Radial Ceramic Case Resistors

Wirewound / Metal Oxide

SQM / CVF / CVW Series

Radial Ceramic Case Resistors

Wirewound / Metal Oxide

05 . 08

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SQM Series

Termination Details:

Material

The 100% Sn finish copper lead wires are internally welded to the resistance element end caps.

Solderability

The terminations meet the requirements of IEC 115-1 Clause 4.17.3.2

Strength

The terminations meet the requirements of IEC 86.2.21

Marking: Type reference, resistance value and tolerance are legend marked onto the upper surface.

Flammability: The resistor will not burn under any condition of applied temperature or overload.

Solvent resistance: The body protection and marking are resistant to all normal industrial solvents suitable for printed

circuits.

Performance Data

Maximum

Load at rated power (1000hrs at 70°C)

ΔR

Derating from rated power at 70°C

See Graph

ΔR

5% +0.05Ώ

Damp heat steady state (56 days, 40°C, ≥90% RH)

ΔR

5% +0.05Ώ

Temperature rapid change (5 cycles -55ºC to +155ºC)

ΔR

2% +0.05Ώ

Resistance to solder heat

ΔR

1% +0.05Ώ

Voltage Proof (1kV for 60s)

No evidence of flashover, mechanical damage,

arcing or insulation breakdown

Solderability

Min. 95% coverage

Derating Curve

Ordering Procedure

Example: SQM3 at 1.2 kilohms and 5% tolerance bulk packed in a box of 3000 pieces –

S Q M 3 – 1 K 2 J B 3

Type

Value (use IEC62 code)

Tolerance (use IEC62 code)

J

5%

Packing

B3

Bulk

SQM2, 3

3000 / box

Standard

B2

SQM5

2000 / box

B1

SQM7, 10

1000 / box

0%

100%

T (°C)

70

155

275

60%

-55

P/Pr

<100K: 5%

≥100K: 10%

short term overload (lesser of 6.25 x Pr or 2.5 x LEV for 5s)

Make Possible

09.14

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.ttelectronicsresistors.com