MELF Silicon Planar Power Zener Diodes stabilizing clipping circu
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ZM4728 THRU ZM4764
MELF
Silicon Planar Power Zener Diodes stabilizing clipping circuits with high power rating. Standard Zener voltage tolerance ±10%. suffix tolerance. Other Zener voltages tolerances available upon request. These diodes also available DO-41 case with type designation 1N4728 1N4764.
Cathode Mark
.102 (2.6) .094 (2.4) .022 (0.55) .205 (5.2) .189 (4.8)
Dimensions inches (millimeters)
MECHANICAL DATA
Case: MELF Glass Case Weight: approx. 0.25
MAXIMUM RATINGS
Ratings 25°C ambient temperature unless otherwise specified.
SYMBOL
VALUE
UNIT
Zener Current (see Table "Characteristics") Power Dissipation Tamb 25°C Junction Temperature Storage Temperature Range Ptot 1.0(1) +150 Watts
Characteristics Tamb
SYMBOL MIN. TYP. MAX. UNIT
Thermal Resistance Junction Ambient Forward Voltage
RthJA
170(1)
°C/W
Volts
NOTES: Valid provided that electrodes kept ambient temperature
12/16/98
ZM4728 THRU ZM4764
ELECTRICAL CHARACTERISTICS
Ratings 25°C ambient temperature unless otherwise specified.
Type ZM4728 ZM4729 ZM4730 ZM4731 ZM4732 ZM4733 ZM4734 ZM4735 ZM4736 ZM4737 ZM4738 ZM4739 ZM4740 ZM4741 ZM4742 ZM4743 ZM4744 ZM4745 ZM4746 ZM4747 ZM4748 ZM4749 ZM4750 ZM4751 ZM4752 ZM4753 ZM4754 ZM4755 ZM4756 ZM4757 ZM4758 ZM4759 ZM4760 ZM4761 ZM4762 ZM4763 ZM4764
Nominal Zener voltage(3)
Test current
Maximum Zener impedance(1)
Maximum reverse leakage current 11.4 12.2 13.7 15.2 16.7 18.2 20.6 22.8 25.1 27.4 29.7 32.7 35.8 38.8 42.6 47.1 51.7 56.0 62.2 69.2 76.0
Surge current 25°C (mA) 1380 1260 1190 1070
(mA) 15.5 12.5 11.5 10.5
1000 1000 1000 1000 1500 1500 1500 2000 2000 2000 2000 3000 3000 3000
(mA) 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25
Maximum regulator current(2) (mA)
(µA)
NOTES: Zener impedance derived from 1KHZ voltage which results when current having value equal Zener current (IZT IZK) superimposed IZK. Zener impedance measured points insure sharp knee breakdown curve eliminate unstable units Valid provided that electrodes distance 10mm from case kept ambient temperature Measured under thermal equilibrium test conditions
RATINGS CHARACTERISTIC CURVES ZM4728 THRU ZM4764
ZM4728.ZM4764
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