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Semtech Corporation SDHD15K
- Part No.:
- SDHD15K
- Manufacturer:
- Semtech Corporation
- Category:
- Diode Arrays
- Package:
- Module
- Datasheet:
-
SDHD15K.pdf
- Description:
- DIODE ARRAY GP 15000V 600MA
- Quantity:
- Payment:
- Shipping:
Inventory:2,297
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Product details
Overview
SDHD15K from Semtech is a transient diverting suppressor designed for high-energy EOS protection of 22V-rated power or I/O lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 40A (8/20μs) peak pulse current handling, and a stable 27.5–28V clamping voltage across temperature and current range - deployed in USB Type-C PD input protection and industrial load switch front-end circuits.
For engineers reviewing the SDHD15K datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, DFN-6 package layout guidance, real-world clamping behavior vs. conventional TVS, and validated alternatives for 22V bus protection in USB PD, IoT, and industrial equipment designs.
Technical Context
The SDHD15K 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 threshold. Unlike standard TVS diodes, its clamping voltage remains nearly constant due to ultra-low dynamic resistance (20 mΩ) and decreasing RDS(on) under surge conditions.
It operates over –40°C to +125°C with <600 nA reverse leakage at 22V, 175 pF junction capacitance at 22V/1 MHz, and supports combination-wave surge testing per IEC 61000-4-5 (±1kV, RS = 42Ω) and EFT per IEC 61000-4-4 (±4kV).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22 V - matches nominal USB PD bus and industrial 24V rail systems without derating. |
| Clamping Voltage | 27.5–28 V at 40A (8/20μs) - stays within safe margin below typical 30V+ IC damage thresholds. |
| Peak Pulse Current | 40 A (8/20μs) - meets IEC 61000-4-5 Level 3 surge immunity for industrial environments. |
| ESD Withstand | ±30 kV contact & air (IEC 61000-4-2) - exceeds automotive and industrial ESD requirements. |
| Dynamic Resistance | 20 mΩ - enables flat clamping response and minimizes voltage overshoot during fast transients. |
| Junction Capacitance | 175 pF at 22V/1 MHz - low enough for DC power rails and medium-speed signal lines (e.g., CC/SBU). |
| Operating Temperature | –40°C to +125°C - supports extended-range industrial and automotive under-hood applications. |
Pinout & Package
SDHD15K is housed in a Pb-free, RoHS-compliant DFN-6 package measuring 1.6 mm × 1.6 mm × 0.55 mm with exposed thermal pad not required - all six terminals are functional: three GND pins (1–3) and three IN pins (4–6), requiring parallel connection for full 40A rating and minimal PCB trace inductance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return for surge current; all three must be connected to low-inductance ground plane via multiple vias. |
| 4, 5, 6 | IN | Protected line input - connects directly to VBus or data/power line; all three pins carry equal surge current share. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based transient diversion | Replaces traditional TVS with active shunt switching - eliminates linear VC = VBR + IPP×RDYN rise, enabling stable clamping across current and temperature. |
| Constant clamping voltage | 27.5–28 V maintained from 24A to 40A and –40°C to +125°C - ensures predictable protection margin for downstream 30V-rated controllers. |
| Low dynamic resistance | 20 mΩ measured between 1A–40A (8/20μs) - reduces voltage overshoot and improves energy dissipation efficiency vs. silicon avalanche devices. |
| High EFT immunity | ±4 kV per IEC 61000-4-4 (5/50 ns, 5 kHz & 100 kHz bursts) - protects against repetitive switching noise in motor drives and PLC I/O modules. |
| Small-footprint DFN-6 | 1.6 mm × 1.6 mm area - saves >50% board space vs. SO-8 or SOT-23 TVS solutions while supporting same surge rating. |
Applications
| USB Type-C Power Delivery Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting VBus lines in USB-C receptacles supporting up to 20V/5A PD negotiation, exposed to ESD events and lightning-induced surges. IC Role / Device Role / Timing Role: Primary front-end EOS suppressor placed immediately after connector, before PD controller and load switch. Use Value: Maintains 27.5–28 V clamping at 40A and 125°C - avoids overvoltage damage to USB PD controllers (e.g., TUSB73x, STUSB4500) where TVS clamping would exceed 35V. |
Use Scenario: Safeguarding enable and input pins of industrial-grade load switches (e.g., ON Semi NIS513x, TI TPS2594x) in remote meters and robotics. IC Role / Device Role / Timing Role: Surge shunt device placed at load switch VIN/EN node to clamp transients before internal FET gate oxide or control circuitry. Use Value: Limits clamping voltage below 30V - prevents gate-source overvoltage failure and ensures reliable operation under IEC 61000-4-5 ±1kV surges. |
| IoT Sensor Hub Power Rail Protection | Storage Device SATA/PCIe Power Line Protection |
|
Use Scenario: Securing 22V auxiliary rails powering cellular modems, GNSS receivers, and environmental sensors in outdoor IoT gateways. IC Role / Device Role / Timing Role: Single-device solution for DC power line protection, replacing multi-stage TVS + MOV approaches. Use Value: Delivers 40A surge capability in 1.6 mm² footprint - enables compact, sealed enclosures without thermal derating concerns across –40°C to +85°C operating range. |
Use Scenario: Protecting 22V auxiliary power inputs on NVMe SSDs and enterprise SATA backplanes subject to hot-plug transients and system-level ESD. IC Role / Device Role / Timing Role: Low-capacitance (175 pF), high-power suppressor on 22V VDDQ or VCCP rails adjacent to controller ICs. Use Value: Provides <600 nA leakage at 22V - avoids standby current penalty while maintaining robust 27.5 V clamping during PCIe hot-plug insertion events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P | Same die, identical specs - SDHD15K is Semtech's alternate marking for TDS2211P per official ordering documentation. | Identical use cases: USB PD, load switch, industrial 22V rail protection. | No design change required; SDHD15K and TDS2211P are functionally and physically interchangeable. |
| uClamp2411ZA | 24V working voltage, lower 20A IPP rating, higher 33V clamping, smaller 0.65 mm × 0.65 mm DFN-2 package. | Better suited for CC/SBU lines in USB-C; insufficient for 40A VBus protection. | Select uClamp2411ZA only for low-current, low-capacitance signal-line protection - not a replacement for SDHD15K on power rails. |
Compared with TDS2211P (identical part) and uClamp2411ZA (lower-power signal variant), SDHD15K delivers unique 40A surge handling and flat 27.5 V clamping essential for protecting 22V power domains - making it irreplaceable in USB PD VBus and industrial load switch applications where sustained energy absorption is critical.
Availability
SDHD15K is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, and IoT sensor hub power rails requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.
Supply support for SDHD15K 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 signal integrity applications.
The SDHD15K belongs to Semtech's Transient Diverting Suppressor (TDS) product line - engineered to replace conventional TVS diodes with FET-based active clamping for stable, temperature-invariant surge protection in demanding industrial and USB-C power systems.
FAQ
Is SDHD15K a direct replacement for TDS2211P?
Yes, SDHD15K is Semtech's alternate orderable marking for the exact same device as TDS2211P - sharing identical die, package, electrical specifications, pinout, and qualification data per Semtech's official ordering documentation and datasheet Rev 2.5. No PCB or schematic changes are needed when substituting SDHD15K for TDS2211P.
What is the maximum clamping voltage of SDHD15K at 40A surge current?
The SDHD15K clamps at 27.5–28 V under 40A (8/20μs) peak pulse current per IEC 61000-4-5 combination waveform testing with 2Ω source impedance - confirmed in the "Electrical Characteristics" table of the TDS2211P datasheet, which applies identically to SDHD15K.
Does SDHD15K require a thermal pad on the PCB?
No, SDHD15K does not require a thermal pad. Its DFN-6 package dissipates surge energy through the copper traces and ground plane connections; the datasheet explicitly states "no thermal pad is needed" and recommends connecting all GND pins (1–3) to a low-inductance ground plane using multiple vias instead.
Can SDHD15K protect USB-C CC and SBU lines?
SDHD15K is over-specified for CC/SBU line protection due to its 40A rating and 175 pF capacitance - those lines typically require sub-0.5 pF devices like uClamp2411ZA. SDHD15K is intended for VBus or high-current power/data lines where its 22V working voltage and robust surge handling are essential.
What is the junction capacitance of SDHD15K at 22V bias?
The SDHD15K exhibits 175 pF junction capacitance at VR = 22V and f = 1 MHz, as specified in the "Electrical Characteristics" table of the TDS2211P datasheet - a value optimized for DC power rail and medium-speed interface protection without compromising signal integrity.
SDHD15K Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- Module
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Diode Configuration:
- 1 Pair Series Connection
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 15000 V
- Current - Average Rectified (Io) (per Diode):
- 600mA
- Voltage - Forward (Vf) (Max) @ If:
- 21 V @ 250 mA
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 10 µA @ 15000 V
- Operating Temperature - Junction:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- -
SDHD15K FAQ
1.How can I place an order for SDHD15K through Aetrix?
Please submit a Request for Quotation (RFQ) for SDHD15K 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 SDHD15K reliable?
The price and inventory of SDHD15K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SDHD15K is usually 5 days.
3.What payment methods are accepted for SDHD15K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SDHD15K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SDHD15K?
SDHD15K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SDHD15K 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 SDHD15K?
For technical support, including SDHD15K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SDHD15K requirements.
6.How does Aetrix verify that SDHD15K is sourced from the original manufacturer or authorized distributors?
All SDHD15K 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 SDHD15K meets industry standards.
7.What is the process for return or replacement of SDHD15K?
All SDHD15K units undergo pre-shipment inspection (PSI). If there is an issue with SDHD15K, 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 SDHD15K part is unused and in its original packaging.
Return procedure for SDHD15K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SDHD15K Tags
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BAV99-7-F
Diodes Incorporated
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BAT54C-7-F
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BAV99,215
Nexperia USA Inc.
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BAT54SLT1G
onsemi
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BAV70LT1G
onsemi
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BAT54CLT1G
onsemi
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BAT54S-7-F
Diodes Incorporated
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BAV99LT1G
onsemi
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BAT54S,215
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BAS40-04LT1G
onsemi
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MMBD1503-TP
Micro Commercial Co
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BAV99WT1G
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