Description
Applications
– Semiconductor device protection: Diodes, transistors, thyristors, IC etc.
– Home electronics protection: TVs, air conditioners, refrigerators, microwave ovens, etc.
– Office automation equipment protection: PPC copiers, fax machines, PCs, etc.
– Industrial equipment protection: Robots, water heaters, machining equipment, etc.
– Inrush surge protection: Electromagnetic clutches/brakes, relay control devices, circuit breakers etc.
– Others: Automotive electronics circuits, vending machines, communication/broadcasting equipment, etc.
Rating
Z21D180 to 680
| Part No. |
Varistor voltage V1mA |
Maximum allowable voltage |
Clamping voltage (max.) V20A |
Rated power |
Maximum energy (2ms) |
Maximum peak current (8/20μs) |
Capacitance (TYP) (1kHz) |
| AC |
DC |
| V |
Vrms |
V |
V |
W |
J |
A |
pF |
| Z21D180 |
18(16～20) |
11 |
14 |
36 |
0.2 |
12 |
2,000 |
40,000 |
| Z21D220 |
22(20～24) |
14 |
18 |
43 |
14 |
30,000 |
| Z21D270 |
27(24～30) |
17 |
22 |
53 |
17 |
24,500 |
| Z21D330 |
33(30～36) |
20 |
26 |
65 |
21 |
20,000 |
| Z21D390 |
39(35～43) |
25 |
31 |
77 |
25 |
13,800 |
| Z21D470 |
47(42～52) |
30 |
38 |
93 |
30 |
13,500 |
| Z21D560 |
56(50～62) |
35 |
45 |
110 |
36 |
12,200 |
| Z21D680 |
68(61～75) |
40 |
56 |
135 |
44 |
11,500 |
Z21D820 to 102 (UL1449 (No. E331328）certified)
| Part No. |
Varistor voltage V1mA |
Maximum allowable voltage |
Clamping voltage (max.) V100A |
Rated power |
Maximum energy (2ms) |
Maximum peak current (8/20μs) |
Capacitance (TYP) (1kHz) |
| AC |
DC |
| V |
Vrms |
V |
V |
W |
J |
A |
pF |
| Z21D820 |
82(74～ 90) |
50 |
65 |
135 |
1.0 |
40 |
6,500 |
7,500 |
| Z21D101 |
100(90～110) |
60 |
85 |
165 |
50 |
6,500 |
| Z21D121 |
120(108～132) |
75 |
100 |
200 |
60 |
5,500 |
| Z21D151 |
150(135～165) |
95 |
125 |
250 |
75 |
4,500 |
| Z21D201 |
200(185～225) |
130 |
170 |
340 |
100 |
1,700 |
| Z21D221 |
220(198～242) |
140 |
180 |
360 |
110 |
1,600 |
| Z21D241 |
240(216～264) |
150 |
200 |
395 |
120 |
1,500 |
| Z21D271 |
270(247～303) |
175 |
225 |
455 |
135 |
1,300 |
| Z21D331 |
330(297～363) |
210 |
270 |
545 |
160 |
1,100 |
| Z21D361 |
360(324～396) |
230 |
300 |
595 |
180 |
1,100 |
| Z21D391 |
390(351～429) |
250 |
320 |
650 |
195 |
1,100 |
| Z21D431 |
430(387～473) |
275 |
350 |
710 |
215 |
1,000 |
| Z21D471 |
470(423～517) |
300 |
385 |
775 |
250 |
900 |
| Z21D511 |
510(459～561) |
320 |
410 |
845 |
273 |
800 |
| Z21D561 |
560(504～616) |
350 |
450 |
930 |
273 |
750 |
| Z21D681 |
680(612～748) |
420 |
560 |
1,120 |
273 |
650 |
| Z21D751 |
750(675～825) |
460 |
615 |
1,240 |
300 |
600 |
| Z21D821 |
820(738～902) |
510 |
670 |
1,355 |
325 |
530 |
| Z21D911 |
910(819～1,001) |
550 |
745 |
1,500 |
360 |
500 |
| Z21D102 |
1,000(900～1,100) |
625 |
825 |
1,650 |
400 |
450 |
Dimensions
| Part No. |
Dmax. |
Tmax. |
W1(±1) |
Hmax. |
W2(±1) |
φd |
| Z21D180 |
21.5 |
5.1 |
10.0 |
24.5 |
1.5 |
1.0 |
| Z21D220 |
5.2 |
1.6 |
| Z21D270 |
5.3 |
1.7 |
| Z21D330 |
5.5 |
1.9 |
| Z21D390 |
5.5 |
1.9 |
| Z21D470 |
5.6 |
2.0 |
| Z21D560 |
5.7 |
2.1 |
| Z21D680 |
5.8 |
2.2 |
| Z21D820 |
4.9 |
1.8 |
| Z21D101 |
5.1 |
2.0 |
| Z21D121 |
5.3 |
2.2 |
| Z21D151 |
5.6 |
2.5 |
| Z21D201 |
5.2 |
2.1 |
| Z21D221 |
5.3 |
2.2 |
| Z21D241 |
5.4 |
2.3 |
| Z21D271 |
5.6 |
2.5 |
| Z21D331 |
5.9 |
2.8 |
| Z21D361 |
6.1 |
3.0 |
| Z21D391 |
6.2 |
3.1 |
| Z21D431 |
6.4 |
3.3 |
| Z21D471 |
6.6 |
3.5 |
| Z21D511 |
6.8 |
3.7 |
| Z21D561 |
22.5 |
7.1 |
25.5 |
4.0 |
| Z21D681 |
7.8 |
4.7 |
| Z21D751 |
8.2 |
5.1 |
| Z21D821 |
8.5 |
5.4 |
| Z21D911 |
9.0 |
5.9 |
| Z21D102 |
9.5 |
6.4 |
Unit: mm
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