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Vishay General Semiconductor - Diodes Division SMB10J40-E3/52
- Part No.:
- SMB10J40-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J40-E3/52.pdf
- Description:
- TVS DIODE 40VWM 71.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,583
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Product details
Overview
SMB10J40-E3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AA (SMB) 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, and 1000 W peak pulse power rating with 10/1000 µs waveform.
For engineers reviewing the SMB10J40-E3/52 datasheet, SMB10J40-E3/52 pinout, SMB10J40-E3/52 application, or SMB10J40-E3/52 equivalent, key selection criteria include clamping performance under 1000 W surges, unidirectional polarity for DC rail protection, AEC-Q101 qualification for automotive use, RoHS-compliant matte tin terminations, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamped crowbar device, leveraging an avalanche breakdown junction to shunt transient energy away from protected circuitry. Its glass-passivated chip junction ensures stable VBR tolerance and low leakage (<1.0 µA at 40 V), while its low incremental surge resistance enables rapid response to ESD and lightning-induced transients.
The SMB10J40-E3/52 is rated for -55 °C to +150 °C operating junction temperature, with thermal resistance of 72 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead). It meets MSL Level 1 per J-STD-020 and passes JESD201 Class 1A whisker testing, confirming robustness for high-reliability surface-mount assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 40 V - Maximum continuous reverse working voltage before clamping initiates; defines safe DC operating margin. |
| VBR min/max | 44.4 V / 49.1 V - Breakdown voltage range at 1 mA test current; ensures consistent turn-on threshold across production lots. |
| VC @ IPPM | 64.5 V - Clamping voltage at 15.5 A peak pulse current (10/1000 µs); limits downstream voltage stress during surge events. |
| PPPM | 1000 W - Peak pulse power handling capability; supports IEC 61000-4-5 Level 4 (4 kV) surge immunity on 12–48 V systems. |
| ID @ VWM | ≤1.0 µA - Reverse leakage current at rated stand-off voltage; minimizes standby power loss in battery-powered applications. |
| TJ max | 150 °C - Maximum junction temperature; enables operation in under-hood automotive environments and industrial enclosures. |
| Package | DO-214AA (SMB) - Standardized surface-mount outline with cathode band marking; compatible with JEDEC MS-012 footprints. |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, cathode indicated by color band on one end. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H), 5.0 mm × 5.0 mm recommended copper pad area per terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection in unidirectional configuration | Connected to ground or return path; completes conduction path when transient exceeds VBR. |
| Cathode | High-side connection; marked with band | Connected to protected line (e.g., 40 V rail); avalanche conduction occurs from cathode to anode during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock per JESD22 standards. |
| Glass passivated junction | Ensures stable electrical parameters over time and environmental stress, reducing parameter drift in long-life industrial deployments. |
| MSL Level 1 rating | Allows unlimited floor life and reflow up to 260 °C peak, eliminating bake-out requirements prior to assembly. |
| 1000 W peak pulse power | Provides robust protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 combination wave surges in 24/48 V systems. |
| RoHS-compliant & whisker-tested | E3 suffix confirms compliance with EU RoHS Directive 2011/65/EU and JESD201 Class 1A tin whisker mitigation. |
Applications
| Automotive Power Rail Protection | Industrial PLC I/O Module Protection |
|---|---|
Use Scenario: Protecting 40 V battery-fed control modules (e.g., body control units, lighting drivers) from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 40 V supply rail and chassis ground to clamp surges above 44.4 V. Use Value: Limits voltage seen by downstream DC-DC converters and microcontrollers to ≤64.5 V during 1000 W transients, preventing latch-up or gate oxide damage. |
Use Scenario: Safeguarding analog input channels (e.g., 4–20 mA sensor interfaces) in programmable logic controllers exposed to field wiring surges. IC Role / Device Role / Timing Role: TVS mounted at connector entry point to divert induced transients before reaching precision op-amps and ADC front-ends. Use Value: Maintains signal integrity by clamping fast-rising transients within 1 ns response time while adding <1.0 µA leakage at 40 V operating point. |
| Telecom DC Power Feeds | Consumer Appliance Motor Drive Circuits |
Use Scenario: Securing -48 V telecom rectifier outputs against lightning-induced surges on central office distribution lines. IC Role / Device Role / Timing Role: Unidirectional TVS connected cathode-to-line, anode-to-ground to absorb bidirectional energy via forward conduction during negative excursions. Use Value: Withstands repeated 10/1000 µs surges up to 1000 W without degradation, supporting GR-1089-CORE compliance for network equipment. |
Use Scenario: Shielding BLDC motor driver ICs from inductive kickback generated by brushed DC motors in home appliances. IC Role / Device Role / Timing Role: TVS placed across motor terminals or H-bridge supply rails to clamp flyback voltages exceeding 40 V. Use Value: Prevents destructive voltage spikes (>100 V) from reaching gate drivers by clamping at 64.5 V with sub-nanosecond response, extending MOSFET lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ40A-E3/52 | Same DO-214AA package, identical VWM (40 V), VBR (44.4–49.1 V), VC (64.5 V), and PPPM (1000 W); differs only in part numbering convention (SMBJ vs SMB10). | No functional difference; SMBJ40A-E3/52 is Vishay's alternate designation for same die and construction. | Select SMBJ40A-E3/52 if sourcing from distributors listing SMBJ-series nomenclature; electrically and mechanically interchangeable. |
| 1.5SMC40A | Higher RθJA (90 °C/W vs 72 °C/W), larger DO-214AB (SMC) package (7.11 mm × 6.22 mm), same VWM/VBR/VC but lower surge current rating (14.3 A vs 15.5 A at 1000 W). | Requires larger PCB footprint and offers reduced thermal margin in high-ambient environments; suitable where space allows and derating is acceptable. | Choose 1.5SMC40A only when DO-214AA footprint is unavailable; verify thermal performance in enclosure with >70 °C ambient. |
Compared with SMBJ40A-E3/52, SMB10J40-E3/52 offers identical protection performance in a standardized SMB footprint; versus 1.5SMC40A, it delivers superior power density and thermal efficiency in space-constrained designs, making it preferred for automotive and industrial SMT layouts.
Availability
SMB10J40-E3/52 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial PLC I/O modules, telecom DC feeds, and consumer appliance motor drive circuits requiring stable component supply and AEC-Q101 assurance.
Supply support for SMB10J40-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 SMB10J series belongs to Vishay's TRANSZORB® TVS portfolio, engineered for high-power-density transient suppression in automotive, industrial, and telecom infrastructure where compact size and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of SMB10J40-E3/52 at its rated peak pulse current?
The SMB10J40-E3/52 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 per ANSI/IEEE C62.35 and guarantees that downstream components will not experience voltages exceeding 64.5 V during a full-rated 1000 W surge event. The SMB10J40-E3/52 maintains this clamping performance across its specified operating temperature range.
Is SMB10J40-E3/52 suitable for automotive applications?
Yes, SMB10J40-E3/52 is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments with operating junction temperatures up to 150 °C. Its glass-passivated junction, MSL Level 1 reflow compatibility, and JESD201 Class 1A whisker resistance make it appropriate for body control modules, lighting drivers, and infotainment power supplies. The SMB10J40-E3/52 meets critical automotive surge immunity standards including ISO 7637-2.
What does the "E3/52" suffix indicate in SMB10J40-E3/52?
The "E3" suffix denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads meeting J-STD-002 solderability and JESD201 Class 1A whisker resistance. The "/52" indicates packaging in 7-inch diameter plastic tape and reel, with a base quantity of 750 units per reel. This packaging format is optimized for high-speed pick-and-place assembly and aligns with industry-standard SMT logistics for the SMB10J40-E3/52.
How does SMB10J40-E3/52 differ from bi-directional variants like SMB8J40CA?
The SMB10J40-E3/52 is unidirectional, with a defined cathode band and forward conduction capability, making it ideal for DC rail protection where polarity is fixed. In contrast, SMB8J40CA is bi-directional, offering symmetrical clamping for AC or floating signal lines but with lower peak pulse power (800 W vs 1000 W) and higher clamping voltage at equivalent current. The SMB10J40-E3/52 provides superior power handling for single-polarity systems.
What PCB layout guidance applies to SMB10J40-E3/52 for optimal thermal and surge performance?
For optimal performance, mount SMB10J40-E3/52 on minimum 5.0 mm × 5.0 mm copper pads per terminal, as specified in Vishay's datasheet Figure 2. Use short, wide traces to minimize inductance, and avoid thermal relief on pads to maximize heat dissipation. The SMB10J40-E3/52 achieves its rated 1000 W pulse power only with this pad layout; smaller pads reduce surge capability and increase junction temperature rise.
SMB10J40-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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 40V
- Voltage - Breakdown (Min):
- 44.4V
- Voltage - Clamping (Max) @ Ipp:
- 71.4V
- Current - Peak Pulse (10/1000µs):
- 14A
- 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)
SMB10J40-E3/52 FAQ
1.How can I place an order for SMB10J40-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J40-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 SMB10J40-E3/52 reliable?
The price and inventory of SMB10J40-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 SMB10J40-E3/52 is usually 5 days.
3.What payment methods are accepted for SMB10J40-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J40-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J40-E3/52?
SMB10J40-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J40-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 SMB10J40-E3/52?
For technical support, including SMB10J40-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J40-E3/52 requirements.
6.How does Aetrix verify that SMB10J40-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMB10J40-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 SMB10J40-E3/52 meets industry standards.
7.What is the process for return or replacement of SMB10J40-E3/52?
All SMB10J40-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J40-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 SMB10J40-E3/52 part is unused and in its original packaging.
Return procedure for SMB10J40-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J40-E3/52 Tags
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