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Semtech Corporation 1N5554
- Part No.:
- 1N5554
- Manufacturer:
- Semtech Corporation
- Category:
- Single Diodes
- Package:
- Axial
- Datasheet:
-
1N5554.pdf
- Description:
- DIODE GEN PURP 1KV 5A AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:6,545
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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 peak pulse current (8/20μs), 27.5–28V clamping voltage at 24–40A, and 20mΩ dynamic resistance - deployed in USB Type-C PD input protection and industrial load switch inputs.
For engineers reviewing the TDS2211P datasheet, pinout, applications, or equivalent options, key selection criteria include clamping stability across temperature and current, low dynamic resistance for flat VC response, DFN-6 footprint compatibility, and compliance with IEC 61000-4-2/4-4/4-5 surge standards.
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 FET when transient voltage exceeds the trigger threshold. 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, maintains ≤28V clamping from 24A to 40A (1.2/50μs + 8/20μs combo waveform, RS = 2Ω), and delivers 1120W peak pulse power while exhibiting only 175pF junction capacitance at 22V and 1MHz - enabling robust protection without signal integrity compromise.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC bus voltage it can protect without leakage or conduction. |
| Clamping Voltage | 27.5–28V at 24–40A - ensures protected ICs (e.g., USB PD controllers) remain below damage thresholds during surge events. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 industrial surge immunity requirements. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds standard ESD immunity for handheld and interface connectors. |
| Dynamic Resistance | 20mΩ - enables flat clamping behavior and minimizes voltage rise under increasing surge current. |
| Junction Capacitance | 175pF at 22V, 1MHz - low enough for 22V power rail protection without degrading signal edge rates. |
| Package | DFN 1.6 × 1.6 × 0.55 mm, 6-lead - supports high-density PCB layouts with minimal board area consumption. |
Pinout & Package
Package: DFN-6 (1.6 mm × 1.6 mm × 0.55 mm), Pb-free, RoHS-compliant, UL 94V-0 molding compound, tape-and-reel packaging (3,000 pcs/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return path for surge current; all three must be connected to maximize current handling and minimize parasitic inductance. |
| 4, 5, 6 | IN | Protected line input (e.g., VBUS in USB-C); parallel connection of all three pins ensures uniform current sharing and optimal surge dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| Constant clamping voltage vs. current | VC varies only 0.5V across full 24–40A rated range - eliminates design margin inflation needed with conventional TVS diodes. |
| Temperature-stable clamping | Clamping remains ≤28V from –40°C to +125°C - enables reliable protection in automotive and industrial ambient conditions. |
| FET-based surge switching | Shunt FET activation replaces avalanche breakdown - reduces thermal stress and improves long-term reliability under repeated surges. |
| Low dynamic resistance | 20mΩ measured between 1A–40A (8/20μs) - directly enables sub-28V clamping even at max surge current. |
| High EFT immunity | ±4kV per IEC 61000-4-4 (5/50ns, 100kHz/5kHz) - protects against fast repetitive transients in motor drives and PLC environments. |
Applications
| USB Type-C Power Delivery Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting 20–22V VBUS lines in USB-C receptacles supporting up to 100W PD negotiation. IC Role / Device Role / Timing Role: Transient diverting suppressor placed between connector and PD controller or load switch input. Use Value: Maintains clamping ≤28V across temperature and current - prevents overvoltage damage to PD controllers rated for <30V absolute max. |
Use Scenario: Shielding e-fuse or load switch inputs (e.g., HS2950P) in remote meters, robotics, and factory automation equipment. IC Role / Device Role / Timing Role: Primary front-end surge clamp on VIN rail before integrated protection ICs. Use Value: Limits voltage seen by internal FETs to <28V during lightning-induced surges - avoids gate oxide rupture and latch-up failure. |
| IoT Device Power Rail Protection | Storage Device 22V Bus Protection |
|
Use Scenario: Securing 22V auxiliary rails in battery-backed smart sensors and edge gateways exposed to field ESD. IC Role / Device Role / Timing Role: Single-device solution for EOS/ESD/EFT on always-on power inputs. Use Value: Delivers ±30kV ESD, ±4kV EFT, and 40A surge immunity in 1.6×1.6mm footprint - eliminates need for multi-component protection stacks. |
Use Scenario: Safeguarding 22V backup or auxiliary supplies in NVMe SSD enclosures and enterprise storage controllers. IC Role / Device Role / Timing Role: High-energy clamping device on non-data power rails adjacent to high-speed interfaces. Use Value: 175pF capacitance avoids resonance with power delivery networks - preserves rail stability during transient suppression. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SP1003-02HTG | 22V working voltage, 30A IPP (8/20μs), 33V clamping at 24A, SOD-323 package | Higher clamping voltage (33V vs. 28V) limits use with 30V-tolerant ICs; smaller footprint but lower surge rating | Preferred where board space is critical and 33V clamping is acceptable; not suitable for tight-margin 22V PD designs. |
| SM712-02HTG | 12V/24V dual-rail, 40A IPP, 30V clamping at 24A, SOT-23-6 package | Designed for RS-485/RS-232 bidirectional protection; asymmetric breakdown unsuitable for unidirectional 22V bus | Applicable only in differential or dual-rail contexts; requires redesign for single-rail 22V use. |
Compared with SP1003-02HTG and SM712-02HTG, the TDS2211P uniquely delivers 28V clamping at full 40A while maintaining stability across –40°C to +125°C - making it the only option qualified for high-reliability 22V USB PD and industrial load switch protection without derating.
Availability
TDS2211P is available at Aetrix Electronics and suitable for USB Type-C PD systems, industrial load switch inputs, and IoT device power rail protection requiring stable component supply, full traceability, and lifecycle continuity 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 high-performance analog and mixed-signal ICs for power management, protection, sensing, and connectivity.
The TDS2211P belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-energy EOS applications demanding flat clamping, temperature stability, and FET-level reliability.
FAQ
What is the clamping voltage behavior of the TDS2211P across its full operating temperature range?
The TDS2211P maintains a clamping voltage of 27.5–28V from –40°C to +125°C at both 24A and 40A peak pulse current (1.2/50μs + 8/20μs combo waveform). This stability results from its FET-based architecture, where RDS(on) decreases under surge, counteracting thermal drift - unlike conventional TVS diodes whose clamping rises with temperature. This makes the TDS2211P especially suitable for automotive under-hood and industrial control cabinet deployments.
Can the TDS2211P be used to protect bidirectional data lines such as USB DP/DM or RS-485?
No, the TDS2211P is a unidirectional transient suppressor optimized for 22V power or I/O lines with defined polarity (IN to GND). Its functional diagram and electrical specifications - including forward voltage (0.5V) and reverse breakdown (25–27.9V) - confirm asymmetrical operation. For bidirectional data lines, Semtech recommends low-capacitance devices like RClamp3371ZC (for USB SS lanes) or uClamp2411ZA (for CC/SBU), not the TDS2211P.
How does the TDS2211P achieve lower clamping voltage than standard TVS diodes at high surge currents?
The TDS2211P uses a precision-triggered shunt FET instead of an avalanche PN junction. When triggered, the FET enters a low-RDS(on) state (<20mΩ), causing clamping voltage to converge near the trigger circuit's reference voltage (~27V) rather than rising linearly as in TVS diodes (VC = VBR + IPP × RDYN). This architecture yields ≤28V clamping even at 40A - ~10V lower than typical 22V TVS devices at the same current.
Is the TDS2211P compatible with lead-free reflow soldering processes?
Yes, the TDS2211P is fully compatible with standard lead-free reflow profiles (J-STD-020 compliant), featuring a Pb-free, halogen-free, RoHS/WEEE-compliant construction and UL 94V-0 molding compound. Its maximum peak temperature rating of +260°C aligns with IPC/JEDEC J-STD-020D.4 requirements, and the DFN-6 package has been validated for void-free solder joint formation using recommended land patterns.
What layout practices are required to achieve the rated 40A surge performance of the TDS2211P?
To achieve full 40A (8/20μs) capability, all three IN pins (4, 5, 6) and all three GND pins (1, 2, 3) must be connected with low-inductance traces - ideally using multiple vias to an inner ground plane. The device must be placed within 5 mm of the protected connector, and the IN-to-GND trace length minimized. Splitting connections or omitting any pin reduces effective surge current handling and may cause localized overheating or premature failure of the TDS2211P.
1N5554 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):
- 1000 V
- Current - Average Rectified (Io):
- 5A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 3 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 2 µs
- Current - Reverse Leakage @ Vr:
- 1 µA @ 1000 V
- Capacitance @ Vr, F:
- 92pF @ 5V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
- Operating Temperature - Junction:
- -
1N5554 FAQ
1.How can I place an order for 1N5554 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5554 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 1N5554 reliable?
The price and inventory of 1N5554 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5554 is usually 5 days.
3.What payment methods are accepted for 1N5554?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5554 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5554?
1N5554 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5554 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 1N5554?
For technical support, including 1N5554 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5554 requirements.
6.How does Aetrix verify that 1N5554 is sourced from the original manufacturer or authorized distributors?
All 1N5554 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 1N5554 meets industry standards.
7.What is the process for return or replacement of 1N5554?
All 1N5554 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5554, 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 1N5554 part is unused and in its original packaging.
Return procedure for 1N5554:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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