NTC Thermistors
Surge Current Limiters
ADVANCED THERMAL PRODUCTS, Inc.
Description:
ATP Surge Current Limiters are a cost-effective way of
limiting the inrush of current that can damage components
in switching power supplies or other electronic devices.
These specially formulated NTC Thermistors have an ini-
tial high resistance that can limit current surge for up to
several seconds. During this time, the heat generated within
the device causes the resistance to decrease to a very low
level. The resulting voltage drop across the Surge Current
Limiter is negligible.
Surge Current Limiters are available in standard configura-
tions, with a wide range of resistance and current carrying
capabilities to fit your needs. They also can be custom
designed to meet a variety of resistance, tolerance, size, lead
configuration, and custom package specifications.
ATP Surge Current Limiters
Maximum
Steady
State
Current
(Amperes)
Resistance@
Max
Steady
State
Current
(Ohms)
0.01
0.02
0.02
0.02
0.05
0.03
0.07
0.04
0.03
0.07
0.25
0.17
0.15
0.10
0.07
0.06
0.16
0.30
0.20
0.21
0.20
0.15
0.40
0.27
0.50
0.40
0.50
0.72
1.18
0.80
Type
Number
R@25
(Ω)
"D"
Maximum
Coated Diameter
"T"
Maximum
Coated Thickness
Lead Diameter
(mm)
SCL32
SCL22
SCL22
SCL32
SCL10
SCL22
SCL15
SCL15
SCL22
SCL15
SCL10
SCL12
SCL15
SCL15
SCL15
SCL22
SCL22
SCL10
SCL10
SCL15
SCL22
SCL15
SCL12
SCL15
SCL12
SCL15
SCL15
SCL12
SCL15
SCL15
0R530
0R712
1R020
1R030
1R308
2R018
2R508
2R509
2R515
4R008
5R003
5R004
5R005
5R006
5R007
5R012
7R005
10002
10003
10004
10005
10006
16003
16004
20002
25003
47003
50002
12102
22102
0.5
0.7
1
1
1.3
2
2.5
2.5
2.5
4
5
5
5
5
5
5
7
10
10
10
10
10
16
16
20
25
47
50
120
220
30
12
20
30
8
18
8
9
15
8
2.8
4
5
6
7
12
5
2
3
4
5
6
2.7
4
2
3
3
2
2
2
32.00
22.00
22.00
32.00
9.50
22.00
15.00
15.00
22.00
15.00
9.50
11.50
15.00
15.00
15.00
22.00
22.00
9.50
9.50
15.00
22.00
15.00
11.50
15.00
11.50
15.00
15.00
11.50
15.00
15.00
(inches)
1.260
0.866
0.866
1.260
0.374
0.866
0.591
0.591
0.866
0.591
0.374
0.453
0.591
0.591
0.591
0.866
0.866
0.374
0.374
0.591
0.866
0.591
0.453
0.591
0.453
0.591
0.591
0.453
0.591
0.591
(mm)
8
6
6
6
5
6
6
6
6
6
5
5
6
6
6
6
6
5
5
6
6
6
5
6
5
6
6
5
6
5
(inches)
0.327
0.245
0.245
0.245
0.204
0.245
0.245
0.245
0.245
0.245
0.204
0.204
0.245
0.245
0.245
0.245
0.245
0.204
0.204
0.245
0.245
0.245
0.204
0.245
0.204
0.245
0.245
0.204
0.245
0.204
(mm)
1.0
1.0
1.0
1.0
0.8
1.0
0.8
0.8
1.0
0.8
0.8
0.8
0.8
0.8
0.8
1.0
1.0
0.8
0.8
0.8
1.0
0.8
0.8
0.8
1.0
0.8
0.8
0.8
0.8
0.8
(inches)
0.040
0.040
0.040
0.040
0.032
0.040
0.032
0.032
0.040
0.032
0.032
0.032
0.032
0.032
0.032
0.032
0.040
0.040
0.032
0.032
0.032
0.040
0.032
0.032
0.032
0.032
0.032
0.032
0.032
0.032
50
Advanced Thermal Products, Inc. • P.O. Box 249 • 328 Ridgway Road • St. Marys, PA 15857 • Phone: 814-834-1541
Fax: 814-834-1556 • E-mail: sales@atpsensor.com • Web Site: www.atpsensor.com
NTC Thermistors
Surge Current Limiters
ADVANCED THERMAL PRODUCTS, Inc.
Features:
Resistance @ 25˚ C,
±
20% ............. 0.5 to 220 ohms
Maximum Steady State Current ...... 2 to 30 amperes
Resistance at Maximum
Steady State Current ........................ 0.01 to 1.18 ohms
Operating Temperature .................... -40˚ to +185˚C
Storage Temperature ....................... -40˚ to +220˚C
Surge Current Life ........................... -15%, +10% Maximum
v
R @25˚C
Load Life ......................................... -15%, +10% Maximum
v
R @25˚C
Temperature Cycle .......................... -15%, +10% Maximum
v
R @25˚C
Moisture Resistance ......................... -15%, +10% Maximum
v
R @25˚C
Lead Pull Strength ........................... 1 kg, applied in axial direction
Solderability of Leads ...................... More than 95%
Soldering Heat Resistance ............... -15%, +10% Maximum
v
R @25˚C
Construction .................................... Straight or kinked tinned copper leads
Coating ............................................ Black silicone or epoxy
Physical Dimensions
Maximum Diameter ......................... 9.5 mm (0.374") to 32.0 mm (1.260")
Maximum Thickness ....................... 5.0 mm (0.204") to 8.0 mm (0.327")
Lead Diameter ................................. 0.8 mm (0.032") to 1.0 mm (0.040")
T
1.5"
MIN.
D
0.310"
NOM.
0.10"
NOM.
Advanced Thermal Products, Inc. • P.O. Box 249 • 328 Ridgway Road • St. Marys, PA 15857 • Phone: 814-834-1541
Fax: 814-834-1556 • E-mail: sales@atpsensor.com • Web Site: www.atpsensor.com
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