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Vishay General Semiconductor - Diodes Division SMB10J40AHM3_A/H
- Part No.:
- SMB10J40AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J40AHM3_A/H.pdf
- Description:
- TVS DIODE 40VWM 64.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMB10J40AHM3_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 with 1000 W peak pulse power (10/1000 µs), 40 V stand-off voltage (VWM), and 64.5 V maximum clamping voltage (VC) at 15.5 A peak pulse current. It is AEC-Q101 qualified and used to protect automotive sensor signal lines, MOSFET gates, and microcontroller I/O against inductive switching transients.
For engineers reviewing the SMB10J40AHM3_A/H datasheet, SMB10J40AHM3_A/H pinout, SMB10J40AHM3_A/H application, or SMB10J40AHM3_A/H equivalent, key selection criteria include clamping performance under 10/1000 µs surges, AEC-Q101 qualification status, thermal resistance (RθJA = 72 °C/W), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds its 44.4–49.1 V breakdown range (VBR at 1 mA). Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response (<1 ns), enabling effective suppression of ESD and load-dump transients in automotive ECUs and industrial controllers.
The device is rated for 100 A non-repetitive forward surge (IFSM, 8.3 ms half-sine), junction temperature up to +150 °C, and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its matte tin-plated leads comply with J-STD-002 solderability and JESD22-B102 whisker testing (Class 2).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 40 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 44.4 V / 49.1 V - Breakdown occurs within this range at 1 mA test current, defining turn-on threshold |
| VC @ IPPM | 64.5 V - Clamped voltage at 15.5 A peak pulse current (10/1000 µs), limiting stress on protected ICs |
| PPPM | 1000 W - Peak pulse power handling capability under standardized 10/1000 µs waveform |
| IFSM | 100 A - Single half-sine surge current rating (8.3 ms), supporting robust front-end protection |
| TJ max | +150 °C - Maximum junction temperature, enabling use in under-hood automotive environments |
| RθJA | 72 °C/W - Thermal resistance from junction to ambient on standard 0.2" × 0.2" copper pads |
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); recommended pad layout: 5.59 mm × 1.52 mm per terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path (cathode-banded end is cathode) | Connected to protected circuit's ground or low-side return; enables unidirectional clamping to ground |
| Cathode | Avalanche breakdown node | Connected to protected line (e.g., CAN_H, LIN, sensor output); conducts surge current to ground during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces |
| Glass passivated junction | Ensures stable VBR tolerance, low leakage (<1.0 µA), and long-term reliability under thermal cycling |
| MSL Level 1 | Supports lead-free reflow up to 260 °C without moisture-induced failure |
| Halogen-free & RoHS-compliant | HM3 suffix confirms compliance with environmental regulations and automotive material standards |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast transients, improving protection margin for 3.3 V/5 V logic |
Applications
| Automotive Sensor Protection | Industrial Motor Drive I/O |
|---|---|
Use Scenario: Protecting analog outputs of pressure/temperature sensors in engine bay modules exposed to ISO 7637-2 pulse 1 and pulse 5a transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between sensor output and microcontroller ADC input. Use Value: Limits voltage to ≤64.5 V during 1000 W surges, preventing ADC saturation and latch-up while maintaining <1.0 µA leakage at 40 V nominal rail. | Use Scenario: Safeguarding digital enable/disable signals routed to gate drivers in variable-frequency drives subject to inductive kickback. IC Role / Device Role / Timing Role: TVS diode connected from control line to ground, absorbing 8.3 ms 100 A surges from relay coil de-energization. Use Value: Withstands IFSM = 100 A and clamps at 64.5 V, ensuring reliable signal integrity without damaging 3.3 V logic-level interface ICs. |
| On-Board Charger (OBC) Communication Lines | Automotive Body Control Module (BCM) |
Use Scenario: Shielding LIN bus transceivers in EV on-board chargers from battery voltage transients during contactor switching. IC Role / Device Role / Timing Role: Unidirectional TVS on LIN data line referenced to chassis ground. Use Value: Achieves <1 ns response and 64.5 V clamping at 15.5 A, preserving signal rise time and meeting LIN physical layer timing requirements. | Use Scenario: Protecting wake-up inputs and CAN transceiver pins in BCMs subjected to load dump events per ISO 16750-2. IC Role / Device Role / Timing Role: Primary TVS on 12 V supply rail input and secondary clamps on low-voltage signal paths. Use Value: Rated for TJ = 150 °C and qualified to AEC-Q101, enabling operation in high-ambient-temperature BCM enclosures near fuse boxes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ40AHE3_A/H | Same VWM (40 V), identical SMB package, but lower PPPM (600 W) and higher VC (69.4 V at 8.6 A) | Lower energy handling limits use in high-surge automotive front-end locations | Select SMB10J40AHM3_A/H when 1000 W surge immunity is required; SMBJ40AHE3_A/H suits cost-sensitive, lower-energy zones |
| 1.5SMC40AH | Higher package (SMC/DO-214AB), same VWM (40 V), PPPM = 1500 W, VC = 64.5 V at 23.3 A | Larger footprint (7.11 mm × 6.22 mm) requires PCB redesign; better thermal dissipation | Choose 1.5SMC40AH only if board space allows and >1000 W margin is needed; SMB10J40AHM3_A/H optimizes space-constrained automotive modules |
Compared with SMBJ40AHE3_A/H and 1.5SMC40AH, SMB10J40AHM3_A/H uniquely delivers 1000 W surge capacity in the compact SMB footprint with AEC-Q101 qualification-making it optimal for space-limited, high-reliability automotive signal-line protection where both energy rating and qualification are mandatory.
Availability
SMB10J40AHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial motor drive I/O protection, and on-board charger communication lines requiring stable component supply across production lifecycles.
Supply support for SMB10J40AHM3_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, TVS devices, and optoelectronics with emphasis on reliability, automotive qualification, and high-power density packaging.
The SMB10JxxA series belongs to Vishay's TRANSZORB® high-power TVS family, engineered specifically for AEC-Q101-compliant transient suppression in harsh automotive and industrial environments where compact size and repeatable clamping performance are critical.
FAQ
What is the clamping voltage of SMB10J40AHM3_A/H at its rated peak pulse current?
The SMB10J40AHM3_A/H has a maximum clamping voltage (VC) of 64.5 V at its specified peak pulse current (IPPM) of 15.5 A under the 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream ICs experience controlled overvoltage stress during surge events. The clamping performance is guaranteed across the full operating temperature range and forms the basis for safe margin design in 40 V system rails.
Is SMB10J40AHM3_A/H suitable for automotive applications?
Yes, SMB10J40AHM3_A/H is AEC-Q101 qualified and explicitly designated for automotive use via its HM3 suffix (halogen-free, RoHS-compliant, and AEC-Q101 qualified). It meets MSL Level 1 for lead-free reflow, operates from −55 °C to +150 °C, and is validated for protection in engine control units, body control modules, and ADAS sensor interfaces per ISO 7637-2 and ISO 16750-2 requirements.
What does the "HM3" suffix indicate in SMB10J40AHM3_A/H?
The "HM3" suffix in SMB10J40AHM3_A/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this variant from commercial-grade E3/M3 versions and confirms compliance with automotive material standards (e.g., JESD201 Class 2 whisker resistance) and environmental directives-critical for Tier 1 suppliers and OEMs requiring full traceability and process control.
How does SMB10J40AHM3_A/H differ from bidirectional TVS diodes like SMB8J40CA?
SMB10J40AHM3_A/H is unidirectional and optimized for DC-coupled protection (e.g., power rails, single-ended signals), offering 1000 W PPPM and 100 A IFSM. In contrast, SMB8J40CA is bidirectional with 800 W PPPM and no IFSM rating, intended for AC-coupled or symmetrical signal lines (e.g., RS-485, USB D+/D−). Their VWM, VBR, and VC values differ due to internal structure-SMB10J40AHM3_A/H cannot replace SMB8J40CA in bidirectional applications without circuit redesign.
What PCB layout guidance applies to SMB10J40AHM3_A/H for optimal thermal and electrical performance?
For optimal performance, mount SMB10J40AHM3_A/H on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in the Vishay datasheet. Use short, wide traces to minimize inductance; avoid vias in the main surge path. Ensure adequate clearance to adjacent components to prevent arcing during clamping. Thermal relief should be minimized on cathode/anode pads to maintain RθJL = 20 °C/W and support reliable 150 °C junction operation.
SMB10J40AHM3_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):
- 40V
- Voltage - Breakdown (Min):
- 44.4V
- Voltage - Clamping (Max) @ Ipp:
- 64.5V
- Current - Peak Pulse (10/1000µs):
- 15.5A
- 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)
SMB10J40AHM3_A/H FAQ
1.How can I place an order for SMB10J40AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J40AHM3_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 SMB10J40AHM3_A/H reliable?
The price and inventory of SMB10J40AHM3_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 SMB10J40AHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMB10J40AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J40AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J40AHM3_A/H?
SMB10J40AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J40AHM3_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 SMB10J40AHM3_A/H?
For technical support, including SMB10J40AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J40AHM3_A/H requirements.
6.How does Aetrix verify that SMB10J40AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMB10J40AHM3_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 SMB10J40AHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMB10J40AHM3_A/H?
All SMB10J40AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J40AHM3_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 SMB10J40AHM3_A/H part is unused and in its original packaging.
Return procedure for SMB10J40AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J40AHM3_A/H 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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DESD5V0U1BA-7
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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Diodes Incorporated
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