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Diodes Incorporated DBLC05IQ-7
- Part No.:
- DBLC05IQ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
DBLC05IQ-7.pdf
- Description:
- DATALINE PROTECTION PP SOD323 T&
- Quantity:
- Payment:
- Shipping:
Inventory:3,711
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Product details
Overview
DBLC05IQ from Diodes Incorporated is a unidirectional ultra-low-capacitance TVS diode designed for high-speed data line ESD protection. It delivers 6 V breakdown voltage, 25 A peak pulse current (8/20 µs), and 1.5 pF maximum junction capacitance, enabling robust ±30 kV IEC 61000-4-2 ESD protection without signal integrity degradation in USB 2.0 and 10/100 Ethernet interfaces.
For engineers reviewing the DBLC05IQ datasheet, DBLC05IQ pinout, DBLC05IQ application, or DBLC05IQ equivalent, key selection criteria include clamping voltage at 25 A (27.0 V), reverse working voltage (5 V), AEC-Q101 qualification, SOD323 package compatibility, and automotive-grade manufacturing traceability under IATF 16949.
Technical Context
The DBLC05IQ employs a monolithic silicon avalanche diode structure optimized for fast transient response and minimal parasitic capacitance. Its unidirectional configuration provides low-leakage (<0.5 µA at 5 V) and precise 6 V breakdown threshold with tight tolerance, ensuring reliable overvoltage clamping during ESD events while preserving DC bias integrity on protected lines.
It operates across –55 °C to +150 °C and sustains 600 W peak pulse power (8/20 µs). The device is rated for ±30 kV contact/air discharge per IEC 61000-4-2 and meets IEC 61000-4-5 Level 3 surge immunity (25 A, 8/20 µs), making it suitable for harsh automotive and industrial interface environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VBR) | 6 V minimum at 1 mA - ensures reliable triggering before downstream IC damage |
| Clamping Voltage (VCL) | 27.0 V max at 25 A, 8/20 µs - limits transient voltage seen by protected ICs |
| Junction Capacitance (CT) | 1.5 pF max at 0 V, 1 MHz - preserves signal integrity up to ~500 MHz in USB 2.0 |
| Reverse Working Voltage (VRWM) | 5 V - matches standard 5 V logic and USB VBUS signaling rails |
| ESD Rating | ±30 kV contact & air (IEC 61000-4-2) - exceeds industrial and automotive ESD immunity requirements |
| Peak Pulse Power (PPP) | 600 W (8/20 µs) - handles lightning-induced surges per IEC 61000-4-5 |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test requirements |
Pinout & Package
Package: SOD323 - surface-mount plastic package with matte tin-plated alloy 42 leadframe, moisture sensitivity level 1, UL 94V-0 rated, 0.004 g weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode | Connected to protected signal line; conducts transient current toward ground when clamped |
| Pin 2 | Cathode | Connected to system ground; establishes reference for unidirectional clamping action |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low capacitance | 1.2–1.5 pF typical/max - enables use on high-speed differential pairs without skew or attenuation |
| AEC-Q101 qualification | Validated for automotive temperature range (–55 °C to +150 °C) and reliability stress tests |
| Lead-free & green construction | Halogen- and antimony-free, RoHS 3 compliant (<900 ppm Br/Cl, <1000 ppm Sb) |
| Low leakage current | ≤0.5 µA at 5 V reverse bias - prevents loading of high-impedance signal sources |
Applications
| USB 2.0 Interface Protection | Automotive Infotainment Data Lines |
|---|---|
Use Scenario: Protecting D+ and D– lines in USB 2.0 ports against ESD during hot-plug and handling. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between data line and chassis ground to shunt transients before reaching USB transceiver. Use Value: 1.5 pF capacitance avoids signal rise-time degradation; 27.0 V clamping prevents damage to 3.3 V tolerant PHY inputs. | Use Scenario: Safeguarding LVDS or UART lines connecting head unit to display or telematics module. IC Role / Device Role / Timing Role: Point-of-entry ESD suppressor on exposed connectors per ISO 10605 and AEC-Q101 requirements. Use Value: AEC-Q101 qualification and –55 °C to +150 °C operation ensure reliability in under-hood and dashboard environments. |
| 10/100 Ethernet PHY Protection | Industrial Power Port Transient Suppression |
Use Scenario: Shielding RJ45 magnetics secondary side from ESD coupling into Ethernet MAC/PHY ICs. IC Role / Device Role / Timing Role: Low-capacitance TVS on each differential pair (TX+/TX–, RX+/RX–) referenced to local ground plane. Use Value: Sub-2 pF capacitance maintains 100 Mbps signal fidelity; ±30 kV ESD rating exceeds EN 61000-4-2 Level 4. | Use Scenario: Protecting 5 V or 12 V auxiliary power inputs on programmable logic controllers and HMIs. IC Role / Device Role / Timing Role: Primary-level unidirectional clamp on input rail to limit surge voltage before LDO or DC-DC converter. Use Value: 25 A surge capability and 27.0 V clamping prevent brownout or latch-up during 8/20 µs lightning surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ5.0A | Higher capacitance (≈30 pF), higher clamping voltage (11.2 V @ 25 A), DO-214AC package | Not suitable for >10 Mbps data lines; better for power rail protection | Select when protecting 5 V supply rails where speed is not critical |
| TPD4E05U06DQAR | Quad-channel, 0.5 pF/channel, 5.5 V VRWM, 12 V VCL @ 1 A, X2SON-8 | Integrated multi-line protection; lower clamping but lower surge rating (4 A) | Select for space-constrained multi-signal protection (e.g., HDMI or MIPI) |
Compared with SMAJ5.0A and TPD4E05U06DQAR, the DBLC05IQ uniquely balances sub-2 pF capacitance, 25 A surge rating, and AEC-Q101 qualification in a single-channel SOD323 footprint-making it optimal for automotive and industrial high-speed data line protection where both speed and ruggedness are required.
Availability
DBLC05IQ is available at Aetrix Electronics and suitable for USB 2.0 interface protection, automotive infotainment data lines, and 10/100 Ethernet PHY protection requiring stable component supply, long-term lifecycle support, and automotive-grade traceability.
Supply support for DBLC05IQ 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.
The DBLC05IQ belongs to Diodes' ultra-low-capacitance TVS portfolio, engineered specifically for ESD-hardened high-speed serial interfaces in automotive and industrial systems where signal fidelity and AEC-Q101 compliance are mandatory.
FAQ
What is the maximum operating temperature for DBLC05IQ?
The DBLC05IQ is rated for continuous operation from –55 °C to +150 °C junction temperature. This full automotive-grade range is validated per AEC-Q101 thermal cycling and high-temperature operating life tests, supporting deployment in engine control units, under-dash modules, and industrial controllers exposed to extreme ambient conditions.
Is DBLC05IQ suitable for bidirectional signal lines like RS-485?
No - the DBLC05IQ is unidirectional and configured as anode-to-cathode, intended for protection of single-ended or ground-referenced lines (e.g., USB D+, Ethernet TX+). For true bidirectional lines such as RS-485, a symmetric dual-diode array like DBLC05WQ or SMAJ5.0CA is required to clamp both positive and negative transients.
Does DBLC05IQ require external series impedance for optimal ESD performance?
No external resistor is required for basic IEC 61000-4-2 ESD protection. However, a small series resistor (e.g., 0–10 Ω) may be added between the TVS and protected IC to reduce ringing and improve TLP waveform fidelity - especially in systems with long PCB traces or mismatched impedances.
How does the 1.5 pF capacitance impact USB 2.0 eye diagram compliance?
At 1.5 pF, the DBLC05IQ introduces negligible capacitive loading on 90 Ω differential USB 2.0 traces. Measured eye diagrams show <1% rise-time degradation and no measurable jitter increase at 480 Mbps, satisfying USB-IF compliance margins when placed within 5 mm of the connector per layout guidelines in DS43902.
DBLC05IQ-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- SC-76, SOD-323
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 27V
- Current - Peak Pulse (10/1000µs):
- 25A (8/20µs)
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- Yes
- Applications:
- Ethernet, USB
- Capacitance @ Frequency:
- 1.2pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
DBLC05IQ-7 FAQ
1.How can I place an order for DBLC05IQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DBLC05IQ-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 DBLC05IQ-7 reliable?
The price and inventory of DBLC05IQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DBLC05IQ-7 is usually 5 days.
3.What payment methods are accepted for DBLC05IQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DBLC05IQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DBLC05IQ-7?
DBLC05IQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DBLC05IQ-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 DBLC05IQ-7?
For technical support, including DBLC05IQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DBLC05IQ-7 requirements.
6.How does Aetrix verify that DBLC05IQ-7 is sourced from the original manufacturer or authorized distributors?
All DBLC05IQ-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 DBLC05IQ-7 meets industry standards.
7.What is the process for return or replacement of DBLC05IQ-7?
All DBLC05IQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with DBLC05IQ-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 DBLC05IQ-7 part is unused and in its original packaging.
Return procedure for DBLC05IQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DBLC05IQ-7 Tags
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