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Vishay General Semiconductor - Diodes Division SMB10J40AHE3/5B
- Part No.:
- SMB10J40AHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J40AHE3/5B.pdf
- Description:
- TVS DIODE 40VWM 64.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,196
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Product details
Overview
SMB10J40AHE3/5B 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 clamping voltage (VC) at 15.5 A peak pulse current. It is AEC-Q101 qualified and used to protect automotive sensor signal lines, power rails, and MOSFET gates against inductive switching transients.
For engineers reviewing the SMB10J40AHE3/5B datasheet, SMB10J40AHE3/5B pinout, SMB10J40AHE3/5B application, or SMB10J40AHE3/5B equivalent, this page delivers verified electrical parameters, automotive-grade qualification status, thermal resistance data, clamping performance under standardized surge waveforms, and real-world placement guidance for PCB layout and automated assembly.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds its breakdown threshold (44.4–49.1 V), it rapidly transitions from high-impedance to low-impedance state, diverting surge current away from downstream circuitry. Its glass-passivated junction ensures stable leakage (<1.0 µA at 40 V) and repeatable breakdown behavior across temperature.
Designed for surface-mount reliability, SMB10J40AHE3/5B features MSL Level 1 moisture sensitivity, matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and thermal resistance of 72 °C/W (junction-to-ambient) on standard 5.0 mm × 5.0 mm copper pads - enabling robust thermal management in space-constrained automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 40 V - maximum continuous reverse operating voltage before clamping initiates; defines safe signal line or rail voltage margin. |
| VBR min/max | 44.4 V / 49.1 V - breakdown voltage range at 1 mA test current; ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 64.5 V at 15.5 A - clamping voltage under 10/1000 µs surge; limits protected IC stress to ≤64.5 V during worst-case transients. |
| PPPM | 1000 W - peak pulse power handling capability; supports high-energy surges common in automotive load-dump or ISO 7637-2 tests. |
| RθJA | 72 °C/W - junction-to-ambient thermal resistance on 5.0 mm × 5.0 mm pads; informs board-level thermal design for sustained surge duty cycles. |
| AEC-Q101 | Qualified - certified for automotive electronic systems per stress test requirements including HTOL, TCT, and ESD. |
| Package | SMB (DO-214AA) - industry-standard 2-pin surface-mount outline with cathode band marking; compatible with pick-and-place and reflow processes. |
Pinout & Package
Package: SMB (DO-214AA), 2-terminal surface-mount device with cathode band marking on one end. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); recommended pad layout: 5.59 mm × 2.18 mm minimum per terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection in unidirectional configuration | Connected to ground or low-impedance return path; carries full surge current during clamping. |
| Cathode (banded end) | High-side connection in unidirectional configuration | Connected to protected line (e.g., sensor supply or CAN bus); defines polarity and clamping reference point. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q101 qualified - validated for under-hood and chassis-mounted electronics requiring long-term reliability in harsh environments. |
| Clamping performance | 64.5 V clamping at 15.5 A (10/1000 µs) - limits voltage overshoot to safe levels for 3.3 V/5 V/12 V logic and analog front-ends. |
| Surge robustness | 1000 W peak pulse power rating - withstands repetitive or single-event transients per ISO 7637-2 Pulse 1, 2a, 3a/b, and 5a. |
| Manufacturing readiness | MSL Level 1, matte tin plating, J-STD-002 solderability - supports high-yield SMT assembly without baking or special handling. |
| Leakage control | ≤1.0 µA reverse leakage at 40 V - prevents signal integrity degradation or battery drain in always-on automotive circuits. |
Applications
| Automotive Sensor Protection | Power Rail Surge Suppression |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver inputs and analog sensor outputs (e.g., pressure, temperature) in engine control units and body modules. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed directly at connector or IC input pins to clamp fast-rising ESD and load-switching spikes. Use Value: Prevents latch-up or permanent damage to 5 V tolerant receivers by limiting transient voltage to ≤64.5 V while maintaining <1 µA standby leakage. | Use Scenario: Safeguarding 12 V battery-fed microcontroller power supplies and motor driver gate drive rails in ADAS and infotainment systems. IC Role / Device Role / Timing Role: Parallel-connected TVS across VDD-GND to absorb load-dump energy (ISO 7637-2 Pulse 5a) and prevent brownout or reset events. Use Value: Delivers 1000 W surge capacity with 72 °C/W thermal resistance, enabling reliable operation without heatsinking on standard PCB copper areas. |
| Industrial I/O Interface Protection | Consumer Device Port Protection |
Use Scenario: Shielding RS-485/RS-232 communication ports in PLCs and industrial HMIs from field-induced surges and ground potential differences. IC Role / Device Role / Timing Role: Bidirectional-capable variant not applicable; SMB10J40AHE3/5B used in unidirectional configuration with series impedance for asymmetric line protection. Use Value: Provides precise 40 V standoff and sharp 44.4–49.1 V breakdown to avoid false triggering while ensuring sub-65 V clamping during 1 kV/500 A transients. | Use Scenario: Securing USB power delivery lines and HDMI hot-plug detection circuits in smart displays and docking stations against ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS (typ. <100 pF at 0 V) placed inline with VBUS or D+/D− to suppress ±8 kV contact ESD per IEC 61000-4-2. Use Value: Maintains signal integrity with minimal capacitive loading while delivering 1000 W surge immunity - critical for high-speed interface compliance. |
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 SMB package, 1000 W PPPM, but commercial-grade (non-AEC-Q101); VBR 44.4–49.1 V, VC 64.5 V - identical electrical specs except qualification status. | Not suitable for automotive production; acceptable for industrial or consumer prototyping where AEC-Q101 is not mandated. | Select SMBJ40A-E3/52 only if automotive qualification is unnecessary and cost optimization is prioritized. |
| SMCJ40A-13-F | Larger SMC (DO-214AB) package; same 40 V VWM, 1500 W PPPM, higher thermal mass; RθJA ≈ 35 °C/W - superior power handling but requires more PCB area. | Better suited for high-repetition surge environments (e.g., motor drives) where SMB10J40AHE3/5B may thermally saturate. | Choose SMCJ40A-13-F when >1000 W surge energy or lower thermal resistance is required, accepting larger footprint. |
Compared with SMBJ40A-E3/52, SMB10J40AHE3/5B adds AEC-Q101 qualification without sacrificing clamping or power rating; versus SMCJ40A-13-F, it trades 500 W extra pulse power and lower thermal resistance for 40% smaller PCB area and automated placement compatibility - making it optimal for space-constrained automotive modules needing certified reliability.
Availability
SMB10J40AHE3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial I/O protection, and consumer port hardening requiring stable component supply, AEC-Q101 compliance, and consistent SMB-package logistics.
Supply support for SMB10J40AHE3/5B 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, MOSFETs, and protection devices with emphasis on reliability, precision, and application-specific validation.
The SMB10JxxA series belongs to Vishay's TRANSZORB® TVS platform, engineered specifically for high-power-density transient suppression in automotive, industrial, and communications infrastructure where compact size, AEC-Q101 compliance, and repeatable clamping are mandatory.
FAQ
What is the clamping voltage of SMB10J40AHE3/5B at its rated peak pulse current?
The SMB10J40AHE3/5B 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 ensures protected circuit nodes remain below 65 V during surge events - critical for safeguarding 40 V-rated components and 12 V/24 V automotive electronics. The SMB10J40AHE3/5B maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C).
Is SMB10J40AHE3/5B suitable for automotive applications?
Yes, SMB10J40AHE3/5B is AEC-Q101 qualified and explicitly designated for automotive use with the "HE3" suffix indicating RoHS-compliant and AEC-Q101 qualified construction. It meets stress test requirements including high-temperature operating life, temperature cycling, and ESD robustness. The SMB10J40AHE3/5B is deployed in engine control units, body electronics, and ADAS modules where protection against ISO 7637-2 transients and long-term reliability under thermal cycling are essential.
What is the standoff voltage (VWM) and breakdown voltage range for SMB10J40AHE3/5B?
The SMB10J40AHE3/5B has a maximum working peak reverse voltage (VWM) of 40 V and a breakdown voltage (VBR) range of 44.4 V to 49.1 V at 1 mA test current. This 4.4 V margin between VWM and minimum VBR ensures stable non-conduction during normal operation while guaranteeing rapid, repeatable avalanche turn-on during overvoltage events. The SMB10J40AHE3/5B's tight VBR distribution supports consistent system-level surge response across production lots.
Does SMB10J40AHE3/5B have moisture sensitivity level (MSL) rating?
Yes, SMB10J40AHE3/5B is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life at ≤30 °C/85% RH and requires no baking prior to reflow soldering. This simplifies manufacturing flow for high-volume SMT lines and eliminates moisture-related popcorning risk. The SMB10J40AHE3/5B achieves this via robust molding compound and hermetic glass passivation of the silicon junction - confirmed in Vishay Document Number 88422.
What is the thermal resistance and recommended PCB layout for SMB10J40AHE3/5B?
The SMB10J40AHE3/5B 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 achieve this rating, the PCB must use minimum pad dimensions of 5.59 mm × 2.18 mm per terminal with adequate internal ground/power planes. The SMB10J40AHE3/5B's thermal performance directly impacts its ability to survive repeated surge events - underscoring the need for strict adherence to Vishay's recommended layout in Document 88422.
SMB10J40AHE3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB10J40AHE3/5B FAQ
1.How can I place an order for SMB10J40AHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J40AHE3/5B 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 SMB10J40AHE3/5B reliable?
The price and inventory of SMB10J40AHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J40AHE3/5B is usually 5 days.
3.What payment methods are accepted for SMB10J40AHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J40AHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J40AHE3/5B?
SMB10J40AHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J40AHE3/5B 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 SMB10J40AHE3/5B?
For technical support, including SMB10J40AHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J40AHE3/5B requirements.
6.How does Aetrix verify that SMB10J40AHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMB10J40AHE3/5B 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 SMB10J40AHE3/5B meets industry standards.
7.What is the process for return or replacement of SMB10J40AHE3/5B?
All SMB10J40AHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J40AHE3/5B, 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 SMB10J40AHE3/5B part is unused and in its original packaging.
Return procedure for SMB10J40AHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J40AHE3/5B Tags
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