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 Construction |
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| 1. |
Protective coating |
| 2. |
Resistive film |
| 3. |
Inner electrode |
| 4. |
Ni plating |
| 5. |
Solder plating |
| 6. |
Ceramic substrate |
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Features |
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In normal condition, it works as a resistor
and when exessive voltage is applied, it protects circuits
by fusing quickly. |
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The same shape as RK73 series. |
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Recognized by safety standard UL1412.
(1J is not recognized.) |
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Suitable for both flow and reflow solderings. |
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Products with lead free termination meet EU-RoHS requirements , EU-RoHS requlation is
not intended for PB-glass contained in electrode , resistor element and glass . |
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Type
(Inch Size Code) |
Dimensions
(mm) |
Weight
(g)
(1000pcs) |
L 0.2 |
W |
c |
d |
t0.1 |
1J
(0603) |
1.6 |
0.8 0.1 |
0.30.1 |
0.30.1 |
0.5 |
2.14 |
2A
(0805) |
2.0 |
1.250.1 |
0.40.2 |
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4.54 |
2B
(1206) |
3.2 |
1.60.2 |
0.50.3 |
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0.6 |
9.14 |
2E
(1210) |
2.60.2 |
15.5 |
2H
(2010) |
5.0 |
2.50.2 |
24.3 |
3A
(2512) |
6.3 |
3.10.2 |
37.1 |
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RF73 |
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2B |
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T |
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TD |
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100 |
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J |
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Product Code |
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Power Rating |
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Terminal
Surface Material |
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Taping |
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Nominal Resistance |
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Resistance Tolerance |
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1J : 0.063W
2A : 0.1W
2B : 0.125W
2E : 0.25W
2H : 0.5W
3A : 1.0W |
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T : Sn
(L : Sn/Pb) |
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| TD : |
4mm pitch
punch paper |
| TE : |
4mm pitch
plastic
embossed |
| BK : |
Bulk |
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3digits |
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J : 5% |
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The terminal surface material lead free is standard.
Contact us when you have control request for environmental hazardous material other than the substance specified by EU-RoHS.
For further information on taping, please refer to Common Specification. |
| Type |
Power
Rating |
Resistance
Range ( ) (E24) |
Resistance
Tolerance |
Fusing Characteristics |
T.C.R.
(×10-6/K) |
| Fusing Power |
Fusing Time |
| 1J |
0.063W |
1  100 |
J : 5% |
— |
2.6W
1.0 |
2.4W
1.1 20 |
2.1W
22 100 |
— |
60s Max. |
+1000 -500
(1.0 3.3)
500
(3.6 100) |
| 2A |
0.1W |
0.2 510 |
3.0W
0.2 0.47 |
2.6W
0.51 1.0 |
2.4W
1.1 20 |
2.1W
22 100 |
2.0W
110 510 |
+1000 -500
(0.2 4.3)
500
(4.7 510) |
| 2B |
0.125W |
3.75W
0.2 0.47 |
2.875W
0.51 10 |
2.5W
11 24 |
2.0W
27 100 |
1.75W
110 510 |
| 2E |
0.25W |
4.5W
0.2 0.47 |
4.1W
0.51 4.7 |
3.5W
5.1 27 |
3.2W
30 100 |
3.0W
110 510 |
| 2H |
0.5W |
5.5W
0.2 0.47 |
5.0W
0.51 4.7 |
4.0W
5.1 27 |
3.5W
30 100 |
3.2W
110 510 |
| 3A |
1.0W |
6.5W
0.2 0.47 |
6.0W
0.51 4.7 |
5.0W
5.1 30 |
4.5W
33 100 |
4.0W
110 510 |
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Rated Ambient Temperature : +70
Operating Temperature Range : -55 +125 |
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For resistors operated
at an ambient temperature of 70 or above, a power
rating shall be derated in accordance with the left derating
curve. |
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One-pulse Limiting Electric Power |
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Example of Fusing Characteristics |
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Application Notes
Brush up your circuit
Basic Knowledge
