PTC thermistors for degaussing
Double mono PTC thermistors
Series/Type:
B59***
Date:
March 2006
EPCOS AG 2006. Reproduction, publication and dissemination of this publication, enclosures hereto and the
information contained therein without EPCOS' prior express consent is prohibited.
Applications
Degaussing of picture tubes
Features
Two PTC thermistors in a plastic case
(3-pin)
Marked with manufacturer's logo, type
designation and date code
Flame-retardant case material (UL 94 V-0)
Solderability to IEC 60068-2-20 (test t
a
,
methode 1)
Stable performance throughout a large
number of switching cycles owing to clamp
contacting
UL approval to UL 1434 (file number
E69802) (except T205)
VDE approval for T890 (license number
128911)
CECC 60738-1-3-001 approval for T890
RoHS-compatible
Delivery mode
Packed in blister trays
Dimensional drawings
Thermoplast housing for type: T205
Phenolic resin (Duroplast) housing for type:
T845 and T890
Circuit diagram and hole arrangement
Circuit diagram
Hole arrangement
Degaussing
Double mono PTC thermistors
Page 2 of 8
Please read Important notes and
Cautions and warnings at the end of this document.
1) T: Thermoplast housing; D: Phenolic resin (Duroplast) housing
2) SD: Standard decay behavior; LD: Long decay behavior
General technical data
Max. operating voltage
V
max
270
VAC
Rated voltage
V
R
230
VAC
Operating temperature range
(V = 0)
T
op
25/+125
C
Operating temperature range
(V = V
R
)
T
op
0/+60
C
Electrical specifications and ordering codes
Type
R
R
R
coil
I
in,coil
(0 s)
A
pp
I
r,coil
(180 s) (V = V
R
,
25
C
T
op
60
C)
mA
pp
Hous-
sing
1)
De-
cay
2)
Ordering code
T845
2.25 (2 x 4.5)
10.0
48
50
D
-
B59845T0060B110
T205
4.5 (2 x 9)
9.25
44
40
T
SD
B59205T0080B110
T890
4.5 (2 x 9)
10
40
50
D
LD
B59890T0060B110
Note for all types:
A single degaussing coil may be replaced by two coils in parallel.
E.g. a single coil of 10
can be replaced by two 20
coils in parallel,
one conected to terminal A the other to terminal C.
Degaussing
Double mono PTC thermistors
Page 3 of 8
Please read Important notes and
Cautions and warnings at the end of this document.
Reliability data
Test
Standard
Test conditions
R
25
/R
25
Electrical endurance,
cycling
IEC 60738-1
Room temperature, V
max;
R
S
Number of cycles: 10 000
< 20%
Electrical endurance,
constant
IEC 60738-1
Storage at V
max
/T
op
Test duration : 1000 h
< 20%
Damp heat
IEC 60738-1
Temperature of air: 40
C
Relative humidity of air: 93%
Duration: 56 days
Test according to IEC 60068-2-78
< 20%
Rapid change
of temperature
IEC 60738-1
T = T
LCT
, T = T
UCT
Number of cycles: 5
Test duration: 30 min
Test according to IEC 60068-2-14, Test Na
< 20%
Vibration
IEC 60738-1
Frequency: 10 - 55 - 10 Hz
Displacement amplitude: 0.75 mm
Test duration: 3 2 h
Test according to IEC 60028-2-6, Test Fc
< 20%
Bump
IEC 60738-1
Pulse shape: half-sine
Acceleration: 40 g
Pulse duration: 6 ms; 6 4000 pulses
Test according to IEC 60068-2-29
< 20%
Climatic sequence
IEC 60738-1
Dry heat: T = T
UCT
Test duration: 16 h
Damp heat first cycle
Cold: T = T
LCT
Test duration: 2 h
Damp heat 5 cycles
Tests performed according to
IEC 60068-2-30
< 20%
Degaussing
Double mono PTC thermistors
Page 4 of 8
Please read Important notes and
Cautions and warnings at the end of this document.
Characteristics
Typical curve of demagnetization current I
in,coil
measured at V
R
Coil resistance: 10
(T845 and T890), 9.25
(T205)
Ambient temperature: 25
C
Degaussing
Double mono PTC thermistors
Page 5 of 8
Please read Important notes and
Cautions and warnings at the end of this document.
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