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Semtech Corporation SCH25000
- Part No.:
- SCH25000
- Manufacturer:
- Semtech Corporation
- Category:
- Single Diodes
- Package:
- Axial
- Datasheet:
-
SCH25000.pdf
- Description:
- DIODE GP 25KV 500MA AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:7,795
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Product details
Overview
TDS2211P from Semtech is a transient diverting suppressor designed for high-energy EOS protection of 22V-rated I/O or power lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 40A (8/20μs) peak pulse current handling, and stable 27.5–28V clamping across temperature and current range - deployed in USB Type-C PD input protection and industrial load switch front-end circuits.
For engineers reviewing the TDS2211P datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, DFN-6 package layout guidance, clamping stability data across -40°C to +125°C, and direct alternatives for 22V bus protection where low dynamic resistance (<20mΩ) and constant clamping are critical.
Technical Context
The TDS2211P uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that turns on the shunt path when transient voltage exceeds breakdown. Unlike conventional TVS diodes, its clamping voltage remains nearly constant due to decreasing RDS(on) under surge conditions.
It operates with reverse stand-off voltage of 22V, breakdown at 25–27.9V (It = 1mA), and exhibits only 175pF junction capacitance at 22V/1MHz - enabling use on high-speed 22V power rails without signal integrity degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V reverse stand-off - matches nominal USB PD bus and industrial 24V rail systems without derating. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs + 1.2/50μs combo waveform) - stays within safe margin below typical 30V load switch FET VDS(max). |
| Peak Pulse Current | 40A (8/20μs) - satisfies IEC 61000-4-5 Level 4 surge immunity for industrial equipment and USB PD endpoints. |
| ESD Withstand | ±30kV contact & air per IEC 61000-4-2 - exceeds automotive and industrial ESD robustness requirements. |
| Dynamic Resistance | 20mΩ (measured 1–40A, 8/20μs) - enables flat clamping curve and minimizes voltage overshoot during fast transients. |
| Junction Capacitance | 175pF at 22V/1MHz - low enough for DC power line protection without affecting downstream regulator stability. |
| Operating Temperature | -40°C to +125°C - supports extended-range operation in industrial and automotive under-hood environments. |
Pinout & Package
Package: DFN 1.6mm × 1.6mm × 0.55mm, 6-lead, Pb-free, RoHS-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 line input - tied together to handle full 40A surge; requires direct routing from connector to minimize trace inductance. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based shunt architecture | Enables <20mΩ dynamic resistance and flat clamping vs. current - eliminates voltage rise seen in standard TVS diodes. |
| Constant clamping over temperature | 27.5–28V clamping maintained from -40°C to +125°C - ensures predictable protection in thermal-critical applications. |
| Low leakage & high EFT immunity | 600nA max IR at 22V and ±4kV IEC 61000-4-4 - prevents false triggering and supports long-term reliability in noisy industrial settings. |
| Space-efficient DFN package | 1.6mm × 1.6mm footprint - saves >50% board area vs. SO-8 or SOT-23 TVS solutions rated for comparable surge energy. |
| Integrated trigger circuit | Precisely tuned to activate near 25–27.9V breakdown - avoids premature conduction while ensuring rapid response to EOS events. |
Applications
| USB Type-C Power Delivery Input Protection | Industrial Load Switch Front-End Protection |
|---|---|
Use Scenario: Protecting 20–22V USB PD bus against lightning-induced surges and connector ESD during hot-plug events. IC Role / Device Role / Timing Role: Transient diverting suppressor placed between Type-C receptacle VBUS and upstream load switch or PD controller. Use Value: Maintains 27.5–28V clamping at 40A - stays well below 30V damage threshold of common PD controllers and e-fuses. |
Use Scenario: Safeguarding input of industrial-grade load switches (e.g., HS2950P) exposed to 1kV/42Ω surges in remote meters or robotics. IC Role / Device Role / Timing Role: Primary EOS shunt device limiting voltage stress on internal FET gate oxide and drain-source junction. Use Value: Prevents latch-up or permanent failure by clamping below VDS(max) even at 125°C ambient - validated per IEC 61000-4-5. |
| IoT Device Power Rail Protection | Storage Device 22V Backup Supply Protection |
Use Scenario: Securing 22V auxiliary power inputs in battery-backed IoT gateways subjected to ESD and conducted surges in field deployments. IC Role / Device Role / Timing Role: Standalone transient suppressor on main DC input rail, upstream of buck converter and system MCU. Use Value: Delivers ±30kV ESD immunity and 40A surge capability in 1.6mm² footprint - enables compact, ruggedized enclosure design. |
Use Scenario: Protecting 22V backup supply lines feeding NVMe SSDs or enterprise SATA drives during power sequencing and hot-swap events. IC Role / Device Role / Timing Role: High-energy clamping device placed at drive backplane connector to prevent transient coupling into sensitive storage controllers. Use Value: 175pF capacitance avoids resonance with PCB trace inductance - preserves signal integrity on shared power domains. |
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; 35.1V clamping at 24.7A (8/20μs); higher dynamic resistance (~0.5Ω); 100pF capacitance. | Limited to lower-energy surges; clamping rises with temperature and current - unsuitable for 40A or high-temp industrial use. | Use only where cost is primary constraint and 40A/125°C performance is not required. |
| SP1003-220 | 3-terminal TVS array; 22V working voltage; 27V clamping at 12A; 25pF per line; rated for 12A (8/20μs). | Designed for multi-line data protection (e.g., USB DP/DM); insufficient single-line surge rating for 22V power rail applications. | Select only for differential signal lines - not a functional replacement for TDS2211P's 40A power-line capability. |
Compared with SMAJ22A and SP1003-220, the TDS2211P uniquely delivers 40A surge handling with flat 27.5–28V clamping across temperature - making it the only option among the three suitable for protecting 22V power rails in USB PD, industrial load switches, and high-reliability IoT systems.
Availability
TDS2211P is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, and 22V IoT power rail protection requiring stable component supply, full traceability, 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 fabless semiconductor company specializing in analog and mixed-signal ICs for precision sensing, protection, and signal integrity.
The TDS2211P belongs to Semtech's Transient Diverting Suppressor (TDS) product line - engineered specifically to replace conventional TVS diodes in high-energy, high-temperature 22V power rail protection applications.
FAQ
What is the maximum clamping voltage of the TDS2211P at 40A surge current?
The TDS2211P clamps at 27.6–28V under 40A (8/20μs + 1.2/50μs combination waveform, RS = 2Ω), as specified in the Electrical Characteristics table. This value remains stable across -40°C to +125°C operating temperature - a key differentiator from standard TVS diodes whose clamping rises with current and temperature. The TDS2211P achieves this via its low-RDS(on) FET architecture.
Can the TDS2211P be used to protect USB Type-C CC lines?
No - the TDS2211P is designed for 22V power-line protection (e.g., VBUS) and is not suitable for CC or SBU lines, which require low-capacitance, low-voltage TVS devices like uClamp2411ZA. Its 175pF junction capacitance and 22V working voltage make it inappropriate for differential signaling lines where sub-1pF loading is mandatory. The TDS2211P should only be applied to high-voltage DC rails.
Does the TDS2211P require a thermal pad on the PCB?
No - the TDS2211P does not require a thermal pad. Per Semtech's datasheet, energy is dissipated internally during transient events, and no external thermal management is needed. Instead, layout emphasis is on low-inductance grounding: all three GND pins (1, 2, 3) must connect directly to a solid ground plane using multiple vias, and the IN pins (4, 5, 6) must be routed as a single low-inductance path from the protected connector. The TDS2211P relies on package-level thermal mass, not board-level heatsinking.
How does the TDS2211P compare to standard TVS diodes in terms of temperature stability?
The TDS2211P maintains consistent 27.5–28V clamping from -40°C to +125°C, whereas standard TVS diodes exhibit rising clamping voltage with temperature due to increasing dynamic resistance. For example, a typical 22V TVS may clamp at ~38V at 125°C and 24A - exceeding safe margins for many 30V-rated components. The TDS2211P's FET-based architecture eliminates this drift, making it the preferred choice for thermally demanding applications like industrial motor drives and automotive under-hood modules.
Is the TDS2211P pin-compatible with other Semtech TDS devices?
No - the TDS2211P is not pin-compatible with other TDS family members such as TDS2401P or TDS3301P. Each variant uses a unique pin configuration optimized for its voltage rating and current capability. The TDS2211P uses a 6-pin DFN with grouped IN (pins 4–6) and GND (pins 1–3) terminals, while higher-current variants may use different lead counts or layouts. Always verify pin mapping using the specific device's datasheet - the TDS2211P must be laid out per its dedicated land pattern and routing guidelines.
SCH25000 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):
- 25000 V
- Current - Average Rectified (Io):
- 500mA
- Voltage - Forward (Vf) (Max) @ If:
- 25 V @ 1 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 5 µs
- Current - Reverse Leakage @ Vr:
- 1 µA @ 25000 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- -
- Operating Temperature - Junction:
- -55°C ~ 150°C
SCH25000 FAQ
1.How can I place an order for SCH25000 through Aetrix?
Please submit a Request for Quotation (RFQ) for SCH25000 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 SCH25000 reliable?
The price and inventory of SCH25000 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SCH25000 is usually 5 days.
3.What payment methods are accepted for SCH25000?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SCH25000 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SCH25000?
SCH25000 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SCH25000 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 SCH25000?
For technical support, including SCH25000 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SCH25000 requirements.
6.How does Aetrix verify that SCH25000 is sourced from the original manufacturer or authorized distributors?
All SCH25000 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 SCH25000 meets industry standards.
7.What is the process for return or replacement of SCH25000?
All SCH25000 units undergo pre-shipment inspection (PSI). If there is an issue with SCH25000, 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 SCH25000 part is unused and in its original packaging.
Return procedure for SCH25000:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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