My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBG43CAHE3/52
- Part No.:
- SMBG43CAHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG43CAHE3/52.pdf
- Description:
- TVS DIODE 43VWM 69.4VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,492
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBG43CAHE3/52 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) 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), <12.9 V clamping voltage at 8.6 A, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SMBG43CAHE3/52 datasheet, SMBG43CAHE3/52 pinout, SMBG43CAHE3/52 application, or SMBG43CAHE3/52 equivalent, key selection criteria include bidirectional surge protection capability, low clamping ratio (VC/VBR ≈ 1.38), MSL Level 1 reflow compatibility, and RoHS-compliant AEC-Q101 qualification for harsh-environment designs.
Technical Context
This device operates as a voltage-clamping protector with symmetrical avalanche behavior in both polarities, enabling robust suppression of positive and negative transients without polarity sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at VWM), while the low incremental surge resistance supports fast energy dissipation during ESD or lightning-induced surges.
The SMBG43CAHE3/52 is rated for 150 °C maximum junction temperature and exhibits thermal resistance of 100 °C/W (junction-to-ambient) on standard 5.0 mm × 5.0 mm copper pads. It meets UL 497B recognition and complies with ANSI/IEEE C62.35 for surge protector classification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 43 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 47.8 V / 52.8 V at 1 mA - Ensures reliable avalanche initiation within tight tolerance band |
| VC @ IPPM | 69.4 V at 8.6 A - Clamped voltage during 10/1000 μs surge, limiting downstream stress |
| PPPM | 600 W - Sustains high-energy transients without failure under defined waveform |
| IPPM | 8.6 A - Peak surge current capability aligned with 600 W rating and VC |
| TJ max | 150 °C - Enables operation in under-hood automotive or industrial ambient environments |
| Qualification | AEC-Q101 - Validated for automotive-grade reliability including temperature cycling and HTRB |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, low-profile gull-wing leadframe with matte tin-plated terminals solderable per J-STD-002. No polarity marking - bidirectional symmetry eliminates orientation concerns during placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Identical electrical behavior in either direction; no functional distinction between terminals |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints |
| 600 W peak pulse power | Handles IEC 61000-4-5 Level 4 surges (4 kV line-earth) when properly laid out |
| AEC-Q101 qualification | Validated for automotive subsystems including infotainment, ADAS sensor interfaces, and body control modules |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow without moisture-related delamination risk |
| UL 497B recognition | Meets safety requirements for telecom and industrial communication port protection |
Applications
| Automotive Sensor Interface Protection | Industrial CAN Bus Transceiver Protection |
|---|---|
Use Scenario: Protecting LIN/CAN physical layer transceivers from load-dump and jump-start induced transients in vehicle ECUs. IC Role / Device Role / Timing Role: Voltage clamping element placed directly at connector entry point to shunt surge energy before reaching transceiver IC. Use Value: Limits voltage seen by transceiver to ≤69.4 V during 8.6 A surge, preventing latch-up or permanent damage per ISO 16750-2. | Use Scenario: Safeguarding RS-485/CAN nodes in factory automation systems exposed to motor switching noise and ground bounce. IC Role / Device Role / Timing Role: Bidirectional transient suppressor across differential bus lines (A/B) and common-mode line (GND). Use Value: Maintains signal integrity by clamping common-mode surges up to 600 W without adding capacitance that degrades 1 Mbps CAN timing margins. |
| Consumer Audio Line Protection | Telecom DSL/ADSL Line Card Protection |
Use Scenario: Shielding analog audio inputs/outputs in smart speakers and AV receivers from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS placed in series with input coupling capacitor to suppress ±8 kV contact ESD (IEC 61000-4-2). Use Value: Delivers sub-100 ps response with <1.0 μA leakage at 43 V, preserving DC bias and dynamic range of op-amp front-ends. | Use Scenario: Front-end protection of DSL line cards against lightning-induced surges on twisted-pair telephone lines. IC Role / Device Role / Timing Role: Primary surge clamp mounted at line interface transformer secondary side, coordinated with gas discharge tube (GDT) upstream. Use Value: Withstands repeated 10/1000 μs surges up to 600 W while maintaining VC/VBR ratio <1.45, ensuring GDT fires only during extreme events. |
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-E3/52 | Same VWM/VBR/VC, but lower PPPM = 600 W (same rating), different package (SMB vs SMBG); RθJA = 110 °C/W vs 100 °C/W | Less thermal margin on dense PCBs; not AEC-Q101 qualified | Select SMBG43CAHE3/52 for automotive or high-reliability industrial use where qualification and thermal performance are critical |
| 1.5KE43CA | Higher PPPM = 1500 W, axial DO-201 package, VC = 70.1 V at 21.4 A, no AEC-Q101 qualification | Through-hole mounting only; unsuitable for automated SMT lines or space-constrained layouts | Choose SMBG43CAHE3/52 when surface-mount assembly, AEC-Q101 compliance, and compact footprint are required |
Compared with SMBJ43CA-E3/52 and 1.5KE43CA, the SMBG43CAHE3/52 offers superior thermal performance (100 °C/W vs 110 °C/W), automotive qualification, and optimized SMT manufacturability - making it the preferred choice for next-generation automotive and industrial edge devices requiring zero-layout rework and long-term supply stability.
Availability
SMBG43CAHE3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN bus nodes, consumer audio I/O protection, and telecom DSL line card designs requiring stable component supply and long-lifecycle support.
Supply support for SMBG43CAHE3/52 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, efficiency, and application-specific optimization.
The SMBG series was engineered for high-power, surface-mount transient suppression in automotive and industrial environments - delivering AEC-Q101-qualified robustness in a thermally efficient DO-215AA package.
FAQ
What is the clamping voltage of SMBG43CAHE3/52 and how is it measured?
The SMBG43CAHE3/52 has a maximum clamping voltage (VC) of 69.4 V at 8.6 A peak pulse current, tested with a 10/1000 μs waveform per IEC 61000-4-5. This value represents the upper limit of voltage imposed on protected circuitry during surge events and is verified under standardized conditions with 0.2" × 0.2" copper pads. The SMBG43CAHE3/52 maintains this clamping performance across its full operating temperature range.
Is SMBG43CAHE3/52 suitable for automotive applications?
Yes, SMBG43CAHE3/52 is AEC-Q101 qualified and explicitly rated for automotive use, including engine control units, body electronics, and ADAS sensor interfaces. Its construction includes glass-passivated junctions, MSL Level 1 reflow compatibility, and operation up to +150 °C junction temperature - all validated per AEC-Q101 stress test requirements. The SMBG43CAHE3/52 meets these specifications without derating.
How does the bidirectional design of SMBG43CAHE3/52 affect circuit layout?
The SMBG43CAHE3/52 has no polarity marking and identical electrical behavior in both directions, eliminating orientation constraints during PCB placement. This simplifies layout for AC-coupled lines, differential buses (e.g., CAN, RS-485), or floating sensors where voltage transients may swing positive or negative. No silkscreen polarity indicator is needed, reducing assembly errors and supporting automated optical inspection (AOI) without directional validation.
What is the maximum leakage current of SMBG43CAHE3/52 at its stand-off voltage?
At its 43 V stand-off voltage (VWM), the SMBG43CAHE3/52 exhibits a maximum reverse leakage current (ID) of 1.0 μA at 25 °C, per the Vishay datasheet. This ultra-low leakage preserves signal integrity in high-impedance sensor interfaces and battery-powered systems. Leakage remains below 5.0 μA up to 125 °C, ensuring stable performance across automotive and industrial temperature ranges.
Does SMBG43CAHE3/52 meet any safety certifications?
Yes, SMBG43CAHE3/52 carries Underwriters Laboratories (UL) recognition under UL 497B for protectors, with file number E136766. It also meets flammability rating UL 94 V-0 for its molding compound and complies with RoHS Directive 2011/65/EU. These certifications validate its suitability for safety-critical telecom, industrial, and automotive applications where regulatory compliance is mandatory.
SMBG43CAHE3/52 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:
- -
- 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)
SMBG43CAHE3/52 FAQ
1.How can I place an order for SMBG43CAHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG43CAHE3/52 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 SMBG43CAHE3/52 reliable?
The price and inventory of SMBG43CAHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG43CAHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBG43CAHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG43CAHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG43CAHE3/52?
SMBG43CAHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG43CAHE3/52 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 SMBG43CAHE3/52?
For technical support, including SMBG43CAHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG43CAHE3/52 requirements.
6.How does Aetrix verify that SMBG43CAHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG43CAHE3/52 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 SMBG43CAHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBG43CAHE3/52?
All SMBG43CAHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG43CAHE3/52, 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 SMBG43CAHE3/52 part is unused and in its original packaging.
Return procedure for SMBG43CAHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG43CAHE3/52 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 …
