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Semtech Corporation SCHS5000
- Part No.:
- SCHS5000
- Manufacturer:
- Semtech Corporation
- Category:
- Single Diodes
- Package:
- Axial
- Datasheet:
-
SCHS5000.pdf
- Description:
- DIODE GEN PURP 5KV 2A AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:6,784
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Product details
Overview
TDS2211P from Semtech is a transient diverting suppressor designed to protect single 22V I/O or power lines against high-energy EOS events, featuring ±30kV IEC 61000-4-2 ESD immunity, 40A (8/20μs) peak pulse current handling, and stable 27.5–28V clamping voltage across temperature and current range-used in USB Type-C PD bus protection.
For engineers reviewing the TDS2211P datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage stability over temperature, dynamic resistance ≤20 mΩ, junction capacitance of 175 pF at 22V, DFN 1.6×1.6mm 6-lead package constraints, and compatibility with industrial surge standards (±1kV, RS=42Ω).
Technical Context
The TDS2211P uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit when transient voltage exceeds breakdown threshold-enabling near-constant clamping voltage independent of peak pulse current magnitude. Its operation avoids the linear VC = VBR + IPP × RDYN behavior typical of conventional TVS diodes.
Clamping remains stable from –40°C to +125°C due to low RDS(on) reduction under surge, delivering 27.5–28V at both 24A and 40A (1.2/50μs voltage + 8/20μs current combination waveform, RS = 2Ω), with dynamic resistance guaranteed at 20 mΩ (measured 1–40A, 8/20μs).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22 V - defines maximum continuous DC operating voltage on protected line without leakage or conduction. |
| Clamping Voltage | 27.5–28 V at 40A (8/20μs + 1.2/50μs combo wave, RS = 2Ω) - ensures downstream ICs (e.g., USB PD controllers) remain below damage threshold during surge. |
| Peak Pulse Current | 40 A (tp = 8/20μs) - meets IEC 61000-4-5 Level 4 industrial surge immunity requirements for 22V systems. |
| ESD Withstand | ±30 kV contact & air per IEC 61000-4-2 - exceeds standard ESD immunity requirements for consumer and industrial interfaces. |
| Junction Capacitance | 175 pF at VR = 22 V, f = 1 MHz - low enough for 22V power rail protection without signal integrity impact on adjacent traces. |
| Dynamic Resistance | 20 mΩ - enables flat clamping response across full 1–40A surge range, minimizing voltage rise with increasing current. |
| Reverse Leakage | 600 nA max at 22 V - negligible power loss and thermal load in standby operation. |
Pinout & Package
Package: DFN 1.6 mm × 1.6 mm × 0.55 mm, 6-lead, Pb-free, RoHS/WEEE compliant, UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return path for surge current; all three pins must be connected to maximize current sharing and minimize parasitic inductance. |
| 4, 5, 6 | IN | Protected input terminal for 22V bus or I/O line; parallel connection of all three pins ensures full 40A rating and uniform current distribution. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based transient shunt architecture | Enables constant clamping voltage across 1–40A and –40°C to +125°C, unlike voltage-dependent TVS diodes. |
| Low dynamic resistance (20 mΩ) | Minimizes voltage overshoot during fast-rising surges and supports robust energy diversion without thermal runaway. |
| High EFT immunity (±4 kV, 5/50 ns) | Protects against repetitive burst noise in industrial environments (IEC 61000-4-4), critical for remote meters and PLCs. |
| Small-footprint DFN package | 1.6 × 1.6 mm area saves >50% board space vs. comparable SO-8 or SOT-23 TVS solutions while maintaining 40A rating. |
| Stable clamping at elevated temperature | Clamping voltage remains ~27.6 V at 125°C (vs. >38 V for typical 22V TVS), enabling reliable protection in thermally constrained designs. |
Applications
| USB Type-C Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting 20–22V VBUS lines in USB-C PD ports against lightning-induced surges and connector hot-plug ESD. IC Role / Device Role / Timing Role: Primary EOS shunt protector placed between connector and PD controller or load switch input. Use Value: Maintains clamping at ≤28 V across full temperature range, preventing damage to sensitive PD controllers rated for <30 V absolute max. |
Use Scenario: Safeguarding input terminals of industrial-grade load switches (e.g., HS2950P) in remote meters and robotics. IC Role / Device Role / Timing Role: Front-end transient clamp that limits voltage stress on internal FET gate oxide during 1.2/50μs surges. Use Value: Prevents premature failure of load switch due to overvoltage-induced gate rupture, extending field reliability in ungrounded installations. |
| IoT Edge Node Power Rail Protection | Storage Device 22V Backup Power Line |
|
Use Scenario: Securing 22V auxiliary rails in battery-backed IoT gateways exposed to ESD during field servicing or lightning-coupled transients. IC Role / Device Role / Timing Role: Standalone transient suppressor on main power input, upstream of DC-DC converters and PMICs. Use Value: 40A surge rating and ±30kV ESD withstand ensure uninterrupted operation in harsh deployment environments (e.g., smart city infrastructure). |
Use Scenario: Protecting 22V backup power inputs in enterprise SSDs and NVMe storage modules during hot-swap events or system-level surges. IC Role / Device Role / Timing Role: Low-capacitance (175 pF), low-leakage (≤600 nA) clamp on non-data-critical power rail. Use Value: Prevents latch-up or overvoltage damage to backup power management ICs without adding signal distortion or standby drain. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22A | Standard unidirectional TVS diode; clamping rises to ~42 V at 40A (8/20μs); higher dynamic resistance (~0.5 Ω); no temperature-stable clamping. | Used where cost is prioritized over clamping precision; unsuitable for 22V systems requiring tight voltage margin (e.g., USB PD). | Select SMAJ22A only if design tolerates >35 V clamping and operates below 85°C ambient. |
| SP1003-220 | Bi-directional TVS array; 22 V working voltage; clamps at ~36 V @ 40A; 150 pF capacitance; lacks FET-based flat-clamp behavior. | Preferred for differential data-line protection (e.g., RS-485), not optimized for high-current single-rail power protection. | Choose SP1003-220 for multi-line or bidirectional signal protection; avoid for 22V power rail where clamping stability is critical. |
Compared with SMAJ22A and SP1003-220, the TDS2211P delivers uniquely stable 27.5–28 V clamping across full current and temperature range-enabling safer margin design for 22V PD controllers and industrial load switches where voltage excursions above 30 V cause irreversible damage.
Availability
TDS2211P is available at Aetrix Electronics and suitable for USB Type-C PD implementations, industrial load switch protection, and IoT edge node power rail hardening requiring stable component supply and long-term lifecycle support.
Supply support for TDS2211P 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 power management, protection, and signal integrity applications.
The TDS series was developed to replace conventional TVS diodes in high-reliability 22V+ power rail protection, emphasizing flat clamping, thermal stability, and compact packaging for next-generation USB, industrial, and storage systems.
FAQ
What is the maximum continuous operating voltage for TDS2211P?
The TDS2211P has a reverse stand-off voltage (VRWM) of 22 V, meaning it can continuously block up to 22 V DC without significant leakage or conduction. This makes it suitable for protecting 22V nominal power rails such as USB PD VBUS lines. Exceeding this voltage risks sustained conduction and potential device failure. The TDS2211P is not rated for continuous operation above 22 V.
How does TDS2211P achieve stable clamping voltage across temperature?
The TDS2211P achieves stable clamping via a surge-rated FET shunt architecture rather than a pn-junction diode. When triggered, the FET's RDS(on) drops to ~20 mΩ, making clamping voltage dependent primarily on the trigger circuit's breakdown voltage-not current or temperature. As shown in the datasheet, clamping remains ~27.6 V at both –40°C and +125°C, unlike TVS diodes whose VC increases with temperature. This behavior is confirmed in Figure 3 and Table 2 of the TDS2211P datasheet.
Can TDS2211P be used to protect USB SuperSpeed differential pairs?
No, the TDS2211P is not suitable for USB SuperSpeed (SS) TX/RX differential pair protection. Its 175 pF junction capacitance would severely degrade signal integrity at 5+ Gbps data rates. For SS lines, Semtech recommends low-capacitance devices like RClamp3371ZC (<0.25 pF). The TDS2211P is intended exclusively for single-ended 22V power or control line protection, such as VBUS, CC, or load switch inputs-not high-speed data paths.
What is the recommended PCB layout for optimal surge performance of TDS2211P?
For optimal surge performance, place the TDS2211P as close as possible to the protected connector. Connect all three IN pins (4, 5, 6) via a single short, wide trace to the protected line, and tie all three GND pins (1, 2, 3) directly to a solid ground plane using multiple vias. Avoid stubs or splits in ground connections. Per Figure 7 of the datasheet, this minimizes parasitic inductance and ensures full 40A current sharing across all pins-critical for meeting IEC 61000-4-5 surge requirements.
Does TDS2211P require a thermal pad or heatsink for 40A surge handling?
No, the TDS2211P does not require a thermal pad or external heatsink. Its FET-based architecture dissipates surge energy efficiently during the short-duration 8/20μs event (typically <100 ns conduction time), and the DFN package is rated for the resulting transient power (1120 W peak). The datasheet explicitly states "no thermal pad is needed" (page 6), and thermal derating is unnecessary for single-event surge compliance. Continuous power dissipation is not applicable-the device is not intended for steady-state operation.
SCHS5000 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- Axial
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 5000 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 5.75 V @ 3 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 2.5 µs
- Current - Reverse Leakage @ Vr:
- 1 µA @ 5000 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
- Operating Temperature - Junction:
- -55°C ~ 150°C
SCHS5000 FAQ
1.How can I place an order for SCHS5000 through Aetrix?
Please submit a Request for Quotation (RFQ) for SCHS5000 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 SCHS5000 reliable?
The price and inventory of SCHS5000 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SCHS5000 is usually 5 days.
3.What payment methods are accepted for SCHS5000?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SCHS5000 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SCHS5000?
SCHS5000 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SCHS5000 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 SCHS5000?
For technical support, including SCHS5000 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SCHS5000 requirements.
6.How does Aetrix verify that SCHS5000 is sourced from the original manufacturer or authorized distributors?
All SCHS5000 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 SCHS5000 meets industry standards.
7.What is the process for return or replacement of SCHS5000?
All SCHS5000 units undergo pre-shipment inspection (PSI). If there is an issue with SCHS5000, 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 SCHS5000 part is unused and in its original packaging.
Return procedure for SCHS5000:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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