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Diodes Incorporated T3V3S5-7
- Part No.:
- T3V3S5-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
T3V3S5-7.pdf
- Description:
- TVS DIODE 3.3VWM 16VC SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:37,045
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Product details
Overview
T3V3S5-7 from Diodes Incorporated is a unidirectional surface-mount transient voltage suppression (TVS) diode designed for ESD protection in low-voltage signal lines. It features a 3.3 V reverse standoff voltage, 5.0 V minimum breakdown voltage at 1.0 mA, clamping voltage of 8.4 V at 5 A (8/20 µs), 220 pF typical capacitance at 0 V and 1 MHz, and is packaged in SOD523 for space-constrained USB, HDMI, and I²C interfaces.
For engineers reviewing the T3V3S5-7 datasheet, T3V3S5-7 pinout, T3V3S5-7 application, or T3V3S5-7 equivalent, key selection criteria include clamping performance under 5 A surge, low capacitance for high-speed data integrity, unidirectional polarity for DC-biased lines, and SOD523 footprint compatibility with automated assembly.
Technical Context
This TVS diode operates as a unidirectional clamp, conducting only during negative transients relative to its cathode terminal. Its silicon avalanche structure delivers sub-nanosecond response time and stable clamping across temperature, validated per IEC61000-4-2 (±30 kV air/contact discharge).
Designed for low-capacitance signal line protection, it maintains 220 pF at 0 V bias-critical for preserving signal rise/fall times in 480 Mbps USB 2.0 and 3.4 Gbps HDMI 1.4a channels-while sustaining 300 mW power dissipation on FR-4 with recommended pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage | 3.3 V - Maximum continuous DC or RMS signal voltage before leakage exceeds 1 µA. |
| Breakdown Voltage | 5.0 V min @ 1 mA - Ensures reliable conduction onset during ESD events without premature triggering. |
| Clamping Voltage | 8.4 V @ 5 A (8/20 µs) - Limits downstream IC stress to safe levels during 30 kV IEC61000-4-2 surges. |
| Total Capacitance | 220 pF @ 0 V, 1 MHz - Enables use on USB 2.0 and I²C without signal distortion or timing skew. |
| ESD Rating | ±30 kV IEC61000-4-2 - Meets industrial and consumer end-equipment immunity requirements. |
| Package | SOD523 - 1.25 mm × 0.85 mm footprint supports high-density PCB layouts and reflow assembly. |
Pinout & Package
Package: SOD523 - ultra-compact surface-mount plastic package with cathode band marking; dimensions: 1.25 mm length × 0.85 mm width × 0.65 mm height; moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Signal Input / Protected Line | Connected to the line requiring ESD protection (e.g., USB D+, HDMI TMDS+); conducts during negative transients. |
| Cathode | Reference / Ground Return | Connected to system ground or DC bias rail; defines unidirectional clamping direction and polarity. |
Key Features
| Feature | Design Value |
|---|---|
| Low Clamping Voltage | 8.4 V at 5 A ensures protected ICs (e.g., USB PHYs) remain below absolute maximum ratings during surge events. |
| High ESD Robustness | ±30 kV IEC61000-4-2 air/contact discharge rating eliminates need for secondary board-level protection in many designs. |
| Signal Integrity Preservation | 220 pF capacitance minimizes insertion loss and reflection on 480 Mbps USB 2.0 differential pairs. |
| Lead-Free & Green Compliance | Fully RoHS 3 compliant with <900 ppm Br/Cl and <1000 ppm Sb-meets automotive and medical regulatory requirements. |
Applications
| USB 2.0 Data Lines | HDMI 1.4a TMDS Channels |
|---|---|
Use Scenario: Protecting D+ and D− pins of USB 2.0 transceivers against contact ESD during cable insertion. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed directly at connector, shunting surge current to ground before reaching PHY. Use Value: Prevents latch-up or gate oxide damage in 3.3 V tolerant PHYs while maintaining 480 Mbps eye diagram integrity. | Use Scenario: Safeguarding TMDS+ and TMDS− differential pairs in HDMI source devices against hot-plug ESD. IC Role / Device Role / Timing Role: Low-capacitance TVS mounted adjacent to HDMI connector, referenced to chassis ground. Use Value: Maintains 3.4 Gbps signal fidelity by limiting capacitance to 220 pF and clamping transients to ≤8.4 V. |
| I²C Bus Lines | Industrial Sensor Interfaces |
Use Scenario: Shielding SDA/SCL lines of microcontrollers and EEPROMs in embedded systems from handling ESD. IC Role / Device Role / Timing Role: Bidirectionally protected via two unidirectional devices (anode-to-line, cathode-to-ground), enabling DC bias preservation. Use Value: Allows operation up to 400 kHz clock rate without capacitive loading-induced timing violations. | Use Scenario: Protecting analog sensor outputs (e.g., 0–3.3 V pressure transducers) in factory automation equipment. IC Role / Device Role / Timing Role: Clamp placed between sensor output and ADC input, referenced to system ground. Use Value: Prevents ADC saturation or microcontroller reset during 8 kV HBM ESD events on exposed field wiring. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ3.3A | DO-214AC package (4.5 mm × 2.7 mm); 100 pF capacitance; 12.3 V clamping @ 5 A. | Larger footprint; higher clamping voltage limits use in 3.3 V logic but suits higher-power industrial I/O. | Select when board space allows larger package and lower capacitance is prioritized over clamping tightness. |
| TPD2E001DRYR | Quad-channel, 15 pF per channel, 3.6 V standoff; integrated ESD array in UQFN-10. | Multi-line protection in single device; optimized for high-speed digital buses with strict capacitance budgets. | Choose for space-constrained multi-signal protection where discrete placement of four T3V3S5-7 units is impractical. |
Compared with SMAJ3.3A and TPD2E001DRYR, T3V3S5-7 offers the tightest clamping (8.4 V) in the smallest footprint (SOD523), making it optimal for single-line, low-voltage, high-density ESD protection where surge energy is limited to IEC61000-4-2 levels.
Availability
T3V3S5-7 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI 1.4a TMDS channel safeguarding, and industrial sensor signal line ESD hardening requiring stable component supply and long-term obsolescence mitigation support.
Supply support for T3V3S5-7 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, specializing in high-reliability protection, power management, and signal integrity solutions for industrial, computing, and consumer markets.
T3V3S5-7 belongs to Diodes' TVS diode product line, engineered specifically for low-capacitance, high-speed data line protection in portable and space-constrained electronics.
FAQ
Is T3V3S5-7 still in active production?
No-T3V3S5-7 is officially obsolete and discontinued per Diodes Incorporated's DS31112 Rev. 14-2 (December 2021). Aetrix Electronics maintains legacy inventory and provides last-time-buy support, including full traceability and documentation for ongoing production programs.
What is the polarity configuration of T3V3S5-7?
T3V3S5-7 is a unidirectional TVS diode with cathode-band marking indicating the cathode terminal. It clamps only negative transients relative to the cathode; the anode connects to the protected line, and the cathode connects to ground or DC reference.
Can T3V3S5-7 be used for bidirectional signal lines like USB D+/D−?
Yes-two T3V3S5-7 devices can protect a differential pair: one with anode on D+, cathode to ground; another with anode on D−, cathode to ground. This preserves DC bias while providing symmetric ±30 kV ESD protection without adding capacitance imbalance.
Does T3V3S5-7 require derating at elevated ambient temperatures?
Yes-its 300 mW power dissipation is rated at +25°C ambient. Derating follows RθJA = 417°C/W: maximum allowable power drops linearly to ~180 mW at +85°C ambient, requiring verification of worst-case surge repetition rate and thermal environment in final layout.
T3V3S5-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- SC-79, SOD-523
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 3.3V
- Voltage - Breakdown (Min):
- 5V
- Voltage - Clamping (Max) @ Ipp:
- 16V
- Current - Peak Pulse (10/1000µs):
- 16A (8/20µs)
- Power - Peak Pulse:
- 220W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 85pF @ 1MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
T3V3S5-7 FAQ
1.How can I place an order for T3V3S5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for T3V3S5-7 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 T3V3S5-7 reliable?
The price and inventory of T3V3S5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T3V3S5-7 is usually 5 days.
3.What payment methods are accepted for T3V3S5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T3V3S5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T3V3S5-7?
T3V3S5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T3V3S5-7 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 T3V3S5-7?
For technical support, including T3V3S5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T3V3S5-7 requirements.
6.How does Aetrix verify that T3V3S5-7 is sourced from the original manufacturer or authorized distributors?
All T3V3S5-7 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 T3V3S5-7 meets industry standards.
7.What is the process for return or replacement of T3V3S5-7?
All T3V3S5-7 units undergo pre-shipment inspection (PSI). If there is an issue with T3V3S5-7, 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 T3V3S5-7 part is unused and in its original packaging.
Return procedure for T3V3S5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
T3V3S5-7 Tags
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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