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Vishay General Semiconductor - Diodes Division SMB10J30AHM3_B/I
- Part No.:
- SMB10J30AHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J30AHM3_B/I.pdf
- Description:
- 1KW,30V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,876
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Product details
Overview
SMB10J30AHM3_B/I 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) 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 - deployed in automotive ECUs, industrial sensor interfaces, and power supply input stages.
For engineers reviewing the SMB10J30AHM3_B/I datasheet, SMB10J30AHM3_B/I pinout, SMB10J30AHM3_B/I application, or SMB10J30AHM3_B/I equivalent, this device is selected for robust overvoltage protection where AEC-Q101 qualification, low clamping ratio (<1.6×VWM), and MSL Level 1 reflow compatibility are mandatory in harsh-environment designs.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents <1 µA leakage at 30 V; when exposed to transients exceeding its breakdown threshold, it avalanches rapidly (response time <1 ns) to clamp the line at ≤48.4 V while diverting up to 20.7 A of 10/1000 µs surge current. Its glass-passivated junction ensures stable parametric performance across temperature (-55 °C to +150 °C).
Designed for surface-mount assembly on 5.0 mm × 5.0 mm copper pads per terminal, the SMB10J30AHM3_B/I delivers thermal resistance of 72 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), enabling reliable operation in compact, thermally constrained layouts without forced cooling - critical for space-limited automotive and industrial modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - maximum continuous reverse operating voltage before significant leakage; defines safe DC rail margin for 24 V systems. |
| VBR (min/max) | 33.3 V / 36.8 V at 1 mA - tight breakdown window ensures predictable turn-on timing and minimal variation across production lots. |
| VC @ IPPM | 48.4 V at 20.7 A - clamping voltage limits downstream IC stress during 1000 W surge events; clamping ratio = 1.61×VWM. |
| PPPM | 1000 W (10/1000 µs) - sustains high-energy transients common in automotive load-dump and inductive switching scenarios. |
| ID @ VWM | ≤1.0 µA - ultra-low leakage preserves battery life and avoids false triggering in always-on circuits. |
| TJ max. | +150 °C - supports under-hood automotive placement and extended industrial temperature operation without derating. |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including HTOL, TC, UHAST, and ESD per JESD47 requirements. |
| Package | SMB (DO-214AA) - standardized footprint compatible with automated pick-and-place; RoHS-compliant, halogen-free, matte tin leads. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, cathode-indicated by black band on one end. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); recommended pad layout: 5.59 mm × 2.18 mm minimum per terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Current entry point during forward conduction; connected to protected circuit ground or low-side return path. | Enables bidirectional surge handling only when paired with complementary devices; not used for clamping in unidirectional configuration. |
| Cathode (banded end) | Clamping node - connected to protected line (e.g., 24 V rail or CAN_H) to shunt surges to ground. | Defines polarity-sensitive placement; reversal causes catastrophic failure under reverse bias due to lack of reverse blocking capability. |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMB package | Enables integration into height-constrained PCBs (max 2.20 mm) without compromising surge rating - ideal for stacked automotive modules. |
| Glass-passivated junction | Ensures long-term parameter stability and reduced parameter drift under thermal cycling and humidity exposure per AEC-Q101. |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS applications requiring zero field failures over 15-year service life. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without moisture-induced popcorn failure - eliminates pre-bake requirement in SMT lines. |
| Halogen-free & RoHS-compliant | Meets EU ELV Directive and OEM sustainability mandates; matte tin plating ensures solderability per J-STD-002 and whisker resistance Class 2. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 24 V supply inputs in engine control units (ECUs) against ISO 7637-2 Pulse 5a (load dump) and Pulse 1/2b (inductive switching). IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed between VIN and GND, activated within <1 ns to clamp voltage spikes above 33.3 V. Use Value: Limits peak rail voltage to ≤48.4 V during 1000 W surges, preventing damage to downstream PMICs, microcontrollers, and gate drivers. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loop) of pressure/temperature sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Unidirectional clamping element installed at sensor connector interface to absorb ESD and fast transients from cable coupling. Use Value: Maintains signal integrity with <1 µA leakage at 30 V and clamps EFT bursts to ≤48.4 V, avoiding ADC saturation or op-amp latch-up. |
| DC-DC Converter Input Stage | Telecom Power Interface |
|
Use Scenario: Input surge suppression for 24 V–48 V isolated DC-DC converters in industrial motor drives and renewable energy inverters. IC Role / Device Role / Timing Role: Primary overvoltage clamp ahead of input filter capacitors and active rectification stage. Use Value: Absorbs repetitive 10/1000 µs surges up to 20.7 A without degradation, extending converter lifetime and reducing need for oversized bulk capacitance. |
Use Scenario: Protection of -48 V telecom power distribution boards against lightning-induced surges and hot-swap transients. IC Role / Device Role / Timing Role: Unidirectional TVS mounted directly at board edge connectors to shunt incoming surges to chassis ground. Use Value: Withstands 1000 W pulses while maintaining ≤48.4 V clamping - compliant with GR-1089-CORE Level 3 surge immunity requirements. |
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-E3/52 | Same VWM (30 V), VBR (33.3–36.8 V), VC (48.4 V), but commercial-grade (non-AEC-Q101), RoHS-compliant only (not halogen-free). | Lacks automotive qualification; suitable for industrial/commercial power supplies where AEC-Q101 is not mandated. | Select SMBJ30A-E3/52 for cost-sensitive non-automotive designs needing identical electrical specs but no automotive reliability validation. |
| SMCJ30A-QH | Higher PPPM (1500 W), same VWM/VBR/VC, but larger SMC (DO-214AB) package (7.11 mm × 6.22 mm) and AEC-Q101 qualified. | Requires PCB layout change; used where >1000 W surge margin is required (e.g., heavy-duty vehicle alternator inputs). | Choose SMCJ30A-QH only when system-level surge testing exceeds 1000 W - otherwise SMB10J30AHM3_B/I offers optimal size/power density. |
Compared with SMBJ30A-E3/52, SMB10J30AHM3_B/I adds AEC-Q101 qualification and halogen-free construction for automotive use; compared with SMCJ30A-QH, it trades 500 W peak power for 40 % smaller footprint and identical clamping performance - making it the preferred choice for space-constrained AEC-Q101 designs.
Availability
SMB10J30AHM3_B/I is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface development, and telecom power board prototyping requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMB10J30AHM3_B/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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The SMB10J series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-power-density transient suppression in AEC-Q101-compliant automotive and ruggedized industrial environments.
FAQ
What is the clamping voltage of SMB10J30AHM3_B/I at its rated peak pulse current?
The SMB10J30AHM3_B/I has a maximum clamping voltage (VC) of 48.4 V when subjected to its rated peak pulse current (IPPM) of 20.7 A using the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in Vishay's datasheet revision 09-Jan-2024, Document Number 88422. The clamping behavior ensures downstream components see limited overvoltage stress during surge events.
Is SMB10J30AHM3_B/I suitable for automotive applications?
Yes, SMB10J30AHM3_B/I is AEC-Q101 qualified and explicitly designated for automotive use via its HM3 suffix (halogen-free, RoHS-compliant, AEC-Q101). It meets stress test requirements including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing - making it appropriate for engine control, body electronics, and ADAS subsystems where reliability is critical.
What does the "_B/I" suffix mean in SMB10J30AHM3_B/I?
The "_B/I" suffix in SMB10J30AHM3_B/I indicates packaging configuration: "B" denotes the base revision code (per Vishay's revision tracking), and "I" specifies 13-inch diameter plastic tape-and-reel delivery with 3200 units per reel. This matches the ordering information in the datasheet, where "I" corresponds to the preferred package code for high-volume automated assembly.
How does SMB10J30AHM3_B/I differ from SMBJ30A?
SMB10J30AHM3_B/I and SMBJ30A share identical electrical parameters (VWM = 30 V, VBR = 33.3–36.8 V, VC = 48.4 V), but SMB10J30AHM3_B/I carries AEC-Q101 qualification, halogen-free construction, and MSL Level 1 reflow rating - whereas SMBJ30A is commercial-grade (E3 suffix) without automotive validation. Both use the same SMB package, but SMB10J30AHM3_B/I is intended for mission-critical automotive deployment.
What is the maximum operating junction temperature for SMB10J30AHM3_B/I?
The SMB10J30AHM3_B/I has a maximum operating junction temperature (TJ max.) of +150 °C, as specified in the Absolute Maximum Ratings table of Vishay's datasheet (Document Number 88422). This enables reliable operation in under-hood automotive environments and high-ambient industrial settings without thermal derating below its full 1000 W surge rating at TA = 25 °C.
SMB10J30AHM3_B/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:
- 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):
- 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_B/I FAQ
1.How can I place an order for SMB10J30AHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J30AHM3_B/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_B/I reliable?
The price and inventory of SMB10J30AHM3_B/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_B/I is usually 5 days.
3.What payment methods are accepted for SMB10J30AHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J30AHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J30AHM3_B/I?
SMB10J30AHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J30AHM3_B/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_B/I?
For technical support, including SMB10J30AHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J30AHM3_B/I requirements.
6.How does Aetrix verify that SMB10J30AHM3_B/I is sourced from the original manufacturer or authorized distributors?
All SMB10J30AHM3_B/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_B/I meets industry standards.
7.What is the process for return or replacement of SMB10J30AHM3_B/I?
All SMB10J30AHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J30AHM3_B/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_B/I part is unused and in its original packaging.
Return procedure for SMB10J30AHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J30AHM3_B/I Tags
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