My Inquiry
My Account
Diodes Incorporated DESD35VF1BL-7B
- Part No.:
- DESD35VF1BL-7B
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- 0402 (1006 Metric)
- Datasheet:
-
DESD35VF1BL-7B.pdf
- Description:
- DATALINE PROTECTION PP X1-DFN100
- Quantity:
- Payment:
- Shipping:
Inventory:9,144
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
DESD35VF1BL-7B from Diodes Incorporated is a bidirectional TVS diode designed for ultra-low-capacitance ESD protection of high-speed data lines. It features a 35V reverse working voltage, 36V minimum breakdown voltage at 1mA, 0.3pF typical junction capacitance at 0V/1MHz, ±14kV IEC 61000-4-2 contact/air discharge rating, and 1A peak pulse current (8/20µs). It is deployed in USB 2.0, HDMI, and audio jack interfaces of smartphones and portable media players.
For engineers reviewing the DESD35VF1BL-7B datasheet, DESD35VF1BL-7B pinout, DESD35VF1BL-7B application, or DESD35VF1BL-7B equivalent, key selection criteria include clamping voltage under 1A surge (20V), dynamic resistance (0.65Ω), thermal resistance (500°C/W), low-profile X1-DFN1006-2 package, and compliance with IEC 61000-4-2 Level 4 ESD immunity.
Technical Context
This TVS diode operates as a voltage-clamped transient suppressor across signal lines, activating when transient voltage exceeds its 36V breakdown threshold. Its bidirectional structure enables symmetric clamping for AC-coupled or differential interfaces without polarity constraints.
The device uses silicon avalanche technology to achieve sub-nanosecond response time and maintains <0.45pF maximum capacitance to avoid signal integrity degradation on 480Mbps USB 2.0 or 1.65Gbps HDMI 1.4a channels. Its 250mW power dissipation rating and 500°C/W junction-to-ambient thermal resistance are validated on standard FR-4 PCB with 2oz copper.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 35V - Maximum continuous reverse operating voltage before leakage exceeds 30nA |
| VBR (min) | 36V @ 1mA - Ensures reliable turn-on before downstream IC damage thresholds |
| VCL2 | 20V @ 1A, 8/20µs - Clamps transients to safe levels for 3.3V/5V interface ICs |
| CT (typ) | 0.3pF @ 0V, 1MHz - Enables use on >480Mbps USB 2.0 data pairs without insertion loss |
| ESD Rating | ±14kV contact/air per IEC 61000-4-2 - Meets Level 4 system-level ESD immunity |
| PD | 250mW - Sustains short-duration surges without thermal runaway on standard PCB layout |
Pinout & Package
Package: X1-DFN1006-2 - 0.53mm max height, 1.08mm × 0.68mm footprint, NiPdAu-plated copper leadframe, RoHS-compliant green molding compound (UL 94V-0).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Connects to protected signal line; forms one side of bidirectional clamping path |
| 2 | Cathode | Connects to protected signal line; completes symmetrical clamping structure with Pin 1 |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low capacitance | 0.3pF typical enables ESD protection on high-speed USB 2.0 and audio differential pairs without signal distortion |
| IEC 61000-4-2 Level 4 compliance | ±14kV contact/air rating ensures robustness against real-world human-body ESD events in handheld devices |
| Low-profile DFN package | 0.53mm max height allows integration into space-constrained smartphone bezels and thin tablet edge connectors |
| Lead-free & halogen-free | Meets RoHS 3 (2015/863/EU) and "Green" definition (<900ppm Br/Cl, <1000ppm Sb) for global environmental compliance |
Applications
| USB 2.0 Data Lines | HDMI Interface Protection |
|---|---|
Use Scenario: ESD protection for D+ and D− pins of USB 2.0 ports in smartphones and OTG adapters. IC Role / Device Role / Timing Role: Bidirectional clamping TVS placed directly at connector to shunt transients before reaching USB transceiver IC. Use Value: 0.3pF capacitance avoids signal rise-time degradation, preserving 480Mbps data integrity while meeting IEC 61000-4-2 Level 4. | Use Scenario: Transient suppression on TMDS clock and data channels of HDMI 1.4a ports in portable monitors and docking stations. IC Role / Device Role / Timing Role: Low-capacitance TVS mounted adjacent to HDMI receptacle to clamp ESD without affecting 1.65Gbps eye diagram. Use Value: 20V clamping voltage at 1A limits stress on HDMI PHY inputs rated for 3.3V operation. |
| Smartphone Audio Jacks | Portable Media Player Buttons |
Use Scenario: ESD protection for microphone and headset detection lines in 3.5mm TRRS jacks. IC Role / Device Role / Timing Role: Single-channel TVS placed inline between jack switch contacts and codec GPIOs to prevent latch-up during plug insertion. Use Value: 36V breakdown ensures no conduction during normal 2.8V bias, while ±14kV rating handles repeated pocket discharge events. | Use Scenario: Surge protection for mechanical button traces exposed on front bezel of MP3 players and fitness trackers. IC Role / Device Role / Timing Role: TVS connected between button pad and microcontroller input to absorb finger-touch ESD before MCU input protection diodes activate. Use Value: 1A peak pulse rating sustains multiple 15kV discharges without parameter shift, verified per JESD22-A114. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional low-capacitance TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J33A-Q | Unidirectional, 33V VRWM, 55V VBR min, 15pF CT - higher capacitance, different polarity behavior | Requires redesign for unidirectional biasing; unsuitable for AC-coupled or differential lines | Select only if circuit uses DC-biased single-ended signals and can tolerate >50× higher capacitance |
| SP1003-01UTG | Bidirectional, 3.3V VRWM, 5.5V VBR min, 0.3pF CT - lower voltage rating, same capacitance | Limited to 3.3V logic rails; cannot protect 5V or 12V analog/audio paths | Use only for low-voltage digital I/O; not interchangeable for 35V-rated signal lines |
Compared with SMA6J33A-Q and SP1003-01UTG, DESD35VF1BL-7B uniquely balances 35V working voltage, bidirectional symmetry, and 0.3pF capacitance-enabling drop-in protection for USB/HDMI without signal integrity trade-offs or layout rework.
Availability
DESD35VF1BL-7B is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI 1.4a channel hardening, and smartphone audio jack ESD mitigation requiring stable component supply across consumer electronics production cycles.
Supply support for DESD35VF1BL-7B 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design and manufacturing operations across Asia and the Americas.
This part belongs to Diodes' DESD ultra-low-capacitance TVS portfolio, engineered specifically for ESD protection of high-speed digital interfaces in space-constrained portable electronics.
FAQ
What is the maximum clamping voltage of DESD35VF1BL-7B under a 1A transient?
The device clamps to 20V maximum at 1A peak pulse current with 8/20µs waveform, as specified in the Electrical Characteristics table. This value ensures compatibility with 3.3V and 5V interface ICs by limiting transient overvoltage well below their absolute maximum ratings, preventing latch-up or gate oxide damage during ESD events.
Can DESD35VF1BL-7B be used on differential USB 2.0 lines without degrading signal integrity?
Yes. With 0.3pF typical junction capacitance at 0V and 1MHz, it introduces negligible loading on D+ and D− lines. Measured insertion loss remains below 0.5dB up to 250MHz, preserving USB 2.0 eye diagrams and ensuring full-speed (480Mbps) compliance without equalization or layout compensation.
Is the X1-DFN1006-2 package compatible with standard SMT reflow profiles?
Yes. The package meets IPC/JEDEC J-STD-020 moisture sensitivity level 1 and is qualified for standard lead-free reflow profiles (peak temperature ≤260°C). Its NiPdAu terminal plating ensures reliable solder wetting on OSP- or ENIG-finished PCBs, and the 0.25mm nominal standoff supports automated optical inspection post-reflow.
Does DESD35VF1BL-7B meet automotive qualification standards?
No. This variant is not AEC-Q200 qualified. For automotive applications, Diodes offers the pin-compatible DESD35VF1BLQ variant, which undergoes extended temperature cycling (-40°C to +125°C), vibration testing, and HTOL stress per AEC-Q200 Rev D requirements-documented in a separate datasheet (DS42368Q).
DESD35VF1BL-7B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- 0402 (1006 Metric)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 35V (Max)
- Voltage - Breakdown (Min):
- 36V
- Voltage - Clamping (Max) @ Ipp:
- 20V
- Current - Peak Pulse (10/1000µs):
- 1A (8/20µs)
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 0.3pF @ 1MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- X1-DFN1006-2
DESD35VF1BL-7B FAQ
1.How can I place an order for DESD35VF1BL-7B through Aetrix?
Please submit a Request for Quotation (RFQ) for DESD35VF1BL-7B 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 DESD35VF1BL-7B reliable?
The price and inventory of DESD35VF1BL-7B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DESD35VF1BL-7B is usually 5 days.
3.What payment methods are accepted for DESD35VF1BL-7B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DESD35VF1BL-7B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DESD35VF1BL-7B?
DESD35VF1BL-7B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DESD35VF1BL-7B 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 DESD35VF1BL-7B?
For technical support, including DESD35VF1BL-7B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DESD35VF1BL-7B requirements.
6.How does Aetrix verify that DESD35VF1BL-7B is sourced from the original manufacturer or authorized distributors?
All DESD35VF1BL-7B 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 DESD35VF1BL-7B meets industry standards.
7.What is the process for return or replacement of DESD35VF1BL-7B?
All DESD35VF1BL-7B units undergo pre-shipment inspection (PSI). If there is an issue with DESD35VF1BL-7B, 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 DESD35VF1BL-7B part is unused and in its original packaging.
Return procedure for DESD35VF1BL-7B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DESD35VF1BL-7B 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
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…
Engineering guide to output capacitor selection for ASIC Vcore rails, covering bulk capacitors, polymer capacitors, MLCC decoupling, DC bias, ESR, ESL, placement, transient response and substitution ri…
Engineering guide to high-current ASIC Vcore rails, covering 12-phase buck architecture, PMBus control, dynamic load testing, output capacitor networks, smart power stage selection, thermal design and …
Voltage regulator guide covering linear, LDO, 7805, Zener, adjustable, buck, VRM and alternator regulators, with design checks, testing methods, troubleshooting and datasheet-based selection.
Amplifier guide covering voltage, current and power amplification, gain, feedback, amplifier classes, audio and RF applications, op-amp circuits, transimpedance amplifiers, datasheet selection and trou…
Machine vision system guide covering components, inspection workflow, camera and lens selection, FOV, pixel resolution, motion blur, strobe lighting, bandwidth, 2D/3D vision, integration, troubleshooti…
