429.125WRM datasheet(1/1 Pages) BEL

Part #	429.125WRM

Description	Thin-Film Surface Mount

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Manufacturer	BEL [Bel Fuse Inc.]

Direct Link	http://www.belfuse.com

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Thin-Film Surface Mount

364

Surface Mount Fuses

1206 Very Fast-Acting Fuse 429 Series

www .littelfuse .com

Nominal

Catalog

Ampere

Marking

Voltage

Resistance

Melting I

2t

Number

Rating

Code

Rating

Cold Ohms

1

(A

2 Sec.)2

429.125

0.125

FB

125

2.30000

0.00020

429.200

0.200

FC

125

0.93800

0.00055

429.250

0.250

FD

125

0.62500

0.00100

429.375

0.375

FE

125

0.37500

0.00280

429.500

0.500

FF

63

0.24050

0.0060

429.750

0.75

FG

63

0.13700

0.0170

429 001

1.00

FH

63

0.09950

0.035

429 1.25

1.25

FJ

63

0.07475

0.065

429 01.5

1.50

FK

63

0.06250

0.125

429 1.75

1.75

FL

63

0.05000

0.150

429 002

2.0

FN

63

0.03975

0.230

429 02.5

2.5

FO

32

0.03065

0.500

429 003

3.0

FP

32

0.02625

0.700

429 004

4.0

FS

24

0.01926

1.50

429 005

5.0

FT

24

0.01375

2.70

429 007

7.0

FU

24

0.00925

3.60

1

Measured at 10% of rated current, 25°C.

2

Measured at rated voltage.

• For new designs please consult the 433 or 466 Series on pages 258-260.

ELECTRICAL CHARACTERISTICS:

% of Ampere

Opening

Rating

Time at 25°C

100%

4 hours, Minimum

200%

5 seconds, Maximum

300%

0.2 seconds, Maximum

AGENCY APPROVALS: Recognized under the Components Program

of Underwriters Laboratories and Certified by CSA.

AGENCY FILE NUMBERS: UL E10480, CSA LR 29862.

INTERRUPTING RATINGS:

0.125 – 3A

50 amperes at rated voltage, VAC/VDC

4 – 7A

35 amperes at rated voltage, VAC/VDC

ENVIRONMENTAL SPECIFICATIONS:

Operating Temperature: – 55°C to 90°C. Consult temperature rerat-

ing chart on page 4. For operation above 90°C contact Littelfuse.

Vibration: Withstands 10– 55 Hz per MIL-STD-202F,

Method 201A and 10-2000 Hz at 20 G’s per MIL-STD-202F, Method

204D, Condition D.

Insulation Resistance (After Opening): Greater than 10 KOhm.

Resistance to Soldering Heat: Withstands 60 seconds above

200°C up to 260°C, maximum.

Thermal Shock: Withstands 5 cycles of – 55° to 125°C.

PHYSICAL SPECIFICATIONS:

Materials: Body: Epoxy Substrate

Terminations: Copper/Nickel/Tin-Lead (95/5)

Cover Coat: Conformal Coating

Soldering Parameters:

Reflow Solder — 260°C, 30 seconds maximum

PACKAGING SPECIFICATIONS: 8mm Tape and Reel per

EIA-RS481-1 (IEC 286, part 3); 3,000 per reel, add packaging suffix, WR.

PATENTED

ORDERING INFORMATION:

CURRENT IN AMPERES

0.01

0.1

1

10

100

10

100

0.001

Average Time Current Curves

REFLOW SOLDER

RECOMMENDED PAD LAYOUTS

3.81

(.150")

1.52

(.060")

2.03

(.080")

.635

(.025")

1.14

(.045")

2.49 (.098")

REF.

1.52

(.060")

3.18

(.125")

1.14

(.045")

1.12

(.044")

REF.

®

For New Designs Use 433 or 466 Series.

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