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Diodes Incorporated DESD12VL1BAQ-7
- Part No.:
- DESD12VL1BAQ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
DESD12VL1BAQ-7.pdf
- Description:
- DATALINE PROTECTION PP SOD323 T&
- Quantity:
- Payment:
- Shipping:
Inventory:1,314
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Product details
Overview
DESD12VL1BAQ-7 from Diodes Incorporated is a bidirectional transient voltage suppression (TVS) diode designed for ESD protection of high-speed data lines. It features a 12V reverse standoff voltage, 13.5V minimum breakdown voltage, 22V max clamping voltage at 5A, 19pF channel capacitance, and ±30kV IEC 61000-4-2 contact/air ESD rating - deployed in USB 2.0, HDMI, and automotive infotainment interfaces.
For engineers reviewing the DESD12VL1BAQ-7 datasheet, DESD12VL1BAQ-7 pinout, DESD12VL1BAQ-7 application, or DESD12VL1BAQ-7 equivalent, key selection criteria include clamping voltage under 5A surge, low 19pF input capacitance for signal integrity, AEC-Q101 qualification for automotive use, SOD323 package compatibility with high-density PCB layouts, and compliance with IEC 61000-4-2 Level 4 ESD immunity requirements.
Technical Context
This TVS diode operates as a bidirectional shunt clamp across differential or single-ended signal lines, activating when transient voltage exceeds 13.5V to divert surge current away from protected ICs. Its low 19pF capacitance ensures minimal signal distortion on 480Mbps USB 2.0 and 1.65Gbps HDMI 1.4 channels.
The device uses silicon avalanche junction technology with a 5A peak pulse current rating (8/20μs waveform), delivering 110W peak pulse power dissipation. It is rated for continuous operation from –55°C to +150°C and qualified to AEC-Q101 for automotive under-hood and infotainment applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage (VRWM) | 12 V - Maximum continuous working voltage before clamping begins; sets upper limit for normal signal swing without leakage. |
| Breakdown Voltage (VBR min) | 13.5 V - Guaranteed conduction onset under 5mA test current; defines minimum overvoltage threshold for protection activation. |
| Clamping Voltage (VC @ IPP) | 22 V @ 5 A - Maximum voltage seen by protected circuit during 8/20μs surge; critical for ensuring downstream ICs remain below absolute maximum ratings. |
| Channel Capacitance (CT) | 19 pF @ 0V, 100MHz - Low parasitic loading preserves signal rise/fall times and eye diagram integrity on high-speed interfaces. |
| ESD Rating (IEC 61000-4-2) | ±30 kV contact / ±30 kV air - Full Level 4 immunity; eliminates need for external ESD staging in end-equipment compliance testing. |
| Peak Pulse Power (PPP) | 110 W @ 8/20μs - Sustains transient energy without thermal runaway; derates linearly above +25°C ambient per published curve. |
| Operating Temperature | –55°C to +150°C - Enables deployment in engine control units, ADAS sensors, and industrial HMI displays. |
Pinout & Package
Package: SOD323 - ultra-compact surface-mount plastic package (1.30 × 1.70 × 0.30 mm), moisture sensitivity level 1, matte tin-plated alloy 42 leadframe, RoHS- and halogen-free "Green" construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Input terminal for bidirectional clamping | Connected to signal line; forms symmetrical avalanche junction with cathode to clamp both positive and negative transients. |
| Cathode (K) | Input terminal for bidirectional clamping | Paired with anode to enable symmetric breakdown; no polarity marking required in layout - device functions identically regardless of orientation. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional ESD clamping | Enables single-device protection of AC-coupled or differential signals (e.g., USB D+/D−, HDMI TMDS pairs) without polarity constraints. |
| AEC-Q101 qualification | Validated for automotive electronics including infotainment head units and camera modules; supports PPAP documentation and IATF 16949 manufacturing traceability. |
| 19pF low channel capacitance | Minimizes insertion loss and jitter on 480Mbps USB 2.0 links; maintains >80% signal amplitude at Nyquist frequency (240MHz). |
| ±30kV IEC 61000-4-2 rating | Meets highest industrial and automotive ESD immunity class without additional board-level shielding or filtering components. |
| SOD323 footprint | Reduces PCB area by 40% vs. SOT23; compatible with automated placement and reflow processes using standard 0.5mm pitch stencil apertures. |
Applications
| USB 2.0 Interface Protection | HDMI 1.4 Port Protection |
|---|---|
Use Scenario: Protecting host/device USB ports against user-handling ESD events during cable insertion/removal in automotive telematics modules. IC Role / Device Role / Timing Role: Bidirectional shunt TVS placed directly at connector, clamping transients before they reach USB transceiver PHY. Use Value: 19pF capacitance avoids signal degradation on 480Mbps full-speed links; ±30kV rating ensures pass-fail compliance in ISO 10605 testing. | Use Scenario: Safeguarding HDMI source/sink ports in vehicle display systems exposed to repeated hot-plug and static discharge. IC Role / Device Role / Timing Role: Per-channel TVS on each TMDS differential pair, maintaining common-mode noise rejection while suppressing fast-rising ESD pulses. Use Value: Symmetric 13.5V/22V breakdown/clamp enables clean differential clamping without skew; SOD323 allows dual-channel placement within 3mm². |
| Automotive Infotainment Display | Industrial Camera Interface |
Use Scenario: ESD hardening of LVDS or FPD-Link III video data lanes connecting head unit to central display in passenger vehicles. IC Role / Device Role / Timing Role: Point-of-entry TVS on each high-speed video lane, placed adjacent to connector to minimize inductance in clamping path. Use Value: AEC-Q101 qualification guarantees reliability over 15-year vehicle lifetime; 150°C max operating temperature supports under-dash mounting. | Use Scenario: Protecting MIPI CSI-2 or parallel digital video interfaces in factory automation cameras subjected to maintenance personnel ESD. IC Role / Device Role / Timing Role: Channel-specific TVS on clock and data lines, preserving timing margins in 100+ MHz pixel clocks. Use Value: 22V clamping voltage stays well below 25V absolute max rating of image sensor I/O cells; 19pF avoids duty-cycle distortion. |
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 | Unidirectional; 12V VRWM; 19.9V VC @ 7.3A; 200W PPP; DO-214AC package (4.5×2.7mm) | Requires polarity-aware layout; larger footprint; higher clamping voltage reduces margin for 12V-rail ICs | Select only if unidirectional protection suffices and board space permits larger package. |
| TPD2E001DRYR | 2-channel bidirectional; 5V VRWM; 12V VC @ 1A; 12pF CT; SOT-553 package; integrated ESD protection for I²C/UART | Lower voltage rating; not suitable for 12V signal rails; optimized for low-voltage logic, not video/data lines | Use only for sub-5V digital interfaces; insufficient for HDMI/USB 2.0 voltage headroom. |
Compared with SMAJ12A and TPD2E001DRYR, DESD12VL1BAQ-7 uniquely combines 12V standoff, bidirectional symmetry, 19pF capacitance, and AEC-Q101 qualification in a 1.3×1.7mm footprint - making it the only option meeting all four requirements for automotive high-speed data line protection.
Availability
DESD12VL1BAQ-7 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial camera interfaces, and USB/HDMI port protection requiring stable component supply across multi-year production cycles.
Supply support for DESD12VL1BAQ-7 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 DESDxxVL1BAQ series targets high-reliability ESD protection in automotive and portable electronics, emphasizing low capacitance, AEC-Q101 qualification, and compact packaging for next-generation interface hardening.
FAQ
What is the maximum clamping voltage of DESD12VL1BAQ-7 under a 5A ESD surge?
The maximum clamping voltage is 22 V when subjected to an 8/20 μs peak pulse current of 5 A, as specified in the Electrical Characteristics table. This value is measured across the device terminals and represents the worst-case voltage imposed on the protected circuit during standardized surge testing.
Is DESD12VL1BAQ-7 suitable for protecting HDMI 2.0 or higher data rates?
No - its 19 pF capacitance is validated for HDMI 1.4 (1.65 Gbps) and USB 2.0 (480 Mbps), but not for HDMI 2.0 (6 Gbps) or USB 3.x, where sub-0.5 pF capacitance is typically required. Signal integrity simulations must confirm eye diagram compliance for any higher-speed implementation.
Does DESD12VL1BAQ-7 require orientation-specific PCB placement?
No - it is a fully bidirectional TVS diode with symmetrical avalanche characteristics. The SOD323 package has no polarity marking, and either terminal can be connected to the signal line; performance remains identical regardless of orientation during assembly.
How does the AEC-Q101 qualification impact reliability in automotive applications?
AEC-Q101 qualification confirms successful completion of stress tests including HTGB, HTRB, TCT, and ESD, specifically for discrete semiconductors used in automotive environments. For DESD12VL1BAQ-7, this ensures robustness over –55°C to +150°C and validates suitability for front-end infotainment, ADAS camera links, and body control modules.
DESD12VL1BAQ-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- SC-76, SOD-323
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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:
- 19pF @ 100MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
DESD12VL1BAQ-7 FAQ
1.How can I place an order for DESD12VL1BAQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DESD12VL1BAQ-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 DESD12VL1BAQ-7 reliable?
The price and inventory of DESD12VL1BAQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DESD12VL1BAQ-7 is usually 5 days.
3.What payment methods are accepted for DESD12VL1BAQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DESD12VL1BAQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DESD12VL1BAQ-7?
DESD12VL1BAQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DESD12VL1BAQ-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 DESD12VL1BAQ-7?
For technical support, including DESD12VL1BAQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DESD12VL1BAQ-7 requirements.
6.How does Aetrix verify that DESD12VL1BAQ-7 is sourced from the original manufacturer or authorized distributors?
All DESD12VL1BAQ-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 DESD12VL1BAQ-7 meets industry standards.
7.What is the process for return or replacement of DESD12VL1BAQ-7?
All DESD12VL1BAQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with DESD12VL1BAQ-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 DESD12VL1BAQ-7 part is unused and in its original packaging.
Return procedure for DESD12VL1BAQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DESD12VL1BAQ-7 Tags
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