4 layers65 × 30 mm
Overview
The DSK34 is a schottky Diode made by TWGMC in a SOD-123FL package with 2 pins. -55℃~+125℃ 3A 40V 500uA 520mV@3A 80A Independent SOD-123FL Schottky Diodes ROHS.
PCBKit's library has its KiCad symbol (Device:D_Schottky, from KiCad's library) and its footprint (Diode_SMD:D_SOD-123F, from KiCad's library), ready for a KiCad board. 491,155 are in stock at JLCPCB (part C727076). 20 open-source boards in 14 repositories on GitHub use it.
Symbol
Footprint
From the datasheet
5- Reverse voltage, most
- 40 V · maximum repetitive peak reverse voltage · p. 1
- Forward current, most
- 3 A · maximum average forward rectified current at TL, see fig.1 · p. 1
- Forward voltage
- 700 mV · maximum instantaneous forward voltage at 3.0 A · p. 1
- Junction, hottest
- 125 °C · maximum operating junction temperature · p. 1
- Junction to air (SOD-123FL)
- 80 K/W · typical junction-to-ambient thermal resistance · p. 1
What it is and has
4- Flammability classification
- 94V-0 · p. 1
- Junction
- Metal silicon junction, majority carrier conduction · p. 1
- Package
- SOD-123FL, plastic surface mounted package, 2 leads · p. 3
- Marking code
- K34 · p. 1
Specifications
12| Parameter | Conditions | As printed | Page |
|---|---|---|---|
| Maximum repetitive peak reverse voltage VRRM | DSK34; ratings at 25 C ambient temperature unless otherwise specified | max 40 V | 1 |
| Maximum RMS voltage VRMS | DSK34 | max 28 V | 1 |
| Maximum DC blocking voltage VDC | DSK34 | max 40 V | 1 |
| Maximum average forward rectified current I(AV) | DSK34; at TL (see fig.1); single phase half-wave 60Hz, resistive or inductive load; for capacitive load current derate by 20% | max 3 A | 1 |
| Peak forward surge current IFSM | DSK34; 8.3ms single half sine-wave superimposed onrated load (JEDEC Method) | max 80 A | 1 |
| Maximum instantaneous forward voltage at 3.0A VF | DSK34; forward current 3.0A | max 0.7 V | 1 |
| Maximum DCreverse current at rated DCblocking voltage IR | DSK34; TA=25℃ | max 0.5 mA | 1 |
| Maximum DCreverse current at rated DCblocking voltage IR | DSK34; TA=125℃ | max 20 mA | 1 |
| Typical junction capacitance (NOTE 1) CJ | DSK34; measured at 1MHz and applied reverse voltage of 4.0V D.C. | typ 250 pF | 1 |
| Typical thermal resistance (NOTE 2) RJA | DSK34; SOD-123FL | typ 80 ℃/W | 1 |
| Operating junction temperature range TJ | DSK34 | min -55 · max 125 ℃ | 1 |
| Storage temperature range TSTG | DSK34 | min -55 · max 150 ℃ | 1 |
Pins, by the datasheet
2- 1 Cathode
- Cathode; color band denotes cathode end. · p. 1
- 2 Anode
- Anode. · p. 1
Parameters
10- Current - Rectified
- 3A
- Diode Configuration
- Standalone
- Junction Temperature(Max)
- 125℃
- Non-Repetitive Peak Forward Surge Current
- 80A
- Operating Junction Temperature Range
- -55℃~+125℃
- Reverse Leakage Current (Ir)
- 500uA
- Thermal Resistance(Junction to Ambient)
- 80℃/W
- Voltage - DC Reverse(Vr)
- 40V
- Voltage - Forward(Vf)
- 700mV
- Voltage - Forward(Vf@If)
- 520mV@3A
Order codes
1- DSK34LCSC C727076
Pinout
2| Pin | Name | Type |
|---|---|---|
| 1 | K | Passive |
| 2 | A | Passive |
Open-source boards using it
All 20- 4 layers56 × 43.3 mm
- 6 layers91.8 × 139.8 mm
- 4 layers
CABadge V2 1
nbtca/CABadge
CABadge 计协电子吧唧：基于 ESP32-S3 的开源圆屏互动徽章，支持动态壁纸、触摸交互、Wi-Fi/BLE 和趣味小应用，提供 PCB、3D 打印外壳、固件及配套工具。
110 parts15MIT - 4 layers250.4 × 131 mm
Panel-16
geezacoleman/owl-driver-board
Development of a board that receives GPIO input and allows on/off control of connected solenoids.
939 parts14MIT - 4 layers47 × 59.7 mm
Tackle sensor hardware
Celnardur/rfc_tackle_sensor
Open a git bash terminal in the directory of your choosing and call the following command:
79 parts3MIT - 4 layers91 × 30.1 mm
Strelka Flight Computer
LulaUAV/Strelka-Flight-Computer
Strelka exists in the family of rocket dog flight computers. This flight computer is fully capable of deploying recovery events.
170 parts2 - 2 layers131 × 111.1 mm
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<iframe src="https://pcbkit.io/embed/parts/twgmc/DSK34" title="DSK34 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/twgmc/DSK34.jpg" alt="DSK34" width="1200" height="900">[](https://pcbkit.io/parts/twgmc/DSK34)Questions
Is there a KiCad symbol and footprint for the DSK34?
Yes. The symbol is Device:D_Schottky and the footprint Diode_SMD:D_SOD-123F, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the DSK34?
SOD-123FL, with 2 pins. Its footprint is drawn on this page.
Where is the DSK34 datasheet?
TWGMC publishes it: the Datasheet link on this page opens it.
Where can I order the DSK34?
JLCPCB lists it as part C727076, with 491,155 in stock; the sellers' links on this page open their listings.
What can replace the DSK34?
Parts like it in the library: the DSK34 by hongjiacheng, the DSK34 by MDD, the DSL34 by hongjiacheng and the DSS34 by BORN. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the DSK34?
20 boards in 14 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
8
DSK34
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