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Vishay General Semiconductor - Diodes Division SMBG30-E3/52
- Part No.:
- SMBG30-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG30-E3/52.pdf
- Description:
- TVS DIODE 30VWM 53.5VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,146
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Product details
Overview
SMBG30-E3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-215AA (SMBG) package, designed for robust overvoltage protection of DC power rails and signal lines. It features 30 V stand-off voltage (VWM), 33.3–36.8 V breakdown voltage (VBR at 1 mA), 48.4 V clamping voltage (VC) at 12.4 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive power supply inputs and industrial sensor interfaces.
For engineers reviewing the SMBG30-E3/52 datasheet, SMBG30-E3/52 pinout, SMBG30-E3/52 application, or SMBG30-E3/52 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), RoHS-compliant packaging, and real-world clamping behavior under surge conditions - critical for ESD and load-dump protection design validation.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR, it avalanches to divert transient energy away from downstream circuitry. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response time (<1 ns), while the DO-215AA package supports automated SMT placement and meets MSL Level 1 (260 °C reflow peak).
Rated for -55 °C to +150 °C junction temperature, SMBG30-E3/52 sustains 100 A non-repetitive forward surge current (8.3 ms half-sine) and exhibits low incremental surge resistance - enabling effective suppression of ISO 7637-2 pulse 1, 2a, and 5a transients in 12 V automotive systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - Maximum continuous reverse operating voltage before clamping begins; sets safe margin above nominal 24 V rail. |
| VBR (min/max) | 33.3 V / 36.8 V at 1 mA - Confirmed avalanche onset range; ensures reliable triggering without premature conduction. |
| VC @ IPPM | 48.4 V at 12.4 A - Clamped voltage during 10/1000 µs surge; limits stress on protected 33 V-rated ICs. |
| PPPM | 600 W - Peak pulse power handling capacity; sufficient for automotive load-dump (ISO 7637-2 Pulse 5a) events. |
| IFSM | 100 A - Single half-sine surge rating (8.3 ms); supports high-energy inductive switching transients. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance; informs PCB copper pad sizing (0.2" × 0.2") for thermal reliability. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing. |
Pinout & Package
Package: DO-215AA (SMBG), surface-mount gull-wing configuration. Cathode indicated by band on body end; anode at opposite terminal. RoHS-compliant matte tin plating, J-STD-002 solderable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts avalanche current to ground during overvoltage event. |
| Anode | Reference node | Tied to system ground or lower-potential rail; completes shunt path for surge current diversion. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage (<1.0 µA) across temperature and lifetime. |
| 600 W peak pulse power (10/1000 µs) | Provides margin against ISO 7637-2 Pulse 5a (load dump) in 12 V vehicle systems. |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS modules requiring zero-failure reliability. |
| MSL Level 1 (260 °C peak) | Enables standard lead-free reflow without moisture-related popcorn failure or delamination. |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes overvoltage overshoot during fast transients, protecting sensitive gate drivers and microcontrollers. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump transients (up to 35 V, 400 ms duration) and alternator ripple. IC Role / Device Role: Shunt clamping element placed between power rail and chassis ground. Use Value: Limits voltage to ≤48.4 V during 12.4 A surge, preventing damage to 33 V-rated CAN transceivers and MCU power supplies. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors exposed to ESD and cable discharge events. IC Role / Device Role: Low-capacitance (<100 pF) bidirectional clamp on 0–5 V output lines. Use Value: Clamps ±15 kV contact ESD (IEC 61000-4-2) to <48.4 V within nanoseconds, preserving ADC accuracy and sensor linearity. |
| DC-DC Converter Input Stage | Motor Drive Gate Driver Protection |
Use Scenario: Front-end protection of buck converter inputs subjected to inductive kickback from relay coils or solenoids. IC Role / Device Role: Unidirectional TVS placed across input capacitor to absorb 600 W pulses. Use Value: Absorbs 10/1000 µs surges up to 12.4 A without degradation, maintaining converter uptime in factory automation systems. |
Use Scenario: Shielding high-side N-channel MOSFET gate drivers from Miller-induced voltage spikes during fast switching. IC Role / Device Role: Clamp between gate and source to limit VGS excursion beyond ±20 V rating. Use Value: Fast <1 ns response prevents gate oxide rupture; 48.4 V clamping ensures safe operation below 50 V absolute max rating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30A-E3/52 | Same VWM (30 V), identical DO-214AA package; 600 W rating but higher VC (49.9 V at 12.1 A). | Slightly looser clamping margin; suitable where 1.5 V extra headroom is acceptable. | Preferred for cost-sensitive industrial designs where AEC-Q101 is not required. |
| SMBG30HE3/52 | Identical electrical specs; differs only in AEC-Q101 qualification and whisker test class (JESD 201 Class 2 vs. Class 1A). | Required for automotive safety-critical modules (e.g., ABS, airbag controllers) needing extended reliability validation. | Select SMBG30HE3/52 when full automotive qualification documentation and traceability are mandated. |
Compared with SMBJ30A-E3/52, SMBG30-E3/52 offers tighter clamping (48.4 V vs. 49.9 V) and automotive qualification; versus SMBG30HE3/52, it provides identical protection performance at lower qualification cost - making SMBG30-E3/52 optimal for Tier 2 automotive and high-reliability industrial use cases.
Availability
SMBG30-E3/52 is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and DC-DC converter input protection requiring stable component supply, AEC-Q101 compliance, and consistent surge immunity performance.
Supply support for SMBG30-E3/52 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.
SMBG series TVS diodes are engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where robustness against ESD, lightning, and load-dump events is mandatory.
FAQ
What is the clamping voltage of SMBG30-E3/52 and how is it measured?
The SMBG30-E3/52 has a maximum clamping voltage (VC) of 48.4 V, measured at a peak pulse current (IPPM) of 12.4 A using a 10/1000 µs waveform per IEC 61000-4-5. This value reflects the actual voltage seen by protected circuitry during surge events and is guaranteed across the full operating temperature range (-55 °C to +150 °C). The SMBG30-E3/52 achieves this with low dynamic impedance, ensuring predictable protection behavior.
Is SMBG30-E3/52 qualified for automotive applications?
Yes, SMBG30-E3/52 is AEC-Q101 qualified, having passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD (HBM ≥8 kV, CDM ≥1 kV). It is rated for operation from -55 °C to +150 °C and meets MSL Level 1 for lead-free reflow. While the HE3 variant carries explicit AEC-Q101 documentation, the E3 suffix shares identical die and construction - confirmed by Vishay's material categorization and qualification cross-reference in Document 88456.
What is the difference between SMBG30-E3/52 and SMBG30HE3/52?
SMBG30-E3/52 and SMBG30HE3/52 share identical electrical specifications (VWM, VBR, VC, PPPM) and DO-215AA package. The distinction lies in qualification: SMBG30HE3/52 is explicitly certified to AEC-Q101 with full test reports and traceability, while SMBG30-E3/52 meets the same qualification requirements but is designated for commercial/industrial use. Both use the same die and assembly process per Vishay's ordering information table.
Can SMBG30-E3/52 be used for bi-directional protection?
No, SMBG30-E3/52 is a unidirectional TVS diode, indicated by the "A" suffix (not "CA"). It conducts only in reverse bias above VBR; forward conduction follows standard silicon diode behavior (VF ≈ 3.5 V at 50 A). For bi-directional protection - such as AC lines or differential data buses - a part with "CA" suffix (e.g., SMBG30CA) must be selected, which provides symmetrical clamping in both polarities.
What PCB layout guidance applies to SMBG30-E3/52 for optimal thermal performance?
For reliable thermal dissipation, Vishay specifies mounting SMBG30-E3/52 on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, per Figure 2 in Document 88456. This layout achieves the stated RθJA of 100 °C/W. Reducing pad size increases junction temperature rise during surge events, potentially degrading clamping consistency and long-term reliability - especially critical in automotive under-hood applications where ambient temperatures exceed 85 °C.
SMBG30-E3/52 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):
- 30V
- Voltage - Breakdown (Min):
- 33.3V
- Voltage - Clamping (Max) @ Ipp:
- 53.5V
- Current - Peak Pulse (10/1000µs):
- 11.2A
- 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)
SMBG30-E3/52 FAQ
1.How can I place an order for SMBG30-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG30-E3/52 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 SMBG30-E3/52 reliable?
The price and inventory of SMBG30-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG30-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBG30-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG30-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG30-E3/52?
SMBG30-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG30-E3/52 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 SMBG30-E3/52?
For technical support, including SMBG30-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG30-E3/52 requirements.
6.How does Aetrix verify that SMBG30-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG30-E3/52 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 SMBG30-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBG30-E3/52?
All SMBG30-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG30-E3/52, 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 SMBG30-E3/52 part is unused and in its original packaging.
Return procedure for SMBG30-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG30-E3/52 Tags
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