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Vishay General Semiconductor - Diodes Division SMB10J40AHE3_A/H
- Part No.:
- SMB10J40AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J40AHE3_A/H.pdf
- Description:
- TVS DIODE 40VWM 64.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,266
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Product details
Overview
SMB10J40AHE3_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, power rails, and MOSFET gates against inductive switching transients.
For engineers reviewing the SMB10J40AHE3_A/H datasheet, SMB10J40AHE3_A/H pinout, SMB10J40AHE3_A/H application, or SMB10J40AHE3_A/H equivalent, key selection criteria include clamping performance under 10/1000 µs surges, AEC-Q101 qualification status, unidirectional polarity, 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 voltage-clamped shunt protector, triggering when reverse voltage exceeds its 44.4–49.1 V breakdown range (VBR at 1 mA). Its glass-passivated junction enables fast response (<1 ns) and low incremental surge resistance, critical for safeguarding sensitive IC inputs during ESD or load-dump events.
Designed for surface-mount use in automotive-grade systems, SMB10J40AHE3_A/H meets MSL Level 1 per J-STD-020 (peak reflow 260 °C), features matte tin-plated leads compliant with J-STD-002, and supports operation from –55 °C to +150 °C junction temperature.
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 - Clamping voltage at 15.5 A peak pulse current; limits downstream voltage stress |
| PPPM | 1000 W - Peak pulse power handling capability with 10/1000 µs waveform, indicating robust surge immunity |
| RθJA | 72 °C/W - Junction-to-ambient thermal resistance; determines required PCB copper area for thermal management |
| IFSM | 100 A - Non-repetitive forward surge current rating (8.3 ms half-sine), relevant for fault-current scenarios |
| Polarity | Unidirectional - Cathode marked by band; blocks forward conduction above ~3.5 V, clamps reverse overvoltage |
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); terminals are matte tin-plated for solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / low-side reference | Connected to ground or lower-potential node; defines direction of clamping path |
| Cathode | Reverse voltage sensing / clamping output | Marked with color band; connected to protected line; conducts when Vline > VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control, ADAS sensors, and body electronics |
| Glass passivated junction | Ensures stable VBR over time and temperature, with reduced leakage drift vs. epoxy-passivated alternatives |
| MSL Level 1 rating | Enables single-reflow assembly without moisture sensitivity concerns (peak 260 °C) |
| Low Rincremental | Minimizes voltage overshoot during fast transients, improving protection margin for 3.3 V/5 V logic interfaces |
| 1000 W PPPM (unidirectional) | Supports IEC 61000-4-5 Level 4 (4 kV/2 Ω) surge compliance with margin on standard PCB layouts |
Applications
| Automotive Sensor Protection | Industrial Power Rail Clamp |
|---|---|
Use Scenario: Protecting LIN bus or analog sensor outputs (e.g., pressure, temperature) in engine bay modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role: Shunt clamp placed between signal line and ground, triggered only during overvoltage events. Use Value: Limits transient voltage to ≤64.5 V, preventing damage to 3.3 V or 5 V ADC inputs and maintaining signal integrity. | Use Scenario: Safeguarding 24 V DC input rails in PLC I/O modules subjected to inductive kickback from solenoid drivers. IC Role / Device Role: Parallel-connected TVS absorbing energy from L·di/dt spikes before reaching downstream regulators. Use Value: Handles 1000 W surges without degradation, enabling compact layout with minimal heatsinking due to low RθJA. |
| Automotive Body Control Unit (BCU) | MOSFET Gate Protection |
Use Scenario: Input protection for microcontroller GPIOs driving LED loads or relays in door module ECUs. IC Role / Device Role: Unidirectional clamp referenced to MCU ground, suppressing negative-going transients from relay coil flyback. Use Value: Fast <1 ns response prevents latch-up in CMOS inputs; AEC-Q101 ensures reliability across 15-year vehicle lifecycle. | Use Scenario: Shielding N-channel MOSFET gate-source terminals from ESD and Miller-induced spikes in motor drive half-bridges. IC Role / Device Role: Low-capacitance (typ. 100 pF at 0 V) shunt device placed directly across gate and source pins. Use Value: Clamps gate voltage to safe levels (<64.5 V) while adding negligible capacitive loading to high-speed PWM signals. |
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 rated for 600 W PPPM (vs. 1000 W) | Limited to lower-energy transients; not suitable for ISO 7637-2 Pulse 5a load dump | Select SMB10J40AHE3_A/H where full 1000 W surge handling is required |
| 1.5SMC40AH | Same VWM and VC, but in larger SMC (DO-214AB) package; RθJA = 30 °C/W | Better thermal performance but requires more PCB area; not AEC-Q101 qualified | Choose 1.5SMC40AH only if higher power derating is needed and automotive qualification is not mandatory |
Compared with SMBJ40AHE3_A/H and 1.5SMC40AH, SMB10J40AHE3_A/H uniquely delivers 1000 W surge capability in an AEC-Q101-qualified SMB package-enabling space-constrained automotive designs that demand both high energy absorption and long-term reliability without board-level thermal compromises.
Availability
SMB10J40AHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial power rail clamping, and MOSFET gate safeguarding requiring stable component supply, AEC-Q101 compliance, and consistent surge performance across production batches.
Supply support for SMB10J40AHE3_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 and automotive-grade validation.
The SMB10J series belongs to Vishay's TRANSZORB® high-power TVS family, engineered specifically for demanding automotive and industrial environments where robust transient immunity and long-term parametric stability are essential.
FAQ
What is the clamping voltage of SMB10J40AHE3_A/H at its rated peak pulse current?
The SMB10J40AHE3_A/H has a maximum clamping voltage (VC) of 64.5 V at its specified peak pulse current (IPPM) of 15.5 A, measured under the standard 10/1000 µs waveform. This value ensures protected circuits remain below critical voltage thresholds during surge events, and it is verified per ANSI/IEEE C62.35 standards. The SMB10J40AHE3_A/H maintains this clamping performance across its qualified operating temperature range.
Is SMB10J40AHE3_A/H suitable for automotive applications?
Yes, SMB10J40AHE3_A/H is AEC-Q101 qualified and explicitly designated for automotive use with the "HE3" suffix, indicating RoHS-compliant and automotive-grade construction. It is validated for under-hood and body electronics applications-including sensor interfaces, BCU modules, and power distribution units-where reliability across –55 °C to +150 °C and resistance to mechanical shock, vibration, and humidity are required. The SMB10J40AHE3_A/H meets MSL Level 1 for lead-free reflow.
What is the difference between SMB10J40AHE3_A/H and SMBJ40AHE3_A/H?
SMB10J40AHE3_A/H delivers 1000 W peak pulse power (PPPM), while SMBJ40AHE3_A/H is rated for 600 W-making the former suitable for higher-energy transients like ISO 7637-2 Pulse 5a load dump. Both share the same VWM (40 V), SMB package, and AEC-Q101 qualification, but SMB10J40AHE3_A/H achieves greater surge capacity via optimized chip geometry and thermal design. The SMB10J40AHE3_A/H also exhibits lower incremental resistance, improving clamping consistency.
Does SMB10J40AHE3_A/H have polarity markings, and how is it oriented on the PCB?
Yes, SMB10J40AHE3_A/H is unidirectional and features a visible cathode band on the package body, aligned with the cathode terminal. During PCB layout, the banded end must connect to the line being protected (e.g., signal or power rail), while the anode connects to ground. This orientation ensures proper clamping action during reverse overvoltage events and prevents forward conduction during normal operation. The SMB10J40AHE3_A/H pinout follows standard DO-214AA polarity conventions confirmed in Vishay's package drawings.
What is the thermal resistance and recommended pad layout for SMB10J40AHE3_A/H?
The SMB10J40AHE3_A/H 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. Vishay specifies this pad size as the minimum for rated power dissipation; reducing pad area increases thermal impedance and reduces surge capability. The SMB10J40AHE3_A/H datasheet provides exact outline dimensions and recommends solder mask defined pads to maximize thermal transfer. No thermal vias are required for standard 1000 W pulse handling under these conditions.
SMB10J40AHE3_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:
- -
- 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_A/H FAQ
1.How can I place an order for SMB10J40AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J40AHE3_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 SMB10J40AHE3_A/H reliable?
The price and inventory of SMB10J40AHE3_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 SMB10J40AHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMB10J40AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J40AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J40AHE3_A/H?
SMB10J40AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J40AHE3_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 SMB10J40AHE3_A/H?
For technical support, including SMB10J40AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J40AHE3_A/H requirements.
6.How does Aetrix verify that SMB10J40AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMB10J40AHE3_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 SMB10J40AHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMB10J40AHE3_A/H?
All SMB10J40AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J40AHE3_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 SMB10J40AHE3_A/H part is unused and in its original packaging.
Return procedure for SMB10J40AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J40AHE3_A/H Tags
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