Document
MLL4099-MLL4135 MLL4614-MLL4627
® MOTOROLA
II
LOW NOISE LEVEL SIUCON PASSIVATED ZENER DIODES
· .. designed for 250 mW applications requiring low leakage. low impedance. and low noise.
• Leadless Package for Surface Mount Technology
• Voltage Range from 1.B to 100 Volts
• First Leadless Zener Diode Series to Specify Noise - 50% Lower than Conventional Diffused Zeners
• Zener Impedance and Zener Voltage Specified for Low-Level
Operation at IZT = 250 /LA • Low Leakage Current - IR from 0.01 to 10 /LA over Voltage
Range
• Available in Bmm Tape and Reel Tl Cathode Facing Sprocket Holes T2 Anode Facing Sprocket Holes
MAXIMUM RA11NOS
Rating
DC Power Dissipation @ TA = 25°C Derate above 25°C
Junction and Storage Temperature Range
Symbol Po
TJ. Tsta
Value
250 1.43
-65 to +200
Unit
mW mWrC
°c
MECHANICAL CHARACTERISTICS
CASE: Double slug, hermetically sealed glass MAXIMUM LEAD TEMPERATURE FOR SOLDERING PURPOSES:
230°C for 10 seconds FINISH: All external surfaces are corrosion resistant and readily
solderable POLARITY: Cathode indicated by color band. When operated in the
zener mode, cathode will be positive with respect to anode MOUNT1NG POSmON: Any
250
~ 200
oz
~150 <>-
~
<:> 100
~
,p 50 o o
POWER TEMPERATURE DERATING CURVE
'" """"'~ ...... "i'.......
25 50 75 100 125 150 175 TA. AMBIENT TEMPERATURE (OC)
SIUCON LEADLESS GLASS ZENER DIODES
1±5.0% TOLERANCE) 250 MILLIWATTS 1.8-100 VOLTS SILICON NITRIDE
PASSIVATED JUNCTION
MILLIMETERS INCHES DIM MIN MAX MIN MAX A 3.30 3.70 0.130 0.146
B 1.60 1.70 0.063 0.067 R 2.49 2.59 0.098 0.102 U 0.41 0.55 0.016 0.022
CASE 362-01
4-92
MLL4099 thru MLL4135, MLL4614 thru MLL4627
ELECTRICAL CHARACTERISTICS (At 25°C Ambient temperature unless otherwise specified) IZT = 250 pA and VF = 1.0 V max @ IF = 200 mA on all Types
Type Number (Note 1)
MLL4614 MLL4615 MLL4616 MLL4617 MLL4618 MLL4619 MLL4620 MLL4621 MLL4622 MLL4623 MLL4624 MLL4625 MLL4626 MLL4627 MLL4099 MLL4100 MLL4101 MLL4102 MLL4103 MLL41 04 MLL410S MLL4106 MLL4107 MLL4108 MLL4109 MLL4110 MLL4111 MLL4112 MLL4113 MLL4114 MLL4115 MLL4116 MLL4117 MLL4118 MLL4119 MLL4120 MLL4121 MLL4122 MLL4123 MLL4124 MLL4125 MLL4126 MLL4127 MLL4128 MLL4129 MLL4130 MLL4131 MLL4132 MLL4133 MLL4134 MLL4135
Nominal Zenar Voitaga
Vz (Note 1) (Volts)
1.8 2.0 2.2 2.4 2.7 3.0 3.3 3.6 3.9 4.3 4.7 5.1 5.6 6.2 6.8 7.S 8.2 8.7 9.1 10 11 12 13 14 1S 16 17 18 19 20 22 24 25 27 28 30 33 36 39 43 47 51 56 60 62 68 75 82 87 91 100
Ma.Zener Impedance
ZZT (Note 2) (Ohms)
1200 1250 1300 1400 1500 1600 1650 1700 1650 1600 1550 1500 1400 1200 200 200 200
200 200 200 200 200 200 200 100 100 100 100 150 150 150 150 150 150 200 200 200 200 200 250 250 300 300 400 500 700 700 800 1000 1200 1500
Ma. Reverse Cunent
IR (pA)
7.5 5.0 4.0 2.0 1.0 0.8 7.5 7.5 5.0 4.0 10 10 10 10 10 10 1.0 1.0 1.0 1.0 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.01 0.01 0,01 0.01 0,01 0.01 0.01 0.01 0,01 0.01 0.01 0.01 0.01 0,01 0,01 0.01 0,01 0.01 0.01 0.01 0,01 0.01
(Note 3)
Test Voltage
VR (Vohs)
1.0 1.0 1.0 1.0 1.0 1.0 1.5 2.0 2.0 2.0 3.0 3.0 4.0 5.0 5.2 5.7 6.3 6.7 7.0 7.6 8.5 9.2 9.9 10.7 11.4 12.2 13.0 13.7 14.5 15.2 16.8 18.3 19.0 20.5 21.3 22.8 25.1 27.4 29.7 32.7 35.8 38.8 42.6 45.6 47.1 51.7 57.0 62.4 66.2 69.2 76.0
Ma. Noise Density
=At IZT 250 pA
ND (Fig 1) (mlcro-yolts per Square Root Cycle)
1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 2.0 4.0 5.0 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40
Ma. Zener Cunent
IZM (Nota 4)
(mA)
120 110 100 95 90 85 80 75 70 65 60 55 50 45 35 31.8 29.0 27.4 26.2 24.8 21.6 20.4 19.0 17.5 16.3 15.4 14.5 13.2 12.5 11.9 10.8 9.9 9.5 8.8 8.5 7.9 7.2 6.6 6.1 5.5 5.1 4.6 4.2 4.0 3.8 3.5 3.1 2.9 2.7 2.6 2.3
NOTE 1: TOLERANCE AND VOLTAGE DESIGNATION The type numbers shown have a standard tolerance of
±5.0% on the nominal zener voltage.
NOTE 2: ZENER IMPEDANCE (ZZT) DERIVATION The zener impedance is derived from the 1000 cycle ac volt-
age, which results when an ac current having an rms value equal to 10% of the dc zener current (lZT) is superimposed on
IZT'
.NOTE3:REVERSELEAKAGECURRENTIR
Reverse leakage currents are guaranteed and are measured at VR as shown on the table.
NOTE 4: MAXIMUM ZENER CURRENT RATINGS (lZM)
Maximum zener current ratings are based on maximum zener voltage of the individual units.
II
4-93
MLL4099 thru MLL4135, MLL4614 thru MLL4627
ZENER NOISE DENSITY
A zener diode generates noise when it is biased in the zener direction. A small part of this noise is due to the internal resistance associated with the device. A larger part of zener noise is a result of the zener breakdown phenomenon and is called microplasma noise. This microplasma noise is generally considered "white" noise with equal amplitude for all frequencies from about zero cycles to approximately 200,000 cycles. To eliminate the higher frequency components of noise a small shunting capacitor can be used. The lower frequency noise generally must be tolerated since a c.