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Vishay General Semiconductor - Diodes Division SMBG43AHE3/5B
- Part No.:
- SMBG43AHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG43AHE3/5B.pdf
- Description:
- TVS DIODE 43VWM 69.4VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,702
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Product details
Overview
SMBG43AHE3/5B from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for robust overvoltage protection of sensitive electronics. It features 43 V stand-off voltage (VWM), 47.8–52.8 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 μs), clamping voltage of 69.4 V at 8.6 A, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMBG43AHE3/5B datasheet, SMBG43AHE3/5B pinout, SMBG43AHE3/5B application, or SMBG43AHE3/5B equivalent, key selection criteria include unidirectional polarity, 69.4 V clamping performance under 10/1000 μs surge, thermal resistance (RθJA = 100 °C/W), RoHS-compliant HE3 suffix, and 13" tape-and-reel packaging (5B).
Technical Context
This TVS diode operates as a clamping-type overvoltage protector with fast response time and low incremental surge resistance. Its glass-passivated junction ensures stable breakdown characteristics, while the unidirectional configuration provides forward conduction path only during reverse overvoltage events - critical for protecting IC inputs, MOSFET gates, and sensor signal lines against ESD and inductive switching transients.
The device meets MSL Level 1 per J-STD-020 (reflow peak 260 °C), supports 100 A IFSM (8.3 ms half-sine), and delivers consistent clamping across -55 °C to +150 °C operating junction temperature range. Its 1.0 μA max reverse leakage at VWM minimizes standby power loss in always-on circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 43 V - maximum continuous reverse working voltage before clamping initiates |
| VBR (min/max) | 47.8 V / 52.8 V at 1 mA - guaranteed breakdown threshold defining turn-on precision |
| VC @ IPPM | 69.4 V at 8.6 A - clamping voltage limiting downstream component stress during 10/1000 μs surge |
| PPPM | 600 W - peak pulse power handling capability under standardized transient waveform |
| IFSM | 100 A - non-repetitive forward surge current rating (8.3 ms half-sine), critical for load-dump immunity |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| RθJA | 100 °C/W - thermal resistance from junction to ambient on standard 5.0 mm × 5.0 mm copper pads |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band marking; polarity-critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / reverse voltage reference node | Connected to system ground or low-side return path; defines clamping reference point |
| Cathode | Reverse voltage input / clamping output node | Connected to protected line (e.g., CAN_H, LIN, sensor VOUT); conducts surge current to ground when VREV > VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics requiring high-reliability surge suppression |
| Glass passivated chip junction | Ensures stable VBR tolerance and long-term parameter stability under thermal cycling and humidity |
| 600 W peak pulse power (10/1000 μs) | Withstands ISO 7637-2 Pulse 1, 2a, 3a/b, and IEC 61000-4-5 Level 3 surges without degradation |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture-induced failure risk |
| RoHS-compliant HE3 suffix | Meets industrial and automotive environmental compliance requirements with AEC-Q101 traceability |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp surges above 43 V. Use Value: Limits peak voltage to 69.4 V during 8.6 A transients, preventing damage to downstream LDOs and microcontrollers. | Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in factory automation systems. IC Role / Device Role / Timing Role: Clamping element on sensor VOUT line to absorb ESD and cable discharge events. Use Value: 1.0 μA max leakage at 43 V preserves signal integrity and avoids DC offset errors in precision measurement paths. |
| Automotive LIN Bus Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Shielding LIN transceivers from induced noise and battery coupling in vehicle door modules. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional TVS (cathode grounded) suppressing both positive and negative transients on LIN bus. Use Value: Fast response time and 69.4 V clamping ensure LIN signal integrity remains intact during ISO 16750-2 electrical disturbances. | Use Scenario: Suppressing inductive kickback from brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Snubber-style TVS across motor terminals to divert flyback energy during MOSFET turn-off. Use Value: 100 A IFSM rating handles repetitive 8.3 ms motor commutation spikes without parametric shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBG43AE3/5B | Same electrical specs but lacks AEC-Q101 qualification; base P/N-E3 vs. HE3 | Not approved for automotive use; suitable for industrial/commercial designs without automotive qualification mandates | Select SMBG43AE3/5B only if AEC-Q101 is not required and cost optimization is prioritized. |
| SMAJ43AHE3/A | Different package (SMA/DO-214AC); higher RθJA (150 °C/W); same VWM/VC ratings | Lower power density; less effective thermal dissipation in high-duty-cycle surge environments | Choose SMAJ43AHE3/A only if board layout constraints prevent SMBG footprint usage. |
Compared with SMBG43AHE3/5B, SMBG43AE3/5B offers identical protection performance without automotive qualification, while SMAJ43AHE3/A trades compact SMBG thermal efficiency for larger SMA footprint compatibility - making SMBG43AHE3/5B optimal for space-constrained, thermally demanding automotive and industrial deployments.
Availability
SMBG43AHE3/5B is available at Aetrix Electronics and suitable for automotive power line protection, industrial sensor interface protection, automotive LIN bus protection, and consumer appliance motor drive protection requiring stable component supply and AEC-Q101 assurance.
Supply support for SMBG43AHE3/5B 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, TVS devices, and optoelectronics with emphasis on reliability and application-specific performance.
The SMBG series was engineered for high-power, surface-mount transient suppression in automotive and industrial environments where AEC-Q101 compliance, low-profile packaging, and repeatable clamping behavior are mandatory.
FAQ
What is the clamping voltage of SMBG43AHE3/5B and how is it measured?
The SMBG43AHE3/5B has a maximum clamping voltage (VC) of 69.4 V, measured at a peak pulse current (IPPM) of 8.6 A using a 10/1000 μs double-exponential waveform. This value is specified in the Vishay datasheet (Document Number: 88456) and represents the upper limit of voltage seen by protected circuitry during standardized surge events - critical for validating downstream component voltage margins.
Is SMBG43AHE3/5B suitable for automotive applications?
Yes, SMBG43AHE3/5B is AEC-Q101 qualified and carries the HE3 suffix indicating RoHS compliance plus automotive qualification. It is rated for operation from -55 °C to +150 °C and meets MSL Level 1 reflow requirements, making it appropriate for under-hood and cabin ECU applications including power supply and communication bus protection.
What does the "5B" in SMBG43AHE3/5B indicate?
The "5B" suffix denotes the packaging configuration: 13-inch diameter plastic tape-and-reel with a base quantity of 3200 units per reel. This differs from "52", which indicates 7-inch tape-and-reel (750 units). The "HE3" portion confirms RoHS compliance and AEC-Q101 qualification, distinguishing it from industrial-grade E3 variants.
How does SMBG43AHE3/5B differ from bidirectional TVS diodes like SMBG43CA?
SMBG43AHE3/5B is unidirectional and features polarity-sensitive cathode marking, conducting only in reverse breakdown to clamp positive transients relative to ground. In contrast, SMBG43CA is bidirectional with symmetrical clamping for AC-coupled lines (e.g., USB, RS-485) and no polarity marking - making SMBG43AHE3/5B unsuitable for differential or floating signal protection without external biasing.
What is the thermal resistance of SMBG43AHE3/5B and why does it matter?
SMBG43AHE3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads. This value directly impacts sustained surge handling: lower RθJA allows faster heat dissipation, reducing junction temperature rise during repetitive transients - essential for reliability in automotive and industrial systems with frequent surge exposure.
SMBG43AHE3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-215AA, SMB Gull Wing
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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 (SMBG)
SMBG43AHE3/5B FAQ
1.How can I place an order for SMBG43AHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG43AHE3/5B 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 SMBG43AHE3/5B reliable?
The price and inventory of SMBG43AHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG43AHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBG43AHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG43AHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG43AHE3/5B?
SMBG43AHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG43AHE3/5B 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 SMBG43AHE3/5B?
For technical support, including SMBG43AHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG43AHE3/5B requirements.
6.How does Aetrix verify that SMBG43AHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG43AHE3/5B 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 SMBG43AHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBG43AHE3/5B?
All SMBG43AHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG43AHE3/5B, 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 SMBG43AHE3/5B part is unused and in its original packaging.
Return procedure for SMBG43AHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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