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Vishay General Semiconductor - Diodes Division SMBG43AHE3/52
- Part No.:
- SMBG43AHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG43AHE3/52.pdf
- Description:
- TVS DIODE 43VWM 69.4VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,989
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Product details
Overview
SMBG43AHE3/52 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 43 V stand-off voltage (VWM), 47.8–52.8 V breakdown voltage (VBR) at 1 mA, 69.4 V maximum clamping voltage (VC) at 8.6 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive powertrain control units, industrial motor drives, and telecom interface circuits.
For engineers reviewing the SMBG43AHE3/52 datasheet, SMBG43AHE3/52 pinout, SMBG43AHE3/52 application, or SMBG43AHE3/52 equivalent, key selection criteria include clamping performance under 8.6 A surge, AEC-Q101 qualification for automotive use, RoHS-compliant HE3 suffix, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a unidirectional shunt protector, leveraging a glass-passivated silicon junction to clamp transient overvoltages before they damage downstream ICs or MOSFETs. Its low incremental surge resistance and fast response time ensure effective suppression of ESD, load dump, and inductive switching spikes.
The device is rated for -55 °C to +150 °C operating junction temperature, with thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), enabling reliable operation in high-temperature automotive engine compartments and industrial enclosures without derating below 25 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 43 V - Maximum continuous reverse working voltage before clamping initiates; defines safe operating margin for 36 V nominal automotive systems. |
| VBR (min/max) | 47.8 V / 52.8 V at 1 mA - Confirmed breakdown range ensures predictable turn-on during transients without premature conduction. |
| VC @ IPPM | 69.4 V at 8.6 A - Clamping voltage limits stress on protected circuitry during 10/1000 µs surge events. |
| PPPM | 600 W - Peak pulse power handling capability per standard 10/1000 µs waveform at 0.01% duty cycle. |
| ID @ VWM | 1.0 µA - Ultra-low reverse leakage preserves signal integrity and minimizes standby power loss. |
| TJ max. | +150 °C - Enables deployment in under-hood automotive environments and high-power industrial controls. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22-A114. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to system ground or lower-potential rail; enables clamping when cathode-side voltage exceeds VBR. |
| Cathode | Current exit terminal during clamping | Connected to protected line (e.g., CAN_H, 12 V supply); carries full surge current to ground during transient events. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR over lifetime and immunity to moisture-induced parameter drift in harsh environments. |
| MSL Level 1 (260 °C peak) | Supports lead-free reflow without popcorn effect or delamination, compatible with standard PCB assembly processes. |
| 600 W peak pulse power | Handles automotive load-dump surges (ISO 7637-2 Pulse 5a) and industrial inductive kickback without failure. |
| AEC-Q101 qualification | Validates suitability for safety-critical automotive subsystems including body control modules and ADAS sensor interfaces. |
| Low profile SMBG package | Reduces board space vs. SMA/SMB alternatives while maintaining thermal performance via optimized pad layout (5.0 mm × 5.0 mm). |
Applications
| Automotive Power Distribution | Industrial Motor Drive I/O Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V power rails in engine control units against ISO 7637-2 load dump transients up to 120 V. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between battery feed and DC-DC converter input. Use Value: Limits clamped voltage to ≤69.4 V, preventing overvoltage damage to downstream regulators and microcontrollers. | Use Scenario: Safeguarding digital I/O lines of PLC output modules exposed to relay coil flyback and contact arcing. IC Role / Device Role / Timing Role: Point-of-use TVS on isolated 24 V digital outputs driving solenoids and valves. Use Value: Responds in <1 ns to suppress 600 W surges, preserving logic-level integrity and reducing false triggering. |
| Telecom Interface Protection | Automotive Sensor Signal Lines |
Use Scenario: Shielding RS-485 transceiver pins in base station backhaul equipment from lightning-induced surges. IC Role / Device Role / Timing Role: Bidirectional-capable variant not applicable; this unidirectional part used on VCC-supply side of isolated data lines. Use Value: Low 1.0 µA leakage avoids loading high-impedance bias networks while delivering 69.4 V clamping at 8.6 A. | Use Scenario: Protecting analog outputs of pressure/temperature sensors in exhaust gas recirculation (EGR) systems. IC Role / Device Role / Timing Role: TVS mounted directly at sensor connector to minimize inductance in surge path. Use Value: AEC-Q101 qualification ensures long-term stability across -40 °C to +150 °C junction temperature swings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBG43AE3/52 | Same electrical specs but lacks AEC-Q101 qualification; RoHS-compliant E3 suffix only. | Approved for industrial/commercial use only; not validated for automotive temperature cycling or HTRB stress. | Select SMBG43AE3/52 only for non-automotive designs where cost optimization outweighs qualification requirements. |
| SMBJ43AHE3/52 | Higher 600 W PPPM rating retained, but SMBJ package has larger footprint (DO-214AB) and higher RθJA (110 °C/W). | Less suitable for space-constrained automotive modules; requires larger copper pads for equivalent thermal performance. | Choose SMBJ43AHE3/52 only if legacy PCB layout mandates DO-214AB footprint or higher surge margin beyond SMBG's 8.6 A IPPM. |
Compared with SMBG43AE3/52 and SMBJ43AHE3/52, the SMBG43AHE3/52 uniquely combines AEC-Q101 qualification, SMBG's compact DO-215AA footprint, and verified 69.4 V clamping at 8.6 A - making it optimal for new automotive and high-reliability industrial designs requiring both space efficiency and qualification compliance.
Availability
SMBG43AHE3/52 is available at Aetrix Electronics and suitable for automotive power distribution, industrial motor drive I/O protection, and telecom interface protection requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SMBG43AHE3/52 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 reliability, power efficiency, and automotive-grade validation.
The SMBG series was engineered specifically for surface-mount transient suppression in space-constrained, high-temperature environments - targeting automotive, industrial, and telecom applications demanding AEC-Q101 compliance and robust 600 W surge handling.
FAQ
What is the clamping voltage of SMBG43AHE3/52 at its rated peak pulse current?
The SMBG43AHE3/52 has a maximum clamping voltage (VC) of 69.4 V at 8.6 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures protected circuits remain within safe voltage margins during surge events. The SMBG43AHE3/52 maintains this clamping performance across its qualified operating temperature range.
Is SMBG43AHE3/52 suitable for automotive applications?
Yes, SMBG43AHE3/52 is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. Its -55 °C to +150 °C operating junction temperature range, MSL Level 1 reflow compatibility, and validation against temperature cycling, HTRB, and ESD tests confirm suitability for engine control units, body electronics, and ADAS sensor interfaces. The HE3 suffix denotes AEC-Q101 qualification and RoHS compliance.
What does the 'HE3' suffix mean in SMBG43AHE3/52?
The 'HE3' suffix in SMBG43AHE3/52 indicates RoHS-compliant construction with AEC-Q101 qualification (H = AEC-Q101, E3 = RoHS-compliant industrial grade). This distinguishes it from E3-only variants (no AEC-Q101) and HM3 variants (halogen-free + AEC-Q101). The SMBG43AHE3/52 meets JESD201 Class 2 whisker resistance and UL 94 V-0 flammability standards per its SMBG package specification.
How does SMBG43AHE3/52 compare to SMBJ43AHE3/52 in terms of thermal performance?
SMBG43AHE3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W, versus 110 °C/W for SMBJ43AHE3/52, due to the smaller SMBG (DO-215AA) package's optimized thermal pad layout. Both share identical 600 W PPPM rating, but SMBG43AHE3/52 achieves equivalent thermal dissipation in less board area - critical for dense automotive ECUs where footprint and thermal management are co-constrained.
What is the reverse leakage current of SMBG43AHE3/52 at its stand-off voltage?
The SMBG43AHE3/52 exhibits a maximum reverse leakage current (ID) of 1.0 µA at its 43 V stand-off voltage (VWM), measured at 25 °C. This ultra-low leakage preserves signal integrity on high-impedance lines and minimizes standby power loss in battery-powered systems. Leakage remains within specification across the full -55 °C to +150 °C operating range, as confirmed in Vishay's thermal derating curves.
SMBG43AHE3/52 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):
- 43V
- Voltage - Breakdown (Min):
- 47.8V
- Voltage - Clamping (Max) @ Ipp:
- 69.4V
- Current - Peak Pulse (10/1000µs):
- 8.6A
- 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)
SMBG43AHE3/52 FAQ
1.How can I place an order for SMBG43AHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG43AHE3/52 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 SMBG43AHE3/52 reliable?
The price and inventory of SMBG43AHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG43AHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBG43AHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG43AHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG43AHE3/52?
SMBG43AHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG43AHE3/52 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 SMBG43AHE3/52?
For technical support, including SMBG43AHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG43AHE3/52 requirements.
6.How does Aetrix verify that SMBG43AHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG43AHE3/52 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 SMBG43AHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBG43AHE3/52?
All SMBG43AHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG43AHE3/52, 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 SMBG43AHE3/52 part is unused and in its original packaging.
Return procedure for SMBG43AHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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