Products

PTP-46D-IT

Suggested applications

Sensing of surface temperatures (such as temperature of heat sinks)

Protection of inverters from overheating

Advantages

Ideally suited for detecting surface temperatures

Easy to install using one M3-size screw

UL listed component (UL E225177)

Available options include:

Change of R and B characteristics: PTP-46D (standard type) PMP-342 (high-resistance type)
Resistance value: R = 2.06KΩ ±2% (at 85℃) R = 63.26KΩ ±5% (at 100℃)
B constant: B=3970K±2% (from 0℃ to 100℃) B=5133K±3% (from 200℃ to 300℃)

Connectors: A variety of connectors are available; please inquire for more information. Optional connectors must be UL Recognized Components, rated at 65℃ or higher.

Insulation tubes: available from UL Recognized Components; ratings VW-1, 300V, 105C°

Locking cable tie: available from UL Recognized Components.

Shape and dimensions:

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Specifications:

Resistance R = 2.06kΩ ±2% (at 85℃) B constant B = 3970K ±2% (between 0℃ and 100℃) Insulation resistance over 100MΩ at 500V DC megger (at room temperature, between ring terminal and lead wire or connector) Dielectric strength No failure with 1500V AC applied for one minute (cut-off current 0.5mA, at room temperature, between ring terminal and lead wire or connector) Thermal time constant τ = approximately 20 seconds (when pressed onto 100℃ aluminum plate) Thermal dissipation constant σ = 2.5 to 3.5mW/℃ (in still air) Recommended power consumption 2.5mW Maximum power consumption 10mW Operating temperature range -20℃ to +105℃ (only sensing section at tip) Storage temperature range -25℃ to +75℃ (no applied current or external pressure) Operating humidity range 0 to 90% relative humidity (no dew condensation, except for housing) Storage humidity range 20 to 70% relative humidity (no dew condensation, except for housing)

Download R/T table for PTP-46D-IT

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Reliability testing: other rating
Normal operations cannot be guaranteed if the following parameters are exceeded

Mechanical strength tests Lead tensile strength 30N (both wires together) x 15 seconds Bending test With terminal fixed, lead wires are subjected to 10N of tension. Lead wire is bent 90° at the neck, the returned to original shape. Test time 5 seconds. The same test is then done in the opposite direction, completing one cycle. Two cycles are performed. Environmental resistance tests Heat resistanceq 1,000 hours at 105℃ ±3℃ Cold resistance 1,000 hours at -20℃ ±2℃ Thermal shock resistance 1,000 cycles of the following test: -20℃ (in air) to 90℃ (in air)

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Instructions for handling, installation and use of thermistors
Please carefully follow these instructions to avoid damage to and/or faulty operation of thermistors:

1.	Never exceed maximum rated power.
2.	When the thermistor is used as a sensor for the control of a device, be sure to incorporate appropriate safety measures to prevent accidents, such as a separate safety circuit or back-up sensor.
3.	If the thermistor will be exposed within the device, an instruction to end users warning that the thermistor must not be touched must be included.
4.	Ensure that the thermistor is not placed into the mouth or eyes; keep away from children and pets.
5.	Use of thermistors in the following conditions may degrade thermistor function or lifespan; the customer must make their own checks of performance and reliability: Presence of corrosive gases, such as C12, NH3, SOx, NOx Environment with high electric conductivity, such as electrolytes, water, saltwater, etc. Presence of acids, alkalis or organic solvents Dusty or dirty environments When thermistors are resin sealed or resin coated
6.	When disposing of thermistors, treat them as industrial waste and observe all applicable laws and regulations.
7.	To minimize temperature measurement error, the heat sensing surface of the thermistor must be in direct contact with the object to be measured.
8.	The thermistor must be kept away from condensate, dew, or other moisture.

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