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US1B on a board, in 3D

US1B

Diodes Incorporated

-65℃~+150℃ 100V 1A 1V@1A 50ns 5uA SMA Fast Recovery / High Efficiency Diodes ROHS

Extended
DatasheetJLCPCBLCSCdiodes/US1B
Category
Fast Recovery , High Efficiency Diodes
Package
SMA
Pins
2

Overview

The US1B is a fast Recovery , High Efficiency Diode made by Diodes Incorporated in a SMA package with 2 pins. -65℃~+150℃ 100V 1A 1V@1A 50ns 5uA SMA Fast Recovery / High Efficiency Diodes ROHS.

PCBKit's library has its KiCad symbol (Diode:US1B, from KiCad's library) and its footprint (Diode_SMD:D_SMA, from KiCad's library), ready for a KiCad board. 20,913 are in stock at JLCPCB (part C154439). 7 open-source boards in 7 repositories on GitHub use it.

Symbol

Diode:US1BFrom KiCad's library

Footprint

12
Diode_SMD:D_SMAFrom KiCad's library

From the datasheet

4
Reverse voltage, most
100 V · max working peak reverse voltage, US1B · p. 2
Forward current, most
1 A · max average rectified current at TT = +75°C · p. 2
Forward voltage
1 V · max forward voltage at IF = 1.0A, US1B · p. 2
Junction, hottest
150 °C · max operating junction temperature · p. 2

What it is and has

3
Construction
Glass passivated die · p. 1
Recovery
Ultra-fast recovery for high efficiency · p. 1
Package
SMA · p. 1

Specifications

13
ParameterConditionsAs printedPage
Peak Repetitive Reverse Voltage VRRMUS1B; TA = +25°Cmax 100 V2
Working Peak Reverse Voltage VRWMUS1B; TA = +25°Cmax 100 V2
DC Blocking Voltage (Note 4) VRUS1B; TA = +25°C; short duration pulse testmax 100 V2
RMS Reverse Voltage VR(RMS)US1B; TA = +25°Cmax 70 V2
Average Rectified Output Current IOUS1B; TT = +75°C; single phase, half wave, 60Hz, resistive or inductive loadmax 1 A2
Non-Repetitive Peak Forward Surge Current 8.3ms Single Half Sine-Wave Superimposed on Rated Load IFSMUS1B; TA = +25°Cmax 30 A2
Maximum Thermal Resistance, Junction to Terminal RθJTUS1B; SMAmax 30 °C/W2
Operating and Storage Temperature Range TJ, TSTGUS1Bmin -65 · max 150 °C2
Forward Voltage Drop VFMUS1B; IF = 1.0A; TA = +25°Cmax 1 V2
Peak Reverse Current at Rated DC Blocking Voltage (Note 4) IRMUS1B; TA = +25°C; rated DC blocking voltage; short duration pulse testmax 5 uA2
Peak Reverse Current at Rated DC Blocking Voltage (Note 4) IRMUS1B; TA = +100°C; rated DC blocking voltage; short duration pulse testmax 100 uA2
Reverse Recovery Time (Note 5) trrUS1B; TA = +25°C; IF = 0.5A, IR = 1.0A, Irr = 0.25Amax 50 ns2
Typical Total Capacitance (Note 6) CTUS1B; TA = +25°C; 1.0MHz; applied reverse voltage of 4.0V DCtyp 20 pF2

Parameters

10
Current - Rectified
1A
Forward Current(If)
1A
Junction Temperature(Max)
150℃
Operating Junction Temperature Range
-65℃~+150℃
Reverse Leakage Current (Ir)
5uA
Reverse Recovery Time (trr)
50ns
Reverse Voltage
100V
Voltage - DC Reverse(Vr)
100V
Voltage - Forward(Vf)
1V
Voltage - Forward(Vf@If)
1V@1A

Order codes

1

Pinout

2
The pins of the US1B
PinNameType
1KPassive
2APassive

Open-source boards using it

All 7
  • 4 layers96 × 172 mmServo cpu, the printed circuit board in 3D

    Servo cpu

    wiciu15/servo2

    Servo inverter for 3-phase AC motor with/out encoder feedback

    167 parts29
  • 2 layers119.9 × 108 mmLx deciim, the printed circuit board in 3D

    Lx deciim

    lucblender/lx-deciim

    lx-deciim is a dual-channel bitcrusher Eurorack module based on the Daisy Seed. Unlike traditional bitcrushers, it lets you selectively disable bits and replace them with CV-controlled triggers.

    206 parts5
  • 2 layers9.8 × 110 mm2hp simple switch button, the printed circuit board in 3D

    2hp simple switch button

    lucblender/lx-sw-btn

    The "lx-sw-btn": a 2HP eurorack module with 4 customizable switches enabled CV outputs!

    37 parts1MIT
  • 2 layers20 × 108 mmMidi sync module, the printed circuit board in 3D

    Midi sync module

    lucblender/MIDI-sync-power-dev-board

    The MIDI-sync-power-dev-board is a 4hp eurorack module allowing you to get an isolated 5V, 3.3V from LDO, a sync in from 3.5mm jack and either midi input or midi output.

    41 parts1MIT
  • 2 layers104.1 × 79.4 mmPSE RP2040, the printed circuit board in 3D

    PSE RP2040

    G10v4nn/PPSE_Board_Code

    134 parts
  • 4 layers178 × 83.3 mmDeloop lite mk0, the printed circuit board in 3D

    Deloop lite mk0

    hmcty/kicad-ws

    Collection of personal KiCAD projects

    99 partsMIT
  • 2 layers54 × 57 mmTremolo, the printed circuit board in 3D

    Tremolo

    PyrooL/tremolo

    A tap-tempo tremolo pedal based on the TAPLFO

    59 parts

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Questions

Is there a KiCad symbol and footprint for the US1B?

Yes. The symbol is Diode:US1B 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.

What package is the US1B?

SMA, with 2 pins. Its footprint is drawn on this page.

Where is the US1B datasheet?

Diodes Incorporated publishes it: the Datasheet link on this page opens it.

Where can I order the US1B?

JLCPCB lists it as part C154439, with 20,913 in stock; the sellers' links on this page open their listings.

What can replace the US1B?

Parts like it in the library: the US1M by MDD, the RS1M by hongjiacheng, the ES1J by GOODWORK and the ES1B by hongjiacheng. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the US1B?

7 boards in 7 repositories on GitHub; the most starred are listed on this page, with their KiCad files.

Parts like it

8