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Vishay General Semiconductor - Diodes Division SMB10J30AHM3_A/I
- Part No.:
- SMB10J30AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J30AHM3_A/I.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,674
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Product details
Overview
SMB10J30AHM3_A/I from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection with 30 V standoff voltage (VWM), 33.3–36.8 V breakdown voltage (VBR), and 1000 W peak pulse power (10/1000 μs). It clamps transients to ≤48.4 V at 20.7 A peak surge current and is AEC-Q101 qualified for automotive electronics.
For engineers reviewing the SMB10J30AHM3_A/I datasheet, SMB10J30AHM3_A/I pinout, SMB10J30AHM3_A/I application, or SMB10J30AHM3_A/I equivalent, this device is selected for robust overvoltage protection on power rails and signal lines where fast response (<1 ns), low clamping ratio (VC/VBR ≈ 1.35), and halogen-free RoHS compliance are required in harsh environments.
Technical Context
This TVS diode uses a glass-passivated silicon junction optimized for low incremental surge resistance and stable clamping under repetitive 10/1000 μs surges. Its unidirectional polarity enables DC rail protection with cathode-anode orientation, supporting reverse-biased operation up to 30 V before breakdown.
Thermal performance is defined by RθJL = 20 °C/W (junction-to-lead) and RθJA = 72 °C/W (junction-to-ambient on 5.0 mm × 5.0 mm copper pads), enabling reliable operation up to TJ = +150 °C. The device meets MSL Level 1 per J-STD-020 with 260 °C reflow peak temperature tolerance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - Maximum continuous reverse operating voltage before significant leakage; sets upper limit for protected circuit DC bias. |
| VBR (min/max) | 33.3 V / 36.8 V at IT = 1.0 mA - Confirmed breakdown range ensures predictable turn-on during transients without premature conduction. |
| VC @ IPPM | 48.4 V at 20.7 A - Clamping voltage under full-rated 1000 W surge; determines maximum stress imposed on downstream ICs. |
| PPPM | 1000 W (10/1000 μs) - Peak surge energy handling capacity; defines protection level against IEC 61000-4-5 Level 4 surges. |
| ID @ VWM | 1.0 μA - Reverse leakage at rated standoff; negligible power loss and no thermal drift in low-power sensor or MCU supply rails. |
| TJ max. | +150 °C - Maximum junction temperature rating; supports under-hood automotive placement and industrial ambient conditions. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line (e.g., 30 V rail); conducts surge current to ground when voltage exceeds VBR. |
| Anode | Reference/ground return path | Typically tied to system ground or low-impedance return plane; completes clamping path during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free & RoHS-compliant | HM3 suffix confirms halogen-free molding compound and lead finish - satisfies automotive OEM material restrictions (e.g., GMW3172, Ford WSS-M99P9999-A1). |
| AEC-Q101 qualification | Validated for automotive use including HTOL, temperature cycling, and mechanical shock - eliminates need for additional qualification testing in Tier-1 designs. |
| Low clamping ratio (VC/VBR) | ≈1.35 - Minimizes overvoltage overshoot during clamping, reducing risk of latch-up or gate oxide damage in protected MOSFETs or MCUs. |
| Fast response time | <1 ns - Reacts before most microsecond-scale transients fully develop, preventing propagation into sensitive analog or digital circuitry. |
| MSL Level 1 rating | 260 °C peak reflow compatibility - Enables standard SMT assembly without moisture sensitivity concerns or baking requirements. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V/24 V battery-connected ECUs (e.g., body control modules) from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp positive-going transients above 30 V. Use Value: Withstands 1000 W surges while limiting clamped voltage to 48.4 V - safely within 60 V absolute max rating of common automotive PMICs and CAN transceivers. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop drivers) from ESD and inductive switching noise in factory automation systems. IC Role / Device Role / Timing Role: TVS mounted directly at connector entry point to shunt fast transients before reaching precision DAC or op-amp stages. Use Value: 1.0 μA leakage at 30 V avoids loading error in high-impedance current-loop sensing; sub-ns response prevents signal corruption during 8 kV contact ESD events. |
| Automotive Lighting Driver Protection | DC-DC Converter Input Protection |
|
Use Scenario: Safeguarding LED driver ICs (e.g., constant-current buck controllers) from voltage spikes caused by relay coil de-energization in headlamp modules. IC Role / Device Role / Timing Role: Placed across input capacitor to absorb 1000 W inductive kickback pulses without thermal runaway. Use Value: 20.7 A peak surge current rating matches typical relay coil energy discharge profiles; AEC-Q101 qualification ensures long-term reliability under thermal cycling. |
Use Scenario: Guarding input stage of isolated DC-DC converters (e.g., 24 V to 5 V) in railway signaling equipment exposed to lightning-induced surges. IC Role / Device Role / Timing Role: First-line defense upstream of input filter and primary-side FET, absorbing bulk surge energy before it reaches isolation barrier. Use Value: 48.4 V clamping voltage provides ≥20 % margin below typical 60 V input-rated converter controllers, preventing overvoltage shutdown or failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30AHE3_A/I | Same VWM (30 V), VBR (33.3–36.8 V), and PPPM (1000 W), but E3 suffix indicates standard RoHS (not halogen-free); RθJA = 72 °C/W identical. | No AEC-Q101 qualification; suitable only for commercial/industrial use, not automotive. | Select SMBJ30AHE3_A/I if halogen-free content is not mandated and AEC-Q101 is unnecessary. |
| SMB10J30AHE3_B/I | Identical electrical specs and AEC-Q101 qualification, but HE3 suffix denotes RoHS-compliant (non-halogen-free) version; same SMB package and pinout. | Same automotive suitability, but may fail OEM halogen-free audits (e.g., VW TL 52366). | Choose SMB10J30AHE3_B/I only when halogen-free requirement is waived by end-customer specification. |
Compared with SMBJ30AHE3_A/I and SMB10J30AHE3_B/I, SMB10J30AHM3_A/I uniquely combines AEC-Q101 qualification with halogen-free construction - essential for Tier-1 automotive programs requiring both reliability validation and green material compliance.
Availability
SMB10J30AHM3_A/I is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, lighting driver safeguarding, and DC-DC converter input surge suppression requiring stable component supply across multi-year production cycles.
Supply support for SMB10J30AHM3_A/I 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 high-reliability, high-efficiency solutions.
The SMB10J series belongs to Vishay's TRANSZORB® TVS platform, engineered specifically for high-power-density, surface-mount transient suppression in automotive, industrial, and telecom infrastructure where space-constrained layouts demand robust 1000 W surge capability.
FAQ
What is the clamping voltage of SMB10J30AHM3_A/I at its rated peak pulse current?
The SMB10J30AHM3_A/I has a maximum clamping voltage (VC) of 48.4 V at its rated peak pulse current (IPPM) of 20.7 A under a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that protected downstream components experience no more than 48.4 V during full-rated surge events - critical for ensuring compatibility with 60 V-rated ICs and MOSFETs in automotive power systems.
Is SMB10J30AHM3_A/I suitable for automotive applications?
Yes, SMB10J30AHM3_A/I is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction - meeting stringent automotive reliability and material requirements. It is explicitly rated for operation from –55 °C to +150 °C and validated for temperature cycling, high-temperature reverse bias, and mechanical shock, making it appropriate for under-hood and chassis-mounted ECUs.
What does the "HM3" suffix mean in SMB10J30AHM3_A/I?
The "HM3" suffix in SMB10J30AHM3_A/I denotes halogen-free, RoHS-compliant construction per Vishay's material categorization (www.vishay.com/doc?99912), with matte tin-plated leads passing JESD 201 Class 2 whisker testing. Unlike E3 or HE3 variants, HM3 ensures zero brominated flame retardants and low chlorine content - required by major automotive OEMs including BMW, Daimler, and Toyota.
How does SMB10J30AHM3_A/I differ from SMBJ30AHE3_A/I?
SMB10J30AHM3_A/I and SMBJ30AHE3_A/I share identical electrical parameters (VWM = 30 V, VBR = 33.3–36.8 V, PPPM = 1000 W) and SMB package, but differ in compliance: SMB10J30AHM3_A/I is halogen-free and AEC-Q101 qualified, whereas SMBJ30AHE3_A/I is RoHS-compliant (E3) without halogen-free certification or automotive qualification - limiting its use to commercial/industrial applications.
What is the thermal resistance of SMB10J30AHM3_A/I, and how does it affect layout design?
SMB10J30AHM3_A/I has RθJL = 20 °C/W (junction-to-lead) and RθJA = 72 °C/W (junction-to-ambient on 5.0 mm × 5.0 mm copper pads). To maintain safe operation under repeated surges, PCB layout must provide minimum 5.0 mm × 5.0 mm copper pads per terminal - smaller pads increase thermal resistance and risk exceeding +150 °C junction temperature during high-duty-cycle transients.
SMB10J30AHM3_A/I 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:
- 48.4V
- Current - Peak Pulse (10/1000µs):
- 20.7A
- Power - Peak Pulse:
- 1000W (1kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB10J30AHM3_A/I FAQ
1.How can I place an order for SMB10J30AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J30AHM3_A/I 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 SMB10J30AHM3_A/I reliable?
The price and inventory of SMB10J30AHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J30AHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMB10J30AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J30AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J30AHM3_A/I?
SMB10J30AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J30AHM3_A/I 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 SMB10J30AHM3_A/I?
For technical support, including SMB10J30AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J30AHM3_A/I requirements.
6.How does Aetrix verify that SMB10J30AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMB10J30AHM3_A/I 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 SMB10J30AHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMB10J30AHM3_A/I?
All SMB10J30AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J30AHM3_A/I, 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 SMB10J30AHM3_A/I part is unused and in its original packaging.
Return procedure for SMB10J30AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J30AHM3_A/I Tags
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