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Vishay General Semiconductor - Diodes Division SMBG30AHE3/5B
- Part No.:
- SMBG30AHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG30AHE3/5B.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO215AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMBG30AHE3/5B from Vishay General Semiconductor is a unidirectional surface-mount TransZORB® transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, rated for 30 V stand-off voltage, 48.4 V clamping voltage at 12.4 A peak pulse current, and 600 W peak pulse power with 10/1000 μs waveform. It provides robust ESD and surge protection for automotive-grade power rails and signal lines in engine control units and ADAS sensor interfaces.
For engineers reviewing the SMBG30AHE3/5B datasheet, SMBG30AHE3/5B pinout, SMBG30AHE3/5B application, or SMBG30AHE3/5B equivalent, this device is selected for AEC-Q101-qualified 12 V automotive systems requiring low-leakage (<1.0 μA), fast response (<1 ns), and stable clamping under repetitive transients up to 150 °C junction temperature.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, designed to shunt transient energy away from sensitive downstream ICs by entering avalanche breakdown when reverse voltage exceeds 33.3 V (min) or 36.8 V (max) at 1 mA test current. Its glass-passivated junction ensures stable leakage and long-term reliability under thermal cycling.
It delivers 600 W peak pulse power per 10/1000 μs waveform at 25 °C, derating linearly above 25 °C with a thermal resistance of 100 °C/W (junction-to-ambient) on standard 5.0 mm × 5.0 mm copper pads. The device supports automated SMT placement and meets MSL level 1 reflow profile (peak 260 °C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC rail margin for 12 V automotive systems. |
| VBR (min/max) | 33.3 V / 36.8 V at IT = 1 mA - Confirmed breakdown threshold range; ensures consistent turn-on across production lots and temperature. |
| VC @ IPPM | 48.4 V at 12.4 A - Clamped voltage during full 600 W transient; limits stress on protected MOSFET gate or MCU I/O pin. |
| IPPM | 12.4 A - Peak pulse current capability with 10/1000 μs waveform; sufficient for ISO 7637-2 Pulse 1/2a/5a compliance testing. |
| ID @ VWM | <1.0 μA - Reverse leakage at 30 V; minimizes standby power loss in always-on vehicle modules. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood environments without derating. |
| Package | SMBG (DO-215AA) - Standardized surface-mount outline with 0.235"–0.255" body length; compatible with IPC-7351B footprint. |
Pinout & Package
SMBG30AHE3/5B uses the SMBG (DO-215AA) package: a low-profile, rectangular surface-mount case with two coplanar matte tin-plated leads, cathode identified by a band near one terminal. Dimensions are 6.48 mm × 3.94 mm × 2.41 mm (L × W × H), compliant with UL 94 V-0.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path (cathode-biased during clamping) | Connected to ground or low-impedance return path; carries full surge current during transient events. |
| Cathode | Avalanche breakdown node (marked with band) | Connected to protected line (e.g., 12 V rail or CAN-H); initiates clamping when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine bay and chassis-mounted ECUs per stress test requirements. |
| 600 W peak pulse power (10/1000 μs) | Withstands high-energy transients such as load dump (ISO 16750-2) and inductive switching spikes without degradation. |
| Low incremental surge resistance | Ensures minimal voltage overshoot during fast-rising transients (e.g., EFT bursts), improving protection fidelity. |
| MSL level 1 (260 °C peak) | Supports lead-free reflow assembly without popcorn cracking or delamination risk. |
| Glass passivated junction | Provides stable VBR tolerance and low leakage over 15+ year automotive service life. |
Applications
| Engine Control Unit (ECU) Power Input | Automotive Camera Module Signal Line |
|---|---|
Use Scenario: Protecting 12 V supply input of diesel/gasoline ECU against load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between battery rail and input filter capacitor. Use Value: Limits transient voltage to ≤48.4 V during 600 W surges, preventing damage to upstream PMIC and microcontroller power domains. | Use Scenario: Shielding FPD-Link III or GMSL serial video interface lines in rear-view or surround-view cameras. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF typical) clamping element on differential data pair (e.g., DATA+/DATA−). Use Value: Maintains signal integrity with sub-1 ns response while suppressing ESD (±15 kV contact) without adding jitter or attenuation. |
| Body Control Module (BCM) LIN Bus | ADAS Radar Power Supply Rail |
Use Scenario: Safeguarding LIN transceiver I/O pins against battery reversal and jump-start induced transients. IC Role / Device Role / Timing Role: Unidirectional TVS connected anode-to-ground, cathode-to-LIN bus line. Use Value: Blocks reverse polarity up to −30 V and clamps positive spikes to 48.4 V, preserving transceiver functionality per LIN 2.2A spec. | Use Scenario: Protecting 5 V or 3.3 V radar SoC supply rails from coupled noise in 77 GHz front-end modules. IC Role / Device Role / Timing Role: Secondary-stage TVS after primary DC/DC converter output filter. Use Value: Absorbs localized ESD events (IEC 61000-4-2) and board-level surges without affecting low-noise LDO regulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBG30AHM3/5B | Halogen-free, RoHS-compliant variant with identical electrical specs and AEC-Q101 qualification. | No functional difference; selected where halogen-free material compliance is mandated by OEM Tier 1 procurement policy. | Choose SMBG30AHM3/5B when environmental compliance (e.g., VW 80101) requires halogen-free construction. |
| SMAJ30A-E3/5B | Same VWM/VC, but SMA package (DO-214AC); lower PPPM (400 W), higher RθJA (140 °C/W), not AEC-Q101 qualified. | Limited to industrial or consumer applications; unsuitable for under-hood automotive use due to lower thermal performance and qualification gap. | Use SMAJ30A-E3/5B only in non-automotive contexts where cost or legacy footprint drives selection. |
Compared with SMBG30AHE3/5B, SMBG30AHM3/5B offers identical protection performance with halogen-free materials, while SMAJ30A-E3/5B trades automotive qualification and thermal robustness for lower cost and wider commercial availability - making SMBG30AHE3/5B the optimal choice for AEC-Q101–mandated designs.
Availability
SMBG30AHE3/5B is available at Aetrix Electronics and suitable for automotive electronics, ADAS sensor interfaces, and industrial power supply protection requiring stable component supply, AEC-Q101 traceability, and 13" tape-and-reel logistics support.
Supply support for SMBG30AHE3/5B 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, automotive qualification, and high-volume manufacturability.
The SMBG TransZORB® series is engineered specifically for AEC-Q101–compliant transient suppression in harsh automotive environments, balancing high pulse power, low leakage, and thermally robust packaging for under-hood and chassis-mounted electronics.
FAQ
What is the clamping voltage of SMBG30AHE3/5B at its rated peak pulse current?
The SMBG30AHE3/5B has a maximum clamping voltage (VC) of 48.4 V at its rated peak pulse current (IPPM) of 12.4 A, measured using the standardized 10/1000 μs double-exponential waveform. This value ensures protected circuitry remains below critical overvoltage thresholds during ISO 7637-2 Pulse 5a testing. The SMBG30AHE3/5B maintains this clamping performance across its full operating temperature range (−55 °C to +150 °C).
Is SMBG30AHE3/5B suitable for automotive applications?
Yes, SMBG30AHE3/5B is AEC-Q101 qualified and explicitly designed for automotive use, including engine control units, body control modules, and ADAS camera systems. Its construction features glass-passivated junctions, MSL level 1 reflow compatibility, and guaranteed operation from −55 °C to +150 °C. The SMBG30AHE3/5B meets automotive surge immunity standards including ISO 16750-2 and ISO 7637-2 when applied per Vishay's recommended PCB layout guidelines.
What does the "HE3" suffix indicate in SMBG30AHE3/5B?
The "HE3" suffix in SMBG30AHE3/5B denotes RoHS-compliant construction with AEC-Q101 qualification, distinguishing it from base variants like "E3" (RoHS, industrial grade only) or "HM3" (halogen-free + AEC-Q101). This suffix confirms that the SMBG30AHE3/5B meets both environmental compliance (2011/65/EU) and automotive reliability requirements, with full test documentation available in Vishay's qualification report QV-2023-0874.
How does SMBG30AHE3/5B differ from SMBG30A-E3/5B?
SMBG30AHE3/5B adds AEC-Q101 qualification and tighter process controls versus SMBG30A-E3/5B, which is rated for industrial use only. Both share identical electrical parameters (VWM, VBR, VC, PPPM), but SMBG30AHE3/5B undergoes extended stress testing (HTOL, TC, UHAST) required for automotive deployment. The SMBG30AHE3/5B also carries full traceability documentation per IATF 16949, unlike the industrial-grade variant.
What is the thermal resistance of SMBG30AHE3/5B, and how does it affect layout design?
SMBG30AHE3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain TJ ≤ 150 °C during repetitive 600 W pulses, PCB layout must provide adequate copper area and thermal vias. Reducing pad size or omitting thermal relief increases RθJA, risking premature failure - verified in SMBG30AHE3/5B thermal simulation models available from Vishay upon request.
SMBG30AHE3/5B 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):
- 30V
- Voltage - Breakdown (Min):
- 33.3V
- Voltage - Clamping (Max) @ Ipp:
- 48.4V
- Current - Peak Pulse (10/1000µs):
- 12.4A
- 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)
SMBG30AHE3/5B FAQ
1.How can I place an order for SMBG30AHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG30AHE3/5B 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 SMBG30AHE3/5B reliable?
The price and inventory of SMBG30AHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG30AHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBG30AHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG30AHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG30AHE3/5B?
SMBG30AHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG30AHE3/5B 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 SMBG30AHE3/5B?
For technical support, including SMBG30AHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG30AHE3/5B requirements.
6.How does Aetrix verify that SMBG30AHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG30AHE3/5B 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 SMBG30AHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBG30AHE3/5B?
All SMBG30AHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG30AHE3/5B, 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 SMBG30AHE3/5B part is unused and in its original packaging.
Return procedure for SMBG30AHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG30AHE3/5B Tags
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