S EM ICOND UCTOR
1 Watt LL-41 Hermetically
Sealed Glass Zener Voltage
Regulators
Absolute Maximum Ratings
Parameter
Storage Temperature Range
Maximum Junction Operating Temperature
Total Device Dissipation
Thermal Resistance Junction to Ambient
T
A
= 25°C unless otherwise noted
Value
-65 to +200
+175
1.0
170
Units
°C
°C
Watt
°C / W
SURFACE MOUNT
LL-41
DEVICE MARKING DIAGRAM
Cathode Band Color: Blue
These ratings are limiting values above which the serviceability of the diode may be impaired.
Specification Features:
Zener Voltage Range 3.3 to 56 Volts
LL-41 MELF Package (JEDEC DO-213AB)
Surface Mount Devices (SMD)
Hermetically Sealed Glass
Compression Bonded Construction
All External Surfaces Are Corrosion Resistant And Terminals Are Readily Solderable
RoHS Compliant
Matte Tin (Sn) Lead Finish
Color band Indicates Negative Polarity
ELECTRICAL SYMBOL
Cathode
Anode
Electrical Characteristics
Device Type
ZM4728A
ZM4729A
ZM4730A
ZM4731A
ZM4732A
ZM4733A
ZM4734A
ZM4735A
ZM4736A
ZM4737A
ZM4738A
ZM4739A
ZM4740A
ZM4741A
ZM4742A
ZM4743A
ZM4744A
ZM4745A
ZM4746A
V
Z
@ I
ZT
(Volts)
Nominal
3.3
3.6
3.9
4.3
4.7
5.1
5.6
6.2
6.8
7.5
8.2
9.1
10
11
12
13
15
16
18
T
A
= 25°C unless otherwise noted
Z
ZT
@ I
ZT
I
ZT
I
ZK
()
(mA)
(mA)
Max
76
10
1
69
10
1
64
9
1
58
9
1
53
8
1
49
7
1
45
5
1
41
2
1
37
3.5
1
34
4
0.5
31
4.5
0.5
28
5
0.5
25
7
0.25
23
8
0.25
21
9
0.25
19
10
0.25
17
14
0.25
15.5
16
0.25
14
20
0.25
Z
ZK
@ I
ZK
()
Max
400
400
400
400
500
550
600
700
700
700
700
700
700
700
700
700
700
700
700
I
R
@ V
R
(A)
Max
100
100
50
10
10
10
10
10
10
10
10
10
10
5
5
5
5
5
5
V
R
(Volts)
1
1
1
1
1
1
2
3
4
5
6
7
7.6
8.4
9.1
9.9
11.4
12.2
13.7
Number: DB-226
Nov, 2010 / A
Page 1
ZM4728A through ZM4758A
S EM ICOND UCTOR
Electrical Characteristics
Device Type
ZM4747A
ZM4748A
ZM4749A
ZM4750A
ZM4751A
ZM4752A
ZM4753A
ZM4754A
ZM4755A
ZM4756A
ZM4757A
ZM4758A
VZ @ IZT
(Volts)
Nominal
20
22
24
27
30
33
36
39
43
47
51
56
T
A
= 25°C unless otherwise noted
ZZT @ IZT
IZT
IZK
()
(mA)
(mA)
Max
12.5
22
0.25
11.5
23
0.25
10.5
25
0.25
9.5
35
0.25
8.5
40
0.25
7.5
45
0.25
7
50
0.25
6.5
60
0.25
6
70
0.25
5.5
80
0.25
5
95
0.25
4.5
110
0.25
ZZK @ IZK
()
Max
750
750
750
750
1000
1000
1000
1000
1500
1500
1500
2000
IR @ VR
(A)
Max
5
5
5
5
5
5
5
5
5
5
5
5
VR
(Volts)
15.2
16.7
18.2
20.6
22.8
25.1
27.4
29.7
32.7
35.8
38.8
42.6
V
F
Forward Voltage = 1.2 V Maximum @
I
F
= 200 mA for all types
Notes:
1. The device numbers listed 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’s 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 (I
ZT
or
I
ZK
) is superimposed to
I
ZT
or
I
ZK.
Number: DB-226
Nov, 2010 / A
Page 2
S EM ICOND UCTOR
Package Outline
Package
B
LL- 41 MELF
DIM
LL- 41
MELF
A
A
B
C
C
Notes:
1.
2.
All dimensions are within DO-213AB JEDEC standard.
LL-41 MELF polarity denoted by cathode band.
Millimeters
Min
4.80
2.39
0.41
Max
5.20
2.66
0.55
Min
0.189
0.094
0.016
Inches
Max
0.205
0.105
0.022
Case Outline
Number: DB-226
Nov, 2010 / A
Page 3
DISC LA IMER NOTIC E
NOTICE
The information presented in this document is for reference only. Tak Cheong reserves the right to make
changes without notice for the specification of the products displayed herein.
The product listed herein is designed to be used with ordinary electronic equipment or devices, and not
designed to be used with equipment or devices which require high level of reliability and the malfunction of
with would directly endanger human life (such as medical instruments, transportation equipment, aerospace
machinery, nuclear-reactor controllers, fuel controllers and other safety devices), Tak Cheong
Semiconductor Co., Ltd., or anyone on its behalf, assumes no responsibility or liability for any damagers
resulting from such improper use of sale.
This publication supersedes & replaces all information previously supplied. For additional information, please
visit our website
http://www.takcheong.com,
or consult your nearest Tak Cheong’s sales office for further
assistance.
Number: DB-111
April 29, 2008 / A
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