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Diodes Incorporated SD24C-7
- Part No.:
- SD24C-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
SD24C-7.pdf
- Description:
- TVS DIODE 24VWM 45VC SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:124,869
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Product details
Overview
SD24C-7 from Diodes Incorporated is a bidirectional 350W 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, ±30kV IEC 61000-4-2 contact/air ESD rating, 40pF channel capacitance, and SOD323 package - enabling robust protection without signal integrity degradation in USB, audio, and camera interfaces.
For engineers reviewing the SD24C-7 datasheet, SD24C-7 pinout, SD24C-7 application, or SD24C-7 equivalent, key selection criteria include clamping voltage at 8A (45.0V), low leakage (<1µA at VRWM), thermal resistance (500°C/W), and compliance with automotive-grade change control requirements when specified.
Technical Context
This TVS diode operates in bidirectional avalanche mode to clamp transient overvoltages symmetrically across its terminals. Its 26.7V minimum breakdown voltage ensures reliable triggering before damage to downstream ICs, while the 40pF input capacitance maintains signal fidelity on lines up to 100MHz.
The device uses a planar junction structure in a molded SOD323 package with matte tin-plated alloy 42 leads. Thermal performance is characterized at 500°C/W junction-to-ambient on standard FR-4 PCB layout, supporting continuous power dissipation up to 250mW at +25°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 350W (8/20µs waveform; defines maximum surge energy absorption capability) |
| Reverse Standoff Voltage | 24.0V (maximum continuous operating voltage before conduction begins) |
| Breakdown Voltage | 26.7V min at 1mA (guaranteed turn-on threshold for transient clamping) |
| Clamping Voltage | 45.0V max at 8A (voltage seen by protected circuit during worst-case surge) |
| Channel Capacitance | 40pF at 0V, 1MHz (low enough to avoid distortion on USB 2.0 or audio paths) |
| ESD Rating | ±30kV contact & air per IEC 61000-4-2 (meets highest handheld-device immunity requirement) |
| Thermal Resistance | 500°C/W (determines derating curve on standard FR-4 board) |
Pinout & Package
Package: SOD323 - surface-mount plastic case, 0.004g weight, UL 94V-0 rated, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current sink (bidirectional) | Conducts during positive or negative transients relative to cathode; symmetrical clamping path |
| Cathode | Transient current sink (bidirectional) | Conducts during negative or positive transients relative to anode; forms dual-path ESD shunt |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional ESD protection | Enables single-device protection of AC-coupled or differential signal lines (e.g., USB D+/D−) without polarity constraints |
| Ultra-low 40pF capacitance | Preserves signal rise time and eye diagram integrity on 480Mbps USB 2.0 interfaces |
| ±30kV IEC 61000-4-2 rating | Exceeds industrial and consumer ESD immunity requirements without external shielding |
| Lead-free, halogen-free, RoHS 3 compliant | Meets global environmental regulations including EU Directive 2015/863/EU and J-STD-020 Level 1 handling |
Applications
| USB 2.0 Interface Protection | Smartphone Audio Jack ESD Guard |
|---|---|
Use Scenario: Protecting D+ and D− lines of USB 2.0 ports against repeated electrostatic discharge events during cable insertion/removal. IC Role / Device Role: Bidirectional TVS diode placed directly at connector, shunting ESD current to ground before it reaches USB transceiver. Use Value: 40pF capacitance avoids signal attenuation or jitter; 45.0V clamping prevents damage to 3.3V-tolerant PHY inputs. | Use Scenario: Shielding 3.5mm TRRS audio jacks in smartphones from user-hand ESD during plug insertion. IC Role / Device Role: Low-capacitance TVS placed across tip/ring/sleeve contacts to suppress ±30kV discharges without degrading analog audio bandwidth. Use Value: Symmetrical clamping preserves DC bias on microphone and headset lines; SOD323 footprint saves space in tight bezel designs. |
| Digital Camera Data Lines | Portable SSD SATA Interface |
Use Scenario: Safeguarding MIPI CSI-2 differential pairs between image sensor and processor against board-level ESD coupling. IC Role / Device Role: Dual-channel TVS array (using two SD24C-7 devices) protecting high-speed serial video links. Use Value: Sub-45V clamping ensures no overshoot beyond 1.2V receiver absolute maximum ratings; 26.7V VBR avoids false triggering during normal operation. | Use Scenario: Adding secondary ESD protection on SATA TX/RX lanes of portable NVMe SSD enclosures exposed to frequent handling. IC Role / Device Role: Discrete bidirectional TVS mounted at edge connector to absorb fast-rising transients before reaching controller IC. Use Value: 350W peak pulse rating handles multiple lightning-induced surges per IEC 61000-4-5; 250mW PD supports continuous operation near enclosure heat sources. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A-Q | Unidirectional; 24V VRWM; 400W PPP; 55pF CT | Requires separate devices per polarity; higher capacitance limits USB 2.0 use | Select only if unidirectional topology is fixed and capacitance tolerance >55pF |
| TPD2E001DRYR | 2-channel array; 15pF CT; ±8kV ESD; 12V VRWM | Lower voltage rating and ESD level; optimized for low-voltage I/O, not 24V systems | Prefer for 1.8–3.3V logic rails where ultra-low capacitance outweighs surge rating |
Compared with SMAJ24A-Q and TPD2E001DRYR, SD24C-7 uniquely balances ±30kV ESD immunity, 40pF capacitance, and 24V system compatibility in a single SOD323 device - making it optimal for mid-voltage portable data interfaces where space and symmetry are critical.
Availability
SD24C-7 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, smartphone audio jack hardening, and digital camera MIPI CSI-2 line safeguarding requiring stable component supply across high-mix consumer electronics production.
Supply support for SD24C-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 SD24C-7 belongs to Diodes' TVS Diode family engineered specifically for high-reliability ESD suppression in space-constrained portable electronics - emphasizing low capacitance, bidirectional symmetry, and full RoHS 3 compliance.
FAQ
What is the maximum clamping voltage of SD24C-7 at 8A surge current?
The SD24C-7 exhibits a maximum clamping voltage of 45.0V at 8A peak pulse current (8/20µs waveform), as specified in the Electrical Characteristics table. This value represents the worst-case voltage imposed on protected circuitry during a full-rated ESD event and is measured cathode-to-anode under standardized test conditions.
Does SD24C-7 meet automotive qualification standards?
SD24C-7 is not pre-qualified to AEC-Q101; however, Diodes Incorporated offers automotive-grade variants (e.g., SD24CQ-7) with AEC-Q101 qualification, PPAP capability, and IATF 16949 manufacturing. Standard SD24C-7 is intended for commercial portable electronics unless explicitly upgraded per customer request and qualification agreement.
How does the SOD323 package affect thermal performance?
The SOD323 package delivers a junction-to-ambient thermal resistance of 500°C/W when mounted on a standard FR-4 PCB with Diodes' recommended pad layout (2oz copper). This allows 250mW continuous power dissipation at +25°C ambient, with linear derating to zero at +150°C - sufficient for intermittent ESD events but not sustained overvoltage conditions.
Can SD24C-7 be used on 3.3V logic lines?
No - SD24C-7 has a 24.0V reverse standoff voltage and 26.7V minimum breakdown voltage, making it unsuitable for direct protection of 3.3V or 5V logic lines. Using it there would cause premature conduction and functional failure. For 3.3V interfaces, select lower-voltage TVS devices such as PESD5V0S1BA-AX (5.0V VRWM) or similar.
SD24C-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):
- 24V (Max)
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 45V
- Current - Peak Pulse (10/1000µs):
- 8A (8/20µs)
- Power - Peak Pulse:
- 350W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 40pF @ 1MHz (Max)
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
SD24C-7 FAQ
1.How can I place an order for SD24C-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for SD24C-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 SD24C-7 reliable?
The price and inventory of SD24C-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SD24C-7 is usually 5 days.
3.What payment methods are accepted for SD24C-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SD24C-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SD24C-7?
SD24C-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SD24C-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 SD24C-7?
For technical support, including SD24C-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SD24C-7 requirements.
6.How does Aetrix verify that SD24C-7 is sourced from the original manufacturer or authorized distributors?
All SD24C-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 SD24C-7 meets industry standards.
7.What is the process for return or replacement of SD24C-7?
All SD24C-7 units undergo pre-shipment inspection (PSI). If there is an issue with SD24C-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 SD24C-7 part is unused and in its original packaging.
Return procedure for SD24C-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SD24C-7 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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