My Inquiry
My Account
Diodes Incorporated SD12CQ-7
- Part No.:
- SD12CQ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
SD12CQ-7.pdf
- Description:
- Surge Protection PP SOD323 T&R 3
- Quantity:
- Payment:
- Shipping:
Inventory:9,636
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SD12CQ-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 ≤24V under 15A 8/20µs surge, and features ultra-low 52.6pF channel capacitance - enabling use on USB 2.0, HDMI, and audio interfaces in smartphones and digital cameras.
For engineers reviewing the SD12CQ-7 datasheet, SD12CQ-7 pinout, SD12CQ-7 application, or SD12CQ-7 equivalent, key selection criteria include IEC 61000-4-2 ±30kV contact/air ESD rating, bidirectional clamping symmetry, low capacitance for signal integrity, AEC-Q101 qualification for automotive infotainment, and SOD323 footprint compatibility with space-constrained PCB layouts.
Technical Context
This TVS diode operates in bidirectional avalanche mode to clamp both positive and negative transients symmetrically across its terminals. Its 13V minimum breakdown voltage (VBR) and 12V reverse standoff (VRWM) ensure reliable operation below system supply rails while maintaining fast response to sub-nanosecond ESD events.
The device uses silicon avalanche junction technology optimized for low dynamic capacitance and minimal leakage (<1µA at 12V), making it suitable for protecting high-frequency analog and digital I/O without signal distortion or timing skew.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 360W (8/20µs waveform): sustains lightning-surge-level energy without failure in IEC 61000-4-5 applications |
| Breakdown Voltage (VBR) | 13.0V min @ 1mA: ensures robust margin above 12V system rail before conduction begins |
| Clamping Voltage (VCL) | 24V max @ 15A 8/20µs: limits downstream IC voltage stress during worst-case surge |
| Channel Capacitance (CT) | 52.6pF typ @ 0V, 1MHz: preserves signal integrity on USB 2.0 (480Mbps) and audio paths |
| ESD Rating | ±30kV air & contact per IEC 61000-4-2: exceeds industrial and consumer immunity requirements |
| AEC-Q101 Qualified | Yes: validated for automotive infotainment, telematics, and ADAS sensor interfaces |
Pinout & Package
Package: SOD323 - surface-mount, 2-terminal, lead-free molded plastic case (UL 94V-0), 0.004g weight, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Transient current entry point for negative surges | Connected to protected line; conducts during negative ESD events to ground reference |
| Cathode (Pin 2) | Transient current entry point for positive surges | Connected to same protected line; conducts during positive ESD events to ground reference |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential lines (e.g., USB D+/D−) without polarity constraints |
| IEC 61000-4-2 ±30kV rating | Eliminates need for external ESD test conditioning; meets EN 55032/55035 immunity requirements out-of-box |
| 52.6pF typical capacitance | Reduces insertion loss and reflection on 480Mbps USB 2.0 traces; avoids eye diagram closure |
| AEC-Q101 qualification | Supports deployment in automotive cabin modules where temperature cycling (-65°C to +150°C) and vibration reliability are mandatory |
Applications
| USB 2.0 Interface Protection | HDMI Data Lane Protection |
|---|---|
Use Scenario: Protecting D+ and D− lines of smartphone USB ports against repeated plug/unplug ESD events. IC Role / Device Role: Bidirectional TVS placed directly at connector, shunting ESD current to chassis ground before reaching PHY IC. Use Value: Prevents latch-up or gate oxide damage in USB transceivers while maintaining <1% signal attenuation at 480MHz. | Use Scenario: Shielding TMDS clock and data pairs in portable media players from user-hand ESD during cable insertion. IC Role / Device Role: Low-capacitance TVS on each differential pair, mounted adjacent to HDMI receptacle. Use Value: Maintains HDMI 1.4 compliance (3.4Gbps) by limiting added capacitance to <55pF per lane. |
| Automotive Infotainment Audio Lines | Digital Camera MIPI CSI-2 Interface |
Use Scenario: Safeguarding analog audio inputs (mic bias, headset jack) in car head units exposed to dry-climate ESD. IC Role / Device Role: TVS on unbalanced audio paths, referenced to vehicle chassis ground. Use Value: Survives 100,000+ ESD strikes per AEC-Q101 stress profile without parameter drift. | Use Scenario: Protecting MIPI CSI-2 differential data lanes between image sensor and SoC in compact camera modules. IC Role / Device Role: Dual-channel TVS array (using two SD12CQ-7 devices) on each lane pair. Use Value: Enables 1.5Gbps MIPI operation with <0.5dB insertion loss at 750MHz due to 52.6pF loading. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12A | Unidirectional; 12V VRWM; 600W PPP; 100pF CT | Requires external polarity management; unsuitable for AC-coupled or differential lines | Select only when protecting DC-biased single-ended signals with higher surge margin needed |
| TPD2E001DRYR | 2-channel array; 12V VRWM; 3A IPP; 12pF CT; integrated ESD protection IC | Lower surge rating; requires I²C configuration; not AEC-Q101 qualified | Prefer for ultra-low-capacitance USB Type-C CC lines where 3A surge suffices |
Compared with SMAJ12A and TPD2E001DRYR, SD12CQ-7 uniquely balances bidirectional operation, automotive qualification, and sub-55pF capacitance - making it optimal for space-limited, high-reliability portable and automotive serial interface protection where polarity independence and signal fidelity are non-negotiable.
Availability
SD12CQ-7 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, automotive infotainment audio lines, and digital camera MIPI CSI-2 interfaces requiring stable component supply across production lifecycles.
Supply support for SD12CQ-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 SD12CQ-7 belongs to Diodes' TVS Diode portfolio targeting high-speed interface protection, developed specifically for ESD-hardened portable, computing, and automotive electronics with stringent capacitance and reliability requirements.
FAQ
What is the maximum clamping voltage of SD12CQ-7 at 15A surge current?
The SD12CQ-7 clamps to a maximum of 24V under a 15A, 8/20µs surge current, as specified in the Electrical Characteristics table. This value is measured with defined test conditions and ensures downstream ICs experience voltage stress within safe operating limits during worst-case transient events.
Is SD12CQ-7 suitable for automotive applications?
Yes - SD12CQ-7 is AEC-Q101 qualified, PPAP capable, and manufactured in IATF 16949 certified facilities. It supports operating temperatures from −65°C to +150°C and is explicitly rated for automotive infotainment, telematics, and sensor interface applications per Diodes' product definitions.
How does the 52.6pF capacitance impact high-speed signal integrity?
At 52.6pF typical, SD12CQ-7 introduces minimal capacitive loading on protected lines - preserving signal rise/fall times and eye diagram margins for USB 2.0 (480Mbps) and MIPI CSI-2 (1.5Gbps). Measured insertion loss remains below 0.5dB up to 750MHz, avoiding data corruption or link training failures.
What is the marking code and package type for SD12CQ-7?
SD12CQ-7 is supplied in the SOD323 package with "7" as the top-side marking code. The device has two terminals (anode and cathode), uses matte tin-plated alloy 42 leadframe, and conforms to JEDEC standard SOD-323 mechanical dimensions including 1.30mm body length and 0.30mm lead width.
SD12CQ-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):
- 13V
- Voltage - Clamping (Max) @ Ipp:
- 24V
- Current - Peak Pulse (10/1000µs):
- 15A (8/20µs)
- Power - Peak Pulse:
- 360W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 52.6pF @ 1MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
SD12CQ-7 FAQ
1.How can I place an order for SD12CQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for SD12CQ-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 SD12CQ-7 reliable?
The price and inventory of SD12CQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SD12CQ-7 is usually 5 days.
3.What payment methods are accepted for SD12CQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SD12CQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SD12CQ-7?
SD12CQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SD12CQ-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 SD12CQ-7?
For technical support, including SD12CQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SD12CQ-7 requirements.
6.How does Aetrix verify that SD12CQ-7 is sourced from the original manufacturer or authorized distributors?
All SD12CQ-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 SD12CQ-7 meets industry standards.
7.What is the process for return or replacement of SD12CQ-7?
All SD12CQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with SD12CQ-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 SD12CQ-7 part is unused and in its original packaging.
Return procedure for SD12CQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SD12CQ-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…
