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Vishay General Semiconductor - Diodes Division SMBG43CHE3/5B
- Part No.:
- SMBG43CHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG43CHE3/5B.pdf
- Description:
- TVS DIODE 43VWM 76.7VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,429
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Product details
Overview
SMBG43CHE3/5B from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-215AA (SMBG) package, designed for clamping voltage transients on signal or power lines. 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), and clamps to ≤69.4 V at 8.6 A peak surge current - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMBG43CHE3/5B datasheet, SMBG43CHE3/5B pinout, SMBG43CHE3/5B application, or SMBG43CHE3/5B equivalent, key selection criteria include bi-directional clamping capability, AEC-Q101 qualification, RoHS-compliant HE3 termination, 150 °C max junction temperature, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a bi-directional avalanche diode, leveraging glass-passivated junction technology to achieve sub-nanosecond response time and low incremental surge resistance. Its symmetrical VBR min/max (47.8 V / 52.8 V) and tight clamping ratio (VC/VBR ≈ 1.37) ensure consistent overvoltage protection in both polarities without polarity marking.
The SMBG43CHE3/5B is rated for 600 W peak pulse power under 10/1000 µs waveform at 0.01% duty cycle, with thermal resistance RθJA = 100 °C/W and RθJL = 20 °C/W. It meets MSL Level 1 per J-STD-020 and passes JESD 201 Class 2 whisker testing due to its HE3 matte tin plating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 43 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR (min/max) | 47.8 V / 52.8 V at 1 mA - defines guaranteed breakdown threshold window for design margining |
| VC @ IPPM | ≤69.4 V at 8.6 A - clamped voltage during 10/1000 µs surge, directly limiting downstream IC stress |
| PPPM | 600 W - peak transient energy absorption capacity under standard lightning-surge waveform |
| TJ max | +150 °C - enables operation in under-hood automotive environments and high-ambient industrial settings |
| Qualification | AEC-Q101 qualified - validated for automotive-grade reliability including temperature cycling and HTRB |
| Package | DO-215AA (SMBG) - surface-mount outline with 0.235–0.255 inch body length and gull-wing leads |
Pinout & Package
DO-215AA (SMBG) package: gull-wing surface-mount outline with two terminals; no polarity marking for bi-directional configuration; mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal per Vishay recommended layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional avalanche junction | No functional distinction - either terminal serves as cathode or anode depending on transient polarity |
| Case (body) | Non-electrical mechanical interface | UL 94 V-0 compliant molding compound; provides thermal path and mechanical anchoring |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-to-line) when properly laid out |
| Glass passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift |
| MSL Level 1 rating | Allows unlimited floor life and reflow up to 260 °C peak - compatible with standard lead-free assembly |
Applications
| Automotive Sensor Protection | Industrial Digital I/O Protection |
|---|---|
Use Scenario: Protecting CAN FD transceiver inputs against load-dump and ISO 7637-2 pulse 5a/b transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bi-directional TVS clamping element placed directly at connector entry point before signal conditioning circuitry. Use Value: Limits induced transients to ≤69.4 V, preserving integrity of 3.3 V/5 V logic interfaces and meeting OEM EMC requirements. |
Use Scenario: Safeguarding PLC digital input modules from field-wiring induced surges in factory automation systems. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V DC input lines interfacing with optocoupler or Schmitt-trigger front-end stages. Use Value: Absorbs 600 W pulses without degradation, enabling >100,000 surge cycles per MIL-STD-883H Method 3015.8. |
| Telecom Line Interface | Consumer USB Port ESD Protection |
Use Scenario: Shielding RS-485 transceivers in base station backhaul links from lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Differential pair clamp between A/B lines and ground, leveraging symmetrical bi-directional behavior. Use Value: Maintains signal integrity up to 10 Mbps while suppressing ±1 kV contact ESD per IEC 61000-4-2. |
Use Scenario: Secondary-level surge suppression on USB 2.0 VBUS and D+/D− lines in smart home hubs. IC Role / Device Role / Timing Role: Back-up clamping device after primary polymer-based PTC, handling residual high-energy transients. Use Value: Clamps 10/1000 µs surges to <70 V, preventing latch-up in USB PHY ICs rated for 5.5 V absolute max. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43CA | Same VWM (43 V) and PPPM (600 W), but SMBJ package (DO-214AA); higher RθJA (110 °C/W) vs. SMBG's 100 °C/W | Less efficient thermal dissipation in high-density layouts; not AEC-Q101 qualified | Select SMBG43CHE3/5B when automotive qualification or tighter thermal performance is required |
| SMCJ43CA | Higher PPPM (1500 W), larger SMC (DO-214AB) package; VWM identical but clamping voltage higher (≤72.7 V) | Overkill for PCB space-constrained designs; suited for higher-energy surge zones like power entry | Choose SMBG43CHE3/5B where board area is limited and 600 W suffices - e.g., signal-level protection |
Compared with SMBJ43CA and SMCJ43CA, the SMBG43CHE3/5B offers optimal balance of AEC-Q101 compliance, compact DO-215AA footprint, and verified 600 W clamping performance - making it preferred for space- and reliability-critical automotive and industrial signal-line protection.
Availability
SMBG43CHE3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom RS-485 ports, and consumer USB power/data line protection requiring stable component supply across production lifecycles.
Supply support for SMBG43CHE3/5B 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 and automotive-grade validation.
The SMBG series was developed specifically for high-reliability surface-mount transient suppression in space-constrained automotive and industrial environments, combining AEC-Q101 qualification with optimized thermal and surge performance in the DO-215AA outline.
FAQ
What is the polarity configuration of SMBG43CHE3/5B?
The SMBG43CHE3/5B is a bi-directional TVS diode with symmetrical avalanche characteristics - neither terminal is marked, and either can serve as anode or cathode depending on transient polarity. This eliminates orientation errors during automated placement and simplifies layout for AC-coupled or floating circuits.
Does SMBG43CHE3/5B meet automotive qualification standards?
Yes, SMBG43CHE3/5B carries the HE3 suffix indicating AEC-Q101 qualification. It has passed stress tests including temperature cycling, high-temperature reverse bias (HTRB), and accelerated moisture resistance - confirming suitability for under-hood and chassis-mounted automotive electronics.
What is the maximum clamping voltage for SMBG43CHE3/5B under surge conditions?
The SMBG43CHE3/5B clamps to a maximum of 69.4 V at its rated peak pulse current of 8.6 A (10/1000 µs waveform). This value is guaranteed across temperature and process variation, ensuring predictable protection margin for downstream 5 V or 3.3 V ICs.
How does the DO-215AA (SMBG) package compare thermally to DO-214AA (SMBJ)?
The DO-215AA package used by SMBG43CHE3/5B achieves RθJA = 100 °C/W, 10 °C/W lower than the DO-214AA (SMBJ) package's typical 110 °C/W. This 10% improvement supports higher sustained surge repetition rates or operation in elevated ambient temperatures without derating.
Is SMBG43CHE3/5B compatible with lead-free reflow processes?
Yes, SMBG43CHE3/5B is rated for MSL Level 1 per J-STD-020 and supports peak reflow temperatures up to 260 °C. Its matte tin (Sn) terminations comply with J-STD-002 and JESD 22-B102, and the HE3 variant meets JESD 201 Class 2 whisker resistance.
SMBG43CHE3/5B 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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 43V
- Voltage - Breakdown (Min):
- 47.8V
- Voltage - Clamping (Max) @ Ipp:
- 76.7V
- Current - Peak Pulse (10/1000µs):
- 7.8A
- 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)
SMBG43CHE3/5B FAQ
1.How can I place an order for SMBG43CHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG43CHE3/5B 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 SMBG43CHE3/5B reliable?
The price and inventory of SMBG43CHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG43CHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBG43CHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG43CHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG43CHE3/5B?
SMBG43CHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG43CHE3/5B 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 SMBG43CHE3/5B?
For technical support, including SMBG43CHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG43CHE3/5B requirements.
6.How does Aetrix verify that SMBG43CHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG43CHE3/5B 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 SMBG43CHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBG43CHE3/5B?
All SMBG43CHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG43CHE3/5B, 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 SMBG43CHE3/5B part is unused and in its original packaging.
Return procedure for SMBG43CHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG43CHE3/5B Tags
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