Current Rating Thermal Derating Curve

120

100

80

60

40

20

0

50

85

75

100

115

130

145

155

TEMPERATURE OF THE BACKPLATE (°C)

These resistors must be attached to a suitable heat sink. The maximum

internal resistor temperature is +155 °C.

How To Order

PSD220S - 50 - R050 F T

Model

PSD220S

Power Rating

30 = 30 W

50 = 50 W

Resistance Value Code

<100 Ω: “R” represents decimal point

(example: R005 = 0.005 Ω, 5R00 = 5.00 Ω,

92R0 = 92 Ω)

≥100 Ω: First three digits are significant,

fourth digit represents number of zeros to follow

(example: 2000 = 200 Ω, 3002 = 30 KΩ)

Resistance Tolerance

F = ±1 %

G = ±2 %

J = ±5 %

TCR (PPM/°C)

W = ±500

V = ±400

T = ±300

X = ±100

S = ±50

Temperature Coefficient

7000

2000

-3000

-8000

-50

-25

0

25

50

75

100

125

TEMPERATURE (°C)

100 PPM/°C

50 PPM/°C

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.

DIMENSIONS:

MM

(INCHES)

Suggested Layout

12.10

(.476)

18.33

(.722)

1.76

(.069)

5.08

(.200)

3.20

(.126)

11.16

(.439)

Typical Part Marking

PSD220S-50

10R0 1%

MANUFACTURER’S

TRADEMARK

POWER RATING

MODEL

RESISTANCE CODE:

“R” REPRESENTS

DECIMAL POINT

(EXAMPLES: R050 = 0.05 Ω,

10R0 = 10 Ω)

RESISTANCE

TOLERANCE

PSD220S Series – Riedon™ SMD Power Resistors by Bourns