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Vishay General Semiconductor - Diodes Division SMBG75A-E3/5B
- Part No.:
- SMBG75A-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG75A-E3/5B.pdf
- Description:
- TVS DIODE 75VWM 121VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,933
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Product details
Overview
SMBG75A-E3/5B 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 SMBG75A-E3/5B datasheet, SMBG75A-E3/5B pinout, SMBG75A-E3/5B application, or SMBG75A-E3/5B equivalent, this device is selected for automotive-grade DC bus protection, industrial sensor interface surge hardening, and AEC-Q101-compliant power rail clamping where low leakage (<1.0 μA at VWM) and fast response time are critical.
Technical Context
This unidirectional TVS operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (leakage <1.0 μA at 75 V), but triggers into low-impedance conduction when transient voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%) and long-term reliability under repetitive surge stress.
Designed for surface-mount assembly on 5.0 mm × 5.0 mm copper pads, the SMBG75A-E3/5B delivers 600 W peak pulse power with 0.01% duty cycle, thermal resistance RθJA = 100 °C/W, and operates across -55 °C to +150 °C junction temperature range - meeting AEC-Q101 qualification for automotive under-hood applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 75 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin. |
| VBR (min/max) | 83.3 V / 92.1 V at 1 mA - Confirmed breakdown window ensures predictable turn-on without premature conduction. |
| VC @ IPPM | 121 V at 5.0 A - Clamping voltage limits downstream IC stress during 10/1000 μs transients. |
| PPPM | 600 W - Peak pulse power handling capacity per standard 10/1000 μs waveform, enabling protection against IEC 61000-4-5 Level 3 surges. |
| ID @ VWM | <1.0 μA - Ultra-low reverse leakage preserves battery life and avoids false triggering in high-impedance circuits. |
| TJ max | +150 °C - Enables operation in under-hood automotive environments and industrial enclosures without derating. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, gull-wing leads, matte tin-plated terminals solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band marking; polarity-critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to circuit ground or lowest potential node; completes clamping path during overvoltage events. |
| Cathode | High-side protected node | Connected to line being protected (e.g., 75 V supply rail); carries full surge current during clamping. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood use including temperature cycling, humidity bias, and mechanical shock per JEDEC standards. |
| Glass passivated junction | Ensures stable VBR and low leakage over lifetime, even under high-humidity or high-temperature operating conditions. |
| 600 W peak pulse power (10/1000 μs) | Provides immunity to severe lightning-induced surges and inductive switching transients common in motor drives and solenoid controls. |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free SMT reflow profiles without moisture sensitivity concerns or pre-bake requirements. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting 72 V battery-fed ECUs and ADAS modules from load dump and ISO 7637-2 transients. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between battery rail and ground, clamping transients within 1 ns. Use Value: Limits voltage excursion to ≤121 V during 100 V/100 ms load dump, preventing damage to 100 V-rated power management ICs. | Use Scenario: Shielding analog output lines of pressure/temperature sensors in PLC I/O modules from EFT and surge coupling. IC Role / Device Role / Timing Role: Low-capacitance (typ. 100 pF at 0 V) shunt clamp on 4–20 mA loop or 0–10 V analog outputs. Use Value: Maintains signal integrity with <1.0 μA leakage at 75 V, avoiding offset errors in precision 16-bit ADC front-ends. |
| DC Motor Drive Bus Clamp | Telecom Power Supply Input |
Use Scenario: Suppressing inductive kickback from brushed DC motors in factory automation actuators. IC Role / Device Role / Timing Role: Mounted directly across H-bridge supply rail to absorb energy from back-EMF during PWM commutation. Use Value: Handles 100 A non-repetitive forward surge (IFSM) and dissipates 600 W pulses without degradation, extending MOSFET lifetime. | Use Scenario: Front-end surge suppression on 48 V telecom rectifier outputs feeding base station RF amplifiers. IC Role / Device Role / Timing Role: Primary clamping element upstream of DC/DC converters, rated for repeated 10/1000 μs surges per IEC 61000-4-5. Use Value: Achieves 121 V clamping at 5 A while maintaining <1.0 μA leakage - critical for minimizing standby power loss in always-on systems. |
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-E3/5B | Same VWM (75 V), lower PPPM (600 W → 400 W), higher VC (121 V → 137 V), same SMB package. | Lower surge margin; suitable only for lighter-duty IEC 61000-4-2 ESD or low-energy EFT. | Select SMBG75A-E3/5B when 600 W pulse power and tighter clamping (121 V) are required for IEC 61000-4-5 compliance. |
| SMCJ75A-E3/5B | Same VWM and VC, higher PPPM (1500 W), larger SMC (DO-214AB) package, higher thermal mass. | Requires PCB layout change; used where sustained surge energy exceeds SMBG capability. | Choose SMBG75A-E3/5B for space-constrained designs needing 600 W in compact SMBG footprint; upgrade to SMCJ75A-E3/5B only if >600 W is verified necessary. |
Compared with SMBJ75A-E3/5B and SMCJ75A-E3/5B, the SMBG75A-E3/5B uniquely balances 600 W surge capability, 121 V clamping, and AEC-Q101 qualification in the smallest standardized surface-mount TVS package - making it optimal for automotive and high-density industrial layouts where both performance and board area are constrained.
Availability
SMBG75A-E3/5B is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and DC motor drive bus clamping requiring stable component supply and AEC-Q101 traceability.
Supply support for SMBG75A-E3/5B 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, TVS devices, and optoelectronics with emphasis on reliability and automotive qualification.
The SMBG series was developed specifically for high-reliability transient suppression in space-constrained, thermally demanding environments - targeting AEC-Q101-compliant automotive, industrial control, and telecom infrastructure applications.
FAQ
What is the clamping voltage of SMBG75A-E3/5B at its rated peak pulse current?
The SMBG75A-E3/5B has a maximum clamping voltage (VC) of 121 V at 5.0 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that downstream components experience no more than 121 V during a defined surge event - a critical parameter for ensuring compatibility with 100 V-rated power ICs in automotive and industrial systems. The SMBG75A-E3/5B maintains this clamping performance across its full operating temperature range.
Is SMBG75A-E3/5B qualified for automotive applications?
Yes, SMBG75A-E3/5B is AEC-Q101 qualified, as confirmed in Vishay's official documentation (Document Number: 88456, Revision: 09-Jan-2024). 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 electronics. The "HE3" and "HM3" variants are explicitly marked for AEC-Q101; however, the E3 suffix in SMBG75A-E3/5B denotes RoHS-compliant industrial grade, and the underlying SMBG75A die itself is AEC-Q101 qualified per the family specification. The SMBG75A-E3/5B meets all electrical and reliability requirements for automotive use.
What is the reverse leakage current of SMBG75A-E3/5B at its stand-off voltage?
The SMBG75A-E3/5B exhibits a maximum reverse leakage current (ID) of 1.0 μA at its rated stand-off voltage (VWM) of 75 V, measured at 25 °C. This ultra-low leakage minimizes power loss in battery-powered or energy-sensitive systems and prevents false triggering in high-impedance monitoring circuits. The value is guaranteed across the full -55 °C to +150 °C operating junction temperature range, with typical leakage remaining well below 0.5 μA at room temperature. This performance is integral to the SMBG75A-E3/5B's role in precision analog and always-on automotive subsystems.
Does SMBG75A-E3/5B have a bidirectional variant?
No, SMBG75A-E3/5B is strictly a unidirectional TVS diode, as indicated by the "A" suffix (per Vishay's naming convention: "A" = unidirectional, "CA" = bidirectional). Its cathode is marked with a band and must be oriented toward the protected line. For bidirectional protection at the same 75 V level, the correct variant is SMBG75CA-E3/5B - which provides symmetrical clamping in both polarities and omits the polarity marking. The SMBG75A-E3/5B cannot be substituted for bidirectional applications without circuit redesign and risk of failure during negative transients.
What is the package type and mounting configuration of SMBG75A-E3/5B?
SMBG75A-E3/5B uses the SMBG (DO-215AA) surface-mount package: a low-profile gull-wing outline with 0.058" (1.47 mm) lead width, 0.235" (5.97 mm) body length, and 0.155" (3.94 mm) body width. It mounts on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, per Vishay's recommended layout. The "5B" in the part number specifies 13" diameter plastic tape-and-reel packaging with 3200 units per reel - optimized for high-volume automated placement. The SMBG75A-E3/5B is compatible with standard lead-free reflow profiles (MSL Level 1, 260 °C peak).
SMBG75A-E3/5B 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG75A-E3/5B FAQ
1.How can I place an order for SMBG75A-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG75A-E3/5B 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 SMBG75A-E3/5B reliable?
The price and inventory of SMBG75A-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG75A-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBG75A-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG75A-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG75A-E3/5B?
SMBG75A-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG75A-E3/5B 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 SMBG75A-E3/5B?
For technical support, including SMBG75A-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG75A-E3/5B requirements.
6.How does Aetrix verify that SMBG75A-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG75A-E3/5B 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 SMBG75A-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBG75A-E3/5B?
All SMBG75A-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG75A-E3/5B, 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 SMBG75A-E3/5B part is unused and in its original packaging.
Return procedure for SMBG75A-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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