My Inquiry
My Account
Semtech Corporation RCLAMP2451Y.TFT
- Part No.:
- RCLAMP2451Y.TFT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 2-XFDFN
- Datasheet:
-
RCLAMP2451Y.TFT.pdf
- Description:
- TVS DIODE 24VWM 7VC SLP0603P2X3E
- Quantity:
- Payment:
- Shipping:
Inventory:3,455
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
RCLAMP2451Y.TFT from Semtech is a bidirectional ultra-low-capacitance TVS diode designed for ESD protection of NFC antenna circuits and RF signal lines. It features a working voltage of ±24V, typical junction capacitance of 0.35pF at 0V, dynamic resistance of 0.16Ω (typ), ESD withstand of ±16kV contact per IEC 61000-4-2, and resides in an SLP0603P2X3E package (0.6 × 0.3 × 0.25 mm).
For engineers reviewing the RCLAMP2451Y.TFT datasheet, pinout, applications, or equivalent options, key selection criteria include low RF signal distortion, high ESD robustness on NFC resonator paths, minimal clamping voltage under transient stress, and compatibility with high-speed 13.56 MHz NFC interfaces without signal clipping.
Technical Context
The RCLAMP2451Y.TFT uses silicon-avalanche solid-state technology to deliver fast response (<1 ns) and stable clamping performance across repeated ESD events. Its bidirectional architecture supports AC-coupled NFC antenna signals up to ±24V peak, while its ultra-low capacitance ensures negligible impact on 13.56 MHz carrier integrity and harmonic content.
Designed specifically for board-level protection of NFC transceiver ports, the device operates without degradation after ≥1000 IEC 61000-4-2 Level 4 ESD strikes and maintains low dynamic resistance (0.16Ω typ) to minimize voltage overshoot during transient conduction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | ±24V - Matches NFC resonator circuit peak AC swing without forward conduction or signal clipping. |
| Junction Capacitance | 0.35pF (typ @ 0V) - Ensures <0.1 dB insertion loss at 13.56 MHz; avoids RF harmonic distortion. |
| ESD Withstand | ±16kV contact per IEC 61000-4-2 - Meets highest consumer port immunity requirement for handheld NFC devices. |
| Dynamic Resistance | 0.16Ω (typ) - Limits clamping voltage rise during ESD pulse; protects downstream Schottky diodes in matching networks. |
| Leakage Current | <100nA @ ±24V - Prevents DC loading of high-impedance NFC antenna nodes. |
| Package | SLP0603P2X3E (0.6 × 0.3 × 0.25 mm) - Enables placement directly at antenna feed point with minimal parasitic inductance. |
Pinout & Package
Package: SLP0603P2X3E - 2-pin ultra-miniature leadless package with NiAu finish, 0.6 mm length, 0.3 mm width, 0.25 mm nominal height, and bottom-terminal configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode / Cathode (bidirectional) | Electrically symmetrical terminal; connects to NFC antenna line (e.g., ANT+ or ANT−); no polarity assignment required. |
| Pin 2 | Anode / Cathode (bidirectional) | Electrically symmetrical terminal; connects to GND reference plane; forms low-inductance return path for ESD current. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low RF capacitance | 0.35pF enables direct integration into 13.56 MHz NFC antenna loops without tuning recalibration. |
| Bidirectional ESD clamping | ±24V symmetric breakdown supports full-wave AC NFC signals without rectification or bias dependency. |
| High ESD endurance | Survives ≥1000 IEC 61000-4-2 Level 4 strikes - ensures long-term reliability in field-deployed portable electronics. |
| Low dynamic resistance | 0.16Ω minimizes voltage overshoot during 8/20 μs transients, protecting sensitive NFC controller I/O pins. |
Applications
| NFC Antenna Protection | RF Signal Line Protection |
|---|---|
Use Scenario: Protecting 13.56 MHz NFC antenna traces on smartphones and wearables from user-hand ESD events. IC Role / Device Role / Timing Role: Board-level ESD shunt placed between antenna feed point and NFC controller IC. Use Value: Prevents latch-up or damage to NFC transceiver while preserving antenna Q-factor and read range via 0.35pF capacitance. | Use Scenario: Guarding high-frequency analog signal paths such as FM radio antenna inputs in compact mobile devices. IC Role / Device Role / Timing Role: Low-capacitance transient suppressor on unbalanced RF input lines. Use Value: Maintains signal fidelity up to 100 MHz with <0.2 dB insertion loss; eliminates need for post-protection impedance matching. |
| Portable Device NFC Interface | Smart Card Reader Circuits |
Use Scenario: Securing contactless payment interface in POS terminals and mobile point-of-sale hardware. IC Role / Device Role / Timing Role: Primary ESD barrier on differential NFC coil connections (TX+/TX−, RX+/RX−). Use Value: Delivers ±16kV contact immunity without degrading near-field coupling efficiency or communication reliability. | Use Scenario: Protecting ISO/IEC 14443 Type A/B antenna interfaces in embedded smart card readers. IC Role / Device Role / Timing Role: Transient voltage suppressor on 13.56 MHz resonant tank connections. Use Value: Enables compliance with EN 61000-4-2 Level 4 while sustaining >95% of original antenna voltage transfer ratio. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD2E001DRYR | 0.8pF capacitance (2.3× higher), ±5.5V working voltage, 2-pin SOT-5X3 package (1.0 × 0.6 mm) | Not suitable for ±24V NFC resonator circuits; limited to low-voltage data lines like USB D+/D− | Select only if protecting sub-6V digital interfaces where capacitance tolerance >0.5pF is acceptable. |
| SMLJ24AHE3_A/H | 150pF capacitance, DO-214AC package (4.3 × 2.6 mm), unidirectional, 24V VWM | Too large and capacitive for RF/NFC use; suited for DC power rail protection only | Use only for non-RF 24V supply line protection; avoid in any signal path above 1 MHz. |
Compared with TPD2E001DRYR and SMLJ24AHE3_A/H, the RCLAMP2451Y.TFT uniquely combines ±24V operation, 0.35pF capacitance, and 0.6 × 0.3 mm footprint-making it the sole option qualified for direct placement on NFC antenna loops without compromising RF performance or board space.
Availability
RCLAMP2451Y.TFT is available at Aetrix Electronics and suitable for NFC antenna protection, portable RF front-end design, and smart card reader interface hardening requiring stable component supply, consistent parametric performance, and RoHS-compliant packaging.
Supply support for RCLAMP2451Y.TFT 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 semiconductor company specializing in high-performance analog and mixed-signal semiconductors for infrastructure, industrial, and consumer markets.
The RailClamp® product line was engineered specifically for ultra-low-capacitance, high-reliability ESD protection of high-speed RF and NFC interfaces in space-constrained portable electronics.
FAQ
What is the maximum operating frequency supported by RCLAMP2451Y.TFT without significant signal attenuation?
RCLAMP2451Y.TFT supports frequencies up to 1 GHz with <0.5 dB insertion loss, verified by S21 measurements. Its 0.35pF capacitance yields negligible reactance at 13.56 MHz (XC ≈ 34 kΩ), making it ideal for NFC and FM antenna applications. The RCLAMP2451Y.TFT maintains signal integrity far beyond typical NFC bandwidth requirements.
Is RCLAMP2451Y.TFT compatible with reflow soldering processes used for fine-pitch portable PCBs?
Yes, RCLAMP2451Y.TFT is qualified for standard Pb-free reflow profiles (JEDEC J-STD-020), including peak temperatures up to 260°C. Its SLP0603P2X3E package uses NiAu terminations compatible with SAC305 paste and has documented stencil aperture guidelines (0.220 × 0.320 mm) to ensure reliable solder joint formation. The RCLAMP2451Y.TFT's thermal performance aligns with high-volume mobile manufacturing.
Does RCLAMP2451Y.TFT require orientation-specific placement on the PCB?
No - RCLAMP2451Y.TFT is electrically symmetrical and bidirectional, with identical performance regardless of terminal orientation. The device has no polarity marking or functional distinction between pins, simplifying automated placement and eliminating orientation errors. This symmetry is explicitly confirmed in the RCLAMP2451Y.TFT ordering documentation and mechanical drawings.
How does RCLAMP2451Y.TFT perform under repeated ESD stress compared to standard TVS diodes?
RCLAMP2451Y.TFT sustains ≥1000 IEC 61000-4-2 Level 4 (±8kV contact) strikes without parameter shift or leakage increase, whereas conventional TVS diodes often degrade after <100 strikes. Its silicon-avalanche structure and low dynamic resistance (0.16Ω) prevent cumulative thermal damage. This endurance is validated in the RCLAMP2451Y.TFT datasheet and critical for consumer device field reliability.
Can RCLAMP2451Y.TFT be used to protect differential NFC pairs (e.g., TX+/TX−)?
Yes - RCLAMP2451Y.TFT is routinely deployed per-line on differential NFC interfaces. One RCLAMP2451Y.TFT protects each signal (TX+, TX−, RX+, RX−) to ground, preserving common-mode rejection and avoiding skew. Its matched capacitance and symmetrical clamping ensure balanced transient response. Application Figure 1 in the RCLAMP2451Y.TFT datasheet confirms this dual-line implementation.
RCLAMP2451Y.TFT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 2-XFDFN
- Series:
- RailClamp®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 24V (Max)
- Voltage - Breakdown (Min):
- 28V (Typ)
- Voltage - Clamping (Max) @ Ipp:
- 7V
- Current - Peak Pulse (10/1000µs):
- 3A (8/20µs)
- Power - Peak Pulse:
- 60W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 0.35pF @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SLP0603P2X3E
RCLAMP2451Y.TFT FAQ
1.How can I place an order for RCLAMP2451Y.TFT through Aetrix?
Please submit a Request for Quotation (RFQ) for RCLAMP2451Y.TFT 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 RCLAMP2451Y.TFT reliable?
The price and inventory of RCLAMP2451Y.TFT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RCLAMP2451Y.TFT is usually 5 days.
3.What payment methods are accepted for RCLAMP2451Y.TFT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RCLAMP2451Y.TFT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RCLAMP2451Y.TFT?
RCLAMP2451Y.TFT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RCLAMP2451Y.TFT 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 RCLAMP2451Y.TFT?
For technical support, including RCLAMP2451Y.TFT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RCLAMP2451Y.TFT requirements.
6.How does Aetrix verify that RCLAMP2451Y.TFT is sourced from the original manufacturer or authorized distributors?
All RCLAMP2451Y.TFT 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 RCLAMP2451Y.TFT meets industry standards.
7.What is the process for return or replacement of RCLAMP2451Y.TFT?
All RCLAMP2451Y.TFT units undergo pre-shipment inspection (PSI). If there is an issue with RCLAMP2451Y.TFT, 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 RCLAMP2451Y.TFT part is unused and in its original packaging.
Return procedure for RCLAMP2451Y.TFT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RCLAMP2451Y.TFT 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
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 …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
