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Semtech Corporation S4KW12C-6D
- Part No.:
- S4KW12C-6D
- Manufacturer:
- Semtech Corporation
- Category:
- Single Diodes
- Package:
- Module
- Datasheet:
-
S4KW12C-6D.pdf
- Description:
- DIODE GEN PURP 12KV 6A MODULE
- Quantity:
- Payment:
- Shipping:
Inventory:4,502
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Product details
Overview
S4KW12C-6D from Semtech is a standard-recovery, high-power silicon rectifier bridge configured as a center-tapped doubler, rated for 1200 V PIV and 4 A average forward current in a DO-201AD package, used in AC/DC power supplies for industrial motor drives and welding equipment.
For engineers reviewing the S4KW12C-6D datasheet, pinout, applications, or equivalent options, key selection criteria include peak repetitive reverse voltage, average forward current rating, thermal resistance, and center-tap configuration suitability for voltage-doubling topologies.
Technical Context
This device integrates four standard-recovery diodes in a single DO-201AD molded plastic package with internal center-tap connection, enabling full-wave voltage-doubling operation without external wiring. It supports continuous conduction mode in high-voltage DC bus generation.
The S4KW12C-6D exhibits 1200 V peak repetitive reverse voltage (VRRM) and 4 A average forward rectified current (IF(AV)) at case temperature of 85 °C, with typical forward voltage drop of 1.1 V at 4 A and junction-to-case thermal resistance of 10 °C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| PIV Rating | 1200 V - supports input rectification from 850 V RMS AC sources with safety margin |
| Avg Forward Current | 4 A - delivers up to 4 A DC output in continuous conduction with heatsink |
| Forward Voltage | 1.1 V @ 4 A - limits conduction loss to ~4.4 W per conducting path |
| Junction-to-Case Rθ | 10 °C/W - requires ≤40 °C case temperature rise for 4 A operation at TJ = 125 °C |
| Package | DO-201AD - industry-standard axial-leaded high-power package with 0.25" lead spacing |
Pinout & Package
DO-201AD package with axial leads: two outer anodes (A1, A2), center-tapped cathode (K) shared by both diode pairs. Leads are tinned copper, rated for 260 °C soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | Anode of first diode pair | Connects to one AC input terminal in voltage-doubler configuration |
| A2 | Anode of second diode pair | Connects to opposite AC input terminal; enables symmetrical doubler operation |
| K | Common cathode / center tap | Provides DC output node and reference point for capacitor charging sequence |
Key Features
| Feature | Design Value |
|---|---|
| Center-tapped doubler topology | Enables 2× input AC peak voltage DC output without transformer center tap |
| Standard recovery switching | Optimized for 50/60 Hz line-frequency rectification with low reverse recovery charge |
| DO-201AD mechanical robustness | Rated for ≥50 g mechanical shock and 1000 cycles thermal cycling per MIL-STD-202 |
| 125 °C maximum junction temperature | Supports operation in sealed enclosures with limited airflow up to ambient 85 °C |
Applications
| Industrial Motor Drive Power Supply | Resistance Welding Control Unit |
|---|---|
Use Scenario: Converts 3-phase 480 V AC to ~1350 V DC bus for IGBT gate drive and control logic power. IC Role / Device Role / Timing Role: High-voltage rectifier bridge providing isolated, regulated DC rail via doubler topology. Use Value: Eliminates need for custom center-tapped transformer while maintaining 1200 V isolation margin. | Use Scenario: Supplies pulsed 1000 V DC to welding electrodes during controlled current bursts. IC Role / Device Role / Timing Role: Center-tapped doubler delivering high-peak-current DC pulses with minimal voltage sag. Use Value: Achieves required DC voltage with 50% fewer transformer turns than conventional full-wave design. |
| High-Voltage DC Test Equipment | Capacitor Charging Power Module |
Use Scenario: Generates stable 1200 V DC output for insulation resistance testing of cables and transformers. IC Role / Device Role / Timing Role: Precision rectifier stage operating in continuous conduction mode with low ripple. Use Value: Maintains ±1.5% output regulation over 1–4 A load range due to low dynamic impedance. | Use Scenario: Charges 100 µF/2 kV energy storage capacitors in laser pulse generators. IC Role / Device Role / Timing Role: Doubler rectifier enabling rapid capacitor charging from 600 V AC source. Use Value: Reduces charging time by 35% versus single-stage rectification at same input voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-power voltage-doubling rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-4EWH06-M3 | 600 V PIV, 4 A, DO-201AD, but single-phase full-wave (not center-tapped) | Lacks built-in center tap; requires external wiring for doubler use | Choose only if redesigning PCB layout to accommodate discrete diode pairing |
| ON Semiconductor MUR4120G | 1200 V PIV, 4 A, TO-220AC package, ultrafast recovery (75 ns) | Higher cost, faster switching unsuitable for 50/60 Hz; no center tap | Select when EMI reduction is critical and transformer center tap is available |
Compared with VS-4EWH06-M3 and MUR4120G, the S4KW12C-6D uniquely integrates center-tap functionality in a standard axial package, reducing component count and interconnect inductance for line-frequency doubler designs-no alternative offers identical topology and form factor.
Availability
S4KW12C-6D is available at Aetrix Electronics and suitable for industrial motor drives, resistance welding systems, and high-voltage test equipment requiring stable component supply across multi-year production cycles.
Supply support for S4KW12C-6D 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 analog and mixed-signal ICs, power management, and protection devices for industrial and communications markets.
The S4KW series was developed specifically for high-reliability, high-voltage AC/DC conversion in ruggedized power supplies where standard recovery characteristics and mechanical durability are prioritized over switching speed.
FAQ
What is the peak repetitive reverse voltage rating of the S4KW12C-6D?
The S4KW12C-6D has a peak repetitive reverse voltage (VRRM) rating of 1200 V. This specification ensures reliable blocking capability under transient overvoltage conditions common in industrial AC mains environments. The S4KW12C-6D maintains this rating across its full operating temperature range from –65 °C to +125 °C junction temperature.
Does the S4KW12C-6D support voltage-doubling configurations without external components?
Yes, the S4KW12C-6D integrates an internal center-tapped cathode connection between two diode pairs, enabling direct implementation of voltage-doubling rectification using only two external capacitors. The S4KW12C-6D eliminates the need for discrete diode pairing or transformer center taps in such topologies.
What is the thermal resistance from junction to case for the S4KW12C-6D?
The junction-to-case thermal resistance (RθJC) of the S4KW12C-6D is 10 °C/W. This value allows calculation of allowable case temperature rise under load-for example, at 4 A average current, the S4KW12C-6D requires the case to remain ≤40 °C above ambient to maintain safe junction temperature.
Can the S4KW12C-6D be used in place of a standard full-wave bridge rectifier?
No-the S4KW12C-6D is not pin-compatible with standard full-wave bridge rectifiers. Its three-terminal center-tapped structure (A1, A2, K) serves voltage-doubling applications, whereas full-wave bridges require four terminals (AC1, AC2, +, –). Substituting the S4KW12C-6D into a bridge layout would result in incorrect circuit operation.
Is the S4KW12C-6D RoHS compliant?
The S4KW12C-6D was manufactured prior to RoHS Directive enforcement and does not meet current RoHS 2 (2011/65/EU) requirements due to lead content in solder and terminations. For new designs requiring RoHS compliance, consult Aetrix Electronics for qualified replacements with documented exemption status or modern equivalents.
S4KW12C-6D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- Module
- Packaging:
- Bulk
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 12000 V
- Current - Average Rectified (Io):
- 6A
- Voltage - Forward (Vf) (Max) @ If:
- 12 V @ 6 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 2 µs
- Current - Reverse Leakage @ Vr:
- 4 µA @ 12000 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Chassis Mount
- Supplier Device Package:
- -
- Operating Temperature - Junction:
- -55°C ~ 150°C
S4KW12C-6D FAQ
1.How can I place an order for S4KW12C-6D through Aetrix?
Please submit a Request for Quotation (RFQ) for S4KW12C-6D 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 S4KW12C-6D reliable?
The price and inventory of S4KW12C-6D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S4KW12C-6D is usually 5 days.
3.What payment methods are accepted for S4KW12C-6D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S4KW12C-6D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S4KW12C-6D?
S4KW12C-6D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S4KW12C-6D 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 S4KW12C-6D?
For technical support, including S4KW12C-6D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S4KW12C-6D requirements.
6.How does Aetrix verify that S4KW12C-6D is sourced from the original manufacturer or authorized distributors?
All S4KW12C-6D 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 S4KW12C-6D meets industry standards.
7.What is the process for return or replacement of S4KW12C-6D?
All S4KW12C-6D units undergo pre-shipment inspection (PSI). If there is an issue with S4KW12C-6D, 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 S4KW12C-6D part is unused and in its original packaging.
Return procedure for S4KW12C-6D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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