Littelfuse 372 Series - Manual (Page 3)

© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/19/13
Radial Lead Fuses
TR5 ® > Time-Lag > 372 Series
Materials
Base/Cap: Brown Thermoplastic
Polyamide PA 6.6, UL 94 V-0
Round Pins: Copper, Tin-plated
Lead Pull Strength 10 N (EN 60068-2-21)
Solderability
260ºC, ≤ 3s. (Wave)
350ºC, ≤ 1s. (Soldering Iron)
Soldering Heat
Resistance 260ºC, 10s. (IEC 60068-2-20)
350ºC, 3s. (Soldering Iron)
Operating
Temperature
-40ºC to +85ºC (consider de-rating)
Climatic Category
-40ºC/+85ºC/21 days
(IEC 60068-1,-2-1,-2-2,-2-78)
Stock Conditions
+10ºC to +60ºC
RH ≤ 75% yearly average, without dew,
maximum value for 30 days-95%
Vibration
Resistance
24 cycles at 15 min. each
(EN 60068-2-6)
10 - 60 Hz at 0.75 mm amplitude
60 - 2000 Hz at 10G’s acceleration
Product Characteristics
Soldering Parameters - Wave Soldering
Dwell Time
0
20
40
60
80
100
120
140
160
180
200
220
240
260
280
300
0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240
Time (Seconds)
Temperature (°C) - Measured on bottom side of board
Cooling Time Preheat Time
Wave parameter lead-Free Recommendation
preheat:
(Depends on Flux Activation Temperature) (Typical Industry Recommendation)
Temperature Minimum: 100 ° C
Temperature Maximum: 150 ° C
Preheat Time: 60-180 seconds
Solder pot Temperature: 260 ° C Maximum
Solder Dwell Time: 2-5 seconds
Recommended Hand-Solder Parameters:
Solder Iron Temperature: 350° C +/- 5°C
Heating Time: 5 seconds max.
Note: These devices are not recommended for IR or
Convection Reflow process.
Recommended Process Parameters:
Dimensions
∅ 8.5
0.5 min
max.
8
L
∅ 0.6
5.08
Löcher in der Leiterplatte
Holes in the printed circuit board
1 +0.1
Long Leads (L=18.8mm)
Short Leads (L=4.3mm)
Part Numbering System
Packaging
packaging
Option
packaging
Specification Quantity
Quantity &
packaging
Code
Taping
Width
372 Series
Tape &
Ammopack
N/A 1,000 0001 N/A
Short Leads N/A 1,000 0411 N/A
Short Leads N/A 200 0431 N/A
3.3mm
Leads
N/A 1,000 0511 N/A
0001 372 xxxx
Packaging Code
Amp Code
Series
0001 Tape/Ammopack (1,000 pcs.)
0411 Short Leads - Bulk (1,000 pcs.)
0431 Short Leads - Bulk (200 pcs.)
0511 3.3 mm Leads - Bulk (1000 pcs.)
Refer to Amp Code column of
Electrical Characteristics Table