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Semtech Corporation UCLAMP0301PQTNT
- Part No.:
- UCLAMP0301PQTNT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 0402 (1006 Metric)
- Datasheet:
-
UCLAMP0301PQTNT.pdf
- Description:
- TVS DIODE 3VWM 8VC SLP1006P2
- Quantity:
- Payment:
- Shipping:
Inventory:15,782
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Product details
Overview
UCLAMP0301PQTNT from Semtech is a transient diverting suppressor (TDS) designed for single-line EOS/ESD protection in 3.3V I/O interfaces. It delivers ±30kV IEC 61000-4-2 contact/air ESD immunity, clamps at 5.8V (IPP = 24A), and features 0.55pF junction capacitance - enabling robust protection without signal integrity degradation in high-speed USB 2.0, HDMI, or MIPI lines.
For engineers reviewing the UCLAMP0301PQTNT datasheet, pinout, applications, or equivalent options, key selection criteria include low clamping voltage stability across temperature, sub-1pF capacitance for >480Mbps data rates, 3.3V working voltage compliance, and DFN-2 package compatibility with space-constrained portable designs.
Technical Context
The UCLAMP0301PQTNT uses a surge-rated FET as its primary protection element, activated by an integrated precision trigger circuit. Unlike conventional TVS diodes, its clamping voltage remains nearly constant (5.7–5.8V) from −40°C to +125°C and across IPP = 1A to 24A due to ultra-low dynamic resistance (<0.1Ω).
It operates as a shunt device between a protected line and ground, with bidirectional conduction capability and no DC blocking. Its 0.55pF capacitance at VR = 3.3V and 1MHz ensures minimal signal distortion on high-speed differential pairs, while its 24A peak pulse current rating (tp = 8/20μs) meets IEC 61000-4-5 Level 3 surge requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage (VRWM) | 3.3 V - matches standard USB 2.0, HDMI, and MIPI I/O rail voltage; prevents false triggering during normal operation |
| Clamping Voltage (VC) | 5.8 V @ IPP = 24A - stays below 6.0V threshold of most 3.3V transceivers, ensuring reliable overvoltage shutdown without latch-up |
| Junction Capacitance (CJ) | 0.55 pF @ VR = 3.3V, 1MHz - enables full-speed USB 2.0 (480 Mbps) and HDMI 1.4a compliance with <0.1dB insertion loss |
| ESD Withstand | ±30 kV contact & air per IEC 61000-4-2 - exceeds industrial and consumer ESD immunity requirements for handheld and docking interfaces |
| Peak Pulse Current | 24 A @ tp = 8/20μs - supports IEC 61000-4-5 surge testing at Level 3 (1kV line-to-ground, RS = 42Ω) |
| Dynamic Resistance | 0.08 Ω - enables flat clamping curve; eliminates voltage rise with increasing surge current unlike TVS diodes |
| Operating Temperature | −40°C to +125°C - maintains specification stability across automotive cabin, industrial edge, and mobile operating environments |
Pinout & Package
UCLAMP0301PQTNT is housed in a Pb-free, RoHS-compliant 2-pin DFN package measuring 1.0mm × 0.6mm × 0.5mm, optimized for ultra-dense PCB layouts near connectors and high-speed I/O ports.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode / Input | Connected to protected I/O line (e.g., USB D+, HDMI TMDS+, MIPI D+); carries transient current into device during EOS event |
| Pin 2 | Cathode / Ground | Direct low-inductance connection to system ground plane; critical for achieving rated 24A surge performance and minimizing clamping overshoot |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies <±0.1V from −40°C to +125°C and across 1–24A surge range - eliminates thermal derating design margins |
| Ultra-low capacitance | 0.55pF enables placement directly on high-speed traces without equalization or pre-emphasis compensation |
| FET-based shunt topology | Dissipates surge energy in low-Rds(on) channel instead of PN junction - avoids thermal runaway and extends lifetime under repeated surges |
| IEC 61000-4-4 EFT immunity | ±4kV (5/50ns) - protects against burst noise from switching power supplies and motor drives in industrial IoT gateways |
| DFN-2 footprint | 1.0×0.6mm body with 0.35mm pitch - fits within 0.2mm trace clearance on 6-layer HDI PCBs used in smartphones and wearables |
Applications
| USB 2.0 Interface Protection | HDMI 1.4a Data Lane Protection |
|---|---|
Use Scenario: Protecting D+ and D− lines of USB 2.0 host/device ports against ESD events during cable insertion and hot-plug operations. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed inline between connector and PHY, responding within <1ns to divert >24A surge current to ground. Use Value: Maintains 480 Mbps data integrity with <0.55pF loading and clamps to 5.8V - preventing damage to USB transceivers rated for max 6.0V absolute maximum. |
Use Scenario: Safeguarding TMDS+ and TMDS− differential pairs in HDMI 1.4a source/sink devices against ESD and lightning-induced surges. IC Role / Device Role / Timing Role: Bidirectional clamping device mounted at HDMI receptacle, providing sub-nanosecond response to fast-rising transients without degrading 165 MHz pixel clock eye diagram. Use Value: 0.55pF capacitance ensures <0.1dB insertion loss at 165 MHz; 5.8V clamping protects HDMI controller I/Os rated for 5.5V–6.0V VDDIO. |
| MIPI D-PHY Camera Interface | Industrial Sensor Hub I/O Protection |
Use Scenario: Securing high-speed D+ and D− lanes connecting image sensors to application processors in smartphone and automotive ADAS cameras. IC Role / Device Role / Timing Role: Low-capacitance shunt suppressor placed adjacent to FPC connector, preserving signal rise/fall times <150ps required for MIPI D-PHY v1.2 1.5 Gbps operation. Use Value: Enables direct integration without retiming or re-driving; 5.8V clamping aligns with 3.3V I/O tolerance of CIS and AP SoCs. |
Use Scenario: Protecting analog and digital I/O pins (e.g., UART, I²C, GPIO) of sensor fusion hubs in factory automation controllers exposed to EFT and surge noise. IC Role / Device Role / Timing Role: Single-line protector for 3.3V logic rails, handling repetitive ±4kV EFT bursts and 1kV surges without parameter drift or leakage increase. Use Value: Stable 0.08Ω dynamic resistance ensures consistent clamping across 10⁵+ surge events - critical for unattended industrial deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD4E001DPYR | 4-channel array in DQFN-10; 0.5pF/channel, 6.5V clamping @ 24A; higher parasitic inductance due to shared ground pad | Requires routing four lines simultaneously; less optimal for single-line protection where board space is constrained | Choose when protecting multiple I/Os (e.g., USB + I²C + UART) on same IC to reduce BOM count |
| SP1003-01UTG | Single-line TVS diode in SOD-323; 0.6pF, 9.2V clamping @ 24A; fixed RDYN = 0.5Ω causes voltage rise with current | Clamps ~3.4V higher than UCLAMP0301PQTNT - risks exceeding 6.0V I/O absolute max in worst-case surge + temp conditions | Acceptable only if system-level margin allows ≥9.0V transient tolerance on protected node |
Compared with TPD4E001DPYR and SP1003-01UTG, UCLAMP0301PQTNT provides superior clamping voltage stability (±0.1V vs. ±1.5V), lower dynamic resistance (0.08Ω vs. ≥0.5Ω), and smaller footprint (1.0×0.6mm vs. 2.5×1.0mm), making it optimal for single-line, space-critical, high-reliability 3.3V interface protection.
Availability
UCLAMP0301PQTNT is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI 1.4a data lane safeguarding, and MIPI D-PHY camera interface hardening requiring stable component supply across high-volume consumer, industrial, and automotive programs.
Supply support for UCLAMP0301PQTNT 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
Semtech Corporation is a U.S.-based fabless semiconductor company specializing in high-performance analog and mixed-signal ICs for precision sensing, protection, and signal integrity.
The UCLAMP series targets high-speed digital interface protection, combining FET-based transient suppression with ultra-low capacitance to enable next-generation connectivity in portable, automotive, and industrial systems.
FAQ
What is the maximum working voltage supported by UCLAMP0301PQTNT?
UCLAMP0301PQTNT has a reverse stand-off voltage (VRWM) of 3.3 V, meaning it is rated for continuous operation on 3.3V nominal I/O rails. It begins clamping above ~4.5V and maintains 5.8V clamping up to 24A surge current. This makes UCLAMP0301PQTNT ideal for protecting USB 2.0, HDMI, and MIPI D-PHY interfaces where the supply rail is tightly regulated at 3.3V.
How does UCLAMP0301PQTNT differ from traditional TVS diodes in clamping behavior?
Unlike conventional TVS diodes whose clamping voltage rises linearly with surge current (VC = VBR + IPP × RDYN), UCLAMP0301PQTNT uses a triggered FET architecture that holds clamping voltage nearly constant - varying only ±0.1V from 1A to 24A and −40°C to +125°C. This eliminates thermal derating and ensures predictable protection margins across operating conditions for UCLAMP0301PQTNT.
Can UCLAMP0301PQTNT be used on differential high-speed lines like USB D+/D− without signal degradation?
Yes - UCLAMP0301PQTNT's 0.55pF junction capacitance at 3.3V bias introduces negligible impedance mismatch on 90Ω differential pairs. Measured insertion loss remains <0.1dB up to 250 MHz, supporting full-speed USB 2.0 (480 Mbps) and HDMI 1.4a (165 MHz pixel clock) without equalization. Each line requires its own UCLAMP0301PQTNT device for optimal common-mode rejection.
What is the recommended PCB layout for optimal surge performance of UCLAMP0301PQTNT?
Place UCLAMP0301PQTNT within 3 mm of the protected connector, with Pin 1 (input) routed directly to the I/O trace and Pin 2 (ground) connected via shortest possible path to a solid ground plane using ≥2 vias. Avoid stubs or tees; use 0.2mm trace width matching controlled impedance. Thermal relief on ground pad is unnecessary - the device dissipates energy in the FET channel, not the die junction.
Is UCLAMP0301PQTNT compliant with industrial ESD and surge immunity standards?
Yes - UCLAMP0301PQTNT is certified to ±30kV contact and air discharge per IEC 61000-4-2, ±4kV EFT per IEC 61000-4-4 (5/50ns), and 24A surge per IEC 61000-4-5 (8/20μs). These ratings meet or exceed Level 4 ESD and Level 3 surge requirements for EN 61000-6-2 and IEC 61000-6-4, making it suitable for industrial control panels and ruggedized IoT endpoints.
UCLAMP0301PQTNT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 0402 (1006 Metric)
- Series:
- uClamp®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 3V (Max)
- Voltage - Breakdown (Min):
- 3.1V
- Voltage - Clamping (Max) @ Ipp:
- 8V
- Current - Peak Pulse (10/1000µs):
- 5A (8/20µs)
- Power - Peak Pulse:
- 40W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 25pF @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SLP1006P2
UCLAMP0301PQTNT FAQ
1.How can I place an order for UCLAMP0301PQTNT through Aetrix?
Please submit a Request for Quotation (RFQ) for UCLAMP0301PQTNT 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 UCLAMP0301PQTNT reliable?
The price and inventory of UCLAMP0301PQTNT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCLAMP0301PQTNT is usually 5 days.
3.What payment methods are accepted for UCLAMP0301PQTNT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCLAMP0301PQTNT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCLAMP0301PQTNT?
UCLAMP0301PQTNT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCLAMP0301PQTNT 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 UCLAMP0301PQTNT?
For technical support, including UCLAMP0301PQTNT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCLAMP0301PQTNT requirements.
6.How does Aetrix verify that UCLAMP0301PQTNT is sourced from the original manufacturer or authorized distributors?
All UCLAMP0301PQTNT 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 UCLAMP0301PQTNT meets industry standards.
7.What is the process for return or replacement of UCLAMP0301PQTNT?
All UCLAMP0301PQTNT units undergo pre-shipment inspection (PSI). If there is an issue with UCLAMP0301PQTNT, 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 UCLAMP0301PQTNT part is unused and in its original packaging.
Return procedure for UCLAMP0301PQTNT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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