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Diodes Incorporated DESD5V2S2UT-7
- Part No.:
- DESD5V2S2UT-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DESD5V2S2UT-7.pdf
- Description:
- TVS DIODE 5.2VWM 9VC SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:14,481
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Product details
Overview
DESD5V2S2UT-7 from Diodes Incorporated is a unidirectional surface-mount TVS diode designed for ESD and surge protection on high-speed data lines. It features a 5.2 V reverse standoff voltage, 260 W peak pulse power (8×20 µs), 30 kV IEC 61000-4-2 ESD immunity (air/contact), <1 µA reverse leakage at VRWM, and 9 V clamping voltage at 1 A. It is used in USB 2.0, HDMI, and Ethernet port protection circuits.
For engineers reviewing the DESD5V2S2UT-7 datasheet, DESD5V2S2UT-7 pinout, DESD5V2S2UT-7 application, or DESD5V2S2UT-7 equivalent, key selection criteria include clamping voltage under 1 A, low capacitance (165–200 pF), AEC-Q101 qualification, SOT-23 footprint compatibility, and unidirectional polarity for DC-biased signal lines.
Technical Context
This TVS diode operates in avalanche breakdown mode to clamp transient overvoltages before downstream ICs are damaged. Its unidirectional configuration allows integration into DC-coupled interfaces where forward conduction must be blocked during normal operation but reverse surge current diverted rapidly.
The device uses a planar junction structure in a molded SOT-23 package with matte tin-plated Alloy 42 leads, achieving 417 °C/W junction-to-ambient thermal resistance on FR-4 PCBs with recommended pad layout. Total capacitance remains stable (165–200 pF at 1 MHz) across 0–5 V reverse bias, critical for maintaining signal integrity on 480 Mbps USB 2.0 lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage (VRWM) | 5.2 V - Maximum continuous DC or RMS voltage the line can carry without triggering clamping. |
| Breakdown Voltage (VBR) | 6.4–7.2 V @ 5 mA - Confirmed avalanche onset range ensuring reliable turn-on before IC damage thresholds. |
| Clamping Voltage (VC) | 9 V @ 1 A - Peak voltage seen by protected IC during 1 A ESD event; enables safe margin below 12 V logic rail limits. |
| Peak Pulse Power (Ppk) | 260 W @ 8×20 µs - Sustains industrial-level surges per IEC 61000-4-5 Level 3 without degradation. |
| Total Capacitance (CT) | 165–200 pF @ 1 MHz - Low enough to avoid signal rise-time degradation on USB 2.0 (480 Mbps) differential pairs. |
| ESD Withstand | ±30 kV air / ±30 kV contact per IEC 61000-4-2 - Meets highest system-level ESD immunity requirement for consumer ports. |
| Operating Temperature | −65 °C to +150 °C - Supports under-hood automotive and industrial environments per AEC-Q101 stress testing. |
Pinout & Package
Package: SOT-23, surface-mount, lead-free/RoHS-compliant, UL 94V-0 molded plastic case, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode | Connected to protected signal line; conducts surge current toward ground when voltage exceeds VBR. |
| Pin 2 | Cathode | Connected to system ground plane; provides low-inductance return path for transient energy dissipation. |
| Pin 3 | Anode (shared) | Internally tied to Pin 1; enables dual-line protection in single SOT-23 footprint (e.g., D+/D− USB pair). |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional ESD protection | Enables use on DC-biased high-speed lines (e.g., USB, HDMI) without forward conduction during normal operation. |
| AEC-Q101 qualified | Validated for automotive applications including infotainment and body control modules requiring high reliability. |
| Low clamping voltage (9 V @ 1 A) | Provides ≥3 V safety margin below 12 V supply rails of interface transceivers, preventing latch-up or oxide damage. |
| Low leakage (<1 µA @ VRWM) | Minimizes standby power loss and avoids false triggering in battery-powered portable devices. |
| SOT-23 footprint | Offers drop-in replacement for legacy TVS diodes while enabling compact PCB layouts for space-constrained USB connectors. |
Applications
| USB 2.0 Port Protection | HDMI Interface Protection |
|---|---|
Use Scenario: Protecting D+ and D− differential pair on laptop or peripheral USB ports against ESD events during hot-plug insertion. IC Role / Device Role: Unidirectional TVS diode placed between each signal line and chassis/ground to clamp transients before reaching USB transceiver IC. Use Value: 165–200 pF capacitance preserves 480 Mbps eye diagram integrity; 9 V clamping prevents damage to 3.3 V tolerant PHY inputs. | Use Scenario: Shielding TMDS clock and data channels in flat-panel display interfaces from handling-induced ESD. IC Role / Device Role: Dual-line TVS in shared-anode SOT-23 configuration protecting both TMDS+ and TMDS− lines simultaneously. Use Value: ±30 kV IEC 61000-4-2 rating ensures compliance with HDMI 1.4a system-level ESD test requirements. |
| Automotive Infotainment | Industrial Ethernet PHY |
Use Scenario: Guarding USB-C or micro-USB ports in vehicle head units exposed to dry-climate ESD and load-dump transients. IC Role / Device Role: AEC-Q101-qualified TVS providing primary surge defense upstream of USB switch and controller ICs. Use Value: −65 °C to +150 °C operating range supports under-dash mounting; 260 W pulse rating handles ISO 7637-2 pulse 1/2b surges. | Use Scenario: Protecting RJ45 connector pins on PoE-enabled industrial switches subject to lightning-induced surges. IC Role / Device Role: Signal-line TVS placed between magnetics and PHY IC to suppress common-mode transients entering via Ethernet cable. Use Value: 5.2 V VRWM matches typical 3.3 V PHY bias; low leakage avoids signal distortion on 100BASE-TX differential pairs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ5.0A | Higher VRWM (5.0 V), larger SMA package (5.3 mm × 4.3 mm), 400 W Ppk, 100 pF CT. | Used in board-level surge protection where space permits; not suitable for high-density USB/HDMI routing. | Select when higher pulse power and lower capacitance are prioritized over footprint size. |
| TPD2E001DRYR | Bi-directional, 2-channel, 1.5 pF CT, 5.5 V VRWM, 100 W Ppk, same SOT-23-3 package. | Optimized for ultra-high-speed interfaces like USB 3.0 or DisplayPort; lacks AEC-Q101 qualification. | Select for sub-1 GHz signal integrity-critical designs where bidirectional clamping is acceptable. |
Compared with SMAJ5.0A and TPD2E001DRYR, DESD5V2S2UT-7 uniquely balances AEC-Q101 qualification, 260 W pulse capability, and 165–200 pF capacitance in SOT-23-making it optimal for automotive USB 2.0 and industrial HDMI endpoints where reliability and density coexist.
Availability
DESD5V2S2UT-7 is available at Aetrix Electronics and suitable for USB 2.0 port protection, HDMI interface hardening, and automotive infotainment systems requiring stable component supply and long-term lifecycle support.
Supply support for DESD5V2S2UT-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.
The DESD5V2S2UT-7 belongs to Diodes' TVS Diode family engineered for robust electrostatic discharge and transient voltage suppression in high-speed digital interfaces and automotive electronics.
FAQ
What is the maximum clamping voltage of DESD5V2S2UT-7 at 15 A?
The datasheet specifies VC = 20 V at IPP = 15 A (8×20 µs waveform). This value is measured across pins 1–3 or 2–3 and reflects worst-case clamping performance under severe surge conditions, ensuring protected ICs remain within absolute maximum ratings.
Can DESD5V2S2UT-7 be used on bidirectional signal lines like RS-485?
No. DESD5V2S2UT-7 is unidirectional and will conduct continuously if reverse-biased beyond its breakdown voltage. For RS-485, a bidirectional TVS such as DESD152D2T-7 (with symmetrical ±15 V clamping) is required to handle AC-coupled differential signals without forward conduction.
Does this part meet JEDEC J-STD-020 moisture sensitivity requirements?
Yes. DESD5V2S2UT-7 is rated Moisture Sensitivity Level 1 per J-STD-020, meaning it may be stored indefinitely at ≤30 °C/60% RH and requires no baking prior to reflow soldering-ideal for standard SMT assembly lines.
How does the shared-anode configuration function in practice?
Pins 1 and 3 are internally shorted as the anode node, while Pin 2 serves as the common cathode. This allows simultaneous protection of two adjacent signal lines (e.g., USB D+/D−) using one SOT-23 device, reducing PCB area and component count versus discrete TVS placements.
DESD5V2S2UT-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5.2V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9V
- Current - Peak Pulse (10/1000µs):
- 15A (8/20µs)
- Power - Peak Pulse:
- 260W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 165pF @ 1MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
DESD5V2S2UT-7 FAQ
1.How can I place an order for DESD5V2S2UT-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DESD5V2S2UT-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 DESD5V2S2UT-7 reliable?
The price and inventory of DESD5V2S2UT-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DESD5V2S2UT-7 is usually 5 days.
3.What payment methods are accepted for DESD5V2S2UT-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DESD5V2S2UT-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DESD5V2S2UT-7?
DESD5V2S2UT-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DESD5V2S2UT-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 DESD5V2S2UT-7?
For technical support, including DESD5V2S2UT-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DESD5V2S2UT-7 requirements.
6.How does Aetrix verify that DESD5V2S2UT-7 is sourced from the original manufacturer or authorized distributors?
All DESD5V2S2UT-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 DESD5V2S2UT-7 meets industry standards.
7.What is the process for return or replacement of DESD5V2S2UT-7?
All DESD5V2S2UT-7 units undergo pre-shipment inspection (PSI). If there is an issue with DESD5V2S2UT-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 DESD5V2S2UT-7 part is unused and in its original packaging.
Return procedure for DESD5V2S2UT-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DESD5V2S2UT-7 Tags
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