B57891M472K EPCOS Inc, B57891M472K Datasheet - Page 19

• Manufacturer Part Number: B57891M472K
• Description: THERMISTOR NTC 4.7K OHM 10% RAD
• Manufacturer: EPCOS Inc
• Series: B57891r
• Type: NTCr

Specifications of B57891M472K

• Resistance In Ohms @ 25°c: 4.7K
• Resistance Tolerance: ±10%
• B Value Tolerance: ±3%
• B25/100: 3980K
• Operating Temperature: -40°C ~ 125°C
• Power - Max: 200mW
• Lead Length: 1.42" (36.00mm)
• Mounting Type: PCB, Through Hole
• Package / Case: Molded Disc
• Resistance: 4.7 KOhms
• Tolerance: 10 %
• Termination Style: Radial
• Operating Temperature Range: - 40 C to + 125 C
• Dimensions: 3.5 mm Dia. x 36 mm L
• Lead Spacing: 2.5 mm
• Power Rating: 200 mW
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• B0/50: -
• B25/50: -
• B25/75: -
• B25/85: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: B57891M 472K; B57891M0472K000

Cautions and warnings General
See "Important notes" at the end of this document.
Storage
Handling
Bending / twisting leads
Soldering
Please read Cautions and warnings and
Important notes at the end of this document.
Temperature measurement and compensation
Leaded NTC thermistors, lead spacing 2.5 mm
Store thermistors only in original packaging. Do not open the package prior to storage.
Storage conditions in original packaging: storage temperature
humidity 75% annual mean, <95% maximum 30 days per annum, dew precipitation is
inadmissible.
Do not store thermistors where they are exposed to heat or direct sunlight. Otherwise, the
packing material may be deformed or components may stick together, causing problems during
mounting.
Avoid contamination of thermistor surface during storage, handling and processing.
Avoid storage of thermistors in harmful environments like corrosive gases (SO
Use the components as soon as possible after opening the factory seals, i.e. the
polyvinyl-sealed packages.
Solder thermistors within the time specified after shipment from EPCOS.
For leaded components this is 24 months, for SMDs 12 months.
NTC thermistors must not be dropped. Chip-offs or any other damage must not be caused
during handling of NTCs.
Do not touch components with bare hands. Gloves are recommended.
Avoid contamination of thermistor surface during handling.
A lead (wire) may be bent at a minimum distance of twice the wire’s diameter plus 4 mm from
the component head or housing. When bending ensure the wire is mechanically relieved at the
component head or housing. The bending radius should be at least 0.75 mm.
Twisting (torsion) by 180 of a lead bent by 90 is permissible at 6 mm from the bottom of the
thermistor body.
Use resin-type flux or non-activated flux.
Insufficient preheating may cause ceramic cracks.
Rapid cooling by dipping in solvent is not recommended.
Complete removal of flux is recommended.
Page 19 of 23
25 C ... +45 C, relative
x
, Cl etc).
B57891M
M891