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

Features

n

Formerly a Riedon™ product

n

Resistances to 5 MΩ

n

Resistance tolerances to ±0.005 %

n

Non-inductive Multi-Pi cores

n

TCR to ±2 PPM/°C

n

100 % acceptance tested / traceable to NIST

n

Long term stability / 100 ppm/year

n

Matched resistance sets to ±0.001 % and

±0.5 ppm/°C

n

Flame & moisture resistant protective

encapsulation

n

RoHS compliant*

Additional Information

Click these links for more information:

PRODUCT TECHNICAL

LIBRARY

INVENTORY SAMPLES

CONTACT

DIMENSIONS:

MM

(INCHES)

*RoHS Directive 2015/863, Mar 31, 2015 and Annex.

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.

“Bourns” is a registered trademark of Bourns, Inc. in

the United States and other countries.

In April 2023, BE Services Company, Inc., a subsidiary

of Bourns, Inc., purchased certain assets of Riedon,

Inc., including its logo and trademarks and the right to

continue to manufacture former Riedon™ products.

“Riedon Logo” is a registered trademark of BE Services

Company, Inc., in the United States.

“Riedon” is a trademark of BE Services Company, Inc.

d (DIA.)

d (DIA.)

D (DIA.)

L

A

L

W

H

d (DIA.)

D (DIA.)

L

1

Other resistance values may be available; please

contact Bourns.

2

Where more than one lead diameter is listed, the

bold value is standard.

Specifications

Bourns

Model

Number

Commercial

Power

(W)

Resistance

Range

(Ω)1

Dimensions

Max.

Working

Voltage

Diameter

“D”

Length

“L”

Lead

Diameter2 “d”

SM2

0.06

1 - 75 k

2.5 ± 0.13

(.100 ± .005)

5.3 ± 0.64

(.210 ± .025)

0.5 ± 0.05

(.020 ± .002)

75

SM3

0.08

1 - 150 k

3.2 ± 0.13

(.125 ± .005)

6.6 ± 0.64

(.260 ± .025)

0.5 ± 0.05

(.020 ± .002)

0.6 ± 0.05

(.025 ± .002)

100

SM4

0.10

1 - 250 k

3.2 ± 0.13

(.125 ± .005)

9.5 ± 0.64

(.375 ± .025)

0.5 ± 0.05

(.020 ± .002)

100

SM13

0.10

1 - 250 k

4.0 ± 0.13

(.156 ± .005)

7.9 ± 0.64

(.312 ± .025)

0.5 ± 0.05

(.020 ± .002)

100

SM5

0.12

1 - 400 k

4.7 ± 0.13

(.187 ± .005)

6.4 ± 0.64

(.250 ± .025)

0.6 ± 0.05

(.025 ± .002)

150

SM6

0.15

1 - 500 k

4.7 ± 0.13

(.187 ± .005)

7.5 ± 0.64

(.295 ± .025)

0.6 ± 0.05

(.025 ± .002)

150

139A

0.15

1 - 500 k

6.4 ± 0.13

(.250 ± .005)

6.4 ± 0.64

(.250 ± .025)

0.6 ± 0.05

(.025 ± .002)

100

SM15

0.175

1 - 750 k

4.7 ± 0.13

(.187 ± .005)

9.5 ± 0.64

(.375 ± .025)

0.6 ± 0.05

(.025 ± .002)

200

SM12

0.20

1 - 750 k

4.7 ± 0.13

(.187 ± .005)

11.4 ± 0.64

(.450 ± .025)

0.6 ± 0.05

(.025 ± .002)

200

100

0.20

1 - 1 M

6.4 ± 0.13

(.250 ± .005)

9.5 ± 0.64

(.375 ± .025)

0.8 ± 0.05

(.032 ± .002)

0.6 ± 0.05

(.025 ± .002)

200

SM7

0.25

1 - 1 M

5.3 ± 0.13

(.210 ± .005)

11.8 ± 0.64

(.465 ± .025)

0.6 ± 0.05

(.025 ± .002)

250

101

0.25

1 - 1.2 M

6.4 ± 0.13

(.250 ± .005)

12.7 ± 0.64

(.500 ± .025)

0.8 ± 0.05

(.032 ± .002)

0.6 ± 0.05

(.025 ± .002)

300

102

0.33

1 - 2.5 M

6.4 ± 0.13

(.250 ± .005)

19.1 ± 0.64

(.750 ± .025)

0.8 ± 0.05

(.032 ± .002)

0.6 ± 0.05

(.025 ± .002)

400

120

0.40

1 - 3.8 M

9.5 ± 0.13

(.375 ± .005)

12.7 ± 0.64

(.500 ± .025)

0.8 ± 0.05

(.032 ± .002)

300

121

0.50

1 - 3.8 M

9.5 ± 0.13

(.375 ± .005)

19.1 ± 0.64

(.750 ± .025)

0.8 ± 0.05

(.032 ± .002)

400

129

0.75

1 - 5 M

9.5 ± 0.13

(.375 ± .005)

25.4 ± 0.64

(1.000 ± .025)

0.8 ± 0.05

(.032 ± .002)

600

106

1.00

1 - 5 M

12.7 ± 0.13

(.500 ± .005)

25.4 ± 0.64

(1.000 ± .025)

0.8 ± 0.05

(.032 ± .002)

800

107

1.50

1 - 5 M

12.7 ± 0.13

(.500 ± .005)

38.1 ± 0.64

(1.500 ± .025)

0.8 ± 0.05

(.032 ± .002)

900

108

2.00

1 - 5 M

12.7 ± 0.13

(.500 ± .005)

50.8 ± 0.64

(2.000 ± .025)

0.8 ± 0.05

(.032 ± .002)

1000

LEAD LENGTH: 38.1 ± 12.7

(1.50 ± .500)

CALIFORNIA WARNING: Can expose you to

lead, a carcinogen and reproductive toxicant.

See www.P65Warnings.ca.gov