Download:

Schematic - click here      

Parts  - click here     

Single-side PCB (25.9 x 55.1 mm)  - click here   

Part list:

Resistors :
R1 - 12 K  SMD (size 1206)
R2 - not use if you have R1=12K and C3=1n5
R3 - 270 SMD (size 1206)
R4 - 2R7 (not SMD, size 0207)
R5 - 100 K  SMD (size 1206)

Capacitors :
C1 - 47uF / 6.3V tantalum
C2 - 47uF / 6.3V tantalum
C3 - 1n5 SMD (size 1206)
C4 - not used
C5 - 100n SMD (size 1206)
C6 - 100n SMD (size 1206)

ICs :
IC1 -   HSDL - 1001 (IR transceiver 115kBd 3V, SMD, HP - now Agilent Technologies)
IC2 -   74HC4538  (SMD)

Diodes :
D1 - HSDL - 4220 (IR LED 5mm 30°, HP - now Agilent Technologies)
D2 - red LED 3 mm

Connectors :
SV1 - 9 pin 2.54 mm, male (on board) + female (soldered on battery pack)

Box :
size 31 x 61 (WxL) mm

Battery Pack :
Battery Pack for two AAA batteries with 2 soldering contacts:

Battery :
2 pcs. of AAA alkaline batteries !
 

Remarks :

1. Battery life time in IDLE mode is approx. 4 month (depend on use). You can use small switch to switching between SLEEP mode and IDLE mode, so battery life can be increase up to 3 years (depend on use).

2. You can use PDAwin IR transceiver separately from your PDA up to range approx. 1 meter.