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LF-301 Datasheet(Fiches technique) 1 Page - Rohm

Numéro de pièce LF-301
Description  Solder Profile and Pattern
Télécharger  1 Pages
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Fabricant  ROHM [Rohm]
Site Internet  http://www.rohm.com
Logo ROHM - Rohm

LF-301 Datasheet(HTML) 1 Page - Rohm

  LF-301 Datasheet HTML 1Page - Rohm  
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Solder Profile and Pattern
1) Dip Types (LA, LB ,LAP,LBP series)
Please keep the preheat and peak temperatures with dip units as low as possible and the times as short as
is feasible, since the products are susceptible to heat during flow soldering. As a guide, ensure that the
internal temperature of the LED numeric display does not exceed 100
°C.
2) Surface Mount Type (LF-301 series)
Please refer to the following reflow soldering profile and pattern examples for surface mount units.
φ1.5
land shape
+0.1
0
φ0.8
hole shape
LA-301 series
Solder Pattern Example
+0.1
0
φ2.0
land shape
+0.1
0
φ1.0
hole shape
Other series
+0.1
0
300
250
200
150
100
50
0
60
80
100
120
140
40
Time (s)
Soldering Example
Conditions
General
flow conditions
3s or less
260
°C or less
20
0
A single wave is better than a double wave, while
stationary flow method is the best.
After soldering, immediately lower
the temperature of the substrate
10-0.6
P=1.27
Solder Pattern Example
250
200
150
100
50
0
200
250
300
150
Time (s)
Type
LF-301A/K series
A (Heat Slope 1)
4
°C/s max
B (Preheat)
140 to 160
°C
(1 min. or less)
C (Heat Slope 2)
4
°C/s max.
D (Peak temperature, peak time)
250
°C max,5s max.
E (200
°C + range)
50s max.
100
0
50
Reflow Soldering Example
B: Preheat
D: Peak Temperature
E: 200
°C
+ range
A: Heat Slope 1
C: Heat Slope 2
Preheat 30s
or less
LF-301 A/K series
Please use a resin-based flux,since flux that is acidic or highly alkaline could cause corrosion.
Item
Conditions
Solder Temperature
Process Duration
Solder dip
Solder iron
Reflow
Reflow cannot be used. (other than the LF-301 series)
At least 2mm from the base of the lead pin.
Preheat temperature must
be no greater than 80
°C.
No more than 260
°C.
30 seconds or less
3 seconds or less
At least 2mm from the base of the lead pin.
Power: No more than 30W.
No more than 300
°C.
3 seconds or less


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