ST2R510B [LITTELFUSE]
Power Thermistors Inrush Current Limiting Power Thermistor;
| 型号： | ST2R510B |
| 厂家： | 
LITTELFUSE |
| 描述： | Power Thermistors Inrush Current Limiting Power Thermistor |
| 文件： | 总3页 (文件大小：685K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Power Thermistors
Inrush Current Limiting Power Thermistor
ST Series Inrush Current Limiters
Description
Littelfuse inrush current limiters (power thermistors) are specially
formulated and processed NTC thermistors suitable for
suppressing high inrush currents in switching power supplies and
other applications where the high initial starting currents are
undesirable. Their unique design enables them to handle extremely
high current and voltage levels. In a typical power supply
application, the inrush current limiting power thermistor is used in
series with the filter capacitors. Upon application of the initial
voltage, the device, due to its relatively high resistance, limits the
current flow to an acceptable level until the capacitors are charged.
Thereafter, the device decreases in resistance substantially to a
level where the voltage drop across it is negligible.
Part Numbering System
Dimensions
ST 10 0 01 B
Series
No Significance
B
D
Resistance @ 25ºC
Max. Steady State
Current (A)
Base Value
C
A
Multiplier, power of 10
TINNED SOLDERABLE WIRE
SEE CHART FOR LEAD DIAMETER
PROTECTIVE
COATING
Note: Not all combinations of Part Number codes are available. Contact Littelfuse for details.
Dimensions shown in inches.
A
B
C
D
0.310”
Max
0.700”
Min
See Dim
“D”
See Dim
“T”
© 2018 Littelfuse, Inc. Revised: February 26, 2018
Specifications are subject to change without notice.
littelfuse.com
1
Power Thermistors
Inrush Current Limiting Power Thermistor
ST Series Inrush Current Limiters
Specifications
Resistance
Ohms
@25°C
*Resistance
Tol.
Imax Max. Steady
State Current IMAX
(A)
Nominal Resistance
@ Max. Current,
RImax (Ohms)
RImax Resis.
@ Max.
Current Ohms
Lead Diameter
Nominal
Part
ꢀ
Number
@ 25°C
25
30
15
(Inch)
ST0R713B
ST1R005B
ST1R020B
ST1R030B
ST1R508B
ST2R018B
ST2R503B
ST2R507B
ST2R509B
ST2R510B
ST10001B
ST10003B
ST10005B
ST10006B
ST10010B
ST12001B
ST15004C
ST16002D
ST20001C
ST20002B
ST25002C
ST20100B
0.7
1
13
5
0.025
0.040
0.030
0.050
0.040
0.135
0.070
0.070
0.060
0.200
0.090
0.015
0.015
0.600
0.030
0.150
0.050
0.040
0.110
0.400
0.100
0.170
0.025
0.09
0.015
0.015
0.6
0.04
0.024
0.04
1
20
30
8
1
25
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
0.04
1.5
2
0.032
0.04
18
3
0.03
0.15
0.05
0.04
0.04
0.65
0.2
2.5
2.5
2.5
2.5
10
10
10
10
10
12
15
16
20
20
25
200
0.032
0.032
0.032
0.04
7
9
10
1
0.024
0.032
0.04
3
5
0.2
6
0.15
0.1
0.04
10
1
0.04
1.19
0.25
0.47
1
0.032
0.032
0.032
0.024
0.032
0.032
0.018
4
2
0.3
1.75
2
0.6
0.64
6.3
0.1
*Resistance tolerances of 1ꢀ, 2ꢀ, and 5ꢀ are available upon request
© 2018 Littelfuse, Inc. Revised: February 26, 2018
littelfuse.com
2
Specifications are subject to change without notice.
Power Thermistors
Inrush Current Limiting Power Thermistor
ST Series Inrush Current Limiters
Specifications
Resistance
*Resistance
Tol.
Imax Max.
Steady State
Current IMAX (A)
Nominal Resistance
@ Max. Current,
RImax (Ohms)
RImax Resis.
@ Max.
Temperature
Coefficient
Lead Diameter Temperature
Part
Ohms
ꢀ
Nominal
(Inch)
Rating
(ºC)
Number
@25°C
@ 25°C
25
30
15
Current Ohms
(ꢀ / °C) @ 25°C
ST2R515B
ST4R005B
ST5R002B
ST5R004B
ST5R005B
ST7R004B
ST8R001B
ST8R003B
ST8R006B
ST30002B
ST30003B
ST33001B
ST33001C
ST33001D
ST3R008B
ST3R017B
ST40002B
ST5R006B
ST5R007B
ST5R014B
ST5R008B
0.7
1
13
5
0.500
0.250
0.470
1.000
0.600
1.075
0.740
1.485
_
0.025
0.09
0.015
0.015
0.6
_
_
0.04
0.024
0.04
_
_
1
20
30
8
_
_
1
25
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
_
0.04
_
1.5
2
_
0.032
0.04
_
18
3
0.03
0.15
0.05
0.04
0.65
0.2
_
_
2.5
2.5
2.5
10
10
10
10
10
12
15
16
20
20
25
200
_
0.032
0.032
0.032
0.024
0.032
0.04
_
7
_
_
9
-4.4
_
+300 (Max)
1
0.280
0.135
0.650
0.200
0.200
0.150
0.100
1.190
6.300
0.640
0.460
0.700
_
_
_
_
_
_
_
_
_
_
_
_
3
_
5
0.2
_
6
0.15
0.1
_
0.04
10
1
_
0.04
1.19
0.25
0.47
1
_
0.032
0.032
0.032
0.024
0.032
0.032
0.018
4
_
2
_
0.3
1.75
2
_
0.6
_
0.64
6.3
_
0.1
_
* Resistance tolerances of 1ꢀ, 2ꢀ, and 5ꢀ are available upon request
Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each
product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at:
www.littelfuse.com/disclaimer-electronics
© 2018 Littelfuse, Inc. Revised: February 26, 2018
littelfuse.com
3
Specifications are subject to change without notice.
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