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Diodes Incorporated SD03C-7
- Part No.:
- SD03C-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
SD03C-7.pdf
- Description:
- TVS DIODE 3VWM 11VC SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:13,697
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Product details
Overview
SD03C-7 from Diodes Incorporated is a bidirectional 600W transient voltage suppression (TVS) diode designed for ESD protection of high-speed data lines in portable electronics. It features a 4V minimum breakdown voltage, 55A peak pulse current (8/20µs), 150pF typical channel capacitance, and ±30kV IEC 61000-4-2 contact/air discharge rating - deployed in USB, HDMI, and audio interfaces of smartphones and digital cameras.
For engineers reviewing the SD03C-7 datasheet, SD03C-7 pinout, SD03C-7 application, or SD03C-7 equivalent, key selection criteria include clamping voltage at 10A (5.7V), low leakage (<1µA at 3.3V), SOD323 package thermal resistance (500°C/W), and compliance with automotive-grade change control requirements upon request.
Technical Context
This TVS diode operates in bidirectional avalanche mode to clamp transient overvoltages across signal lines without polarity constraints. Its 3.3V reverse standoff voltage and 4.0V minimum breakdown ensure reliable protection margin below 3.6V logic rails while maintaining low capacitive loading on high-frequency paths.
The device uses a planar junction structure in a molded SOD323 package with matte tin-plated alloy-42 leads, enabling robust solderability and moisture resistance (J-STD-020 Level 1). Thermal derating follows a linear curve from 250mW at 25°C to zero at 150°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W (8/20µs waveform): sustains lightning-surge-level transients per IEC 61000-4-5) |
| Breakdown Voltage (VBR) | 4.0V min @ 1mA: ensures triggering before damage to 3.3V I/O pins |
| Clamping Voltage | 5.7V @ 10A: limits voltage seen by protected IC during surge event |
| Channel Capacitance | 150pF @ 0V, 1MHz: preserves signal integrity on USB 2.0 and audio lines |
| ESD Rating | ±30kV contact/air (IEC 61000-4-2): exceeds industrial immunity requirements |
| Leakage Current | <1µA @ 3.3V: avoids DC loading on battery-powered sensor interfaces |
Pinout & Package
Package: SOD323 - surface-mount plastic case, 1.30mm × 1.70mm × 0.95mm body, matte tin-plated alloy-42 leads, JEDEC-compliant footprint, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current sink (bidirectional) | Accepts positive or negative surges relative to cathode; symmetric conduction path |
| Cathode | Transient current sink (bidirectional) | Completes low-impedance path during both polarity surges; no polarity marking required |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional ESD protection | Enables single-device protection of AC-coupled or differential signal pairs (e.g., USB D+/D−) without polarity concerns |
| Ultra-low input capacitance | 150pF typical minimizes signal distortion on 480Mbps USB 2.0 channels and analog audio paths |
| Lead-free & halogen-free construction | Meets RoHS 3 (2015/863/EU) and "Green" definition (<900ppm Br/Cl, <1000ppm Sb) for eco-sensitive consumer programs |
| High surge capability | 55A peak pulse current supports repeated exposure to system-level ESD events without parameter shift |
Applications
| USB 2.0 Interface Protection | HDMI Signal Line Protection |
|---|---|
Use Scenario: Protecting D+ and D− lines in smartphone USB ports against user-handling ESD. IC Role / Device Role / Timing Role: Bidirectional TVS placed directly at connector, clamping transients before they reach USB transceiver PHY. Use Value: 150pF capacitance avoids eye diagram degradation; ±30kV rating prevents latch-up in host controller during plug/unplug cycles. | Use Scenario: Shielding TMDS clock and data lanes in portable media players from cable-discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS mounted adjacent to HDMI receptacle to suppress fast-rising transients without affecting 165MHz pixel clock integrity. Use Value: 5.7V clamping at 10A ensures downstream serializer IC remains within absolute maximum ratings during hot-plug surges. |
| Digital Camera Audio Jack | MP3 Player Headphone Output |
Use Scenario: Guarding 3.5mm TRRS microphone and ground lines in compact digital cameras against ESD during accessory insertion. IC Role / Device Role / Timing Role: Dual-channel bidirectional TVS applied across mic bias and return paths to prevent pop-noise and ADC saturation. Use Value: Sub-1µA leakage preserves battery life in always-on mic bias circuits; 4V VBR avoids false triggering during normal 2.8V mic bias operation. | Use Scenario: Safeguarding stereo headphone outputs in flash-based MP3 players from user-induced static discharge. IC Role / Device Role / Timing Role: Back-to-back TVS configuration on left/right output lines to absorb ±30kV air discharges without clipping audio waveforms. Use Value: Symmetric clamping ensures balanced distortion suppression; 150pF load maintains >20kHz frequency response up to 100Ω source impedance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ3.3A | Unidirectional; 3.3V VRWM; 600W PPP; 100pF CT | Requires external polarity management; lower capacitance but unsuitable for AC-coupled lines | Select only when protecting DC-biased single-ended signals with known polarity |
| TPD2E001DRYR | 2-channel array; 12pF CT; ±8kV ESD; 3.6V VBR | Lower surge rating (3A IPP); optimized for high-speed digital, not system-level ESD | Prefer for USB 3.0 or MIPI where ultra-low capacitance outweighs surge robustness |
Compared with SMAJ3.3A and TPD2E001DRYR, SD03C-7 uniquely balances 55A surge handling, bidirectional symmetry, and 150pF capacitance - making it optimal for cost-sensitive, space-constrained portable designs requiring full IEC 61000-4-2 compliance without layout complexity.
Availability
SD03C-7 is available at Aetrix Electronics and suitable for cellular handsets, portable electronics, and computers and peripheral designs requiring stable component supply with guaranteed long-term manufacturability.
Supply support for SD03C-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, headquartered in Plano, Texas, serving industrial, computing, consumer, and communications markets since 1964.
The SD03C belongs to Diodes' TVS Diode family engineered specifically for board-level ESD hardening in high-density portable systems - emphasizing low capacitance, bidirectional symmetry, and qualification-ready packaging.
FAQ
What is the maximum operating temperature for SD03C-7?
The SD03C-7 is rated for continuous operation from −65°C to +150°C junction temperature. Its thermal resistance (RθJA = 500°C/W) assumes mounting on a standard FR-4 PCB with 2oz copper; derating begins linearly above 25°C ambient, reaching zero power dissipation at 150°C.
Does SD03C-7 meet automotive qualification standards?
SD03C-7 is not pre-qualified to AEC-Q101, but Diodes Incorporated offers automotive-grade variants (e.g., SD03CQ-7) with PPAP documentation, IATF 16949 manufacturing, and extended temperature screening. Customers requiring automotive use must request formal qualification support through Diodes' sales channel.
How does SD03C-7's clamping voltage compare at different surge currents?
Per DS41685 Rev. 3–2, SD03C-7 clamps to 5.0V at 1A, 5.7V at 10A, and 11.0V at 55A (8/20µs pulse). This progressive rise reflects silicon junction behavior under high-current stress and confirms design margin for 3.3V systems even at worst-case surge levels.
Can SD03C-7 be used in place of a unidirectional TVS in DC-biased circuits?
Yes - SD03C-7 functions reliably in DC-biased applications (e.g., 3.3V UART lines) due to its 3.3V reverse standoff voltage and symmetric IV curve. Its bidirectional nature adds no penalty in such cases and simplifies inventory by eliminating polarity-specific variants.
SD03C-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- SC-76, SOD-323
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 3V (Max)
- Voltage - Breakdown (Min):
- 4V
- Voltage - Clamping (Max) @ Ipp:
- 11V
- Current - Peak Pulse (10/1000µs):
- 55A (8/20µs)
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 150pF @ 1MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
SD03C-7 FAQ
1.How can I place an order for SD03C-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for SD03C-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 SD03C-7 reliable?
The price and inventory of SD03C-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SD03C-7 is usually 5 days.
3.What payment methods are accepted for SD03C-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SD03C-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SD03C-7?
SD03C-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SD03C-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 SD03C-7?
For technical support, including SD03C-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SD03C-7 requirements.
6.How does Aetrix verify that SD03C-7 is sourced from the original manufacturer or authorized distributors?
All SD03C-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 SD03C-7 meets industry standards.
7.What is the process for return or replacement of SD03C-7?
All SD03C-7 units undergo pre-shipment inspection (PSI). If there is an issue with SD03C-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 SD03C-7 part is unused and in its original packaging.
Return procedure for SD03C-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SD03C-7 Tags
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Diodes Incorporated
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Diodes Incorporated
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