Resistors
High Current Jumper Chip
High Current Jumper Chip
LRZ Series
LRZ Series
LRZ Series
High current zero-Ohm link
High current zero-Ohm link
•
High current zero-Ohm link
Thick
copper technology
Thick film copper technology
•
Thick film
to 35A
technology
copper
Current
Current rating to 35A
Typical resistance
1.5mΩ
•
Current rating to 35A
Typical resistance 1.5mΩ
Inductance below 0.2nH
Inductance below 0.2nH
•
Typical resistance 1.5mΩ
AEC-Q200
AEC-Q200 Qualified
•
Inductance below
variants
0.2nH
RoHS compliant and SnPb
RoHS compliant and SnPb variants
Welwyn Components
•
AEC-Q200 Qualified
All Pb-free parts comply with EU
2011/65/EU (RoHS2)
All Pb-free parts comply with EU Directive 2011/65/EU (RoHS2)
Electrical Data
Size
Current rating @ 70 °C
2 second overload current @ 25ºC
Residual resistance
Ambient temperature range
Dielectric withstand voltage
Temperature rise at rated current
Pad & trace area for rated current
amps
amps
o hms
°C
volts
ºC
mm
2
0603
6
12
0805
15
30
1206
20
40
0.003 max.
-55 to +150
200
2010
30
60
2512
35
70
Notes
DC or AC rms
0.0015 typ.
15
40
30
40
40
50
80
100
90
300
See Application Notes
Physical Data
Dimensions (mm) & Weight (g)
0603
0805
1206
2010
2512
L
1.6 ± 0.3
2.0 ± 0.3
3.20 ± 0.31
6.5 ± 0.38
W
0.8 ± 0.2
1.25 ± 0.2
1.63 ± 0.2
3.25 ± 0.25
T
0.5 ± 0.1
0.61 ± 0.1
0.61 ± 0.1
0.74 ± 0.1
0.74 ± 0.1
A
0.3 ± 0.15
0.3 ± 0.15
C
0.25 ± 0.15
0.3 ± 0.1
Wt
0.003
0.009
0.020
0.036
0.055
A
L
A
W
C
T
0.48 ± 0.25 0.48 ± 0.25
0.48 ± 0.25 0.48 ± 0.25
0.48 ± 0.25 0.48 ± 0.25
5.23 ± 0.38 2.64 ± 0.25
Wrap-around terminations
(3 faces)
Construction
A thick film copper conductive element and organic
protection are screen printed on a 96% alumina substrate.
Parts supplied under USA part numbering have the conductive
element on the underside whilst those supplied under
European numbering have it on the upper side. These two
formats are functionally identical and interchangeable, and
marking is always on the upper surface.
withstand immersion in solder at 260˚C for 30 seconds and
are suitable for reflow or wave soldering processes.
Marking
The body protection is resistant to all normal cleaning solvents
suitable for printed circuits. 1206 and larger size chips supplied
under USA part numbering are marked LRZ and those supplied
under European numbering are marked R000. 0603 and 0805
sizes are not marked.
Terminations
The wrap-around copper terminations have an electroplated
nickel barrier and solderable coating, which ensures excellent
‘leach’ resistance properties and solderability. Chips can
General Note
General
Note
General
Note
Welwyn Components
the right to make changes in
changes
specification
specification without notice or liability.
TT Electronics reserves
reserves the right to make
product
in product
without notice or liability.
All
information is subject to
to Welwyn’s own data and is
is considered
accurate
at time of going to print.
information is subject
TT Electronics’ own data and
considered
accurate
at time of going to print.
All
information is subject to TT Electronics’ own data and is considered accurate at time of going to print.
All
BI Technologies IRC Welwyn
A subsidiary of
www.ttelectronics.com/resistors
TT electronics plc
www.ttelectronics.com/resistors
04.10
11.17
11.17
© Welwyn Components Limited
· Bedlington, Northumberland NE22 7AA, UK
© TT Electronics plc
© TT Electronics plc
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
29
High Current
High Current
High
Chip
Jumper
Current Jumper Chip
Jumper Chip
LRZ Series
LRZ Series
LRZ Series
Welwyn Components
AEC-Q200 Table 7
ref
3
4
6
7
8
14
15
16
18
21
22
Test
High Temp. Exposure
Temperature Cycling
Moisture Resistance
Biased Humidity
Operational Life (Cyclic Load)
Vibration
Resistance to Soldering Heat
Thermal Shock
Solderability
Board Flex
Terminal Strength
Leach Resistance
Method
MIL-STD-202 Method 108
JESD22 Method JA-104
MIL-STD-202 Method 106
MIL-STD-202 Method 103
MIL-STD-202 Method 108
MIL-STD-202 Method 204
MIL-STD-202 Method 210
MIL-STD-202 Method 107
J-STD-002
AEC-Q200-005
AEC-Q200-006
Solder dip at 250°C
Result
Pass (see note 1)
Pass (see note 1)
Pass (see note 1)
Pass (see note 1)
Pass (see note 1)
Pass (see note 1)
Pass (see note 1)
Pass (see note 1)
>95% coverage
Pass (see note 1)
Pass (see note 1)
90s minimum
Notes:
1. AEC quali cation based on testing of structurally similar LRF Series low value chip resistors, of which LRZ is the zero-ohm version.
R measurements are not applicable to the zero-ohm version.
2. Although 2010 and 2512 sizes have passed temperature cycling and thermal shock, it is in general not recommended that ceramic chips this large
be used on FR4 in a severe temperature cycle environment due to the possibility of solder joint fatigue.
3. Full AEC-Q200 quali cation applies to sizes 0603, 1206, 2010 and 2512
Temperature Derating
Derating Characteristic
Proportion of Rated Current
120%
100%
80%
60%
40%
20%
0%
0
50
Ambient Temperature (˚C)
100
150
Pulse Performance
Continuous Pulse Performance
1000
Peak Current (A)
100
LRZ1206
LRZ2010
LRZ2512
10
0.1
1
10
100
1000
Pulse Duration (ms)
Telephone: +44
General Note
(0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
BI Technologies
TT
General Note
the right to make changes in product specification without notice or liability.
Electronics reserves
BI Technologies
© Welwyn Components Limited
Bedlington, Northumberland NE22 7AA, UK
All
TT Electronics reserves
to TT Electronics’ own data
in product specification without notice
going to print.
information is subject
the right to make changes
and is considered accurate at time of
or liability.
All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.
04.10
IRC Welwyn
IRC Welwyn
© TT Electronics plc
© TT Electronics plc
www.ttelectronics.com/resistors
www.ttelectronics.com/resistors
11.17
11.17
High Current
High Current
LRZ Series
Jumper Chip
LRZ Series
Jumper Chip
Welwyn Components
Application Notes
Conventional thick film “zero-Ohm” jumper chips typically
have up to 50m resistance values and 1 to 2A current
ratings. LRZ jumper chips offer a solution for currents over an
order of magnitude greater by combining lower resistance
values with better thermal conductivity.
Care should be taken when designing the associated printed
circuit board tracks to ensure that they can carry the required
current without excessive heating, for example by using
multiple layers thermally linked with many vias. Any
temperature rise caused by power dissipated in the PCB tracks
themselves should be allowed for when calculating the
ambient temperature in order to determine whether power
de-rating should be applied. The minimum recommended pad
and trace areas close to the resistor stated under Electrical
Data should be provided at each terminal.
Pad and trace area close to the resistor is defined as being
the total copper area within two squares of the edge of the
solder pad, plus the solder pad area.
For multi-layer PCB’s, this minimum area requirement should be
met by surface layers rather than buried layers. The actual solder
pad area follows the normal design rules for chip resistors.
LRZ jumper chips themselves can operate at a maximum
temperature of 150˚C (see performance above). For
conventionally soldered jumper chips, the joint temperature
should not exceed 110˚C. This condition is met when the
stated current levels at 70˚C are used.
Ordering Procedure
Ordering Procedure
Ordering Procedure
Packaging
This product has two valid part numbers:
L
L
R
R
1
1
Z
Z
1
1
2 0
22 0
2
6
6
European (Welwyn) Part Number: LRZ1206-R000
(1206, Pb-free)
European (Welwyn) Part Number: LRZ1206-R000
(1206, Pb-free)
-
-
R
R
0 0
03 0
3
0
0
4
4
LRZ jumper chips are supplied taped and reeled as per IEC 286-3.
This product has two valid part numbers:
1
2
3
1
2
3
Type Size Value
Type
0603
Value
LRZ
Size
R000
LRZ 0805 R000
0603
1206
0805
2010
1206
2512
2010
2512
6
6
Termination & Packing
Omit
Termination & Packing
for Pb-free, standard packing
PB = SnPb finish, standard packing
Omit for Pb-free,
Standard finish, standard packing
PB = SnPb packing is tape & reel
0603
5000/reel
Standard packing is tape & reel
0805, 1206 & 2010
3000/reel
0603
5000/reel
2512
1800/reel
0805, 1206 & 2010
3000/reel
2512
1800/reel
USA (IRC) Part Number: LRC-LRZ1206LF-R000
(1206, Pb-free)
USA (IRC) Part Number: LRC-LRZ1206LF-R000
(1206, Pb-free)
L
L
R
R
1
1
C
C
-
-
L
L
R
R
2
2
Z
Z
1
1
2 0
23 0
3
6
6
L F
L4 F
4
-
-
R
R
0 0
05 0
5
0
0
1
2
3
4
5
1
2
3
1
4
5
Family Model Size Termination Value
Packing
1
Family Model
1206 Omit for SnPb
Value
Standard packing is tape & reel
Packing
LRC
LRZ
Size Termination
R000
LRC
LRZ 2010 Omit for SnPb R000 1206 & 2010
1206 LF = Pb-free
Standard packing 3000/reel reel
is tape &
2512 LF = Pb-free
2512
1800/reel
2010
1206 & 2010
3000/reel
2512
2512
1800/reel
Note 1: Sizes 0603 & 0805 are only available under European part numbering.
Note 1: Sizes 0603 & 0805 are only available under European part numbering.
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.
© Welwyn Components Limited
Bedlington, Northumberland NE22 7AA, UK
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
BI Technologies IRC Welwyn
www.ttelectronics.com/resistors
04.10
© TT Electronics plc
11.17
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