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Diodes Incorporated DBLC03CI-7
- Part No.:
- DBLC03CI-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
DBLC03CI-7.pdf
- Description:
- Dataline Protection PP SOD323 T&
- Quantity:
- Payment:
- Shipping:
Inventory:9,327
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Product details
Overview
DBLC03CI-7 from Diodes Incorporated is a bidirectional ultra-low-capacitance TVS diode in SOD323 package, designed for ESD protection of high-speed data lines. It delivers 4V reverse breakdown voltage, 0.7pF typical input capacitance, ±27kV contact/±30kV air ESD immunity per IEC 61000-4-2, and clamps to 7V at 1A-used in USB 2.0 and 10/100/1000BASE-T Ethernet interfaces.
For engineers reviewing the DBLC03CI-7 datasheet, DBLC03CI-7 pinout, DBLC03CI-7 application, or DBLC03CI-7 equivalent, key selection criteria include sub-1pF capacitance for signal integrity, bidirectional clamping for AC-coupled lines, low clamping voltage under 19A peak pulse, and SOD323 footprint compatibility with space-constrained portable designs.
Technical Context
This device operates as a two-terminal, symmetrical transient voltage suppressor optimized for electrostatic discharge events on single-ended data lines. Its silicon avalanche structure enables fast response (<1ns) to ESD transients while maintaining <0.8pF capacitance at 0V bias and 1MHz-critical for preserving signal rise/fall times in USB and Ethernet PHY interfaces.
The SOD323 package supports thermal dissipation up to 250mW at +25°C ambient, with junction-to-ambient thermal resistance of 500°C/W on standard FR-4 PCB layout. It sustains operation from –55°C to +150°C and meets automotive-grade handling requirements (Moisture Sensitivity Level 1).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 3.3V - Maximum continuous reverse working voltage before leakage exceeds 4.5μA; sets upper limit for DC bias on protected line. |
| VBR (min) | 4V - Minimum reverse breakdown voltage at 1mA; ensures reliable conduction only during overvoltage events. |
| CIN (typ) | 0.7pF - Typical junction capacitance at 0V, 1MHz; preserves signal integrity in >480Mbps USB 2.0 and 1Gbps Ethernet links. |
| VCL @ 1A | 7V - Clamping voltage during 8/20μs surge at 1A; limits stress on downstream PHY ICs during moderate transients. |
| IPP (max) | 19A - Peak pulse current rating for 8/20μs waveform; withstands worst-case IEC 61000-4-2 contact discharge. |
| ESD Rating | ±27kV contact / ±30kV air - Complies with IEC 61000-4-2 Level 4; eliminates need for external ESD test margining. |
Pinout & Package
Package: SOD323 - 2-pin surface-mount plastic package, 1.30mm × 1.70mm body size, 0.30mm lead width, matte tin-plated alloy 42 leadframe, RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | ESD current entry point (positive transient) | Conducts surge current toward cathode during positive ESD event; forms symmetrical path with cathode for bidirectional clamping. |
| Cathode (Pin 2) | ESD current entry point (negative transient) | Conducts surge current toward anode during negative ESD event; enables identical clamping behavior in both polarities. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional ESD clamping | Symmetrical VBR and VCL enable protection of AC-coupled differential or single-ended lines without polarity constraints. |
| Ultra-low 0.7pF capacitance | Minimizes signal distortion and insertion loss in high-frequency data paths such as USB 2.0 and Gigabit Ethernet. |
| ±27kV contact ESD immunity | Exceeds IEC 61000-4-2 Level 4 requirement, reducing risk of field failures in handheld and industrial equipment. |
| SOD323 footprint | Enables compact PCB layout with standardized reflow profile compatibility and proven manufacturability in high-volume assembly. |
Applications
| USB 2.0 Interface Protection | Ethernet PHY Line Protection |
|---|---|
Use Scenario: Protecting D+ and D– lines of USB 2.0 transceivers against user-handling ESD events in smartphones and peripherals. IC Role / Device Role / Timing Role: Two-terminal bidirectional clamp placed directly at connector, shunting transients before they reach the PHY IC. Use Value: 0.7pF capacitance avoids degrading 480Mbps eye diagram; ±27kV contact rating covers real-world plug/unplug scenarios. | Use Scenario: Safeguarding MDI pins of 10/100/1000BASE-T Ethernet PHYs in switches, routers, and industrial controllers. IC Role / Device Role / Timing Role: Single-channel TVS mounted on each twisted-pair line (TX+/TX–, RX+/RX–), operating in parallel with common-mode chokes. Use Value: Low clamping voltage (7V @ 1A) prevents PHY latch-up; SOD323 allows placement within 5mm of RJ45 connector per IEEE 802.3 layout guidelines. |
| Wireless Module Antenna Feed Protection | Industrial Sensor Interface Protection |
Use Scenario: Shielding RF front-end matching networks in Bluetooth/Wi-Fi modules from ESD induced via board flex or enclosure contact. IC Role / Device Role / Timing Role: Placed between antenna switch and transceiver RF port, acting as low-capacitance shunt to ground during ESD. Use Value: Sub-1pF CIN avoids detuning 2.4GHz/5GHz impedance matching; bidirectional symmetry accommodates DC-biased RF paths. | Use Scenario: Securing analog sensor outputs (e.g., temperature, pressure) connected to microcontroller ADC inputs in factory automation systems. IC Role / Device Role / Timing Role: Installed at sensor cable entry point on controller PCB, clamping transients coupled from nearby motor drives or relay switching. Use Value: 4V VBR ensures no conduction during normal 3.3V rail operation; 150°C max junction temperature supports extended industrial ambient conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SP1003-01UTG | 0.35pF CIN, 3.3V VRWM, ±30kV ESD, SOD-323 | Lower capacitance suits >5Gbps interfaces (e.g., USB 3.2 Gen 1); slightly lower PPP (200W) | Select when signal bandwidth exceeds 1GHz and clamping voltage margin >8V is acceptable. |
| ESD9X3.3S | 0.8pF CIN, 3.3V VRWM, ±25kV ESD, SOD-323 | Lower ESD rating; higher leakage (10μA max); same footprint and VCL (7.5V @ 1A) | Choose for cost-sensitive consumer applications where ±25kV air discharge suffices and leakage tolerance is relaxed. |
Compared with SP1003-01UTG and ESD9X3.3S, DBLC03CI-7 balances ultra-low capacitance (0.7pF), robust ±27kV contact ESD rating, and 7V clamping at 1A-making it optimal for USB 2.0 and Gigabit Ethernet where signal fidelity and reliability are jointly critical.
Availability
DBLC03CI-7 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, Gigabit Ethernet PHY line safeguarding, and industrial sensor analog input conditioning requiring stable component supply across production lifecycles.
Supply support for DBLC03CI-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 integrated circuits, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The DBLC series targets high-speed data line ESD protection, emphasizing sub-1pF capacitance, bidirectional symmetry, and IEC 61000-4-2 compliance for portable, networking, and industrial connectivity applications.
FAQ
What is the maximum operating temperature range for DBLC03CI-7?
The DBLC03CI-7 is rated for junction temperatures from –55°C to +150°C, enabling use in automotive under-hood modules, industrial PLCs, and outdoor networking equipment. Its SOD323 package maintains thermal stability under sustained 250mW power dissipation on standard FR-4 PCB layouts with 2oz copper.
Does DBLC03CI-7 require orientation during PCB placement?
No-DBLC03CI-7 is a symmetrical bidirectional device with identical electrical characteristics in either orientation. The SOD323 package has no polarity marking; both terminals function interchangeably as anode or cathode depending on transient polarity, simplifying layout and assembly.
How does the 0.7pF capacitance impact USB 2.0 signal integrity?
At 0.7pF, the DBLC03CI-7 introduces negligible capacitive loading on USB 2.0 D+/D– lines, preserving rise/fall times below 1.5ns and maintaining eye diagram compliance at 480Mbps. Measured insertion loss remains <0.5dB up to 500MHz, avoiding jitter accumulation or bit-error-rate degradation.
Can DBLC03CI-7 be used in automotive applications?
While DBLC03CI-7 meets AEC-Q200 passive stress test requirements in its construction (MSL1, lead-free, halogen-free), it is not officially AEC-Q101 qualified. For automotive use, Diodes recommends contacting their applications team to evaluate qualification path or select pre-qualified alternatives like the DZ23C3V3 series.
DBLC03CI-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- SC-76, SOD-323
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 3.3V (Max)
- Voltage - Breakdown (Min):
- 4V
- Voltage - Clamping (Max) @ Ipp:
- 18.5V
- Current - Peak Pulse (10/1000µs):
- 19A (8/20µs)
- Power - Peak Pulse:
- 350W
- Power Line Protection:
- No
- Applications:
- Ethernet, USB
- Capacitance @ Frequency:
- 0.7pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
DBLC03CI-7 FAQ
1.How can I place an order for DBLC03CI-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DBLC03CI-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 DBLC03CI-7 reliable?
The price and inventory of DBLC03CI-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DBLC03CI-7 is usually 5 days.
3.What payment methods are accepted for DBLC03CI-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DBLC03CI-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DBLC03CI-7?
DBLC03CI-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DBLC03CI-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 DBLC03CI-7?
For technical support, including DBLC03CI-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DBLC03CI-7 requirements.
6.How does Aetrix verify that DBLC03CI-7 is sourced from the original manufacturer or authorized distributors?
All DBLC03CI-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 DBLC03CI-7 meets industry standards.
7.What is the process for return or replacement of DBLC03CI-7?
All DBLC03CI-7 units undergo pre-shipment inspection (PSI). If there is an issue with DBLC03CI-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 DBLC03CI-7 part is unused and in its original packaging.
Return procedure for DBLC03CI-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DBLC03CI-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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