My Inquiry
My Account
Diodes Incorporated SD15CQ-7
- Part No.:
- SD15CQ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
SD15CQ-7.pdf
- Description:
- General Protection PP SOD323 T&R
- Quantity:
- Payment:
- Shipping:
Inventory:6,839
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SD15CQ-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 360W peak pulse power, clamps at ≤22V under 1A surge, exhibits 44pF typical channel capacitance, and meets IEC 61000-4-2 ±30kV contact/air discharge requirements - enabling robust protection in USB 2.0, HDMI, and audio interface paths.
For engineers reviewing the SD15CQ-7 datasheet, SD15CQ-7 pinout, SD15CQ-7 application, or SD15CQ-7 equivalent, key selection criteria include bidirectional clamping capability, ultra-low 44pF input capacitance for signal integrity preservation, AEC-Q101 qualification for automotive infotainment interfaces, and SOD323 package compatibility with space-constrained PCB layouts.
Technical Context
This TVS diode operates in bidirectional avalanche mode to suppress both positive and negative transients without polarity dependency. Its low 15V reverse standoff voltage (VRWM) and 16.7V minimum breakdown voltage (VBR) ensure reliable triggering before downstream IC damage thresholds are exceeded.
The device uses silicon avalanche junction technology optimized for fast response (<1ns), with clamping performance validated across 8/20µs (IEC 61000-4-5) and 10/100ns TLP waveforms. Thermal resistance of 500°C/W and 250mW steady-state power dissipation reflect its suitability for low-power, surface-mount applications on FR-4 PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 360W (8/20µs waveform): sustains lightning-induced surges per IEC 61000-4-5 Level 3 without failure |
| Clamping Voltage (IPP = 1A) | ≤22V: limits voltage seen by protected IC to safe operating range during ESD event |
| Channel Capacitance | 44pF @ 0V, 1MHz: preserves signal integrity on USB 2.0 (480Mbps) and audio differential pairs |
| ESD Rating | ±30kV air / ±30kV contact (IEC 61000-4-2): exceeds industrial and consumer immunity requirements |
| Breakdown Voltage | 16.7V min @ 1mA: ensures precise, repeatable conduction onset above 15V system rail |
| Operating Temperature | –65°C to +150°C: supports deployment in automotive cabin and industrial edge environments |
Pinout & Package
Package: SOD323 - ultra-compact surface-mount plastic package (1.30 × 1.70 × 0.95 mm), RoHS-compliant, halogen-free, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode (Bidirectional Terminal A) | Connects to protected signal line; forms symmetrical avalanche path with Pin 2 |
| Pin 2 | Cathode (Bidirectional Terminal B) | Connects to ground or reference plane; completes low-inductance ESD current return path |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional ESD protection | Enables single-device protection of AC-coupled or differential signals (e.g., USB D+/D–, HDMI TMDS) without polarity concerns |
| AEC-Q101 qualified | Validated for automotive infotainment and telematics modules requiring PPAP documentation and IATF 16949 manufacturing control |
| Ultra-low 44pF capacitance | Minimizes signal distortion and insertion loss on high-speed interfaces up to 480Mbps |
| Lead-free & green construction | Meets RoHS 3 (2015/863/EU), <900ppm Br/Cl, <1000ppm Sb - compliant with automotive and consumer environmental mandates |
Applications
| USB 2.0 Interface Protection | HDMI Signal Line Protection |
|---|---|
Use Scenario: Protecting D+ and D– lines in smartphone charging ports and OTG adapters from repeated ESD events. IC Role / Device Role: Bidirectional TVS clamp placed directly at connector, shunting ESD current to ground before it reaches USB transceiver. Use Value: 44pF capacitance avoids signal rise-time degradation, maintaining full 480Mbps compliance while surviving >10,000 ±30kV contact discharges. |
Use Scenario: Safeguarding TMDS clock and data channels in portable projectors and docking stations exposed to user-handling ESD. IC Role / Device Role: Low-capacitance TVS deployed per-channel between source SoC and HDMI receptacle. Use Value: Clamping ≤22V at 1A ensures HDMI PHY remains within absolute maximum ratings during hot-plug transients. |
| Automotive Infotainment Audio | Industrial Touchscreen Controller |
Use Scenario: Protecting analog audio inputs (e.g., AUX-in, microphone bias lines) in vehicle head units subjected to cabin ESD. IC Role / Device Role: Bidirectional clamp on unbalanced audio traces, referenced to chassis ground. Use Value: AEC-Q101 qualification guarantees reliability over –40°C to +105°C ambient, with no parameter drift after thermal cycling. |
Use Scenario: Shielding I²C and GPIO lines connecting capacitive touch controller to display module in factory HMIs. IC Role / Device Role: Point-of-entry TVS on each signal line, minimizing stub inductance via SOD323 placement adjacent to connector. Use Value: 360W surge rating withstands electrostatic discharges from operators wearing synthetic clothing in dry industrial environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A (ON Semiconductor) | Unidirectional; 15V VRWM; 400W PPP; 100pF CT | Requires external polarity management; unsuitable for AC-coupled or differential lines | Select only when protecting DC-biased single-ended lines where polarity is fixed and capacitance >60pF is acceptable |
| SP1006-01UTG (Littelfuse) | Bidirectional; 14V VRWM; 300W PPP; 35pF CT; SOD-323 | Lower clamping voltage (20V @ 1A) but reduced surge capacity; not AEC-Q101 qualified | Prefer for cost-sensitive consumer wearables where automotive qualification is unnecessary and tighter clamping is prioritized |
Compared with SMAJ15A and SP1006-01UTG, SD15CQ-7 uniquely balances bidirectional operation, AEC-Q101 compliance, and 44pF capacitance - making it the only option among the three qualified for automotive infotainment signal protection with USB/HDMI speed support.
Availability
SD15CQ-7 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, automotive infotainment audio lines, and industrial touchscreen controller I/O requiring stable component supply across production lifecycles.
Supply support for SD15CQ-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, manufacturing, and sales operations across Asia, Europe, and North America.
The SD15CQ belongs to Diodes' "Ultra-Low Capacitance TVS" product line, engineered specifically for high-speed digital interface protection in portable and automotive electronics where signal fidelity and ESD robustness must coexist.
FAQ
What is the maximum clamping voltage of SD15CQ-7 at 12A surge current?
The SD15CQ-7 clamps to ≤30V at 12A peak pulse current (8/20µs waveform), as specified in the Electrical Characteristics table. This value ensures protected ICs remain within safe operating voltage limits during severe lightning-surge events, and is verified per IEC 61000-4-5 testing methodology.
Can SD15CQ-7 be used on a 3.3V logic line?
Yes - its 15V reverse standoff voltage (VRWM) provides ample margin above 3.3V system rails, preventing leakage or false triggering during normal operation. The 16.7V minimum breakdown voltage ensures reliable conduction only during actual overvoltage events, preserving signal integrity.
Does SD15CQ-7 require a heatsink for continuous operation?
No - the SD15CQ-7 is rated for 250mW steady-state power dissipation on standard FR-4 PCBs with recommended pad layout. Its 500°C/W junction-to-ambient thermal resistance is sufficient for ESD transient duty cycles (typically <1% duty), eliminating need for additional thermal management.
How does the SOD323 package affect PCB layout for optimal ESD performance?
The SOD323 footprint minimizes parasitic inductance when placed directly at the protected connector. To maximize effectiveness, route traces from Pin 1 and Pin 2 to the signal line and ground plane with minimal length (<2mm), avoid vias near the device, and use solid ground pour beneath the package - all supported by Diodes' published SOD323 pad layout guidelines.
SD15CQ-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):
- 15V (Max)
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 30V
- Current - Peak Pulse (10/1000µs):
- 12A (8/20µs)
- Power - Peak Pulse:
- 360W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 44pF @ 1MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
SD15CQ-7 FAQ
1.How can I place an order for SD15CQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for SD15CQ-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 SD15CQ-7 reliable?
The price and inventory of SD15CQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SD15CQ-7 is usually 5 days.
3.What payment methods are accepted for SD15CQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SD15CQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SD15CQ-7?
SD15CQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SD15CQ-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 SD15CQ-7?
For technical support, including SD15CQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SD15CQ-7 requirements.
6.How does Aetrix verify that SD15CQ-7 is sourced from the original manufacturer or authorized distributors?
All SD15CQ-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 SD15CQ-7 meets industry standards.
7.What is the process for return or replacement of SD15CQ-7?
All SD15CQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with SD15CQ-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 SD15CQ-7 part is unused and in its original packaging.
Return procedure for SD15CQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SD15CQ-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
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…
Engineering guide to output capacitor selection for ASIC Vcore rails, covering bulk capacitors, polymer capacitors, MLCC decoupling, DC bias, ESR, ESL, placement, transient response and substitution ri…
Engineering guide to high-current ASIC Vcore rails, covering 12-phase buck architecture, PMBus control, dynamic load testing, output capacitor networks, smart power stage selection, thermal design and …
Voltage regulator guide covering linear, LDO, 7805, Zener, adjustable, buck, VRM and alternator regulators, with design checks, testing methods, troubleshooting and datasheet-based selection.
Amplifier guide covering voltage, current and power amplification, gain, feedback, amplifier classes, audio and RF applications, op-amp circuits, transimpedance amplifiers, datasheet selection and trou…
Machine vision system guide covering components, inspection workflow, camera and lens selection, FOV, pixel resolution, motion blur, strobe lighting, bandwidth, 2D/3D vision, integration, troubleshooti…
