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Vishay General Semiconductor - Diodes Division SMBG30AHE3/52
- Part No.:
- SMBG30AHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG30AHE3/52.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,416
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Product details
Overview
SMBG30AHE3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMBG (DO-215AA) package, rated for 30 V stand-off voltage (VWM), 33.3–36.8 V breakdown voltage (VBR), 48.4 V clamping voltage (VC) at 12.4 A peak pulse current, and 600 W peak pulse power (10/1000 μs). It protects MOSFETs and signal lines in automotive powertrain control modules against inductive switching transients.
For engineers reviewing the SMBG30AHE3/52 datasheet, SMBG30AHE3/52 pinout, SMBG30AHE3/52 application, or SMBG30AHE3/52 equivalent, this AEC-Q101 qualified TVS offers verified clamping performance, low incremental surge resistance, and MSL Level 1 reflow compatibility - critical for under-hood automotive electronics requiring long-term reliability under thermal cycling and ESD stress.
Technical Context
This device operates as a unidirectional avalanche diode with glass-passivated junction, triggering conduction when reverse voltage exceeds VBR (33.3–36.8 V at 1 mA), clamping transient energy to ≤48.4 V at 12.4 A. Its 100 °C/W junction-to-ambient thermal resistance and 150 °C max junction temperature support operation in high-temperature engine bay environments.
Designed for 10/1000 μs waveform compliance, it delivers 600 W peak pulse power with 0.01% duty cycle repeatability and withstands 100 A non-repetitive forward surge (8.3 ms half-sine), making it suitable for protecting 12 V automotive power rails and CAN bus interface stages against load dump and ISO 7637-2 pulses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - Maximum continuous reverse operating voltage before clamping begins; sets threshold for protection of 24 V nominal systems. |
| VBR (min/max) | 33.3 V / 36.8 V at 1 mA - Confirmed breakdown range ensures reliable turn-on margin above VWM without premature conduction. |
| VC @ IPPM | 48.4 V at 12.4 A - Clamped voltage during 10/1000 μs transient; limits stress on downstream 33 V-rated ICs. |
| PPPM | 600 W - Peak pulse power handling capacity per JEDEC standard; supports robust immunity to ISO 16750-2 pulse 5a/b. |
| IFSM | 100 A - Single half-sine surge rating (8.3 ms); enables survival of automotive load-dump events without degradation. |
| TJ max | +150 °C - Maximum junction temperature; validated for under-hood placement near ECUs and power converters. |
| MSL Level | Level 1 (260 °C peak) - Supports standard lead-free reflow without preconditioning or baking. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount gull-wing, matte tin-plated leads, 0.255" × 0.155" footprint (6.48 mm × 3.94 mm), 0.030" lead thickness, cathode band marked on anode-side end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction; tied to system ground in unidirectional TVS configuration. | Provides low-impedance return path during clamping; must be connected to lowest-impedance ground plane to minimize VC overshoot. |
| Cathode | Protected line connection; receives transient voltage from I/O or power rail. | Connected directly to the node being protected (e.g., gate of high-side MOSFET); polarity band identifies this terminal. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including powertrain, body control, and ADAS modules per stress test requirements. |
| 600 W peak pulse power (10/1000 μs) | Enables single-device protection against severe transients like ISO 7637-2 Pulse 5a (load dump) without derating. |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes overvoltage exposure to protected ICs - e.g., keeps 33 V logic inputs below absolute maximum rating during clamping. |
| Glass-passivated junction | Ensures stable VBR over lifetime and humidity exposure; eliminates risk of parametric shift in humid under-hood environments. |
| MSL Level 1, 260 °C peak | Eliminates need for moisture-sensitive handling or pre-bake; compatible with standard SMT assembly lines. |
Applications
| Automotive Power Rail Protection | Industrial Motor Drive Gate Protection |
|---|---|
Use Scenario: Suppresses load dump transients (up to 60 V, 200 ms) on 24 V battery-fed ECUs in commercial vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC input, clamping within nanoseconds to prevent regulator latch-up. Use Value: Limits peak voltage to 48.4 V, ensuring input stage survival where 60 V-rated regulators would otherwise be required. | Use Scenario: Shields high-side N-channel MOSFET gates from Miller-induced voltage spikes during fast IGBT switching in servo drives. IC Role / Device Role / Timing Role: Connected between gate and source, absorbing <100 ns dv/dt-induced overshoot before gate oxide breakdown occurs. Use Value: 12.4 A peak pulse capability handles repetitive gate ringing energy without degradation over >10⁶ cycles. |
| Automotive Sensor Signal Line Protection | Telecom Interface Surge Suppression |
Use Scenario: Protects LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) in engine control units exposed to ignition noise. IC Role / Device Role / Timing Role: Placed inline on signal line with series resistor, acting as last-line clamp before transceiver ESD diodes. Use Value: 48.4 V clamping voltage preserves signal integrity while preventing latch-up of 5 V tolerant transceivers. | Use Scenario: Safeguards RS-485 transceivers in outdoor telecom cabinets subjected to lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Installed at connector entry point, shunting common-mode transients to chassis ground before reaching PHY layer. Use Value: 600 W rating meets IEC 61000-4-5 Level 4 (4 kV/2 Ω) requirements when paired with appropriate series impedance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30A-E3/52 | Same VWM (30 V), but lower PPPM = 600 W (same), higher VC = 48.4 V (identical), same SMB package; differs only in marking code and RoHS suffix. | No functional difference; both AEC-Q101 qualified, same thermal and electrical specs. | Select SMBG30AHE3/52 when AEC-Q101 documentation traceability and HE3 suffix (halogen-free + AEC-Q101) are contractually required. |
| SMCJ30AHE3/A | Higher package power rating (1500 W), larger SMC (DO-214AB) footprint, same VWM/VBR, VC = 48.4 V, but 2× PCB area and different thermal profile. | Used where higher single-pulse energy (e.g., ISO 16750-2 Pulse 5b) or longer transient duration demands greater surge margin. | Choose SMCJ30AHE3/A only if system-level testing confirms need for >600 W capability; otherwise SMBG30AHE3/52 saves board space and cost. |
Compared with SMBJ30A-E3/52, SMBG30AHE3/52 provides identical protection performance with enhanced material compliance (halogen-free + AEC-Q101), while SMCJ30AHE3/A trades compactness for higher energy handling - making SMBG30AHE3/52 optimal for space-constrained automotive modules needing certified reliability.
Availability
SMBG30AHE3/52 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial motor drive gate circuits, and sensor signal line hardening requiring stable component supply across multi-year production programs.
Supply support for SMBG30AHE3/52 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, TVS devices, and MOSFETs with emphasis on automotive-grade reliability and AEC-Q101 validation.
The SMBG series was engineered specifically for high-reliability surface-mount transient suppression in automotive and industrial environments, balancing compact size, high surge capability, and process-controlled parametric consistency.
FAQ
What is the clamping voltage of SMBG30AHE3/52 and how is it measured?
The SMBG30AHE3/52 has a maximum clamping voltage (VC) of 48.4 V, measured at 12.4 A peak pulse current using the standardized 10/1000 μs double-exponential waveform per IEC 61000-4-5. This value is guaranteed across temperature and lifetime, and appears in the Electrical Characteristics table of Vishay's Document Number 88456. The SMBG30AHE3/52 maintains this clamping performance under repeated surge conditions when mounted per recommended pad layout.
Is SMBG30AHE3/52 suitable for bidirectional transient protection?
No, SMBG30AHE3/52 is a unidirectional TVS diode - its cathode band denotes polarity, and it conducts only during reverse overvoltage events. For bidirectional protection, Vishay offers the SMBG30CA variant (with CA suffix), which has symmetrical breakdown in both directions. Using SMBG30AHE3/52 in a bidirectional circuit would leave positive-going transients unprotected, risking damage to downstream components.
Does SMBG30AHE3/52 meet automotive qualification standards?
Yes, SMBG30AHE3/52 is AEC-Q101 qualified, as confirmed by the "HE3" suffix and explicit note in Vishay's Document Number 88456 (page 3, Ordering Information section). This qualification covers stress tests including HTGB, AC-H3TRB, TC, UHAST, and mechanical shock, validating its use in engine control units, transmission controllers, and other automotive electronic modules requiring zero-defect reliability.
What is the thermal resistance of SMBG30AHE3/52 and how does it affect layout?
The SMBG30AHE3/52 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, as specified in the Thermal Characteristics table. To maintain safe junction temperatures under repeated surges, PCB layout must replicate this minimum pad area and avoid thermal bottlenecks - reducing pad size increases RθJA, potentially exceeding the 150 °C TJ max limit during high-duty-cycle transients.
How does the HE3 suffix on SMBG30AHE3/52 differ from E3 or M3?
The HE3 suffix on SMBG30AHE3/52 indicates RoHS-compliant, halogen-free, and AEC-Q101 qualified construction - distinct from E3 (RoHS-compliant, industrial grade only) and M3 (halogen-free + RoHS, industrial grade). HE3 ensures full automotive qualification traceability and material compliance required for Tier 1 automotive BOMs, whereas E3/M3 lack AEC-Q101 validation. All three share identical electrical and thermal specs, but only HE3 satisfies OEM automotive release requirements.
SMBG30AHE3/52 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):
- 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)
SMBG30AHE3/52 FAQ
1.How can I place an order for SMBG30AHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG30AHE3/52 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 SMBG30AHE3/52 reliable?
The price and inventory of SMBG30AHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG30AHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBG30AHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG30AHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG30AHE3/52?
SMBG30AHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG30AHE3/52 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 SMBG30AHE3/52?
For technical support, including SMBG30AHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG30AHE3/52 requirements.
6.How does Aetrix verify that SMBG30AHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG30AHE3/52 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 SMBG30AHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBG30AHE3/52?
All SMBG30AHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG30AHE3/52, 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 SMBG30AHE3/52 part is unused and in its original packaging.
Return procedure for SMBG30AHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG30AHE3/52 Tags
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