Type

Resistor dimension max

Terminal dimension

D

L

d±0.05

l±1

RY21B-0.5W

2.5

7.0

0.6

28

RY21B-1W

3.9

10.5

0.7

28

RY21B-2W

4.5

13.0

0.8

26

RY21B-3W

6.5

17.0

0.8

26

RY21B-5W

9.0

25.5

0.8

32

Type

Rated power
(W)

Resistance range(Ω)

Resistance tolerance
±(%)

TCR
±(×10^-6/℃)

Limit voltage
(DC or AC effective value)
(V)

Insulation voltage
(DC or AC peak value)(V)

RY21B

0.5

0.1Ω~1MΩ

10Ω~510KΩ；
1(F)、2(G)、
0.1Ω~1MΩ；
5(J)

350

400

500

1

0.1Ω~1MΩ

500

700

2

0.1Ω~1MΩ

500

700

3

0.1Ω~1MΩ

500

700

5

1Ω~510KΩ

600

800

Ltems

Requirements

Methods

TCR

±350×10^-6/℃

-55℃ ~+ 200℃

Endurance at 70℃

±5%R+0.1Ω

70℃ ± 2℃ V_R( or Umax) 1000h t=1min

Withstand vo ltage

Have no to broke through or fly the arc light

V-block，Infliction exchanges electric voltage, its biggest and worth for insulate the electric voltage of 1.42 times  1min

Solderability

Solder disengagement flow combine Terminal embellish

235± 5℃   2±0.5s

Over-load

±（1%R+0.05Ω）

Infliction 2.5V_R( or 2Umax) Take the small Keep on time  5s

Terminal strength

±（1%R+0.05Ω）

Pull the dint：10N
Twist：2time
Turn round：180°  2time

Resitance to soldering heat

±（1%R+0.05Ω）

350± 10℃   3.5s±0.5s

Fast temperature change

±（1%R+0.05Ω）

-55℃ ~+ 200℃  5 Circulation

Vibration

±（1%R+0.05Ω）

Frequency:10Hz~500Hz Flap: 0.75mm or 98m /s²(Take the small)
It is total to keep on time：6h

Climate category

±（5%R+0.1Ω）

Cold low atmospheric pressure circulation of dry heat circulation hot and damp( the first circulation) hot and damp( rest circulation) direct current burthen

Steady damp-heat

±（5%R+0.1Ω）

V=0.1√PR T=40± 2℃ Opposite degree of humidity (90-95)% time：56day, RH：93～98%

Endurance at upper-limit temperature

±（5%R+0.1Ω）

V=√20%PR T= 200℃ time：1000h