Littelfuse 464 User Manual

Surface Mount Fuses

NANO2® > 250V UMF > Fast-Acting > 464 Series

464 Series Fuse

PS

E

Description

The Surface Mount Nano2 250V UMF product family
complies with IEC Publication IEC60127-4-Universal
Modular Fuse-Links [UMF]. This IEC standard has been
accepted by UL/CSA making it the first global fuse
standard.

Features

• FastActing

• ListedtoIEC60127-4,

• RoHScompliantand

Halogen Free

Universal Modular

Agency Approvals

Fuse-Links (UMF), 250V

• 250VACVoltagerating

AGENCY AGENCY FILE NUMBER AMPERE RANGE

PS

E

NBK30502-E108480A 1A - 6.3A

E184655A,B 500mA - 6.3A

Applications

• Powersupply

• Lightingsystem

• Industrialequipment

• Medicalequipment

• Whitegoods

Electrical Characteristics for Series

% of Ampere

Rating

125% 1 hour, Minimum

200% 2 minutes, Maximum

1000% 0.001 sec., Min.; 0.01 sec., Max.

Opening Time

Additional Information

Datasheet

Resources

Samples

Electrical Specifications by Item

Ampere

Rating

(A)

0.500 .500 250

0.800 .800 250 0.1159 0.96 400

1. 0 0 0 01. 250 0.0762 0.51 300

1.25 1.25 250 0.0580 0.98 300

1.60 0 1. 6 250 0.0448 1.67 300

2.00 002. 250 0.0354 2.48 300

2.50 02.5 250 0.0288 3.99 300

3.15 3.15 250 0.0206 8.05 300

4.00 004. 250 0.0156 13.85 300

5.00 005. 250 0.0119 23.6 300

6.30 06.3 250 0.0093 53.33 300 x x

Notes:

- l2t calculated at 8ms.

- Resistance is measured at 10% of rated current, 25ºC

- For information and availability of additional ratings please contact Littelfuse

Amp Code

Max

Voltage

Rating

(V)

Interrupting

Rating

100 amperes

@250VAC

Nominal Cold

Resistance

(Ohms)

0.2373 0.22 600 x

Nominal

Melting

2

t (A2sec)

I

Nominal

Voltage Drop

(mV)

Agency Approvals

PS

E

x x
x x
x x
x x
x x
x x
x x
x x

x

© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/19/13

Surface Mount Fuses

1000

A

A

A

A

A

A

TIME IN SECONDS

CURRENT IN AMPERES

A

A

A

NANO2® > 250V vvUMF > Fast-Acting > 464 Series

Temperature Rerating Curve

Note:

1. Derating depicted in this curve is in addition to the standard derating of 15% for
continuous operation.

Average Time Current Curves

2.00

1.60

1.00

1.25

.50 A

100

10

0.1

0.01

0.001

1

0.1

.80 A

1

3.15

2.50

10

4.00

5.00

6.30

100

Soldering Parameters

Reflow Condition Pb – Free assembly

Pre Heat

Average ramp up rate (Liquidus Temp
(T

) to peak

L

T

S(max)

Reflow

Peak Temperature (TP) 260

Time within 5°C of actual peak
Temperature (t

Ramp-down Rate 5°C/second max.

Time 25°C to peak Temperature (T
Do not exceed 260°C

Wave Soldering Parameters

- Temperature Min (T

- Temperature Max (T

) 150°C

s(min)

) 200°C

s(max)

- Time (Min to Max) (ts) 60 – 120 secs

5°C/second max.

to TL - Ramp-up Rate 5°C/second max.

- Temperature (TL) (Liquidus) 217°C

- Temperature (tL) 60 – 90 seconds

+0/–5

°C

)

p

P

20 – 40 seconds

) 8 minutes max.

260°C Peak
Temperature,
10 seconds max.

T

Temperature

S(max)

T

S(min)

T

P

T

L

25

time to peak temperature

Preheat

t

S

(t 25ºC to peak)

Ramp-up

t

P

Critical Zone

T

to T

L

P

t

L

Ramp-down

Time

Specifications are subject to change without notice.

© 2013 Littelfuse, Inc.

Revised: 12/19/13