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Diodes Incorporated DBLC05CI-7
- Part No.:
- DBLC05CI-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
DBLC05CI-7.pdf
- Description:
- Dataline Protection PP SOD323 T&
- Quantity:
- Payment:
- Shipping:
Inventory:4,871
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Product details
Overview
DBLC05CI-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 6 V minimum breakdown voltage, 0.6 pF typical junction capacitance, ±27 kV contact/±30 kV air ESD immunity per IEC 61000-4-2, and clamps to 20.6 V at 17 A peak pulse current-used in USB 2.0 and 10/100/1000BASE-T Ethernet interfaces.
For engineers reviewing the DBLC05CI-7 datasheet, DBLC05CI-7 pinout, DBLC05CI-7 application, or DBLC05CI-7 equivalent, this page provides verified electrical parameters, package dimensions, real-world ESD clamping behavior, thermal derating curves, and validated alternatives for high-speed signal line protection where sub-1 pF capacitance and fast response are critical.
Technical Context
The DBLC05CI-7 functions as a bidirectional transient voltage suppressor optimized for electrostatic discharge suppression on single-ended data lines. Its silicon avalanche structure triggers at ≥6 V reverse breakdown and clamps transients to ≤20.6 V under 17 A 8/20 μs pulses, with <4.5 μA leakage at 5 V VRWM.
Its 0.6 pF capacitance at 0 V bias and 1 MHz enables minimal signal distortion in USB 2.0 (480 Mbps) and Gigabit Ethernet PHY interfaces. The device operates across –55 °C to +150 °C and is rated for 350 W peak pulse power per IEC 61000-4-2 waveform compliance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VBR) | 6 V min at 1 mA - ensures reliable triggering above 5 V data line operating voltage without false conduction |
| Junction Capacitance (CT) | 0.6 pF typ at 0 V, 1 MHz - preserves signal integrity in USB 2.0 and 1000BASE-T applications |
| Clamping Voltage (VCL) | 20.6 V max at 17 A, 8/20 μs - limits transient overvoltage to safe levels for downstream PHY ICs |
| ESD Rating | ±27 kV contact / ±30 kV air per IEC 61000-4-2 - meets industrial and consumer end-equipment immunity requirements |
| Reverse Working Voltage (VRWM) | 5 V - matches standard USB and Ethernet PHY supply rails, preventing DC leakage during normal operation |
| Peak Pulse Power (PPP) | 350 W at 8/20 μs - sustains high-energy ESD events without degradation |
Pinout & Package
Package: SOD323 - surface-mount plastic package with 2-terminal configuration, 0.004 g mass, UL 94V-0 rating, and matte tin-plated alloy 42 leadframe. Moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Transient current sink (during positive ESD event) | Connects to protected data line; conducts when voltage exceeds VBR in either polarity |
| Cathode (K) | Transient current sink (during negative ESD event) | Connected to ground reference; completes low-impedance path for bidirectional clamping |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional ESD clamping | Protects AC-coupled or differential data lines without polarity constraints |
| Ultra-low 0.6 pF capacitance | Minimizes insertion loss and timing skew in 480 Mbps USB 2.0 and 1.25 Gbps Ethernet links |
| IEC 61000-4-2 Level 4 compliance | Validated for highest severity ESD stress in commercial and industrial environments |
| Lead-free, halogen-free, RoHS 3 compliant | Meets global environmental regulations and supports Pb-free reflow soldering at 260 °C |
Applications
| USB 2.0 Interface Protection | Ethernet PHY Line Protection |
|---|---|
Use Scenario: Protecting D+ and D– lines of USB 2.0 host/device ports against user-handling ESD events. IC Role / Device Role / Timing Role: Bidirectional clamping diode placed between data line and chassis/PCB ground. Use Value: 0.6 pF capacitance prevents signal rise-time degradation while maintaining full 480 Mbps bandwidth. | Use Scenario: Shielding 1000BASE-T transformer-coupled MDI lines from cable-discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS on each twisted pair before magnetics or PHY input. Use Value: Clamps transients to ≤20.6 V at 17 A, preserving PHY input stage reliability without affecting 125 MHz signaling. |
| Handheld Wireless Antenna Feedline | Industrial Sensor Interface |
Use Scenario: ESD protection on RF antenna feedlines in Bluetooth/Wi-Fi modules exposed to human touch. IC Role / Device Role / Timing Role: Series-connected TVS on antenna matching network output. Use Value: Sub-1 pF capacitance avoids detuning of 2.4 GHz/5 GHz impedance matching networks. | Use Scenario: Protecting RS-485 or CAN FD transceiver I/O pins in factory automation nodes. IC Role / Device Role / Timing Role: Point-of-entry TVS on differential bus lines before transceiver inputs. Use Value: ±30 kV air discharge rating withstands harsh shop-floor ESD events without latch-up or parametric shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ5.0A | Unidirectional, 5.0 V VRWM, 600 W PPP, 35 pF CT | Requires external polarity management; unsuitable for AC-coupled or differential lines | Select only if protecting DC-biased lines with strict cost constraints and no high-speed requirement |
| TPD2E001DRYR | Bidirectional, 5.5 V VRWM, 0.9 pF CT, ±8 kV IEC 61000-4-2 | Lower ESD rating; intended for portable electronics, not industrial-grade surge environments | Prefer for space-constrained consumer devices where ±8 kV suffices and 0.9 pF is acceptable |
Compared with SMAJ5.0A and TPD2E001DRYR, DBLC05CI-7 uniquely combines bidirectionality, 0.6 pF capacitance, and ±30 kV air ESD rating-making it optimal for robust, high-speed industrial and networking interfaces where signal fidelity and extreme ESD immunity are both required.
Availability
DBLC05CI-7 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, Gigabit Ethernet PHY line hardening, and handheld wireless antenna feedline ESD suppression requiring stable component supply and guaranteed long-term sourcing.
Supply support for DBLC05CI-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, specializing in high-reliability protection, power management, and signal integrity solutions for industrial, computing, and communications markets.
The DBLC05CI-7 belongs to Diodes' ultra-low-capacitance TVS portfolio, engineered specifically for ESD-hardened high-speed data interfaces where sub-1 pF loading and IEC 61000-4-2 Level 4 compliance are mandatory.
FAQ
What is the maximum clamping voltage of DBLC05CI-7 at 17 A?
The DBLC05CI-7 clamps to a maximum of 20.6 V at 17 A peak pulse current under an 8/20 μs waveform, as specified in the Electrical Characteristics table of DS43653 Rev. 3-2. This value is measured with defined test conditions and reflects worst-case transient suppression performance at rated pulse current.
Can DBLC05CI-7 be used on differential pairs like USB D+/D– without signal degradation?
Yes. With 0.6 pF typical junction capacitance at 0 V and 1 MHz, DBLC05CI-7 introduces negligible imbalance or insertion loss on USB 2.0 differential pairs. Its bidirectional symmetry ensures matched clamping behavior on both lines, preserving common-mode rejection and eye diagram integrity at 480 Mbps.
Is DBLC05CI-7 qualified for automotive applications?
No. DBLC05CI-7 is not AEC-Q101 qualified. Diodes Incorporated explicitly states that automotive-grade variants require specific change control, PPAP capability, and IATF 16949 manufacturing-none of which apply to this part. Use only in commercial or industrial environments unless separately qualified.
What is the thermal resistance (RθJA) of DBLC05CI-7 on a standard FR-4 PCB?
The thermal resistance from junction to ambient (RθJA) is 500 °C/W when mounted on a standard FR-4 PCB with 2 oz copper per Diodes' recommended pad layout. This value assumes the footprint and copper area specified in Diodes' SOD323 package outline documentation.
DBLC05CI-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):
- 5V
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 20.6V
- Current - Peak Pulse (10/1000µs):
- 17A (8/20µs)
- Power - Peak Pulse:
- 350W
- Power Line Protection:
- No
- Applications:
- Ethernet, USB
- Capacitance @ Frequency:
- 0.6pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
DBLC05CI-7 FAQ
1.How can I place an order for DBLC05CI-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DBLC05CI-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 DBLC05CI-7 reliable?
The price and inventory of DBLC05CI-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DBLC05CI-7 is usually 5 days.
3.What payment methods are accepted for DBLC05CI-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DBLC05CI-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DBLC05CI-7?
DBLC05CI-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DBLC05CI-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 DBLC05CI-7?
For technical support, including DBLC05CI-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DBLC05CI-7 requirements.
6.How does Aetrix verify that DBLC05CI-7 is sourced from the original manufacturer or authorized distributors?
All DBLC05CI-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 DBLC05CI-7 meets industry standards.
7.What is the process for return or replacement of DBLC05CI-7?
All DBLC05CI-7 units undergo pre-shipment inspection (PSI). If there is an issue with DBLC05CI-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 DBLC05CI-7 part is unused and in its original packaging.
Return procedure for DBLC05CI-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DBLC05CI-7 Tags
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