©2001 PACE Inc., Laurel, Maryland
Page 3 of 14
All Rights Reserved
Introduction
Thank you for purchasing the PACE model ST 25 or ST 35 Digital Soldering System. This manual will
provide you with the information necessary to properly set up, operate and maintain the ST 25 or ST 35.
The ST 25 and ST 35 systems are available in either 115 VAC or 230 VAC versions, which incorporates a
highly responsive SensaTemp (closed loop) control system providing up to 80 Watts of total power to a
single output channel. The 230 VAC version system bears the CE Conformity Marking, which assures
the user that it conforms to EMC 89/336/EEC.
The 115 VAC version systems conform to FCC Emission Control Standard, Title 47, Subpart B, Class A.
This standard is designed to provide reasonable protection against harmful interference when the
equipment is operated in a commercial environment.
Specifications
System Power Source Power Requirements
ST 25 or ST 35
Operates on 97-127 VAC, 50/60Hz, 90 Watts maximum at 115 VAC,
60Hz
ST 25E or ST 35E
Operates on 197-253 VAC 50/60Hz, 80 Watts maximum at 230 VAC,
50Hz
Temperature Specifications
Handpieces
Tip Temperature Range: 204 to 455°C (400 to 850°F) nominal.
Temperature Stability: ±1.1°C (±2°F) at idle from set tip temp.
NOTE:
Actual minimum and maximum Operating Tip Temperatures may vary depending on
Handpiece, Tip Selection and application.
EOS/ESD Specifications
The specifications shown below apply except on "Soft Ground Systems" which have a 1meg ohm
current limiting resistance and a label placed on the power source front panel referring to EN
100015-1.
Tip-To-Ground Resistance: Less than 2 ohms.
AC Leakage: Less than 2 Millivolts RMS from 50Hz to 10MHz.
Transient Level: Less than 500mV peak, out to 100MHz.
Parts Identification (ST 25 shown)
Power Receptacle
Front Panel LED
Temperature Selection Dial
Power Switch
AC Power Receptacle/Fuse Holder
Fuse
Earth Ground Receptacle (ST 25E, ST 35 and ST 35E only)
