®
TAK CHEONG
SEM IC O N DU C TO R
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
TCZM4728A
TCZM4729A
TCZM4730A
TCZM4731A
TCZM4732A
TCZM4733A
TCZM4734A
TCZM4735A
TCZM4736A
TCZM4737A
TCZM4738A
TCZM4739A
TCZM4740A
TCZM4741A
TCZM4742A
TCZM4743A
TCZM4744A
TCZM4745A
TCZM4746A
Number: DB-249
Oct. 2013/ C
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
(Ω)
(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
(Ω)
Max
400
400
400
400
500
550
600
700
700
700
700
700
700
700
700
700
700
700
700
I
R
@ V
R
(μA)
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
Page 1
TCZM4728A through TCZM4758A
®
TAK CHEONG
SEM IC O N DU C TO R
Electrical Characteristics
Device Type
TCZM4747A
TCZM4748A
TCZM4749A
TCZM4750A
TCZM4751A
TCZM4752A
TCZM4753A
TCZM4754A
TCZM4755A
TCZM4756A
TCZM4757A
TCZM4758A
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
(Ω)
(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
(Ω)
Max
750
750
750
750
1000
1000
1000
1000
1500
1500
1500
2000
IR @ VR
(μA)
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. TOLERANCE AND TYPE NUMBER DESIGNATION (V
Z
)
The type numbers listed have a standard tolerance on the nominal zener voltage of
±
5%. Device tolerance of
±2%
is indicated by a
“C” instead of an “A”.
2. SPECIALS AVAILABLE INCLUDE
Nominal zener voltages between the voltages shown and tighter voltage, for detailed information on price, availability and delivery,
contact you nearest Tak Cheong representative.
3. ZENER VOLTAGE (V
Z
) MEASUREMENT
The zener voltage (V
Z
) is tested under pulse condition.
4. ZENER IMPEDANCE (Z
Z
) DERIVATION
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 on I
ZT
or I
ZK.
Number: DB-249
Oct. 2013/ C
Page 2
®
TAK CHEONG
SEM IC O N DU C TO R
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
This datasheet presents technical data of Tak Cheong’s Zener Diodes. Complete specifications for the individual devices are
provided in the form of datasheets. A comprehensive Selector Guide is included to simplify the task of choosing the best set of
components required for a specific application. For additional information, please visit our website
http://www.takcheong.com.
Although information in this datasheet has been carefully checked, no responsibility for the inaccuracies can be assumed by Tak
Cheong. Please consult your nearest Tak Cheong’s sales office for further assistance.
Tak Cheong reserves the right to make changes without further notice to any products herein to further improve reliability,
function or design, cost and productivity.
TAK CHEONG
Number: DB-249
Oct. 2013/ C
®
and
are registered trademarks of Tak Cheong Electronics (Holdings) Co., Ltd.
Page 3
