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Vishay 3.0C85CA-M3/I
- Part No.:
- 3.0C85CA-M3/I
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3.0C85CA-M3/I.pdf
- Description:
- 3KW, 85V 5%,BIDIR,SMC TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,500
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Product details
Overview
3.0C85CA-M3/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection with 3000 W peak pulse power (10/1000 μs), 137 V maximum clamping voltage at 21.9 A, and 94.4–104 V breakdown voltage range. It protects MOSFETs, ICs, and sensor signal lines in industrial power supplies and telecom interfaces.
For engineers reviewing the 3.0C85CA-M3/I datasheet, 3.0C85CA-M3/I pinout, 3.0C85CA-M3/I application, or 3.0C85CA-M3/I equivalent, this page delivers verified electrical specs, clamping behavior under 10/1000 μs and 8/20 μs transients, thermal resistance values (RthJA = 90 °C/W), ESD immunity (30 kV HBM), and SMC package mechanical data - all critical for robust overvoltage design validation.
Technical Context
This TVS operates as a voltage-clamped shunt protector triggered by reverse-biased avalanche breakdown. Its bidirectional structure enables symmetrical clamping on both polarities without external polarity management, supporting AC-coupled or floating signal paths. The device sustains 175 °C max junction temperature and meets J-STD-020 MSL Level 1 with 260 °C reflow peak.
Clamping performance is defined across two standardized surge waveforms: 10/1000 μs (IEC 61000-4-5 compliant) and 8/20 μs (lightning surge). At rated 3000 W (10/1000 μs), it delivers 137 V clamping at 21.9 A, while under 8/20 μs stress it clamps to 177 V at 169 A - enabling system-level transient suppression in DC power rails and analog front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 94.4 V / 104 V - ensures reliable turn-on above 85 V stand-off without false triggering during normal operation |
| VWM | 85 V - maximum continuous reverse voltage the device blocks without leakage exceeding 1.0 μA |
| VC @ IPPM (10/1000 μs) | 137 V at 21.9 A - limits downstream voltage stress during 3000 W surges to safe levels for 85 V-rated circuits |
| VC @ IPPM (8/20 μs) | 177 V at 169 A - provides lightning-surge resilience with lower energy but higher peak current capability |
| PPPM | 3000 W - supports sustained transient energy absorption per IEC 61000-4-5 Level 4 compliance |
| TJ max | +175 °C - enables operation in high-temperature environments including enclosed industrial enclosures |
| RthJA | 90 °C/W - defines thermal derating on standard FR4 PCB; requires heatsinking for >1 W steady-state dissipation |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads, MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (marked end) | Surge current sink node | Connected to protected line; conducts avalanche current during overvoltage events |
| Anode | Reference/return path | Connected to ground or common reference; completes clamping path for bidirectional transients |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals or floating buses without polarity constraints |
| 30 kV HBM ESD rating | Meets IEC 61000-4-2 contact/air discharge requirements without additional ESD stages |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns response time) |
| UL 94 V-0 molding compound | Ensures flame-retardant enclosure integrity in safety-critical industrial and telecom equipment |
| JESD 201 Class 2 whisker resistance | Guarantees long-term reliability under thermal cycling and humidity exposure |
Applications
| Industrial Motor Drives | Telecom Power Interfaces |
|---|---|
Use Scenario: Protection of gate drivers and bus voltage sensing circuits against inductive kickback from IGBT/MOSFET switching. IC Role / Device Role / Timing Role: Shunt TVS placed across DC bus or gate-source terminals to clamp voltage spikes before they reach sensitive control ICs. Use Value: Limits transient voltage to ≤137 V during 21.9 A surges, preserving gate oxide integrity and preventing false triggering of protection logic. | Use Scenario: Surge suppression on -48 V DC power inputs in base station power distribution units. IC Role / Device Role / Timing Role: Primary overvoltage clamp on telecom rectifier outputs subjected to lightning-induced 8/20 μs surges. Use Value: Clamps to 177 V at 169 A, maintaining downstream DC-DC converter input within safe operating range per GR-1089-CORE. |
| Automotive Body Control Modules | Industrial Sensor Signal Conditioning |
Use Scenario: Protection of LIN/CAN transceiver power pins against load dump and jump-start transients. IC Role / Device Role / Timing Role: Bidirectional TVS connected between VCC and GND to absorb ISO 7637-2 Pulse 5a/b energy. Use Value: Withstands 175 °C junction temperature and delivers 3000 W clamping without degradation in under-hood environments. | Use Scenario: Shielding analog outputs (e.g., 4–20 mA loops) from EFT and surge coupling in factory automation sensors. IC Role / Device Role / Timing Role: Low-leakage (≤1.0 μA at 85 V) shunt protector placed across output terminals. Use Value: Maintains signal accuracy with <1.0 μA reverse leakage while clamping transients to ≤137 V at 21.9 A. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ85CA-E3/52 | Lower peak pulse power (600 W), same 85 V VWM, SMB package (smaller footprint, higher RthJA) | Suitable for space-constrained consumer electronics; insufficient for 3000 W industrial surges | Select only when surge energy is ≤600 W and board area is critical |
| 1.5KE85CA | Through-hole DO-201 package, identical VWM/VC specs, but slower thermal response and no MSL-1 rating | Applicable where manual assembly or legacy through-hole layouts persist | Choose when automated SMT is unavailable or reflow compatibility is not required |
Compared with SMBJ85CA-E3/52 and 1.5KE85CA, the 3.0C85CA-M3/I uniquely combines 3000 W surge capacity, SMC surface-mount reliability, MSL Level 1 reflow compatibility, and 30 kV ESD immunity - making it optimal for high-reliability industrial and telecom designs requiring robust, automated assembly-ready protection.
Availability
3.0C85CA-M3/I is available at Aetrix Electronics and suitable for industrial motor drives, telecom power interfaces, automotive body control modules, and industrial sensor signal conditioning requiring stable component supply and full traceability.
Supply support for 3.0C85CA-M3/I 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 high-reliability, high-power, and automotive-grade performance.
The 3.0CxxCA-M3 series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in harsh-environment power electronics, meeting IEC 61000-4-5 and ISO 7637-2 standards.
FAQ
What is the breakdown voltage range of the 3.0C85CA-M3/I?
The 3.0C85CA-M3/I has a guaranteed breakdown voltage (VBR) range of 94.4 V to 104 V at 1.0 mA test current, measured per ANSI/IEEE C62.35. This ensures consistent avalanche initiation above its 85 V stand-off voltage while accommodating process variation - critical for predictable clamping onset in 85 V rail protection.
Does the 3.0C85CA-M3/I support automated SMT assembly?
Yes, the 3.0C85CA-M3/I uses an SMC (DO-214AB) package qualified to J-STD-020 MSL Level 1 with a maximum peak reflow temperature of 260 °C. Its matte tin-plated leads comply with J-STD-002 and JESD 22-B102 solderability standards, ensuring reliable reflow yield in high-volume automated assembly lines.
What is the maximum clamping voltage of the 3.0C85CA-M3/I under an 8/20 μs surge?
Under an 8/20 μs lightning surge waveform, the 3.0C85CA-M3/I clamps to a maximum of 177 V at a peak pulse current of 169 A. This value is specified in the Vishay datasheet (Document Number 98266, Rev. 09-Jan-2024) and reflects its ability to limit voltage stress during high-current, short-duration transients typical in telecom infrastructure.
Is the 3.0C85CA-M3/I bidirectional or unidirectional?
The 3.0C85CA-M3/I is a bidirectional TVS diode, indicated by the "CA" suffix in its part number and confirmed in the Vishay datasheet. It provides symmetrical clamping for both positive and negative transients without polarity marking on the case - ideal for protecting AC-coupled lines or floating references.
What is the thermal resistance from junction to ambient (RthJA) for the 3.0C85CA-M3/I?
The 3.0C85CA-M3/I has a typical junction-to-ambient thermal resistance (RthJA) of 90 °C/W when mounted on a standard FR4 PCB per JEDEC 51-2A. This value assumes a 2 oz. copper footprint and is essential for calculating safe power derating above 25 °C ambient temperature.
3.0C85CA-M3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay
- Package/Case:
- DO-214AB, SMC
- Series:
- TRANSZORB®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 85V
- Voltage - Breakdown (Min):
- 94.4V
- Voltage - Clamping (Max) @ Ipp:
- 137V
- Current - Peak Pulse (10/1000µs):
- 21.9A
- Power - Peak Pulse:
- 3000W (3kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
3.0C85CA-M3/I FAQ
1.How can I place an order for 3.0C85CA-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 3.0C85CA-M3/I 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 3.0C85CA-M3/I reliable?
The price and inventory of 3.0C85CA-M3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3.0C85CA-M3/I is usually 5 days.
3.What payment methods are accepted for 3.0C85CA-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3.0C85CA-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3.0C85CA-M3/I?
3.0C85CA-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3.0C85CA-M3/I 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 3.0C85CA-M3/I?
For technical support, including 3.0C85CA-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3.0C85CA-M3/I requirements.
6.How does Aetrix verify that 3.0C85CA-M3/I is sourced from the original manufacturer or authorized distributors?
All 3.0C85CA-M3/I 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 3.0C85CA-M3/I meets industry standards.
7.What is the process for return or replacement of 3.0C85CA-M3/I?
All 3.0C85CA-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with 3.0C85CA-M3/I, 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 3.0C85CA-M3/I part is unused and in its original packaging.
Return procedure for 3.0C85CA-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3.0C85CA-M3/I Tags
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