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Vishay General Semiconductor - Diodes Division SMB10J30AHM3_A/H
- Part No.:
- SMB10J30AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J30AHM3_A/H.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,500
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Product details
Overview
SMB10J30AHM3_A/H 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 and industrial sensor interfaces.
For engineers reviewing the SMB10J30AHM3_A/H datasheet, SMB10J30AHM3_A/H pinout, SMB10J30AHM3_A/H application, or SMB10J30AHM3_A/H equivalent, key selection criteria include AEC-Q101 qualification, halogen-free RoHS compliance (HM3 suffix), low incremental surge resistance, and verified clamping performance under repetitive transients per IEC 61000-4-5.
Technical Context
This TVS diode operates as a shunt-clamping device, responding to overvoltage events by avalanche conduction when reverse voltage exceeds VBR. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM = 30 V), while the SMB package enables automated placement and meets MSL level 1 (260 °C reflow peak).
The device is rated for -55 °C to +150 °C operating junction temperature, with thermal resistance RθJA = 72 °C/W and RθJL = 20 °C/W. It sustains non-repetitive 100 A forward surge current (IFSM, 8.3 ms half-sine) and complies with ANSI/IEEE C62.35 surge definitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 33.3 V / 36.8 V at 1.0 mA test current - defines reliable avalanche onset window |
| VC @ IPPM | 48.4 V at 20.7 A - clamping voltage limiting downstream IC stress during 10/1000 µs surge |
| PPPM | 1000 W - peak transient power handling capability per standard 10/1000 µs waveform |
| IFSM | 100 A - surge current tolerance for 8.3 ms half-sine, critical for load-dump immunity |
| TJ max | +150 °C - enables use in under-hood automotive environments without derating |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling and HTRB |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, cathode-indicated by band; dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); terminals are matte tin-plated, solderable per J-STD-002/JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / surge return path | Connected to protected line (e.g., 30 V rail); conducts during positive transients when used in reverse-biased configuration |
| Cathode | Avalanche conduction node / clamping reference | Connected to ground or lower-potential reference; establishes VBR and VC thresholds via controlled avalanche breakdown |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements (HTOL, TC, UHAST, etc.) |
| Halogen-free & RoHS-compliant (HM3) | Meets environmental regulations without compromising surge robustness or thermal performance |
| Low incremental surge resistance | Enables tighter clamping (VC/VBR ratio = 1.45) and reduced let-through energy to protected ICs |
| MSL Level 1 rating | Supports lead-free reflow up to 260 °C peak without popcorn or delamination risk |
| Glass-passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V supply inputs in engine control units against ISO 7637-2 load dump and jump-start surges. IC Role / Device Role: Shunt-clamping TVS placed between power rail and chassis ground to clamp transients below MOSFET and MCU absolute maximum ratings. Use Value: Withstands 100 A IFSM and delivers 48.4 V clamping at 20.7 A, preventing latch-up or gate oxide damage in downstream power management ICs. | Use Scenario: Safeguarding analog front-end inputs of pressure/temperature sensors in factory automation PLC modules exposed to relay coil flyback. IC Role / Device Role: Bidirectional-capable unidirectional TVS (cathode grounded) suppressing both positive and negative transients on differential signal pairs. Use Value: Low 1.0 µA leakage at 30 V VWM preserves sensor accuracy; fast response time limits transient duration seen by precision ADCs. |
| Telecom DC Power Input Protection | Consumer USB-C Power Delivery Line Protection |
Use Scenario: Securing 48 V PoE-powered equipment inputs against lightning-induced surges per IEC 61000-4-5 Level 4. IC Role / Device Role: Primary-level TVS on input bulk capacitor node, coordinated with upstream GDT or MOV for staged clamping. Use Value: 1000 W PPPM rating supports coordination with secondary protection; SMB footprint allows dense layout near connector entry point. | Use Scenario: Protecting VBUS line in USB-C PD sink devices during hot-plug events and cable ESD coupling. IC Role / Device Role: Fast-acting unidirectional clamp between VBUS and ground, activated before internal buck converter overvoltage shutdown. Use Value: 30 V VWM aligns with USB PD 3.0 20 V max + margin; 48.4 V VC ensures safe operation within 50 V absolute max rating of common PD controllers. |
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/H | Same VWM/VBR/VC specs but E3 (non-halogen-free) RoHS suffix; no AEC-Q101 qualification | Acceptable for commercial/industrial use where automotive qualification is not required | Select when halogen-free requirement is waived and cost sensitivity outweighs AEC-Q101 need |
| SMAJ30A-HM3 | Lower PPPM (400 W), smaller SMA package (DO-214AC), same VWM/VBR range | Limited to lower-energy transients; unsuitable for load dump or high-current surge scenarios | Choose only for space-constrained consumer designs with <400 W surge exposure |
Compared with SMBJ30AHE3_A/H and SMAJ30A-HM3, SMB10J30AHM3_A/H uniquely combines AEC-Q101 qualification, halogen-free compliance, and 1000 W surge capacity in SMB form factor - making it the only option for automotive-grade 30 V rail protection requiring full regulatory alignment and high-energy robustness.
Availability
SMB10J30AHM3_A/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor nodes, and telecom power supply designs requiring stable component supply with guaranteed long-term lifecycle support.
Supply support for SMB10J30AHM3_A/H 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, and protection devices with emphasis on reliability, power density, and automotive qualification.
The SMB10J series belongs to Vishay's TRANSZORB® TVS platform, engineered specifically for high-power-density transient suppression in harsh environments - targeting automotive, industrial, and infrastructure applications demanding AEC-Q101 validation and repeatable clamping performance.
FAQ
What is the clamping voltage of SMB10J30AHM3_A/H at its rated peak pulse current?
The SMB10J30AHM3_A/H has a maximum clamping voltage (VC) of 48.4 V at 20.7 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures protected circuitry remains below critical overvoltage thresholds during surge events. The clamping performance is guaranteed across the full operating temperature range (-55 °C to +150 °C).
Is SMB10J30AHM3_A/H qualified for automotive applications?
Yes, SMB10J30AHM3_A/H is AEC-Q101 qualified, as confirmed by Vishay's official documentation (Document Number: 88422, Revision: 09-Jan-2024). The HM3 suffix denotes halogen-free, RoHS-compliant construction with full automotive stress testing - including HTOL, temperature cycling, and unbiased HAST - making SMB10J30AHM3_A/H suitable for under-hood and body-control module deployments.
What does the "HM3" suffix mean in SMB10J30AHM3_A/H?
The "HM3" suffix in SMB10J30AHM3_A/H indicates halogen-free, RoHS-compliant construction meeting JEDEC JESD201 Class 2 whisker resistance requirements. It also confirms compliance with Vishay's material categorization standard (www.vishay.com/doc?99912) and qualifies the device for automotive use when paired with HE3/HM3 revision coding (e.g., _A/H). This distinguishes SMB10J30AHM3_A/H from commercial-grade E3/M3 variants.
Can SMB10J30AHM3_A/H be used in bidirectional configurations?
No - SMB10J30AHM3_A/H is a unidirectional TVS diode, intended for use with cathode grounded. For bidirectional protection, Vishay offers the SMB8J30CA family (e.g., SMB8J30CAHM3_A/H), which shares the same VWM/VBR range but features symmetrical breakdown in both polarities. Using SMB10J30AHM3_A/H in bidirectional mode would result in forward conduction during negative transients, risking failure.
What is the thermal resistance of SMB10J30AHM3_A/H, and how does it affect PCB layout?
SMB10J30AHM3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 72 °C/W and junction-to-lead (RθJL) of 20 °C/W. To maintain safe operation at full 1000 W PPPM, the PCB must provide adequate copper area: Vishay specifies minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. Insufficient copper will cause excessive junction temperature rise and premature thermal runaway during repeated surges.
SMB10J30AHM3_A/H 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/H FAQ
1.How can I place an order for SMB10J30AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J30AHM3_A/H 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/H reliable?
The price and inventory of SMB10J30AHM3_A/H 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/H is usually 5 days.
3.What payment methods are accepted for SMB10J30AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J30AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J30AHM3_A/H?
SMB10J30AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J30AHM3_A/H 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/H?
For technical support, including SMB10J30AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J30AHM3_A/H requirements.
6.How does Aetrix verify that SMB10J30AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMB10J30AHM3_A/H 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/H meets industry standards.
7.What is the process for return or replacement of SMB10J30AHM3_A/H?
All SMB10J30AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J30AHM3_A/H, 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/H part is unused and in its original packaging.
Return procedure for SMB10J30AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J30AHM3_A/H Tags
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