Datasheet

Chip NTC Thermistor
RND is a trademark of Distrelec
Notes & Warnings
The RND 155QN series thermistors shall not be operated and stored under the following environmental conditions:
• Corrosive or deoxidized atmospheres (such as chlorine, sulfurated hydrogen, ammonia, sulfuric acid, nitric oxide and so on)
• Volatile or inflammable atmospheres
• Dusty condition
• Excessively high or low pressure condition
• Humid site
• Places with brine, oil, chemical liquid or organic solvent
• Intense vibration
• Places with analogously deleterious conditions
• The ceramic body of the RND 155QN series thermistors is fragile, no excessive pressure or impact shall be exerted on it
• The RND 155QN series thermistors shall not be operated beyond the specified “Operating Temperature Range” in the catalog
Re-Flowing Profile
• 1~2℃/sec. Ramp
• Pre-heating: 150~170℃/90±30 sec.
• Time above 240℃: 20~40 sec.
• Peak temperature: 260℃Max./10 sec.
• Solder paste: Sn/3.0Ag/0.5Cu
• Max.2 times for re-flowing
Iron Soldering Profile
• Iron soldering power: Max.20W
• Pre-heating: 150℃/60sec.
• Soldering Tip temperature: 280
℃Max.
• Soldering time: 3 sec Max.
• Solder paste: Sn/3.0Ag/0.5Cu
• Max.1 times for iron soldering
Note: Take care not to apply the tip of the soldering iron to the terminal electrodes