High Value Surface

Mounted Resistors

HR Series

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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

11. 11

High Value Surface

Mounted Resistors

HR Series

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

Performance Data

Issue B · 03.02

Welwyn Components

l

a

c

i

py

T

mum

i

x

aM

Load at rated power: 1000 hours at 70°C

∆

1

2

%R

Overload

∆

2.0

1

%R

Shelf life: 12 months at room temperature

∆

1

2

%R

Temperature rapid change

∆

3.0

1

%R

Change on Wave Soldering

∆

5.0

1

%R

005

:

6021

o

t

5080

001

:

3050

s

t

l

ov

f

oo

r

p

e

g

a

t

l

oV

Voltage coefficient of resistance (10V - 25V)

%/V

4.0

1

5080

3.0

8.0

5001

5

0.0

2.0

6021

21

Application Notes

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 to planar terminations or by reflow soldering of

wrap-around terminations. 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 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.

Packaging

Resistor chips 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.

Ordering Procedure

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

I

Tape

0805F, 1206F

Up to 3000/reel

Standard

Waffle

G Termination