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DK100R05ST
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Shenzhen DongKe Semicon DC-DC Converters, TO-220F-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownDK100R05ST
Shenzhen DongKe Semicon · DC-DC Converters · TO-220F-3
DK100R05ST from Shenzhen DongKe Semicon, in a TO-220F-3. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | NC | unconnected | Not connected (floating) pin. |
| 2 | K | passive | Cathode: connects in the application like the cathode of a diode, and is the reference for the NMOS turn-on voltage (VON = -220 mV typ.) with 100V maximum NMOS drain-source breakdown. |
| 3 | A | passive | Anode: connects in the application like the anode of a diode, and is the reference point for the datasheet's supply voltage thresholds (VCC_ON 7.2 V, VCC_OFF 3.3 V, VOVP 10 V). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Shenzhen DongKe Semicon |
| Package | TO-220F-3 |
| Category | Power Supply Chip |
| Pins | 3 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| NMOS drain-source breakdown voltage | V(BR)DSS | 100 | V | 3 | |||
| NMOS max continuous current | IDSCDC | 60 | A | 3 | |||
| NMOS max peak current | IDSPDC | 200 | A | 3 | |||
| Power dissipation TO220 | PDMAX | 33 | W | 3 | |||
| Storage temperature range | TSTG | -55 | 155 | °C | 3 | ||
| Junction operating temperature range | TJ | -40 | 150 | °C | 3 | ||
| Soldering temperature | 260 | °C | 5 s | 3 | |||
| Thermal resistance junction to ambient | RθJA | 62.5 | ℃/W | 3 | |||
| Thermal resistance junction to case | RθJC | 3.8 | ℃/W | 3 | |||
| Chip start-up voltage | VCC_ON | 7.2 | V | TA = 25℃, referenced to A | 3 | ||
| Undervoltage protection threshold | VCC_OFF | 3.3 | V | TA = 25℃, referenced to A | 3 | ||
| Overvoltage protection threshold | VOVP | 10 | V | TA = 25℃, referenced to A | 3 | ||
| NMOS turn-on voltage | VON | -220 | mV | K pin as reference | 3 | ||
| NMOS turn-on delay | TDON | 150 | ns | 3 | |||
| NMOS turn-off delay | TDOFF | 50 | ns | 3 | |||
| NMOS max on-time | TON_MAX | 20 | μs | 3 | |||
| NMOS min on-time | TON_MIN | 200 | ns | 3 | |||
| NMOS min off-time | TOFF_MIN | 500 | ns | 3 | |||
| Dead time | TD | 400 | ns | auto-adjusted from K pin fluctuation | 3 | ||
| Max operating frequency | FS_MAX | 150 | KHz | 3 | |||
| NMOS on-resistance | RDS_ON | 5 | mΩ | 3 |
CAD (KiCad official)
- Symbol:
DK100R05ST - Footprint:
Package_TO_SOT_THT:TO-220F-3_Vertical - 3D model: TO-220F-3 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Shenzhen DongKe Semicon datasheet (7 pp, sha256
1928d7f03cb30a24, retrieved 2026-10-23, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).