Surge Current Limiters

Description

Spectrum Sensors & Controls 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 initial 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 configurations, 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.

Features

Resistance @ 25º 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	-40º to +185ºC
Storage Temperature	-40º to +220ºC
Surge Current Life	-15%, +10% Maximum ΔR @25ºC
Load Life	-15%, +10% Maximum ΔR @25ºC
Temperature Cycle	-15%, +10% Maximum ΔR @25ºC
Moisture Resistance	-15%, +10% Maximum ΔR @25ºC
Lead Pull Strength	1 kg, applied in axial direction
Solderability of Leads	More than 95%
Soldering Heat Resistance	-15%, +10% Maximum ΔR @25ºC
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")

Customize
This Limiter!

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[

Surge Current Limiter Datasheet (213K) ]

[

Create a Custom Surge Current
Limiter Solution ]

Surge Current Limiter Product Information
Type Number	R@25 (Ω)	Maximum Steady State Current (Amperes)	Customize Solution	"D" Maximum Coated Diameter		"T" Maximum Coated Thickness		Lead Diameter
Type Number	R@25 (Ω)	Maximum Steady State Current (Amperes)	Customize Solution	(mm)	(inches)	(mm)	(inches)	(mm)	(inches)
SCL32 0R530	0.5	30		32.00	1.260	8	0.327	1.0	0.040
SCL22 0R712	0.7	12		22.00	0.866	6	0.245	1.0	0.040
SCL22 1R020	1	20		22.00	0.866	6	0.245	1.0	0.040
SCL32 1R030	1	30		32.00	1.260	6	0.245	1.0	0.040
SCL10 1R308	1.3	8		9.50	0.374	6	0.204	0.8	0.032
SCL22 2R018	2	18		22.00	0.866	5	0.245	1.0	0.040
SCL15 2R508	2.5	8		15.00	0.591	6	0.245	0.8	0.032
SCL15 2R509	2.5	9		15.00	0.591	6	0.245	0.8	0.032
SCL22 2R515	2.5	15		22.00	0.866	6	0.245	1.0	0.040
SCL15 4R008	4	8		15.00	0.591	6	0.245	0.8	0.032
SCL10 5R003	5	2.8		9.50	0.374	6	0.204	0.8	0.032
SCL12 5R004	5	4		11.50	0.453	5	0.204	0.8	0.032
SCL15 5R005	5	5		15.00	0.591	5	0.245	0.8	0.032
SCL15 5R006	5	6		15.00	0.591	6	0.245	0.8	0.032
SCL15 5R007	5	7		15.00	0.591	6	0.245	0.8	0.032
SCL22 5R012	5	12		22.00	0.866	6	0.245	1.0	0.032
SCL22 7R005	7	5		22.00	0.866	6	0.245	1.0	0.040
SCL10 10002	10	2		9.50	0.374	6	0.204	0.8	0.040
SCL10 10003	10	3		9.50	0.374	5	0.204	0.8	0.032
SCL15 10004	10	4		15.00	0.591	5	0.245	0.8	0.032
SCL22 10005	10	5		22.00	0.866	6	0.245	1.0	0.032
SCL15 10006	10	6		15.00	0.591	6	0.245	0.8	0.040
SCL12 16003	16	2.7		11.50	0.453	5	0.204	0.8	0.032
SCL15 16004	16	4		15.00	0.591	6	0.245	0.8	0.032
SCL12 20002	20	2		11.50	0.453	5	0.204	1.0	0.032
SCL15 25003	25	3		15.00	0.591	6	0.245	0.8	0.032
SCL15 47003	47	3		15.00	0.591	6	0.245	0.8	0.032
SCL12 50002	50	2		11.50	0.453	5	0.204	0.8	0.032
SCL15 12102	120	2		15.00	0.591	6	0.245	0.8	0.032
SCL15 22102	220	2		15.00	0.591	5	0.204	0.8	0.032