Rev Date: 02/17/2021

3

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NSZ Series

Ceramic Housed Wirewound Resistor with Specialty Leads

Stackpole Electronics, Inc.

Resistive Product Solutions

Performance Characteristics

Type / Code

C

Unit

0.177 ± 0.020

0.020 ± 0.004

0.177 ± 0.020

0.033

inches

4.50 ± 0.50

0.50 ± 0.10

4.50 ± 0.50

0.85

mm

0.177 ± 0.020

0.020 ± 0.004

0.177 ± 0.020

0.033

inches

4.50 ± 0.50

0.50 ± 0.10

4.50 ± 0.50

0.85

mm

0.177 ± 0.020

0.020 ± 0.004

0.177 ± 0.020

0.033

inches

4.50 ± 0.50

0.50 ± 0.10

4.50 ± 0.50

0.85

mm

0.177 ± 0.020

0.020 ± 0.004

0.177 ± 0.020

0.033

inches

4.50 ± 0.50

0.50 ± 0.10

4.50 ± 0.50

0.85

mm

NSZ7

…-04

NSZ10

…-04

NSZ15

…-04

A

B

NSZ5

…-04

H3

Mechanical Specifications

– Lead Style 04 (cont.)

Item

Performance or Quality Acceptance

Test Method

R < 1 Ω ± 700 ppm/ºC

R

≥ 1 Ω ± 200 ppm/ºC

Change of resistance

≤ ± (2% + 0.05 Ω)

Change of resistance

≤ ± (0.5% + 0.05 Ω)

No mechanical damage.

Test voltage (AC): 1500 V

Change of resistance

≤ ± (1% + 0.05 Ω)

Tensile:

Change of resistance

≤ ± (0.5% + 0.05 Ω)

No mechanical damage.

Tensile strength: 45 N

0.5 N is applied from any direction for 10 seconds.

Change of resistance

≤ ± (1% + 0.05 Ω)

Change of resistance

≤ ± (1% + 0.05 Ω)

Change of resistance

≤ ± (5% + 0.05 Ω)

Change of resistance

≤ ± (5% + 0.05 Ω)

The resistor shall be subjected to 5 continuous cycle, each as shown

in the table below:

Rapid Change of

Temperature

In the chamber having temperature 40ºC ± 2ºC and relative humidity

93 ± 3%, apply one percent of the rated power, 1.5 hour ON, 0.5 hour OFF

for 1000 hours and leave in room temperature for one hour after test.

Damp Heat, Steady State

At room temperature, apply rated DC voltage 1.5 ON, o.5 hour OFF for

1000 hours and leave in room temperature for one hour after test.

Endurance at Room

Temperature

Apply 1.5 mm amplitude vibration to three directions perpendicular to each

other for 2 hours each, total of 6 hours. Vibrating frequency is

10 Hz - 55 Hz - 10 Hz cycle in 1 minute sweeping and repeat cycle.

Vibration

Dip the lead into a solder bath having a temperature of 260ºC ± 5ºC up to

1.5 ± 0.5 mm from the body of the resistors and hold it for 10 ± 0.5 seconds

and leave in room temperature for 24 hours after test.

Resistance to

Soldering Heat

Dip the lead into a solder bath having a temperature of 245ºC ± 5ºC

up to 1.5 ± 0.5 mm from the body of the resistors and hold it for

5 ± 0.5 seconds.

Solderability

More than 95% of the surface of

the lead shall be covered by

new solder.

Operating Temperature Range: -55ºC to +275ºC wirewound; -55ºC to + 150ºC metal oxide.

The body of the resistor is fixed, a static load is added in the direction of

drawing out of the terminal, and it maintains it for 10 ± 1 seconds.

Robustness of

Terminations

Temperature Coefficient

of Resistance

Apply DC voltage 2.5 times the rated voltage for 5 seconds.

Leave it at room temperature for 30 minutes. Then measure.

Overload (Short Time)

Lay the resistor on the flat metal plate and apply the specified voltage

between tied terminals for one minute.

Voltage Proof

Measure resistance (R0) at room temperature (t), after that, measure

again the resistance (R) at 100ºC higher than room temperature

Lay the resistor on the 90º angle metal V block and apply 500 Vdc between

V block and lead wire for a minute. The insulation resistance shall be

measured while applying the voltage.

Insulation Resistance

≥ 1000 Mohm

Temperature

Duration

1 Minimum operating temperature

30 minunes

2 Standard atmospheric condition

≤ 30 seconds

3 Maximum operating temperature

30 minunes

4 Standard atmospheric condition

≤ 30 seconds