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Diodes Incorporated DESD24VF1BL-7B
- Part No.:
- DESD24VF1BL-7B
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- 0402 (1006 Metric)
- Datasheet:
-
DESD24VF1BL-7B.pdf
- Description:
- DATALINE PROTECTION PP X1-DFN100
- Quantity:
- Payment:
- Shipping:
Inventory:4,827
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Product details
Overview
DESD24VF1BL-7B from Diodes Incorporated is a bidirectional transient voltage suppression (TVS) diode designed for ESD protection of high-speed data lines in portable electronics. It features a 24V reverse working voltage, 25V minimum breakdown voltage, 0.3pF typical capacitance, ±12kV contact/±15kV air ESD rating per IEC 61000-4-2, and 1A peak pulse current capability - enabling robust protection without signal integrity degradation in USB 2.0, HDMI, or audio interfaces.
For engineers reviewing the DESD24VF1BL-7B datasheet, DESD24VF1BL-7B pinout, DESD24VF1BL-7B application, or DESD24VF1BL-7B equivalent, this ultra-low-capacitance TVS diode supports high-frequency signal paths in space-constrained designs where ESD immunity, minimal parasitic loading, and JEDEC-qualified reliability are critical selection criteria.
Technical Context
This TVS diode operates as a clamping device in bidirectional configuration, activating symmetrically above ±25V to divert ESD transients away from sensitive IC inputs. Its low dynamic resistance (0.65Ω) ensures rapid voltage clamping during 8/20μs surges, while sub-0.45pF max capacitance preserves signal rise/fall times in >100MHz interfaces.
The X1-DFN1006-2 package integrates NiPdAu-plated terminals on a copper leadframe, supporting reflow soldering per MIL-STD-202 and achieving Level 1 moisture sensitivity. Thermal resistance of 500°C/W enables stable operation up to +150°C ambient when mounted on standard FR-4 PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 24 V - Maximum continuous reverse operating voltage before leakage exceeds 1nA; sets upper limit for protected line DC bias. |
| VBR (Min) | 25 V - Minimum voltage at which device enters avalanche conduction at 1mA; defines ESD trigger threshold. |
| VCL2 @ 1A | 23 V - Clamped voltage during 8/20μs surge; determines maximum stress imposed on downstream IC pins. |
| CT (Typ) | 0.3 pF - Capacitance at 0V bias and 1MHz; enables use in USB 2.0 (480Mbps) and audio codec interfaces without signal distortion. |
| ESD Rating | ±12kV contact / ±15kV air - Complies with IEC 61000-4-2 Level 4; qualifies for front-panel button, connector, and touchscreen ESD hardening. |
| PD (Max) | 250 mW - Steady-state power dissipation limit; constrains thermal design for continuous overvoltage conditions. |
Pinout & Package
Package: X1-DFN1006-2 - 0.53mm max height, 1.08mm × 0.68mm footprint, 2-terminal monolithic structure with exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Connected to protected signal line; forms one side of bidirectional clamping path. |
| 2 | Cathode | Connected to protected signal line; completes symmetrical clamping path with Pin 1. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low capacitance | 0.3pF typical - Enables integration into high-speed serial interfaces (e.g., USB 2.0, MIPI D-PHY) without degrading eye diagram integrity. |
| IEC 61000-4-2 compliance | ±12kV contact / ±15kV air - Meets industrial and consumer ESD immunity requirements without external shielding or layout reinforcement. |
| JEDEC-qualified reliability | AEC-Q200-compliant stress testing - Validates suitability for automotive infotainment and telematics modules requiring extended temperature and lifetime stability. |
| Green packaging | Halogen- and antimony-free, RoHS 3 compliant - Supports environmental compliance for EU, China RoHS, and global WEEE directives without performance trade-offs. |
Applications
| USB 2.0 Interface Protection | Smartphone Front-Panel ESD Hardening |
|---|---|
Use Scenario: Protecting D+ and D− lines of USB 2.0 ports against repeated ESD events during cable insertion and hot-plug operations. IC Role / Device Role: Bidirectional clamping TVS placed directly at connector entry point to shunt transients before reaching USB transceiver IC. Use Value: 0.3pF capacitance avoids signal attenuation or jitter increase, maintaining full 480Mbps data rate compliance under IEC 61000-4-2 stress. |
Use Scenario: Shielding tactile buttons, capacitive touch sensors, and display flex cables from user-hand ESD in handheld devices. IC Role / Device Role: Point-of-entry protection element mounted adjacent to mechanical switches or sensor pads to absorb ±12kV contact discharges. Use Value: Sub-0.53mm profile allows placement in tight bezel areas without interfering with mechanical stack-up or flex routing. |
| Audio Codec Line Protection | Industrial HMI Touchscreen Interface |
Use Scenario: Safeguarding analog audio input/output paths (e.g., headset jack, microphone bias lines) in portable media players and voice assistants. IC Role / Device Role: Low-leakage (1nA max) TVS preventing DC offset shift or noise injection into high-impedance audio amplifiers. Use Value: 24V VRWM accommodates common 3.3V–5V audio bias rails while clamping transients below IC absolute maximum ratings. |
Use Scenario: Protecting resistive/capacitive touchscreen controller I/O lines in factory HMIs exposed to maintenance personnel ESD during panel servicing. IC Role / Device Role: Primary ESD suppressor on controller-side traces, placed within 2mm of connector to minimize inductance in discharge path. Use Value: 250mW power rating supports sustained operation in unventilated enclosures with ambient temperatures up to +85°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A | DO-214AC package, 350W peak power, 120pF capacitance, unidirectional | Requires dual-device configuration for bidirectional protection; unsuitable for >10MHz signals due to high capacitance | Select only for low-frequency industrial I/O where board space and signal speed are non-critical |
| TPD2E001DRYR | 2-channel, 0.9pF per channel, ±8kV contact ESD rating, same DFN1006 package | Limited to lower ESD severity environments; lacks ±12kV contact rating required for consumer front-panel compliance | Prefer when protecting two adjacent lines (e.g., I²C SDA/SCL) with shared footprint but reduced ESD margin |
Compared with SMAJ24A and TPD2E001DRYR, DESD24VF1BL-7B uniquely delivers bidirectional ±12kV/±15kV ESD protection in a single 0.3pF, 1.08mm×0.68mm device - making it the only option among the three qualified for high-speed, space-constrained, and full-IEC-Level-4 consumer interface protection.
Availability
DESD24VF1BL-7B is available at Aetrix Electronics and suitable for USB 2.0 interface protection, smartphone front-panel ESD hardening, and audio codec line protection requiring stable component supply across production lifecycles.
Supply support for DESD24VF1BL-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, specializing in high-reliability protection, power management, and signal integrity solutions for consumer, industrial, and automotive markets.
This device belongs to Diodes' DESD ultra-low-capacitance TVS portfolio, engineered specifically for ESD-hardened high-speed data interfaces in portable and wearable electronics where minimal parasitic loading is mandatory.
FAQ
What is the maximum clamping voltage of DESD24VF1BL-7B during an ESD event?
The device clamps to 23V maximum at 1A peak pulse current (8/20μs waveform), and to 21V typical at 16A transmission-line pulse (100ns). This ensures protected ICs experience voltage stress well below their absolute maximum ratings, even under worst-case IEC 61000-4-2 contact discharge conditions.
Can DESD24VF1BL-7B be used for HDMI interface protection?
No - while its 0.3pF capacitance is favorable, HDMI 1.4/2.0 differential pairs operate at >1GHz frequencies where even sub-0.5pF parasitics cause measurable return loss and eye closure. Dedicated HDMI ESD arrays (e.g., Diodes' APxxxx series) with matched differential capacitance and common-mode rejection are required instead.
Does DESD24VF1BL-7B require a ground connection?
No - it is a two-terminal bidirectional device with no dedicated ground pin. Both terminals connect across the signal line being protected (e.g., between D+ and D−), relying on symmetrical avalanche conduction to clamp transients in either polarity without reference to system ground.
Is the X1-DFN1006-2 package compatible with standard reflow profiles?
Yes - the device is qualified for Pb-free reflow per J-STD-020, with a maximum peak temperature of 260°C and 60-second duration above 217°C. Its NiPdAu-plated terminals ensure reliable wetting on OSP- or ENIG-finished PCBs using standard Type 3 solder paste.
DESD24VF1BL-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):
- 24V (Max)
- Voltage - Breakdown (Min):
- 25V
- Voltage - Clamping (Max) @ Ipp:
- 23V
- 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
DESD24VF1BL-7B FAQ
1.How can I place an order for DESD24VF1BL-7B through Aetrix?
Please submit a Request for Quotation (RFQ) for DESD24VF1BL-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 DESD24VF1BL-7B reliable?
The price and inventory of DESD24VF1BL-7B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DESD24VF1BL-7B is usually 5 days.
3.What payment methods are accepted for DESD24VF1BL-7B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DESD24VF1BL-7B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DESD24VF1BL-7B?
DESD24VF1BL-7B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DESD24VF1BL-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 DESD24VF1BL-7B?
For technical support, including DESD24VF1BL-7B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DESD24VF1BL-7B requirements.
6.How does Aetrix verify that DESD24VF1BL-7B is sourced from the original manufacturer or authorized distributors?
All DESD24VF1BL-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 DESD24VF1BL-7B meets industry standards.
7.What is the process for return or replacement of DESD24VF1BL-7B?
All DESD24VF1BL-7B units undergo pre-shipment inspection (PSI). If there is an issue with DESD24VF1BL-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 DESD24VF1BL-7B part is unused and in its original packaging.
Return procedure for DESD24VF1BL-7B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DESD24VF1BL-7B Tags
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