TLRH
metal plate chip type low resistance resistors
EU
current
sense
features
• SMD Type of small size, low resistance
resistor for current detection
• Carrier metal plate inside, resistor of high radiation
of heat structure (3AW, 3AP)
• High reliability and performance with low T.C.R.
• Automatic mounting machines are applicable
• Suitable for reflow soldering
(2A: Not suitable for wave soldering)
• Products meet EU RoHS requirements
• AEC-Q200 Tested
dimensions and construction
Resistance
Size
(Ω)
Code (Inch)
2A
L
TLRH 2A
(0805)
W
Sn Plating
Inner
Electrode
d
Resistive Ni Plating
Element
Protective
Coating
TLRH 3AP
(2512)
.049±.008
(1.25±0.20)
.126±.008
(3.20±0.20)
.014±.008
(0.35±0.20)
.030±.008
(0.75±0.20)
t
.010±.006
(0.25±0.15)
.020±.008
(0.50±0.20)
.071±.008
.248±.008 .126±.008 (1.8±0.20) .020±.008
(6.30±0.20) (3.20±0.20) .051±.008 (0.50±0.20)
40m~120m
(1.3±0.20)
6m~39m
Derating Curve
100
3AW
L
80
W
Sn Plating
Inner
Electrode
t
Ni Plating
d
Protective Resistive
Coating
Element
12m~100m .079±.008
(2.00±0.20)
TLRH 3AW 10m~270m .248±.008
(6.30±0.20)
(2512)
% Rated Power
t
Dimensions inches (mm)
W
d
L
3AW/3AP (40~120mΩ)
60
2A
40
3AP (6~39mΩ)
20
0
-80
Carrier
Metal Plate
Insulation
-60 -40 -20
-65
20 40 60 80 100 120 140 160 180
155 170
85 105
Terminal Part Temperature
(°C)
0
For resistors operated at a terminal part temperature of described for each size
or above, a power rating shall be derated in accordance with the derating curve.
Please refer to “Introduction of the derating curve based on the terminal part
temperature” in the beginning of our catalog before use.
ordering information
TLRH
Type
3AW
T
Power
Rating
2A (12~27mΩ): 0.5W
(33~50mΩ): 0.33W
(56~100mΩ): 0.25W
3AW: 2.0W
3AP: (6~39mΩ): 5.0W
(40~120mΩ): 4.0W
Terminal
Surface Material
T: Sn
TE
Packaging
2A: TD: 7" 4mm pitch
punched paper
3AW, 3AP: TE:
7" punched plastic
33L0
Nominal
Resistance
±1%: 4 digits
All values less than
0.1Ω (100m) are
expressed in mW
with “L” as decimal
Ex: 2mΩ = 2L00
2A: No marking
F
Tolerance
F: ±1%
For further information on packaging, please refer to Appendix A.
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
110
7/21/23
KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
TLRH
metal plate chip type low resistance resistors
applications and ratings
Power
Rating
T.C.R.
(x10-6/K)
Resistance
Range (Ω)
F: ±1% (E12)
±75
33m ~ 50m
0.25W
4.0W
5.0W
+105°C
10m~22m
±75
2.0W
TLRH 3AP
-65°C~+155°C
12m ~ 27m
0.50W
TLRH 3AW
Operating
Temperature
Range
56m~100m
0.33W
TLRH 2A
Rated
Terminal Part
Temperature
±50
24m~270m
±50
40m, 47m, 50m~120m
-65°C~+170°C
±50
18m, 20m, 22m, 25m~39m
±75
6m, 7m, 8m, 9m, 10m, 12m
85°C
environmental applications
One-Pulse Limiting Electric Power
TLRH3AW/TLRH3AP
10,000
1,000
100
10
1
.001
.01
.1
1
Pulse Duration
(ms)
10
100
One-Pulse Limiting Electric Power (W)
One-Pulse Limiting Electric Power (W)
TLRH2A
100,000
100,000
Please ask us about the resistance characteristic
of continuous applied pulse.
The pulse endurance values are not assured
values, so be sure to check the products on
actual equipment when you use them.
10,000
1,000
100
3AW
10
3AP
1
.001
.01
.1
1
Pulse Duration
(ms)
10
100
Thermal Resistance
Size
2A
TLRH
Resistance (Ω)
27m
50m
Rth (°C/W)
123
195
100m
280
5.2
3AW
3AP
10m
270m
18m
120m
Terminal Part Temperature
TH :High
TM :Medium =ts
TL :Low
TM + T=Hs
Temperature
Type
7.4
7.4
4.1
Rth=(Hs-ts)/Power
Regarding the temperature rise, the value of the temperature varies
per conditions and board for use since the temperature is measured
under our measuring conditions. Please refer to us before use.
TH + T=Hs
T
T
TH
TL + T=Hs
T
TM
TL
Low
The temperature of the resistor will
increase the same ⊿T from the
standard terminal part temperature
regardlless of the ambient temperature
when the same power is applied. This
is because there is hardly any heat
dissipation from the resistor surface
to the ambient air.
High
Terminal Part Temperature
Performance Characteristics
Parameter
Resistance
T.C.R.
Overload (Short time)
Resistance to Soldering Heat
Rapid Change
of Temperature
Requirement Δ R%
Limit
Typical
Within specified
—
tolerance
Within specified
—
T.C.R.
2A: ±0.05%
±0.5%
3AW,3AP: ±0.2%
±0.5%
±0.1%
±0.5%
Moisture Resistance
Endurance at 105°C and Less
of Terminal Part Temperature
±0.5%
Low Temperature Exposure
±0.5%
High Temperature Exposure
±1%
±1%
±2%
2A: ±0.2%
3AW,3AP: ±0.1%
±0.1%
2A: ±0.45%
3AW,3AP: ±0.3%
2A: ±0.05%
3AW,3AP: ±0.02%
2A: ±0.5%
3AW,3AP: ±0.2%
3AP: ±0.2%
Test Method
25°C
+25°C/+100°C
2A, 3AW: Rated power x 2.5 for 5 seconds
3AP: Rated power x 8W for 5 seconds
260°C ±5°C, 10 seconds ~ 12 seconds
-55°C (15min.)/+150°C (15min.) 1000 cycles
85°C ±2°C, 85% RH, 1000 hours, 10% Bias
2A, 3AW, 3AP (40~120mΩ): 105°C, ±2°C; 3AP (6~39mΩ): 85°C ±2°C
1000 hours, 1.5 hours ON/0.5 hour OFF cycle
-65°C, 96 hours
2A, 3AP: +155°C, 1000 hours (6~12mΩ)
3AW, 3AP: +170°C, 1000 hours (18~120mΩ)
3AP: +170°C, 1000 hours (6~12mΩ)
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
7/21/23
KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
111
current
sense
Part
Designation