Microsemi Corporation MLL748A, MLL747A, MLL746A, MLL746A-1, MLL757A Datasheet

...

MSC0291.PDF 04-20-00

8700 E. Thomas Road Scottsdale, AZ 85252 Phone: (480) 941-6300 Fax: (480) 947-1503

MLL746A,-1 thru MLL759A,-1

and

MLL4370A,-1 thru MLL4372A,-1

±1% and ±2% Versions

“C” and “D” Available

Features

• Leadless Package For Surface Mount Technology

• Ideal For High Density Mounting

• Voltage Range 2.4 To 12 Volts

• Hermetically Sealed, Double Slug Glass Construction

• Metallurgically Bonded Construction Available as Dash One.

•

Available in JAN, JTX, JTXV-1 To Mil-PRF-19500/127 (UR-1 Suffix)

MILLIMETERS INCHES

DIM MIN MAX MIN MAX

A 3.30 3.70 .130 .146 B 1.60 1.70 .063 .067 U 0.41 0.55 .016 .022

LEADLESS GLASS

ZENER DIODE

SURFACE MOUNT

Mechanical Characteristics

Case:

Hermetically sealed glass with solder

contact tabs at each end.

Finish:

All external surfaces are corrosion

resistant, readily solderable.

Polarity:

Banded end is cathode.

Thermal Resistance:

100°C/Watt Maximum junction to end caps for "-1" construction and 150°C/W maximum junction to end caps for commercial.

Mounting Position:

Any

Weight: 0.04 gm

Maximum Ratings

500 mW DC Power Dissipation (See Power Derating Curve In Figure 1)

-55°C to +175°C Operating and Storage Junction Temperature

Application

This surface mountable zener diode series is similar to the 1N746 thru 1N759 in the DO-35 equivalent package except that it meets the new JEDEC surface mount outline DO-213AA. It is an ideal selection for applications of high density and low parasitic requirements. Due to its glass hermetic qualities, it may also be considered for high reliability applications.

Electrical Characteristics @ 25°

MICROSEMI

PART

NUMBER

NOMINAL

ZENER

VOLTAGE

@ I

(NOTE 1)

ZENER

TEST

CURRENT

MAXIMUM

ZENER

IMPEDANC

@ I

(NOTE 2)

MAXIMUM

REVERSE CURRENT

@ V

= 1 VOLT

@25

°°°°

C @ +150

°°°°

MAXIMUM

ZENER

CURRENT

(NOTE 4)

TYPICAL

TEMP

COEFF. OF

ZENER

VOLTAGE

αααα

** VOLTS mA OHMS

µµµµ

°°°°

MLL4370A 2.4 20 30 100 200 150 - .085 MLL4371A 2.7 20 30 75 150 135 - . 080 MLL4372A 3.0 20 29 50 100 120 - . 075

MLL746A 3.3 20 28 10 30 110 - .066 MLL747A 3.6 20 24 10 30 100 - .058 MLL748A 3.9 20 23 10 30 95 - .046 MLL749A 4.3 20 22 2 30 85 - .033 MLL750A 4.7 20 19 2 30 75 - .015 MLL751A 5.1 20 17 1 20 70

±±±±

.010 MLL752A 5.6 20 11 1 20 65 +.030 MLL753A 6.2 20 7 .1 20 60 +.049 MLL754A 6.8 20 5 .1 20 55 +.053 MLL755A 7.5 20 6 .1 20 50 +.057 MLL756A 8.2 20 8 .1 20 45 +.060 MLL757A 9.1 20 10 .1 20 40 +.061 MLL758A 10.0 20 17 .1 20 35 +.062 MLL759A 12.0 20 30 .1 20 30 +.062

Note 1 Voltage measurements to be performed 20 seconds after application of dc test current.

Note 2 Zener impedance derived by superimposing on I

at 60 Hz rms ac current

equal to 10% I

(2 mA ac).

Note 3 Allowance has been made for the increase in V

due to ZZ and for the increase in junction temperature as the unit approaches thermal equilibrium at the power dissipation at 500 mW.

** Ordering Information:

1) Commercial: MLL746A thru MLL759A or MLL746A-1 thru MLL759A-1 MLL4370A thru MLL4372A or MLL4370A-1 thru MLL4372A-1

2) Military: JAN, JANTX, or JANTXV 1Nxxxx UR-1

3) Tight tolerance "C" suffix = ±2%, "D" suffix = ±1%

DO-213AA

Package Dimensions In Inches

MSC0291.PDF 04-20-00

MLL746A,-1 thru MLL759A,-1

and

MLL4370A,-1 thru MLL4372A,-1

±1% and ±2% Versions

“C” and “D” Available

100

200

300

0 20 40 60 80 100 120 140 160 180 200

220

At Zero Volts

At - 2 Volts (VR)

0.2

0.4

0.6

0.8

1.0

1.2

1.4

0 20 40 60 80 100 120 140 160 180 200

Dash 1

Metalurgically Bonded

Non-Dash 1

TEC End Cap Case Temperature (ºC)

FIGURE 1

= Power Dissipation

STEADY STATE POWER DERATING

ZENER IMPEDANCE (Ohms)

ZENER CURRENT (mA)

FIGURE 2

ZENER IMPEDANCE VS ZENER CURRENT

(TYPICAL)

CAPACITANCE vs VZ CURVE

ZENER VOLTAGE V

FIGURE 3

CAPACITANCE VS ZENER VOLTAGE

(TYPICAL)

TYPICAL CAPACITANCE IN PICOFARADS