Inrush Current Limiters (ICL)

Manufacturer Series Packaging Product Status R @ 25°C Tolerance Current - Steady State Max R @ Current Diameter Lead Spacing Grade Qualification Approval Agency

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Inrush Current Limiters (ICL)

Inrush Current Limiters (ICL) are circuit protection components used to reduce high startup current when electronic equipment is first powered on. They help protect power supplies, rectifiers, capacitors, switches and downstream circuits from excessive current stress. They are widely used in power adapters, industrial power supplies, motor drives, chargers, LED lighting, consumer electronics, automation equipment and embedded systems.

This category includes NTC inrush current limiters, thermistor-based ICL components, power supply inrush limiters, motor startup current limiters and related overcurrent protection devices. These components are commonly selected based on resistance value, maximum steady-state current, energy rating, operating temperature, response behavior, package type and application requirements.

TomatoElec supplies original Inrush Current Limiters from recognized manufacturers such as TDK, EPCOS, Vishay, Murata, Amphenol, Ametherm, Littelfuse, Bourns, Panasonic and other major brands. As an in-stock electronic components supplier and independent distributor, TomatoElec provides inventory support, original component sourcing and BOM sourcing services for global customers.

Photo Mfr. Part # Availability Price Quantity Datasheet Series Packaging Product Status R @ 25°C Tolerance Current - Steady State Max R @ Current Diameter Lead Spacing Grade Qualification Approval Agency
SL32 0R540-B

SL32 0R540-B

ICL 500 MOHM 20% 40A 30MM

Ametherm

7,143 -
RFQ
SL32 0R540-B

Datasheet

BigAMP Bulk Active 500 mOhms ±20% 40 A 8 mOhms 1.181" (30.00mm) 0.307" (7.80mm) - - -
SG326

SG326

ICL 500 MOHM 20% 30A 31.75MM

Ametherm

8,009 -
RFQ
SG326

Datasheet

SURGE-GARD™ Bulk Active 500 mOhms ±20% 30 A 10 mOhms 1.250" (31.75mm) 0.350" (8.89mm) - - CSA, UR
ST1R020B

ST1R020B

ICL 1 OHM 15% 20A 30.5MM

Littelfuse Inc.

8,617 -
RFQ
ST1R020B

Datasheet

ST Bulk Obsolete 1 Ohms ±15% 20 A 15 mOhms 1.201" (30.50mm) 0.310" (7.87mm) - - -
SG355

SG355

ICL 2 OHM 25% 23A 31.75MM

Ametherm

9,057 -
RFQ
SG355

Datasheet

SURGE-GARD™ Bulk Active 2 Ohms ±25% 23 A 25 mOhms 1.250" (31.75mm) 0.350" (8.89mm) - - CSA, UR
MS22 12102-B

MS22 12102-B

ICL 120 OHM 25% 2A 23MM

Ametherm

9,434 -
RFQ
MS22 12102-B

Datasheet

MegaSurge™ Bulk Active 120 Ohms ±25% 2 A 1.78 Ohms 0.906" (23.00mm) 0.307" (7.80mm) - - -
MS22 22103-B

MS22 22103-B

ICL 220 OHM 25% 3.5A 23MM

Ametherm

2,000 -
RFQ
MS22 22103-B

Datasheet

MegaSurge™ Bulk Active 220 Ohms ±25% 3.5 A 1.4 Ohms 0.906" (23.00mm) 0.307" (7.80mm) - - -
MS22 30005-B

MS22 30005-B

ICL 30 OHM 20% 5A 23MM

Ametherm

3,700 -
RFQ
MS22 30005-B

Datasheet

MegaSurge™ Bulk Active 30 Ohms ±20% 5 A 230 mOhms 0.906" (23.00mm) 0.307" (7.80mm) - - -
CL-90A

CL-90A

ICL 120 OHM 25% 2A 23.62MM

Amphenol Advanced Sensors (Thermometrics)

16 -
RFQ
CL-90A

Datasheet

CL Bulk Active 120 Ohms ±25% 2 A 1.18 Ohms 0.930" (23.62mm) 0.328" (8.33mm) - - UL
ST2R018B

ST2R018B

ICL 2 OHM 20% 18A 30.5MM

Littelfuse Inc.

2,502 -
RFQ
ST2R018B

Datasheet

ST Bulk Obsolete 2 Ohms ±20% 18 A 30 mOhms 1.201" (30.50mm) 0.310" (7.87mm) - - -
ICL221R020-01

ICL221R020-01

ICL 1 OHM 20% 20A 22MM

Honeywell Sensing and Productivity Solutions

7,407 -
RFQ
ICL221R020-01

Datasheet

- Bulk Obsolete 1 Ohms ±20% 20 A 20 mOhms 0.866" (22.00mm) 0.310" (7.87mm) - - -
ST1R030B

ST1R030B

ICL 1 OHM 20% 30A 37.47MM

Littelfuse Inc.

3,531 -
RFQ
ST1R030B

Datasheet

ST Bulk Obsolete 1 Ohms ±20% 30 A 15 mOhms 1.475" (37.47mm) 0.310" (7.87mm) - - -
ST10010B

ST10010B

ICL 10 OHM 20% 10A 37.47MM

Littelfuse Inc.

9,434 -
RFQ
ST10010B

Datasheet

ST Bulk Obsolete 10 Ohms ±20% 10 A 100 mOhms 1.475" (37.47mm) 0.310" (7.87mm) - - -
MS22 50004-A

MS22 50004-A

ICL 50 OHM 25% 4A 23MM

Ametherm

2,577 -
RFQ
MS22 50004-A

Datasheet

MegaSurge™ Bulk Active 50 Ohms ±25% 4 A 360 mOhms 0.906" (23.00mm) 0.307" (7.80mm) - - -
MS22 10008-A

MS22 10008-A

ICL 10 OHM 25% 8A 23MM

Ametherm

6,585 -
RFQ
MS22 10008-A

Datasheet

MegaSurge™ Bulk Active 10 Ohms ±25% 8 A 90 mOhms 0.906" (23.00mm) 0.307" (7.80mm) - - -
MS22 12103-A

MS22 12103-A

ICL 120 OHM 25% 3A 23MM

Ametherm

7,192 -
RFQ
MS22 12103-A

Datasheet

MegaSurge™ Bulk Active 120 Ohms ±25% 3 A 1.28 Ohms 0.906" (23.00mm) 0.307" (7.80mm) - - UR
MS22 12104-A

MS22 12104-A

ICL 120 OHM 25% 4A 23MM

Ametherm

6,207 -
RFQ
MS22 12104-A

Datasheet

MegaSurge™ Bulk Active 120 Ohms ±25% 4 A 750 mOhms 0.906" (23.00mm) 0.307" (7.80mm) - - -
MS22 20005-A

MS22 20005-A

ICL 20 OHM 25% 5A 23MM

Ametherm

7,460 -
RFQ
MS22 20005-A

Datasheet

MegaSurge™ Bulk Active 20 Ohms ±25% 5 A 190 mOhms 0.906" (23.00mm) 0.307" (7.80mm) - - -
MS22 22103-A

MS22 22103-A

ICL 220 OHM 25% 3.5A 23MM

Ametherm

8,677 -
RFQ
MS22 22103-A

Datasheet

MegaSurge™ Bulk Active 220 Ohms ±25% 3.5 A 1.4 Ohms 0.906" (23.00mm) 0.307" (7.80mm) - - -
MS22 30005-A

MS22 30005-A

ICL 30 OHM 20% 5A 23MM

Ametherm

3,008 -
RFQ
MS22 30005-A

Datasheet

MegaSurge™ Bulk Active 30 Ohms ±20% 5 A 230 mOhms 0.906" (23.00mm) 0.307" (7.80mm) - - -
MS22 75004-A

MS22 75004-A

ICL 75 OHM 25% 4A 23MM

Ametherm

3,008 -
RFQ
MS22 75004-A

Datasheet

MegaSurge™ Bulk Active 75 Ohms ±25% 4 A 410 mOhms 0.906" (23.00mm) 0.307" (7.80mm) - - -
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