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Diodes Incorporated SD24Q-7
- Part No.:
- SD24Q-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
SD24Q-7.pdf
- Description:
- SURGE PROTECTION PP SOD323 T&R 3
- Quantity:
- Payment:
- Shipping:
Inventory:2,965
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Product details
Overview
SD24Q-7 from Diodes Incorporated is a unidirectional transient voltage suppression (TVS) diode designed for ESD protection of high-speed data lines in portable electronics. It features a 24.0V reverse standoff voltage, 26.0V minimum breakdown voltage at 1mA, 350W peak pulse power (8/20µs), 8A maximum peak pulse current, and 58pF typical channel capacitance - enabling robust ±30kV IEC 61000-4-2 ESD protection with minimal signal distortion in USB, audio, and camera interfaces.
For engineers reviewing the SD24Q-7 datasheet, SD24Q-7 pinout, SD24Q-7 application, or SD24Q-7 equivalent, this device is selected for low-capacitance ESD clamping in space-constrained consumer ports where leakage (<1µA at VRWM), AEC-Q101 qualification, and SOD323 footprint compatibility are critical design constraints.
Technical Context
This unidirectional TVS diode operates as a clamping device between I/O and ground, triggering conduction above 26.0V to limit transient voltages to ≤44.0V at 8A (8/20µs). Its low 58pF input capacitance ensures minimal loading on high-frequency signal paths such as USB 2.0 and MIPI D-PHY interfaces.
The device is rated for continuous power dissipation of 250mW at 25°C with thermal resistance of 500°C/W, and supports operation from –65°C to +150°C. It meets automotive-grade reliability requirements via AEC-Q101 qualification and is manufactured in IATF 16949-certified facilities.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage | 24.0V - Maximum continuous operating voltage before clamping begins; defines safe I/O rail margin for 24V nominal systems. |
| Breakdown Voltage (VBR) | 26.0V min at 1mA - Confirmed turn-on threshold ensuring reliable clamping onset without premature conduction. |
| Clamping Voltage (VCL) | 44.0V max at 8A (8/20µs) - Limits transient voltage seen by protected ICs during worst-case surge events. |
| Peak Pulse Power | 350W - Sustains high-energy ESD transients per IEC 61000-4-2 without failure. |
| Channel Capacitance | 58pF typ at 0V, 1MHz - Enables use on 480Mbps USB 2.0 and 1Gbps MIPI lanes without signal integrity degradation. |
| ESD Rating | ±30kV contact & air discharge - Exceeds IEC 61000-4-2 Level 4 immunity requirement for handheld end equipment. |
| Leakage Current | 1µA max at VRWM - Minimizes standby power loss in battery-powered devices. |
Pinout & Package
Package: SOD323 - ultra-compact surface-mount plastic package (1.30 × 1.70 × 0.90 mm), RoHS-compliant, halogen-free, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Protected I/O line input | Connected to signal line requiring ESD protection; conducts transient current toward cathode during overvoltage. |
| Cathode (Pin 2) | Ground reference / return path | Connected to system ground plane; completes clamping path and determines unidirectional polarity behavior. |
Key Features
| Feature | Design Value |
|---|---|
| IEC 61000-4-2 ESD protection | ±30kV contact & air - eliminates need for external ESD filters in certified consumer designs. |
| Low input capacitance | 58pF - preserves signal rise/fall times and eye diagram integrity on high-speed serial links. |
| AEC-Q101 qualification | Automotive-grade reliability - supports deployment in infotainment, telematics, and ADAS sensor interfaces. |
| Green packaging | Halogen- and antimony-free, lead-free - satisfies EU RoHS 3 (2015/863/EU) and automotive change control requirements. |
Applications
| USB 2.0 Data Lines | Digital Camera Interfaces |
|---|---|
Use Scenario: Protecting D+ and D– lines in smartphone USB OTG ports against repeated ESD events during cable insertion. IC Role / Device Role: Unidirectional clamping TVS placed directly at connector, shunting transients to ground before reaching USB PHY. Use Value: 58pF capacitance avoids USB 2.0 eye mask violations; ±30kV rating ensures compliance with IEC 61000-4-2 Level 4 testing. | Use Scenario: Shielding MIPI CSI-2 differential pairs in mobile phone rear cameras from ESD during lens module handling. IC Role / Device Role: Per-lane TVS on each data line (CLKP/N, DATAP/N), mounted adjacent to image sensor connector. Use Value: Low 24.0V VRWM allows use on 1.8V/2.8V I/O rails; 44.0V clamping prevents latch-up in CIS analog front-end. |
| Audio Jack Protection | Automotive Infotainment Displays |
Use Scenario: Guarding 3.5mm headset jack mic and ground lines against user-induced ESD in portable media players. IC Role / Device Role: Dual-line TVS configuration (one device per signal) with shared cathode tied to clean analog ground. Use Value: Sub-1µA leakage preserves battery life; 26.0V VBR avoids false triggering during audio signal peaks. | Use Scenario: Safeguarding LVDS or eDP video interface traces between head unit SoC and center display panel. IC Role / Device Role: Line-to-ground TVS on each differential pair, placed within 5mm of display connector per AEC-Q100 layout guidance. Use Value: AEC-Q101 qualification enables PPAP submission; 350W PPP handles combined ESD + load dump coupling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A-TP (Microchip) | Higher 1.5kW PPP, larger SMA package (4.5×2.7mm), 100pF CT | Used in industrial power supplies; unsuitable for space-constrained portable PCBs | Select when higher surge energy handling is required and board area permits larger footprint. |
| ESD9X24VD-2/TR (ON Semiconductor) | Same SOD323 package, 24V VRWM, but 105pF CT and ±25kV ESD rating | Lower ESD immunity; used in cost-sensitive non-certified accessories | Choose only if ±30kV compliance is not required and higher capacitance is acceptable for lower-speed signals. |
Compared with SMAJ24A-TP and ESD9X24VD-2/TR, SD24Q-7 uniquely balances automotive qualification, ultra-low 58pF capacitance, and ±30kV ESD rating in the miniature SOD323 package - making it optimal for certified high-speed portable and automotive infotainment interfaces where board space and signal fidelity are constrained.
Availability
SD24Q-7 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, MIPI CSI-2 camera modules, and automotive infotainment display links requiring stable component supply across production lifecycles.
Supply support for SD24Q-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 SD24Q belongs to Diodes' TVS Diode family engineered specifically for high-fidelity ESD protection in compact, high-reliability portable and automotive electronics - emphasizing low capacitance, AEC-Q101 compliance, and IEC 61000-4-2 certification.
FAQ
Is SD24Q-7 bidirectional or unidirectional?
SD24Q-7 is a unidirectional TVS diode, configured with anode and cathode terminals to clamp only positive transients relative to ground. Its schematic symbol and pinout (anode = Pin 1, cathode = Pin 2) confirm single-polarity operation - suitable for DC-biased signal lines like USB D+ and MIPI data pairs.
What is the maximum operating temperature for SD24Q-7?
The SD24Q-7 supports an operating junction temperature range of –65°C to +150°C. Its thermal resistance (RθJA) is 500°C/W on standard FR-4 PCB with recommended pad layout, allowing full-rated 350W pulse power only below 25°C ambient - derating linearly to zero at 150°C per Figure 2 in the datasheet.
Does SD24Q-7 require external biasing or control circuitry?
No. SD24Q-7 is a passive clamping device that requires no external bias, control signals, or power supply. It operates automatically: remaining high-impedance (<1µA leakage) below 24.0V VRWM, then conducting heavily above 26.0V VBR to clamp transients to ≤44.0V at 8A peak current.
Can SD24Q-7 be used in place of a bidirectional TVS for HDMI or Ethernet protection?
No. SD24Q-7 is unidirectional and unsuitable for AC-coupled or bipolar signal lines like HDMI or Ethernet PHYs, which require symmetric clamping above and below ground. Bidirectional alternatives (e.g., SD24C-7) must be used for those applications to prevent forward conduction during negative signal swings.
SD24Q-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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 24V (Max)
- Voltage - Breakdown (Min):
- 26V
- Voltage - Clamping (Max) @ Ipp:
- 44V
- Current - Peak Pulse (10/1000µs):
- 8A (8/20µs)
- Power - Peak Pulse:
- 350W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 58pF @ 1MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
SD24Q-7 FAQ
1.How can I place an order for SD24Q-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for SD24Q-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 SD24Q-7 reliable?
The price and inventory of SD24Q-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SD24Q-7 is usually 5 days.
3.What payment methods are accepted for SD24Q-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SD24Q-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SD24Q-7?
SD24Q-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SD24Q-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 SD24Q-7?
For technical support, including SD24Q-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SD24Q-7 requirements.
6.How does Aetrix verify that SD24Q-7 is sourced from the original manufacturer or authorized distributors?
All SD24Q-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 SD24Q-7 meets industry standards.
7.What is the process for return or replacement of SD24Q-7?
All SD24Q-7 units undergo pre-shipment inspection (PSI). If there is an issue with SD24Q-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 SD24Q-7 part is unused and in its original packaging.
Return procedure for SD24Q-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SD24Q-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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Diodes Incorporated
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