This part is a kind of semiconductor called 71090.

Function of this product has P-Channel 30-V (D-S) MOSFET.

Manufacturers : Vishay Siliconix

Image and pinout :

Some of the text within the PDF file :

Si3455ADV Vishay Siliconix P-Channel 30-V (D-S) MOSFET PRODUCT SUMMARY VDS (V) −30 rDS(on) (W) 0.100 @ VGS = −10 V 0.170 @ VGS = −4.5 V ID (A) −3.5 −2.7 TSOP-6 Top View 1 3 mm 6 5 (3) G 3 4 (4) S 2 2.85 mm Ordering Information: Si3455ADV-T1 Si3455ADV-T1E3 (Lead Free) Marking Code: A5xxx (1, 2, 5, 6) D P-Channel MOSFET ABSOLUTE MAXIMUM RATINGS (TA = 25_C UNLESS OTHERWISE NOTED) Parameter Drain-Source Voltage Gate-Source Voltage Continuous Drain Current (TJ = 150_C)a Pulsed Drain Current Continuous Source Current (Diode Conduction)a Maximum Power Dissipationa Operating Junction and Storage Temperature Range TA = 25_C TA = 70_C TA = 25_C TA = 70_C Symbol VDS VGS ID IDM IS PD TJ, Tstg 5 secs Steady State −30 "20 Unit V −3.5 −2.8 −20 −1.7 2.0 1.3 −55 to 15 [ ... ]

71090 PDF Datasheet Download