Littelfuse 436 User Manual
38
SURFA CE MOUNT FUSES
SMTelecom®Fuse 436 Series
• Surface mount overcurrent protection from lightning and
power cross.
• Meets UL 1459/1950 power cross requirements stand alone.
• Ideal for use in telecommunication equipment including
modems, fax machines, desk top phones, answering
machines and line cards.
• UL recognized, with a 250 V operating voltage.
• Top side marking allows visual verification of ampere rating.
• Complies with Bellcore GR-1089-CORE and FCC 47 part
68 Surge Specifications.
ELECTRICAL CHARACTERISTICS:
% of
Ampere Rating Opening Time
100% 4 Hours, Minimum
200% 5 Seconds, Min.; 30 Seconds, Max.
Short Circuit Capabilities:
UL 1459 / UL 1950 3rd. Edt.
40 Amperes @ 600 VAC
7 amperes @ 600 VAC
2.2 amperes @ 600 VAC
AGENCY APPROVALS: Recognized under the
Components Program of Underwriters Laboratories and
Certified by CSA .
AGENCY FILE NUMBERS: UL E10480, CSA LR 29862.
INTERRUPTING RATINGS:
10,000 amperes @ 125V
100 amperes @ 250V
ENVIRONMENTAL SPECIFICATIONS:
Operating Temperature Range: –55°C to +125°C
PHYSICAL SPECIFICATIONS:
Materials: Body: Melamine Substrate
Terminations: Copper/Nickel/Tin-Lead (95/5)
Soldering Parameters:
Reflow Solder — 250°C, 10 sec.maximum.
Wave Solder — Not recommended.
PACKAGING SPECIFICATIONS: 24mm Tape and Reel
per EIA-RS481-2 (IEC 286, part 3); 2,000 per reel, add
packaging suffix, PR.
PATENTED
ORDERING INFORMATION:
Average Time Current Curves
Reference Dimensions
4 3 6
3 / 4 A
14.99 (.590")
13.21
(.520")
1.27
(.050")
PROTECTIVE
COATING
NICKEL/TIN-LEAD PLATED
COPPER TERMINATIONS
2.41 (.095")
MAX.
.64 (.025") REF.
10.29
(.405")
2.92
(.115")
4.57 (.180")
5.08 (.200")
4.19 (.165")
Catalog
Number
0436.750
0436 001.
0436 1.25
0436 01.5
0436 01.6
Ampere
Rating
(A)
3/4
1
11/
4
11/
2
16/
10
Voltage
Rating
(V)
250
250
250
250
250
Nominal
Cold
Resistance (Ω)
0.850
0.475
0.305
0.210
0.165
Nominal
Melting I2t
(A2sec.)
1.143
2.606
3.658
5.921
13.500
Recommended Pad Layout:
Catalog
Number
Repetitions
0436.750
0436 001.
0436 1.25
0436 01.5
0436
01.6
Longitudinal Surge
10x160µSec.
(1500 V)
50 2
82 A 88 A
102 A 117 A
120 A 135 A
175 A 200 A
200 A 200 A
Metallic Surge
10x560µSec.
(800 V)
50 2
29 A 32 A
44 A 48 A
87 A 95 A
100 A 115 A
134 A 156 A
10x1000µSec.
(1000 V)
50
22 A
37 A
56 A
80 A
100 A
2x10µSec.
(2500 V)
20
225A
350A
425A
500A
500A
PERFORMANCE CHARACTERISTICS:
FCC 47 Part 68 Bellcore GR-1089-CORE
First Level Lightning
®
®
This Part is being obsoleted. Please use the 461 series for
all future designs.
3/4A
1 1/4A
1A
100
10
1
0.1
TIME IN SECONDS
0.01
0.001
0.3 1 10 100
1 1/2A
CURRENT IN AMPERES
1.6A
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