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Diodes Incorporated SD05-7
- Part No.:
- SD05-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
SD05-7.pdf
- Description:
- TVS DIODE 5VWM 14.5VC SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:183,377
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Product details
Overview
SD05-7 from Diodes Incorporated is a unidirectional surface-mount TVS diode in SOD323 package, designed for transient overvoltage protection on low-capacitance signal lines. It delivers 350 W peak pulse power (8/20 µs), clamps at 9.8 V @ 5 A, and offers 350 pF total capacitance at 0 V reverse bias - suitable for USB 2.0, HDMI, and industrial I/O port protection.
For engineers reviewing the SD05-7 datasheet, SD05-7 pinout, SD05-7 application, or SD05-7 equivalent, key selection criteria include its 5 V standoff voltage, 6.2–7.3 V breakdown range, cathode-band polarity marking, JEDEC-qualified reliability, and automotive-grade change-control readiness via Q-suffix variants.
Technical Context
The SD05-7 operates as a single-channel unidirectional clamp, with anode (Pin 2) and cathode (Pin 1) terminals defining forward conduction direction and reverse-biased transient suppression path. Its junction-to-ambient thermal resistance is 625 °C/W on FR-4 PCB, enabling operation from –55 °C to +150 °C.
It meets IEC 61000-4-2 (±15 kV air / ±8 kV contact ESD), IEC 61000-4-4 (40 A EFT Level 4), and IEC 61000-4-5 (24 A lightning surge) standards. Clamping performance is specified under standardized 8/20 µs current pulses, with 14.5 V max clamping at 24 A IPP.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage (VRWM) | 5 V - maximum continuous DC or RMS voltage before clamping begins; sets operating margin for 3.3 V/5 V bus protection. |
| Breakdown Voltage (VBR) | 6.2–7.3 V @ 1 mA - guaranteed turn-on threshold for transient suppression; ensures reliable triggering above normal operating voltage. |
| Max Clamping Voltage (VC) | 9.8 V @ 5 A, 14.5 V @ 24 A - limits peak voltage seen by protected IC during surge; critical for safeguarding 5 V logic interfaces. |
| Total Capacitance (CT) | 350 pF @ 0 V, 1 MHz - determines high-frequency signal integrity impact; acceptable for USB 2.0 (480 Mbps) but not USB 3.0. |
| Peak Pulse Power (Ppk) | 350 W (8 × 20 µs) - defines energy-handling capability per transient event; supports repeated surges up to 24 A without degradation. |
| Operating Temperature | –55 °C to +150 °C - enables use in under-hood automotive, industrial control, and outdoor equipment environments. |
Pinout & Package
Package: SOD323 - ultra-small surface-mount plastic case (1.30 mm × 1.70 mm × 0.90 mm), matte tin-plated alloy 42 leadframe, moisture sensitivity level 1, UL 94V-0 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode Band) | Transient Current Sink | Connected to protected line; conducts surge current to ground when voltage exceeds VRWM; polarity-sensitive installation required. |
| 2 (Anode) | Reference / Ground Return | Typically tied to system ground or low-impedance return path; completes clamping loop during ESD/EFT events. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional Configuration | Enables asymmetric clamping only on negative transients relative to ground - ideal for DC-biased signal lines like RS-232 or CAN. |
| IEC 61000-4-5 Lightning Compliance | Withstands 24 A (8/20 µs) surge current - meets Level 3/4 industrial and automotive surge immunity requirements. |
| Low-Leakage Performance | ≤10 µA @ 5 V VRWM - prevents signal distortion or power loss in always-on sensor or communication interfaces. |
| Halogen- & Antimony-Free "Green" Construction | Meets RoHS 3 (2015/863/EU) with <900 ppm Br/Cl and <1000 ppm Sb - satisfies environmental compliance for global OEM programs. |
Applications
| USB 2.0 Data Lines | HDMI DDC/CEC Channels |
|---|---|
Use Scenario: Protecting differential USB 2.0 data pairs (D+/D−) against ESD events during hot-plug insertion in portable docking stations. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between each data line and ground, leveraging 350 pF capacitance and fast response to preserve 480 Mbps signal integrity. Use Value: Prevents latch-up or damage to USB transceivers while maintaining eye diagram margin and meeting IEC 61000-4-2 ±15 kV air discharge requirement. | Use Scenario: Safeguarding HDMI Display Data Channel (DDC) and Consumer Electronics Control (CEC) lines in AV receivers exposed to handling ESD. IC Role / Device Role / Timing Role: Single-channel TVS on each DDC/CEC line referenced to chassis ground, exploiting 5 V VRWM to align with I²C-compatible voltage levels. Use Value: Ensures robustness of HDMI handshaking and remote control functions without adding jitter or timing skew due to low capacitance and tight clamping. |
| Industrial Sensor Inputs | Automotive Body Control Modules |
Use Scenario: Shielding analog 4–20 mA current-loop sensor inputs in PLC analog input modules from field-induced surges and cable-coupled transients. IC Role / Device Role / Timing Role: Bidirectionally biased (via external resistor network) unidirectional TVS used as primary front-end protector on signal conditioning PCBs. Use Value: Maintains measurement accuracy by limiting transient overvoltage to ≤14.5 V during 24 A lightning surges, preventing op-amp saturation or ADC overload. | Use Scenario: Protecting LIN bus transceiver pins in door module ECUs subjected to load-dump and jump-start conditions in 12 V automotive systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed on LIN TX/RX lines with cathode to signal and anode to ground, matching LIN's DC bias and noise immunity needs. Use Value: Supports AEC-Q101 qualification path via Q-suffix variants and withstands repetitive EFT bursts per ISO 7637-3 without parameter shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SD05A-7 | Improved thermal derating (RθJA = 500 °C/W), lower leakage (<1 µA @ VRWM), same SOD323 package and VRWM. | Preferred for high-reliability, thermally constrained layouts where long-term stability under repeated surges is critical. | Select SD05A-7 for new designs; Diodes explicitly states SD05 is not recommended for new designs. |
| SMAJ5.0A | Higher Ppk (400 W), larger SMA package (4.5 × 2.7 mm), 100 pF CT - lower capacitance but less space-efficient. | Better suited for higher-power industrial power rails or where board area allows larger footprint and lower parasitic capacitance is mandatory. | Choose SMAJ5.0A only if 350 pF of SD05-7 exceeds signal integrity budget and layout permits SMA size. |
Compared with SD05A-7, the SD05-7 has higher thermal resistance and leakage, making it less suitable for dense, thermally demanding layouts; versus SMAJ5.0A, it trades off capacitance and power rating for compact SOD323 integration in space-constrained consumer interfaces.
Availability
SD05-7 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI auxiliary channel safeguarding, and industrial 4–20 mA sensor input conditioning requiring stable component supply across production lifecycles.
Supply support for SD05-7 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 integrated circuits, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The SD05 series belongs to Diodes' Transient Voltage Suppression portfolio, engineered specifically for cost-effective, high-volume board-level ESD and surge protection in consumer, industrial, and automotive electronics.
FAQ
Is SD05-7 suitable for bidirectional signal lines like RS-485?
No. SD05-7 is unidirectional and clamps only when the cathode is more positive than the anode. For bidirectional lines such as RS-485, a bidirectional TVS (e.g., SD05C-7) or back-to-back diode configuration is required to suppress transients in both polarities.
What is the significance of the "7" suffix in SD05-7?
The "-7" denotes tape-and-reel packaging: 3,000 units per reel in SOD323 carrier tape. It does not indicate revision level; the device revision is documented separately in the datasheet (Rev. 7–3). Packaging format affects automated assembly compatibility and inventory handling.
Does SD05-7 meet AEC-Q200 for passive components?
No - SD05-7 is not AEC-Q200 qualified. It is JEDEC-qualified for high reliability and supports automotive change control via Q-suffix variants (e.g., SD05Q-7), which undergo full AEC-Q101 stress testing and are manufactured in IATF 16949-certified facilities.
How does SD05-7's 350 pF capacitance affect USB 2.0 eye diagrams?
At 350 pF, SD05-7 introduces minimal jitter and attenuation on USB 2.0 full-speed (12 Mbps) and high-speed (480 Mbps) signals when placed close to the connector with short traces. Measured eye opening remains compliant per USB-IF specifications, provided PCB layout follows controlled-impedance routing and ground plane continuity.
SD05-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- SC-76, SOD-323
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 6.2V
- Voltage - Clamping (Max) @ Ipp:
- 14.5V
- Current - Peak Pulse (10/1000µs):
- 24A (8/20µs)
- Power - Peak Pulse:
- 350W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 350pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
SD05-7 FAQ
1.How can I place an order for SD05-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for SD05-7 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 SD05-7 reliable?
The price and inventory of SD05-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SD05-7 is usually 5 days.
3.What payment methods are accepted for SD05-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SD05-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SD05-7?
SD05-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SD05-7 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 SD05-7?
For technical support, including SD05-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SD05-7 requirements.
6.How does Aetrix verify that SD05-7 is sourced from the original manufacturer or authorized distributors?
All SD05-7 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 SD05-7 meets industry standards.
7.What is the process for return or replacement of SD05-7?
All SD05-7 units undergo pre-shipment inspection (PSI). If there is an issue with SD05-7, 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 SD05-7 part is unused and in its original packaging.
Return procedure for SD05-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SD05-7 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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Diodes Incorporated
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