Description
• Fast acting micro fuse
• Base and cap material is a thermoplastic, UL 94-V0
• Leads are tin-lead plated copper alloy
Electrical Characteristics
Agency Information
• Semco Certificate VDE License: 250mA to 5A / 35A or
10 In whichever is greater @ 250VAC
• UL Recognized File No. E19180, CSA Acceptance File
No. LR701159; 250mA to 5A / 50A @ 250VAC
• RoHS Compliant
Environmental Data
• Soldering Heat Resistance: 260°, 10 sec. per IEC 68-2-20
• Vibration Resistance: MIL-STD-202, Method 201,
10-55Hz x 3 axis/ no load
• Shock Resistance: MIL-STD-202, Method 213,
Condition I (Sawtooth)
• Moisture Resistance: MIL-STD-202F, Method 106
• Salt Spray: MIL-STD-202, Method 101,
Condition B (48 hrs)
• Operating Temperature: -55°C to +125°C
Ordering
• Specify product code and packaging code
150% 210% 275% 400% 1000%
Rated Current Min. Max. Min. Max. Min. Max. Max.
250mA to 5A 1 hr. 30 min. 10 ms. 3 sec. 3 ms. 300 ms. 20 ms.
All are 250V AC
Dimensional Data
Dimensions
mm (inches)
Short Lead Long Lead
A 8.35 ± 0.1 (0.329) 8.35 ± 0.1 (0.329)
B 7.7 ± 0.1 (0.303) 7.7 ± 0.1 (0.303)
C 4.3 ± 0.3 (0.169) —
D — 18.8 ± 0.3 (0.740)
E 0.5 min. (0.020) 0.5 min. (0.020)
F 5.08 ± 0.1 (0.200) 5.08 ± 0.1 (0.200)
∅∅
0.6 ± 0.1 (0.024) 0.6 ± 0.1 (0.024)
Voltage Drop measured at 100% of rated current.
Melting I
2
t measured at 10X current rating
SPECIFICATIONS
Product Ampere Typical Cold Volt-drop Melting I
2
T Melting I
2
T Maximum
Code Rating Resistance @ 100% In < 10 mSec @ 10 In Power
(ohm) (Volt) max. (A
2
Sec) (A
2
Sec) Dissipation (W)
EFF-250mA 250mA 0.45 0.254 0.029 0.027 0.15
EFF-315mA 315mA 0.34 0.246 0.05 0.05 0.18
EFF-400mA 400mA 0.25 0.239 0.08 0.08 0.22
EFF-500mA 500mA 0.19 0.232 0.15 0.13 0.27
EFF-630mA 630mA 0.091 0.106 0.12 0.13 0.15
EFF-800mA 800mA 0.071 0.103 0.21 0.22 0.19
EFF-1 1A 0.055 0.1 0.36 0.36 0.23
EFF-1.25 1.25A 0.043 0.097 0.61 0.59 0.28
EFF-1.6 1.6A 0.034 0.094 1.1 1 0.35
EFF-2 2A 0.026 0.091 1.8 1.7 0.42
EFF-2.5 2.5A 0.02 0.088 3.1 2.7 0.51
EFF-3.15 3.15A 0.016 0.086 5.3 4.5 0.62
EFF-4 4A 0.012 0.083 9 8 0.77
EFF-5 5A 0.01 0.081 16 13 0.93
EFF-6.3 6.3A 0.008 0.078 27 21 1.14
Radial Lead Micro Fuse
EFF Series, Fast Acting
