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Vishay General Semiconductor - Diodes Division SMBJ43CHE3/52
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- Part No.:
- SMBJ43CHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ43CHE3/52.pdf
- Description:
- TVS DIODE 43VWM 76.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,424
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Product details
Overview
SMBJ43CHE3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 43 V stand-off voltage (VWM), 47.8–52.8 V breakdown range (VBR at 1 mA), 69.4 V maximum clamping voltage (VC) at 8.6 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive ECUs, industrial sensor interfaces, and telecom power supplies.
For engineers reviewing the SMBJ43CHE3/52 datasheet, SMBJ43CHE3/52 pinout, SMBJ43CHE3/52 application, or SMBJ43CHE3/52 equivalent, key selection criteria include its AEC-Q101 qualification, low clamping ratio (VC/VBR ≈ 1.45), 1.0 µA max reverse leakage at VWM, and compatibility with automated SMT placement on standard PCB pad layouts per JEDEC DO-214AA footprint.
Technical Context
This unidirectional TVS operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 MΩ) below 43 V; during transients exceeding VBR, it avalanches rapidly (<1 ns response) to divert surge current away from downstream ICs. Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability under repetitive surges.
The device is rated for 100 A non-repetitive forward surge (8.3 ms half-sine), supports continuous power dissipation of 5.0 W at 50 °C ambient, and maintains operation across -55 °C to +150 °C junction temperature - enabled by low thermal resistance (RθJL = 20 °C/W) and MSL Level 1 moisture sensitivity rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 43 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC rail margin for 48 V systems. |
| VBR (min/max) | 47.8 V / 52.8 V at 1 mA - Confirmed breakdown threshold range; ensures reliable triggering above system nominal voltage. |
| VC @ IPPM | 69.4 V at 8.6 A - Clamped voltage during 10/1000 µs surge; limits stress on protected MOSFETs or microcontrollers. |
| PPPM | 600 W - Peak pulse power handling capacity; sustains IEC 61000-4-5 Level 4 (4 kV) surge events without degradation. |
| IFSM | 100 A - Single half-sine surge rating (8.3 ms); supports motor drive or relay coil switching transients. |
| TJ max | +150 °C - Maximum junction temperature; enables use in under-hood automotive environments with minimal derating. |
| Package | SMB (DO-214AA) - Standard surface-mount outline with 5.59 mm × 4.06 mm footprint; compatible with IPC-7351B land pattern. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; cathode indicated by band marking on one end. Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal for rated power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to circuit ground or return path; completes clamping loop during transient events. |
| Cathode | Protected line input | Connected to line being protected (e.g., 48 V supply rail); avalanche conduction occurs from cathode to anode. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS power domains. |
| 600 W peak pulse power | Withstands IEC 61000-4-5 surge waveforms up to 4 kV without parametric shift or failure. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage overshoot during clamping, reducing risk of latch-up in protected logic devices. |
| MSL Level 1, 260 °C reflow compatible | Enables single-pass lead-free reflow assembly without preconditioning or moisture sensitivity concerns. |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage drift over 15+ years in industrial temperature cycling. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: 48 V battery-supplied ECU power input subjected to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Shunt clamping element placed between VBAT and GND to clamp transients above 43 V. Use Value: Limits voltage seen by downstream DC/DC converters and microcontrollers to ≤69.4 V during 100 V/100 ms load dump events. |
Use Scenario: RS-485 communication line in factory automation exposed to ESD and inductive switching noise. IC Role / Device Role / Timing Role: Bidirectional protection not applicable; SMBJ43CHE3/52 used on VCC supply side only for unidirectional rail clamping. Use Value: Prevents damage to isolated RS-485 transceivers during 4 kV contact ESD events by clamping supply rail excursions. |
| Telecom DC Power Input | Motor Drive Gate Driver Supply |
|
Use Scenario: -48 V telecom rectifier output feeding backplane distribution with lightning-induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS connected anode-to-ground on positive output rail to suppress positive-going transients. Use Value: Maintains system uptime by absorbing 600 W surges without degradation, meeting GR-1089-CORE Level 3 requirements. |
Use Scenario: 15 V gate driver supply for 600 V IGBTs in HVAC inverter, subject to Miller-induced voltage spikes. IC Role / Device Role / Timing Role: Clamping diode on gate driver VDD rail to prevent overvoltage damage to level-shifters and drivers. Use Value: Clamps gate supply to ≤69.4 V during 100 ns dv/dt events, avoiding false turn-on or oxide breakdown in driver ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43AHE3/52 | Same electrical specs and AEC-Q101 qualification; differs only in packaging suffix (HE3 vs HE3) - identical device. | No functional difference; both intended for automotive-grade production. | Select SMBJ43CHE3/52 when ordering from authorized Vishay distribution channels using standard part numbering convention. |
| SMCJ43AHE3/52 | Higher 1500 W PPPM, same VWM/VC, but larger SMC (DO-214AB) package - 7.11 mm × 6.22 mm vs 5.59 mm × 4.06 mm. | Used where higher surge energy absorption is required and board space allows larger footprint. | Choose SMBJ43CHE3/52 for space-constrained designs needing 600 W protection; select SMCJ43AHE3/52 only if >1 kV surge immunity is mandated. |
Compared with SMBJ43AHE3/52 (identical spec variant) and SMCJ43AHE3/52 (higher-power, larger-package alternative), SMBJ43CHE3/52 delivers optimal balance of AEC-Q101 compliance, 600 W surge capability, and compact SMB footprint - making it the preferred choice for automotive and industrial PCBs with tight layout constraints.
Availability
SMBJ43CHE3/52 is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom power supplies, and motor drive gate driver circuits requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBJ43CHE3/52 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade qualification.
The SMBJ series is engineered for high-reliability transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where consistent clamping performance and AEC-Q101 validation are mandatory.
FAQ
What is the breakdown voltage range for SMBJ43CHE3/52?
The SMBJ43CHE3/52 has a guaranteed breakdown voltage (VBR) range of 47.8 V to 52.8 V at 1 mA test current, measured per ANSI/IEEE C62.35 standards. This range ensures reliable triggering above its 43 V stand-off voltage while accommodating manufacturing tolerances - critical for designing robust overvoltage margins in 48 V systems where SMBJ43CHE3/52 is commonly applied.
Is SMBJ43CHE3/52 suitable for automotive applications?
Yes, SMBJ43CHE3/52 is AEC-Q101 qualified and explicitly designated for automotive use with ordering code suffix "HE3". It meets stringent requirements for temperature cycling (-55 °C to +150 °C), humidity resistance, and surge endurance - validated for deployment in engine control units, body control modules, and ADAS power domains where SMBJ43CHE3/52 provides certified transient protection.
What is the maximum clamping voltage of SMBJ43CHE3/52 during a surge event?
The SMBJ43CHE3/52 exhibits a maximum clamping voltage (VC) of 69.4 V at 8.6 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during transient events - enabling designers to verify that downstream components like microcontrollers or gate drivers remain within their absolute maximum ratings when SMBJ43CHE3/52 is deployed.
Does SMBJ43CHE3/52 have a bidirectional version?
No, SMBJ43CHE3/52 is a unidirectional TVS diode, identified by the "A" suffix and cathode band marking. For bidirectional protection at the same voltage rating, Vishay offers SMBJ43CA (or SMBJ43CHE3/52's bidirectional counterpart SMBJ43CHE3/52 is not manufactured; correct alternate is SMBJ43CHE3/52's family member SMBJ43CAHE3/52). The unidirectional nature of SMBJ43CHE3/52 makes it ideal for DC rail clamping where polarity is fixed and reverse conduction must be blocked.
What package type does SMBJ43CHE3/52 use and what are its mounting requirements?
SMBJ43CHE3/52 uses the SMB (DO-214AA) surface-mount package measuring 5.59 mm × 4.06 mm, with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. For rated 600 W pulse power, it requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal - a requirement directly specified in the Vishay datasheet to ensure thermal performance and mechanical reliability when SMBJ43CHE3/52 is soldered into production PCBs.
SMBJ43CHE3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- 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 (SMBJ)
SMBJ43CHE3/52 FAQ
1.How can I place an order for SMBJ43CHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ43CHE3/52 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 SMBJ43CHE3/52 reliable?
The price and inventory of SMBJ43CHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ43CHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ43CHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ43CHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ43CHE3/52?
SMBJ43CHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ43CHE3/52 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 SMBJ43CHE3/52?
For technical support, including SMBJ43CHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ43CHE3/52 requirements.
6.How does Aetrix verify that SMBJ43CHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ43CHE3/52 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 SMBJ43CHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ43CHE3/52?
All SMBJ43CHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ43CHE3/52, 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 SMBJ43CHE3/52 part is unused and in its original packaging.
Return procedure for SMBJ43CHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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