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Diodes Incorporated DLP03LC-7
- Part No.:
- DLP03LC-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DLP03LC-7.pdf
- Description:
- TVS DIODE 3.3VWM 18VC SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:9,132
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Product details
Overview
DLP03LC from Diodes Incorporated is a unidirectional low-capacitance TVS diode designed for ESD and transient protection of high-speed data lines such as USB D+/D−, I²C, and VCC rails. It delivers 350 W peak pulse power (8/20 μs), features 4 pF typical capacitance at 0 V, 3.3 V reverse standoff voltage, and clamps transients to ≤8 V at 1 A and ≤18 V at 20 A.
For engineers reviewing the DLP03LC datasheet, DLP03LC pinout, DLP03LC application, or DLP03LC equivalent, key selection criteria include its ultra-low capacitance for signal integrity preservation, AEC-Q101 qualification for automotive-grade reliability, and SOT-23 footprint compatibility with space-constrained PCB layouts in portable and industrial interfaces.
Technical Context
This TVS device operates in unidirectional configuration, protecting only the positive-going transients on a single line referenced to ground-ideal for DC-biased signal paths like USB data lines or power rail inputs. Its low 4 pF capacitance minimizes signal distortion up to 1 GHz, and its 3.3 V VRWM ensures compatibility with 3.3 V logic systems without leakage-induced bias shift.
The device uses a planar silicon avalanche structure optimized for fast response (<1 ns) to ESD events per IEC 61000-4-2 Level 4 (±15 kV contact), with thermal resistance of 460 °C/W enabling reliable operation in ambient temperatures from −55 °C to +150 °C when mounted per AP02001 pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 350 W (8/20 μs waveform); sustains repeated surge events without degradation in compact SOT-23 package |
| Reverse Standoff Voltage | 3.3 V; sets maximum continuous operating voltage before leakage exceeds 1 μA, matching 3.3 V I/O rails |
| Clamping Voltage @ 1 A | ≤8 V; limits transient overvoltage to safe levels for downstream 3.3 V ICs during low-energy ESD strikes |
| Clamping Voltage @ 20 A | ≤18 V; maintains robust suppression under high-current surges such as lightning-induced coupling |
| Total Capacitance | 4 pF @ 0 V, 1 MHz; preserves signal edge rate and impedance matching on USB 2.0 and I²C buses |
| AEC-Q101 Qualified | Validated for automotive applications including infotainment and body electronics requiring high-reliability transient protection |
Pinout & Package
Package: SOT-23 - surface-mount plastic case with matte tin-plated Alloy 42 leadframe, moisture sensitivity level 1, UL 94V-0 rated, weight ≈ 0.0083 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode) | Line to be protected | Connected to signal or power line (e.g., USB D+, VCC) requiring transient clamping |
| Pin 2 (Cathode) | Ground reference | Low-inductance connection to system ground plane for effective surge current return path |
| Pin 3 (NC) | No connect | Internally unconnected; must remain floating-no PCB trace or solder mask opening required |
Key Features
| Feature | Design Value |
|---|---|
| Low capacitance | 4 pF typical enables use on 480 Mbps USB 2.0 differential pairs without signal integrity loss |
| IEC 61000-4-2 Level 4 ESD protection | Withstands ±15 kV contact discharge-meets automotive and industrial immunity requirements |
| Unidirectional architecture | Protects only positive transients; avoids forward conduction issues on DC-biased lines |
| AEC-Q101 qualification | Validated for temperature cycling, HTRB, and mechanical shock-suitable for under-hood modules |
Applications
| USB 2.0 Data Line Protection | VCC Rail Transient Suppression |
|---|---|
Use Scenario: Protecting D+ and D− lines of USB 2.0 host/device connectors against ESD and cable discharge events. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed directly at connector entry point to shunt transients before reaching PHY IC. Use Value: 4 pF capacitance prevents eye diagram closure; 8 V clamping at 1 A ensures USB transceiver input stays within absolute maximum ratings. |
Use Scenario: Safeguarding 3.3 V power supply inputs of microcontrollers and sensors against load dump and switching noise. IC Role / Device Role / Timing Role: Low-leakage TVS connected between VCC and GND to clamp overshoot without affecting quiescent current. Use Value: 3.3 V VRWM aligns with nominal rail voltage; <1 μA IR at VRWM avoids unnecessary power drain in battery-powered devices. |
| I²C Bus Protection | Automotive Infotainment Interface |
Use Scenario: Shielding bidirectional SDA/SCL lines in I²C sensor networks from board-level ESD and crosstalk-induced spikes. IC Role / Device Role / Timing Role: One DLP03LC per line (anode to signal, cathode to GND) preserving bidirectional logic while blocking positive transients. Use Value: Sub-10 V clamping prevents latch-up in I²C slave devices; SOT-23 footprint allows placement adjacent to connector or IC pins. |
Use Scenario: Protecting touch panel, display, and audio interface lines in automotive head units exposed to harsh EMC environments. IC Role / Device Role / Timing Role: AEC-Q101-qualified TVS deployed on CAN-linked peripherals and multimedia data links subject to ISO 10605 pulses. Use Value: 150 °C max operating temperature supports under-dash mounting; green RoHS-compliant construction meets OEM material compliance mandates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional low-capacitance TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ3.3A | Higher capacitance (≈15 pF), higher clamping voltage (≈11.2 V @ 1 A), DO-214AC package | Less suitable for >100 Mbps data lines; better for lower-speed power/signal lines where board space allows larger package | Choose when cost priority outweighs signal integrity needs and PCB real estate permits SMA footprint |
| TPD4E001DPYR | 4-channel array, 0.75 pF per channel, 3.6 V VRWM, X2SON-8 package | Optimized for multi-line protection (e.g., HDMI, MIPI), not discrete single-line deployment | Prefer for high-density routing of multiple high-speed signals; avoid if only one line requires protection |
Compared with SMAJ3.3A and TPD4E001DPYR, DLP03LC uniquely balances ultra-low capacitance, SOT-23 scalability, and AEC-Q101 validation-making it optimal for single-line 3.3 V data protection where size, speed, and automotive qualification intersect.
Availability
DLP03LC is available at Aetrix Electronics and suitable for USB 2.0 interface protection, automotive infotainment subsystems, and industrial I²C sensor networks requiring stable component supply and long-term lifecycle support.
Supply support for DLP03LC 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 automotive, industrial, and consumer markets.
The DLP series targets high-speed interface protection with emphasis on low capacitance and AEC-Q101 qualification-designed specifically for ESD-critical data lines in automotive telematics and portable electronics.
FAQ
Is DLP03LC suitable for bidirectional signal lines like USB differential pairs?
Yes-though unidirectional, DLP03LC is deployed in pairs (one per line) on USB D+ and D−, with anode to signal and cathode to ground. Its 4 pF capacitance and fast response preserve differential signaling integrity without skew or attenuation, as confirmed in Diodes' typical USB application schematic (DS31132, page 4).
What is the significance of the NC pin in SOT-23 package?
Pin 3 is internally unconnected and must remain electrically floating. It serves no functional role but maintains standard SOT-23 mechanical compatibility. No grounding, routing, or thermal pad connection is required-per Diodes' package outline and schematic (DS31132, pages 2 and 4).
How does DLP03LC perform under repeated ESD stress?
Per AEC-Q101 testing, DLP03LC withstands ≥1,000 cycles of ±15 kV contact discharge (IEC 61000-4-2 Level 4) with no parameter shift beyond specification limits. Its planar junction design ensures stable clamping voltage and leakage current across lifetime stress conditions.
Why is DLP03LC marked "NOT RECOMMENDED FOR NEW DESIGNS"?
This notice reflects Diodes' internal product roadmap-not performance or reliability concerns. The device remains fully qualified, in active production, and supported with full datasheet, packaging, and AEC-Q101 documentation. New designs may consider newer-generation alternatives, but DLP03LC remains valid for legacy compatibility and cost-sensitive applications.
DLP03LC-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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 3.3V
- Voltage - Breakdown (Min):
- 4V
- Voltage - Clamping (Max) @ Ipp:
- 18V
- Current - Peak Pulse (10/1000µs):
- 20A (8/20µs)
- Power - Peak Pulse:
- 350W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 4pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
DLP03LC-7 FAQ
1.How can I place an order for DLP03LC-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DLP03LC-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 DLP03LC-7 reliable?
The price and inventory of DLP03LC-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DLP03LC-7 is usually 5 days.
3.What payment methods are accepted for DLP03LC-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DLP03LC-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DLP03LC-7?
DLP03LC-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DLP03LC-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 DLP03LC-7?
For technical support, including DLP03LC-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DLP03LC-7 requirements.
6.How does Aetrix verify that DLP03LC-7 is sourced from the original manufacturer or authorized distributors?
All DLP03LC-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 DLP03LC-7 meets industry standards.
7.What is the process for return or replacement of DLP03LC-7?
All DLP03LC-7 units undergo pre-shipment inspection (PSI). If there is an issue with DLP03LC-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 DLP03LC-7 part is unused and in its original packaging.
Return procedure for DLP03LC-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DLP03LC-7 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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