370

Surface Mount Fuses

www .littelfuse .com

Lead-Free Thin-Film

SlimLine

®

®

• Product is compatible with lead-free solders and higher

temperature profiles.

• High performance materials provide improved performance in elevated

ambient temperature applications.

• Product is marked on top surface with code to allow amperage rating

identification without testing.

• Low profile for height sensitive applications.

• Flat top surface for pick-and-place operations.

• Element covering material is resistant to industry standard

cleaning operations.

• Mounting pad and electrical performance is identical to Littelfuse 431

and 434 Series products.

• Alloy based element construction provides superior inrush withstand

ELECTRICAL CHARACTERISTICS:

1.09

(.043")

REFLOW SOLDER

1.60

(.063")

.305

(.012")

.279

(.011")

.18

(.007")

.127

(.005")

MARKING CODE VARIES

WITH AMPERAGE RATING

(SEE CHART)

R

REF.

1.02

(.040")

.762

(.030")

2.54

(.100")

1.09

(.043")

WAVE SOLDER

3.20

(.126")

1.09

(.043")

1.02

(.040")

.813

(.032")

Sn

Sn

Cu

Sn

Coating

Reference Dimensions:

% of Ampere

Opening

Rating

Time at 25

100%

4 hours, Minimum

200%

5 seconds, Maximum

300%

0.2 seconds, Maximum

Soldering Parameters(see page 3 for typical soldering profile):

Wave Solder — 260°C, 10 seconds max

Reflow Solder — 260°C, 30 seconds max

NEW

of Underwriters Laboratories and Certified by CSA.

INTERRUPTING RATINGS:

0.25 – 1A

50A at 32V AC/DC

1.25 – 5A

35A at 32V AC/DC

PHYSICAL SPECIFICATIONS:

Terminations: 100% Copper/Nickel/Tin

Element Cover Coat: Conformal Coating

Pb

RoHS