SM/1xx Series - Riedon™ Precision Axial Wirewound Resistors by Bourns

Specifications

Specification

Value

Tolerances

±0.005 % to ±1 % (See Derating Curve)

Standard Temperature Coefficients1

(TCR)

from 1 Ω to 5 Ω : ±50 PPM/°C

greater than 5 Ω to 10 Ω : ±30 PPM/°C

greater than 10 Ω to 100 Ω : ±20 PPM/°C

greater than 100 Ω : ±10 PPM/°C

Temperature Range

-55 °C to +245 °C (See Derating Curve)

Termination Finish

100 % Matte Tin over Copper

1

Contact Bourns.for other options. TCR down to ±2 PPM/°C may be available on request.

Power Derating Curves

180

160

140

120

100

80

60

40

20

0

0

20

40

60

80

100

120

140

160

AMBIENT TEMPERATURE (°C)

1 % / 0.5 % / 0.1 % Tolerance

0.05 % / 0.02 % Tolerance

0.01 % Tolerance

0.005 % Tolerance

Factory Options

Fast Rise Time - These resistors are

available in a low reactance design for fast

rise time and extended frequency response.

High Stability - These resistors are available

in a high stability version with maximum

resistance change of ±20 PPM/year under

normal conditions.

Wide TCR Range - These resistors are

available in low and high TC configurations

from -20 PPM/°C to +6000 PPM/°C.

Contact Bourns

for these options.

REV. 09/25

Specifications are subject to change without notice.

Users should verify actual device performance in their specific applications.

The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.

How To Order

SM6 - 25R X 1

Model

(See Specifications Table)

Resistance Code

For values ≤10K

Ω, “R”

represents decimal point

(Example: 25R = 25 Ω)

For values >10K

Ω, “K”

represents decimal point

(Example: 1K5 = 1.5K Ω)

Tolerance (%)

Y** = ±0.005 U = ±0.05 D = ±0.5 J = ±5

X** = ±0.01 B = ±0.1 F = ±1

K = ±10

W** = ±0.02 T = ±0.2 G = ±2

V** = ±0.025 C = ±0.25 H = ±3

Internal Use

(Specific TCR values are available upon

request.)

**Contact Bourns for tolerances <±0.01 %.

Packaging Specifications

SM2-SM15..........................100 pcs. bulk

100-102, 120, 121, 139A....100 pcs. bulk

106-108, 129 ........................25 pcs. bulk

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