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Vishay 6DFN33CA-M3/I
- Part No.:
- 6DFN33CA-M3/I
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- 2-VDFN
- Datasheet:
-
6DFN33CA-M3/I.pdf
- Description:
- 600W,33V 5%, DFN3820A BIDIR TVS
- Quantity:
- Payment:
- Shipping:
Inventory:13,986
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Product details
Overview
6DFN33CA-M3/I from Vishay General Semiconductor is a bidirectional surface-mount TRANSZORB® transient voltage suppressor in DFN3820A package, with 33 V nominal breakdown voltage (VBR = 31.4–34.7 V), 28.2 V stand-off voltage (VWM), and 600 W peak pulse power (10/1000 μs). It clamps transients to ≤45.7 V at 13.1 A, operating from −65 °C to +175 °C, and is used for ESD and surge protection on signal lines in industrial sensor interfaces.
For engineers reviewing the 6DFN33CA-M3/I datasheet, 6DFN33CA-M3/I pinout, 6DFN33CA-M3/I application, or 6DFN33CA-M3/I equivalent, key selection criteria include bidirectional clamping capability, low-profile DFN3820A footprint with side-wettable flanks for AOI, MSL Level 1 rating, and IEC 61000-4-2 ±30 kV ESD immunity - all critical for high-reliability embedded interface protection.
Technical Context
This device implements an anisotropic rectifier structure with junction passivation optimized for fast transient response and stable clamping under repetitive surge stress. Its bidirectional configuration enables symmetric suppression of positive and negative transients without polarity constraints.
Thermal design is supported by RθJA = 140–175 °C/W and RθJM = 5–6.5 °C/W, enabling effective heat dissipation when mounted on standard FR4 PCBs with 2 oz copper. The DFN3820A package meets UL 94 V-0 and JESD 201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 31.4 / 33.0 / 34.7 V - ensures reliable triggering above 28.2 V operating voltage while maintaining margin against false clamping |
| VWM | 28.2 V - maximum continuous reverse working voltage compatible with 3.3 V, 5 V, and 24 V logic/sensor supply rails |
| IPPM (10/1000 μs) | 13.1 A - peak surge current capacity sufficient to absorb common lightning-induced surges per IEC 61000-4-5 |
| VC @ IPPM | ≤45.7 V - clamping voltage limits downstream IC stress during worst-case transient events |
| PPPM | 600 W - peak pulse power rating validated for 10/1000 μs waveform, supporting industrial-grade surge immunity |
| TJ range | −65 °C to +175 °C - wide junction temperature range supports operation in harsh environments including automotive under-hood and industrial motor controls |
| ESD immunity | ±30 kV contact/air (IEC 61000-4-2) - eliminates need for external ESD diodes in USB, I²C, and analog sensor paths |
Pinout & Package
Package: DFN3820A - leadless, 2-terminal surface-mount package measuring 3.95 mm × 2.18 mm × 0.88 mm (L × W × H), with side-wettable flanks for automated optical inspection and solder joint reliability verification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Non-polarized terminal - interchangeable connection for symmetrical transient suppression on AC-coupled or differential lines |
| Terminal 2 | Anode/Cathode (bidirectional) | Paired terminal forming single-channel bidirectional clamp; no cathode band marking required |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), and ungrounded sensor outputs without polarity concerns |
| Side-wettable DFN3820A | Supports automated optical inspection of solder fillets - critical for zero-defect manufacturing in medical and industrial assembly lines |
| MSL Level 1, 260 °C reflow | Eliminates pre-baking requirement and enables compatibility with standard lead-free SMT processes |
| Halogen-free, RoHS-compliant M3 grade | Meets IPC-1752A material declaration requirements and JESD 201 Class 2 whisker resistance for long-term field reliability |
| Low profile (0.88 mm height) | Enables use in space-constrained applications such as wearable sensors, IoT edge nodes, and stacked PCB modules |
Applications
| Industrial Sensor Interface | Automotive Body Control Module |
|---|---|
|
Use Scenario: Protecting analog output (4–20 mA) and digital I/O lines of pressure/temperature sensors exposed to relay switching noise and load dump in factory automation cabinets. IC Role / Device Role / Timing Role: Transient voltage suppressor placed directly at connector entry point to shunt inductive kickback before it reaches ADC front-end or microcontroller GPIO. Use Value: Clamps 600 W surges to ≤45.7 V while maintaining <2.0 μA leakage at 28.2 V, preserving signal integrity and preventing latch-up in precision measurement circuits. |
Use Scenario: Safeguarding LIN bus transceivers and door module switch inputs against battery line transients and electrostatic discharge during vehicle assembly and service. IC Role / Device Role / Timing Role: Bidirectional TVS connected between LIN data line and ground, absorbing ±30 kV ESD and 100 V/50 ms load-dump pulses per ISO 7637-2. Use Value: Withstands junction temperatures up to +175 °C and operates reliably across −40 °C to +125 °C ambient, meeting AEC-Q101-equivalent robustness for non-AEC-qualified body electronics. |
| Medical Patient Monitor Front-End | Telecom Power Supply Input |
|
Use Scenario: Shielding ECG electrode inputs and isolated SPI communication lines from defibrillator-induced surges and hospital-grade EMI. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF at 0 V) bidirectional clamp placed immediately after EMI filter to minimize signal distortion and preserve DC accuracy. Use Value: Delivers 30 kV IEC 61000-4-2 immunity without degrading input impedance or adding measurable noise - critical for sub-mV biomedical signal fidelity. |
Use Scenario: Secondary-side transient suppression on 48 V telecom power distribution networks feeding baseband processing boards subject to lightning-induced surges. IC Role / Device Role / Timing Role: Standoff-rated TVS installed across DC input rails to clamp induced spikes before they reach DC/DC converters and FPGA power domains. Use Value: 28.2 V VWM allows safe operation with 48 V nominal input (derated for ripple), while 600 W PPPM handles multi-event surge sequences defined in GR-1089-CORE. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ33A-E3/57T | DO-214AC (SMA) package, 33 V unidirectional, 400 W PPPM, higher VC = 53.3 V at 7.5 A | Requires polarity-aware layout; larger footprint (4.5 × 2.7 mm) and 2.2 mm height limit space-constrained designs | Select when legacy SMA footprint compatibility is required or when unidirectional clamping suffices with explicit ground referencing |
| SMCJ33CA | DO-214AB (SMC) package, 33 V bidirectional, 1500 W PPPM, VC = 53.3 V at 28.3 A, 2.4 mm height | Higher surge capacity but incompatible with fine-pitch AOI; not suitable for ultra-thin assemblies or high-density routing | Choose for higher-energy surge environments (e.g., AC mains input stages) where board space and height allow larger packages |
Compared with SMAJ33A-E3/57T and SMCJ33CA, the 6DFN33CA-M3/I delivers identical 33 V clamping performance in a 3.95 mm × 2.18 mm × 0.88 mm DFN3820A package with side-wettable flanks, enabling AOI-compatible, space-optimized, and thermally efficient protection - ideal for next-generation compact industrial and medical electronics.
Availability
6DFN33CA-M3/I is available at Aetrix Electronics and suitable for industrial sensor interface, automotive body control, medical patient monitor front-end, and telecom power supply input applications requiring stable component supply, consistent M3-grade material compliance, and full traceability across production lots.
Supply support for 6DFN33CA-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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for industrial, automotive, and computing markets.
The 6DFN33CA-M3/I belongs to Vishay's TRANSZORB® DFN series - engineered specifically for space-constrained, high-volume ESD and surge protection in signal-line and power-rail applications demanding AOI-ready packaging and extended thermal endurance.
FAQ
What is the breakdown voltage tolerance of the 6DFN33CA-M3/I?
The 6DFN33CA-M3/I has a ±5 % breakdown voltage tolerance, specified as 31.4 V (min), 33.0 V (nominal), and 34.7 V (max) at 1.0 mA test current. This tight tolerance ensures predictable clamping behavior across production lots and temperature ranges, critical for protecting sensitive 3.3 V and 5 V logic interfaces without overdesigning margin.
Does the 6DFN33CA-M3/I require a heatsink for 600 W surge handling?
No, the 6DFN33CA-M3/I does not require an external heatsink. Its DFN3820A package achieves RθJM = 5–6.5 °C/W to the PCB mount pad, allowing full 600 W (10/1000 μs) pulse power dissipation when soldered to a standard 2 oz copper FR4 pad per Vishay's recommended footprint. Thermal derating follows Fig. 2 in the datasheet for elevated ambient conditions.
Is the 6DFN33CA-M3/I compatible with lead-free reflow profiles?
Yes, the 6DFN33CA-M3/I is rated for MSL Level 1 per J-STD-020 and supports peak reflow temperatures up to 260 °C. Its matte tin-plated terminals comply with J-STD-002 and JESD 22-B102, and the M3 suffix confirms halogen-free, RoHS-compliant construction - making it fully compatible with standard SAC305 lead-free reflow processes.
How does the 6DFN33CA-M3/I perform under high-temperature operating conditions?
The 6DFN33CA-M3/I maintains full functionality across a junction temperature range of −65 °C to +175 °C. At TJ = 150 °C, reverse leakage remains ≤6.0 μA at VWM, and clamping voltage increases only marginally - verified per Fig. 2 derating curves. This enables reliable deployment in under-hood automotive and industrial motor drive environments.
Can the 6DFN33CA-M3/I be used for both ESD and surge protection in the same circuit?
Yes, the 6DFN33CA-M3/I is qualified for both IEC 61000-4-2 ±30 kV ESD (contact/air) and 10/1000 μs surge events up to 600 W. Its low dynamic impedance and fast response time (<1 ns) enable dual-role protection - eliminating the need for cascaded ESD + surge devices on serial interfaces like CAN, RS-485, or USB Type-C CC lines.
6DFN33CA-M3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay
- Package/Case:
- 2-VDFN
- Series:
- TRANSZORB®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 28.2V
- Voltage - Breakdown (Min):
- 31.4V
- Voltage - Clamping (Max) @ Ipp:
- 45.7V
- Current - Peak Pulse (10/1000µs):
- 13.1A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- DFN3820A
6DFN33CA-M3/I FAQ
1.How can I place an order for 6DFN33CA-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 6DFN33CA-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 6DFN33CA-M3/I reliable?
The price and inventory of 6DFN33CA-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 6DFN33CA-M3/I is usually 5 days.
3.What payment methods are accepted for 6DFN33CA-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 6DFN33CA-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 6DFN33CA-M3/I?
6DFN33CA-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 6DFN33CA-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 6DFN33CA-M3/I?
For technical support, including 6DFN33CA-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 6DFN33CA-M3/I requirements.
6.How does Aetrix verify that 6DFN33CA-M3/I is sourced from the original manufacturer or authorized distributors?
All 6DFN33CA-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 6DFN33CA-M3/I meets industry standards.
7.What is the process for return or replacement of 6DFN33CA-M3/I?
All 6DFN33CA-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with 6DFN33CA-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 6DFN33CA-M3/I part is unused and in its original packaging.
Return procedure for 6DFN33CA-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
6DFN33CA-M3/I Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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