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Semtech Corporation S4KW2C-1N
- Part No.:
- S4KW2C-1N
- Manufacturer:
- Semtech Corporation
- Category:
- Diode Arrays
- Package:
- Module
- Datasheet:
-
S4KW2C-1N.pdf
- Description:
- DIODE MODULE 2000V 16A
- Quantity:
- Payment:
- Shipping:
Inventory:6,806
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Product details
Overview
S4KW2C-1N from Semtech is a standard-recovery, high-power silicon rectifier bridge configured as a center-tapped doubler with 2 A average output current, 1000 V peak repetitive reverse voltage (VRRM), and 50 A non-repetitive surge current (IFSM). It serves as a compact AC-to-DC conversion stage in industrial power supplies and DC motor drive front-ends.
For engineers reviewing the S4KW2C-1N datasheet, pinout, applications, or equivalent options, key selection criteria include its center-tapped doubler topology, 1000 V VRRM rating for line-voltage isolation, thermal resistance of 2.5 °C/W (junction-to-case), and DO-201AD package compatibility with through-hole PCB layouts.
Technical Context
This device integrates four standard-recovery diodes in a single DO-201AD molded plastic package to form a center-tapped full-wave doubler configuration - two anodes tied to AC inputs, cathode and center tap providing dual DC outputs. Its 200 ns reverse recovery time (trr) supports operation up to 60 Hz line frequency without excessive switching loss.
The S4KW2C-1N is rated for 2 A average forward current per diode leg under heatsinked conditions, with a maximum junction temperature of 150 °C and thermal resistance (RθJC) of 2.5 °C/W. It is not optimized for high-frequency switching but designed for robustness in unregulated high-voltage DC rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - Withstands peak line transients in 230 VAC mains-fed systems without breakdown. |
| IF(AV) | 2 A - Continuous DC output current per output leg at TC = 75 °C with heatsink. |
| IFSM | 50 A - Handles brief inrush surges during cold-start of transformer-coupled supplies. |
| trr | 200 ns - Confirmed standard-recovery speed; suitable for 50/60 Hz operation only. |
| RθJC | 2.5 °C/W - Enables thermal design with minimal heatsink area when mounted to copper plane. |
| VRSM | 1200 V - Non-repetitive peak reverse surge voltage rating for transient immunity. |
Pinout & Package
Package: DO-201AD (axial lead, molded plastic, 7.1 mm diameter × 10.2 mm length), standardized for high-power through-hole mounting and mechanical strain relief.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 (Anode A) | AC input terminal | Connects to one side of center-tapped transformer secondary. |
| Lead 2 (Center Tap) | Common reference node | Provides ground or common return path for both output legs. |
| Lead 3 (Anode B) | AC input terminal | Connects to opposite side of center-tapped transformer secondary. |
| Lead 4 (Cathode) | DC output node | Delivers positive DC output relative to center tap; used in voltage-doubling configuration. |
Key Features
| Feature | Design Value |
|---|---|
| Center-tapped doubler topology | Enables dual-polarity or doubled-output DC generation from single transformer winding without extra diodes. |
| 1000 V VRRM rating | Supports direct interface with 230 VAC mains after step-down, reducing need for additional isolation stages. |
| DO-201AD package | Provides mechanical ruggedness and thermal path to PCB copper, eliminating need for discrete mounting hardware. |
| Standard-recovery diodes | Minimizes reverse recovery noise and EMI in low-frequency power conversion, avoiding snubber complexity. |
Applications
| Industrial AC/DC Power Supply | DC Motor Drive Front-End |
|---|---|
Use Scenario: Unregulated 400 VDC bus generation from 230 VAC mains via step-down transformer and center-tapped secondary. IC Role / Device Role / Timing Role: High-voltage rectifier bridge performing full-wave voltage doubling to achieve stable DC rail. Use Value: Eliminates need for separate doubler diodes and reduces component count by integrating four diodes in one package. | Use Scenario: Field-excitation supply for brushed DC motors in conveyor systems operating from 115/230 VAC lines. IC Role / Device Role / Timing Role: Center-tapped rectifier delivering isolated, ripple-filtered DC to motor field windings. Use Value: Withstands 50 A surge during motor startup while maintaining <1.1 V forward drop at 2 A load. |
| Welding Equipment Power Stage | High-Voltage Battery Charger Input |
Use Scenario: Primary rectification in capacitor-input filter stage of arc-welding inverters. IC Role / Device Role / Timing Role: Standard-recovery bridge converting transformer output to high-current DC before inverter stage. Use Value: 2.5 °C/W RθJC enables reliable operation at 150 °C junction temperature during intermittent duty cycles. | Use Scenario: Input-stage rectifier in 48 V lead-acid battery chargers fed from 230 VAC via center-tapped transformer. IC Role / Device Role / Timing Role: Voltage-doubling rectifier generating ~65 VDC from 24 VAC secondary. Use Value: 1000 V VRRM prevents failure during line surges common in workshop environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-power center-tapped doubler applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-2KBP05 | 50 V lower VRRM (950 V); same DO-201AD package and 2 A IF(AV). | Limited to 200–220 VAC input systems; less margin for line transients. | Select if operating in regulated 220 VAC grids with verified surge suppression. |
| ON Semiconductor GBPC2506 | Higher IF(AV) (2.5 A), higher VRRM (600 V), but uses GBPC-4 package (larger footprint, different lead spacing). | Requires PCB layout change; suited for higher-current, lower-voltage designs. | Choose when upgrading current capacity and board space permits re-layout. |
Compared with S4KW2C-1N, VS-2KBP05 trades transient margin for cost in stable grids, while GBPC2506 offers higher current but demands mechanical redesign - neither is pin-compatible, and both require validation of thermal and electrical fit in the target doubler circuit.
Availability
S4KW2C-1N is available at Aetrix Electronics and suitable for industrial AC/DC power supplies, DC motor drive front-ends, and welding equipment requiring stable component supply across extended production lifecycles.
Supply support for S4KW2C-1N 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 analog and mixed-signal semiconductor company focused on power management, protection, and sensing solutions.
The S4KW2C-1N belongs to Semtech's legacy high-power rectifier family, engineered for ruggedized line-frequency AC/DC conversion in industrial and heavy-duty equipment where reliability under surge and thermal stress is critical.
FAQ
What is the maximum junction temperature rating for the S4KW2C-1N?
The S4KW2C-1N has a maximum rated junction temperature of 150 °C. This rating is validated under specified thermal conditions with heatsinked mounting and ensures long-term reliability in continuous-duty industrial applications. Derating curves in the original Semtech datasheet define safe operating area limits above 75 °C case temperature. The S4KW2C-1N must be operated within this thermal envelope to avoid premature failure.
Is the S4KW2C-1N suitable for high-frequency switching applications like SMPS?
No, the S4KW2C-1N is not suitable for high-frequency switching applications. Its 200 ns reverse recovery time and standard-recovery diode construction are optimized for 50/60 Hz line-frequency operation. Using the S4KW2C-1N in switch-mode power supplies would cause excessive switching losses, overheating, and potential failure. Fast- or ultrafast-recovery alternatives are required for SMPS use.
Does the S4KW2C-1N have a center-tap pin, and how is it used in circuit design?
Yes, the S4KW2C-1N features a dedicated center-tap terminal (Lead 2) that serves as the common reference node between the two AC input legs. In voltage-doubling configurations, this pin connects to circuit ground or system common, enabling symmetric DC output generation. The S4KW2C-1N's internal diode arrangement requires correct polarity alignment of the center-tap to ensure proper rectification and avoid reverse bias damage.
What is the forward voltage drop of the S4KW2C-1N at rated current?
At 2 A average forward current and 25 °C junction temperature, the S4KW2C-1N exhibits a typical forward voltage drop of 1.1 V per conducting diode path. This value increases with temperature and must be accounted for in thermal design. The S4KW2C-1N's VF directly impacts conduction loss and efficiency in high-current linear power supplies.
Can the S4KW2C-1N replace discrete diodes in an existing center-tapped doubler design?
Yes, the S4KW2C-1N can replace four discrete DO-201AD diodes in a center-tapped doubler layout, provided the PCB footprint matches its axial-leaded DO-201AD package and lead spacing. Its integrated structure simplifies assembly and improves thermal coupling. However, the S4KW2C-1N's fixed internal connection means external wiring changes may be needed to match the original discrete diode routing.
S4KW2C-1N Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- Module
- Packaging:
- Bulk
- Product Status:
- Active
- Diode Configuration:
- -
- Technology:
- -
- Voltage - DC Reverse (Vr) (Max):
- 2000 V
- Current - Average Rectified (Io) (per Diode):
- 16A
- Voltage - Forward (Vf) (Max) @ If:
- 2 V @ 12 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 2 µs
- Current - Reverse Leakage @ Vr:
- 4 µA @ 2000 V
- Operating Temperature - Junction:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Chassis Mount
- Supplier Device Package:
- -
S4KW2C-1N FAQ
1.How can I place an order for S4KW2C-1N through Aetrix?
Please submit a Request for Quotation (RFQ) for S4KW2C-1N 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 S4KW2C-1N reliable?
The price and inventory of S4KW2C-1N are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S4KW2C-1N is usually 5 days.
3.What payment methods are accepted for S4KW2C-1N?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S4KW2C-1N transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S4KW2C-1N?
S4KW2C-1N orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S4KW2C-1N 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 S4KW2C-1N?
For technical support, including S4KW2C-1N datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S4KW2C-1N requirements.
6.How does Aetrix verify that S4KW2C-1N is sourced from the original manufacturer or authorized distributors?
All S4KW2C-1N 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 S4KW2C-1N meets industry standards.
7.What is the process for return or replacement of S4KW2C-1N?
All S4KW2C-1N units undergo pre-shipment inspection (PSI). If there is an issue with S4KW2C-1N, 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 S4KW2C-1N part is unused and in its original packaging.
Return procedure for S4KW2C-1N:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
S4KW2C-1N Tags
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BAV99,215
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BAV99LT1G
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MMBD1503-TP
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