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Vishay General Semiconductor - Diodes Division SMB10J33AHM3_A/I
- Part No.:
- SMB10J33AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J33AHM3_A/I.pdf
- Description:
- TVS DIODE 33VWM 53.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,686
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Product details
Overview
SMB10J33AHM3_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 1000 W peak pulse power (10/1000 µs), 33 V stand-off voltage (VWM), and 53.3 V clamping voltage (VC) at 18.8 A peak pulse current. It is AEC-Q101 qualified and used to protect automotive sensor signal lines, MOSFET gates, and IC power rails against inductive switching transients.
For engineers reviewing the SMB10J33AHM3_A/I datasheet, SMB10J33AHM3_A/I pinout, SMB10J33AHM3_A/I application, or SMB10J33AHM3_A/I equivalent, this page delivers verified electrical specs, automotive-grade qualification status, thermal resistance data, clamping performance under surge, and real-world protection use cases - all confirmed from Vishay's official 88422 document revision 09-Jan-2024.
Technical Context
This TVS diode operates as a unidirectional clamping device with a glass-passivated junction, enabling fast response (<1 ns) to ESD and lightning-induced transients. Its breakdown voltage (VBR) is specified at 36.7–40.6 V (min/max) with 1 mA test current, and it maintains low incremental surge resistance to sustain high peak pulse currents without thermal runaway.
The SMB10J33AHM3_A/I features halogen-free, RoHS-compliant construction with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102, and meets MSL Level 1 (260 °C peak reflow). Its thermal resistance is 72 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), supporting reliable operation up to +150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 33 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 36.7 V / 40.6 V - breakdown occurs within this range at 1 mA, defining turn-on threshold |
| VC @ IPPM | 53.3 V - clamped voltage seen by protected circuit during 18.8 A 10/1000 µs surge |
| PPPM | 1000 W - peak pulse power handling capability under standard 10/1000 µs waveform |
| IPPM | 18.8 A - maximum non-repetitive surge current the device safely clamps |
| RθJA | 72 °C/W - thermal resistance from junction to ambient on standard 5.0 mm × 5.0 mm copper pads |
| TJ max | +150 °C - maximum allowable junction temperature for continuous operation |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with cathode band marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); mounting pad layout per Vishay spec: 5.59 mm × 2.159 mm (length × width).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to protected circuit ground or low-side return path; conducts during forward surge events |
| Cathode (banded end) | Reverse-biased clamping terminal | Connected to protected line (e.g., 33 V rail); enters avalanche breakdown when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets automotive environmental compliance requirements and JESD201 Class 2 whisker resistance |
| Low profile SMB package | Enables automated placement and high-density PCB layouts while maintaining 1000 W surge rating |
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under repeated surge stress |
| MSL Level 1 rating | Supports lead-free reflow up to 260 °C peak without moisture-induced failure |
Applications
| Automotive Sensor Protection | Industrial Motor Drive Inputs |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between signal line and ground, absorbing transients before they reach sensitive input pins. Use Value: Limits voltage to ≤53.3 V during 18.8 A surges, preventing latch-up or gate oxide damage in downstream ASICs. | Use Scenario: Safeguarding microcontroller GPIOs and optocoupler inputs connected to relay coils or solenoid drivers. IC Role / Device Role / Timing Role: Fast-acting shunt protector across inductive loads, diverting energy away from logic-level control circuitry. Use Value: Clamps 1000 W surges within nanoseconds, eliminating need for external snubbers in compact motor control modules. |
| Power Supply Rail Protection | Telecom Line Interface |
Use Scenario: Guarding 3.3 V/5 V/33 V DC power rails in infotainment head units and body control modules against battery reverse polarity and jump-start spikes. IC Role / Device Role / Timing Role: Standoff-rated TVS placed in parallel with LDO or DC-DC converter output, conducting only during overvoltage events. Use Value: Maintains 33 V nominal operation while clamping to 53.3 V - sufficient margin above rail to avoid false triggering yet low enough to protect 60 V-rated FETs. | Use Scenario: Front-end surge suppression for Ethernet PHYs, RS-485 transceivers, and PoE-powered devices exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level TVS on differential pairs or supply lines, working in coordination with GDTs or secondary-stage MOVs. Use Value: Delivers 1000 W single-pulse capability with <1 ns response, meeting IEC 61000-4-5 Level 4 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 |
|---|---|---|---|
| SMBJ33AHE3_A/H | Same VWM/VC/PPPM, but uses E3 (non-halogen-free) termination and AEC-Q101 qualification with different reel packaging (H vs I) | Identical protection function; differs only in material compliance and tape/reel configuration | Select SMBJ33AHE3_A/H if halogen content is not restricted and 7" reel delivery is preferred |
| SMB10J33A-M3/5B | Same electrical specs, but M3 suffix indicates halogen-free RoHS compliance without AEC-Q101 qualification; packaged in 13" reel (3200 pcs) | Commercial-grade alternative suitable for industrial or consumer systems where automotive qualification is unnecessary | Choose SMB10J33A-M3/5B for cost-sensitive non-automotive designs requiring halogen-free compliance |
Compared with SMB10J33A-M3/5B and SMBJ33AHE3_A/H, the SMB10J33AHM3_A/I uniquely combines AEC-Q101 qualification, halogen-free construction, and 13" reel packaging - making it optimal for high-volume automotive production with strict environmental and reliability mandates.
Availability
SMB10J33AHM3_A/I is available at Aetrix Electronics and suitable for automotive electronics, industrial motor controls, and telecom infrastructure requiring stable component supply, full traceability, and lifecycle continuity.
Supply support for SMB10J33AHM3_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 power MOSFETs with emphasis on reliability and automotive-grade validation.
The SMB10J series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-power-density, surface-mount surge protection in harsh environments including automotive powertrain and chassis systems.
FAQ
What is the clamping voltage of SMB10J33AHM3_A/I at its rated peak pulse current?
The SMB10J33AHM3_A/I has a maximum clamping voltage (VC) of 53.3 V at its rated peak pulse current (IPPM) of 18.8 A under a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 standards and ensures protected circuits remain below critical voltage thresholds during surge events. The SMB10J33AHM3_A/I achieves this with low incremental surge resistance and a glass-passivated junction for consistent performance.
Is SMB10J33AHM3_A/I qualified for automotive applications?
Yes, SMB10J33AHM3_A/I is AEC-Q101 qualified, as confirmed in Vishay document 88422 revision 09-Jan-2024. The HM3 suffix denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification, and the part is explicitly listed under "Automotive ordering code: base P/NHM3_X". This makes SMB10J33AHM3_A/I suitable for use in engine control, ADAS, and body electronics where automotive-grade reliability is mandatory.
What is the standoff voltage (VWM) and why does it matter for SMB10J33AHM3_A/I?
The standoff voltage (VWM) of SMB10J33AHM3_A/I is 33 V - the maximum continuous reverse voltage the device can block without entering avalanche breakdown. This parameter ensures normal circuit operation without leakage or false triggering, while still allowing rapid clamping when transients exceed 36.7 V (VBR min). For SMB10J33AHM3_A/I, VWM = 33 V provides ideal margin above common 24 V automotive rails and 3.3 V/5 V logic supplies.
How does the SMB10J33AHM3_A/I package compare to SMA or SMC in terms of power handling?
The SMB10J33AHM3_A/I uses the SMB (DO-214AA) package, which delivers 1000 W peak pulse power - higher than standard SMA (typically ≤600 W) and comparable to SMC (often 1500 W) but in a smaller footprint (4.57 mm × 3.94 mm). Its RθJA of 72 °C/W reflects efficient thermal dissipation for its size, validated on 5.0 mm × 5.0 mm copper pads. Unlike SMC, SMB enables tighter board layouts without sacrificing surge robustness - a key advantage for space-constrained automotive modules using SMB10J33AHM3_A/I.
Can SMB10J33AHM3_A/I be used in bidirectional configurations?
No, SMB10J33AHM3_A/I is a unidirectional TVS diode, as indicated by its "J" (not "JCA") designation and cathode band marking. Bidirectional variants like SMB8J33CA exist in the same family but have different breakdown symmetry and clamping behavior. Using SMB10J33AHM3_A/I in bidirectional applications would leave one polarity unprotected. For AC or dual-rail protection, select a designated bidirectional part - SMB10J33AHM3_A/I must be oriented with cathode toward the protected line.
SMB10J33AHM3_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):
- 33V
- Voltage - Breakdown (Min):
- 36.7V
- Voltage - Clamping (Max) @ Ipp:
- 53.3V
- Current - Peak Pulse (10/1000µs):
- 18.8A
- 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)
SMB10J33AHM3_A/I FAQ
1.How can I place an order for SMB10J33AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J33AHM3_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 SMB10J33AHM3_A/I reliable?
The price and inventory of SMB10J33AHM3_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 SMB10J33AHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMB10J33AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J33AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J33AHM3_A/I?
SMB10J33AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J33AHM3_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 SMB10J33AHM3_A/I?
For technical support, including SMB10J33AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J33AHM3_A/I requirements.
6.How does Aetrix verify that SMB10J33AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMB10J33AHM3_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 SMB10J33AHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMB10J33AHM3_A/I?
All SMB10J33AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J33AHM3_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 SMB10J33AHM3_A/I part is unused and in its original packaging.
Return procedure for SMB10J33AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J33AHM3_A/I Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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