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Vishay General Semiconductor - Diodes Division 3.0C43CA-M3/H
- Part No.:
- 3.0C43CA-M3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3.0C43CA-M3/H.pdf
- Description:
- 3KW, 43V 5%,BIDIR,SMC TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,088
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Product details
Overview
3.0C43CA-M3/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in SMC (DO-214AB) package, designed for clamping voltage transients on power and signal lines. It features a 43 V standoff voltage (VWM), 47.8–52.8 V breakdown voltage (VBR), 69.4 V max clamping voltage at 43.2 A (10/1000 μs), 3000 W peak pulse power, and operates from –55 °C to +175 °C junction temperature.
For engineers reviewing the 3.0C43CA-M3/H datasheet, 3.0C43CA-M3/H pinout, 3.0C43CA-M3/H application, or 3.0C43CA-M3/H equivalent, this device is selected for robust ESD and surge protection in industrial sensor interfaces, DC power rail conditioning, and telecom line receivers where fast response (<1 ns), low clamping ratio, and MSL Level 1 reflow compatibility are critical.
Technical Context
This TVS diode uses an avalanche-based silicon p-n junction structure optimized for transient suppression with minimal capacitance (typ. 43.2 pF at VWM) and low incremental surge resistance. Its bidirectional configuration enables symmetrical clamping of positive and negative transients without polarity marking, supporting AC-coupled or differential signal paths.
It meets IEC 61000-4-2 ESD immunity up to ±30 kV (contact/air), complies with JESD201 Class 2 whisker resistance, and is halogen-free, RoHS-compliant, and rated for 260 °C peak reflow per J-STD-020 - confirming suitability for high-reliability automated assembly.
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 turn-on within defined tolerance band under transient stress |
| VC @ IPPM | 69.4 V at 43.2 A (10/1000 μs) - clamping voltage limits downstream IC stress during surge events |
| PPPM | 3000 W (10/1000 μs) - supports high-energy transient absorption without failure |
| TJ max | +175 °C - enables operation in under-hood automotive, industrial motor drives, and enclosed power supplies |
| ESD rating | ±30 kV HBM - exceeds IEC 61000-4-2 Level 4 for system-level ESD robustness |
| RthJA | 90 °C/W - defines thermal derating behavior on standard FR4 PCB with 2 oz copper |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional, unmarked polarity, matte tin-plated leads solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (K) | Anode-side terminal in bidirectional configuration | No functional distinction - terminals are symmetric; either end connects to protected line or ground |
| Anode (A) | Cathode-side terminal in bidirectional configuration | Identical electrical role to Cathode; device functions identically regardless of orientation |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals or floating buses without polarity concerns |
| 3000 W peak pulse power | Handles high-energy surges from inductive switching (e.g., relay coils, solenoids) without degradation |
| 69.4 V clamping at 43.2 A | Clamping ratio (VC/VWM) of ~1.61 ensures safe margin below 75 V logic or interface IC absolute max ratings |
| MSL Level 1, 260 °C peak | Supports lead-free reflow without preconditioning or special handling in high-volume SMT lines |
| Halogen-free & RoHS | Meets environmental compliance requirements for industrial, telecom, and consumer end equipment |
Applications
| Industrial Sensor Interface | DC Power Rail Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors exposed to cable discharge and field wiring transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed between signal line and ground to clamp ±kV-level ESD and inductive spikes before reaching ADC input or op-amp buffer. Use Value: Prevents latch-up or permanent damage to precision front-end circuitry while maintaining <1 pF added capacitance impact on signal integrity. | Use Scenario: Safeguarding 48 V DC input rails in programmable logic controllers (PLCs) against load dump and hot-swap surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp parallel to bulk capacitor, activated within <1 ns to limit rail excursion to ≤70 V during 3000 W transients. Use Value: Maintains system uptime by preventing brownout resets or MOSFET gate oxide failure during repetitive 10/1000 μs surges. |
| Telecom Line Receiver | Automotive Body Control Module |
Use Scenario: Shielding RS-485 transceiver inputs connected to outdoor cabling subject to lightning-induced surges. IC Role / Device Role / Timing Role: Secondary protection stage after gas discharge tube (GDT), absorbing residual energy and limiting voltage seen by transceiver ESD diodes. Use Value: Achieves IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge immunity with sub-100 V clamping, preserving data integrity across long runs. | Use Scenario: Protecting LIN bus nodes and LED driver outputs in door modules exposed to battery reverse connection and jump-start transients. IC Role / Device Role / Timing Role: Bidirectional TVS on LIN line and switched 12 V outputs to suppress ±100 V/50 ms pulses per ISO 7637-2 Pulse 1/2a. Use Value: Ensures compliance with automotive EMC requirements while surviving repeated 175 °C junction temperature excursions in sealed enclosures. |
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 | Lower PPPM (600 W), same VWM/VBR range, SMB package (smaller footprint, higher RthJA) | Limited to lower-energy transients; unsuitable for 3000 W 10/1000 μs events | Select only when board space is constrained and surge threat level is ≤600 W |
| SMCJ43CA | Same SMC package, identical VWM/VBR/VC specs, but rated for 1500 W (10/1000 μs) - half the PPPM of 3.0C43CA-M3/H | Insufficient for high-energy industrial switching transients; requires parallel devices for equivalent energy handling | Choose if cost sensitivity outweighs need for single-device 3000 W capability |
Compared with SMBJ43CA and SMCJ43CA, the 3.0C43CA-M3/H delivers 5× and 2× higher peak pulse power respectively in the same SMC footprint, enabling single-component protection against severe inductive load dumps and lightning surges without thermal derating or layout redesign.
Availability
3.0C43CA-M3/H is available at Aetrix Electronics and suitable for industrial sensor interfaces, DC power rail protection, and telecom line receiver designs requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for 3.0C43CA-M3/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, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and ruggedized packaging.
The 3.0C43CA-M3/H belongs to Vishay's TRANSZORB® family of high-power TVS diodes, engineered specifically for industrial, automotive, and telecom systems demanding robust, standardized surge immunity without custom design overhead.
FAQ
What is the clamping voltage of the 3.0C43CA-M3/H under a 10/1000 μs surge?
The 3.0C43CA-M3/H has a maximum clamping voltage (VC) of 69.4 V at 43.2 A under a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees predictable voltage limiting during standardized surge events, ensuring downstream components remain within safe operating limits.
Is the 3.0C43CA-M3/H suitable for automotive applications?
Yes, the 3.0C43CA-M3/H is suitable for automotive body electronics such as LIN bus nodes and LED drivers. Its –55 °C to +175 °C operating junction temperature range, ±30 kV ESD rating, and compliance with ISO 7637-2 Pulse 1/2a test profiles make it appropriate for under-hood and interior modules where thermal and surge resilience are required.
Does the 3.0C43CA-M3/H have polarity markings?
No, the 3.0C43CA-M3/H is a bidirectional TVS diode and carries no polarity marking on its SMC (DO-214AB) package. Both terminals are functionally identical, allowing unrestricted placement on PCBs - critical for protecting AC-coupled or differential signal paths without orientation constraints.
What is the thermal resistance of the 3.0C43CA-M3/H?
The 3.0C43CA-M3/H has a junction-to-ambient thermal resistance (RthJA) of 90 °C/W when mounted on a standard FR4 PCB with 2 oz copper, per JEDEC 51-2A. Its junction-to-mount (RthJM) is 4.0 °C/W, supporting effective heat transfer to heatsink pads or thermal vias in high-power transient scenarios.
How does the 3.0C43CA-M3/H compare to standard 43 V Zener diodes?
Unlike general-purpose Zener diodes, the 3.0C43CA-M3/H is optimized for transient suppression - offering faster response (<1 ns), higher peak pulse power (3000 W vs. typically <5 W), lower dynamic impedance, and guaranteed clamping performance under standardized surge waveforms. It is not intended for voltage regulation but for robust, repeatable overvoltage protection.
3.0C43CA-M3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- 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):
- 43.2A
- Power - Peak Pulse:
- 3000W (3kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
3.0C43CA-M3/H FAQ
1.How can I place an order for 3.0C43CA-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 3.0C43CA-M3/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 3.0C43CA-M3/H reliable?
The price and inventory of 3.0C43CA-M3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3.0C43CA-M3/H is usually 5 days.
3.What payment methods are accepted for 3.0C43CA-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3.0C43CA-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3.0C43CA-M3/H?
3.0C43CA-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3.0C43CA-M3/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 3.0C43CA-M3/H?
For technical support, including 3.0C43CA-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3.0C43CA-M3/H requirements.
6.How does Aetrix verify that 3.0C43CA-M3/H is sourced from the original manufacturer or authorized distributors?
All 3.0C43CA-M3/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 3.0C43CA-M3/H meets industry standards.
7.What is the process for return or replacement of 3.0C43CA-M3/H?
All 3.0C43CA-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with 3.0C43CA-M3/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 3.0C43CA-M3/H part is unused and in its original packaging.
Return procedure for 3.0C43CA-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3.0C43CA-M3/H Tags
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