My Inquiry
My Account
Taiwan Semiconductor Corporation SK515C
- Part No.:
- SK515C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SK515C.pdf
- Description:
- DIODE SCHOTTKY 150V 5A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,066
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SK515C from Taiwan Semiconductor is a 5A, 150V Schottky barrier surface-mount rectifier in DO-214AB (SMC) package, optimized for high-efficiency switching power supplies with low forward voltage (0.95 V at 5 A, 25°C) and low reverse leakage (0.3 mA at 150 V, 25°C). It delivers high surge current capability (120 A, 8.3 ms), thermal robustness (TJ up to 150°C), and meets RoHS/halogen-free requirements.
For engineers reviewing the SK515C datasheet, SK515C pinout, SK515C application, or SK515C equivalent, key selection considerations include its 150 V VRRM, 0.95 V forward drop at rated current, junction-to-lead thermal resistance of 13°C/W, and compatibility with automated SMT placement on standard PCB pads.
Technical Context
The SK515C is a single-die Schottky rectifier designed for unidirectional DC output rectification in high-frequency switching topologies. Its 150 V peak reverse voltage rating and 10,000 V/µs dV/dt capability support operation in fast-switching converters where voltage transients are present.
Thermal performance is defined by RθJL = 13°C/W and RθJA = 53°C/W (on 16 mm × 16 mm Cu pad), enabling reliable 5 A continuous conduction without forced cooling. The device features a cathode band polarity indicator and moisture sensitivity level 1 per J-STD-020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 150 V - Maximum repetitive reverse voltage; defines safe blocking capability in 12–48 V output SMPS secondary-side rectification |
| IF | 5 A - Continuous forward current rating; supports typical 60–100 W adapter and lighting converter outputs |
| VF @ 5 A, 25°C | 0.95 V - Low conduction loss; reduces power dissipation to ≤4.75 W at full load, easing thermal design |
| IR @ 150 V, 25°C | 0.3 mA - Low leakage ensures minimal standby power loss in energy-efficient designs |
| IFSM | 120 A - Surge withstand for 8.3 ms half-sine; handles inrush and transient overloads without failure |
| TJ max | 150°C - Enables operation in enclosed, thermally constrained industrial and lighting environments |
| RθJL | 13°C/W - Efficient heat transfer to PCB copper; allows direct thermal coupling to ground plane for passive cooling |
Pinout & Package
Package: DO-214AB (SMC), surface-mount plastic case with matte tin-plated leads, cathode indicated by molded band. Weight: 0.210 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input terminal for forward conduction | Connected to transformer secondary or switch node; must handle full 5 A RMS current and 120 A surge |
| Cathode | Output terminal for forward conduction | Connected to output capacitor and load; polarity marked by visible band; carries full DC output current |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Enhances voltage standoff margin and prevents premature edge breakdown under high dV/dt stress |
| Moisture sensitivity level 1 | Eliminates bake requirement prior to reflow; compatible with standard J-STD-020 assembly processes |
| RoHS and halogen-free compliance | Meets global environmental regulations and enables use in consumer, industrial, and lighting products |
| High IFSM/IF ratio (24×) | Provides robustness against line surges and startup inrush without derating or external fusing |
Applications
| LED Driver Power Supply | USB-C PD Adapter Secondary Rectifier |
|---|---|
Use Scenario: Constant-current LED driver operating from 24–48 V DC input with high-frequency flyback topology. IC Role / Device Role / Timing Role: Output rectifier converting high-frequency AC from transformer secondary into regulated DC for LED string. Use Value: 0.95 V VF minimizes conduction loss at 5 A, improving efficiency >92% and reducing heatsink size. |
Use Scenario: 60 W USB-C Power Delivery adapter with synchronous rectification disabled or cost-optimized design. IC Role / Device Role / Timing Role: Primary-side synchronous rectifier replacement in secondary-side rectification stage. Use Value: 150 V VRRM safely accommodates reflected voltage spikes in 20 V output designs with margin. |
| Industrial DC-DC Converter | Smart Home Lighting Ballast |
Use Scenario: 48 V input, 12 V output isolated DC-DC module for factory automation controllers. IC Role / Device Role / Timing Role: Secondary-side freewheeling rectifier in forward or flyback converter. Use Value: RθJL = 13°C/W enables stable 5 A operation on standard 2 oz copper without thermal vias. |
Use Scenario: Dimmable smart LED bulb with integrated AC-DC conversion and PWM dimming circuitry. IC Role / Device Role / Timing Role: Output rectifier in compact, thermally limited flyback supply. Use Value: Moisture level 1 and halogen-free construction meet stringent safety and environmental requirements for residential use. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-50WQ15 | Same 150 V VRRM, 5 A IF, but VF = 0.82 V @ 5 A (25°C); slightly lower thermal resistance (RθJA = 45°C/W) | Better efficiency at light loads; tighter VF distribution across batch | Preferred when <0.1% efficiency gain justifies higher unit cost and dual-source qualification |
| ON Semiconductor SB5150 | 150 V VRRM, 5 A IF, VF = 0.92 V @ 5 A (25°C); same DO-214AB package; IR = 0.5 mA @ 150 V (25°C) | Higher leakage may impact standby power in ultra-low-power lighting | Suitable for cost-sensitive adapters where 0.3 vs. 0.5 mA IR difference is acceptable |
Compared with VS-50WQ15 and SB5150, the SK515C offers a balanced trade-off: lower leakage than SB5150 and proven reliability in high-volume lighting applications, while maintaining competitive cost versus Vishay's tighter-spec alternative.
Availability
SK515C is available at Aetrix Electronics and suitable for switching mode power supplies, LED drivers, and USB-C PD adapters requiring stable component supply, long-term manufacturability, and RoHS-compliant sourcing.
Supply support for SK515C 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, specializing in power rectifiers, TVS diodes, and MOSFETs for industrial and consumer markets.
The SK5xC series was developed specifically for high-efficiency, cost-optimized secondary-side rectification in compact AC-DC and DC-DC converters, emphasizing thermal robustness, SMT compatibility, and environmental compliance.
FAQ
What is the maximum junction temperature rating for the SK515C?
The SK515C has a maximum junction temperature (TJ) rating of +150°C, verified per absolute maximum ratings table. This allows continuous operation in thermally demanding environments such as enclosed LED luminaires or industrial DC-DC modules. Derating curves in the SK515C datasheet confirm 5 A operation is sustainable up to 125°C ambient when mounted on a 16 mm × 16 mm copper pad.
Does the SK515C have a specified reverse recovery time (trr)?
No - the SK515C is a Schottky barrier rectifier and exhibits no minority-carrier storage; therefore, it has no defined reverse recovery time. Its operation relies on majority-carrier conduction, resulting in near-zero switching loss and immunity to recovery-related EMI. This behavior is inherent to all devices in the SK5xC family and confirmed in TSC's electrical specifications.
Is the SK515C suitable for use in automotive applications?
The SK515C is not qualified to AEC-Q101 and is not recommended for automotive powertrain or safety-critical systems. While its 150°C TJ max and robust surge rating align with some under-hood ambient conditions, TSC explicitly states these devices are not designed for medical, life-saving, or life-sustaining applications - a category that includes automotive ADAS and engine control.
What is the cathode marking method on the SK515C package?
The SK515C uses a molded cathode band on the DO-214AB (SMC) package body to indicate polarity. This band is located adjacent to the cathode lead and is clearly visible under standard optical inspection. The marking diagram in the SK515C datasheet confirms the band position relative to the "SK515C" part code and date code.
How does the SK515C compare to the SK520C in terms of forward voltage and leakage?
The SK515C and SK520C share identical forward voltage (0.95 V @ 5 A, 25°C) and reverse leakage (0.3 mA @ rated VRRM, 25°C) specifications. Their key difference lies in peak reverse voltage: SK515C is rated at 150 V, while SK520C is rated at 200 V. Both use the same die process and package, making them pin-identical drop-in replacements where voltage margin permits.
SK515C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AB, SMC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 150 V
- Current - Average Rectified (Io):
- 5A
- Voltage - Forward (Vf) (Max) @ If:
- 950 mV @ 5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 300 µA @ 150 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
- Operating Temperature - Junction:
- -55°C ~ 150°C
SK515C FAQ
1.How can I place an order for SK515C through Aetrix?
Please submit a Request for Quotation (RFQ) for SK515C 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 SK515C reliable?
The price and inventory of SK515C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK515C is usually 5 days.
3.What payment methods are accepted for SK515C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK515C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SK515C?
SK515C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SK515C 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 SK515C?
For technical support, including SK515C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK515C requirements.
6.How does Aetrix verify that SK515C is sourced from the original manufacturer or authorized distributors?
All SK515C 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 SK515C meets industry standards.
7.What is the process for return or replacement of SK515C?
All SK515C units undergo pre-shipment inspection (PSI). If there is an issue with SK515C, 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 SK515C part is unused and in its original packaging.
Return procedure for SK515C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SK515C Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
