My Inquiry
My Account
Semtech Corporation UCLAMP3304A.TCT
- Part No.:
- UCLAMP3304A.TCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- SOT-563, SOT-666
- Datasheet:
-
UCLAMP3304A.TCT.pdf
- Description:
- TVS DIODE 3.3VWM 8VC SC89-6
- Quantity:
- Payment:
- Shipping:
Inventory:82,177
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
UCLAMP3304A.TCT from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS protection of 3.3V I/O and power lines in USB Type-C, IoT, and industrial interfaces. It delivers ±30kV IEC 61000-4-2 ESD immunity, clamps at 5.8V (IPP = 24A), maintains <20mΩ dynamic resistance, and operates from –40°C to +125°C in a 1.6mm × 1.6mm DFN-6 package.
For engineers reviewing the UCLAMP3304A.TCT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage stability across temperature, low capacitance (12pF), ultra-low leakage (<100nA), and compatibility with USB PD 3.0 and USB4 signal integrity requirements.
Technical Context
The UCLAMP3304A.TCT uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that initiates conduction when transient voltage exceeds breakdown. Unlike conventional TVS diodes, its clamping voltage remains nearly constant over the full rated peak pulse current range due to decreasing RDS(on) under surge conditions.
It supports unsymmetrical line protection with ±1kV IEC 61000-4-5 surge rating (1.2/50μs voltage + 8/20μs current, RS = 42Ω), and achieves 12pF junction capacitance at VR = 3.3V - optimized for high-speed data lines including USB SS, PCIe, and HDMI.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 3.3V - matches standard I/O rail voltage for USB Type-C CC/SBU, HDMI CEC, and low-voltage sensor interfaces. |
| Clamping Voltage (IPP = 24A) | 5.8V - stays below 6V damage threshold of most 3.3V logic and USB PD controllers. |
| Junction Capacitance | 12pF @ 3.3V - enables use on 10Gbps+ data lanes without signal integrity degradation. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds Level 4 system-level ESD immunity requirements. |
| Dynamic Resistance | 18mΩ - ensures minimal voltage rise during 40A transients, preserving clamping accuracy. |
| Leakage Current | <100nA @ 3.3V - avoids loading sensitive analog or battery-backed circuits. |
| Operating Temperature | –40°C to +125°C - supports industrial and automotive under-hood applications. |
Pinout & Package
UCLAMP3304A.TCT is housed in a Pb-free, RoHS-compliant 1.6mm × 1.6mm × 0.55mm DFN-6 package with exposed thermal pad (no solder mask defined). All six terminals are arranged in a dual-row configuration: pins 1–3 form the ground bank; pins 4–6 serve as parallel input terminals for low-inductance transient shunting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | Ground (GND) | Low-inductance return path for surge current; all three must be connected to solid ground plane via multiple vias. |
| 4, 5, 6 | Input (IN) | Parallel-connected protected line terminals; equal current sharing ensures 40A total IPP handling capability. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies ≤0.2V across 1–40A IPP range - eliminates derating for temperature or current. |
| Ultra-low capacitance | 12pF at 3.3V enables placement directly on USB SS TX/RX, DP/HDMI lanes without equalization penalty. |
| High-energy surge rating | 40A (8/20μs) and ±1kV (1.2/50μs + 8/20μs, RS = 42Ω) meets IEC 61000-4-5 industrial immunity standards. |
| Low-leakage protection | <100nA reverse leakage preserves battery life in always-on IoT sensors and wearables. |
| Thermal-stable operation | Clamping voltage drift <±0.1V from –40°C to +125°C - guarantees consistent protection across environmental extremes. |
Applications
| USB Type-C Power Delivery | Industrial Sensor Interfaces |
|---|---|
|
Use Scenario: Protecting CC and SBU lines in USB PD 3.1 implementations where bus voltage swings up to 20V during negotiation. IC Role / Device Role / Timing Role: Transient diverting suppressor placed between connector and PD controller to clamp fast-rising ESD/EOS events before they reach silicon. Use Value: Prevents latch-up and gate oxide damage in PD controllers while maintaining <12pF loading for robust communication handshake timing. |
Use Scenario: Shielding 4–20mA loop-powered sensors and RS-485 nodes in factory automation systems exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary front-end protector on analog input/output lines, absorbing multi-kV transients before signal conditioning stages. Use Value: Enables single-device protection with 40A surge capacity and stable 5.8V clamping - eliminating need for cascaded TVS + MOV solutions. |
| HDMI 2.1 CEC Channel | Automotive Infotainment USB |
|
Use Scenario: Securing HDMI CEC (Consumer Electronics Control) line operating at 3.3V against ESD from user-accessible ports in AV receivers and displays. IC Role / Device Role / Timing Role: Low-capacitance shunt protector placed adjacent to HDMI connector to minimize stub length and preserve 38kHz CEC carrier integrity. Use Value: 12pF capacitance avoids CEC signal distortion; ±30kV ESD rating ensures compliance with IEC 61000-4-2 Level 4 system testing. |
Use Scenario: Protecting USB host ports in automotive head units subjected to load dump and ISO 7637-2 pulses during vehicle ignition cycles. IC Role / Device Role / Timing Role: High-energy transient suppressor on VBUS and D+/D− lines, coordinated with uClamp2411ZA on CC lines for full-port coverage. Use Value: 40A peak pulse rating and –40°C to +125°C operation ensure reliable protection across automotive thermal and electrical stress profiles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD4E001DQAR | 4-channel 3.3V TVS array; 12pF/channel, 6.5V clamping (IPP = 4A); no FET-based constant-clamp architecture. | Limited to lower-energy ESD-only scenarios; not rated for 40A IEC 61000-4-5 surges. | Choose for cost-sensitive, low-surge environments where full industrial surge immunity is unnecessary. |
| SP3205-01UTG | Single-line 3.3V TVS; 15pF, 7.5V clamping (IPP = 12A); junction-based, higher dynamic resistance (~150mΩ). | Higher clamping voltage and temperature sensitivity limit use in USB PD and high-speed data lines. | Acceptable only where board space allows larger packages and design tolerates >7V clamping at elevated temperatures. |
Compared with TPD4E001DQAR and SP3205-01UTG, UCLAMP3304A.TCT provides superior surge robustness (40A vs. ≤12A), tighter clamping control (5.8V vs. ≥6.5V), and stable performance across temperature - making it the preferred choice for USB Type-C, industrial Ethernet, and automotive USB host protection where reliability under extreme EOS is critical.
Availability
UCLAMP3304A.TCT is available at Aetrix Electronics and suitable for USB Type-C PD designs, industrial sensor nodes, HDMI CEC interfaces, and automotive infotainment systems requiring stable component supply and guaranteed long-term availability.
Supply support for UCLAMP3304A.TCT 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 interface protection with FET-based constant-clamp architecture - engineered specifically for USB, HDMI, PCIe, and industrial serial buses demanding low capacitance, stable clamping, and multi-kV surge resilience.
FAQ
What is the maximum peak pulse current rating for UCLAMP3304A.TCT?
UCLAMP3304A.TCT is rated for 40A peak pulse current per IEC 61000-4-5 (8/20μs waveform). This rating applies when all three input pins (4–6) and all three ground pins (1–3) are properly connected to minimize parasitic inductance. The device maintains 5.8V clamping at this current level, enabling robust protection against lightning-induced surges in industrial and automotive applications. UCLAMP3304A.TCT achieves this performance using a surge-rated FET architecture rather than conventional PN-junction TVS technology.
Does UCLAMP3304A.TCT meet IEC 61000-4-2 Level 4 ESD requirements?
Yes, UCLAMP3304A.TCT delivers ±30kV contact discharge and ±30kV air discharge per IEC 61000-4-2 - exceeding Level 4 (±15kV contact / ±15kV air) by a factor of two. Its solid-state FET-based structure ensures consistent clamping behavior across repeated ESD strikes without degradation. This makes UCLAMP3304A.TCT suitable for consumer-facing ports in notebooks, docking stations, and industrial HMIs where end-user ESD exposure is frequent. UCLAMP3304A.TCT's performance is verified across its full operating temperature range.
Can UCLAMP3304A.TCT be used on USB SuperSpeed differential pairs?
Yes, UCLAMP3304A.TCT is explicitly designed for high-speed data lines: its 12pF junction capacitance at 3.3V and 5.8V clamping voltage enable direct placement on USB 3.2 Gen 2x2 and USB4 TX/RX lanes without violating eye diagram or jitter budgets. Layout best practices require symmetric routing and grounding of all six pins - especially minimizing trace length between pins 4–6 and the protected differential pair. UCLAMP3304A.TCT's low dynamic resistance (18mΩ) prevents signal reflection artifacts during transient events.
How does UCLAMP3304A.TCT differ from traditional TVS diodes in clamping behavior?
Unlike conventional TVS diodes whose clamping voltage rises linearly with peak pulse current (VC = VBR + IPP × RDYN), UCLAMP3304A.TCT uses a triggered FET that exhibits decreasing RDS(on) under surge - resulting in near-constant clamping voltage (5.8V ±0.2V) from 1A to 40A. This eliminates thermal derating and ensures predictable protection margins across temperature and current extremes. UCLAMP3304A.TCT's architecture also shifts energy dissipation from the junction to the FET channel, improving reliability. These traits are confirmed in Semtech's TDS2211P-family characterization data, which shares core design principles with UCLAMP3304A.TCT.
Is UCLAMP3304A.TCT compatible with lead-free reflow processes?
Yes, UCLAMP3304A.TCT is fully compatible with standard lead-free reflow profiles (J-STD-020, peak temperature ≤260°C). Its DFN-6 package features lead-free terminal finish and UL 94V-0 molding compound. The device has been qualified for MSL Level 1 (unlimited floor life) when stored per J-STD-033 guidelines. No special pre-bake or moisture sensitivity handling is required prior to assembly. UCLAMP3304A.TCT's thermal design accommodates repeated reflow cycles without parameter shift or mechanical delamination.
UCLAMP3304A.TCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- SOT-563, SOT-666
- Series:
- uClamp®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 4
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 3.3V (Max)
- Voltage - Breakdown (Min):
- 3.5V
- Voltage - Clamping (Max) @ Ipp:
- 8V
- Current - Peak Pulse (10/1000µs):
- 5A (8/20µs)
- Power - Peak Pulse:
- 40W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 22pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-89 (SOT-666)
UCLAMP3304A.TCT FAQ
1.How can I place an order for UCLAMP3304A.TCT through Aetrix?
Please submit a Request for Quotation (RFQ) for UCLAMP3304A.TCT 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 UCLAMP3304A.TCT reliable?
The price and inventory of UCLAMP3304A.TCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCLAMP3304A.TCT is usually 5 days.
3.What payment methods are accepted for UCLAMP3304A.TCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCLAMP3304A.TCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCLAMP3304A.TCT?
UCLAMP3304A.TCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCLAMP3304A.TCT 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 UCLAMP3304A.TCT?
For technical support, including UCLAMP3304A.TCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCLAMP3304A.TCT requirements.
6.How does Aetrix verify that UCLAMP3304A.TCT is sourced from the original manufacturer or authorized distributors?
All UCLAMP3304A.TCT 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 UCLAMP3304A.TCT meets industry standards.
7.What is the process for return or replacement of UCLAMP3304A.TCT?
All UCLAMP3304A.TCT units undergo pre-shipment inspection (PSI). If there is an issue with UCLAMP3304A.TCT, 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 UCLAMP3304A.TCT part is unused and in its original packaging.
Return procedure for UCLAMP3304A.TCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UCLAMP3304A.TCT Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
