Type

HVC

2512

-

4M7

F

T 1 8

Size

Value (use IEC62 code)

Tolerance (use IEC62 code)

Packing

D

0.5%

J

5%

F

1%

K

10%

G2%

T3

Tape

1206 or 2010

3000/reel

Standard

T18

2512

1800/reel

2.5 ± 0.5

13 ± 0.5

33 ± 1.0

Marking

(Both sides)

0.8 ± 0.15

Wr

T

High Voltage

Chip Resistors

HVC Series

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

Issue D · 11.05

Welwyn Components

86

Packaging

HVC Resistors are supplied taped and reeled as per IEC 286-3.

Tape and reel dimensions (mm)

Qty.

Wr

W

P1

P0

P2

D0

D1

E

F

A0

B0

K0

T

T1

T2

per

±0.5

±0.3

±0.1

±0.1

±0.05

±0.1

±0.2

±0.1

±0.05

±0.1

±0.1

±0.1

±0.05

Nom.

±0.15

reel

1206

9

8

4

4

2

1.5

1

1.75

3.5

1.95

3.55

1.0

0.2

0.05

1.3

3000

2010

13

12

8

4

2

1.5

1.5

1.75

5.5

2.79

5.89

0.91

0.28

0.06

1.21

3000

2512

13

12

8

4

2

1.5

1.5

1.75

5.5

3.61

6.96

1.17

0.28

0.06

1.45

1800

Ordering Procedure

Example: HVC2512 at 4.7 megohms and 1% tolerance on a reel of 1800 pieces -

Application Notes

HVC 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

HVC 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.

HVC resistors themselves can operate at a maximum

temperature of 155°C (see performance above). For soldered

resistors, the joint temperature should not exceed 110°C. This

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

The PCB layout should avoid tracks running between the HVC

mounting pads, as this would compromise the LEV.

The LEV stated applies to operation at sea-level pressure, in a

non-condensing atmosphere and non-contaminating

environment. Voltage derating should be applied if low

pressure, high humidity or contamination may be encountered.

The termination clearance dimension (B) should be used in

conjunction with the creepage limit applicable to the circuit

application in order to determine the derated LEV.