ZM4728A - ZM4758A
Taiwan Semiconductor
1 Version:D1804
1W, 5% Tolerance Hermetically Sealed Glass
Zener Voltage Regulators
FEATURES
● Wide zener voltage range selection: 3.3V to 56V
● Compliant to RoHS directive 2011/65/EU and
in accordance to WEEE 2002/96/EC
● Halogen-free according to IEC 61249-2-21
APPLICATIONS
● Low voltage stabilizers or voltage references
● Adapters
● On-board DC/DC converter
MECHANICAL DATA
● Case: MELF
● Terminal: Matte tin plated leads, solderable per J-STD-002
● Polarity: Indicated by cathode band
KEY PARAMETERS
PARAMETER VALUE UNIT
VZ 3.3-56 V
PD 1 W
TJ Max. 175 °C
Package MELF
Configuration Single die
ABSOLUTE MAXIMUM RATINGS
(TA = 25°C unless otherwise noted)
PARAMETER
SYMBOL
VALUE
UNIT
Power dissipation PD 1 W
Junction temperature range TJ -65 to +175 °C
Storage temperature range TSTG -65 to +200 °C
THERMAL PERFORMANCE
PARAMETER
SYMBOL
TYP
UNIT
Junction-to-ambient thermal resistance RӨJA 170 °C/W
ZM4728A - ZM4758A
Taiwan Semiconductor
2 Version:D1804
ELECTRICAL SPECIFICATIONS
(TA = 25°C unless otherwise noted)
PART NUMBER
ZENER VOLTAGE TEST
CURRENT
REGULAR
IMPEDANCE
TEST
CURRENT
LEAKAGE
CURRENT
VZ @ IZT IZT ZZT @ IZT ZZK @ IZK IZK IR @ VR
V mA Ω Ω mA µA V
Max. Max. Max.
ZM4728A 3.3 76 10 400 1.0 100 1.0
ZM4729A 3.6 69 10 400 1.0 100 1.0
ZM4730A 3.9 64 9 400 1.0 50 1.0
ZM4731A 4.3 58 9 400 1.0 10 1.0
ZM4732A 4.7 53 8 500 1.0 10 1.0
ZM4733A 5.1 49 7 550 1.0 10 1.0
ZM4734A 5.6 45 5 600 1.0 10 2.0
ZM4735A 6.2 41 2 700 1.0 10 3.0
ZM4736A 6.8 37 3.5 700 1.0 10 4.0
ZM4737A 7.5 34 4.0 700 0.5 10 5.0
ZM4738A 8.2 31 4.5 700 0.5 10 6.0
ZM4739A 9.1 28 5.0 700 0.5 10 7.0
ZM4740A 10 25 7.0 700 0.25 10 7.6
ZM4741A 11 23 8.0 700 0.25 5.0 8.4
ZM4742A 12 21 9.0 700 0.25 5.0 9.1
ZM4743A 13 19 10 700 0.25 5.0 9.9
ZM4744A 15 17 14 700 0.25 5.0 11.4
ZM4745A 16 15.5 16 700 0.25 5.0 12.2
ZM4746A 18 14.0 20 700 0.25 5.0 13.7
ZM4747A 20 12.5 22 750 0.25 5.0 15.2
ZM4748A 22 11.5 23 750 0.25 5.0 16.7
ZM4749A 24 10.5 25 750 0.25 5.0 18.2
ZM4750A 27 9.5 35 750 0.25 5.0 20.6
ZM4751A 30 8.5 40 1000 0.25 5.0 22.8
ZM4752A 33 7.5 45 1000 0.25 5.0 25.1
ZM4753A 36 7.0 50 1000 0.25 5.0 27.4
ZM4754A 39 6.5 60 1000 0.25 5.0 29.7
ZM4755A 43 6.0 70 1500 0.25 5.0 32.7
ZM4756A 47 5.5 80 1500 0.25 5.0 35.8
ZM4757A 51 5.0 95 1500 0.25 5.0 38.8
ZM4758A 56 4.5 110 2000 0.25 5.0 42.6
Notes:
1. The device numbers listed have a standard tolerance on the nomial 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 Taiwan Semiconductor 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.
ZM4728A - ZM4758A
Taiwan Semiconductor
3 Version:D1804
PART NO.
(Note 1) PACKAGE PACKING
ZM47xxA L0 MELF 5K / 13" Reel
ZM47xxA L0G MELF 5K / 13" Reel
Note:
1. "xx" defines voltage from 3.3V (ZM4728A) to 56V (ZM4758A)
ZM4728A - ZM4758A
Taiwan Semiconductor
4 Version:D1804
PACKAGE OUTLINE DIMENSION
SUGGEST PAD LAYOUT
MELF
DIM. Unit (mm) Unit (inch)
Min Max Min Max
A 4.80 5.50 0.189 0.217
B 2.25 2.67 0.089 0.105
C 0.30 0.60 0.012 0.024
DIM. Unit (mm) Unit (inch)
Typ. Typ.
C 4.80 0.189
G 3.30 0.130
X 1.50 0.059
X1 6.30 0.248
Y 2.70 0.106
ZM4728A - ZM4758A
Taiwan Semiconductor
5 Version:D1804
Notice
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assumes no responsibility or liability for any errors or inaccuracies.
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