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Vishay General Semiconductor - Diodes Division SMBG30HE3/5B
- Part No.:
- SMBG30HE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG30HE3/5B.pdf
- Description:
- TVS DIODE 30VWM 53.5VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,294
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Product details
Overview
SMBG30HE3/5B from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-215AA (SMBG) package, designed for clamping inductive switching transients and lightning-induced surges on signal/power lines. It features 30 V stand-off voltage (VWM), 33.3–36.8 V breakdown voltage (VBR) at 1 mA, 48.4 V maximum clamping voltage (VC) at 12.4 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 µs waveform).
For engineers reviewing the SMBG30HE3/5B datasheet, SMBG30HE3/5B pinout, SMBG30HE3/5B application, or SMBG30HE3/5B equivalent, this AEC-Q101 qualified, RoHS-compliant TVS provides validated surge protection for automotive sensor interfaces, industrial I/O lines, telecom line cards, and DC power rail inputs where bidirectional clamping and MSL Level 1 reflow compatibility are required.
Technical Context
The SMBG30HE3/5B operates as a bi-directional avalanche diode with symmetrical clamping behavior in both polarities, enabling protection of AC-coupled or floating signal paths without polarity constraints. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM = 30 V) across -55 °C to +150 °C operating temperature range.
It delivers 600 W peak pulse power handling per 10/1000 µs waveform under derated conditions, with thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), supporting robust surge dissipation on standard 5.0 mm × 5.0 mm copper pads. The device meets UL 94 V-0 flammability and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - Maximum continuous reverse working voltage before clamping initiates; defines safe operating margin for 24 V nominal systems. |
| VBR (min/max) | 33.3 V / 36.8 V at IT = 1 mA - Confirmed avalanche breakdown range; ensures predictable turn-on within ±5.5% tolerance. |
| VC @ IPPM | 48.4 V at 12.4 A - Clamped voltage during 600 W transient; limits downstream IC stress to <49 V under worst-case surge. |
| PPPM | 600 W (10/1000 µs) - Peak surge energy absorption capacity; supports IEC 61000-4-5 Level 4 (4 kV) compliance with proper layout. |
| ID @ VWM | ≤1.0 µA - Ultra-low reverse leakage at rated stand-off; preserves signal integrity and minimizes standby power loss. |
| TJ max. | +150 °C - Extended junction temperature rating enables use in under-hood automotive and high-ambient industrial environments. |
| Package | DO-215AA (SMBG) - Surface-mount gull-wing package with 2.10 mm lead pitch; compatible with automated SMT placement and IPC-A-610 Class 2/3 assembly. |
Pinout & Package
DO-215AA (SMBG) package: gull-wing surface-mount outline with two terminals; no polarity marking for bi-directional configuration; matte tin-plated leads compliant with J-STD-002 and JESD22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional avalanche junction | Either terminal serves as anode or cathode depending on transient polarity; no orientation required during placement. |
| Case (exposed metal pad) | Thermal conduction path | Not electrically connected; provides mechanical anchoring and aids heat dissipation when soldered to thermal pad. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD47. |
| MSL Level 1 rating | Unlimited floor life at ≤30 °C/60% RH; supports lead-free reflow up to 260 °C peak without baking. |
| Glass-passivated junction | Ensures stable VBR over time and temperature; eliminates parameter drift due to moisture or contamination. |
| 600 W peak pulse power | Handles repetitive 10/1000 µs surges at 0.01% duty cycle-sufficient for motor drive commutation spikes and relay coil flyback. |
| UL 94 V-0 molding compound | Self-extinguishing encapsulation material; satisfies fire-safety requirements for industrial and telecom equipment enclosures. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bi-directional clamping element placed directly at connector entry point to shunt transients before reaching signal conditioning circuitry. Use Value: Limits transient voltage to ≤48.4 V, preventing damage to 3.3 V/5 V microcontrollers and ADC front-ends while maintaining signal fidelity during normal operation. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers against field-wiring induced surges from solenoid valves and contactors. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V DC input channels, mounted adjacent to terminal block to minimize inductance in surge path. Use Value: Absorbs 600 W surges without degradation, enabling >100,000 surge cycles per IEC 61000-4-5 and eliminating need for secondary protection stages. |
| Telecom Line Card Protection | DC Power Rail Clamp |
Use Scenario: Shielding Ethernet PHY interfaces and RS-485 transceivers on base station line cards from lightning-induced common-mode surges on outdoor cabling. IC Role / Device Role / Timing Role: Bi-directional TVS placed differential-mode across data pairs and common-mode to chassis ground to suppress EFT and surge events. Use Value: Symmetrical clamping ensures equal protection for positive/negative transients; low capacitance (<100 pF typical) avoids signal integrity loss at 100 Mbps. |
Use Scenario: Clamping 12 V/24 V DC power rails feeding motor drivers or display backlights against reverse battery connection and inductive kickback. IC Role / Device Role / Timing Role: Stand-off-rated TVS connected between rail and ground to clamp overvoltage while allowing normal regulation up to 30 V. Use Value: Withstands 100 A non-repetitive forward surge (IFSM), protecting upstream DC/DC converters and FETs from catastrophic failure during fault conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30CA | Same VWM (30 V), identical DO-214AA package, but lower PPPM (600 W same), higher VC (48.4 V vs. 49.0 V), and non-AEC-Q101 rated. | Lacks automotive qualification; suitable for commercial/industrial use only; identical PCB footprint. | Select SMBJ30CA for cost-sensitive non-automotive designs where AEC-Q101 is not mandated. |
| SMAJ30A | Uni-directional variant (cathode-banded), same VWM/VBR/VC specs, but smaller DO-214AC (SMA) package with lower thermal mass and 400 W PPPM rating. | Requires polarity-aware layout; limited to unidirectional rails; less robust thermal performance under sustained surge duty. | Choose SMAJ30A only when board space is constrained and circuit polarity is fixed, accepting reduced surge endurance. |
Compared with SMBJ30CA and SMAJ30A, the SMBG30HE3/5B uniquely combines AEC-Q101 qualification, bi-directional symmetry, and DO-215AA's superior thermal dissipation-making it the preferred choice for automotive and high-reliability industrial deployments requiring zero-layout rework and long-term surge resilience.
Availability
SMBG30HE3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line card protection requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMBG30HE3/5B 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMBG series was developed for high-energy transient suppression in harsh environments, targeting automotive, industrial automation, and infrastructure applications demanding AEC-Q101 compliance and robust surge immunity.
FAQ
What is the key difference between SMBG30HE3/5B and SMBG30A?
The SMBG30HE3/5B is AEC-Q101 qualified and uses the HE3 suffix indicating enhanced reliability testing for automotive applications, whereas SMBG30A is commercial-grade only. Both share identical electrical specs (VWM = 30 V, VC = 48.4 V), but SMBG30HE3/5B undergoes additional stress screening including temperature cycling and HTRB per JESD47. The '5B' denotes 13-inch tape-and-reel packaging (3200 units per reel).
Does SMBG30HE3/5B require orientation during PCB placement?
No-SMBG30HE3/5B is a bi-directional TVS diode with symmetrical avalanche characteristics, meaning either terminal can serve as anode or cathode depending on transient polarity. There is no cathode band marking on the DO-215AA package, eliminating orientation constraints during automated placement and simplifying layout design for AC-coupled or floating nodes.
What is the maximum clamping voltage of SMBG30HE3/5B under surge conditions?
The SMBG30HE3/5B has a maximum clamping voltage (VC) of 48.4 V at 12.4 A peak pulse current (IPPM), measured using the standardized 10/1000 µs double-exponential waveform. This value is guaranteed across the full operating temperature range (-55 °C to +150 °C) and defines the upper voltage limit imposed on protected circuitry during transient events.
Can SMBG30HE3/5B be used in place of a uni-directional TVS like SMAJ30A?
SMBG30HE3/5B can replace SMAJ30A in bi-directional or polarity-agnostic applications, but not in circuits requiring strict unidirectional conduction (e.g., DC rail with reverse-polarity protection). SMAJ30A has a cathode band and blocks reverse current until breakdown; SMBG30HE3/5B conducts symmetrically. Layout must verify no unintended conduction paths exist in the target system before substitution.
What does the 'HE3' suffix signify in SMBG30HE3/5B?
The 'HE3' suffix in SMBG30HE3/5B indicates RoHS-compliant construction with AEC-Q101 qualification and JESD201 Class 2 whisker resistance. 'H' denotes automotive grade, 'E3' confirms lead-free matte tin plating meeting J-STD-002 solderability and JEDEC whisker test requirements-critical for high-reliability automotive and industrial deployments.
SMBG30HE3/5B 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:
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG30HE3/5B FAQ
1.How can I place an order for SMBG30HE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG30HE3/5B 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 SMBG30HE3/5B reliable?
The price and inventory of SMBG30HE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG30HE3/5B is usually 5 days.
3.What payment methods are accepted for SMBG30HE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG30HE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG30HE3/5B?
SMBG30HE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG30HE3/5B 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 SMBG30HE3/5B?
For technical support, including SMBG30HE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG30HE3/5B requirements.
6.How does Aetrix verify that SMBG30HE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG30HE3/5B 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 SMBG30HE3/5B meets industry standards.
7.What is the process for return or replacement of SMBG30HE3/5B?
All SMBG30HE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG30HE3/5B, 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 SMBG30HE3/5B part is unused and in its original packaging.
Return procedure for SMBG30HE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG30HE3/5B Tags
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