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Vishay General Semiconductor - Diodes Division SMB10J30HE3/5B
- Part No.:
- SMB10J30HE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J30HE3/5B.pdf
- Description:
- TVS DIODE 30VWM 53.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,966
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Product details
Overview
SMB10J30HE3/5B from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AA (SMB) 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) at 1 mA, 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. It is AEC-Q101 qualified and used in automotive power supply input stages.
For engineers reviewing the SMB10J30HE3/5B datasheet, SMB10J30HE3/5B pinout, SMB10J30HE3/5B application, or SMB10J30HE3/5B equivalent, key selection criteria include clamping performance under 10/1000 µs surges, AEC-Q101 qualification status, thermal resistance (RθJA = 72 °C/W), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a unidirectional clamping device, leveraging an avalanche breakdown mechanism to limit transient overvoltages before they damage downstream ICs or MOSFETs. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and robust surge handling up to 100 A IFSM (8.3 ms half-sine).
The device is rated for continuous operation from –55 °C to +150 °C junction temperature and exhibits low incremental surge resistance, enabling fast response (<1 ns) to ESD and lightning-induced transients. Its MSL Level 1 rating and matte tin-plated leads support lead-free reflow soldering per J-STD-020 at 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - Maximum continuous reverse operating voltage before significant leakage begins; defines safe DC rail margin. |
| VBR (min/max) | 33.3 V / 36.8 V at 1 mA - Confirmed breakdown threshold range; ensures reliable triggering above nominal rail. |
| VC @ IPPM | 48.4 V at 20.7 A - Clamped voltage during 10/1000 µs surge; determines maximum stress on protected circuitry. |
| PPPM | 1000 W - Peak pulse power handling capability; enables protection against IEC 61000-4-5 Level 4 surges. |
| RθJA | 72 °C/W - Junction-to-ambient thermal resistance; dictates required PCB copper area (0.2" × 0.2") for thermal management. |
| IFSM | 100 A - Non-repetitive forward surge current rating; supports protection against load dump events in automotive 12 V systems. |
| Polarity | Unidirectional - Cathode marked by band; blocks reverse current until breakdown, ideal for DC power line protection. |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, molded plastic case with matte tin-plated leads. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); cathode indicated by color band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / surge return path | Connected to lower-potential side (e.g., GND or return rail); completes clamping loop during transient. |
| Cathode | Reverse-biased terminal / clamping node | Connected to protected line (e.g., 12 V supply); avalanche conduction occurs here when V > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock testing. |
| Glass passivated junction | Ensures stable VBR tolerance, low leakage (<1 µA), and long-term stability under thermal stress and humidity. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking; compatible with high-volume SMT assembly. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage overshoot during surge events, reducing risk of latch-up or gate oxide damage in protected MOSFETs. |
| 1000 W peak pulse power (10/1000 µs) | Meets IEC 61000-4-5 surge immunity requirements for industrial and automotive power inputs. |
Applications
| Automotive Power Input Protection | Industrial DC Power Rail Clamp |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between battery rail and DC-DC converter input. Use Value: Limits transient voltage to ≤48.4 V during 1000 W surges, preventing damage to upstream regulators and microcontrollers. |
Use Scenario: Safeguarding PLC I/O module power supplies from inductive switching transients. IC Role / Device Role / Timing Role: Primary surge suppression device on 24 V DC input bus prior to filtering and regulation. Use Value: Absorbs 10/1000 µs surges up to 20.7 A while maintaining <1 µA leakage at 30 V, ensuring system uptime. |
| Automotive Sensor Signal Line Protection | Consumer Power Adapter Output Clamp |
|
Use Scenario: Shielding LIN bus or analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge. IC Role / Device Role / Timing Role: Low-capacitance unidirectional clamp on signal line referenced to local ground. Use Value: Responds in <1 ns to ±8 kV ESD (IEC 61000-4-2), clamping to 48.4 V without distorting low-speed analog signals. |
Use Scenario: Adding secondary overvoltage protection to USB-C PD adapter 5–20 V output rails. IC Role / Device Role / Timing Role: Final-stage TVS on regulated output to catch regulator failure or feedback loop faults. Use Value: Clamps faulted output to ≤48.4 V before connected devices (e.g., smartphones, laptops) experience overvoltage damage. |
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-E3/5B | Same DO-214AA package, identical VWM (30 V), VBR (33.3–36.8 V), and VC (48.4 V), but not AEC-Q101 qualified. | Approved for commercial/industrial use only; excluded from automotive production BOMs requiring AEC-Q101 compliance. | Select SMBJ30A-E3/5B only if AEC-Q101 is not required and cost optimization is prioritized. |
| 1.5SMC33A | DO-214AB (SMC) package, larger footprint (7.11 mm × 6.22 mm), same VWM/VBR/VC specs, but RθJA = 25 °C/W (lower thermal resistance). | Better thermal performance allows higher sustained surge duty cycles; requires PCB layout change due to larger pad area. | Choose 1.5SMC33A when thermal derating or repeated surge exposure exceeds SMB10J30HE3/5B's 72 °C/W limit. |
Compared with SMBJ30A-E3/5B and 1.5SMC33A, SMB10J30HE3/5B uniquely combines AEC-Q101 qualification, SMB footprint compactness, and 1000 W surge rating-making it the preferred choice for space-constrained automotive modules where qualification and reliability are mandatory.
Availability
SMB10J30HE3/5B is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, and consumer power adapter designs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMB10J30HE3/5B 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 validation.
The SMB10J series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-power-density, AEC-Q101-compliant transient suppression in harsh automotive and industrial environments.
FAQ
What is the clamping voltage of SMB10J30HE3/5B at its rated peak pulse current?
The SMB10J30HE3/5B has a maximum clamping voltage (VC) of 48.4 V at 20.7 A peak pulse current (IPPM) under a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events. The SMB10J30HE3/5B maintains this clamping performance across its specified operating temperature range.
Is SMB10J30HE3/5B suitable for automotive applications?
Yes, SMB10J30HE3/5B is AEC-Q101 qualified and explicitly rated for automotive use, including engine control units, body electronics, and infotainment power supplies. Its construction-glass-passivated junction, MSL Level 1 rating, and matte tin plating-meets automotive assembly and reliability requirements. The SMB10J30HE3/5B data sheet confirms qualification per AEC-Q101 test conditions.
What is the difference between SMB10J30HE3/5B and SMB10J30A-E3/5B?
The SMB10J30HE3/5B carries the "HE3" suffix indicating AEC-Q101 qualification and JESD 201 Class 2 whisker resistance, whereas SMB10J30A-E3/5B ("E3") is commercial-grade only. Both share identical electrical specs (VWM = 30 V, VC = 48.4 V) and DO-214AA packaging, but SMB10J30HE3/5B is approved for automotive production, while SMB10J30A-E3/5B is not.
What PCB pad layout is recommended for SMB10J30HE3/5B to achieve rated power dissipation?
Vishay specifies a minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad area per terminal for SMB10J30HE3/5B to achieve its rated 1000 W peak pulse power and thermal resistance of 72 °C/W. Smaller pads cause thermal derating and reduced surge capability. The SMB10J30HE3/5B datasheet Figure 2 provides derating curves based on pad size and ambient temperature.
Does SMB10J30HE3/5B have bidirectional capability?
No, SMB10J30HE3/5B is a unidirectional TVS diode, as confirmed by its part number suffix "A" (not "CA") and the "Uni-directional" designation in the Vishay 88422 datasheet. It conducts only in reverse breakdown mode and must be oriented with the cathode band toward the protected line. For bidirectional protection, SMB8J30CA or equivalent would be required.
SMB10J30HE3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- 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):
- 18.7A
- 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)
SMB10J30HE3/5B FAQ
1.How can I place an order for SMB10J30HE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J30HE3/5B 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 SMB10J30HE3/5B reliable?
The price and inventory of SMB10J30HE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J30HE3/5B is usually 5 days.
3.What payment methods are accepted for SMB10J30HE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J30HE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J30HE3/5B?
SMB10J30HE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J30HE3/5B 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 SMB10J30HE3/5B?
For technical support, including SMB10J30HE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J30HE3/5B requirements.
6.How does Aetrix verify that SMB10J30HE3/5B is sourced from the original manufacturer or authorized distributors?
All SMB10J30HE3/5B 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 SMB10J30HE3/5B meets industry standards.
7.What is the process for return or replacement of SMB10J30HE3/5B?
All SMB10J30HE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J30HE3/5B, 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 SMB10J30HE3/5B part is unused and in its original packaging.
Return procedure for SMB10J30HE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J30HE3/5B Tags
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