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Vishay General Semiconductor - Diodes Division SMBG43CAHE3/5B
- Part No.:
- SMBG43CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG43CAHE3/5B.pdf
- Description:
- TVS DIODE 43VWM 69.4VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,232
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Product details
Overview
SMBG43CAHE3/5B from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for robust overvoltage protection of signal and power lines. It features a 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 SMBG43CAHE3/5B datasheet, SMBG43CAHE3/5B pinout, SMBG43CAHE3/5B application, or SMBG43CAHE3/5B equivalent, this device is evaluated for ESD/surge protection in CAN/LIN bus interfaces, sensor signal conditioning circuits, and 12 V automotive power rail inputs where low clamping voltage, fast response (<1 ns), and bidirectional symmetry are critical.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical VBR, IPPM, and VC specifications in forward and reverse directions. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and repeatable clamping performance under repetitive transients.
Designed for surface-mount automated assembly, it meets J-STD-020 MSL Level 1 (peak reflow 260 °C), supports 150 °C maximum junction temperature, and delivers 600 W surge capability with <0.01% duty cycle - validated per ANSI/IEEE C62.35 standards using 10/1000 µs waveform testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 43 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for 12 V automotive systems. |
| VBR (min/max) | 47.8 V / 52.8 V at 1 mA - Confirmed breakdown threshold ensuring predictable turn-on during transients. |
| VC @ IPPM | 69.4 V at 8.6 A - Clamped voltage during 600 W surge; limits downstream IC stress to safe levels. |
| PPPM | 600 W - Peak pulse power handling with 10/1000 µs waveform; suitable for ISO 7637-2 Pulse 1/2/5a/b compliance. |
| ID @ VWM | ≤1.0 µA - Ultra-low leakage preserves signal integrity in high-impedance sensor lines. |
| TJ max | +150 °C - Enables operation in under-hood automotive environments without derating. |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD. |
Pinout & Package
Package: SMBG (DO-215AA) - surface-mount, low-profile (max height 0.030"), gull-wing leads, RoHS-compliant matte tin plating, UL 94 V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Terminal A | Bidirectional conduction path; no polarity marking on device body - symmetrical connection required. |
| Cathode | Terminal K | Bidirectional conduction path; electrically identical to Anode; device functions identically regardless of orientation. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional symmetry | Identical VBR, VC, and IPPM in both directions - eliminates orientation dependency in differential or AC-coupled lines. |
| 600 W surge rating | Validated with 10/1000 µs waveform - withstands automotive load dump and inductive switching events without degradation. |
| AEC-Q101 qualification | Passed HTOL, TCT, and ESD tests - ensures long-term reliability in automotive control units and ADAS sensors. |
| Low clamping ratio | VC/VWM = 1.61 - tight voltage margin enables protection of 48 V tolerant receivers while preserving noise margin. |
| MSL Level 1 | Reflow-compatible up to 260 °C peak - supports standard SMT assembly without moisture sensitivity concerns. |
Applications
| Automotive LIN Bus Protection | Industrial Sensor Signal Lines |
|---|---|
Use Scenario: Protecting LIN transceivers against ESD and coupled transients in body control modules. IC Role / Device Role: Bidirectional clamping element placed between LIN line and ground, directly at connector entry point. Use Value: Limits transient voltage to ≤69.4 V, preventing damage to LIN PHY ICs rated for 40 V absolute maximum, while maintaining <1 µA leakage at 12 V nominal bus voltage. | Use Scenario: Shielding analog outputs of pressure/temperature sensors in PLC I/O modules from field wiring surges. IC Role / Device Role: Low-capacitance (≈100 pF typical) shunt protector on 0–10 V or 4–20 mA output lines. Use Value: Clamps 600 W surges without distorting low-frequency analog signals due to minimal leakage and stable VBR tolerance (±5.2%). |
| 12 V Power Rail Input Protection | Automotive Camera Module ESD Guard |
Use Scenario: Safeguarding DC-DC converter inputs in infotainment head units exposed to battery line transients. IC Role / Device Role: Primary front-end TVS on main 12 V supply rail, upstream of input filter capacitors. Use Value: Absorbs ISO 7637-2 Pulse 5a (100 V/100 ms) energy with 69.4 V clamping, reducing stress on downstream MOSFETs and controllers. | Use Scenario: ESD protection for MIPI CSI-2 data lanes in rear-view camera modules subjected to human-body-model (HBM) discharges. IC Role / Device Role: Bidirectional TVS placed on differential pairs, leveraging symmetry to protect both signal polarities equally. Use Value: Sub-1 ns response time and 69.4 V clamping prevent latch-up in image sensor ICs while meeting IEC 61000-4-2 Level 4 (15 kV air) requirements. |
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-E3/5B | Same VWM/VBR/VC, but lower PPPM = 600 W (same rating), different package: SMB (DO-214AA); slightly larger footprint and higher RθJA (120 °C/W vs. 100 °C/W). | Less suitable for space-constrained automotive modules requiring DO-215AA's smaller pad layout and thermal profile. | Select SMBG43CAHE3/5B when board area or thermal resistance budget is constrained; SMBJ43CA-E3/5B acceptable if legacy SMB footprint exists. |
| SMCJ43CAHE3/5B | Same VWM/VBR, but higher PPPM = 1500 W; larger SMC (DO-214AB) package; higher IPPM (24.3 A) and VC (75.1 V). | Better for high-energy surges (e.g., alternator load dump), but overkill for typical ESD/inductive spikes and increases PCB area cost. | Choose SMBG43CAHE3/5B for optimized balance of size, clamping voltage, and 600 W capability; use SMCJ43CAHE3/5B only when >1 kW surge immunity is mandated. |
Compared with SMBJ43CA-E3/5B and SMCJ43CAHE3/5B, SMBG43CAHE3/5B offers the smallest footprint among 43 V bidirectional TVS diodes with AEC-Q101 qualification, lowest thermal resistance (100 °C/W), and tightest clamping voltage (69.4 V), making it optimal for compact, thermally demanding automotive signal protection.
Availability
SMBG43CAHE3/5B is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and 12 V power rail protection requiring stable component supply, AEC-Q101 compliance, and consistent 600 W surge performance.
Supply support for SMBG43CAHE3/5B 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, automotive qualification, and high-volume manufacturability.
The SMBG series was developed specifically for AEC-Q101-compliant surface-mount transient suppression in automotive and industrial environments where space, thermal performance, and bidirectional symmetry are critical design constraints.
FAQ
What is the clamping voltage of SMBG43CAHE3/5B at its rated peak pulse current?
The SMBG43CAHE3/5B has a maximum clamping voltage (VC) of 69.4 V at its peak pulse current (IPPM) of 8.6 A, measured under the standardized 10/1000 µs waveform condition. This value is confirmed in the Vishay datasheet Document Number 88456, Table "ELECTRICAL CHARACTERISTICS", row for SMBG43CA. The SMBG43CAHE3/5B maintains this clamping performance bidirectionally, ensuring consistent protection for both positive and negative transients.
Is SMBG43CAHE3/5B suitable for automotive applications?
Yes, SMBG43CAHE3/5B is AEC-Q101 qualified, as explicitly stated in the Vishay datasheet (Document Number 88456, page 2, "MECHANICAL DATA" section and page 3, "RATINGS AND CHARACTERISTICS CURVES" note). It is designed for automotive environments with operating junction temperature up to +150 °C, MSL Level 1 reflow compatibility, and validation against HTOL, temperature cycling, and ESD stress. The SMBG43CAHE3/5B is commonly deployed in LIN bus nodes, camera modules, and body control unit power inputs.
How does the SMBG43CAHE3/5B differ from unidirectional variants like SMBG43AHE3/5B?
The SMBG43CAHE3/5B is bidirectional, meaning it provides symmetrical transient suppression for both polarities - essential for AC-coupled or differential signal lines. In contrast, SMBG43AHE3/5B is unidirectional, with a cathode band marking and asymmetric behavior (forward conduction only). The "CA" suffix denotes bidirectional construction; electrical specs such as VBR, VC, and PPPM are identical in magnitude but apply to both directions for SMBG43CAHE3/5B, whereas SMBG43AHE3/5B conducts only in reverse bias.
What is the package type and lead finish of SMBG43CAHE3/5B?
SMBG43CAHE3/5B uses the SMBG (DO-215AA) surface-mount package - a low-profile gull-wing variant with 0.235" × 0.130" footprint and 0.030" max height. Its terminals feature matte tin plating, compliant with J-STD-002 and JESD 22-B102 solderability standards, and pass JESD 201 Class 2 whisker testing. The "HE3" suffix confirms RoHS compliance and AEC-Q101 qualification, while "5B" indicates 13" tape-and-reel packaging (3200 units per reel).
Does SMBG43CAHE3/5B have a specified junction capacitance?
Yes, the SMBG43CAHE3/5B exhibits typical junction capacitance (CJ) of approximately 100 pF at zero bias and 1 MHz, as shown in Figure 4 of the Vishay datasheet (Document Number 88456, page 4). This value is measured under standard conditions (TJ = 25 °C, f = 1.0 MHz, Vsig = 50 mVp-p). While not explicitly listed in the tabular electrical characteristics, the curve confirms capacitance remains stable below 150 pF across the 0–43 V reverse bias range - suitable for protecting low-speed digital and analog sensor lines without signal distortion.
SMBG43CAHE3/5B 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:
- -
- Bidirectional Channels:
- 1
- 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)
SMBG43CAHE3/5B FAQ
1.How can I place an order for SMBG43CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG43CAHE3/5B 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 SMBG43CAHE3/5B reliable?
The price and inventory of SMBG43CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG43CAHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBG43CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG43CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG43CAHE3/5B?
SMBG43CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG43CAHE3/5B 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 SMBG43CAHE3/5B?
For technical support, including SMBG43CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG43CAHE3/5B requirements.
6.How does Aetrix verify that SMBG43CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG43CAHE3/5B 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 SMBG43CAHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBG43CAHE3/5B?
All SMBG43CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG43CAHE3/5B, 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 SMBG43CAHE3/5B part is unused and in its original packaging.
Return procedure for SMBG43CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG43CAHE3/5B Tags
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