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Semtech Corporation TDS4501P.C
- Part No.:
- TDS4501P.C
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 6-UFDFN
- Datasheet:
-
TDS4501P.C.pdf
- Description:
- SURGESWITCH, 1-LINE 45V EOS PROT
- Quantity:
- Payment:
- Shipping:
Inventory:1,971
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Product details
Overview
TDS4501P.C from Semtech is a Transient Diverting Suppressor designed for high-energy EOS protection on single 45V-rated power or I/O lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), and stable 47.5V clamping voltage across temperature and current range - deployed in USB PD, industrial load switch inputs, and IoT device bus protection.
For engineers reviewing the TDS4501P.C datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, DFN-6 package layout guidance, functional role in shunt-based surge suppression, and validated alternatives for 45V bus protection where low dynamic resistance (<20 mΩ) and temperature-stable clamping are critical.
Technical Context
The TDS4501P.C uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that senses overvoltage events and rapidly turns on the shunt path. Unlike conventional TVS diodes, its clamping voltage remains nearly constant due to decreasing RDS(on) under surge conditions.
It operates across –40°C to +125°C with 45V reverse stand-off voltage, 47.5V typical clamping at 40A (8/20μs), and 175pF junction capacitance at 45V bias - enabling robust protection of high-voltage USB PD 3.1+ and industrial 48V DC bus interfaces without signal integrity compromise.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 45V - supports nominal 48V DC systems and USB PD 3.1 Extended Power Range (EPR) bus protection. |
| Clamping Voltage | 47.5V at 40A (8/20μs) - ensures downstream 50V-rated ICs (e.g., load switches, PMICs) remain below absolute max ratings during surge. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 (±1kV, 42Ω source) for industrial equipment and outdoor IoT gateways. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - eliminates need for secondary ESD stages in ruggedized Type-C connectors. |
| Dynamic Resistance | 20 mΩ - enables flat clamping curve; reduces voltage overshoot vs. TVS diodes whose VC rises linearly with IPP. |
| Junction Capacitance | 175 pF at 45V - compatible with medium-speed analog/power monitoring lines; not suitable for >100MHz data paths. |
Pinout & Package
Package: DFN 1.6 mm × 1.6 mm × 0.55 mm, 6-lead, RoHS-compliant, UL 94V-0 molding compound, lead-free finish, tape-and-reel (3,000 pcs/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return for surge current; all three pins must be connected to minimize inductance and maximize 40A capability. |
| 4, 5, 6 | IN | Protected line input; tied together to handle full surge energy across parallel bond wires - required for rated 40A performance. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies <±0.5V from 24A to 40A (8/20μs), eliminating derating needed for TVS diodes at elevated temperatures. |
| Surge-rated FET core | Replaces pn-junction avalanche; dissipates energy in channel rather than junction - improves reliability under repeated surges. |
| Low thermal drift | Clamping remains stable from –40°C to +125°C; no increase in VC with ambient temperature unlike standard TVS devices. |
| High-energy rating | 1120W peak pulse power (8/20μs) - supports long-duration transients in industrial 48V rail protection applications. |
Applications
| USB PD 3.1 EPR Bus Protection | Industrial 48V DC Input Protection |
|---|---|
Use Scenario: Protecting VBUS lines in USB Type-C ports supporting up to 48V/5A (240W) power delivery. IC Role / Device Role / Timing Role: Shunt-based transient suppressor placed between connector and load switch input. Use Value: Maintains 47.5V clamping at full 40A surge, preventing damage to 50V-rated PD controllers and e-fuses under lightning-induced surges. |
Use Scenario: Safeguarding programmable logic controller (PLC) digital I/O modules powered from 48V industrial rails. IC Role / Device Role / Timing Role: Primary EOS protection stage at field-side connector entry point. Use Value: Survives repeated ±1kV/42Ω surges per IEC 61000-4-5 while holding clamp below 50V - avoids false trips and component stress. |
| IoT Gateway Power Input | Robotics Motor Drive Enable Line |
Use Scenario: Securing external 48V DC input on cellular/Wi-Fi-enabled edge gateways deployed outdoors. IC Role / Device Role / Timing Role: Front-end surge protector before DC-DC converter input stage. Use Value: 175pF capacitance avoids filtering interference on 48V sense lines; ±30kV ESD rating prevents latch-up during field servicing. |
Use Scenario: Protecting enable/control signals routed to high-current motor drivers in collaborative robots. IC Role / Device Role / Timing Role: Transient suppressor on 45V-rated gate driver enable input. Use Value: Prevents false triggering or latch-up caused by inductive kickback from nearby motor phases during commutation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P.C | 22V working voltage, 27.5V clamping at 40A | Optimized for 24V systems (USB Type-C, notebooks) | Select when protecting ≤24V buses where lower clamping voltage is mandatory for 28V-rated ICs. |
| SP1003-040 | 40V working voltage, 65V clamping at 30A (8/20μs), 350pF capacitance | Higher capacitance limits use to low-speed power lines only | Choose if board space allows larger SOD-323 package and system tolerates higher clamping voltage. |
Compared with TDS2211P.C and SP1003-040, the TDS4501P.C uniquely balances 45V operating margin, 47.5V clamping, and 175pF capacitance in a 1.6×1.6mm DFN - making it the only option for compact, high-voltage USB PD EPR and industrial 48V designs requiring both low parasitic capacitance and sub-50V clamping.
Availability
TDS4501P.C is available at Aetrix Electronics and suitable for USB PD 3.1 EPR implementations, industrial 48V DC input protection, and robotics motor control enable-line safeguarding requiring stable component supply and long-term lifecycle support.
Supply support for TDS4501P.C 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 semiconductors for power management, protection, and sensing applications.
The TDS family was engineered specifically for high-energy EOS protection in next-generation power delivery and industrial interfaces - replacing legacy TVS diodes with FET-based clamping for stable voltage limiting across temperature and current extremes.
FAQ
What is the maximum continuous operating voltage for TDS4501P.C?
The TDS4501P.C has a reverse stand-off voltage (VRWM) of 45V, meaning it can continuously block up to 45V DC without entering conduction. This makes it suitable for 48V nominal systems where transient headroom is required, and aligns with USB PD 3.1 Extended Power Range specifications. The TDS4501P.C maintains leakage below 600 nA at 45V.
How does TDS4501P.C differ from standard TVS diodes in clamping behavior?
Unlike standard TVS diodes - whose clamping voltage rises linearly with peak pulse current (VC = VBR + IPP × RDYN) - the TDS4501P.C uses a triggered FET to achieve near-constant clamping. Its VC stays at ~47.5V from 24A to 40A (8/20μs), and shows minimal variation across –40°C to +125°C. This eliminates thermal derating and simplifies system-level surge margin analysis for the TDS4501P.C.
Can TDS4501P.C be used on high-speed data lines like USB SuperSpeed or PCIe?
No - the TDS4501P.C has 175pF junction capacitance at 45V bias, which would severely degrade signal integrity on high-speed differential pairs. It is intended exclusively for power rails, enable/control lines, and medium-speed analog monitoring paths. For USB SS or PCIe lanes, discrete low-capacitance TVS devices (<0.3pF) such as RClamp3371ZC must be used instead of the TDS4501P.C.
What PCB layout practices are required to achieve full 40A surge rating for TDS4501P.C?
To achieve the rated 40A (8/20μs) performance, all three GND pins (1–3) and all three IN pins (4–6) must be shorted together using wide, low-inductance copper traces. Ground connections require multiple vias to an internal ground plane, and the device must be placed within 5 mm of the protected connector. Splitting or routing individual pins separately will reduce effective surge current handling well below 40A for the TDS4501P.C.
Is TDS4501P.C compliant with automotive AEC-Q200 or industrial IEC 61000-6-2 standards?
The TDS4501P.C is specified for industrial operation (–40°C to +125°C) and meets IEC 61000-4-2 (ESD), -4-4 (EFT), and -4-5 (surge) requirements, but it is not AEC-Q200 qualified. Semtech does not list automotive qualification for the TDS4501P.C. For automotive applications, users must perform system-level validation per ISO 16750-2 and consult Semtech for qualified alternatives before deploying the TDS4501P.C.
TDS4501P.C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 6-UFDFN
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 45V (Max)
- Voltage - Breakdown (Min):
- 46V
- Voltage - Clamping (Max) @ Ipp:
- 56V
- Current - Peak Pulse (10/1000µs):
- 24A (8/20µs)
- Power - Peak Pulse:
- 1344W (1.344kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 90pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-DFN (1.6x1.6)
TDS4501P.C FAQ
1.How can I place an order for TDS4501P.C through Aetrix?
Please submit a Request for Quotation (RFQ) for TDS4501P.C 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 TDS4501P.C reliable?
The price and inventory of TDS4501P.C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDS4501P.C is usually 5 days.
3.What payment methods are accepted for TDS4501P.C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDS4501P.C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TDS4501P.C?
TDS4501P.C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TDS4501P.C 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 TDS4501P.C?
For technical support, including TDS4501P.C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDS4501P.C requirements.
6.How does Aetrix verify that TDS4501P.C is sourced from the original manufacturer or authorized distributors?
All TDS4501P.C 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 TDS4501P.C meets industry standards.
7.What is the process for return or replacement of TDS4501P.C?
All TDS4501P.C units undergo pre-shipment inspection (PSI). If there is an issue with TDS4501P.C, 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 TDS4501P.C part is unused and in its original packaging.
Return procedure for TDS4501P.C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TDS4501P.C Tags
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