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RKEF250

RKEF250

For Reference Only

Part Number RKEF250
PNEDA Part # RKEF250
Description PTC RESET FUSE 60V 2.5A RADIAL
Manufacturer Littelfuse
Unit Price Request a Quote
In Stock 54,096
Warehouses Shipped from Hong Kong SAR
Estimated Delivery May 18 - May 23 (Choose Expedited Shipping)
Guarantee Up to 1 year [PNEDA-Warranty]*

RKEF250 Resources

Brand Littelfuse
ECAD Module ECAD
Mfr. Part NumberRKEF250
CategoryPowerCircuit ProtectionPTC Resettable Fuses
Datasheet
RKEF250, RKEF250 Datasheet (Total Pages: 7, Size: 681.86 KB)
PDFRKEF110K Datasheet Cover
RKEF110K Datasheet Page 2 RKEF110K Datasheet Page 3 RKEF110K Datasheet Page 4 RKEF110K Datasheet Page 5 RKEF110K Datasheet Page 6 RKEF110K Datasheet Page 7

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RKEF250 Specifications

ManufacturerLittelfuse Inc.
SeriesPolySwitch®, RKEF
TypePolymeric
Voltage - Max60V
Current - Max40A
Current - Hold (Ih) (Max)2.5A
Current - Trip (It)5A
Time to Trip15.6s
Resistance - Initial (Ri) (Min)40 mOhms
Resistance - Post Trip (R1) (Max)140 mOhms
Resistance - 25°C (Typ)-
Operating Temperature-40°C ~ 85°C
Ratings-
Mounting TypeThrough Hole
Package / CaseRadial, Disc
Size / Dimension0.512" L x 0.150" W (13.00mm x 3.81mm)
Height - Seated (Max)0.740" (18.80mm)
Thickness (Max)-
Lead Spacing0.200" (5.08mm)

The Products You May Be Interested In

Manufacturer

Bourns Inc.

Series

Multifuse®, MF-R/600

Type

Polymeric

Voltage - Max

250V (600V Int)

Current - Max

3A

Current - Hold (Ih) (Max)

160mA

Current - Trip (It)

320mA

Time to Trip

7s

Resistance - Initial (Ri) (Min)

4 Ohms

Resistance - Post Trip (R1) (Max)

17 Ohms

Resistance - 25°C (Typ)

-

Operating Temperature

-40°C ~ 85°C

Ratings

-

Mounting Type

Through Hole

Package / Case

Radial, Box

Size / Dimension

0.630" L x 0.236" W (16.00mm x 6.00mm)

Height - Seated (Max)

0.496" (12.60mm)

Thickness (Max)

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Lead Spacing

0.197" (5.00mm)

72R040XPR

Littelfuse

Manufacturer

Littelfuse Inc.

Series

POLY-FUSE®, 72R

Type

Polymeric

Voltage - Max

72V

Current - Max

40A

Current - Hold (Ih) (Max)

400mA

Current - Trip (It)

800mA

Time to Trip

3.8s

Resistance - Initial (Ri) (Min)

550 mOhms

Resistance - Post Trip (R1) (Max)

1.29 Ohms

Resistance - 25°C (Typ)

-

Operating Temperature

-40°C ~ 85°C

Ratings

-

Mounting Type

Through Hole

Package / Case

Radial, Disc

Size / Dimension

0.299" Dia x 0.122" T (7.60mm x 3.10mm)

Height - Seated (Max)

0.532" (13.50mm)

Thickness (Max)

-

Lead Spacing

0.201" (5.10mm)

PFRY.375

Schurter

Manufacturer

Schurter Inc.

Series

PFRY

Type

Polymeric

Voltage - Max

72V

Current - Max

40A

Current - Hold (Ih) (Max)

3.75A

Current - Trip (It)

7.5A

Time to Trip

24s

Resistance - Initial (Ri) (Min)

30 mOhms

Resistance - Post Trip (R1) (Max)

80 mOhms

Resistance - 25°C (Typ)

-

Operating Temperature

-40°C ~ 85°C

Ratings

-

Mounting Type

Through Hole

Package / Case

Radial, Disc

Size / Dimension

0.926" L x 0.118" W (23.51mm x 3.00mm)

Height - Seated (Max)

1.165" (29.60mm)

Thickness (Max)

-

Lead Spacing

0.402" (10.20mm)

RGEF1200

Littelfuse

Manufacturer

Littelfuse Inc.

Series

PolySwitch®, RGEF

Type

Polymeric

Voltage - Max

16V

Current - Max

100A

Current - Hold (Ih) (Max)

12A

Current - Trip (It)

20.4A

Time to Trip

7.5s

Resistance - Initial (Ri) (Min)

3.3 mOhms

Resistance - Post Trip (R1) (Max)

8.6 mOhms

Resistance - 25°C (Typ)

-

Operating Temperature

-40°C ~ 85°C

Ratings

-

Mounting Type

Through Hole

Package / Case

Radial, Disc

Size / Dimension

0.670" L x 0.115" W (16.95mm x 2.90mm)

Height - Seated (Max)

1.102" (28.00mm)

Thickness (Max)

-

Lead Spacing

0.400" (10.15mm)

CMF-RL50-0

Bourns

Manufacturer

Bourns Inc.

Series

CMF-RL

Type

Ceramic

Voltage - Max

220V (600V Int)

Current - Max

3A

Current - Hold (Ih) (Max)

65mA

Current - Trip (It)

150mA

Time to Trip

150ms

Resistance - Initial (Ri) (Min)

-

Resistance - Post Trip (R1) (Max)

-

Resistance - 25°C (Typ)

50 Ohms

Operating Temperature

-40°C ~ 125°C

Ratings

-

Mounting Type

Through Hole

Package / Case

Radial, Disc

Size / Dimension

0.386" L x 0.197" W (9.80mm x 5.00mm)

Height - Seated (Max)

0.532" (13.50mm)

Thickness (Max)

-

Lead Spacing

0.200" (5.08mm)

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