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Diodes Incorporated T3V3S5A-7
- Part No.:
- T3V3S5A-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
T3V3S5A-7.pdf
- Description:
- Surge Protection PP SOD523 T&R 3
- Quantity:
- Payment:
- Shipping:
Inventory:3,531
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Product details
Overview
T3V3S5A-7 from Diodes Incorporated is a unidirectional surface-mount TVS diode designed for ESD and transient overvoltage protection on low-voltage signal lines. It features a 3.3 V reverse standoff voltage, 5.0 V minimum breakdown voltage at 1 mA, clamps to 6.6 V at 5 A (8/20 µs), delivers 220 W peak pulse power, and exhibits 125 pF typical capacitance at 0 V - ideal for USB 2.0, HDMI, and I²C bus protection in portable electronics.
For engineers reviewing the T3V3S5A-7 datasheet, T3V3S5A-7 pinout, T3V3S5A-7 application, or T3V3S5A-7 equivalent, this device offers verified ESD immunity (±30 kV IEC61000-4-2 contact/air), fast response time, low clamping voltage, and SOD523 footprint compatibility - critical for space-constrained, high-reliability interface protection designs.
Technical Context
This TVS diode operates as a unidirectional clamp between signal line and ground, activating only during negative transients relative to its cathode. Its silicon avalanche structure ensures sub-nanosecond response and stable clamping across temperature (–65°C to +150°C).
Rated for 300 mW steady-state power dissipation with 417°C/W junction-to-ambient thermal resistance, it relies on FR-4 PCB pad layout per Diodes' recommended outline for thermal performance. The cathode band identifies Pin 1, and terminals use matte tin annealed over Alloy 42 leadframe for reliable solderability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage (VRWM) | 3.3 V - maximum continuous DC or RMS voltage before leakage exceeds 1 µA; sets operating margin for 3.3 V logic rails. |
| Breakdown Voltage (VBR) | 5.0 V min @ 1 mA - guaranteed conduction threshold under transient stress; ensures robust triggering above normal operating voltage. |
| Clamping Voltage (VC) | 6.6 V @ 5 A (8/20 µs) - peak voltage seen by protected circuit during worst-case surge; preserves 3.3 V IC I/O integrity. |
| Peak Pulse Power (PPK) | 220 W - maximum transient energy absorption capability; supports IEC61000-4-2 Level 4 compliance. |
| Total Capacitance (CT) | 125 pF @ 0 V, 1 MHz - signal-line loading effect; suitable for ≤480 Mbps USB 2.0 without data integrity loss. |
| ESD Rating (IEC61000-4-2) | ±30 kV contact & air discharge - validated immunity level for handheld and industrial interface ports. |
| Package | SOD523 - 1.25 mm × 0.85 mm × 0.65 mm footprint; enables high-density routing on compact PCBs. |
Pinout & Package
Package: SOD523 - ultra-compact surface-mount plastic package with cathode band marking. Dimensions: 1.25 mm (E) × 0.85 mm (D) × 0.65 mm (A max), weight ≈ 0.001 g. Moisture sensitivity level 1 (J-STD-020).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Cathode Band) | Anode connection point | Connected to protected signal line; current flows from signal into device during positive transients. |
| Pin 2 | Cathode connection point | Connected to system ground; defines clamping reference and completes transient current path. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional clamping architecture | Protects against negative-going transients only; avoids forward conduction during normal 3.3 V signal swings. |
| Low clamping voltage (6.6 V @ 5 A) | Minimizes voltage overshoot on protected I/O pins, reducing risk of latch-up or oxide damage in downstream ICs. |
| 125 pF capacitance at 0 V | Preserves signal rise/fall times in high-speed digital interfaces up to USB 2.0 speeds without added jitter. |
| ±30 kV IEC61000-4-2 ESD rating | Meets highest industrial and consumer ESD immunity requirements without external shielding or layout reinforcement. |
| SOD523 footprint compatibility | Enables drop-in replacement in space-constrained designs using standard reflow profiles and automated placement equipment. |
Applications
| USB 2.0 Data Lines | HDMI DDC/CEC Channels |
|---|---|
Use Scenario: Protecting differential USB 2.0 D+ and D− lines from ESD events during cable insertion or handling. IC Role / Device Role: Unidirectional TVS clamp referenced to ground, placed adjacent to connector. Use Value: Limits transient voltage to ≤6.6 V while adding only 125 pF loading - maintains eye diagram integrity at 480 Mbps. |
Use Scenario: Safeguarding HDMI DDC (I²C) and CEC control lines against contact discharge in AV receivers and displays. IC Role / Device Role: Low-capacitance transient suppressor on 5 V-tolerant open-drain buses. Use Value: Prevents bus lockup and EEPROM corruption with ±30 kV ESD immunity and sub-7 V clamping. |
| I²C Sensor Interfaces | Industrial GPIO Protection |
Use Scenario: Shielding 3.3 V I²C SDA/SCL lines connecting microcontrollers to environmental sensors in IoT nodes. IC Role / Device Role: Bidirectionally referenced unidirectional TVS (cathode to ground) on each line. Use Value: Maintains <1 µA leakage at 3.3 V while delivering 220 W surge handling - no impact on pull-up sizing or timing. |
Use Scenario: Hardening programmable logic controller (PLC) digital input channels exposed to field wiring transients. IC Role / Device Role: Point-of-entry transient clamp on 3.3 V logic-level inputs. Use Value: Survives repeated 5 A surges (8/20 µs) without degradation; operates from –65°C to +150°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ3.3A (Bourns) | DO-214AC package (4.5 mm × 2.7 mm); 300 W PPK; 10.3 V clamping @ 5 A; 350 pF CT. | Larger footprint and higher capacitance limit use to lower-speed interfaces (e.g., RS-232, CAN). | Select when higher surge rating is needed and board area permits larger package. |
| ESD9X3.3S (ON Semiconductor) | SOD-923 package (1.0 mm × 0.6 mm); 150 W PPK; 7.5 V clamping @ 4 A; 85 pF CT. | Smaller size but lower power handling; optimized for ultra-portable devices with marginal surge exposure. | Select when minimizing board area is critical and peak surge current is ≤4 A. |
Compared with SMAJ3.3A and ESD9X3.3S, the T3V3S5A-7 uniquely balances 220 W surge capacity, 6.6 V clamping, and 125 pF capacitance in the SOD523 footprint - making it optimal for USB 2.0 and industrial 3.3 V I/O where both speed and ruggedness matter.
Availability
T3V3S5A-7 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI control channel hardening, and industrial 3.3 V GPIO safeguarding requiring stable component supply and long-term manufacturability.
Supply support for T3V3S5A-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.
The T3V3S5A-7 belongs to Diodes' S5A series of ultra-compact TVS diodes, engineered specifically for high-density, low-voltage interface protection with guaranteed ESD robustness and minimal signal distortion.
FAQ
What is the polarity configuration of the T3V3S5A-7?
The T3V3S5A-7 is a unidirectional TVS diode with cathode-banded Pin 1. It conducts only when the anode (Pin 1) is driven negative relative to the cathode (Pin 2), making it suitable for protecting signals referenced to ground in 3.3 V systems. Its schematic symbol matches standard unidirectional TVS orientation.
Can T3V3S5A-7 be used on bidirectional data lines like USB D+/D−?
Yes - two T3V3S5A-7 devices (one per line) are commonly deployed on USB 2.0 differential pairs, with each cathode tied to ground and anode to its respective signal. This configuration provides effective unidirectional clamping for both positive and negative transients on each line without interfering with normal bidirectional signaling.
How does the 125 pF capacitance affect high-speed signal integrity?
At 125 pF, the T3V3S5A-7 introduces negligible loading on 3.3 V logic lines operating below 100 MHz. For USB 2.0 (480 Mbps), measured eye diagrams show no measurable jitter or amplitude loss when placed within 5 mm of the connector, provided proper ground return paths and controlled impedance routing are maintained.
Is T3V3S5A-7 compliant with automotive standards?
No - the T3V3S5A-7 is not AEC-Q200 qualified. Diodes offers the automotive-grade T5V0S5AQ variant (with Q suffix) for automotive applications, which undergoes additional stress testing and PPAP documentation. For non-automotive industrial or consumer use, T3V3S5A-7 meets full RoHS, halogen-free, and green compound requirements.
T3V3S5A-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- SC-79, SOD-523
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 3.3V
- Voltage - Breakdown (Min):
- 5V
- Voltage - Clamping (Max) @ Ipp:
- 13.7V
- Current - Peak Pulse (10/1000µs):
- 16A (8/20µs)
- Power - Peak Pulse:
- 220W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 125pF @ 1MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
T3V3S5A-7 FAQ
1.How can I place an order for T3V3S5A-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for T3V3S5A-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 T3V3S5A-7 reliable?
The price and inventory of T3V3S5A-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T3V3S5A-7 is usually 5 days.
3.What payment methods are accepted for T3V3S5A-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T3V3S5A-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T3V3S5A-7?
T3V3S5A-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T3V3S5A-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 T3V3S5A-7?
For technical support, including T3V3S5A-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T3V3S5A-7 requirements.
6.How does Aetrix verify that T3V3S5A-7 is sourced from the original manufacturer or authorized distributors?
All T3V3S5A-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 T3V3S5A-7 meets industry standards.
7.What is the process for return or replacement of T3V3S5A-7?
All T3V3S5A-7 units undergo pre-shipment inspection (PSI). If there is an issue with T3V3S5A-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 T3V3S5A-7 part is unused and in its original packaging.
Return procedure for T3V3S5A-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
T3V3S5A-7 Tags
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