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Vishay General Semiconductor - Diodes Division SMB10J30AHE3/52
- Part No.:
- SMB10J30AHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J30AHE3/52.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,160
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Product details
Overview
SMB10J30AHE3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection on DC power rails and signal lines. It features a 30 V stand-off voltage (VWM), 33.3–36.8 V breakdown voltage (VBR), 48.4 V clamping voltage (VC) at 20.7 A peak pulse current (IPPM), and 1000 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed in automotive ECUs, industrial sensor interfaces, and power supply input stages.
For engineers reviewing the SMB10J30AHE3/52 datasheet, SMB10J30AHE3/52 pinout, SMB10J30AHE3/52 application, or SMB10J30AHE3/52 equivalent, key selection criteria include AEC-Q101 qualification, unidirectional polarity with cathode band marking, low incremental surge resistance, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a clamping-type overvoltage protector, leveraging an avalanche breakdown mechanism to limit transient voltages within nanoseconds. Its glass-passivated junction ensures stable VBR tolerance and long-term reliability under repetitive surge stress, while its MSL Level 1 rating supports lead-free reflow up to 260 °C peak.
The device is optimized for unidirectional DC line protection: it blocks up to 30 V in normal operation (VWM), triggers at ≥33.3 V (VBR min), and clamps induced transients to ≤48.4 V at 20.7 A (IPPM), limiting energy dissipation via low Rsurge and thermal resistance (RθJL = 20 °C/W).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA; defines safe DC rail margin. |
| VBR (min/max) | 33.3 V / 36.8 V at 1.0 mA test current - tight breakdown window ensures predictable turn-on across temperature and unit variation. |
| VC @ IPPM | 48.4 V at 20.7 A (10/1000 µs) - clamping voltage directly limits downstream IC stress during lightning or ESD events. |
| PPPM | 1000 W - peak pulse power handling capacity determines survivability against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω). |
| IFSM | 100 A (8.3 ms half-sine) - surge current rating validates robustness against inductive switch-off transients in motor drivers. |
| TJ max | +150 °C - junction temperature limit enables use in under-hood automotive environments without derating. |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with matte tin-plated leads; polarity indicated by cathode band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode of internal PN junction | Connected to protected line; clamps positive transients to ground when reverse-biased. |
| Anode (non-banded end) | Cathode of internal PN junction | Typically tied to system ground or lower-potential reference; completes clamping path. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics including engine control, ADAS sensors, and body modules. |
| Glass passivated junction | Ensures stable VBR over lifetime and immunity to moisture-induced parameter drift. |
| MSL Level 1 (260 °C) | Supports standard lead-free reflow without pre-baking or special handling. |
| Low profile SMB package | 0.220" × 0.130" footprint enables dense PCB layouts while maintaining 1000 W surge capability. |
| 1000 W peak pulse power | Provides single-event protection against IEC 61000-4-5 4 kV surge (2 Ω source impedance). |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontroller inputs in vehicle door modules from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VIN and GND to clamp spikes above 30 V before they reach LDO or MCU pins. Use Value: Limits clamped voltage to 48.4 V, well below typical 60 V absolute maximum ratings of automotive MCUs and power management ICs. |
Use Scenario: Shielding 4–20 mA current loop transmitter outputs from field wiring surges in factory automation systems. IC Role / Device Role / Timing Role: Series-connected TVS on loop supply line to absorb fast-rising transients induced by relay switching or ESD contact. Use Value: Sub-1 ns response time prevents transient propagation into precision op-amps and DACs driving the loop. |
| DC-DC Converter Input Stage | USB-C Power Delivery Line |
Use Scenario: Safeguarding buck converter front-end MOSFETs and controllers against inductive kickback from upstream fuse or relay opening. IC Role / Device Role / Timing Role: Parallel-mounted TVS across input capacitor to shunt >30 V transients away from switching FET gate oxide and controller VCC. Use Value: 100 A IFSM rating withstands repeated 8.3 ms inductive surges without degradation, supporting industrial 24 V systems. |
Use Scenario: Adding secondary-level surge protection on USB-C VBUS line after primary protection, targeting residual transients missed by front-end MOVs. IC Role / Device Role / Timing Role: Unidirectional TVS between VBUS and GND to clamp overshoot during hot-plug or PD contract negotiation glitches. Use Value: 30 V VWM aligns with USB-C 20 V max nominal, allowing clean operation up to 30 V while clamping beyond that threshold. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30AHE3/52 | Same SMB package, identical VWM/VBR/VC specs, but rated for 600 W PPPM (vs. 1000 W for SMB10J30AHE3/52). | Limited to lower-energy transients (e.g., IEC 61000-4-2 ESD only); insufficient for IEC 61000-4-5 Level 3+ surges. | Select SMB10J30AHE3/52 when 1000 W surge immunity is required; SMBJ30AHE3/52 suits cost-sensitive, lower-risk consumer ports. |
| 1.5SMC30AHE3/A | Higher-power SMC package (1500 W PPPM), same 30 V VWM, but larger footprint (0.305" × 0.220") and higher RθJA (50 °C/W). | Better for high-reliability industrial power supplies where board space allows and thermal mass improves longevity. | Choose 1.5SMC30AHE3/A for legacy designs needing higher power margin; SMB10J30AHE3/52 offers best power density in compact SMB layout. |
Compared with SMBJ30AHE3/52 and 1.5SMC30AHE3/A, SMB10J30AHE3/52 delivers the highest power-per-area ratio among Vishay's 30 V unidirectional TVS diodes, enabling robust surge protection in space-constrained automotive and portable industrial modules without sacrificing AEC-Q101 compliance.
Availability
SMB10J30AHE3/52 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor signal conditioning circuits, and DC-DC converter input protection requiring stable component supply and full AEC-Q101 traceability.
Supply support for SMB10J30AHE3/52 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and automotive-grade validation.
The SMB10JxxA series targets high-density transient suppression in harsh environments, combining AEC-Q101 qualification, glass-passivated junctions, and 1000 W surge capability in the compact SMB footprint.
FAQ
What is the clamping voltage of SMB10J30AHE3/52 at its rated peak pulse current?
The SMB10J30AHE3/52 has a maximum clamping voltage (VC) of 48.4 V when subjected to its specified peak pulse current (IPPM) of 20.7 A using the 10/1000 µs waveform. This value is measured under standardized test conditions per ANSI/IEEE C62.35 and ensures predictable overvoltage limiting for downstream components in the protected circuit. The SMB10J30AHE3/52 maintains this clamping performance across its qualified operating temperature range.
Is SMB10J30AHE3/52 suitable for automotive applications?
Yes, SMB10J30AHE3/52 is AEC-Q101 qualified and specifically designed for automotive use, including engine control units, body electronics, and ADAS sensor interfaces. Its construction features glass-passivated junctions, MSL Level 1 moisture sensitivity, and full qualification across temperature cycling, HTRB, and ESD tests. The "HE3" suffix explicitly denotes RoHS-compliant and AEC-Q101 qualified variants, confirming SMB10J30AHE3/52 meets automotive reliability requirements.
What does the "HE3/52" suffix mean in SMB10J30AHE3/52?
In SMB10J30AHE3/52, "HE3" indicates RoHS-compliant construction with AEC-Q101 qualification, while "52" specifies the packaging format: 7" diameter plastic tape and reel containing 750 units. This ordering code ensures traceable sourcing of automotive-grade parts with verified reflow compatibility (peak 260 °C) and whisker-resistant matte tin plating per JESD201 Class 2. The full designation SMB10J30AHE3/52 uniquely identifies this qualified variant of the SMB10J30AHE3/52 device.
How does SMB10J30AHE3/52 differ from bidirectional TVS diodes like SMB8J30CAHE3/52?
SMB10J30AHE3/52 is unidirectional and intended for DC line protection where polarity is fixed (e.g., VIN-to-GND), offering 1000 W PPPM and 100 A IFSM. In contrast, SMB8J30CAHE3/52 is bidirectional with symmetrical clamping for AC or floating lines, rated at 800 W PPPM and no IFSM rating. The SMB10J30AHE3/52 uses a cathode band for polarity identification, whereas SMB8J30CAHE3/52 has no marking. Their breakdown and clamping voltages are closely matched, but conduction behavior differs fundamentally.
What PCB pad layout is recommended for optimal thermal and surge performance of SMB10J30AHE3/52?
Vishay specifies a minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad area for each terminal of SMB10J30AHE3/52 to achieve rated 1000 W peak pulse power and maintain junction temperature within limits. These pads must be connected to internal or external ground/power planes via multiple thermal vias. Deviating from this layout reduces surge current handling and increases clamping voltage due to elevated thermal resistance - the SMB10J30AHE3/52 datasheet (Fig. 2) provides derating curves based on pad size and copper thickness.
SMB10J30AHE3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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):
- 20.7A
- Power - Peak Pulse:
- 1000W (1kW)
- 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 (SMB)
SMB10J30AHE3/52 FAQ
1.How can I place an order for SMB10J30AHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J30AHE3/52 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 SMB10J30AHE3/52 reliable?
The price and inventory of SMB10J30AHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J30AHE3/52 is usually 5 days.
3.What payment methods are accepted for SMB10J30AHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J30AHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J30AHE3/52?
SMB10J30AHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J30AHE3/52 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 SMB10J30AHE3/52?
For technical support, including SMB10J30AHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J30AHE3/52 requirements.
6.How does Aetrix verify that SMB10J30AHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMB10J30AHE3/52 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 SMB10J30AHE3/52 meets industry standards.
7.What is the process for return or replacement of SMB10J30AHE3/52?
All SMB10J30AHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J30AHE3/52, 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 SMB10J30AHE3/52 part is unused and in its original packaging.
Return procedure for SMB10J30AHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J30AHE3/52 Tags
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