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Vishay General Semiconductor - Diodes Division SMBJ43CAHE3_B/H
- Part No.:
- SMBJ43CAHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ43CAHE3_B/H.pdf
- Description:
- 600W,43V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:2,017
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Product details
Overview
SMBJ43CAHE3_B/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal or power lines. It features a 43 V stand-off voltage (VWM), 69.4 V maximum clamping voltage (VC) at 8.6 A peak pulse current (IPPM), and 600 W peak pulse power (PPPM) with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor signal lines in industrial and telecom equipment.
For engineers reviewing the SMBJ43CAHE3_B/H datasheet, SMBJ43CAHE3_B/H pinout, SMBJ43CAHE3_B/H application, or SMBJ43CAHE3_B/H equivalent, key selection criteria include bidirectional transient suppression capability, AEC-Q101 qualification status, clamping performance under 10/1000 μs surge, and compatibility with automated SMT assembly on PCBs requiring UL 94 V-0 compliant molding compound.
Technical Context
This device operates as a voltage-clamping protector with symmetrical breakdown behavior in both directions due to its bidirectional construction. Its glass-passivated junction ensures stable avalanche characteristics, while low incremental surge resistance enables consistent clamping across repetitive transients.
The SMBJ43CAHE3_B/H is rated for -55 °C to +150 °C operating junction temperature and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its 100 °C/W junction-to-ambient thermal resistance requires appropriate copper pad layout (0.2" × 0.2") to sustain 600 W pulse dissipation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 43 V - maximum continuous reverse working voltage before clamping initiates |
| VBR min/max | 47.8 V / 52.8 V at 1 mA - verified breakdown threshold range defining conduction onset |
| VC @ IPPM | 69.4 V at 8.6 A - clamped voltage during 10/1000 μs surge, limiting downstream stress |
| PPPM | 600 W - peak transient energy absorption capacity under standardized waveform |
| ID @ VWM | 1.0 μA - ultra-low leakage ensuring minimal standby power impact on protected circuits |
| TJ max | +150 °C - maximum junction temperature supporting operation in high-ambient industrial environments |
| Package | SMB (DO-214AA) - surface-mount outline with 0.205" × 0.130" footprint and matte tin-plated leads |
Pinout & Package
Package: SMB (DO-214AA), molded case with UL 94 V-0 flammability rating; terminals are matte tin plated and solderable per J-STD-002/JESD 22-B102; no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Anode) | Bidirectional terminal | Identical electrical role in both directions; no functional distinction - symmetric clamping path |
| Anode (Cathode) | Bidirectional terminal | Same as above; device functions identically regardless of voltage polarity applied |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Enables robust protection against IEC 61000-4-5 level 4 surges (4 kV/2 Ω) without degradation |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Low profile SMB package | 0.084" height allows dense PCB layouts and compatibility with standard SMT pick-and-place systems |
| Glass passivated junction | Ensures stable, repeatable avalanche characteristics over lifetime and temperature extremes |
| MSL Level 1 rating | Supports lead-free reflow up to 260 °C without moisture-induced failure during assembly |
Applications
| Industrial Motor Control | Automotive Sensor Interface |
|---|---|
|
Use Scenario: Protection of gate drivers and feedback signal lines in variable-frequency drives exposed to inductive switching spikes. IC Role / Device Role / Timing Role: Bidirectional TVS clamps both positive and negative transients induced by IGBT/MOSFET turn-off. Use Value: Limits voltage excursions to ≤69.4 V during 8.6 A surges, preventing latch-up or oxide damage in control ICs. |
Use Scenario: Shielding LIN/CAN physical layer inputs in body control modules from load dump and jump-start events. IC Role / Device Role / Timing Role: Fast-response voltage clamp placed directly at connector entry point before signal conditioning circuitry. Use Value: Responds in <1 ps to suppress >100 V transients while maintaining sub-μA leakage at 43 V nominal bus voltage. |
| Telecom Power Supply Input | Consumer Appliance MCU I/O |
|
Use Scenario: Secondary-side transient suppression on 48 V DC distribution rails feeding PoE-powered equipment. IC Role / Device Role / Timing Role: Standoff-rated protector absorbing line-to-ground surges before DC-DC converter input stage. Use Value: Withstands 600 W pulses without derating at ambient temperatures up to 85 °C when mounted on 5 mm² copper pads. |
Use Scenario: ESD and surge hardening of touch-button and display interface lines in smart home appliances. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) bidirectional clamp minimizing signal distortion on 3.3 V logic lines. Use Value: Delivers 69.4 V clamping at 8.6 A while adding only 1.0 μA leakage - preserving battery life in always-on modes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43CAHM3_B/H | Halogen-free variant with identical electrical specs and AEC-Q101 qualification | Required where RoHS-compliant halogen-free materials are mandated in final product certification | Select when compliance with IEC 61249-2-21 or JEDEC J-STD-020 Annex B is required |
| SMBJ43CA-E3/52 | Commercial-grade (non-AEC-Q101), same SMB package and electrical ratings | Suitable for non-automotive industrial or consumer applications with lower reliability validation requirements | Choose for cost-sensitive designs where automotive qualification is unnecessary |
Compared with SMBJ43CAHE3_B/H, the HM3 variant adds halogen-free compliance without performance trade-offs, while the E3/52 version offers identical clamping and power handling but lacks AEC-Q101 validation - making it appropriate for commercial-grade deployments where extended temperature cycling and accelerated life testing are not mandated.
Availability
SMBJ43CAHE3_B/H is available at Aetrix Electronics and suitable for industrial motor control, automotive sensor interface, and telecom power supply applications requiring stable component supply and AEC-Q101-qualified surge protection.
Supply support for SMBJ43CAHE3_B/H 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, and protection devices with emphasis on reliability and application-specific optimization.
The SMBJ series was developed to deliver high-power transient suppression in compact surface-mount packages for automotive, industrial, and telecom systems demanding AEC-Q101 qualification and repeatable clamping performance.
FAQ
What does the "CA" suffix indicate in SMBJ43CAHE3_B/H?
The "CA" suffix denotes a bidirectional configuration - meaning SMBJ43CAHE3_B/H provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., SMBJ43A), it has no cathode marking and conducts equally in either polarity once the breakdown voltage is exceeded in either direction.
Is SMBJ43CAHE3_B/H suitable for automotive applications?
Yes, SMBJ43CAHE3_B/H is AEC-Q101 qualified, confirming its suitability for automotive use cases including engine control units, body electronics, and ADAS sensor interfaces. The qualification covers temperature cycling, high-temperature reverse bias, and ESD robustness - all validated per the full AEC-Q101 test plan.
What is the maximum clamping voltage of SMBJ43CAHE3_B/H under surge conditions?
The maximum clamping voltage (VC) of SMBJ43CAHE3_B/H is 69.4 V when subjected to an 8.6 A peak pulse current with a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during standardized surge events.
How does the SMBJ43CAHE3_B/H package compare to SMA or SMC variants?
SMBJ43CAHE3_B/H uses the SMB (DO-214AA) package - smaller than SMC (DO-214AB) but larger than SMA (DO-214AC). Its 0.205" × 0.130" footprint and 0.084" height offer higher power handling (600 W) than SMA-rated devices while maintaining compatibility with standard SMT placement equipment and reflow profiles.
Does SMBJ43CAHE3_B/H require heatsinking for normal operation?
No external heatsink is required for single-pulse operation, but sustained or repetitive surges demand adherence to the recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad layout per terminal to maintain thermal resistance at 100 °C/W. Without this layout, junction temperature rise may exceed the 150 °C maximum during high-duty-cycle events.
SMBJ43CAHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Bulk
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ43CAHE3_B/H FAQ
1.How can I place an order for SMBJ43CAHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ43CAHE3_B/H 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 SMBJ43CAHE3_B/H reliable?
The price and inventory of SMBJ43CAHE3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ43CAHE3_B/H is usually 5 days.
3.What payment methods are accepted for SMBJ43CAHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ43CAHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ43CAHE3_B/H?
SMBJ43CAHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ43CAHE3_B/H 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 SMBJ43CAHE3_B/H?
For technical support, including SMBJ43CAHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ43CAHE3_B/H requirements.
6.How does Aetrix verify that SMBJ43CAHE3_B/H is sourced from the original manufacturer or authorized distributors?
All SMBJ43CAHE3_B/H 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 SMBJ43CAHE3_B/H meets industry standards.
7.What is the process for return or replacement of SMBJ43CAHE3_B/H?
All SMBJ43CAHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ43CAHE3_B/H, 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 SMBJ43CAHE3_B/H part is unused and in its original packaging.
Return procedure for SMBJ43CAHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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