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Metal Film
Fusing Resistors, ERQA, Z

Metal Film Fusing Resistors
Type: ERQA
ERQZ

(0.25 W, 0.5 W, 1 W, 2 W coating type)

■ Features






Accurate fusing
Small size and lightweight
Uniform quality, consistent performance and reliability
Flame retardant, utilizing exclusive silicon insulation material
Reference Standard
EIAJ RC-2125
● RoHS compliant

■ Constructionand Materials

Lead wire

Metal alloy film

Spiraling turns
Insulative lacquer

Ceramic core
Marking

End cap

Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
01 Aug. 2012

– 66 – Metal Film
Fusing Resistors, ERQA, Z
■ Explanation of Part Numbers
1

2

Product Code
Metal Film
Fusing Resistors

3

Power Rating at
70 °C amb.
0.25 W
14
0.5 W
12
1
2

1W
2W

4

5

6

Special Feature
A
Standard
Z Less than 2

AB
Z

7

8

10

Resistance Value
The first two digits are
significant figures of
resistance and the third
one denotes number ofzeros following.Decimal
point is expressed by R as
2.2=2R2.

Resistance
Tolerance
J

9

±5 %

Standard
Less than 2

11

12

Suffix for Packaging and/or
Cut & Formed Leads
Nil
P
P···S
E
W···E

Std.bulk packing
P type cut & formed
P···S type cut & formed
Radial Taped & Box
Radial Taped & Box

The above example shows a standard Metal Film Fusing Resistors, 2 W powerrating, resistance value of 100 Ω, tolerance of ±5 %, and package of
standard bulk packing.

■ Ratings

Type

ERQ14Z
ERQ14A
ERQ12Z
ERQ12A
ERQ1Z
ERQ1AB
ERQ2Z
ERQ2AB

Dielectric
Maximum
Power
Open Maximum With- Resistance
Rating
Circuit Overload standing Tolerance
at 70°C
(1)
Voltage
Voltage Voltage
(%)
(W)
(V)
(V)
0.25

200

0.5

250

1

250

2

250

AC 3503 times of
rated
(2)
voltage

J (± 5)

AC 350

J (± 5)

AC 600

J (± 5)

AC 1000

J (± 5)

Resistance
Range (Ω)
min.

max.

1.0
2.0
1.0
2.0
1.0
2.0
1.0
2.0

Standard Marking
Mass
T.C.R.
Resistance Method (Weight)
-6
(×10 /°C)
Values on Body [g/pc.]

1.8
470
1.8
560
1.8
560
1.8
560

±350

E24

±350

E24

±350

E24

±350

E24Color
0.24
code (0.53 lbs.)
Stamp
0.32
Color code (0.71 lbs.)
0.64
Stamp
(1.41 lbs.)
1.54
Stamp
(3.35 lbs.)

(1) Maximum Open Circuit Voltage: Referring to the maximum value of the voltage applied between terminals of the resistor when the resistor is
opened in an electric circuit 1000 times power rating or voltage specified above whichever less is regarded as the maximum open circuitvoltage.
(2) Rated Continuous Working Voltage (RCWV) shall be determined from RCWV=√Power Rating × Resistance Value

Power Derating Curve
For resistors operated in ambient temperatures above
70 °C, power rating shall be derated in accordance
with the figure on the right.

120
Rated load (%)

100

–30 °C

70 °C
ERQ1
ERQ2

80
60
40

ERQ14
ERQ12

150 °C

20
0
–60 –40 –20 0130 °C
20 40 60 80 100 120 140 160 180 200 220
Ambient temperature (°C)

Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
01 Aug. 2012

– 67 –

Metal Film
Fusing Resistors, ERQA, Z
■Dimensions in mm (not to scale)
Dimensions (mm)

Type
fD

L

0D

L
+1.5
–1.0

2.3

30.0

±0.5

30.0

±1.0

30.0

±1.0

38.0

ERQ14

6.3

ERQ12

9.0 –1.0

+1.5

12.0 –1.0

+1.5

15.0

±1.5

0.65

±3.0

0.80

±3.0

5.5

0.65

±3.0

4.0

ERQ2

±3.0

2.8

ERQ1

fd

0d

k

±0.5

±0.05

0.80

±0.05
±0.05
±0.05

■...
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