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Diodes Incorporated SD15C-7
- Part No.:
- SD15C-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
SD15C-7.pdf
- Description:
- TVS DIODE 15VWM 27VC SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:11,893
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Product details
Overview
SD15C-7 from Diodes Incorporated is a bidirectional transient voltage suppression (TVS) diode designed for ESD protection of high-speed data lines in portable electronics. It delivers 320W peak pulse power, clamps at ≤27V under 12A 8/20µs surge, and features 44pF typical channel capacitance with 16.7V minimum breakdown voltage - enabling robust protection without signal integrity degradation in USB, audio, and camera interfaces.
For engineers reviewing the SD15C-7 datasheet, SD15C-7 pinout, SD15C-7 application, or SD15C-7 equivalent, this device is selected for low-capacitance bidirectional ESD hardening in space-constrained consumer interfaces where ±30kV IEC 61000-4-2 compliance, SOD323 footprint compatibility, and sub-1µA leakage at 15V standoff are critical design requirements.
Technical Context
This TVS operates in bidirectional avalanche mode to clamp both positive and negative transients symmetrically across its terminals, eliminating polarity dependency in differential or AC-coupled signal paths. Its 44pF junction capacitance and 15V reverse standoff voltage are optimized for USB 2.0, HDMI DDC, and audio jack ESD protection without loading high-frequency signals.
The device uses a planar silicon junction structure in an SOD323 package with matte tin-plated alloy 42 leads, achieving thermal resistance of 500°C/W on FR-4 and stable operation from –65°C to +150°C. Power derating follows a linear curve above 25°C ambient, maintaining 250mW continuous dissipation at room temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 320W (8/20µs waveform): sustains lightning-like surges per IEC 61000-4-5 without failure |
| Breakdown Voltage | 16.7V min @ 1mA: ensures reliable conduction onset above 15V system operating rail |
| Clamping Voltage | 27V max @ 12A: limits downstream IC stress to safe levels during worst-case ESD events |
| Channel Capacitance | 44pF typ @ 0V, 1MHz: preserves signal rise time in USB 2.0 (480Mbps) and audio paths |
| ESD Rating | ±30kV contact & air (IEC 61000-4-2): exceeds industrial immunity requirements for handheld ports |
| Leakage Current | ≤1µA @ 15V VRWM: avoids battery drain in always-on mobile peripheral circuits |
Pinout & Package
Package: SOD323 - surface-mount plastic case (2.5mm × 1.3mm × 1.0mm), UL 94V-0 rated, moisture sensitivity level 1, 0.004g weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative surge) | Conducts during negative ESD events; symmetrical with cathode for bidirectional clamping |
| Cathode | Transient current entry (positive surge) | Conducts during positive ESD events; forms low-impedance path to ground when VBR exceeded |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional ESD protection | Clamps ±30kV surges identically on both polarities - eliminates need for dual-diode placement in AC-coupled lines |
| Ultra-low input capacitance | 44pF typical enables use on 480Mbps USB 2.0 D+/D− without eye diagram degradation |
| Lead-free & halogen-free construction | Meets RoHS 3 (2015/863/EU) and "Green" definition (<900ppm Br/Cl, <1000ppm Sb) for eco-compliant end products |
| SOD323 footprint compatibility | Standardized 2-pin package allows drop-in replacement in existing PCB layouts targeting space-constrained mobile designs |
Applications
| USB 2.0 Interface Protection | Smartphone Audio Jack ESD Hardening |
|---|---|
Use Scenario: Protecting D+ and D− lines of USB 2.0 ports against repeated ESD events during cable insertion/removal. IC Role / Device Role: Bidirectional TVS placed between data line and ground, clamping transients before they reach USB transceiver IC. Use Value: 44pF capacitance maintains signal integrity up to 480Mbps; 27V clamping prevents damage to 3.3V-tolerant PHY circuitry. |
Use Scenario: Shielding 3.5mm TRRS audio jacks in smartphones from user-hand ESD during plug insertion. IC Role / Device Role: Two SD15C-7 devices deployed across left/right/ground/mic lines to suppress ±30kV contact discharges. Use Value: Symmetrical clamping ensures no DC bias shift; sub-1µA leakage avoids interference with analog microphone bias networks. |
| Digital Camera Sensor Interface | Portable HDD/SSD SATA Data Lines |
Use Scenario: Guarding MIPI CSI-2 differential pairs connecting image sensor to processor in compact digital cameras. IC Role / Device Role: One SD15C-7 per differential pair (anode/cathode tied to each line), referenced to common ground. Use Value: Low 44pF load minimizes jitter on 1Gbps+ serial links; 16.7V VBR avoids false triggering near 1.8V/2.8V I/O rails. |
Use Scenario: Protecting SATA TX/RX differential lanes in external SSD enclosures exposed to frequent handling. IC Role / Device Role: TVS placed on each lane with cathode/anode connected to respective signal and chassis ground. Use Value: 320W surge rating handles multiple ESD strikes over product lifetime; SOD323 size fits tight 2.5″ drive PCB real estate. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15CA | Higher 100pF capacitance, SMA package (4.5mm × 2.7mm), 400W PPP | Unsuitable for >100Mbps interfaces due to capacitance; better for power-rail protection | Select when board space permits larger package and lower frequency signal lines dominate |
| TPD2E001DRYR | 2-channel array, 15pF/channel, 5V VRWM, 12V VBR, DRY (SOT-553) package | Optimized for 5V logic; insufficient clamping margin for 15V-tolerant analog/audio paths | Prefer for multi-line 3.3V/5V digital I/O protection where ultra-low capacitance is primary requirement |
Compared with SMAJ15CA and TPD2E001DRYR, SD15C-7 uniquely balances 44pF capacitance, 15V standoff, and SOD323 size - making it the only option validated for 480Mbps USB 2.0 and 1.8V–3.3V analog audio protection in same-footprint constraints.
Availability
SD15C-7 is available at Aetrix Electronics and suitable for USB interface protection, smartphone audio jack hardening, and digital camera sensor interface applications requiring stable component supply and full RoHS 3 compliance.
Supply support for SD15C-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, with design and manufacturing operations across Asia and the Americas.
SD15C-7 belongs to Diodes' TVS Diode family engineered specifically for high-density ESD protection in portable consumer electronics - emphasizing low capacitance, bidirectional symmetry, and ultra-small packaging for next-generation handheld devices.
FAQ
What is the maximum clamping voltage of SD15C-7 at 12A surge current?
The SD15C-7 clamps to a maximum of 27V under a 12A, 8/20µs surge current condition, as specified in the Electrical Characteristics table. This value ensures downstream 3.3V or 5V ICs remain within absolute maximum ratings during worst-case ESD events.
Can SD15C-7 be used on single-ended 3.3V GPIO lines?
Yes - its 15V reverse standoff voltage and 16.7V minimum breakdown provide sufficient margin above 3.3V logic rails while maintaining low leakage (<1µA). The bidirectional configuration protects against both positive and negative transients without polarity concerns.
Does SD15C-7 meet automotive AEC-Q200 requirements?
No - SD15C-7 is qualified for commercial temperature range (–65°C to +150°C) but is not AEC-Q200 stress-tested or certified. For automotive infotainment or body control modules, Diodes' AEC-Q200-qualified PUSB3FR series is recommended instead.
How does the SOD323 package affect thermal performance in high-density PCB layouts?
With a thermal resistance of 500°C/W on standard FR-4 (2oz copper), the SOD323 package requires careful layout: minimum 10mm² copper pour per pad and thermal vias to inner ground planes are recommended to sustain repetitive 320W surges without junction overheating.
SD15C-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):
- 15V (Max)
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 27V
- Current - Peak Pulse (10/1000µs):
- 12A (8/20µs)
- Power - Peak Pulse:
- 320W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 44pF @ 1MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
SD15C-7 FAQ
1.How can I place an order for SD15C-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for SD15C-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 SD15C-7 reliable?
The price and inventory of SD15C-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SD15C-7 is usually 5 days.
3.What payment methods are accepted for SD15C-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SD15C-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SD15C-7?
SD15C-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SD15C-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 SD15C-7?
For technical support, including SD15C-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SD15C-7 requirements.
6.How does Aetrix verify that SD15C-7 is sourced from the original manufacturer or authorized distributors?
All SD15C-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 SD15C-7 meets industry standards.
7.What is the process for return or replacement of SD15C-7?
All SD15C-7 units undergo pre-shipment inspection (PSI). If there is an issue with SD15C-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 SD15C-7 part is unused and in its original packaging.
Return procedure for SD15C-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SD15C-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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