My Inquiry
My Account
Vishay 6DFN91CA-M3/H
- Part No.:
- 6DFN91CA-M3/H
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- 2-VDFN
- Datasheet:
-
6DFN91CA-M3/H.pdf
- Description:
- 600W,91V 5%, DFN3820A BIDIR TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,979
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
6DFN91CA-M3/H from Vishay General Semiconductor is a bidirectional surface-mount TRANSZORB® transient voltage suppressor in DFN3820A package, featuring 91.0 V nominal breakdown voltage (±5 %), 77.8 V stand-off voltage, 125 V maximum clamping voltage at 4.8 A peak pulse current, and 600 W peak pulse power (10/1000 μs). It protects sensitive signal lines in industrial sensor interfaces against lightning-induced surges and inductive switching transients.
For engineers reviewing the 6DFN91CA-M3/H datasheet, 6DFN91CA-M3/H pinout, 6DFN91CA-M3/H application, or 6DFN91CA-M3/H equivalent, this page delivers verified electrical parameters, thermal resistance values (RθJA = 175 °C/W), ESD immunity (30 kV contact/air), and precise DFN3820A mechanical dimensions for layout and AOI validation.
Technical Context
This device uses anisotropic rectifier technology with junction passivation to achieve stable bidirectional clamping behavior across -65 °C to +175 °C operating range. Its low-profile DFN3820A package features side-wettable flanks for automated optical inspection and solder-joint reliability verification.
It delivers 125 V clamping voltage at 4.8 A IPPM under 10/1000 μs waveform, with <1.0 μA reverse leakage at 77.8 V VWM and 1.0 μA at 150 °C - enabling robust protection in high-temperature industrial environments without compromising signal integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 86.5 V min / 91.0 V nom / 95.5 V max - defines precise voltage threshold where clamping initiates under 1 mA test current |
| Stand-off Voltage VWM | 77.8 V - maximum continuous working voltage before leakage exceeds 1.0 μA, ensuring no false triggering in normal operation |
| Clamping Voltage VC | 125 V at 4.8 A IPPM (10/1000 μs) - limits transient voltage seen by downstream ICs to safe level during surge events |
| Peak Pulse Power | 600 W - sustains high-energy transients without failure, validated per IEC 61000-4-5 surge standards |
| Junction Temperature Range | -65 °C to +175 °C - supports operation in harsh environments including automotive under-hood and industrial motor control enclosures |
| ESD Immunity | 30 kV contact & air discharge per IEC 61000-4-2 - provides system-level electrostatic robustness without external shielding |
| Thermal Resistance RθJA | 175 °C/W - determines temperature rise above ambient at given power dissipation; critical for thermal derating above 25 °C |
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 AOI compatibility and halogen-free, RoHS-compliant matte tin terminations.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | No polarity marking; symmetric terminals enable identical clamping in both directions - simplifies PCB layout and eliminates orientation errors |
| Terminal 2 | Anode/Cathode (bidirectional) | Electrically identical to Terminal 1; forms single-channel bidirectional TVS path across protected line and ground or differential pair |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC-coupled or floating signal lines (e.g., RS-485, CAN, sensor bridges) without polarity constraints |
| Side-wettable flanks | Supports automated optical inspection of solder joints on 2-terminal DFN - critical for high-reliability industrial manufacturing |
| MSL Level 1 rating | Allows unlimited floor life and reflow up to 260 °C peak - eliminates baking requirements and streamlines SMT assembly |
| Low profile (0.88 mm height) | Reduces board stack height in space-constrained modules such as IoT edge sensors and portable medical devices |
| AEC-Q101 qualified (H suffix) | Validated for automotive-grade reliability including HTOL, temperature cycling, and ESD - suitable for ADAS sensor front-ends |
Applications
| Industrial Sensor Signal Protection | Automotive CAN Bus Transient Suppression |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in factory automation PLC I/O modules exposed to relay coil flyback and motor drive noise. IC Role / Device Role / Timing Role: Bidirectional TVS placed between sensor output and ground, clamping fast-rising transients before they reach ADC input or isolation barrier. Use Value: Limits voltage excursion to ≤125 V during 600 W surges, preserving 16-bit measurement accuracy and preventing latch-up in downstream op-amps. |
Use Scenario: Safeguarding CAN_H/CAN_L differential pair in vehicle body control modules subjected to ISO 7637-2 pulse 1/2a/3a and ESD events. IC Role / Device Role / Timing Role: One 6DFN91CA-M3/H per line (CAN_H–GND and CAN_L–GND), leveraging ±5 % VBR tolerance to ensure symmetrical clamping without skew. Use Value: Maintains CAN signal integrity under 30 kV ESD strikes and 100 V/500 ms load dump conditions while meeting AEC-Q101 stress requirements. |
| Telecom Line Interface Protection | Medical Imaging Equipment Surge Guard |
|
Use Scenario: Shielding Ethernet PHY interface lines (e.g., PoE-powered cameras) from lightning-induced surges entering via outdoor cabling. IC Role / Device Role / Timing Role: Placed on each data pair (TX+/TX−, RX+/RX−) referenced to chassis ground, absorbing common-mode transients before magnetics. Use Value: Withstands 10/1000 μs surges up to 600 W and clamps to 125 V - compliant with IEC 61000-4-5 Level 4 (4 kV) when combined with appropriate series impedance. |
Use Scenario: Protecting low-noise analog front-end of ultrasound transducer receive chains from ESD events during probe handling and cable coupling. IC Role / Device Role / Timing Role: Mounted directly at connector entry point on RF-sensitive analog board, minimizing parasitic inductance with DFN3820A's compact footprint. Use Value: Sub-1 μA leakage at 77.8 V ensures no DC offset or noise injection into 100+ dB SNR signal paths; 0.88 mm height avoids interference with stacked flex interconnects. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ90A-E3/5A | DO-214AC (SMA) package; 90 V VBR, 139 V VC at 4.3 A; higher clamping voltage and larger footprint (4.5 × 2.7 mm) | Less suitable for ultra-thin designs; requires manual AOI or X-ray for solder joint inspection due to non-wettable flanks | Select when legacy SMA footprint compatibility or higher surge current margin (5.0 A vs. 4.8 A) is prioritized over board space and AOI capability |
| SMCJ90AHE3/57T | DO-214AB (SMC) package; 90 V VBR, 146 V VC at 4.1 A; 1500 W rating but 7.1 × 6.2 mm size and MSL Level 2 | Used in high-power industrial drives where thermal mass matters more than density; incompatible with fine-pitch automated placement | Choose only if system-level surge testing demands >1000 W rating and board area allows 4× larger footprint than DFN3820A |
Compared with SMAJ90A-E3/5A and SMCJ90AHE3/57T, the 6DFN91CA-M3/H offers superior board-area efficiency (3.95 × 2.18 mm), lower clamping voltage (125 V vs. ≥139 V), and built-in AOI support - making it optimal for next-generation compact, high-reliability sensor and automotive modules.
Availability
6DFN91CA-M3/H is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive CAN bus nodes, telecom line protection, and medical imaging equipment requiring stable component supply with AEC-Q101 qualification and halogen-free compliance.
Supply support for 6DFN91CA-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, efficiency, and miniaturization.
The 6DFN91CA-M3/H belongs to Vishay's TRANSZORB® DFN family, engineered specifically for high-density, high-reliability transient suppression in space-constrained and thermally demanding applications across automotive, industrial, and medical markets.
FAQ
What is the exact breakdown voltage tolerance for 6DFN91CA-M3/H?
The 6DFN91CA-M3/H has a breakdown voltage tolerance of ±5 %, with minimum 86.5 V, nominal 91.0 V, and maximum 95.5 V measured at 1.0 mA test current. This tight tolerance ensures predictable clamping onset across production lots and temperature ranges, critical for protecting voltage-sensitive ICs like precision ADCs or microcontrollers in the 6DFN91CA-M3/H application circuit.
Does 6DFN91CA-M3/H require special reflow profile considerations?
No - the 6DFN91CA-M3/H is rated MSL Level 1 per J-STD-020 and supports peak reflow temperatures up to 260 °C without baking. Its DFN3820A package and matte tin terminations comply fully with J-STD-002 and JESD 22-B102, making the 6DFN91CA-M3/H compatible with standard lead-free reflow profiles used for industrial and automotive PCB assembly.
How does the clamping performance of 6DFN91CA-M3/H compare to older SMA packages?
The 6DFN91CA-M3/H achieves 125 V clamping voltage at 4.8 A (10/1000 μs), which is 14 V lower than SMAJ90A-E3/5A (139 V at 4.3 A). This tighter clamping directly reduces stress on downstream components. The 6DFN91CA-M3/H also exhibits lower parasitic inductance due to its compact DFN3820A layout, improving high-frequency transient response compared to SMA-packaged alternatives.
Is 6DFN91CA-M3/H suitable for bidirectional data lines like RS-485 or CAN?
Yes - the 6DFN91CA-M3/H is explicitly bidirectional with no cathode band and symmetric terminal construction. Its 91.0 V VBR and 125 V VC allow safe placement across differential pairs (e.g., CAN_H–GND and CAN_L–GND) without polarity concerns. This makes the 6DFN91CA-M3/H ideal for protecting high-speed serial buses where signal symmetry and low capacitance are essential.
What is the maximum operating temperature for continuous use of 6DFN91CA-M3/H?
The 6DFN91CA-M3/H supports continuous operation from -65 °C to +175 °C junction temperature. At elevated ambient temperatures, derating applies: for example, at TA = 85 °C, maximum allowable power drops to ~360 W (per Fig. 2 in datasheet 98490). This wide range enables reliable deployment in engine control units, industrial inverters, and downhole sensing tools where the 6DFN91CA-M3/H must survive sustained thermal stress.
6DFN91CA-M3/H 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):
- 77.8V
- Voltage - Breakdown (Min):
- 86.5V
- Voltage - Clamping (Max) @ Ipp:
- 125V
- Current - Peak Pulse (10/1000µs):
- 4.8A
- 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
6DFN91CA-M3/H FAQ
1.How can I place an order for 6DFN91CA-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 6DFN91CA-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 6DFN91CA-M3/H reliable?
The price and inventory of 6DFN91CA-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 6DFN91CA-M3/H is usually 5 days.
3.What payment methods are accepted for 6DFN91CA-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 6DFN91CA-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 6DFN91CA-M3/H?
6DFN91CA-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 6DFN91CA-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 6DFN91CA-M3/H?
For technical support, including 6DFN91CA-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 6DFN91CA-M3/H requirements.
6.How does Aetrix verify that 6DFN91CA-M3/H is sourced from the original manufacturer or authorized distributors?
All 6DFN91CA-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 6DFN91CA-M3/H meets industry standards.
7.What is the process for return or replacement of 6DFN91CA-M3/H?
All 6DFN91CA-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with 6DFN91CA-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 6DFN91CA-M3/H part is unused and in its original packaging.
Return procedure for 6DFN91CA-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
6DFN91CA-M3/H Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
