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US2AA on a board, in 3D

US2AA

onsemi

-55℃~+150℃ 1.5A 1V@1.5A 50V 5uA@50V SMA(DO-214AC) Fast Recovery / High Efficiency Diodes ROHS

Extended
DatasheetJLCPCBLCSConsemi/US2AA
Category
Fast Recovery , High Efficiency Diodes
Package
SMA(DO-214AC)
Pins
2

Overview

The US2AA is a fast Recovery , High Efficiency Diode made by onsemi in a SMA(DO-214AC) package with 2 pins. -55℃~+150℃ 1.5A 1V@1.5A 50V 5uA@50V SMA(DO-214AC) Fast Recovery / High Efficiency Diodes ROHS.

PCBKit's library has its KiCad symbol (Diode:US2AA, from KiCad's library) and its footprint (Diode_SMD:D_SMA, from KiCad's library), ready for a KiCad board. 300 are in stock at JLCPCB (part C896157). 7 open-source boards in 7 repositories on GitHub use it.

Symbol

Diode:US2AAFrom KiCad's library

Footprint

12
Diode_SMD:D_SMAFrom KiCad's library

From the datasheet

5
Reverse voltage, most
50 V · max repetitive peak reverse voltage · p. 2
Forward current, most
1.5 A · max average forward rectified current · p. 2
Junction, hottest
150 °C · max operating junction temperature · p. 2
Junction to air (SMA/DO−214AC)
189 K/W · typical junction-to-ambient, minimum pad · p. 2
Forward voltage
1 V · max instantaneous forward voltage at rated IF(AV) = 1.5 A · p. 2

What it is and has

5
Junction
Glass passivated chip junction · p. 1
Surge capacity
High · p. 1
Flammability
UL 94 V − 0 · p. 1
Moisture sensitivity
MSL 1 per J−STD−020 · p. 1
Environmental compliance
RoHS compliant; green molding compound · p. 1

Specifications

14
ParameterConditionsAs printedPage
Repetitive Peak Reverse Voltage VRRMUS2AAmax 50 V2
RMS Reverse Voltage VRMSUS2AAmax 35 V2
DC Blocking Voltage VDCUS2AAmax 50 V2
Average Forward Rectified Current IF(AV)US2AAmax 1.5 A2
Peak Forward Surge Current IFSMUS2AA; 8.3 ms Single Half−Sine Wave, Superimposed on Rated Loadmax 50 A2
Operating Junction Temperature Range TJUS2AAmin -55 · max 150 °C2
Storage Temperature Range TSTGUS2AAmin -55 · max 150 °C2
Typical Thermal Resistance, Junction−to−Ambient RqJAUS2AA; TA = 25°C; device mounted at minimum padtyp 189 °C/W2
Typical Thermal Characteristics, Junction−to−Lead (with Reference to Cathode Pin) YJLUS2AA; TA = 25°C; device mounted at minimum padtyp 31 °C/W2
Maximum Instantaneous Forward Voltage (Note2) VFUS2AA; TA = 25°C; at Rated IF(AV); pulse test with PW = 300 ms, 1% duty cyclemax 1 V2
Maximum Reverse Current at Rated VR IRUS2AA; TJ = 25°C; at Rated VRmax 5 mA2
Maximum Reverse Current at Rated VR IRUS2AA; TJ = 125°C; at Rated VRmax 100 mA2
Maximum Reverse Recovery Time (Note 3) trrUS2AA; TA = 25°C; IF = 0.5 A, IR = 1.0 A, IRR = 0.25 Amax 50 ns2
Typical Junction Capacitance (Note 4) CJUS2AA; TA = 25°C; measured at 1 Mhz and applied reverse voltage of 4.0 V D.C.typ 50 pF2

Ordering codes, by the datasheet

2
US2AA
DO−214AC (SMA) · 50 V repetitive peak reverse voltage; tape and reel · p. 1
NRVUS2AA
DO−214AC (SMA) · NRV prefix for automotive and other applications requiring unique site and control change requirements; AEC−Q101 qualified and PPAP capable; tape and reel · p. 1

Parameters

10
Current - Rectified
1.5A
Forward Current(If)
1.5A
Junction Temperature(Max)
150℃
Operating Junction Temperature Range
-55℃~+150℃
Reverse Leakage Current (Ir)
5uA@50V
Reverse Voltage
50V
Thermal Resistance(Junction to Ambient)
189℃/W
Voltage - DC Reverse(Vr)
50V
Voltage - Forward(Vf)
1V
Voltage - Forward(Vf@If)
1V@1.5A

Order codes

1

Pinout

2
The pins of the US2AA
PinNameType
1KPassive
2APassive

Open-source boards using it

All 7
  • 2 layers130.8 × 134.4 mmMyFirstBuck, the printed circuit board in 3D

    MyFirstBuck

    ManveerA/Buck_Converter_PCB

    Repository for Buck Converter PCB design project for ELEC-4450 Power Electronics.

    50 parts1
  • 2 layers130.8 × 147.6 mmBuck Converter, the printed circuit board in 3D

    Buck Converter

    adamino-moss/adams-buck

    46 parts
  • 2 layers143.5 × 129.5 mmBuck PCB, the printed circuit board in 3D

    Buck PCB

    CollinObrien1/Custom-Buck-Converter

    Custom Buck PCB for Power Electronics

    49 parts
  • 2 layersKeyPad PCB, the printed circuit board in 3D

    KeyPad PCB

    PrintBot-Studio/3D-Printed-Arduino-based-Keypad

    21 parts
  • 2 layers48.1 × 24.8 mmMotor driver, the printed circuit board in 3D

    Motor driver

    zeph-bit/motor_driver

    A simple motor driver circuit.

    20 partsMIT
  • 2 layers68 × 91.5 mmPcbfrfr, the printed circuit board in 3D

    Pcbfrfr

    nfranzwa/OscillatingPump

    Pump

    36 parts2Apache-2.0

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A picture that opens the part, for a README
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Questions

Is there a KiCad symbol and footprint for the US2AA?

Yes. The symbol is Diode:US2AA 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 US2AA?

SMA(DO-214AC), with 2 pins. Its footprint is drawn on this page.

Where is the US2AA datasheet?

onsemi publishes it: the Datasheet link on this page opens it.

Where can I order the US2AA?

JLCPCB lists it as part C896157, with 300 in stock; the sellers' links on this page open their listings.

What can replace the US2AA?

Parts like it in the library: the ES2J by hongjiacheng, the ES2D by Shandong Jingdao Microelectronics, the US2M by MDD and the RS2M by hongjiacheng. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the US2AA?

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

Parts like it

8