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!Note This catalog downloaded from website Murata Manufacturing co., ltd. Therefore, it's specifications subject change products discontinued without advance notice. Please check with
sales representatives product engineers before ordering. This catalog only typical specifications because there space detailed specifications. Therefore, please approve product specifications transact approval sheet product specifications before ordering.
R01E.pdf 06.1.25
Surface Mounting Application
!Note This catalog downloaded from website Murata Manufacturing co., ltd. Therefore, it's specifications subject change products discontinued without advance notice. Please check with
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R01E.pdf 06.1.25
What Thermistor?
Thermally Sensitive Resistor
Characteristics Thermistors
Resistance Temperature Characteristics
2xR25
Thermistor
Positive Temperature Coefficient
Thermistor
(POSISTORr)
BaTiO Ceramics
Negative Temperature Coefficient
Curie Point
Thermistor
Mn-Ni, Mn-Co-Cu, Mn-Ni Ceramics
PRF15/18 Series Chip POSISTORr Overheat Sensing
PRF15/18 Chip thermistors detect overheating Hybrid ICs, Power Transistors, Power Diodes Power etc. 0402 0603 light weight +Vcc
Thermal Contact
High gain simplifies circuit design Free contact noise problems free plated terminations. Sturdy construction resists mechanical vibration shock. Example
Motor
Power Thermal Contact Comparator Control
Vref
PRF15 Series Characteristics
Part Number PRF15BA471QB1RC PRF15BB471QB1RC PRF15BC471QB1RC Characteristics 470ohm ±50%
Resistance +25°C)
Sensing Temp. 4.7k ohm) 125±5°C 115±5°C 105±5°C
Maximum Voltage
Operating Temp. +140°C
32VDC
+130°C +120°C
Dimensions
0.5±0.05 0.1-0.4 1.0±0.05 0.5±0.05
Electrode Construction Cross-sectional
Ceramic
Plating
Nickel Barrier
!Note This catalog downloaded from website Murata Manufacturing co., ltd. Therefore, it's specifications subject change products discontinued without advance notice. Please check with
sales representatives product engineers before ordering. This catalog only typical specifications because there space detailed specifications. Therefore, please approve product specifications transact approval sheet product specifications before ordering.
R01E.pdf 06.1.25
PRF18 Series Characteristics
Part Number PRF18AS471QB1RB PRF18AR471QB1RB PRF18BA471QB1RB PRF18BB471QB1RB PRF18BC471QB1RB PRF18BD471QB1RB PRF18BE471QB1RB PRF18BF471QB1RB PRF18BG471QB1RB
Also available with tolerance ±3°C
Characteristics
Resistance +25°C)
Sensing Temp. 4.7k ohm) 145±5°C 135±5°C 125±5°C 115±5°C
Maximum Voltage
Maximum Current
Operating Temp. +160°C +150°C +140°C +130°C
±50%
105±5°C 95±5°C 85±5°C 75±5°C 65±5°C
32VDC
30mA
+120°C +110°C +100°C 90°C 80°C
Rating (0603) Lead Free Terminations Type UL1434 (except types)
Part Number PRF18BA473QB1RB Characteristics
Resistance +25°C) 470k ±50%
Sensing Temp. 4.7k ohm) 130±5°C
Maximum Voltage 32VDC
Operating Temp. +140°C
Current Consumption! Dimensions
0.8±0.15 0.1-0.6 1.6±0.15 0.8±0.15
Electrode Construction Cross-sectional
Ceramic
Plating
Nickel Barrier
Circuit Examples
Bimetal POSISTORr
POSISTORr following advantages over Bimetal devices. Noise free
contact problems price
Zener Diode POSISTORr
POSISTORr following additional advantages over Zener Diodes. Reduced numbers parts used circuits
Mounting Area Parts
Zener Diode 10x10 100mm2 Parts Diode Transistor Resistor Amp. Total
POSISTORr 36mm2 Parts POSISTORr Transistor Resistor Amp. Total
Reduced process costs mounting parts PCBs Reduces occupied space, helping high density mounting
!Note This catalog downloaded from website Murata Manufacturing co., ltd. Therefore, it's specifications subject change products discontinued without advance notice. Please check with
sales representatives product engineers before ordering. This catalog only typical specifications because there space detailed specifications. Therefore, please approve product specifications transact approval sheet product specifications before ordering.
R01E.pdf 06.1.25
Markets Applications Overheat Sensing
<Set Used> Server Power Supply Adapter Game Video Camera Lighting Power Supply Audio DC-DC Converter Adapter Adapter Dimmer DC-DC Converter Audio Conditioner Brushless Motor Refrigerator PPC/Printer Copy Machine Brushless Motor Brushless Motor Lamp <Function PRF> Overheat Sensing Overheat Sensing Power Supply Overheat Sensing Inverter Module Backlight Overheat Sensing Overheat Sensing Case Overheat Sensing Overheat Sensing Overheat Sensing Overheat Sensing Power Overheat Sensing Overheat Sensing Power Hybrid Overheat Sensing Case Overheat Sensing Inverter Backlight Overheat Sensing Power Hybrid Overheat Sensing Power Hybrid Current Limitation Overheat Sensing Driver Overheat Sensing Driver Overheat Sensing Driver Overheat Sensing Lamp Starter Circuit -Temperature Fuse -Temperature Fuse -NTC Thermistor <Competitive Device> Temperature Fuse
PRG18/21 Series Chip POSISTORr Overcurrent Prevention
Chip THERMISTORS prevent failure apparatus excess current. 0603 0805 light weight High gain simplifies circuit design Free contact noise problems free plated terminations. Sturdy construction resists mechanical vibration shock.
Load
Series Characteristics
Ratings Lead Free Terminations
Part Number
Resistance +25°C) 0.20 ±20% ±20% ±20% ±20% ±20% ±20% ±20% ±20% ±20% ±20%
Maximum Voltage 6VDC 20VDC 20VDC
Maximum Current 3.5A 1.6A 1.1A 350mA 300mA
Non-operating Current +60°C) 500mA 100mA 80mA 40mA 30mA 25mA 20mA 15mA 10mA
Operating Current -10°C) 2000mA 400mA 320mA 140mA 110mA 85mA 75mA 55mA 35mA 25mA
PRG21BC0R2MM1RA PRG21BC4R7MM1RA PRG21BC6R8MM1RA PRG21BB150MB1RK PRG21BB220MB1RK PRG18BB330MB1RB PRG18BB470MB1RB PRG18BB101MB1RB PRG18BB221MB1RB PRG18BB471MB1RB
24VDC
200mA 90mA 40mA
!Note This catalog downloaded from website Murata Manufacturing co., ltd. Therefore, it's specifications subject change products discontinued without advance notice. Please check with
sales representatives product engineers before ordering. This catalog only typical specifications because there space detailed specifications. Therefore, please approve product specifications transact approval sheet product specifications before ordering.
R01E.pdf 06.1.25
Dimensions PRG18BB 1.6±0.15 0.8±0.15 0.1-0.6 PRG21BB 2.0±0.2 1.25±0.2 min. min. PRG21BC 2.0±0.2 1.25±0.2 0.9±0.2 min. min.
Multilayer Chip POSISTORr Overcurrent Protection
Electrode Construction Cross-sectional
Ceramic
PRG21BC Type Nickel Barrier Plating
Data here reference only. Specifications available upon request. Product evaluated, confirmed user before actual use. Description here revised without notice.
POSISTORr Ideas
From Fuse Resistor
Fuse Resistor
From Current Control Circuit
Limitting Circuit
Limitting Circuit
Auto-reset
Simple
Item
POSISTORr
Fuse Resistor
Control Circuit
Chip Resistor
From Chip Resistor
Safety
Repeat
Control Circuit
Control Circuit
Space
Down Sizing Overcurrent Protecting
Cost
Key: Cross Circle Good Triangle Little difference
!Note This catalog downloaded from website Murata Manufacturing co., ltd. Therefore, it's specifications subject change products discontinued without advance notice. Please check with
sales representatives product engineers before ordering. This catalog only typical specifications because there space detailed specifications. Therefore, please approve product specifications transact approval sheet product specifications before ordering.
R01E.pdf 06.1.25
Markets Applications Overcurrent Protection
<Product Use> Note Rechargeable Battery <POSISTORr Function> Current Limitation Overcurrent Protection Trickle Charging Circuit Current Limitation Overcurrent Protection Control Mother Board Short-circuit Protection Signal Line Short-circuit Protection Drive Module Overcurrent Protection Overcurrent Protection Output Circuit Overcurrent Protection Short-circuit Protection Optical Sensor Driver Circuit Using <Competitive Devices> Chip Resistor Fuse Resistor Chip Resistor
Game
DC-DC Converter
Power Supply
DC-DC Converter
Circuit Using
Audio
Signal Line
Leaded
Undefined
Optical Sensor
Chip Thermistor series
common relationship between Resistance constant sizes (0201/ 0402/ 0603/ 0805) offers convenience when downsizing. lead contained free). Tight resistance tolerance (Code available (0402, 0603), (0603) 100k (0603) products. High soldering heat resistant High humidity resistant unique inner electrodes.
Dimensions
Structure Plated Terminations
Ceramic
Silver Alloy Nickel Plating
Plating
NCP03 (0201 size) 0.60±0.03 0.3±0.03 0.10-0.20
NCP15 (0402 size) 1.00±0.05 0.50±0.05 0.15-0.35
NCP18 (0603 size) 1.60±0.15 0.80±0.15 0.20-0.60
NCP21 (0805 size) 2.00±0.20 1.25±0.20 0.85±0.15 0.20-0.70
!Note This catalog downloaded from website Murata Manufacturing co., ltd. Therefore, it's specifications subject change products discontinued without advance notice. Please check with
sales representatives product engineers before ordering. This catalog only typical specifications because there space detailed specifications. Therefore, please approve product specifications transact approval sheet product specifications before ordering.
R01E.pdf 06.1.25
Line-up Plated Termination
Resistance 25°C 1.0k 1.5k 2.2k 3.3k 4.7k 6.8k 100k 150k 220k 330k 470k 680k 1.0M Operating Temp. Dissipation Constant Packaging Certified UL1434
Recommended types Coming soon! Resistance tolerance codes: F=±1%, E=±3%, J=±5%, K=±10% ohm, ohm, 100k type have Tight Tolerance Type (±1%: NCP18XH103F03RB, NCP15XH103F03RC, NCP18WB473F10RB, NCP15WB473F03RC, NCP18WF104F12RB, NCP15WF104F03RC)
0201 NCP03 B-Constant 2750 2750 2750 2750 2750 2750 3100 3100 3100 3100 3100 3500 3500 3500 3500 3500 3380 3380 3380 3380 4250 4050 4250 4250 4750 4750 4750 4750 Part Number NCP03YS110* NCP03YS220* NCP03YS330* NCP03YS470* NCP03YS680* NCP03YS101* NCP03XC151* NCP03XC221* NCP03XC331* NCP03XC471* NCP03XC681* NCP03XM102* NCP03XM152* NCP03XM222* NCP03XM332* NCP03XM472* NCP03XH682* NCP03XH103* NCP03XH153* NCP03XH223* NCP03WF333* NCP03WB473* NCP03WF683* NCP03WF104* NCP03WQ334* NCP03WQ474* NCP03WQ684* NCP03WQ105* B-Constant 4485 4485 4485 4485 4485 Part Number NCP03WL473* NCP03WL683* NCP03WL104* NCP03WL154* NCP03WL224* B-Constant 3100 3100 3100 3100 3250 3250 3500 3500 3650 3650 3650 3950 3950 3950 3500 3950 3380 3950 3950 4050 4050 4150 4250 4500 4500 4500
0402 NCP15 Part Number NCP15XC220* NCP15XC330* NCP15XC470* NCP15XC680* NCP15XF101* NCP15XF151* NCP15XM221* NCP15XM331* NCP15XQ471* NCP15XQ681* NCP15XQ102* NCP15XW152* NCP15XW222* NCP15XW332* NCP15XM472* NCP15XW682* NCP15XH103* NCP15XW153* NCP15XW223* NCP15WB333* NCP15WB473* NCP15WD683* NCP15WF104* NCP15WM154* NCP15WM224* NCP15WM474* B-Constant 3900 4485 4485 4485 4485 4485 4485 +125°C Approx. mW/°C 03RC kpcs./reel Done Part Number NCP15XV103* NCP15WL223* NCP15WL333* NCP15WL473* NCP15WL683* NCP15WL104* NCP15WL154*
+125°C Approx. mW/°C 05RL kpcs./reel
!Note This catalog downloaded from website Murata Manufacturing co., ltd. Therefore, it's specifications subject change products discontinued without advance notice. Please check with
sales representatives product engineers before ordering. This catalog only typical specifications because there space detailed specifications. Therefore, please approve product specifications transact approval sheet product specifications before ordering.
R01E.pdf 06.1.25
Resistance 25°C 1.0k 1.5k 2.2k 3.3k 4.7k 6.8k 100k 150k 220k 330k 470k 680k 1.0M Operating Temp. Dissipation Constant Packaging Certified UL1434
0603 NCP18 B-Constant 3250 3250 3500 3500 3650 3650 3650 3950 3950 3950 3500 3950 3380 3950 3950 4050 4050 4150 4250 4500 4500 4500 Part Number NCP18XF101* NCP18XF151* NCP18XM221* NCP18XM331* NCP18XQ471* NCP18XQ681* NCP18XQ102* NCP18XW152* NCP18XW222* NCP18XW332* NCP18XM472* NCP18XW682* NCP18XH103* NCP18XW153* NCP18XW223* NCP18WB333* NCP18WB473* NCP18WD683* NCP18WF104* NCP18WM154* NCP18WM224* NCP18WM474* B-Constant 3900 +125°C Approx. mW/°C 03RB kpcs./reel Done Part Number NCP18XV103* 3500 3650 3650 3950 3500 3900 3950 3950 4050 4050 4250
0805 NCP21 B-Constant Part Number NCP21XM221* NCP21XQ471* NCP21XQ102* NCP21XW222* NCP21XM472* NCP21XV103* NCP21XW153* NCP21XW223* NCP21WB333* NCP21WB473* NCP21WF104* +125°C Approx. mW/°C 03RA kpcs./reel Done
Recommended types Coming soon! Resistance tolerance codes: F=±1%, E=±3%, J=±5%, K=±10% ohm, ohm, 100k type have Tight Tolerance Type (±1%: NCP18XH103F03RB, NCP15XH103F03RC, NCP18WB473F10RB, NCP15WB473F03RC, NCP18WF104F12RB, NCP15WF104F03RC)
!Note This catalog downloaded from website Murata Manufacturing co., ltd. Therefore, it's specifications subject change products discontinued without advance notice. Please check with
sales representatives product engineers before ordering. This catalog only typical specifications because there space detailed specifications. Therefore, please approve product specifications transact approval sheet product specifications before ordering.
R01E.pdf 06.1.25
Popular Applications Chip
Power Amplifier
Antenna
Contrast control. Drive voltage compensated utilizing NTC's temperature signal. High resistance values generally required, typically ohms 470k ohms Temperature compensation power amplifier (PA) module.
Controller Ground
Module
Amp.
Thermal Connection
Battery Pack (Li-Ion
Li-lon
Ambient temperature detection charging time. Detection battery cell heating abnormal circumstances. ohm±5% ohm±5% ohm±1% .etc.
Thermal Connection
Thermal Connection
More Popular Applications Chip NTCs
Personal Computer Portable Player Pager Digital Camera Camera
NCP03 (0201 size)
Mini Disk Player
lead mechanical pencil (0.5mm dia.)
NCP15 (0402 size)
NCP18 (0603 size)
NCP21 (0805 size)
Mobile Phone
Headphone Stereo Rechargeable Battery
Printer
Cassette Tuner
Auto Changer
!Note This catalog downloaded from website Murata Manufacturing co., ltd. Therefore, it's specifications subject change products discontinued without advance notice. Please check with
sales representatives product engineers before ordering. This catalog only typical specifications because there space detailed specifications. Therefore, please approve product specifications transact approval sheet product specifications before ordering.
R01E.pdf 06.1.25
Note:
Export Control customers outside Japan muRata products should used sold, through channels, design, development, production, utilization, maintenance operation otherwise contribution weapons (Weapons Mass Destruction (nuclear, chemical biological weapons missiles) conventional weapons) goods systems specially designed intended military end-use utilization military end-users. customers Japan products which controlled items subject "Foreign Exchange Foreign Trade Law" Japan, export license specified required export. Please contact sales representatives product engineers before using products this catalog applications listed below, which require especially high reliability prevention defects which might directly damage third party's life, body property, when products intended applications other than those specified this catalog. Aircraft equipment Aerospace equipment Undersea equipment Power plant equipment Medical equipment Transportation equipment (vehicles, trains, ships, etc.) Traffic signal equipment Disaster prevention crime prevention equipment Data-processing equipment Application similar complexity and/or reliability requirements applications listed above Product specifications this catalog January 2006. They subject change products discontinued without advance notice. Please check with sales representatives product engineers before ordering. there questions, please contact sales representatives product engineers. This catalog only typical specifications because there space detailed specifications. Therefore, please approve product specifications transact approval sheet product specifications before ordering. Especially, please read rating CAUTION (for storage, operating, rating, soldering, mounting handling) them prevent smoking and/or burning, etc. able read detailed specification website Search Engine (http://search.murata.co.jp/) catalog library before require product specification transact approval sheet product specification. Please note that unless otherwise specified, shall assume responsibility whatsoever conflict dispute that occur connection with effect and/or third party's intellectual property rights other related rights consideration your products and/or information described contained catalogs. this connection, representation shall made effect that third parties authorized rights mentioned above under licenses without consent. ozone depleting substances (ODS) under Montreal Protocol used manufacturing process.
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Head Office 1-10-1, Higashi Kotari, Nagaokakyo-shi, Kyoto 617-8555, Japan Phone: 81-75-951-9111 International Division 3-29-12, Shibuya, Shibuya-ku, Tokyo 150-0002, Japan Phone: 81-3-5469-6123 Fax: 81-3-5469-6155 E-mail: intl@murata.co.jp
Cat. R01E

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