Metal Foil on Ceramic Chip Resistors

MFC Series

10.20

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

www.ttelectronics.com/resistors

BI Technologies IRC Welwyn

Test

Maximum

Operational Life

MIL-STD-202 Method 108

1000 hours, steady state, T

A=125°C

at de-rated power

±ΔR%

1

Short Term Overload

IEC-60115-1

4.13

Pr<2W; 5 x Pr for 5 seconds

Pr=2W; 4 x Pr for 5 seconds

±ΔR%

1

Biased Humidity

MIL-STD-202 Method 103

1000 hours, 85°C, 85%RH, 10% of Pr

±ΔR%

1

High Temperature Exposure

MIL-STD-202 Method 108

1000 hours, 155°C

±ΔR%

0.5

Operation at Low Temperature

IEC-60115-1

4.36

-55°C, 45 mins Pr, 15 mins no load

±ΔR%

1

Temperature Rapid Change

IEC-60115-1

4.19

-55°C to +155°C, 5 cycles

±ΔR%

1

Voltage Proof

IEC-60115-1

4.7

1.42 x max operating voltage for 1 minute

±ΔR%

No breakdown

or flashover

Board Flex

JIS-C-521-1

4.33

3mm deflection for 5 seconds

±ΔR%

1

Solderability

IEC-60115-1

4.17

245±5°C for 3 seconds

>95% coverage

Resistance to Solder Heat

MIL-STD-202 Method 210

260±5°C for 10 seconds

±ΔR%

1

Leaching

JIS-S-5201-1 4.18

IEC-60068-2-58 8.2.1

260±5°C for 30 seconds

±ΔR%

>90% coverage

Resistance to Solvents

MIL-STD-202 Method 215

Aqueous wash OKEM or equivalent.

No banned solvents.

No damage

Performance Data

Thermal Performance Data

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.

BI Technologies IRC Welwyn

www.ttelectronics.com/resistors

© TT Electronics plc

06.18

High Pulse Double-Sided

Chip Resistors

HDSC Series

1

2

H D S C 2 5 1 2

- 1 0 K J T 1 8

Thermal Performance Data

Packaging

0603, 0805 and 1206 resistors are supplied on 8mm carrier tape and 2010 and 2512 resistors are supplied on 12 mm carrier tape,

all on 7 inch reels as per IEC 286-3.

ApplicationNotes

HDSC 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

HDSC can be immersed in the solder bath for 30 seconds

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

side

Ordering Procedure

of a printed circuit board and wire-leaded components

applied on the other side. HDSC is compatible with

typicalPb-freesolderingmaterialsandtemperature

profiles.

HDSC 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.

Example: HDSC2512-10KJT18 (HDSC2512, 10 kilohms ±5%, Pb-free)

3

4

5

1

Type

2

Size

3

4

Tolerance

5

Termination & Packing

HDSC 0603

E24 = 3/4 characters

R = ohms

K = kilohms

M = megohms

J = ±5%

Standard Pb-free finish

0805

K = ±10%

T3

0805

3000/reel standard

1206

M = ±20%

1206

2010

2010

2512

T18

2512

1800/reel standard

T1 All sizes

1000/reel available

SnPb finish

PB All sizes Standard quantities as for Pb-free