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Vishay General Semiconductor - Diodes Division SMBG75AHE3/52
- Part No.:
- SMBG75AHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG75AHE3/52.pdf
- Description:
- TVS DIODE 75VWM 121VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,958
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Product details
Overview
SMBG75AHE3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 75 V stand-off voltage (VWM), 83.3–92.1 V breakdown voltage (VBR) at 1 mA, 121 V maximum clamping voltage (VC) at 5.0 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform.
For engineers reviewing the SMBG75AHE3/52 datasheet, SMBG75AHE3/52 pinout, SMBG75AHE3/52 application, or SMBG75AHE3/52 equivalent, this AEC-Q101 qualified device supports automotive-grade surge immunity, offers low incremental surge resistance, fast response time, and meets UL 497B recognition - critical for protecting MOSFETs, microcontrollers, and sensor interfaces against inductive switching transients and ESD events.
Technical Context
This TVS diode operates as a unidirectional clamping device, with cathode-band polarity marking and glass-passivated junction for stable avalanche performance. Its thermal resistance (RθJA) is 100 °C/W on standard 0.2" × 0.2" copper pads, enabling reliable operation up to 150 °C junction temperature under repetitive surge conditions.
The SMBG75AHE3/52 delivers 5.0 A peak pulse current (IPPM) at 121 V clamping, with 1.0 µA max reverse leakage at 75 V and 100 A non-repetitive forward surge capability (IFSM) - confirming suitability for high-energy transient suppression in automotive power distribution and industrial control inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 75 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 12 V/24 V/48 V systems. |
| VBR (min/max) | 83.3 V / 92.1 V at 1 mA - Confirmed avalanche onset range ensures predictable turn-on during transients without premature conduction. |
| VC @ IPPM | 121 V at 5.0 A - Clamping voltage limits downstream IC stress during 600 W surges; enables design margin for 100 V-rated components. |
| PPPM | 600 W - Peak pulse power handling with 10/1000 µs waveform supports IEC 61000-4-5 Level 4 compliance when properly mounted. |
| IFSM | 100 A - Single half-sine surge rating (8.3 ms) allows survival of high-current inductive kickback in relay/motor drive circuits. |
| TJ max | +150 °C - Junction temperature limit supports under-hood automotive placement and industrial environments with elevated ambient heat. |
| MSL Level | Level 1 (J-STD-020) - No floor life limitation; compatible with standard SMT reflow profiles up to 260 °C peak. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, low-profile gull-wing lead frame with matte tin-plated terminals solderable per J-STD-002. Cathode marked by band on body; anode and cathode terminals are symmetrical across centerline.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to protected circuit ground or low-side return path | Enables unidirectional clamping from line-to-ground; must be tied to lowest potential node in protected path. |
| Cathode | Current exit point in forward bias; connected to protected line (e.g., 24 V rail or CAN_H) | Band-marked terminal; reverse-biased during normal operation; conducts only during overvoltage events to shunt energy to ground. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units, body electronics, and ADAS sensors requiring zero-failure reliability under thermal cycling and vibration. |
| Glass-passivated junction | Ensures stable VBR tolerance and long-term leakage stability across temperature and lifetime, critical for safety-critical protection circuits. |
| 600 W peak pulse power | Supports IEC 61000-4-5 Combination Wave (1.2/50 µs voltage + 8/20 µs current) testing up to Level 4 (4 kV/2 kA) with appropriate PCB layout. |
| Low clamping ratio (VC/VBR ≈ 1.31) | Minimizes let-through voltage during surge events, reducing stress on downstream MOSFETs, gate drivers, and MCU I/O pins. |
| UL 497B recognition (QVGQ2) | Confirms compliance for telecom and industrial signal line protection where regulatory agency listing is mandatory for end-equipment certification. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppressing load-dump transients (up to 120 V, 400 ms) on 12 V battery-fed ECUs in passenger vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input filter capacitor to clamp overvoltage before it reaches LDOs and microcontrollers. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic supplies by limiting peak voltage to ≤121 V during ISO 16750-2 pulse 5a events. | Use Scenario: Protecting analog outputs (4–20 mA loop drivers) and digital I/O (RS-485, CAN) in factory automation PLC modules. IC Role / Device Role / Timing Role: Line-to-ground TVS on each signal pair to absorb EFT bursts (IEC 61000-4-4) and lightning-induced surges (IEC 61000-4-5). Use Value: Maintains signal integrity and prevents false triggering or reset events by clamping transients within 1 ns while adding <1 pF junction capacitance. |
| DC Motor Drive Gate Protection | Telecom Power Supply Input Protection |
Use Scenario: Safeguarding high-side N-channel MOSFET gate drivers in brushed DC motor controllers subjected to back-EMF spikes. IC Role / Device Role / Timing Role: TVS placed between gate driver output and MOSFET gate to clamp negative-going spikes induced by inductive flyback. Use Value: Limits gate-source voltage to safe levels (<±20 V), preventing oxide breakdown and ensuring >100,000-cycle reliability in 24 V actuator systems. | Use Scenario: Front-end protection of AC/DC and DC/DC converters in VoIP phones and base station power modules exposed to AC mains surges. IC Role / Device Role / Timing Role: Primary-level TVS on DC input bus to absorb differential-mode surges before they reach primary-side controller ICs and transformers. Use Value: Enables UL 60950-1 and EN 62368-1 compliance by limiting let-through energy to <10 mJ during 6 kV ring-wave tests. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75A-E3/52 | Same VWM (75 V), but lower PPPM = 600 W (same), higher VC = 126 V at 4.8 A; SMBJ package (DO-214AB) has larger footprint and higher RθJA (110 °C/W). | Less suitable for space-constrained automotive modules; requires larger pad layout and exhibits higher thermal rise under repeated surges. | Select SMBG75AHE3/52 when board area is limited and AEC-Q101 qualification is mandatory; choose SMBJ75A-E3/52 only if legacy layout reuse is required. |
| SMCJ75AHE3/52 | Same VWM and VBR, but PPPM = 1500 W, VC = 121 V at 12.3 A; SMC package (DO-214AB) offers higher surge capacity but larger size and no AEC-Q101 qualification. | Better for high-energy industrial surges (e.g., motor drives), but lacks automotive qualification and increases PCB real estate by ~2.5×. | Choose SMBG75AHE3/52 for AEC-Q101-compliant compact designs; use SMCJ75AHE3/52 only when 1500 W rating is essential and qualification is secondary. |
Compared with SMBJ75A-E3/52 and SMCJ75AHE3/52, the SMBG75AHE3/52 uniquely balances AEC-Q101 qualification, 600 W surge capability, and SMBG's compact footprint - making it optimal for next-generation automotive ECUs and space-sensitive industrial controllers where reliability and density are co-prioritized.
Availability
SMBG75AHE3/52 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom power supply inputs requiring stable component supply, full traceability, and lifecycle continuity.
Supply support for SMBG75AHE3/52 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, efficiency, and application-specific optimization.
The SMBG series was engineered for high-density, high-reliability transient suppression in automotive and industrial environments - delivering AEC-Q101 qualification, low-profile packaging, and consistent clamping performance across temperature and lifetime.
FAQ
What is the clamping voltage of SMBG75AHE3/52 at its rated peak pulse current?
The SMBG75AHE3/52 has a maximum clamping voltage (VC) of 121 V at 5.0 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBG75AHE3/52 maintains this clamping performance across its specified operating temperature range and is validated per AEC-Q101 stress requirements.
Is SMBG75AHE3/52 qualified for automotive applications?
Yes, SMBG75AHE3/52 is AEC-Q101 qualified, as confirmed by Vishay's official documentation and ordering code suffix "HE3". This qualification covers stress tests including temperature cycling, humidity bias, mechanical shock, and accelerated life testing - ensuring reliability in under-hood and chassis-mounted automotive electronics. The SMBG75AHE3/52 is explicitly listed in Vishay's AEC-Q101 qualified products table.
What does the "HE3" suffix indicate in SMBG75AHE3/52?
The "HE3" suffix in SMBG75AHE3/52 denotes RoHS-compliant construction with AEC-Q101 qualification and matte tin-plated leads meeting J-STD-002 solderability standards. It distinguishes this variant from industrial-grade "E3" parts and halogen-free "HM3" versions. The HE3 marking confirms compliance with automotive reliability requirements and UL 497B recognition for surge protection applications.
Can SMBG75AHE3/52 be used for bidirectional transient suppression?
No, SMBG75AHE3/52 is a unidirectional TVS diode, indicated by the "A" (not "CA") suffix and cathode band marking. For bidirectional operation, Vishay specifies part numbers ending in "CA", such as SMBG75CAHE3/52. Using SMBG75AHE3/52 in bidirectional configurations would result in forward conduction during negative transients, potentially damaging the device or failing to protect the circuit.
What is the maximum reverse leakage current of SMBG75AHE3/52 at its stand-off voltage?
The SMBG75AHE3/52 exhibits a maximum reverse leakage current (ID) of 1.0 µA at its 75 V stand-off voltage (VWM) and 25 °C ambient temperature. This low leakage ensures minimal power loss in always-on systems and avoids false triggering of downstream monitoring circuits. Leakage remains below 10 µA up to 125 °C, supporting stable operation in high-temperature automotive and industrial deployments.
SMBG75AHE3/52 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):
- 75V
- Voltage - Breakdown (Min):
- 83.3V
- Voltage - Clamping (Max) @ Ipp:
- 121V
- Current - Peak Pulse (10/1000µs):
- 5A
- 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)
SMBG75AHE3/52 FAQ
1.How can I place an order for SMBG75AHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG75AHE3/52 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 SMBG75AHE3/52 reliable?
The price and inventory of SMBG75AHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG75AHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBG75AHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG75AHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG75AHE3/52?
SMBG75AHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG75AHE3/52 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 SMBG75AHE3/52?
For technical support, including SMBG75AHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG75AHE3/52 requirements.
6.How does Aetrix verify that SMBG75AHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG75AHE3/52 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 SMBG75AHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBG75AHE3/52?
All SMBG75AHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG75AHE3/52, 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 SMBG75AHE3/52 part is unused and in its original packaging.
Return procedure for SMBG75AHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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