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Vishay General Semiconductor - Diodes Division SMB10J40A-E3/52
- Part No.:
- SMB10J40A-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J40A-E3/52.pdf
- Description:
- TVS DIODE 40VWM 64.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,617
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Product details
Overview
SMB10J40A-E3/52 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 40 V stand-off voltage (VWM), 44.4–49.1 V breakdown voltage (VBR), 64.5 V clamping voltage (VC) at 15.5 A peak pulse current (IPPM), and 1000 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed in automotive power supply inputs and industrial sensor interfaces.
For engineers reviewing the SMB10J40A-E3/52 datasheet, SMB10J40A-E3/52 pinout, SMB10J40A-E3/52 application, or SMB10J40A-E3/52 equivalent, key selection criteria include clamping performance under 1000 W surges, AEC-Q101 qualification for automotive use, RoHS-compliant E3 termination, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector, triggering when reverse voltage exceeds its breakdown threshold (VBR = 44.4–49.1 V at IT = 1 mA) to divert transient energy away from downstream ICs. Its low incremental surge resistance and fast response time (<1 ns) ensure effective suppression of inductive switching spikes and ESD events.
Thermally, it supports operation from –55 °C to +150 °C junction temperature, with RθJA = 72 °C/W and RθJL = 20 °C/W. It meets MSL level 1 per J-STD-020, peak reflow at 260 °C, and is qualified to AEC-Q101 for automotive under-hood applications.
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 at 1 mA - precise breakdown window defining turn-on consistency |
| VC @ IPPM | 64.5 V at 15.5 A - clamping voltage limiting protected circuit stress during 1000 W transients |
| PPPM | 1000 W (10/1000 µs) - peak surge power handling capacity for automotive load-dump immunity |
| IFSM | 100 A (8.3 ms half-sine) - forward surge rating confirming robustness against accidental polarity reversal |
| TJ max | +150 °C - enables under-hood deployment without derating in engine control units |
| Package | SMB (DO-214AA) - surface-mount footprint compatible with standard 0.2" × 0.2" thermal pad layout |
Pinout & Package
SMB10J40A-E3/52 uses the SMB (DO-214AA) package: molded plastic case with matte tin-plated leads, cathode indicated by a color band. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H), with 2.18 mm minimum lead width and 5.59 mm overall length.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to lower-potential side (e.g., ground or return) in unidirectional configuration |
| Cathode | Reverse-biased clamping node | Connected to protected line (e.g., 40 V rail); color band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock |
| Glass passivated junction | Ensures stable VBR over lifetime and immunity to moisture-induced parameter drift |
| MSL Level 1 | Zero floor life limitation - can be stored indefinitely before reflow soldering at 260 °C peak |
| Low profile SMB package | Enables high-density PCB layouts while maintaining thermal performance via 0.2" × 0.2" copper pads |
| RoHS-compliant E3 termination | Matte tin plating meets J-STD-002 solderability and JESD22-B102 whisker resistance Class 2 |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting microcontroller power input in body control modules exposed to ISO 7637-2 load dump pulses. IC Role / Device Role / Timing Role: Shunt clamping device placed between 40 V battery rail and LDO input. Use Value: Limits transient voltage to ≤64.5 V during 1000 W surges, preventing LDO latch-up or damage. | Use Scenario: Safeguarding analog output lines of pressure sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Bidirectional-capable but used unidirectionally across sensor supply and ground to clamp ESD and inductive kickback. Use Value: Clamps 8 kV contact ESD per IEC 61000-4-2 with <1 ns response, preserving 12-bit ADC accuracy. |
| Telecom DC Power Feeds | Consumer USB-C Power Delivery Lines |
Use Scenario: Guarding 48 V PoE+ power entry points in network switches against lightning-induced surges. IC Role / Device Role / Timing Role: Primary front-end TVS on DC input before DC/DC converter stage. Use Value: Handles 10/1000 µs transients up to 1000 W without degradation, meeting IEC 61000-4-5 Level 4. | Use Scenario: Protecting USB-C CC and VBUS lines in portable docking stations during hot-plug events. IC Role / Device Role / Timing Role: Unidirectional clamping on VBUS rail referenced to ground, sized for 40 V nominal PD profiles. Use Value: Maintains 40 V stand-off while clamping to 64.5 V, ensuring safe operation within USB PD 3.1 voltage margins. |
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 SMB package, identical VWM/VBR/VC ratings, but rated for 600 W PPPM (vs. 1000 W) | Limited to lower-energy transients; not suitable for automotive load dump per ISO 7637-2 | Select SMB10J40A-E3/52 where full 1000 W surge immunity is required |
| 1.5SMC40AHE3/A | Higher-power SMC package (1500 W), same 40 V VWM, but larger footprint (7.11 mm × 6.22 mm) | Requires PCB redesign; preferred only when thermal margin exceeds SMB limits in high-ambient environments | Choose SMB10J40A-E3/52 for space-constrained automotive or industrial SMT designs |
Compared with SMBJ40A-E3/52 and 1.5SMC40AHE3/A, SMB10J40A-E3/52 uniquely delivers 1000 W surge capability in the compact SMB footprint while maintaining AEC-Q101 qualification - enabling drop-in replacement for legacy 600 W parts only when higher energy handling is validated in system-level testing.
Availability
SMB10J40A-E3/52 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and telecom power feed applications requiring stable component supply, long-term lifecycle support, and AEC-Q101 compliance.
Supply support for SMB10J40A-E3/52 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMB10JxxA series belongs to Vishay's TRANSZORB® TVS portfolio, engineered specifically for high-power, surface-mount transient suppression in harsh environments including automotive, industrial, and telecom infrastructure.
FAQ
What is the clamping voltage of SMB10J40A-E3/52 at its rated peak pulse current?
The SMB10J40A-E3/52 has a maximum clamping voltage (VC) of 64.5 V at 15.5 A peak pulse current (IPPM), measured using the standardized 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during a full 1000 W transient event, and is confirmed in Vishay document 88422, page 2, unidirectional electrical characteristics table.
Is SMB10J40A-E3/52 qualified for automotive applications?
Yes, SMB10J40A-E3/52 is AEC-Q101 qualified, as explicitly stated in the Vishay datasheet (document 88422, revision 09-Jan-2024). The "E3" suffix denotes RoHS-compliant commercial grade, and the part meets all stress tests required for automotive under-hood and chassis-mounted electronics, including temperature cycling, humidity, and mechanical shock.
What is the thermal resistance from junction to ambient for SMB10J40A-E3/52?
The typical thermal resistance from junction to ambient (RθJA) for SMB10J40A-E3/52 is 72 °C/W, measured on a standard 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad per terminal. This value assumes JEDEC-standard board layout and is specified in the Thermal Characteristics section of Vishay document 88422, page 4.
Does SMB10J40A-E3/52 have bidirectional capability?
No, SMB10J40A-E3/52 is a unidirectional TVS diode, as indicated by the "A" suffix and confirmed in the "UNIDIRECTIONAL" table of Vishay document 88422. It conducts only in forward bias and clamps in reverse bias; bidirectional variants (e.g., SMB8J40CA) use the "CA" suffix and different marking codes.
What does the "-E3/52" suffix mean in SMB10J40A-E3/52?
The "-E3/52" suffix indicates RoHS-compliant matte tin plating (E3) and packaging in 7" diameter plastic tape and reel containing 750 units (52). This ordering code is defined in the Ordering Information table on page 3 of Vishay document 88422, and confirms compliance with J-STD-002 solderability and JESD22-B102 whisker resistance Class 2.
SMB10J40A-E3/52 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 (SMB)
SMB10J40A-E3/52 FAQ
1.How can I place an order for SMB10J40A-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J40A-E3/52 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-E3/52 reliable?
The price and inventory of SMB10J40A-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J40A-E3/52 is usually 5 days.
3.What payment methods are accepted for SMB10J40A-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J40A-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J40A-E3/52?
SMB10J40A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J40A-E3/52 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-E3/52?
For technical support, including SMB10J40A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J40A-E3/52 requirements.
6.How does Aetrix verify that SMB10J40A-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMB10J40A-E3/52 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-E3/52 meets industry standards.
7.What is the process for return or replacement of SMB10J40A-E3/52?
All SMB10J40A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J40A-E3/52, 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-E3/52 part is unused and in its original packaging.
Return procedure for SMB10J40A-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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