The Hakko FG-101 is a soldering iron tester that measures tip temperature, leak voltage, and tip-to-ground resistance with high accuracy and repeatability. It delivers fast, stable readings across a wide temperature range and includes intelligent measurement functions designed for quality control in electronics assembly, repair, and lead-free soldering operations.
– Technical Specifications
Temperature Measurement
• Range: 0°C to 700°C (32°F to 1300°F)
• Resolution: 1°C or 1°F
• Accuracy: ±3°C (300°C to 600°C); ±5°C (outside this range); ±6°F (572°F to 1112°F); ±10°F (outside this range)
• Sensor: K-type thermocouple (AS5000 included); standard sensor (191-212) limited to 500°C (932°F)
Voltage Measurement
• Range: 0 to 40 mV AC
• Resolution: 0.1 mV
• Accuracy: ±(5% of reading + 1 digit)
Resistance Measurement
• Range: 0 to 40 Ω
• Resolution: 0.1 Ω
• Accuracy: ±(5% of reading + 1 digit)
Physical & Operational
• Display: 3.5-digit LCD
• Dimensions: 211 × 53 × 126 mm (8.31 × 2.09 × 4.96 in.)
• Weight: 0.95 kg (2.09 lb.)
• Power: 120V/2W to 3.2W
• Operating environment: 0°C to 40°C; 0 to 90% RH
– Key Features
• Auto Hold automatically terminates measurement when tip temperature stabilizes
• Max Hold captures and displays the maximum recorded temperature
• Auto Zero corrects zero-point error for voltage and resistance measurements
• Infrared data transmission sends temperature results to compatible Hakko soldering stations and pots
• Temperature display toggles between Celsius and Fahrenheit
• Resists drift and ambient temperature variations for consistent long-term performance
– Typical Applications
Soldering iron validation, thermal profiling, lead-free solder process verification, and quality assurance in electronics manufacturing and field service environments.
– Compatibility & Integration
Works with Hakko soldering stations FN-1010, FX-805, FX-971, FX-972, and soldering pot FX-305 (IR receiver required). Unsuitable for ungrounded soldering iron tips. Replacement sensors (191-212, pack of 10) available separately.
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