High Value Surface
Resistors
High Value Surface
Welwyn Components
Mounted Resistors
Make Possible
Welwyn Components
Mounted Resistors
High Value Surface
HR Series
Mounted Resistors
Custom designs / sizes available
HR Series
Resistance range to 50G ohms
Custom designs / sizes available
HR Series
Terminations available for wire bonding
Resistance range to 50G ohms
Custom designs / sizor solderinges available
Terminations available for wire bonding
Resistance range to 50G ohms
Low voltage coefficient of resistance
or soldering
Terminations available for wire bonding or soldering
Low voltage coefficient of resistance
Low voltage coefficient of resistance
All parts are Pb-free and comply with EU Directive 2011/65/EU (RoHS2)
Electrical Data
Power Rating
Electrical Data
The high resistance value of these devices is such that power dissipation is always small. The rating is therefore determined by
Power Rating
voltage considerations only, as shown in the table below.
The high resistance value of these devices is such that power dissipation is always small. The rating is therefore determined by
0503 0805 1005 1206 Notes
voltage considerations only, as shown in the table below.
Resistance range* ohms 10M to 20G 100M to 50G Measured at 10 volts
0503 0805 1005 1206 Notes
Limiting element voltage volts 50 100 150 200
Resistance range* ohms 10M to 20G 100M to 50G Measured at 10 volts
Ambient temperature range C -55 to + 155
Limiting element voltage volts 50 100 150 200
TCR ppm/C 0 to -2500 0 to -2000 0 to -1500 0 to -1000 Measured at 10 volts
Ambient temperature range C -55 to + 155
Resistance tolerance % 10M to 500M:10 100M to 1G:5,10 > 1G to 50G:25, 50
TCR ppm/C 0 to -2500 0 to -2000 0 to -1500 0 to -1000 Measured at 10 volts
>500M : 25, 50
Resistance tolerance % 10M to 500M:10 100M to 1G:5,10 > 1G to 50G:25, 50
*Higher values available, consult factory for details
>500M : 25, 50
*Higher values available, consult factory for details
Physical Data
Dimensions (mm) & Weight (g)
Physical Data
Wrap around Planar
Dimensions (mm) & Weight (g)
T
Style L W T max. A B C Wt
C
A
Wrap around Planar
B
0503 1.25 0.2 0.63 0.15 0.5 Not available 0.2 0.1 0.005 C
L
W
A
T
Style L W T max. A B C Wt T
Wrap-around terminations
C
0805 2.0 0.3 1.25 0.2 0.6 0.3 0.15 0.9min 0.3 0.1 0.009
A (3 faces)
B
C
0503 1.25 0.2 0.63 0.15 0.5 Not available 0.2 0.1 0.005
L L
A W W
1005 2.5 0.3 1.25 0.2 0.7 Not available 0.4 0.15 0.015
Alternative styles for
T
surface mounting
Wrap-around terminations Planar terminations
0805 2.0 0.3 1.25 0.2 0.6 0.3 0.15 0.9min 0.3 0.1 0.009
(3 faces)
resistors
1206 3.2 0.4 1.6 0.2 0.7 0.4 0.2 1.7min 0.4 0.15 0.020
L
W
1005 2.5 0.3 1.25 0.2 0.7 Not available 0.4 0.15 0.015
Alternative styles for
surface mounting
This dimension determines the number of conductors which may pass under the surface mounted device.Planar terminations
1206 3.2 0.4 1.6 0.2 0.7 0.4 0.2 1.7min 0.4 0.15 0.020 resistors
This dimension determines the number of conductors which may pass under the surface mounted device.
Construction Terminations
The resistor material is screen printed onto a 96% alumina Planar (or single-sided) termination is gold and suitable for
Constructionsubstrate and covered with a protection comprising of aT erminationsglaze wire-bonding; wrap around is suitable for soldering.
The resistorfollowed material by is anscr eenorganic printed coating. onto Thisa 96% construction alumina gives Planaran (or single-sided) termination is gold and suitable for
substrate andinsulated cover eddevice. with a protection comprising of a glaze wire-bonding;Solderability wrap around is suitable for soldering.
followed by an organic coating. This construction gives an Wrap-around terminations on HR resistors have good leach
insulated device.Marking Solderabilityresistance properties. They will withstand immersion in solder
All relevant information is recorded on the primary packageWrap-aroundat 260C terminations for 30 seconds.on HR resistors have good leach
Markingor reel. resistance properties. They will withstand immersion in solder
All relevant information is recorded on the primary package at 260C for 30 seconds.
or reel.
General Note
Welwyn Components reserves the right to make changes in product specification without notice or liability.
A subsidiary of
All information is subject to Welwyns own data and is considered accurate at time of going to print.
General Note TT electronics plc
General Note
Welwyn Components reserves the right to make changes in product specification without notice or liability.
Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK
TT Electronics reserves the right to make changes in product specification without notice or liability.
All information is subject to Welwyns own data and is considered accurate at time of going to print. A subsidiary of Issue B 03.02
Telephone: +44 (0) 1670 822181 Facsimile: +44 (0) 1670 829465 Email: info@welwyn-tt.com Website: www.welwyn-tt.com
All information is subject to TT Electronics own data and is considered accurate at time of going to print.
TT electronics plc
www.ttelectronicsresistors.com
Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK
20
TT Electronics plcTelephone: +44 (0) 1670 822181 Facsimile: +44 (0) 1670 829465 Email: info@welwyn-tt.com Website: www.welwyn-tt.com Issue B 03.02
07.14
20High Value Surface
High Value Surface
Mounted Resistors Make Possible
Mounted Resistors
HR Series Welwyn Components
HR Series
Performance Data
aM xi T py ical
Load at rated power: 1000 hours at 70C 2 1
Overload %R 1
Shelf life: 12 months at room temperature 2 1
Temperature rapid change %R 1
Change on Wave Soldering %R 1
oV ltag e pr oo f ov lts : t o :
Voltage coefficient of resistance (10V - 25V) %/V
1
5
Application Notes
Mounting Packaging
This chip resistor is ideally suited for handling by automatic Resistor chips are supplied taped and reeled on standard
8mm tape to IEC 286-3.
methods due to its rectangular shape and the small
dimensional tolerances. Electrical connection to a ceramic Quantity per reel 3000 max.
substrate or to a printed circuit board can be made by wire
Planar Terminations
bonding to planar terminations or by reflow soldering of
wrap-around terminations. The F terminations provide good Resistor chips are supplied in waffle packs.
leach properties and ensure reliable contact. Due to the
robust construction the resistor chip can be immersed in the
solder bath for 30 seconds at 260C. This enables the resistor
to be mounted on one side of a printed circuit and wire-
leaded components on the other side. The resistor must be
kept dry during use to avoid leakage. The presence of
moisture will not damage the resistor in any way.
Ordering Procedu re
Example: HR1206 with solderable wraparound terminations at 10 gigohms and 50% tolerance
on a reel of up to 3000 pieces -
H R 1 2 0 6 F 1 0 G Y I
Type
Size
Termination
F Solderable wraparound 0805, 1206 only
G Gold pad planar All sizes
Value (use IEC62 code)
Tolerance (use IEC62 code)
J 5% 5 25%
K 10% Y 50%
Packing
Tape 0805F, 1206F Up to 3000/reel
I Standard
Waffle G Termination
General Note
Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK
TT Electronics reserves the right to make changes in product specification without notice or liability.
Telephone: +44 (0) 1670 822181 Facsimile: +44 (0) 1670 829465 Email: info@welwyn-tt.com Website: www.welwyn-tt.com Issue B 03.02
All information is subject to TT Electronics own data and is considered accurate at time of going to print.
www.ttelectronicsresistors.com
21
TT Electronics plc
07.14
0.0 2.0 6021
3.0 8.0 5001
4.0 5080
005 6021 5080 001 3050
5.0
3.0
%R
2.0
%R
mum