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Semtech Corporation RCLAMP0512TQTCT
- Part No.:
- RCLAMP0512TQTCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 0402 (1006 Metric)
- Datasheet:
-
RCLAMP0512TQTCT.pdf
- Description:
- TVS DIODE 5VWM 8.5VC SGP1006N3T
- Quantity:
- Payment:
- Shipping:
Inventory:78,111
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Product details
Overview
RClamp0512TQTCT from Semtech is a dual-line transient voltage suppression (TVS) diode array designed for secondary ESD and surge protection on high-speed 5V data lines. It delivers 30kV IEC 61000-4-2 contact/air ESD immunity, 20A 8/20µs lightning surge capability, and ultra-low 3pF capacitance - enabling use in USB 2.0, 10/100/1000 Ethernet, and 2.5GbE interfaces without signal integrity degradation.
For engineers reviewing the RClamp0512TQTCT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage under 8.5V at 20A, dynamic resistance of 0.075Ω, AEC-Q100 Grade 1 qualification, and SGP1006N3T 3-pin flow-through package compatibility with high-density PCB layouts.
Technical Context
The RClamp0512TQTCT employs silicon-avalanche snap-back ("crow-bar") technology to achieve low clamping voltage during transients while maintaining high impedance (<0.1μA leakage at 5V) during normal operation. Its multi-junction structure triggers at 6.5–11.5V breakdown (VBR) and sustains conduction down to 75mA holding current (IH), ensuring reliable turn-off after surge decay.
It protects two independent 5V data lines (pins 1 & 2 referenced to pin 3) with differential capacitance of ≤2pF between pins 1–2 and ≤3pF from either line to ground. The device operates across –40°C to +125°C and is optimized for placement on the PHY side of Ethernet magnetics or across USB D+/D– pairs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage (VRWM) | 5 V - Maximum continuous DC voltage the device blocks without leakage; matches standard USB/Ethernet PHY supply rails. |
| Breakdown Voltage (VBR) | 6.5–11.5 V - Threshold at which avalanche conduction initiates; ensures robust margin above 5V operating rail. |
| Clamping Voltage (VC) | ≤8.5 V at 20A - Peak voltage seen by protected IC during 8/20µs lightning surge; limits stress on downstream PHY transceivers. |
| Junction Capacitance (CJ) | ≤3 pF (pin-to-ground), ≤2 pF (pin-to-pin) - Enables >1 GHz signal bandwidth with minimal insertion loss in USB 2.0 and Gigabit Ethernet. |
| Dynamic Resistance (RDYN) | 0.075 Ω typical - Low on-state impedance reduces voltage overshoot during fast ESD events (e.g., 0.2/100ns TLP). |
| ESD Withstand | ±30 kV contact/air per IEC 61000-4-2 - Exceeds industrial and automotive ESD immunity requirements without external shielding. |
| Surge Rating | 20 A (8/20 µs) per IEC 61000-4-5 - Handles induced lightning surges on Ethernet/USB cabling without failure. |
Pinout & Package
Package: SGP1006N3T - 3-pin, flow-through, lead-free NiAu surface-mount package measuring 1.0 × 0.6 × 0.4 mm; optimized for minimal parasitic inductance and simplified PCB routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Data Line A (e.g., USB D+, ETH TX+, RX+) | Input/output terminal for first high-speed signal line; connected directly to trace with minimal stub length. |
| Pin 2 | Data Line B (e.g., USB D−, ETH TX−, RX−) | Input/output terminal for second high-speed signal line; forms differential pair with Pin 1. |
| Pin 3 | Ground Reference | Low-inductance return path to system ground plane; must be connected via short trace and multiple microvias for optimal ESD performance. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive environments (–40°C to +125°C junction), supporting infotainment and ADAS Ethernet links. |
| Ultra-low 3pF max capacitance | Preserves signal integrity on 480 Mbps USB 2.0 and 1.25 Gbps Ethernet channels with <0.5 dB insertion loss up to 1 GHz. |
| 0.075 Ω dynamic resistance | Reduces clamping overshoot during sub-nanosecond ESD events, lowering risk of PHY latch-up or damage. |
| Flow-through SGP1006N3T package | Enables straight-through routing of differential pairs without vias or bends, minimizing impedance discontinuities. |
| 30kV IEC 61000-4-2 ESD rating | Meets or exceeds Level 4 ESD immunity for industrial and automotive end-equipment without additional shielding layers. |
Applications
| USB 2.0 Interface Protection | Ethernet PHY Protection (10/100/1000BASE-T) |
|---|---|
Use Scenario: Protecting host/device USB 2.0 ports against user-handling ESD and cable discharge events. IC Role / Device Role / Timing Role: Dual-line TVS array placed across D+ and D– differential pair, with Pin 3 grounded to minimize common-mode surge coupling. Use Value: Clamps ESD transients to ≤5.2V at 16A TLP while adding only 2pF interline capacitance - preserving full-speed USB timing margins and eye diagram integrity. |
Use Scenario: Secondary surge protection on the PHY side of integrated magnetics in Gigabit Ethernet switches and controllers. IC Role / Device Role / Timing Role: Two-channel clamp protecting TX+/TX− and RX+/RX− pairs individually; mounted adjacent to magnetics to reduce parasitic inductance. Use Value: Limits 20A lightning-induced surge to ≤8.5V peak, preventing PHY latch-up or permanent damage while maintaining <1% signal attenuation at 125 MHz. |
| Automotive Infotainment Ethernet | Industrial 2.5GbE Backplane Links |
Use Scenario: ESD hardening of Ethernet AVB/TSN links in automotive head units and ADAS domain controllers. IC Role / Device Role / Timing Role: AEC-Q100 qualified dual-line protector on 100BASE-T1 or 1000BASE-T1 PHY interfaces, operating continuously at 125°C ambient. Use Value: Delivers ±30kV ESD immunity and 20A surge handling without derating - eliminating need for redundant protection stages in space-constrained vehicle ECUs. |
Use Scenario: High-reliability surge suppression on 2.5GbE backplane traces in industrial PLCs and networked HMIs. IC Role / Device Role / Timing Role: Low-capacitance TVS array safeguarding differential SerDes lanes against factory-floor EFT and lightning-induced ground shifts. Use Value: Maintains <0.3 UI jitter contribution at 2.5 Gbps due to 3pF max capacitance and sub-100ps response time - ensuring BER <10−12 in harsh EMC environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-line ESD/surge protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SP1003-010HTG | Higher 12V working voltage; 15pF capacitance; 30kV ESD rating; SO-8 package. | Targeted at 12V industrial buses (CAN, RS-485); unsuitable for USB/Ethernet due to excessive capacitance. | Select only for non-high-speed, higher-voltage interfaces where layout density is less critical. |
| TPD2E001DRYR | Lower 5.5V working voltage; 1.5pF capacitance; 8kV IEC 61000-4-2; 6-pin SOT-563 package. | Designed for portable consumer USB/DisplayPort; lacks IEC 61000-4-5 surge rating and AEC-Q100 qualification. | Use only in cost-sensitive, non-automotive, low-energy ESD-only scenarios - not for lightning or industrial EFT. |
Compared with SP1003-010HTG and TPD2E001DRYR, RClamp0512TQTCT uniquely balances 5V compatibility, 3pF capacitance, 20A surge rating, and AEC-Q100 Grade 1 - making it the only option qualified for automotive Ethernet and industrial 2.5GbE where both ESD robustness and signal fidelity are mandatory.
Availability
RClamp0512TQTCT is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial Ethernet switches, and USB 2.0 peripheral designs requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant surge protection.
Supply support for RClamp0512TQTCT 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 analog and mixed-signal ICs for precision sensing, power management, and protection solutions.
The RClamp® product line is engineered specifically for high-speed interface protection - combining low capacitance, fast snap-back response, and high surge current capability to safeguard Ethernet, USB, HDMI, and automotive data links.
FAQ
What is the maximum clamping voltage of RClamp0512TQTCT under a 20A 8/20µs surge?
The RClamp0512TQTCT clamps to a maximum of 8.5 V when subjected to a 20A 8/20µs lightning surge waveform (per IEC 61000-4-5). This value is measured between pins 1 or 2 and pin 3, with source impedance of 8 Ω. The low clamping voltage ensures downstream PHY ICs remain within safe operating limits during high-energy transients.
Does RClamp0512TQTCT require connection of Pin 3 to ground in all applications?
Yes - Pin 3 must be connected to a low-inductance ground plane in every application. The RClamp0512TQTCT functions as a bidirectional shunt device between each signal line (pins 1 and 2) and ground (pin 3). Leaving Pin 3 unconnected renders the device nonfunctional, as no current path exists for ESD or surge energy dissipation.
Can RClamp0512TQTCT be used for USB 3.0 SuperSpeed (5 Gbps) protection?
No - RClamp0512TQTCT is not recommended for USB 3.0 SuperSpeed differential pairs. Its 3pF capacitance introduces excessive signal loss above 1 GHz. For 5 Gbps operation, Semtech specifies RClamp3324T (designed for 5Gb/s) or RClamp0561Z (for 10Gb/s), both offering sub-0.2pF capacitance and optimized high-frequency response.
What is the meaning of "snap-back" technology in RClamp0512TQTCT?
"Snap-back" refers to the RClamp0512TQTCT's silicon-avalanche crow-bar behavior: once triggered above its breakdown voltage (~6.5–11.5 V), the device rapidly transitions to a low-impedance conducting state (dynamic resistance ~0.075 Ω), holding voltage near 5 V during surge current flow. This minimizes clamping voltage compared to standard TVS diodes and improves protection efficacy.
Is RClamp0512TQTCT compatible with lead-free reflow processes?
Yes - RClamp0512TQTCT is fully compatible with lead-free reflow per JEDEC J-STD-020. Its NiAu lead finish and SGP1006N3T package support peak temperatures up to 260°C. Semtech provides detailed assembly guidelines including stencil aperture dimensions (0.220 × 0.480 mm), 0.100 mm stencil thickness, and Type 4 solder paste recommendations to ensure reliable solder joint formation.
RCLAMP0512TQTCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 0402 (1006 Metric)
- Series:
- RailClamp®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6.5V
- Voltage - Clamping (Max) @ Ipp:
- 8.5V
- Current - Peak Pulse (10/1000µs):
- 20A (1.2/50µs)
- Power - Peak Pulse:
- 170W
- Power Line Protection:
- Yes
- Applications:
- Ethernet
- Capacitance @ Frequency:
- 2pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SGP1006N3T
RCLAMP0512TQTCT FAQ
1.How can I place an order for RCLAMP0512TQTCT through Aetrix?
Please submit a Request for Quotation (RFQ) for RCLAMP0512TQTCT 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 RCLAMP0512TQTCT reliable?
The price and inventory of RCLAMP0512TQTCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RCLAMP0512TQTCT is usually 5 days.
3.What payment methods are accepted for RCLAMP0512TQTCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RCLAMP0512TQTCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RCLAMP0512TQTCT?
RCLAMP0512TQTCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RCLAMP0512TQTCT 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 RCLAMP0512TQTCT?
For technical support, including RCLAMP0512TQTCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RCLAMP0512TQTCT requirements.
6.How does Aetrix verify that RCLAMP0512TQTCT is sourced from the original manufacturer or authorized distributors?
All RCLAMP0512TQTCT 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 RCLAMP0512TQTCT meets industry standards.
7.What is the process for return or replacement of RCLAMP0512TQTCT?
All RCLAMP0512TQTCT units undergo pre-shipment inspection (PSI). If there is an issue with RCLAMP0512TQTCT, 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 RCLAMP0512TQTCT part is unused and in its original packaging.
Return procedure for RCLAMP0512TQTCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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