双极性晶体管

二极管

ESD保护、TVS、滤波和信号调节ESD保护

MOSFET

氮化镓场效应晶体管(GaN FET)

绝缘栅双极晶体管(IGBTs)

模拟和逻辑IC

汽车应用认证产品(AEC-Q100/Q101)

PSSI2021SAY

Constant current source in SOT353 package

Resistor-equipped PNP transistor with two diodes on one chip in a SOT353 (SC-88A) plastic package. Stabilized output current of between 15 uA and 50 mA by connection of an external resistor between pins 4 and 5.

Features and benefits

  • One chip integrated constant current source

  • Output current setting by use of an external resistor

  • Very small package

  • Reduces component count and board space

  • AEC-Q101 qualified

Applications

  • Automotive applications

  • Generic constant current source

  • Constant current LED driver

  • Active bias control for audio amplifiers

Parametrics

Type number Package version Package name Size (mm) VSUP [max] (V) Limiting IO with external resistor [max] (mA) IO [max] (mA) Ptot [max] (mW) channel type (e) Automotive qualified
PSSI2021SAY SOT353 TSSOP5 2.1 x 1.25 x 0.95 75.0 50.0 0.02 335.0 PNP Y

Package

Type number Orderable part number, (Ordering code (12NC)) Status Marking Package Package information Reflow-/Wave soldering Packing
PSSI2021SAY PSSI2021SAY,115
(934056564115)		 Active S1% SOT353
TSSOP5
(SOT353) 		SOT353 REFLOW_BG-BD-1
WAVE_BG-BD-1
SOT353_115

Environmental information

Type number Orderable part number Chemical content RoHS RHF-indicator
PSSI2021SAY PSSI2021SAY,115 PSSI2021SAY rohs rhf rhf
Quality and reliability disclaimer

Documentation (13)

File name Title Type Date
PSSI2021SAY Constant current source in SOT353 package Data sheet 2009-09-10
SOT353 3D model for products with SOT353 package Design support 2019-01-18
Nexperia_document_factsheet_LED_Driver_2020 Constant current LED Drivers Leaflet 2020-08-18
Nexperia_document_factsheet_LED_Driver_2020_CHN LED Driver Factsheet CHN Leaflet 2020-08-20
Nexperia_package_poster Nexperia package poster Leaflet 2020-05-15
TSSOP5_SOT353_mk plastic, surface-mounted package; 5 leads; 1.3 mm pitch; 2 mm x 1.25 mm x 0.95 mm body Marcom graphics 2017-01-28
SOT353 plastic, surface-mounted package; 5 leads; 0.65 mm pitch; 2.1 mm x 1.25 mm x 0.95 mm body Package information 2022-05-31
SOT353_115 Tape reel SMD; standard product orientation 12NC ending 115 Packing information 2020-04-27
PSSI2021SAY_Nexperia_Product_Reliability PSSI2021SAY Nexperia Product Reliability Quality document 2024-04-22
REFLOW_BG-BD-1 Reflow soldering profile Reflow soldering 2021-04-06
PSSI2021SAY PSSI2021SAY SPICE model SPICE model 2024-08-27
MAR_SOT353 MAR_SOT353 Topmark Top marking 2013-06-03
WAVE_BG-BD-1 Wave soldering profile Wave soldering 2021-09-08

Support

If you are in need of design/technical support, let us know and fill in the answer form we'll get back to you shortly.

Models

File name Title Type Date
PSSI2021SAY PSSI2021SAY SPICE model SPICE model 2024-08-27
SOT353 3D model for products with SOT353 package Design support 2019-01-18

Ordering, pricing & availability

Type number Orderable part number Ordering code (12NC) Status Packing Packing Quantity Buy online
PSSI2021SAY PSSI2021SAY,115 934056564115 Active SOT353_115 3,000 Order product

Sample

As a Nexperia customer you can order samples via our sales organization.

If you do not have a direct account with Nexperia our network of global and regional distributors is available and equipped to support you with Nexperia samples. Check out the list of official distributors.

How does it work?

The interactive datasheets are based on the Nexperia MOSFET precision electrothermal models. With our interactive datasheets you can simply specify your own conditions interactively. Start by changing the values of the conditions. You can do this by using the sliders in the condition fields. By dragging the sliders you will see how the MOSFET will perform at the new conditions set.

Interactive datasheet

Orderable parts

Type number Orderable part number Ordering code (12NC) Package Buy from distributors
PSSI2021SAY PSSI2021SAY,115 934056564115 SOT353 Order product