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onsemi SD05T3G
- Part No.:
- SD05T3G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
SD05T3G.pdf
- Description:
- TVS DIODE 5VWM 9.8VC SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:6,515
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Product details
Overview
SD05T3G from onsemi is a unidirectional ESD protection diode in SOD-323 package, rated for 5.0 V working peak reverse voltage, 9.8 V clamping voltage at 5 A pulse, and 350 W peak pulse power (8/20 µs). It meets IEC61000-4-2 Level 4 (±15 kV air, ±8 kV contact), IEC61000-4-4 Level 4 (40 A), and 30 kV HBM, and is used to safeguard USB, HDMI, and audio interface lines in portable electronics.
For engineers reviewing the SD05T3G datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage under 5 A transient, low 350 pF capacitance at 0 V bias, compliance with IEC61000-4-2/4-4/4-5, thermal resistance of 416 °C/W, and Pb-free SOD-323 footprint compatibility with space-constrained PCB layouts.
Technical Context
This device operates as a unidirectional TVS diode, leveraging silicon avalanche breakdown to clamp transients above its 6.2–7.3 V breakdown threshold. Its low 10 nA leakage at 5.0 V VRWM and 350 pF junction capacitance at 0 V bias enable high-speed signal line protection without signal integrity degradation.
The SOD-323 package supports reflow up to 260 °C (MSL 1), with cathode indicated by polarity band and 100% matte tin lead finish. Thermal performance is characterized by 416 °C/W junction-to-ambient resistance on FR-4 board with 1 cm² copper pad.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Peak Reverse Voltage | 5.0 V - defines maximum continuous DC or AC reverse voltage before conduction begins |
| Clamping Voltage @ 5 A | 9.8 V - maximum voltage seen by protected circuit during 8/20 µs 5 A surge |
| Peak Pulse Power | 350 W - transient energy handling capability per IEC61000-4-2 8/20 µs waveform |
| Junction Capacitance | 350 pF @ 0 V - limits insertion loss and signal distortion on high-speed data lines |
| ESD Rating | ±15 kV air / ±8 kV contact per IEC61000-4-2 Level 4 - ensures robust system-level ESD immunity |
| Thermal Resistance | 416 °C/W - determines steady-state temperature rise under 300 mW dissipation on FR-4 |
Pinout & Package
SOD-323 surface-mount package (1.70 × 1.25 × 0.85 mm), void-free thermosetting plastic case, UL 94 V-0 rated epoxy, matte tin leads, MSL 1, 260 °C max reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to ground or low-impedance return path; conducts during positive transients on anode side |
| 2 | Anode | Connected to protected signal line; sinks transient current to cathode during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| IEC61000-4-2 Level 4 Compliance | Enables direct integration into CE-marked consumer and industrial equipment without additional system-level ESD filtering |
| Low Clamping Voltage (9.8 V @ 5 A) | Protects 5 V logic interfaces (e.g., USB 2.0, I²C) while maintaining safe margin below IC absolute maximum ratings |
| 350 pF Junction Capacitance | Permits use on signals up to ~100 MHz without measurable rise-time degradation or impedance mismatch |
| Pb-Free & RoHS Compliant | Meets global environmental regulations and supports lead-free assembly processes without reliability compromise |
Applications
| USB 2.0 Data Lines | HDMI DDC/CEC Channels |
|---|---|
Use Scenario: Protecting differential USB 2.0 D+ and D− lines against ESD events during cable hot-plug and handling. IC Role / Device Role: Unidirectional TVS diode placed between each data line and ground to clamp transients before they reach the USB transceiver. Use Value: Maintains signal integrity with 350 pF capacitance while limiting clamped voltage to 9.8 V-well below typical 12 V abs max rating of USB PHYs. | Use Scenario: Safeguarding HDMI Display Data Channel (DDC) and Consumer Electronics Control (CEC) bidirectional control lines from ESD during display connection/disconnection. IC Role / Device Role: Single unidirectional diode per line referenced to ground, exploiting low leakage (10 nA) to avoid DC loading of pull-up resistors. Use Value: Prevents latch-up or damage in HDMI source/sink controllers while adding negligible capacitive load to 100 kHz DDC bus. |
| Audio Jack Microphone Input | Industrial RS-485 Termination Points |
Use Scenario: Shielding mono microphone input pins on 3.5 mm TRRS jacks from human-body ESD during plug insertion. IC Role / Device Role: Ground-referenced clamping diode on biased mic input line, operating within 5 V rail constraints. Use Value: Clamps 15 kV air-gap discharges to ≤9.8 V, preventing op-amp input stage damage without affecting DC bias or AC gain. | Use Scenario: Adding localized ESD protection at RS-485 bus termination resistors in factory automation gateways. IC Role / Device Role: Low-leakage (10 nA) unidirectional TVS on A/B differential pair lines referenced to local ground plane. Use Value: Survives 40 A EFT bursts per IEC61000-4-4 Level 4 while preserving common-mode noise rejection via matched capacitance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESD5Z5.0T1G | Same SOD-323 package, identical 5.0 V VRWM and 9.8 V VC @ 5 A, but lower 240 pF capacitance | Better suited for >200 MHz signal lines (e.g., MIPI D-PHY); same IEC61000-4-2/4-4 compliance | Select when lower capacitance is required without changing layout or thermal design |
| SMF5.0AT1G | Higher 600 W peak power, SMA package (larger footprint), 10.8 V clamping @ 5 A, 100 pF capacitance | Used where higher surge margin is needed (e.g., industrial field wiring), not suitable for ultra-compact layouts | Choose only if PCB area allows SMA and system requires >350 W transient handling |
Compared with ESD5Z5.0T1G and SMF5.0AT1G, SD05T3G offers balanced ESD robustness (350 W, ±15 kV), compact SOD-323 fit, and proven 350 pF performance for sub-100 MHz interfaces-making it optimal for cost- and space-sensitive consumer port protection.
Availability
SD05T3G is available at Aetrix Electronics and suitable for USB interface protection, HDMI control channel safeguarding, and audio jack ESD hardening requiring stable component supply across high-volume consumer electronics production.
Supply support for SD05T3G 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient technologies for automotive, industrial, cloud, and IoT applications.
The SD05T3G belongs to onsemi's SOD-323 ESD protection diode family, engineered specifically for board-level transient suppression in high-density portable electronics with strict size and signal-integrity constraints.
FAQ
What is the clamping voltage of SD05T3G at 5 A transient current?
The SD05T3G has a maximum clamping voltage of 9.8 V when subjected to a 5 A, 8/20 µs transient pulse. This value is measured per IEC61000-4-2 test conditions and ensures protected circuits remain within safe operating limits. The SD05T3G achieves this clamping performance while maintaining low leakage and controlled capacitance, making it suitable for 5 V logic interfaces. Always verify layout parasitics and grounding in final design to maintain specified SD05T3G clamping behavior.
Does SD05T3G meet automotive-grade reliability requirements?
No-SD05T3G is not AEC-Q101 qualified. For automotive applications, onsemi offers the SZSD05T1G variant (discontinued per Rev. 6 datasheet), which carries the SZ prefix indicating AEC-Q101 qualification and PPAP capability. SD05T3G is intended for commercial and industrial end equipment such as printers, medical devices, and communication systems. Engineers designing for automotive environments must select an AEC-Q101–qualified alternative and confirm full compliance documentation for SD05T3G's replacement part.
What is the junction capacitance of SD05T3G and how does it affect high-speed signals?
The SD05T3G exhibits 350 pF junction capacitance at 0 V bias and 1 MHz frequency. This value directly impacts signal rise time and impedance matching on data lines: for USB 2.0 (480 Mbps), it introduces minimal distortion, but may limit usability above ~100 MHz. Designers should model total node capacitance-including PCB trace and IC input-when deploying SD05T3G on high-speed paths. The SD05T3G datasheet confirms this capacitance is stable across operating temperature and bias ranges.
Can SD05T3G be used for bidirectional signal protection?
No-SD05T3G is a unidirectional ESD protection diode, designed for use with grounded cathode configuration on positive-rail-referenced signal lines. It does not provide symmetrical clamping for negative transients. For bidirectional protection (e.g., RS-485, CAN), a dual-diode array or dedicated bidirectional TVS like ESD7L5.0DT5G is required. Using SD05T3G in bidirectional roles risks incomplete protection and potential device failure during negative surges.
What is the thermal resistance and power derating behavior of SD05T3G?
The SD05T3G has a junction-to-ambient thermal resistance (RJA) of 416 °C/W on FR-4 board with 1 cm² copper pad. Its steady-state power dissipation is rated at 300 mW at 25 °C, derating linearly by 2.4 mW/°C above that temperature. This means usable power drops to ~180 mW at 75 °C ambient. These values are critical for ensuring long-term reliability in enclosed or thermally constrained enclosures where SD05T3G may experience sustained leakage or repeated low-energy transients.
SD05T3G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- 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):
- 5V
- Voltage - Breakdown (Min):
- 6.2V
- Voltage - Clamping (Max) @ Ipp:
- 9.8V
- Current - Peak Pulse (10/1000µs):
- 5A (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
SD05T3G FAQ
1.How can I place an order for SD05T3G through Aetrix?
Please submit a Request for Quotation (RFQ) for SD05T3G 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 SD05T3G reliable?
The price and inventory of SD05T3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SD05T3G is usually 5 days.
3.What payment methods are accepted for SD05T3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SD05T3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SD05T3G?
SD05T3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SD05T3G 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 SD05T3G?
For technical support, including SD05T3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SD05T3G requirements.
6.How does Aetrix verify that SD05T3G is sourced from the original manufacturer or authorized distributors?
All SD05T3G 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 SD05T3G meets industry standards.
7.What is the process for return or replacement of SD05T3G?
All SD05T3G units undergo pre-shipment inspection (PSI). If there is an issue with SD05T3G, 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 SD05T3G part is unused and in its original packaging.
Return procedure for SD05T3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SD05T3G Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
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ESD5Z3.3T1G
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D5V0H1B2LP-7B
Diodes Incorporated
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D5V0P1B2LP-7B
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DESD5V0U1BA-7
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ESD5Z5.0T1G
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DESD5V0U1BB-7
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
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DF2S5M4CT,L3F
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D5V0L1B2WS-7
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