1. No category

Low Resistance
Metal Alloy Resistor
Provisional
LRMAP3920 Series
x
x
x
x
x
Resistance range 0.2mȍ to 2mȍ
High temperature operation to 170°C
High power up to 5w
Current sensing for power electronics
RoHS compliant & halogen free
Electrical Data
A
0.2
LRMAP3920
Resistance value
mȍ
*Power rating
W
Overload rating (5s)
W
Resistance range
mȍ
Resistance tolerance
%
TCR (20 to 60°C)
ppm/°C
Ambient temperature
°C
B
0.3
B
0.5
B
0.7
5
25
±200
±150
0.2 to 2
1, 5
±60
-55 to 170
±70
B
1
4
20
C
1
5
25
C
1.5
4.5
22.5
C
2
4
20
±50
*Mounted on a 0.5°C/W heatsink with no forced air cooling, air temperature 25°C. See power derating curve and page 2.
Physical Data (All dimensions in mm)
Type
LRMAP3920A-0.2
LRMAP3920B-0.3
LRMAP3920B-0.5
LRMAP3920B-0.7
LRMAP3920B-1
LRMAP3920C-1
LRMAP3920C-1.5
LRMAP3920C-2
L
±0.3
10.0
L1
H
+0.2
-0.3
4.0
+0.3
-0.2
5.0
5.2
A
max
0.6
D
B
±0.5
±0.1
2.0
0.5
T
nom
1.50
1.42
0.87
0.62
0.43
1.46
0.97
0.73
Marking
The component is laser marked with the ohmic value.
Solvent Resistance
The component is resistant to all normal industrial cleaning solvents suitable for printed circuits.
Construction
The component is formed from a continuous band of E-beam welded (EBW) precision resistive strip. Various alloys
are used based on the resistance value.
General Note
TT electronics reserves the right to make changes in product specification without notice or liability.
All information is subject to TT electronics’’ own data and is considered accurate at time of going to print.
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
© TT electronics plc
01.14
Low Resistance Metal Alloy Resistor
LRMAP3920 Series
Performance Data
Power Derating Curve & Mounting
P/PNOM
Terminal temperature TK(°C)
Reference Pad Dimensions (mm)
Size
a
b
L
6.2
2.7
5.6
LRMAP3920
Processing
LRMAP3920 series resistors are suitable for both wave and IR reflow soldering. The recommended reflow profile
for Pb-free SAC305 alloy (Sn 96.5%, Ag 3%, Cu 0.5%) soldering is as follows:
Pre-heat: 60s to 120s at 150°C to 180°C
Soldering: 20s to 40s at •230°C
Peak: 5s at 250°C to 255°C
General Note
TT electronics reserves the right to make changes in product specification without notice or liability.
All information is subject to TT electronics’’ own data and is considered accurate at time of going to print.
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
© TT electronics plc
09.13
Low Resistance Metal Alloy Resistor
LRMAP3920 Series
Measurement
Excitation Current:
3A (0.2mŸ -1.5mŸ).
1A (2mŸ).
Resistor
Contact Probes
Ohm Meter
Current
Voltage
Unit: mm
Resistance testing for the LRMAP3920 Series is performed on the top of the copper contacts using the above fixed
4 terminal wire precision probe position.
Packaging
LRMAP3920 resistors are packed in 16mm tape, 3000components/reel.
Ordering Procedure
Example: LRMAP3920 at 1.5 milliohms and 1% tolerance packed in tape.
L R M A P3920 C––R 0 0 1 5 F T
Type
Alloy Version
A
B
C
Value (use IEC62 code)
Tolerance (use IEC62 code)
F
J
1%
5%
Packing
T
Tape
LRMAP3920
3000/reel
Standard
General Note
TT electronics reserves the right to make changes in product specification without notice or liability.
All information is subject to TT electronics’’ own data and is considered accurate at time of going to print.
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
© TT electronics plc
09.13