Page 1
SEMICONDUCTOR
500 mW LL-34 Hermetically
Sealed Glass Zener Voltage
Regulators
Absolute Maximum Ratings TA = 25°C unless otherwise noted
Parameter Value Units
Power Dissipation 500 mW
Storage Temperature Range -65 to +150 °C
Operating Junction Temperature +150 °C
These ratings are limiting values above which the serviceability of the diode may be impaired.
Specification Features:
Zener Voltage Range 3.0 to 27 Volts
LL-34 (Mini-MELF) Package
Surface Device Type Mounting
Hermetically Sealed Glass
Compression Bonded Construction
All External Surfaces Are Corrosion Resistant And Terminals Are Readily Solderable
RoHS Compliant
Matte Tin (Sn) Terminal Finish
Color band Indicates Negative Polarity
Electrical Characteristics TA = 25°C unless otherwise noted
VZ @ IZT
(Volts) Device Type
Min Max
IZT
(mA)
ZZT @ IZT
()
Max
IR @ VR
(A)
Max
VR
(Volts)
ZMM3V0 2.8 3.2 5 95 50 1
ZMM3V3 3.1 3.5 5 95 25 1
ZMM3V6 3.4 3.8 5 90 15 1
ZMM3V9 3.7 4.1 5 90 10 1
ZMM4V3 4.0 4.6 5 90 5 1
ZMM4V7 4.4 5 5 80 3 2
ZMM5V1 4.8 5.4 5 60 2 2
ZMM5V6 5.2 6 5 40 1 2
ZMM6V2 5.8 6.6 5 10 3 4
ZMM6V8 6.4 7.2 5 15 2 4
ZMM7V5 7.0 7.9 5 15 1 5
ZMM8V2 7.7 8.7 5 15 0.7 5
ZMM9V1 8.5 9.6 5 15 0.5 6
ZMM10V 9.4 10.6 5 20 0.2 7
ZMM11V 10.4 11.6 5 20 0.1 8
ZMM12V 11.4 12.7 5 25 0.1 8
ZMM13V 12.4 14.1 5 30 0.1 8
ZMM15V 13.8 15.6 5 30 0.05 10.5
ZMM16V 15.3 17.1 5 40 0.05 11.2
ZMM18V 16.8 19.1 5 45 0.05 12.6
ZMM20V 18.8 21.2 5 55 0.05 14
Cathode Anode
ELECTRICAL SYMBOL
ZM
M
3
V
0
t
hr
ou
g
h
Z
M
M
2
7
V
DEVICE MARKING DIAGRAM
Cathode Band Color : Blue
SURFACE MOUNT
LL34
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Page 2
SEMICONDUCTOR
Electrical Characteristics TA = 25°C unless otherwise noted
VZ @ IZT
(Volts) Device Type
Min Max
IZT
(mA)
ZZT @ IZT
()
Max
IR @ VR
(A)
Max
VR
(Volts)
ZMM22V 20.8 23.3 5 55 0.05 15.4
ZMM24V 22.8 25.6 5 70 0.05 16.8
ZMM27V 25.1 28.9 2 80 0.05 18.9
VF Forward Voltage = 1.5 V Maximum @ IF = 100 mA for all types
Notes:
1. The type numbers listed have zener voltage min/max limits as shown and have a standard tolerance on the nominal zener
voltage of 5%.
2. For detailed information on price, availability and delivery of nominal zener voltages between the voltages shown and tighter
voltage tolerances, contact your nearest Tak Cheong Electronics representative.
3. The zener impedance is derived from the 60-cycle ac voltage, which results when an ac current having an rms value equal to
10% of the dc zener current (IZT or IZK) is superimposed to IZT or IZK.
Package Outline
Package Case Outline
LL34
LL-34
Millimeters Inches DIM
Min Max Min Max
A 3.30 3.60 0.130 0.142
B 1.40 1.50 0.055 0.059
C 0.35 0.50 0.014 0.020
Notes:
1. All dimensions are within DO213AC JEDEC standard.
2. LL-34 polarity denoted by cathode band.
B
C
A
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