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Vishay General Semiconductor - Diodes Division SMB10J40A-M3/52
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- Part No.:
- SMB10J40A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J40A-M3/52.pdf
- Description:
- TVS DIODE 40VWM 64.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,745
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Product details
Overview
SMB10J40A-M3/52 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 protects MOSFETs, ICs, and sensor signal lines in automotive power electronics and industrial control systems.
For engineers reviewing the SMB10J40A-M3/52 datasheet, SMB10J40A-M3/52 pinout, SMB10J40A-M3/52 application, or SMB10J40A-M3/52 equivalent, key selection criteria include clamping performance under 10/1000 µs transients, AEC-Q101 qualification status, thermal resistance (RθJA = 72 °C/W), and halogen-free RoHS compliance per M3 suffix.
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 40 V) and fast response time (<1 ns), critical for protecting sensitive gate drivers and CAN/LIN bus interfaces against ESD and load dump events.
Designed for surface-mount assembly on 5.0 mm × 5.0 mm copper pads, it delivers 100 A non-repetitive forward surge capability (IFSM) and supports operation from –55 °C to +150 °C junction temperature, meeting MSL Level 1 reflow requirements (peak 260 °C).
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 voltage range at 1 mA test current; defines turn-on threshold tolerance |
| VC @ IPPM | 64.5 V - Clamped voltage at 15.5 A peak pulse current; determines protected circuit's worst-case overvoltage |
| PPPM | 1000 W - Peak pulse power handling with 10/1000 µs waveform; defines surge energy absorption capacity |
| ID @ VWM | ≤1.0 µA - Reverse leakage at rated stand-off voltage; ensures minimal standby power loss |
| RθJA | 72 °C/W - Junction-to-ambient thermal resistance; informs PCB copper pad sizing for thermal management |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line; carries full surge current during clamping |
| Cathode | Reverse-biased clamping terminal | Marked with band; connected to higher-potential rail (e.g., VBUS); initiates avalanche breakdown above VWM |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free & RoHS-compliant | M3 suffix confirms compliance with JEDEC J-STD-201 Class 2 whisker resistance and environmental regulations |
| Low incremental surge resistance | Enables tight clamping (VC/VBR ratio ≈ 1.45) and minimizes voltage overshoot during fast transients |
| Glass passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity stress |
| MSL Level 1 rating | Allows single-reflow processing without moisture sensitivity concerns (peak 260 °C) |
| Automotive-grade qualification | AEC-Q101 qualification covers HTGB, AC/HTRB, TC, and ESD tests required for under-hood applications |
Applications
| Automotive Power Distribution | Industrial Motor Drive Protection |
|---|---|
Use Scenario: Protecting 48 V battery-fed DC-DC converters and body control modules against load dump pulses up to 120 V. IC Role / Device Role / Timing Role: Unidirectional TVS placed across input rails to clamp surges before they reach buck controller ICs and gate drivers. Use Value: Limits voltage to ≤64.5 V during 10/1000 µs transients, preventing damage to 65 V-rated MOSFETs and enabling use of cost-optimized downstream components. | Use Scenario: Safeguarding IGBT gate driver inputs in variable-frequency drives exposed to switching-induced transients. IC Role / Device Role / Timing Role: TVS mounted directly at gate driver supply pins to suppress coupling from high-dV/dt power stage switching. Use Value: Sub-1 ns response ensures clamping occurs before gate oxide breakdown, preserving driver reliability in 20 kHz PWM systems. |
| Automotive Sensor Signal Lines | Telecom Power Interface |
Use Scenario: Shielding LIN bus transceivers and pressure sensor analog outputs from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-leakage (≤1 µA) unidirectional clamp on sensor VCC or signal line, referenced to ground. Use Value: Maintains signal integrity with <1 µA leakage at 40 V, avoiding offset errors in 12-bit ADC front-ends while surviving ±30 kV contact ESD. | Use Scenario: Protecting PoE-powered Ethernet switches' 57 V DC input from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary surge clamp on main DC input rail upstream of DC-DC converters and hot-swap controllers. Use Value: 1000 W PPPM rating handles IEC 61000-4-5 Level 4 (4 kV) surges without degradation, supporting field-replaceable module design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ40A-E3/52 | Same VWM (40 V), same SMB package, but lower PPPM (600 W) and higher VC (69.4 V) | Limited to lower-energy transients; not AEC-Q101 qualified | Select when cost sensitivity outweighs automotive qualification or 1000 W surge margin |
| 1.5SMC40AHE3_A/H | Higher package thermal mass (SMC), same VWM, 1500 W PPPM, but larger footprint and no AEC-Q101 | Better power handling but incompatible with space-constrained SMB layouts | Choose only if board area allows SMC and automotive qualification is not required |
Compared with SMBJ40A-E3/52 and 1.5SMC40AHE3_A/H, SMB10J40A-M3/52 uniquely combines AEC-Q101 qualification, 1000 W surge rating, and SMB footprint-enabling drop-in replacement in automotive ECUs where space, reliability, and surge margin are jointly constrained.
Availability
SMB10J40A-M3/52 is available at Aetrix Electronics and suitable for automotive power distribution, industrial motor drive protection, and telecom power interface designs requiring stable component supply, halogen-free compliance, and AEC-Q101 validation.
Supply support for SMB10J40A-M3/52 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 high-reliability, high-power-density solutions.
The SMB10JxxA series targets automotive and industrial surge protection, engineered to deliver high PPPM in compact SMB packages while meeting stringent AEC-Q101 and RoHS requirements.
FAQ
What is the clamping voltage of SMB10J40A-M3/52 at its rated peak pulse current?
The SMB10J40A-M3/52 has a maximum clamping voltage (VC) of 64.5 V at 15.5 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured with the device mounted on 5.0 mm × 5.0 mm copper pads per the datasheet test condition, and defines the upper voltage limit imposed on protected circuitry during surge events.
Is SMB10J40A-M3/52 qualified for automotive applications?
Yes, SMB10J40A-M3/52 is AEC-Q101 qualified. The "HM3" designation in its full ordering code (SMB10J40AHM3_B/H) confirms halogen-free, RoHS-compliant, and AEC-Q101 validated construction. This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and ESD, making SMB10J40A-M3/52 suitable for under-hood and chassis-mounted automotive electronics.
What does the "M3" suffix mean in SMB10J40A-M3/52?
The "M3" suffix in SMB10J40A-M3/52 indicates halogen-free, RoHS-compliant construction that meets JESD201 Class 2 whisker resistance requirements. It also denotes commercial-grade temperature rating (–55 °C to +150 °C) and matte tin-plated leads compatible with J-STD-002 solderability standards-distinct from "E3" (RoHS only) and "HM3" (AEC-Q101 + halogen-free).
How does SMB10J40A-M3/52 differ from SMBJ40A in surge handling capability?
SMB10J40A-M3/52 delivers 1000 W peak pulse power (PPPM) versus 600 W for SMBJ40A-E3/52, due to optimized chip geometry and lower incremental resistance. Its clamping voltage is also tighter-64.5 V vs. 69.4 V at rated IPPM-resulting in superior protection margin for 65 V-rated downstream components in high-energy environments like 48 V automotive systems.
What is the thermal resistance of SMB10J40A-M3/52, and how does it affect layout?
SMB10J40A-M3/52 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. To maintain safe junction temperatures during repeated surges, PCB layout must provide adequate copper area and thermal vias-reducing RθJA below 50 °C/W may require doubling pad size or adding internal ground planes connected via ≥6 thermal vias per pad.
SMB10J40A-M3/52 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):
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMB10J40A-M3/52 FAQ
1.How can I place an order for SMB10J40A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J40A-M3/52 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 SMB10J40A-M3/52 reliable?
The price and inventory of SMB10J40A-M3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J40A-M3/52 is usually 5 days.
3.What payment methods are accepted for SMB10J40A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J40A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J40A-M3/52?
SMB10J40A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J40A-M3/52 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 SMB10J40A-M3/52?
For technical support, including SMB10J40A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J40A-M3/52 requirements.
6.How does Aetrix verify that SMB10J40A-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMB10J40A-M3/52 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 SMB10J40A-M3/52 meets industry standards.
7.What is the process for return or replacement of SMB10J40A-M3/52?
All SMB10J40A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J40A-M3/52, 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 SMB10J40A-M3/52 part is unused and in its original packaging.
Return procedure for SMB10J40A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J40A-M3/52 Tags
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