Double Sided

Chip Resistors

DSC Series

Double Sided

Chip Resistors

DSC Series

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

07. 08

Welwyn Components

Thermal Performance Data

Ambient Temperature/°C

125

100

75

50

25

0

-15

70

155

Temperature Derating Curve

Packaging

0603, 0805 and1206 DSC series resistors are supplied on 8mm carrier tape and 7 inch reels as per IEC 286-3, quantity per reel; 3000.

2010 and 2512 DSC series resistors are supplied on 12mm carrier tape and 7 inch reels as per IEC 286-3, quantity per reel;

2010 : 3000pcs; 2512 : 1800pcs. Reels of 1000pcs are available on request.

0

10

20

30

40

50

60

70

80

0

0.5

1

1.5

Power Dissipation (W)

Temperature Rise Curves

0805 1206

2010

2512

Packaging

0603,0805and1206resistorsaresuppliedon8mmcarriertapeand2010and2512resistorsaresuppliedon12mmcarriertape,

allon7inchreelsasperIEC286-3.

Ordering Procedure

Double Sided

Chip Resistors

DSC Series

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

07. 08

Welwyn Components

Application Notes

DSC resistors are ideally suited for handling by automatic

methods due to their rectangular shape and the small

dimensional tolerances. Electrical connection to a ceramic

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

or wave soldering of wrap-around terminations.

Wrap-around terminations provide good leach properties and

ensure reliable contact. Due to the robust construction, the

DSC 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 wire-leaded components

applied on the other side. DSC is compatible with typical

Pb-free soldering materials and temperature profiles.

DSC resistors themselves can operate at a maximum

temperature of 155°C. For soldered resistors, the joint

temperature should not exceed 110°C. This condition is met

when the stated power levels at 70°C and recommended

pad and trace areas are used. Pad and trace area is defined as

the total area of the solder pad plus all copper trace within two

squares of the edge of the solder pad. Allowance should be made

if smaller areas of copper are used.

7. Ordering Procedure – Replace with below

Example: DSC2512-10KFT18 (DSC2512, 10 kilohms ±1%, Pb-free)

8. Update header & footer branding

D S C 2 5 1 2

- 1 0 K F T 1 8

1

2

3

4

5

6

1

2

3

4

5

6

Type

Size

Anti-Sulphur

Value

Tolerance

Termination & Packing

DSC

0603

Omit for Standard

E24 = 3/4 characters

D

±0.5%

Standard Pb-free finish

0805 AS

Anti-Sulphur

E96 = 3/4 characters

F

±1%

T5

0603

5000/reel standard

1206

R = ohms

J

±5%

T3

0805

3000/reel standard

2010

K = kilohms

1206

2512

M = megohms

2010

T18

2512

1800/reel standard

T1 All sizes

1000/reel available

SnPb finish

PB All sizes Standard quantities as for Pb-free

11.16

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.

© TT Electronics plc

http://www.ttelectronics.com/resistors

BI Technologies IRC Welwyn