CR0805F14K7J - Welwyn Components, Ltd.

Commercial CR0503 CR0805 CR1005 CR1206 CR2010 CR2512 Notes

Power rating at 70°C watts 0.063 0.125 0.125 0.25 0.5 1.0

Resistance range ohms 1R to 10M 1R to 100M 1R to 1M

Limiting element voltage volts 50 100 150 200 400 500

TCR -55° to +155°C ppm/°C <10 ohms 350: 10 to 100 ohms 200:

100 to 1M ohm 100: >1M ohm 250

Resistance tolerance % 0.1, 0.25, 0.5, 1, 2, 5

See table of value ranges

Ambient temperature range °C -55 to 155

Approved CECC 40401-004 CR0805 CR1206

Power rating at 70°C watts 0.125 0.25

Resistance range ohms 1R to 10M

Limiting element voltage volts 100 200

TCR -55°C to +125°C ppm/°C <10 ohms 200: 10 to 1M 100: >1M 200

TCR +20°C to +70°C ppm/°C <10 ohms 200: 10 to 1M 50: >1M 100

Resistance tolerance % 0.5, 1, 2, 5

See table of value ranges

Ambient temperature range °C -55 to +125

Surface Mounted

Resistors

CR Series

•CECC released products

•Custom designs/sizes available

•Any resistance value available within specified range

•Terminations available for wire bonding or soldering

•Available in sizes down to 0503

•Resistance range 1 ohm to100M ohms

•Tolerances down to 0.1%

•Solder terminations have a nickel barrier layer

•Shorting Links available

General Note

Welwyn Components reserves the right to make changes in product specification without notice or liability.

All information is subject to Welwyn’s own data and is considered accurate at time of going to print.

Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com

Electrical Data

Issue E · 08.04

A subsidiary of

TT electronics plc

Welwyn Components

Approved CECC 40401-008 CR0805 CR1206 CR2010 CR2512

Power rating at 70°C watts 0.125 0.25 0.5 1.0

Resistance range ohms 1R to 10M 1R to 10M 1R to 1M 1R to 1M

Limiting element voltage volts 100 200 400 500

TCR -55°C to +155°C ppm/°C <10 ohms 200: 10 to 1M ohms 100:

>1M ohms 250

Resistance tolerance % 0.1, 0.25, 0.5, 1, 2, 5

See table of value ranges

Ambient temperature range °C -55 to 155

Approved CECC 40401-003 CR0805 CR1206

Power rating at 70°C watts 0.063 0.125

Resistance range ohms 1R to 3M 1R to 5M

Limiting element voltage volts 100 200

TCR -55°C to +125°C ppm/°C <5 ohms 500: 5 to 10 ohms 350:

10 to 3M ohms 100: >3M ohms 250

Resistance tolerance % 0.25, 0.5, 1, 2, 5

See table of value ranges

Ambient temperature range °C -55 to 125

Values E24 & E96 preferred

Any value to order

Thermal impedance °C/watt 800 360 290 200 80 70

Mounted on custom

designed PCB’s

CR_E.qxd 8/9/04 5:26 PM Page 1

Dimensions of Standard Styles (mm) & Weight (g)

Wrap around

Style L W T max A B†CWt

0503 1.25±0.2 0.63±.15 0.5 Not available 0.20±0.1 0.005

0805 2.0±0.2

1.25±0.15

0.6 0.3±0.15 0.9 min 0.3±0.1 0.009

1005 2.5±0.3 1.25±0.2 0.7 Not available 0.4±0.15 0.015

1206 3.2±0.2 1.6±0.2 0.7 0.4±0.2 1.7 min 0.4±0.15 0.020

2010 5.1±0.3 2.5±0.2 0.7 0.6±0.3 3.0 min N/A 0.036

2512 6.5±0.3 3.2±0.2 0.7 0.6±0.3 4.4 min N/A 0.055

Surface Mounted

Resistors

CR Series

Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com

CECC 40401-008 CECC40401-004 CECC40401-003

Actual

Requirements Requirements Requirements Maximum Typical

Load at rated power: 1000 hours at 70°C ∆R% 2 2 ≤3M3 2 2 0.25

>3M3 3

Shelf life: 12 months at room temp. ∆R% - - - 0.1 0.02

Derating from rated power at 70°C Zero at 155°C Zero at 125°C Zero at 125°C

Overload ∆R% 0805:1 1206:0.5 0.5 2 1 0.1

Dry Heat: 1000 hours at UCT ∆R% 2 1 ≤3M3 2 to 10M 1 0.2

(125°C for 003 & 004 - 155°C for 008) >3M3 3 >10M 2 >10M 1

Long term damp heat ∆R%22210.25

Temperature rapid change ∆R% 0.5 0.5 1 0.25 0.05

Resistance to solder heat ∆R% 0.5 0.5 2 0.25 0.05

Voltage proof volts 0805 : 200 1206 : 300 0503 : 100

2010 : 400 2512 : 500 All others : 500

Physical Data

†This dimension determines the number of conductors which may pass under the surface mounted device.

Issue E · 08.04

Welwyn Components

Performance Data

Value Ranges (ohms)

Wrap-around terminations

(3 faces)

Planar terminations

Construction

Thick film resistor material, overglaze and organic protection

are screen printed on a 96% alumina substrate.

Terminations

Planar (or single-sided) termination is gold and suitable for

wire-bonding; wrap-around is suitable for soldering.

Solderability

Wrap-around terminations have an electroplated nickel barrier

and solder coating, this ensures excellent ‘leach’ resistance

properties and solderability. They will withstand immersion in

solder at 260°C for 30 seconds.

Marking

All relevant information recorded on the primary package or reel.

Tolerance %

Size 5 2 1 0.5 0.25 0.1

0503 1 to 10M 1 to 10M 10 to 10M 100 to 1M N/A N/A

0805 1 to 100M 1 to 50M 1 to 20M 10 to 10M 100 to 1M 100 to 1M

1005 1 to 100M 1 to 50M 1 to 20M 10 to 10M 100 to 1M 100 to 1M

1206 1 to 100M 1 to 50M 1 to 25M 10 to 10M 100 to 1M 100 to 1M

2010 1 to 1M 1 to 1M 1 to 1M 10 to 10M 100 to 1M N/A

2512 1 to 1M 1 to 1M 1 to 1M 10 to 10M 100 to 1M N/A

Alternative styles for

surface mounting resistors

Note: An 0.01 ohm addition to be added to the performance of all resistors <10 ohms

CR_E.qxd 8/9/04 5:26 PM Page 2

Surface Mounted

Resistors

CR Series

Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com Issue E · 08.04

Welwyn Components

Operating Temperature Range

The chips themselves can operate at a maximum temperature

of 155°C (see performance claims above). For soldered chips,

the joint temperature should not exceed 110°C. This

condition is met when the stated power levels at 70°C are

used.

Mounting

This chip resistor is ideally suited for handling by automatic

methods due to its rectangular shape and the small

dimensional tolerances. Electrical connection to a ceramic

substrate or to a printed circuit board can be made by wire

bonding (eg suffix ‘G’ in CR0805G) or by reflow soldering of

wrap-around terminations (eg suffix ‘F’ in CR0805F).

The ‘F’ terminations provide good 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

260°C. This enables the resistor to be mounted on one side

of a printed circuit board and other wire-leaded components

on the other side.

Packaging

Wrap-around Termination

Chip resistors are supplied taped and reeled on standard

8mm tape to IEC 286-3.

Quantity per reel; 3000 max.

Planar Terminations

Resistor chips are supplied in waffle packs.

Application Notes

Type CR0805 10M B

Resistance value

(IEC62 code)

Tolerance

(IEC62 code)

B 0.1%

C2%

D5%

Ordering Procedure

Specify type reference, value and tolerance as shown in this example of CR0805 10M 0.1%:

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