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Vishay General Semiconductor - Diodes Division SMB10J30AHM3/I
- Part No.:
- SMB10J30AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J30AHM3/I.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,529
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Product details
Overview
SMB10J30AHM3/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 1000 W peak pulse power (10/1000 μs), 30 V stand-off voltage (VWM), and 48.4 V clamping voltage at 20.7 A peak pulse current. It is AEC-Q101 qualified and used to protect automotive sensor signal lines, power rails, and MOSFET gate drivers against inductive switching transients.
For engineers reviewing the SMB10J30AHM3/I datasheet, SMB10J30AHM3/I pinout, SMB10J30AHM3/I application, or SMB10J30AHM3/I equivalent, this device delivers verified clamping performance, halogen-free RoHS compliance, MSL Level 1 moisture sensitivity, and automotive-grade reliability under -55 °C to +150 °C operating junction temperature.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds its 33.3–36.8 V breakdown range (tested at 1 mA), it rapidly transitions from high-impedance to low-impedance state to divert surge current away from downstream circuitry. Its glass-passivated junction ensures stable leakage (<1.0 μA at 30 V) and repeatable clamping behavior across temperature.
The SMB10J30AHM3/I is optimized for fast response (sub-nanosecond), low incremental surge resistance, and robust thermal performance (RθJA = 72 °C/W). Its unidirectional polarity-marked by cathode band-and 100 A IFSM rating support high-reliability protection of DC power inputs and unidirectional data paths in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 μs) | 1000 W - sustains single high-energy surges without failure in automotive load-dump or ISO 7637-2 pulse 5a scenarios |
| Stand-off Voltage (VWM) | 30 V - maximum continuous reverse voltage before significant leakage; sets upper limit for protected circuit operating voltage |
| Breakdown Voltage (VBR) | 33.3–36.8 V at 1 mA - defines onset of avalanche conduction; ensures reliable triggering above normal operating margin |
| Clamping Voltage (VC) | 48.4 V at 20.7 A IPPM - maximum voltage seen by protected IC during full-rated surge; critical for MOSFET VDS and IC absolute max ratings |
| Peak Pulse Current (IPPM) | 20.7 A (10/1000 μs) - quantifies surge-handling capacity; directly correlates with PCB trace sizing and fuse coordination |
| Junction Temperature Range | -55 °C to +150 °C - enables operation in engine bay, under-hood, and industrial control enclosures without derating |
| AEC-Q101 Qualified | Yes - validated for automotive electronic modules per stress test requirements including HTOL, TCT, and ESD |
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; meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge current sink node | Connected to protected line; conducts avalanche current to ground during overvoltage events |
| Anode | Reference / return path | Typically tied to system ground or low-impedance return plane; completes shunt path for transient energy dissipation |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free, RoHS-compliant construction | Meets automotive environmental standards (HM3 suffix); eliminates brominated flame retardants without compromising thermal stability |
| AEC-Q101 qualification | Validated for automotive electronics use with extended temperature cycling, high-temperature operating life, and ESD robustness |
| Glass-passivated junction | Ensures consistent VBR tolerance, low leakage drift over time, and immunity to humidity-induced parameter shift |
| Low profile SMB package | Enables automated placement on dense PCBs; 0.220" × 0.130" footprint fits tight spacing constraints in ADAS and body control modules |
| MSL Level 1 rating | Allows unlimited floor life and reflow at 260 °C peak without baking; simplifies SMT manufacturing flow |
Applications
| Automotive Sensor Protection | DC Power Rail Clamping |
|---|---|
|
Use Scenario: Protecting LIN/CAN transceiver input pins and analog sensor outputs (e.g., pressure, temperature) from load dump and battery reversal transients in vehicle ECUs. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed between signal line and ground, triggered within nanoseconds upon overvoltage detection. Use Value: Limits voltage to ≤48.4 V during 20.7 A surges, preventing latch-up or permanent damage to 3.3 V/5 V interface ICs while maintaining signal integrity. |
Use Scenario: Safeguarding 24 V supply rails feeding microcontrollers, motor drivers, and communication ICs in commercial vehicle telematics units. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main power input, coordinated with upstream fuses and downstream LDOs to define fault containment boundary. Use Value: Absorbs 1000 W pulses without degradation, enabling compliance with ISO 7637-2 Pulse 5a (load dump) and reducing need for oversized bulk capacitance. |
| MOSFET Gate Driver Protection | Industrial I/O Module Protection |
|
Use Scenario: Shielding high-side N-channel MOSFET gate drive circuits from inductive kickback during solenoid or relay coil de-energization. IC Role / Device Role / Timing Role: Unidirectional TVS connected anode-to-ground, cathode-to-gate, clamping gate-source voltage during turn-off transients. Use Value: Prevents VGS overstress beyond ±20 V rating with 48.4 V clamping, preserving MOSFET reliability and avoiding unintended turn-on due to ringing. |
Use Scenario: Hardening digital input/output channels in PLC backplanes and factory automation controllers exposed to field wiring surges and ESD. IC Role / Device Role / Timing Role: Point-of-entry protection on each I/O terminal block, mounted adjacent to connector to minimize inductance in surge path. Use Value: Withstands repeated 20.7 A surges at 30 V working voltage, extending field service life and reducing unplanned downtime in harsh electromagnetic environments. |
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_A/H | Same VWM (30 V), VBR (33.3–36.8 V), and VC (48.4 V), but rated for 600 W PPPM (10/1000 μs) and not AEC-Q101 qualified | Commercial-grade only; unsuitable for automotive safety-critical modules requiring AEC-Q101 validation | Select when cost-sensitive industrial designs require basic 30 V clamping without automotive qualification |
| SMCJ30A-Q | Higher PPPM (1500 W), same VWM/VC, but in larger SMC (DO-214AB) package; AEC-Q101 qualified | Requires larger PCB area and higher thermal mass; better suited for higher-energy surges where space permits | Choose when system-level surge testing exceeds 1000 W or when board layout allows SMC footprint for enhanced margin |
Compared with SMBJ30AHE3_A/H and SMCJ30A-Q, the SMB10J30AHM3/I uniquely balances AEC-Q101 compliance, 1000 W surge capability, and compact SMB footprint-making it optimal for space-constrained automotive modules needing certified reliability without package enlargement.
Availability
SMB10J30AHM3/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, 24 V power rail protection, and industrial I/O hardening requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for SMB10J30AHM3/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, rectifiers, and protection devices for automotive, industrial, and computing markets.
The SMB10J series was developed specifically for AEC-Q101-compliant transient suppression in next-generation automotive electronics, emphasizing low-profile packaging, halogen-free materials, and robust surge handling in constrained spaces.
FAQ
What is the clamping voltage of SMB10J30AHM3/I at its rated peak pulse current?
The SMB10J30AHM3/I has a maximum clamping voltage (VC) of 48.4 V at 20.7 A peak pulse current (IPPM) under 10/1000 μs waveform conditions. This value is measured and guaranteed per Vishay's datasheet Document Number 88422, ensuring predictable voltage limiting during surge events. The SMB10J30AHM3/I maintains this clamping performance across its full operating temperature range.
Is SMB10J30AHM3/I suitable for automotive applications?
Yes, SMB10J30AHM3/I is AEC-Q101 qualified and explicitly designed for automotive use, with halogen-free (HM3) and RoHS-compliant construction. Its -55 °C to +150 °C junction temperature range, MSL Level 1 rating, and validation against HTOL, TCT, and ESD stresses make it appropriate for engine control units, ADAS sensors, and body electronics. The SMB10J30AHM3/I meets ISO 7637-2 Pulse 5a requirements when properly mounted.
How does the HM3 suffix affect SMB10J30AHM3/I's compliance status?
"HM3" denotes halogen-free, RoHS-compliant, and AEC-Q101-qualified construction per Vishay's ordering nomenclature. Unlike E3 (RoHS commercial) or HE3 (RoHS automotive), HM3 adds halogen-free material certification (per IEC 61249-2-21) while retaining full AEC-Q101 validation. The SMB10J30AHM3/I thus satisfies stringent automotive environmental and reliability mandates without trade-offs in electrical performance.
What is the thermal resistance of SMB10J30AHM3/I, and how does it impact layout?
The SMB10J30AHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 72 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value guides PCB thermal design: to maintain TJ ≤ 150 °C during repetitive surges, designers must ensure adequate copper area and avoid excessive trace length. The SMB10J30AHM3/I's RθJL of 20 °C/W further supports heat transfer to leads in thermally optimized layouts.
Can SMB10J30AHM3/I replace bidirectional TVS diodes in circuit designs?
No-SMB10J30AHM3/I is unidirectional and features a cathode band; it conducts only in reverse bias and blocks forward current. Bidirectional variants (e.g., SMB8J30CA) are required for AC-coupled or symmetrical signal lines like CAN bus. Using SMB10J30AHM3/I in place of a bidirectional device would leave positive-going transients unprotected. Always verify polarity alignment before substituting the SMB10J30AHM3/I in existing designs.
SMB10J30AHM3/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:
- 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:
- 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/I FAQ
1.How can I place an order for SMB10J30AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J30AHM3/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/I reliable?
The price and inventory of SMB10J30AHM3/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/I is usually 5 days.
3.What payment methods are accepted for SMB10J30AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J30AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J30AHM3/I?
SMB10J30AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J30AHM3/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/I?
For technical support, including SMB10J30AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J30AHM3/I requirements.
6.How does Aetrix verify that SMB10J30AHM3/I is sourced from the original manufacturer or authorized distributors?
All SMB10J30AHM3/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/I meets industry standards.
7.What is the process for return or replacement of SMB10J30AHM3/I?
All SMB10J30AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J30AHM3/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/I part is unused and in its original packaging.
Return procedure for SMB10J30AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J30AHM3/I Tags
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Diodes Incorporated
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