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Taiwan Semiconductor Corporation S15KC R7G
- Part No.:
- S15KC R7G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
S15KC R7G.pdf
- Description:
- DIODE GEN PURP 800V 15A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,076
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Product details
Overview
S15KC R7G from Taiwan Semiconductor is a 15A, 800V surface-mount silicon rectifier diode in DO-214AB (SMC) package, featuring 1.1V max forward voltage at 15A, 350A peak surge capability, and 150°C maximum junction temperature - used as freewheeling diode in high-efficiency switching mode power supplies for telecom infrastructure.
For engineers reviewing the S15KC R7G datasheet, S15KC R7G pinout, S15KC R7G application, or S15KC R7G equivalent, key selection criteria include repetitive peak reverse voltage (800V), thermal resistance (8°C/W junction-to-lead), moisture sensitivity level (J-STD-020 Level 1), RoHS/halogen-free compliance, and tape-and-reel packaging (3,000 pcs).
Technical Context
This single-die, glass-passivated standard recovery rectifier operates with low conduction loss and high thermal robustness. Its 8°C/W junction-to-lead thermal resistance enables direct PCB heat transfer, while the 350A IFSM rating supports transient energy handling in flyback and boost converter snubber circuits.
The device exhibits 1µA max reverse leakage at 25°C and 250µA at 125°C under rated VRRM, with 93pF junction capacitance at 1MHz/4V - characteristics optimized for mid-frequency (≤100kHz) switching applications where EMI control and reverse recovery trade-offs are managed via external circuit design.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - blocks up to 800V repetitive reverse voltage without breakdown in freewheeling or output rectification paths |
| IF | 15 A - continuous average forward current rating at case temperature ≤75°C, defining steady-state power handling |
| IFSM | 350 A - withstands single 8.3ms half-sine surge, enabling robust startup and fault-current tolerance |
| VF (max) | 1.1 V @ 15A, 25°C - limits conduction loss to ≤16.5W per diode in high-current DC paths |
| RθJL | 8 °C/W - allows efficient heat transfer from junction to PCB copper, supporting compact thermal layout |
| MSL | Level 1 (J-STD-020) - no floor life limitation or bake requirement before reflow soldering |
| CJ | 93 pF @ 1MHz, 4V - influences high-frequency switching node ringing and EMI filter sizing |
Pinout & Package
DO-214AB (SMC) surface-mount package with cathode band marking; matte tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Forward current entry point | Connected to switch node or transformer secondary center-tap in bridge/freewheeling configurations |
| Cathode (banded end) | Forward current exit / reverse blocking terminal | Connected to output rail or ground return; polarity must match PCB silkscreen and schematic symbol |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Prevents moisture-induced degradation and ensures long-term reliability in humid industrial environments |
| Low VF (1.1V max) | Reduces power dissipation by ~15% vs. comparable 15A rectifiers with VF ≥1.25V, improving system efficiency |
| High IFSM (350A) | Eliminates need for parallel diodes in 12–48V telecom PSUs subject to load dump or inrush transients |
| RoHS + halogen-free | Meets IEC 61249-2-21 and EU Directive 2011/65/EU, enabling compliance in export-bound equipment |
| Automated placement compatible | DO-214AB footprint and lead geometry support high-yield pick-and-place at >25,000 CPH |
Applications
| Telecom AC-DC Front-End | Industrial Motor Drive Snubber |
|---|---|
Use Scenario: Rectifying 380VAC input in 1kW telecom rectifier modules operating continuously at 60°C ambient. IC Role / Device Role / Timing Role: Output rectifier in full-wave bridge configuration, conducting during positive half-cycles of secondary winding voltage. Use Value: 800V VRRM provides 2× safety margin over 380VAC × √2 ≈ 537V peak, while 15A IF sustains full-load current with <1.5°C/W effective thermal resistance on 2oz copper. | Use Scenario: Freewheeling path for IGBTs in 3-phase VFDs controlling 7.5kW induction motors. IC Role / Device Role / Timing Role: Clamps inductive kickback energy during IGBT turn-off, routing current back to DC bus. Use Value: 350A IFSM handles motor stall surges without derating; 8°C/W RθJL enables direct mounting to heatsinked PCB layers. |
| Server PSU Secondary Side | Renewable Energy Inverter DC Link |
Use Scenario: Synchronous rectification replacement in 48V/60A server VRMs where cost and thermal density constrain MOSFET use. IC Role / Device Role / Timing Role: Uncontrolled rectifier in center-tapped transformer secondary, providing unidirectional current to bulk capacitor. Use Value: 1.1V VF yields lower conduction loss than Schottky alternatives above 100V, avoiding thermal runaway at 60A aggregate current. | Use Scenario: DC link protection in 5kW solar string inverters exposed to outdoor temperature cycling (-25°C to +85°C). IC Role / Device Role / Timing Role: Reverse-polarity protection and DC bus clamping diode across PV array inputs. Use Value: -55°C to +150°C TJ range ensures operation across desert and arctic deployments; MSL Level 1 simplifies manufacturing logistics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1508D | 800V VRRM, 15A IF, but 1.75V VF (max) at 15A - 59% higher conduction loss | Higher thermal stress in compact enclosures; requires larger heatsinking | Select when legacy STMicro design reuse is prioritized over efficiency |
| VS-15EWH08-M3 | 800V VRRM, 15A IF, VF = 1.05V (typ), but only 200A IFSM - 43% lower surge rating | Not suitable for motor drive snubbers with high dI/dt transients | Select when ultra-low VF is critical and surge events are absent or externally clamped |
Compared with STTH1508D and VS-15EWH08-M3, the S15KC R7G delivers optimal balance of low VF (1.1V max), high IFSM (350A), and industry-standard DO-214AB footprint - making it preferred for telecom and industrial power where both efficiency and ruggedness are non-negotiable.
Availability
S15KC R7G is available at Aetrix Electronics and suitable for telecom AC-DC front-ends, industrial motor drive snubbers, and server PSU secondary-side rectification requiring stable component supply and J-STD-020 Level 1 moisture handling.
Supply support for S15KC R7G 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global power electronics and industrial markets since 1979.
The S15GC–S15MC series was designed specifically for high-current, medium-voltage surface-mount rectification in space-constrained switching power supplies - emphasizing thermal performance, surge resilience, and automated assembly compatibility.
FAQ
What is the maximum junction temperature rating for the S15KC R7G?
The S15KC R7G has a maximum junction temperature (TJ) rating of +150°C, verified per absolute maximum ratings table in the official Taiwan Semiconductor datasheet Version C2102. This allows reliable operation in high-ambient environments such as enclosed telecom rectifiers or industrial motor drives. Derating curves confirm usable current capacity down to 0A at 150°C case temperature. Thermal design must maintain TJ ≤150°C using the specified RθJL = 8°C/W.
Does the S15KC R7G have a RoHS and halogen-free certification?
Yes, the S15KC R7G is RoHS compliant and halogen-free per IEC 61249-2-21, as explicitly stated in the "Features" section of the Taiwan Semiconductor datasheet. The molding compound is UL 94V-0 rated, and terminals are matte tin-plated to meet J-STD-002 solderability requirements. These certifications are validated for the DO-214AB package variant shipped under ordering code S15KC R7G.
What does the 'R7G' suffix indicate in S15KC R7G?
The 'R7G' suffix in S15KC R7G denotes tape-and-reel packaging (R7) and green compound (G), per Taiwan Semiconductor's ordering nomenclature in the "Ordering Information" section. 'R7' specifies 3,000 pieces per reel; 'G' confirms halogen-free, RoHS-compliant epoxy. This matches the DO-214AB (SMC) package and distinguishes it from bulk or ammo-pack variants.
Is the S15KC R7G suitable for use in synchronous rectification topologies?
No, the S15KC R7G is a standard recovery rectifier diode, not a synchronous rectifier. It lacks gate control, body diode optimization, or fast recovery characteristics required for active switching in SR topologies. Its 93pF junction capacitance and unspecified reverse recovery time make it unsuitable for >100kHz operation. Use only in conventional hard-switched or quasi-resonant converters where diode conduction is unidirectional and non-controlled.
How is polarity marked on the S15KC R7G package?
Polarity on the S15KC R7G is indicated by a visible cathode band printed on the molded body of the DO-214AB (SMC) package - consistent with the "Marking Diagram" in the Taiwan Semiconductor datasheet. The banded end is the cathode; the opposite end is the anode. This marking aligns with IPC-7351 standards and must be matched to PCB silkscreen and schematic symbol orientation during layout and assembly.
S15KC R7G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AB, SMC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 800 V
- Current - Average Rectified (Io):
- 15A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 15 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1 µA @ 800 V
- Capacitance @ Vr, F:
- 93pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
- Operating Temperature - Junction:
- -55°C ~ 150°C
S15KC R7G FAQ
1.How can I place an order for S15KC R7G through Aetrix?
Please submit a Request for Quotation (RFQ) for S15KC R7G 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 S15KC R7G reliable?
The price and inventory of S15KC R7G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S15KC R7G is usually 5 days.
3.What payment methods are accepted for S15KC R7G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S15KC R7G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S15KC R7G?
S15KC R7G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S15KC R7G 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 S15KC R7G?
For technical support, including S15KC R7G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S15KC R7G requirements.
6.How does Aetrix verify that S15KC R7G is sourced from the original manufacturer or authorized distributors?
All S15KC R7G 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 S15KC R7G meets industry standards.
7.What is the process for return or replacement of S15KC R7G?
All S15KC R7G units undergo pre-shipment inspection (PSI). If there is an issue with S15KC R7G, 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 S15KC R7G part is unused and in its original packaging.
Return procedure for S15KC R7G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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