The US1M is a fast Recovery , High Efficiency Diode made by MDD in a SMA package with 2 pins. -55℃~+150℃ 1 Independent 1.65V@1A 1A 1kV 30A 5uA@1kV 75ns SMA Fast Recovery / High Efficiency Diodes ROHS.
PCBKit's library has its KiCad symbol (Diode:US1M, from KiCad's library) and its footprint (Diode_SMD:D_SMA, from KiCad's library), ready for a KiCad board. 2,209,361 are in stock at JLCPCB (part C412437). 80 open-source boards in 57 repositories on GitHub use it.
| Parameter | Conditions | As printed | Page |
|---|---|---|---|
| Maximum repetitive peak reverse voltage VRRM | US1M; TA = 25°C unless otherwise specified | max 1000 V | 1 |
| Maximum RMS voltage VRMS | US1M; TA = 25°C unless otherwise specified | max 700 V | 1 |
| Maximum DC blocking voltage VDC | US1M; TA = 25°C unless otherwise specified | max 1000 V | 1 |
| Maximum average forward rectified current I(AV) | US1M; TL=125℃; single phase half-wave 60Hz, resistive or inductive load; for capacitive load current derate by 20% | max 1 A | 1 |
| Peak forward surge current IFSM | US1M; 8.3ms single half sine-wave superimposed on rated load (JEDEC Method) | max 30 A | 1 |
| Maximum instantaneous forward voltage at 1.0A VF | US1M; TA = 25°C | max 1.7 V | 1 |
| Maximum DC reverse current at rated DCblocking voltage IR | US1M; TA=25℃ | max 5 uA | 1 |
| Maximum DC reverse current at rated DCblocking voltage IR | US1M; TA=125℃ | max 100 uA | 1 |
| Maximum reverse recovery time trr | US1M; IF=0.5A, IR=1.0A, Irr=0.25A | max 75 ns | 1 |
| Typical junction capacitance CJ | US1M; measured at 1MHz and applied reverse voltage of 4.0V D.C. | typ 15 pF | 1 |
| Typical thermal resistance RJA | US1M; DO-214AC/SMA; P.C.B. mounted with 2.0x2.0”(5.0x5.0cm) copper pad areas | typ 55 ℃/W | 1 |
| Typical thermal resistance RθJC | US1M; DO-214AC/SMA; P.C.B. mounted with 2.0x2.0”(5.0x5.0cm) copper pad areas | typ 11 ℃/W | 1 |
| Operating junction and storage temperature range TJ,TSTG | US1M | min -55 · max 150 ℃ | 1 |
| Pin | Name | Type |
|---|---|---|
| 1 | K | Passive |
| 2 | A | Passive |
nordstream3/FOC
Date | Manufacturer | amount | includes | shipping & tax | price | -------- | -------- | -------- | -------- | -------- | -------- | 2024-01-17 | JLCPCB | 10 boards | All assembled excl fets and caps | YES, to EU |…
Millisman/EG8010
Collection of designs for the EG8010 (ASIC for single-phase SPWM control H-bridge)
andykarpov/nanit
Alternate PCB for NANIT project https://radiokot.ru/circuit/digital/measure/117/
hacklabkyiv/prismo-reader
RFID readers of Prismo access management system
felipeschmitt04/ecu-pic16f877a
Academic ECU project in C for the PIC16F877A, with Proteus simulation and KiCad PCB design.
AronASzucs/Avalanche32
Handheld ESP32-S3 Geiger counter with a firmware-regulated 400 V boost, SBM-20 tube, USB-C charging and OLED display.
<iframe src="https://pcbkit.io/embed/parts/mdd/US1M" title="US1M in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/mdd/US1M.jpg" alt="US1M" width="1200" height="900">[](https://pcbkit.io/parts/mdd/US1M)Yes. The symbol is Diode:US1M and the footprint Diode_SMD:D_SMA, both drawn on this page. PCBKit places them on a board for you when you design with it.
SMA, with 2 pins. Its footprint is drawn on this page.
MDD publishes it: the Datasheet link on this page opens it.
JLCPCB lists it as part C412437, with 2,209,361 in stock; the sellers' links on this page open their listings.
Parts like it in the library: the RS1M by hongjiacheng, the US1M by hongjiacheng, the RS1M by MDD and the US1M-E3 by Vishay Intertechnology. Check their datasheets: a part that fits the footprint may still differ in its ratings.
80 boards in 57 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
