Littelfuse 203 User Manual

203 Series Fuse

Surface Mount Fuses

FLAT-PAK® Slo-Blo® Fuse > 203 Series

Description

Fast-Acting and Slo-Blo
designs are available. Both designs are available in either a
gull-wing surface mount package or a DIP configuration for
through-hole mounting. These fuse designs feature a 250
VAC rating in a low profile, rectangular package.

®

Fuse versions of the Flat-Pak Fuse

Agency Approvals

AGENCY

AGENCY FILE

NUMBER

E10480 1/4mA - 5A

LR29862 1/4mA - 5A

AMPERE RANGE

Additional Information

Datasheet

Resources

Electrical Characteristics for Series

% of Ampere

Rating

100% 4 hours, Minimum

200% 1 second, Min; 30 seconds Max.

Opening Time

Electrical Specifications by Item

Ampere

Rating

(A)

0.25 .250 250

0.50 .500 250 0.433 0.112 x x

0.75 .750 250 0.158 0.327 x x

1. 0 0 0 01. 250 0.0755 0.328 x x

1.50 01. 5 250 0.0390 0.850 x x

2.00 002. 250 0.0345 1.70 x x

2.50 02.5 250 0.0237 2.87 x x

3.00 003. 250 0.0197 4.40 x x

4.00 004. 250 0.0148 8.75 x x

5.00 005. 250 0.0124 14.7 x x

Amp Code

Max

Voltage

Rating

(V)

Interrupting

Rating

50 amperes

@250 VAC

Nominal Cold

Resistance

(Ohms)

1.36 0.0126 x x

Nominal Melting

2

t (A2sec)

I

Agency Approvals

Samples

Specifications are subject to change without notice.

© 2013 Littelfuse, Inc.

Revised: 12/19/13

Surface Mount Fuses

000

1 1/2A

2 1/2A

TIME IN SECONDS

CURRENT IN AMPERES

0203 002.

HXG

Series

Amp Code

Quantity Code

URG = 500

0203 002.

H

Series

Amp Code

Quantity Code

H = 100

FLAT-PAK® Slo-Blo® Fuse > 203 Series

Temperature Rerating Curve

Note:

1. Derating depicted in this curve is in addition to the standard derating of 25% for
continuous operation.

Soldering Parameters

Wave Soldering 260°C, 3 seconds max.

Reflow Soldering 215°C, 30 seconds max.

Average Time Current Curves

1/4A

1/2A

3/4A

1A

100

10

1

.1

0.01

0.001

2 A

3A4A5A

1001010.10.05

1

Dimensions

202 FLAT- PAK

F 2A

F

L

250 V

PAT 4563666

9.45

(.372")

.135"

o

6

10.16

(.400")

0.30 (.012")

DIP Configuration

(Thru-Hole) Mounting

Packaging

Packaging

Option

Surface Mount Fuses

Bulk – 10 0 HXG

24mm Tape

and Reel

Through Hole Fuses

Antistatic
Magazine

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

Packaging

Specification

(IEC60286, part 3)

202G FLAT- PAK

F 2A

F

L

250 V

PAT 4563666

6.35

(.250")

0.53

(.021")

2.79 (.110)

EIA 481

4.19

(.165")

("Gull Wing" Surface Mount)

Recommended Pad Layout

9.45

(.372")

0.08 (.003")

1.40 (.055")

15.24 (.600")

SMF Configuration

17.12 (.674)

4.06 (.160)

11.53 (.454)

Quantity

Packaging Code

500 URG

– 10 0 H

6.35

(.250")

1.52

(.060")

Quantity &

4.19

(.165")

Product Characteristics

Materials

Solderability MIL-STD-202, Method 208.

Cleaning Board washable in most common solvents.

Operating
Temperature

Body: Thermoplastic
Terminations: Tin/Lead Plated Copper

O

C to 125OC

–55

Part Numbering System

Surface Mount Fuses: Through Hole Fuses:

Refer to Amp Code column of
Electrical Characteristics Table

HXG = 100

Refer to Amp Code column of
Electrical Characteristics Table