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Diodes Incorporated DESD12VL2BTQ-7
- Part No.:
- DESD12VL2BTQ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DESD12VL2BTQ-7.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR PP
- Quantity:
- Payment:
- Shipping:
Inventory:1,895
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Product details
Overview
DESD12VL2BTQ from Diodes Incorporated is a two-channel bidirectional TVS diode designed for ESD protection of high-speed data lines in portable electronics. It features a 12V reverse standoff voltage, 13.5V minimum breakdown voltage, 22V maximum clamping voltage at 5A peak pulse current, and 19pF typical channel capacitance, making it suitable for HDMI and USB 2.0 interface protection.
For engineers reviewing the DESD12VL2BTQ datasheet, DESD12VL2BTQ pinout, DESD12VL2BTQ application, or DESD12VL2BTQ equivalent, key selection criteria include IEC 61000-4-2 ±30kV contact/air ESD rating, low 19pF input capacitance for signal integrity, AEC-Q101 qualification for automotive use, and SOT23 package compatibility with space-constrained PCB layouts.
Technical Context
This device implements a dual-channel, bidirectional avalanche diode structure optimized for transient suppression on differential or independent signal pairs. Each channel provides symmetrical clamping behavior with 13.5V–18.5V breakdown range and 22V clamping at 5A (8/20μs), enabling robust protection without signal distortion.
Its 19pF channel capacitance and 0.5μA max reverse leakage at 12V VRWM support high-speed interfaces up to 480Mbps while maintaining low power loss. The SOT23-3L package enables surface-mount integration with minimal parasitic inductance for fast transient response.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage (VRWM) | 12 V - Maximum continuous operating voltage before clamping begins; sets safe operating margin for 12V nominal bus lines. |
| Breakdown Voltage (VBR min) | 13.5 V - Minimum voltage at which avalanche conduction initiates; ensures reliable triggering above normal signal swings. |
| Clamping Voltage (VC @ IPP) | 22 V @ 5 A - Peak voltage seen by protected circuit during 8/20μs surge; limits stress on downstream ICs. |
| Peak Pulse Current (IPP) | 5 A - Maximum non-repetitive surge current the device can safely divert per channel. |
| Channel Capacitance (CT) | 19 pF - Low input capacitance preserves signal rise/fall times in USB 2.0 and HDMI applications. |
| ESD Rating | ±30 kV (Contact & Air) - Full compliance with IEC 61000-4-2 Level 4, eliminating need for external ESD staging. |
Pinout & Package
SOT23-3L package: compact 2.4mm × 1.3mm footprint with gull-wing leads, rated for moisture sensitivity level 1 (J-STD-020), and compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode of Channel 1 | Connects to first protected signal line (e.g., USB D+); forms one side of bidirectional clamp path. |
| Pin 2 | Cathode (Common) | Shared cathode node for both channels; ties to ground plane or low-impedance return path. |
| Pin 3 | Anode of Channel 2 | Connects to second protected signal line (e.g., USB D−); enables differential pair protection in single package. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional ESD protection per channel | Enables symmetric clamping on AC-coupled or differential signals without polarity constraints. |
| AEC-Q101 qualified | Validated for automotive infotainment and body control modules requiring zero-defect reliability. |
| 19pF typical channel capacitance | Minimizes signal attenuation and jitter on 480Mbps USB 2.0 links and HDMI 1.4 TMDS channels. |
| ±30kV IEC 61000-4-2 rating | Eliminates need for secondary ESD stages in end-product design, reducing BOM count and layout area. |
Applications
| USB 2.0 Interface Protection | HDMI 1.4 TMDS Line Protection |
|---|---|
Use Scenario: Protecting D+/D− differential pair in smartphone docking stations against repeated ESD events during cable insertion. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor placed directly at connector entry point. Use Value: 19pF capacitance avoids signal integrity degradation at 480Mbps, while ±30kV rating ensures field reliability over 10,000 connect/disconnect cycles. | Use Scenario: Shielding TMDS clock and data lanes in automotive head unit displays from ESD coupling via HDMI cables. IC Role / Device Role / Timing Role: Dual-channel TVS mounted adjacent to HDMI receptacle to clamp transients before reaching SerDes receiver. Use Value: AEC-Q101 qualification guarantees operation across −40°C to +125°C ambient, meeting automotive junction temperature requirements. |
| Automotive Infotainment Port | Industrial USB-C Docking Hub |
Use Scenario: Safeguarding USB ports in vehicle-mounted navigation systems exposed to dry-climate ESD during user interaction. IC Role / Device Role / Timing Role: Primary ESD protection element on USB Type-A port, positioned before USB switch IC. Use Value: 12V VRWM aligns with 5V USB bus with safety margin; 22V clamping prevents latch-up in connected microcontrollers. | Use Scenario: Protecting upstream/downstream USB 2.0 lanes in multi-port industrial docking hubs handling frequent peripheral swaps. IC Role / Device Role / Timing Role: Two independent TVS channels per port, each guarding one signal pair in compact SOT23-3L footprint. Use Value: SOT23-3L package allows dense routing on 4-layer PCBs; RoHS/Green compliance meets EU industrial equipment directives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12A | Single-channel, 12V unidirectional, 100W PPP, 100pF CT | Requires two devices for dual-line protection; higher capacitance degrades >100Mbps signals | Select only when cost dominates and signal speed <100Mbps |
| SP1003-010 | Single-channel, 12V bidirectional, 30kV ESD, 15pF CT, SOD-323 | Single-channel only; requires two units for differential pair; smaller 1.7×1.25mm footprint | Choose for ultra-low capacitance needs where board space permits dual placement |
Compared with SMAJ12A and SP1003-010, DESD12VL2BTQ uniquely delivers dual-channel bidirectional protection in one SOT23-3L package with balanced 19pF capacitance-optimizing PCB area, signal fidelity, and assembly efficiency for USB/HDMI applications.
Availability
DESD12VL2BTQ is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI 1.4 TMDS line safeguarding, and automotive infotainment port hardening requiring stable component supply and long-term lifecycle assurance.
Supply support for DESD12VL2BTQ 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, manufacturing, and sales operations across Asia, Europe, and North America.
The DESDxxVL2BTQ series belongs to Diodes' high-reliability TVS portfolio, engineered specifically for ESD-sensitive high-speed digital interfaces in automotive, consumer, and industrial applications.
FAQ
What is the maximum clamping voltage of DESD12VL2BTQ under a 5A 8/20μs surge?
The maximum clamping voltage (VC) is 22 V when subjected to a 5 A peak pulse current with an 8/20 μs waveform, measured per IEC 61000-4-5 test conditions. This value ensures downstream components experience limited overvoltage stress during transient events, supporting robust system-level ESD immunity without additional protection stages.
Is DESD12VL2BTQ suitable for USB 3.0 or higher-speed interfaces?
No-its 19 pF typical channel capacitance introduces excessive signal attenuation and jitter on SuperSpeed (5 Gbps) or Gen2 (10 Gbps) differential lanes. It is validated for USB 2.0 (480 Mbps) and HDMI 1.4 (up to 3.4 Gbps TMDS), where bandwidth requirements align with its RC time constant and insertion loss profile.
Does DESD12VL2BTQ require external biasing or control signals?
No-it operates passively as a voltage-triggered avalanche diode with no external connections beyond the three pins (two anodes and one shared cathode). No power supply, enable pin, or configuration interface is needed; clamping activates automatically when voltage exceeds VBR, making it ideal for plug-and-play ESD hardening.
How does the AEC-Q101 qualification impact usage in non-automotive designs?
AEC-Q101 qualification confirms extended temperature operation (−55°C to +150°C), enhanced reliability testing (HTOL, TC, UHAST), and process controls aligned with automotive standards. These attributes directly benefit industrial and medical applications requiring long service life, wide thermal margins, and zero-defect field performance-even outside automotive environments.
DESD12VL2BTQ-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 2
- Voltage - Reverse Standoff (Typ):
- 12V
- Voltage - Breakdown (Min):
- 13.5V
- Voltage - Clamping (Max) @ Ipp:
- 22V
- Current - Peak Pulse (10/1000µs):
- 5A
- Power - Peak Pulse:
- 230W
- Power Line Protection:
- No
- Applications:
- HDMI, USB
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
DESD12VL2BTQ-7 FAQ
1.How can I place an order for DESD12VL2BTQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DESD12VL2BTQ-7 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 DESD12VL2BTQ-7 reliable?
The price and inventory of DESD12VL2BTQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DESD12VL2BTQ-7 is usually 5 days.
3.What payment methods are accepted for DESD12VL2BTQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DESD12VL2BTQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DESD12VL2BTQ-7?
DESD12VL2BTQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DESD12VL2BTQ-7 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 DESD12VL2BTQ-7?
For technical support, including DESD12VL2BTQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DESD12VL2BTQ-7 requirements.
6.How does Aetrix verify that DESD12VL2BTQ-7 is sourced from the original manufacturer or authorized distributors?
All DESD12VL2BTQ-7 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 DESD12VL2BTQ-7 meets industry standards.
7.What is the process for return or replacement of DESD12VL2BTQ-7?
All DESD12VL2BTQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with DESD12VL2BTQ-7, 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 DESD12VL2BTQ-7 part is unused and in its original packaging.
Return procedure for DESD12VL2BTQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DESD12VL2BTQ-7 Tags
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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