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Vishay General Semiconductor - Diodes Division SMBJ43AHE3_A/H
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- Part No.:
- SMBJ43AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ43AHE3_A/H.pdf
- Description:
- TVS DIODE 43VWM 69.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,007
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Product details
Overview
SMBJ43AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 43 V stand-off voltage (VWM), 47.8–52.8 V breakdown voltage (VBR) at 1 mA, 69.4 V maximum clamping voltage (VC) at 8.6 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 µs waveform), used for protecting MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the SMBJ43AHE3_A/H datasheet, SMBJ43AHE3_A/H pinout, SMBJ43AHE3_A/H application, or SMBJ43AHE3_A/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), junction temperature range (−55 to +150 °C), and compliance with UL 497B surge protector classification.
Technical Context
This TVS diode operates as a clamping device in parallel with protected circuitry, entering avalanche conduction when reverse voltage exceeds VBR. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while the low incremental surge resistance enables effective energy diversion during fast transients.
The SMBJ43AHE3_A/H is rated for 600 W peak pulse power under standardized 10/1000 µs waveform conditions, with derating above 25 °C per Fig. 2. It meets MSL Level 1 per J-STD-020, supports reflow soldering up to 260 °C peak, and carries UL recognition QVGQ2 under file E136766 for both uni- and bidirectional variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 43 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working limit. |
| VBR min/max | 47.8 V / 52.8 V at IT = 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on across production lot. |
| VC @ IPPM | 69.4 V at 8.6 A - Clamped voltage during 10/1000 µs surge; determines maximum stress imposed on downstream components. |
| PPPM | 600 W - Peak transient power handling capability; validates suitability for IEC 61000-4-5 Level 3/4 surge immunity. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs heatsinking requirements. |
| TJ max | +150 °C - Maximum allowable junction temperature; sets upper limit for ambient + self-heating in continuous operation. |
| Polarity | Unidirectional - Cathode marked by band; blocks forward current beyond VF ≈ 3.5 V at 50 A, conducts only in reverse avalanche. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated leads, RoHS-compliant and AEC-Q101 qualified (HE3 suffix). Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H), cathode band denotes terminal 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient clamp anode connection | Connected to protected line; avalanche conduction occurs when line voltage exceeds VBR relative to ground. |
| Anode | Reference/ground return path | Typically tied to system ground or low-impedance return; completes clamping loop during surge events. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Validates robustness against IEC 61000-4-5 surges up to ±2 kV (line-earth) without degradation. |
| AEC-Q101 qualified (HE3 suffix) | Confirms reliability for automotive powertrain and body electronics applications requiring extended temperature cycling and humidity testing. |
| UL 497B recognized (QVGQ2, E136766) | Enables direct use in telecom and industrial equipment requiring certified surge protection per safety standards. |
| Low profile SMB package | Enables high-density PCB layouts and compatibility with automated SMT assembly processes including reflow up to 260 °C. |
| 1.0 µA max reverse leakage at VWM | Minimizes standby power loss in battery-backed or low-power sensor circuits where quiescent current matters. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of gate drivers and logic inputs against inductive kickback from relay coils and solenoid loads. IC Role / Device Role / Timing Role: Unidirectional TVS placed across MOSFET gate-source or driver output to clamp negative transients below −0.7 V and positive spikes above VWM. Use Value: Prevents latch-up or oxide damage in 3.3 V/5 V logic interfaces while maintaining <1.0 µA leakage at 43 V standby. |
Use Scenario: Surge suppression on LIN bus lines and power supply rails in door modules, seat controllers, and lighting ECUs. IC Role / Device Role / Timing Role: Standoff-rated clamping element on 12 V supply input, triggered only during load dump or ISO 7637-2 Pulse 5a events. Use Value: Survives 150 °C junction temperature excursions and passes AEC-Q101 stress tests required for under-hood deployment. |
| Telecom Power Supply Inputs | Industrial Sensor Signal Conditioning |
Use Scenario: Input-stage protection for AC/DC adapters and PoE injectors exposed to lightning-induced surges on primary-side rectifier outputs. IC Role / Device Role / Timing Role: Primary-side TVS shunting transients between bulk capacitor and bridge rectifier output, clamping within 1 ns response time. Use Value: Limits clamped voltage to 69.4 V during 8.6 A surge, preserving 100 V-rated electrolytic capacitors and secondary-side isolation barriers. |
Use Scenario: Protection of analog front-end inputs (e.g., 4–20 mA loops, thermocouple amplifiers) against ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance (typ. <100 pF) unidirectional clamp on signal line referenced to local ground, minimizing signal distortion. Use Value: Delivers <1.0 µA leakage at 43 V, ensuring sub-µV offset drift in precision instrumentation amplifiers over temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43AHM3_A/H | Halogen-free, RoHS-compliant variant with identical electrical specs and AEC-Q101 qualification. | No functional difference; selected when halogen-free material compliance is mandated by OEM environmental policy. | Direct substitution if halogen-free bill-of-materials is required; same footprint, thermal, and clamping behavior. |
| SMCJ43AHE3_A/H | Same VWM/VBR/VC ratings but in larger SMC (DO-214AB) package; higher RθJA (60 °C/W) and 1500 W PPPM rating. | Used where higher surge margin or improved thermal dissipation is needed, e.g., mains-connected equipment with frequent surges. | Choose when 600 W is insufficient; requires PCB layout change due to larger 7.11 mm × 6.22 mm footprint. |
Compared with SMBJ43AHE3_A/H, SMBJ43AHM3_A/H offers identical protection performance with halogen-free construction, while SMCJ43AHE3_A/H provides 2.5× higher surge power handling at the cost of increased board area and different thermal management.
Availability
SMBJ43AHE3_A/H is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, telecom power supply inputs, and industrial sensor signal conditioning requiring stable component supply and AEC-Q101 traceability.
Supply support for SMBJ43AHE3_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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series is engineered for high-reliability transient suppression in harsh environments-designed to meet automotive, industrial, and telecom surge immunity standards while supporting automated manufacturing and long-term supply stability.
FAQ
What is the clamping voltage of SMBJ43AHE3_A/H at its rated peak pulse current?
The SMBJ43AHE3_A/H has a maximum clamping voltage (VC) of 69.4 V at its rated peak pulse current (IPPM) of 8.6 A under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ43AHE3_A/H maintains this clamping performance across its full operating temperature range of −55 °C to +150 °C.
Is SMBJ43AHE3_A/H qualified for automotive applications?
Yes, SMBJ43AHE3_A/H is AEC-Q101 qualified, as indicated by the "HE3" suffix in its ordering code. This qualification confirms it has passed stress tests including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing-making it suitable for automotive body electronics, infotainment power rails, and non-safety-critical control modules. The SMBJ43AHE3_A/H is not intended for airbag or braking systems unless explicitly validated by the end customer.
What is the reverse leakage current specification for SMBJ43AHE3_A/H at its stand-off voltage?
The SMBJ43AHE3_A/H specifies a maximum reverse leakage current (ID) of 1.0 µA at its 43 V stand-off voltage (VWM), tested at TA = 25 °C. This low leakage ensures minimal power loss in always-on circuits such as battery-backed sensors or standby power monitors. Leakage remains within specification up to +125 °C, with typical values well below 500 nA at room temperature, directly supporting precision analog and low-power IoT designs.
Does SMBJ43AHE3_A/H have UL recognition, and what does that mean for system certification?
Yes, SMBJ43AHE3_A/H carries UL recognition under file E136766 and classification QVGQ2 per UL 497B for surge protective devices. This means the component itself has been evaluated and listed as compliant with safety requirements for transient voltage suppression-reducing the burden on end-equipment manufacturers during system-level UL listing. The SMBJ43AHE3_A/H may be used in final products without requiring additional component-level investigation, provided layout and application follow Vishay's recommended practices.
How does the SMBJ43AHE3_A/H package compare to SMA or SMC in terms of power handling and board space?
The SMBJ43AHE3_A/H uses the SMB (DO-214AA) package-smaller than SMC (DO-214AB) but larger than SMA (DO-214AC)-measuring 4.57 mm × 3.94 mm. It delivers 600 W peak pulse power, versus 400 W for SMA-based equivalents and 1500 W for SMCJ variants. The SMBJ43AHE3_A/H strikes a balance: sufficient surge margin for most industrial and automotive applications while conserving PCB area and enabling high-density placement. Its RθJA of 100 °C/W reflects this trade-off, requiring appropriate copper pour for sustained surge duty cycles.
SMBJ43AHE3_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):
- 43V
- Voltage - Breakdown (Min):
- 47.8V
- Voltage - Clamping (Max) @ Ipp:
- 69.4V
- Current - Peak Pulse (10/1000µs):
- 8.6A
- Power - Peak Pulse:
- 600W
- 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 (SMBJ)
SMBJ43AHE3_A/H FAQ
1.How can I place an order for SMBJ43AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ43AHE3_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 SMBJ43AHE3_A/H reliable?
The price and inventory of SMBJ43AHE3_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 SMBJ43AHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMBJ43AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ43AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ43AHE3_A/H?
SMBJ43AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ43AHE3_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 SMBJ43AHE3_A/H?
For technical support, including SMBJ43AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ43AHE3_A/H requirements.
6.How does Aetrix verify that SMBJ43AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMBJ43AHE3_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 SMBJ43AHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMBJ43AHE3_A/H?
All SMBJ43AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ43AHE3_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 SMBJ43AHE3_A/H part is unused and in its original packaging.
Return procedure for SMBJ43AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ43AHE3_A/H Tags
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