News

Rated power of pulse/surge resistant chip resistors is significantly expanded

2024.07.24

To achieve higher rated power by terminal temperature regulation

KOA's pulse-resistant chip resistors SG73P and surge-resistant chip resistors SG73S have expanded the rated power based on the revised terminal part temperature specifications.
The higher rated power of all sizes from 0402 inch to 1210 inch  has been increased, such as guaranteeing the rated power of 0.75 W for the 0805 inch size. The category power*¹ enables high power application even at high temperatures, which leads the 0805 inch size to be appled up to 0.375 W at 155°C.
The rated power is higher than that of general-purpose chip resistors (RK73 series), which contributes to miniaturization of circuits and reduction of the number of products.
AEC-Q200 Tested.


Applications:
Car electronics, power supply, industrial equipment, etc.
Please contact us for details.
Type Size (inch)  Power
Rating (W)*²
Terminal
Part Temp.
(°C)
T.C.R.
(×10-6/K)
Resistance
Range (Ω)
SG73S 1E
SG73P 1E
0402 0.33 105 ±200
1 ~ 10M
SG73P 1EW 0.33 ±100 ~ ±200
SG73S 1J
SG73P 1J
0603
0.5 ±100
SG73S 2A
SG73P 2A
0805
0.75 ±100 ~ ±200
SG73S 2B
SG73P 2B
1206  1  ±100 ~ ±200
SG73S 2E
SG73P 2E
1210  1.5  ±200
*¹ Category power: The maximum power that can be applied at the maximum operating temperature. For the SG73P/SG73S, the category power is 50% of the rated power
*² Please keep the condition that the terminal of the resistors is below the rated terminal part temperature.

Design Support Data of Anti-Pulse/Anti-Surge Chip Resistors SG73P/SG73S

Setting of category power and expanded rated power based on terminal part temperature specification

<0805inch size>

ーPrevious spec

ー New spec : Revised rated power

 

 


Category Power : Maximum power that can be applied at maximum operating temperature


The revised rated power of 0805inch size is rated at 
1.5 times the conventional one.