My Inquiry
My Account
Diodes Incorporated DBLC12CI-7
- Part No.:
- DBLC12CI-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
DBLC12CI-7.pdf
- Description:
- Dataline Protection PP SOD323 T&
- Quantity:
- Payment:
- Shipping:
Inventory:3,923
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
DBLC12CI-7 from Diodes Incorporated is a bidirectional ultra-low-capacitance TVS diode designed for ESD protection of high-speed data lines, featuring 12 V reverse working voltage, 0.6 pF typical input capacitance, ±27 kV contact/±30 kV air ESD rating per IEC 61000-4-2, and 10 A peak pulse current (8/20 µs), deployed in USB 2.0 and 10/100/1000BASE-T Ethernet interfaces.
For engineers reviewing the DBLC12CI-7 datasheet, DBLC12CI-7 pinout, DBLC12CI-7 application, or DBLC12CI-7 equivalent, this device is selected specifically for signal integrity–critical ESD clamping on single-channel high-speed digital lines where sub-1 pF capacitance and fast response to transient events are mandatory design requirements.
Technical Context
The DBLC12CI-7 implements a silicon avalanche diode structure optimized for bidirectional clamping with symmetrical breakdown at ±13.3 V (min), enabling robust protection against both positive and negative ESD transients without polarity constraints. Its low-junction-capacitance design achieves 0.6 pF at 0 V bias and 1 MHz, minimizing signal distortion on differential or single-ended data paths.
It operates across –55 °C to +150 °C and delivers 35 V clamping voltage at 10 A (8/20 µs), with thermal resistance of 500 °C/W and 250 mW power dissipation on standard FR-4 PCB layout-supporting reliable operation in compact, thermally constrained handheld and automotive-adjacent applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 12 V - Maximum continuous reverse operating voltage before leakage exceeds 1 µA; sets safe DC bias margin for protected line. |
| VBR (min) | 13.3 V - Minimum breakdown voltage at 1 mA; ensures clamping activates only above normal signal swing. |
| CIN (typ) | 0.6 pF - Junction capacitance at 0 V, 1 MHz; preserves signal integrity up to ~1 GHz in USB 2.0 and Fast Ethernet. |
| IPP (max) | 10 A - Peak pulse current under 8/20 µs waveform; withstands worst-case IEC 61000-4-2 ESD events. |
| VCL (at 10 A) | 35 V - Clamping voltage during 10 A transient; limits downstream IC stress to safe levels during ESD strike. |
| ESD Rating | ±27 kV contact / ±30 kV air - Complies with IEC 61000-4-2 Level 4; eliminates need for external ESD test margining. |
Pinout & Package
Package: SOD323 - ultra-compact surface-mount plastic package (1.30 × 1.70 mm body, 0.30 mm height), RoHS-compliant, halogen-free, matte tin-plated alloy 42 leadframe, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Input/Line Terminal | Bidirectional conduction path; connects to protected data line (e.g., USB D+, ETH TX+). |
| Cathode (Pin 2) | Ground Reference | Common return path to system ground plane; forms low-inductance clamping loop with PCB layout. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low input capacitance | 0.6 pF typ - Enables use on 480 Mbps USB 2.0 and 1000BASE-T without signal rise-time degradation. |
| Bidirectional ESD clamping | Symmetrical ±13.3 V breakdown - Protects AC-coupled or differential signals without polarity awareness. |
| IEC 61000-4-2 Level 4 compliance | ±27 kV contact / ±30 kV air - Meets highest industrial and consumer ESD immunity requirements out-of-box. |
| Green, lead-free construction | Halogen- and antimony-free, RoHS 3 compliant - Supports environmental compliance for global OEM shipments. |
Applications
| USB 2.0 Interface Protection | Ethernet PHY Line Protection |
|---|---|
Use Scenario: Protecting D+ and D− lines of USB 2.0 ports in smartphones, docking stations, and peripherals against user-hand ESD events. IC Role / Device Role: Bidirectional transient voltage suppressor placed directly at connector entry point. Use Value: 0.6 pF capacitance avoids signal integrity loss at 480 Mbps; ±27 kV contact rating ensures pass-fail reliability in production ESD testing. | Use Scenario: Shielding 10/100/1000BASE-T Ethernet transformer-coupled pairs (TX+/TX−, RX+/RX−) from cable-discharge events. IC Role / Device Role: Single-channel TVS per differential pair leg, mounted adjacent to magnetics module. Use Value: Low clamping voltage (35 V @ 10 A) prevents PHY IC latch-up; SOD323 footprint enables dense port-side layout. |
| Handheld Wireless Antenna Feedline | Industrial Sensor Interface |
Use Scenario: Guarding RF front-end antenna switch control lines or low-speed GPIOs in Bluetooth/Wi-Fi modules from board-level ESD coupling. IC Role / Device Role: Point-of-entry ESD clamp on microcontroller I/O routed near antenna traces. Use Value: 12 V VRWM aligns with 3.3 V logic rail; 0.6 pF avoids resonance shift in <300 MHz control paths. | Use Scenario: Securing RS-485/RS-232 transceiver data lines in factory automation controllers exposed to maintenance personnel ESD. IC Role / Device Role: Secondary protection stage after primary gas discharge tube or polymer PTC. Use Value: 10 A IPP handles combined surge energy; –55 °C to +150 °C operating range supports extended industrial temperature deployment. |
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 | 0.35 pF CIN, 12 V VRWM, ±30 kV ESD, SOD-323 | Lower capacitance but lower IPP (6 A); tighter VBR tolerance (12.5–13.5 V) | Preferred when signal bandwidth >1 GHz required; less robust for high-energy ESD environments. |
| ESD9X5.0ST5G | 0.8 pF CIN, 5 V VRWM, ±30 kV ESD, SOD-523 | Higher capacitance, lower working voltage, smaller package | Used for 3.3 V/5 V logic rails with space constraint; unsuitable for 12 V analog or Ethernet lines. |
Compared with SP1003-01UTG and ESD9X5.0ST5G, the DBLC12CI-7 uniquely balances 12 V VRWM headroom, 10 A surge capability, and 0.6 pF capacitance-making it optimal for mixed-signal interfaces like USB 2.0 and Gigabit Ethernet where voltage margin and bandwidth coexist as non-negotiable constraints.
Availability
DBLC12CI-7 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, 10/100/1000BASE-T Ethernet PHY line safeguarding, and handheld wireless system ESD hardening requiring stable component supply and full traceability.
Supply support for DBLC12CI-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, signal integrity, and power management solutions for industrial, computing, and consumer markets.
The DBLC12CI-7 belongs to Diodes' ultra-low-capacitance TVS portfolio, engineered specifically for ESD-hardened high-speed data interfaces where minimal parasitic loading and guaranteed IEC 61000-4-2 compliance are essential.
FAQ
What is the maximum clamping voltage of DBLC12CI-7 at 10 A?
The DBLC12CI-7 exhibits a maximum clamping voltage of 35 V under an 8/20 µs 10 A transient pulse, as specified in its electrical characteristics table. This value defines the upper voltage limit imposed on the protected line during worst-case ESD events, ensuring downstream ICs remain within absolute maximum ratings.
Can DBLC12CI-7 be used for USB 3.0 applications?
No-DBLC12CI-7 is not recommended for USB 3.0 SuperSpeed (5 Gbps) interfaces due to its 0.6 pF capacitance, which introduces measurable insertion loss above 1 GHz. It is validated for USB 2.0 (480 Mbps) and lower-frequency protocols such as UART, I²C, and 100BASE-TX where bandwidth demands are below 200 MHz.
Is DBLC12CI-7 qualified to AEC-Q200?
DBLC12CI-7 is not AEC-Q200 qualified per its official datasheet. While it operates from –55 °C to +150 °C and uses automotive-grade materials, Diodes explicitly states that AEC-Q200 qualification requires separate PPAP documentation and IATF 16949 manufacturing controls-available only upon direct request for designated automotive-grade variants.
How does the SOD323 package affect PCB layout for ESD performance?
The SOD323 package requires short, direct traces between the DBLC12CI-7 anode/cathode pins and the protected line/ground plane to minimize inductance. Diodes specifies a recommended pad layout with controlled copper area and thermal relief; deviation increases clamping voltage overshoot and reduces effective ESD suppression by up to 30% under IEC 61000-4-2 conditions.
DBLC12CI-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):
- 12V (Max)
- Voltage - Breakdown (Min):
- 13.3V
- Voltage - Clamping (Max) @ Ipp:
- 35V
- Current - Peak Pulse (10/1000µs):
- 10A (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
DBLC12CI-7 FAQ
1.How can I place an order for DBLC12CI-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DBLC12CI-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 DBLC12CI-7 reliable?
The price and inventory of DBLC12CI-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DBLC12CI-7 is usually 5 days.
3.What payment methods are accepted for DBLC12CI-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DBLC12CI-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DBLC12CI-7?
DBLC12CI-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DBLC12CI-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 DBLC12CI-7?
For technical support, including DBLC12CI-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DBLC12CI-7 requirements.
6.How does Aetrix verify that DBLC12CI-7 is sourced from the original manufacturer or authorized distributors?
All DBLC12CI-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 DBLC12CI-7 meets industry standards.
7.What is the process for return or replacement of DBLC12CI-7?
All DBLC12CI-7 units undergo pre-shipment inspection (PSI). If there is an issue with DBLC12CI-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 DBLC12CI-7 part is unused and in its original packaging.
Return procedure for DBLC12CI-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DBLC12CI-7 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
