My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBG43A-E3/52
- Part No.:
- SMBG43A-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG43A-E3/52.pdf
- Description:
- TVS DIODE 43VWM 69.4VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,711
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBG43A-E3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMBG (DO-215AA) package, rated for 43 V stand-off voltage, 47.8–52.8 V breakdown at 1 mA, 69.4 V clamping voltage at 8.6 A peak pulse current, and 600 W peak pulse power with 10/1000 μs waveform-designed to protect automotive sensor signal lines against inductive switching transients.
For engineers reviewing the SMBG43A-E3/52 datasheet, SMBG43A-E3/52 pinout, SMBG43A-E3/52 application, or SMBG43A-E3/52 equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 150 °C max junction temperature, low incremental surge resistance, and compatibility with automated SMT placement on industrial and automotive PCBs.
Technical Context
This TVS diode operates as a clamping device in reverse-biased configuration, triggering when transient voltage exceeds its breakdown threshold (VBR = 47.8–52.8 V), then limiting downstream voltage to ≤69.4 V at 8.6 A. Its glass-passivated junction ensures stable leakage (<1.0 μA at 43 V) and fast response time (<1 ns).
Thermal performance is defined by RθJA = 100 °C/W (on 5.0 mm × 5.0 mm copper pads) and maximum junction temperature of 150 °C. It meets J-STD-020 MSL Level 1 and supports reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 43 V - Maximum continuous reverse operating voltage before conduction begins; defines safe working range for protected circuit. |
| VBR @ IT = 1 mA | 47.8–52.8 V - Measured breakdown voltage range; ensures reliable turn-on above system nominal voltage with margin. |
| VC @ IPPM = 8.6 A | 69.4 V - Clamped voltage during 10/1000 μs surge; determines maximum stress imposed on downstream ICs. |
| PPPM | 600 W - Peak pulse power handling capability; enables robust protection against ISO 7637-2 Pulse 1/2a/5a transients. |
| IFSM | 100 A - Non-repetitive forward surge rating (8.3 ms half-sine); supports fault-current tolerance in power-line coupling scenarios. |
| Junction Temp Range | −55 to +150 °C - Enables deployment in under-hood automotive environments and industrial enclosures without derating. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, low-profile gull-wing leadframe with matte tin-plated terminals solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band marking on case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to ground or low-side reference in unidirectional TVS configuration. | Provides return path during clamping; must be routed to low-impedance ground plane to minimize VCLAMP overshoot. |
| Cathode | Current exit terminal in forward bias; connected to protected line (e.g., CAN_H, LIN, sensor output). | Acts as high-impedance node until transient exceeds VBR; band marking identifies this terminal for correct PCB orientation. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables suppression of high-energy transients common in 12 V automotive systems without thermal runaway. |
| Glass passivated chip junction | Ensures long-term stability of VBR and leakage current across temperature and humidity stress conditions. |
| AEC-Q101 qualified | Validates suitability for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free reflow assembly without moisture-induced damage or parametric shift. |
| Low profile SMBG package | Reduces board space vs. SMA/SMB while maintaining mechanical robustness and thermal pad access for heatsinking. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, or position sensors in engine bay modules exposed to load-dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between sensor output and microcontroller ADC input. Use Value: Limits transient voltage to ≤69.4 V, preventing latch-up or gate oxide damage in 3.3 V/5 V signal chain components. | Use Scenario: Shielding digital input channels of programmable logic controllers from field-wiring surges in factory automation cabinets. IC Role / Device Role / Timing Role: Standoff protection element on 24 V DC input lines upstream of optocoupler or Schmitt trigger interface. Use Value: Withstands repetitive 600 W pulses per IEC 61000-4-5 Combination Wave test while maintaining <1.0 μA leakage at 43 V. |
| Automotive LIN Bus Protection | Power Supply Rail Clamp |
Use Scenario: Safeguarding LIN transceiver pins against battery reversal and load dump events in door module ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS tied between LIN bus line and chassis ground, with cathode on LIN line. Use Value: Fast sub-nanosecond response ensures clamping occurs before LIN physical layer IC sustains overvoltage stress. | Use Scenario: Secondary overvoltage clamp on regulated 5 V supply rail feeding safety-critical MCU peripherals. IC Role / Device Role / Timing Role: Backup protection stage after primary DC/DC converter, triggered only during regulator failure or external injection. Use Value: 69.4 V clamping voltage provides >10 V headroom above 5 V rail, allowing time for system shutdown before damage occurs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43A-E3/52 | Same VWM (43 V), identical SMB package, but lower PPPM = 600 W (same rating), slightly higher VC = 69.7 V at 8.6 A. | Functionally interchangeable in most 12 V automotive circuits; differs only in minor clamping variance (±0.3 V). | Select SMBJ43A-E3/52 if legacy design uses SMBJ footprint and no layout change is permitted. |
| SMCJ43A-E3/52 | Same electrical specs but larger SMC (DO-214AB) package; RθJA = 35 °C/W vs. 100 °C/W, enabling higher sustained surge duty cycles. | Better suited for high-repetition surge environments (e.g., motor drive feedback lines), but requires larger PCB area. | Choose SMCJ43A-E3/52 when thermal management is critical and board space allows SMC footprint. |
Compared with SMBG43A-E3/52, SMBJ43A-E3/52 offers identical protection performance in a functionally equivalent package, while SMCJ43A-E3/52 trades compactness for superior thermal dissipation-making SMBG43A-E3/52 optimal for space-constrained AEC-Q101-compliant designs where 600 W single-pulse capability suffices.
Availability
SMBG43A-E3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and LIN bus protection requiring stable component supply, AEC-Q101 compliance, and RoHS-conformant packaging.
Supply support for SMBG43A-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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, precision, and automotive-grade qualification.
The SMBG Transient Voltage Suppressor family targets high-reliability surface-mount surge protection in automotive, industrial, and telecom systems-designed specifically to meet stringent AEC-Q101, UL 497B, and IEC 61000-4-5 requirements.
FAQ
What is the clamping voltage of SMBG43A-E3/52 at its rated peak pulse current?
The SMBG43A-E3/52 has a maximum clamping voltage (VC) of 69.4 V when subjected to its rated peak pulse current of 8.6 A using a 10/1000 μs waveform. This value is measured per standard test conditions in the Vishay datasheet (Document Number: 88456) and defines the upper voltage limit imposed on protected circuitry during transient events. The SMBG43A-E3/52 maintains this clamping performance across its full operating temperature range.
Is SMBG43A-E3/52 qualified for automotive applications?
Yes, SMBG43A-E3/52 is AEC-Q101 qualified, as confirmed in the Vishay datasheet (Revision: 09-Jan-2024, Document Number: 88456). This qualification covers stress tests including temperature cycling, high-temperature reverse bias, and ESD, validating its use in automotive subsystems such as body control modules, sensor interfaces, and LIN/CAN node protection. The SMBG43A-E3/52 carries the HE3 suffix variant for explicit AEC-Q101 compliance, and the E3/52 version shares the same die and qualification baseline.
What is the standoff voltage and breakdown voltage range for SMBG43A-E3/52?
The SMBG43A-E3/52 has a reverse stand-off voltage (VWM) of 43 V and a breakdown voltage (VBR) range of 47.8 V to 52.8 V at 1 mA test current. These parameters ensure the device remains non-conductive during normal operation while reliably triggering during overvoltage events. The SMBG43A-E3/52's VBR window provides sufficient margin above VWM to prevent false triggering due to ripple or tolerance stack-up in 12 V automotive systems.
Does SMBG43A-E3/52 have a bidirectional variant?
No, SMBG43A-E3/52 is a unidirectional TVS diode. Bidirectional variants in the same SMBG family use the "CA" suffix (e.g., SMBG43CA), which provide symmetrical clamping in both polarities. The SMBG43A-E3/52 features a cathode band marking and is intended for applications where transients occur only on the positive side relative to ground-such as protecting signal lines referenced to chassis or power ground in automotive and industrial systems.
What package type does SMBG43A-E3/52 use and what are its mounting requirements?
SMBG43A-E3/52 uses the SMBG (DO-215AA) surface-mount package-a low-profile gull-wing leadframe with dimensions of 4.57 mm × 3.94 mm × 2.10 mm. Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal for rated thermal performance (RθJA = 100 °C/W). The SMBG43A-E3/52 is compatible with J-STD-020 MSL Level 1 and supports peak reflow temperatures up to 260 °C.
SMBG43A-E3/52 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG43A-E3/52 FAQ
1.How can I place an order for SMBG43A-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG43A-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 SMBG43A-E3/52 reliable?
The price and inventory of SMBG43A-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 SMBG43A-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBG43A-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG43A-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG43A-E3/52?
SMBG43A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG43A-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 SMBG43A-E3/52?
For technical support, including SMBG43A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG43A-E3/52 requirements.
6.How does Aetrix verify that SMBG43A-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG43A-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 SMBG43A-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBG43A-E3/52?
All SMBG43A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG43A-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 SMBG43A-E3/52 part is unused and in its original packaging.
Return procedure for SMBG43A-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG43A-E3/52 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
