Zener Voltage Regulator
I
F
V
I
I
R
I
ZT
V
R
V
Z
V
F
1PMT5920B Series
http://onsemi.com
2
MAXIMUM RATINGS
Rating Symbol Value Unit
DC Power Dissipation @ T
A
= 25°C (Note 1)
Derate above 25°C
Thermal Resistance, Junction−to−Ambient
°P
D
°
R
q
JA
500
4.0
248
°mW
mW/°C
°C/W
Thermal Resistance, Junction−to−Lead (Anode)
R
q
Janode
35 °C/W
Maximum DC Power Dissipation (Note 2)
Thermal Resistance from Junction−to−Tab (Cathode)
°P
D
°
R
q
Jcathode
3.2
23
W
°C/W
Operating and Storage Temperature Range T
J
, T
stg
−55 to +150 °C
Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit
values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,
damage may occur and reliability may be affected.
1. Mounted with recommended minimum pad size, PC board FR−4.
2. At Tab (Cathode) temperature, T
tab
= 75°C
ELECTRICAL CHARACTERISTICS (T
L
= 25°C unless
otherwise noted, V
F
= 1.5 V Max. @ I
F
= 200 mAdc for all types)
Symbol Parameter
V
Z
Reverse Zener Voltage @ I
ZT
I
ZT
Reverse Current
Z
ZT
Maximum Zener Impedance @ I
ZT
I
ZK
Reverse Current
Z
ZK
Maximum Zener Impedance @ I
ZK
I
R
Reverse Leakage Current @ V
R
V
R
Reverse Voltage
I
F
Forward Current
V
F
Forward Voltage @ I
F
ELECTRICAL CHARACTERISTICS (T
L
= 30°C unless otherwise noted, V
F
= 1.25 Volts @ 200 mA)
Device*
Device
Marking
Zener Voltage (Note 3)
I
ZT
I
R
@ V
R
V
R
Z
ZT
@ I
ZT
(Note 4)
Z
ZK
@ I
ZK
(Note 4)
I
ZK
V
Z
@ I
ZT
(Volts)
Min Nom Max (mA)
(mA)
(V)
(W) (W)
(mA)
1PMT5920BT1, T3,G 20B 5.89 6.2 6.51 60.5 5.0 4.0 2.0 200 1.0
1PMT5921BT1, T3,G 21B 6.46 6.8 7.14 55.1 5.0 5.2 2.5 200 1.0
1PMT5922BT1, T3,G 22B 7.12 7.5 7.88 50 5.0 6.0 3.0 400 0.5
1PMT5923BT1, T3,G 23B 7.79 8.2 8.61 45.7 5.0 6.5 3.5 400 0.5
1PMT5924BT1, T3,G 24B 8.64 9.1 9.56 41.2 5.0 7.0 4.0 500 0.5
1PMT5925BT1, T3,G 25B 9.5 10 10.5 37.5 5.0 8.0 4.5 500 0.25
1PMT5927BT1, T3,G 27B 11.4 12 12.6 31.2 1.0 9.1 6.5 550 0.25
1PMT5929BT1, T3,G 29B 14.25 15 15.75 25 1.0 11.4 9.0 600 0.25
1PMT5930BT1, T3,G 30B 15.2 16 16.8 23.4 1.0 12.2 10 600 0.25
1PMT5931BT1, T3,G 31B 17.1 18 18.9 20.8 1.0 13.7 12 650 0.25
1PMT5933BT1, T3,G 33B 20.9 22 23.1 17 1.0 16.7 17.5 650 0.25
1PMT5934BT1, T3,G 34B 22.8 24 25.2 15.6 1.0 18.2 19 700 0.25
1PMT5935BT1, T3,G 35B 25.65 27 28.35 13.9 1.0 20.6 23 700 0.25
1PMT5936BT1, T3,G 36B 28.5 30 31.5 12.5 1.0 22.8 28 750 0.25
1PMT5939BT1, T3,G 39B 37.05 39 40.95 9.6 1.0 29.7 45 900 0.25
1PMT5941BT1, T3,G 41B 44.65 47 49.35 8.0 1.0 35.8 67 1000 0.25
3. Zener voltage is measured with the device junction in thermal equilibrium with an ambient temperature of 25°C.
4. Zener Impedance Derivation Z
ZT
and Z
ZK
are measured by dividing the AC voltage drop across the device by the AC current applied. The
specified limits are for I
Z
(ac) = 0.1 I
Z
(dc) with the ac frequency = 60 Hz.
* The “G” suffix indicates Pb−Free package available.