clamping inductive switching transients and ESD events on power rails and signal lines. It features 15 V stand-off voltage (VWM), 16.7–18.5 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 μs), 24.4 V clamping voltage (VC) at 24.6 A IPPM, and AEC-Q101 qualification for automotive electronics protection.
For engineers reviewing the SMBG15HE3/52 datasheet, SMBG15HE3/52 pinout, SMBG15HE3/52 application, or SMBG15HE3/52 equivalent, this page delivers verified electrical parameters, package dimensions, clamping behavior under surge conditions, thermal resistance data (RθJA = 100 °C/W), and validated automotive-grade alternatives - all critical for robust overvoltage protection design in engine control units, body electronics, and ADAS sensor interfaces.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR, it avalanches to divert surge current away from downstream ICs or MOSFETs. Its glass-passivated junction ensures stable breakdown and low leakage (≤1.0 μA at VWM), while the DO-215AA package supports automated SMT placement and meets MSL Level 1 (260 °C reflow).
Designed for single-polarity DC rail protection, SMBG15HE3/52 is not suitable for AC or bi-directional applications - those require CA-suffix variants (e.g., SMBG15CA). Its 100 A IFSM rating (8.3 ms half-sine) and 150 °C max junction temperature support high-energy transient suppression in automotive environments with thermal cycling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - maximum continuous reverse operating voltage before clamping begins; sets safe margin below system rail (e.g., 12 V automotive battery). |
| VBR (min/max) | 16.7 V / 18.5 V at 1 mA - guaranteed avalanche onset range; ensures predictable turn-on without premature conduction. |
| VC @ IPPM | 24.4 V at 24.6 A - clamped voltage during 600 W 10/1000 μs surge; defines worst-case stress on protected circuitry. |
| PPPM | 600 W - peak pulse power handling per JEDEC standard; validates capability against ISO 7637-2 Pulse 1/2/5a surges. |
| ID @ VWM | ≤1.0 μA - ultra-low reverse leakage at rated stand-off; prevents excessive quiescent current in always-on modules. |
| TJ max | +150 °C - enables operation in under-hood automotive locations; requires thermal pad layout per datasheet fig. 4. |
| RθJA | 100 °C/W - junction-to-ambient thermal resistance on 5.0 mm × 5.0 mm copper pads; informs derating above 25 °C ambient. |
Pinout & Package
Package: DO-215AA (SMBG), surface-mount gull-wing, RoHS-compliant, AEC-Q101 qualified. Matte tin-plated leads, MSL Level 1, 260 °C peak reflow. Cathode indicated by band on cathode-end side.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lowest potential node; completes shunt path during reverse avalanche. |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., 12 V supply); carries full transient current into anode during clamping. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood use including temperature cycling, humidity, and mechanical shock per JESD47. |
| Glass passivated junction | Ensures stable VBR over lifetime and immunity to moisture-induced parameter drift in harsh environments. |
| 600 W peak pulse power (10/1000 μs) | Meets ISO 7637-2 Pulse 5a requirements for alternator load dump suppression in 12 V systems. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ESD > 30 kV), improving protection margin. |
| MSL Level 1 rating | Enables standard SMT reflow without baking; compatible with high-volume automotive PCB assembly lines. |
Applications
| Automotive Power Rail Protection | Engine Control Unit (ECU) Input Protection |
|---|---|
|
Use Scenario: Suppressing load dump transients (up to 60 V, 400 ms) on 12 V battery-fed power inputs of infotainment head units. IC Role / Device Role / Timing Role: Uni-directional shunt TVS placed between VBAT and GND, clamping within nanoseconds to protect LDOs and microcontrollers. Use Value: Limits peak voltage to 24.4 V during 600 W surge, preventing latch-up or gate oxide damage in downstream PMICs. |
Use Scenario: Guarding MCU GPIOs and CAN transceiver power pins against coupled noise from fuel injector switching. IC Role / Device Role / Timing Role: Localized TVS on each protected signal/power net, positioned within 2 mm of IC pin per layout best practice. Use Value: Sub-100 ns response time and 1.0 μA leakage preserve signal integrity and battery life in always-on ECU sleep modes. |
| Body Control Module (BCM) Sensor Interface | ADAS Camera Power Line Protection |
|
Use Scenario: Protecting LIN bus transceivers and door lock actuator drivers from inductive kickback in 24 V commercial vehicle BCMs. IC Role / Device Role / Timing Role: Standoff-rated TVS (VWM = 15 V) placed upstream of regulator input to absorb 100 A IFSM-level surges. Use Value: 100 A surge rating handles worst-case solenoid turn-off energy without degradation, ensuring 15-year field reliability. |
Use Scenario: Securing 5 V bias rail of CMOS image sensors in forward-looking cameras exposed to ignition noise and ESD. IC Role / Device Role / Timing Role: Low-capacitance TVS (CJ < 100 pF at 0 V) integrated near connector to minimize stub length and signal distortion. Use Value: Clamps 8 kV contact ESD per IEC 61000-4-2 without affecting 30 MHz pixel clock integrity or introducing jitter. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15AHE3/52 | Same VWM (15 V), identical DO-214AA (SMB) package but larger footprint (2.92 mm vs. 2.10 mm width); RθJA = 85 °C/W. | Higher thermal mass allows marginally higher sustained surge duty; less space-efficient on dense automotive PCBs. | Prefer when board layout permits wider pad spacing and thermal performance outweighs size constraints. |
| 1.5SMC15AHE3/A | Same VWM and VBR, but DO-214AB (SMC) package (7.11 mm x 6.22 mm); PPPM = 1500 W; RθJA = 30 °C/W. | Supports higher energy surges (e.g., ISO 16750-2 long-duration pulses); requires significantly more board area. | Choose for heavy-duty industrial or commercial vehicle applications where 1500 W rating is mandatory. |
Compared with SMBG15HE3/52, SMBJ15AHE3/52 offers slightly better thermal dissipation in a marginally larger footprint, while 1.5SMC15AHE3/A provides triple the pulse power in a much larger package - making SMBG15HE3/52 the optimal balance of compactness, AEC-Q101 compliance, and 600 W protection for space-constrained automotive modules.
Availability
SMBG15HE3/52 is available at Aetrix Electronics and suitable for automotive electronics, engine control units, and body control modules requiring stable component supply with AEC-Q101 qualification and traceable sourcing.
Supply support for SMBG15HE3/52 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, MOSFETs, and protection devices with emphasis on automotive, industrial, and computing applications.
The SMBG series was engineered specifically for AEC-Q101-compliant transient suppression in compact automotive ECUs, balancing high surge capability, low leakage, and SMT manufacturability in the DO-215AA package.
FAQ
What is the clamping voltage of SMBG15HE3/52 at its rated peak pulse current?
The SMBG15HE3/52 has a maximum clamping voltage (VC) of 24.4 V at its peak pulse current (IPPM) of 24.6 A, measured under the standard 10/1000 μs waveform. This value defines the upper voltage limit imposed on protected circuitry during a 600 W transient event and is critical for verifying compatibility with downstream IC absolute maximum ratings. The SMBG15HE3/52 maintains this clamping performance across its qualified temperature range (−55 °C to +150 °C).
Is SMBG15HE3/52 suitable for bi-directional signal line protection?
No, SMBG15HE3/52 is a uni-directional TVS diode intended only for DC power rail or unidirectional signal protection. For bi-directional applications such as RS-485, CAN, or AC-coupled lines, Vishay specifies CA-suffix parts like SMBG15CA. Using SMBG15HE3/52 on bi-directional lines would result in forward conduction during negative half-cycles, causing malfunction or damage. Always match suffix (A vs. CA) to polarity requirement.
Does SMBG15HE3/52 meet automotive qualification standards?
Yes, SMBG15HE3/52 is explicitly AEC-Q101 qualified, as confirmed in the Vishay datasheet (Document Number: 88456, Revision: 12-Nov-12) and ordering code suffix "HE3". This qualification covers stress tests including temperature cycling, high-temperature operating life, and mechanical shock - validating its suitability for under-hood and chassis-mounted automotive modules. The "HE3" suffix denotes both RoHS compliance and AEC-Q101 qualification.
What is the thermal resistance of SMBG15HE3/52, and how does it affect layout?
SMBG15HE3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 5.0 mm × 5.0 mm copper pads per terminal, as specified in the Vishay datasheet. This value requires careful PCB layout: undersized pads or insufficient copper area will cause excessive junction temperature rise during repetitive surges, degrading clamping performance and reliability. Thermal derating must follow Figure 2 in the datasheet for ambient temperatures above 25 °C.
How does the leakage current of SMBG15HE3/52 impact low-power automotive systems?
SMBG15HE3/52 exhibits ≤1.0 μA maximum reverse leakage current (ID) at its 15 V stand-off voltage (VWM), measured at 25 °C. This ultra-low leakage ensures minimal parasitic drain on always-on vehicle subsystems - such as keyless entry receivers or telematics backup power rails - preserving battery life over extended parking periods. Leakage remains within specification up to +125 °C, supporting reliable operation in hot-cabin environments.
SMBG15HE3/52 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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 26.9V
- Current - Peak Pulse (10/1000µs):
- 22.3A
- 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)
SMBG15HE3/52 FAQ
1.How can I place an order for SMBG15HE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG15HE3/52 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 SMBG15HE3/52 reliable?
The price and inventory of SMBG15HE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG15HE3/52 is usually 5 days.
3.What payment methods are accepted for SMBG15HE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG15HE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG15HE3/52?
SMBG15HE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG15HE3/52 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 SMBG15HE3/52?
For technical support, including SMBG15HE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG15HE3/52 requirements.
6.How does Aetrix verify that SMBG15HE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG15HE3/52 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 SMBG15HE3/52 meets industry standards.
7.What is the process for return or replacement of SMBG15HE3/52?
All SMBG15HE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG15HE3/52, 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 SMBG15HE3/52 part is unused and in its original packaging.
Return procedure for SMBG15HE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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