1SMA4740 Datasheet PDF - Pan Jit International

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DATA SHEET

1SMA4728~1SMA4764

SURFACE MOUNT SILICON ZENER DIODE

VOLTAGE 3.3 to 100 Volts POWER 1.0 Watts

FEATURES

• For surface mounted applications in order to optimize board space.

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• Low profile package

• Built-in strain relief

• Glass passivated junction

• Low inductance

• Typical IR less than 5.0µA above 11V

• Plastic package has Underwriters Laboratory Flammability

Classification 94V-O

• High temperature soldering : 260°C /10 seconds at terminals

• Pb free product are available : 99% Sn above can meet Rohs

environment substance directive request

SMA/DO-214AC

Unit: inch (mm)

.181(4.60)

.157(4.00)

.012(.305)

.006(.152)

MECHANICALDATA

Case: JEDEC DO-214AC,Molded plastic over passivated junction.

Terminals: Solder plated,solderable per MIL-STD-202G, Method 208

Polarity: Color band denotes positive end (cathode)

Standard Packaging:12mm tape (EIA-481)

Weight: 0.002 ounce, 0.064 gram

.060(1.52)

.030(0.76)

.008(.203)

.002(.051)

.208(5.28)

.188(4.80)

MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS

Ratings at 25°C ambient temperature unless otherwise specified.

Param eter

Pwak Pulse PowerD issipation on TA=50OC (Notes A)

D erate above 50OC

Peak Forward Surge C urrent8.3m s single halfsine-wave

superim posed on rated load (JED EC m ethod)

O perating Junction and Storage Tem perature Range

Sym bol

IFS M

TJ,TS TG

Value

1.0

6.67

-55 to + 150

U nits

W atts

m W /OC

Am ps

NOTES:

A. Mounted on 5.0mm2 (.013mm thick) land areas.

B. Measured on8.3ms, and single half sine-wave or equivalent square wave ,duty cycle=4 pulses per minute maximum.

C. Tolerance and Type Number Designation. The type numbers listed have a standard tolerance on the nominal zener

voltage of ± 5%.

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Part Number

VZ @ IZT

Nom. V Min. V Max. V

1.0 Watt ZENER Diodes -- continued

1SMA4728 3.3 3.1 3.5

1SMA4729

3.6 3.4 3.8

1SMA4730

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1SMA4731

3.9 3.7 4.1

4.3 4.1 4.5

1SMA4732

4.7 4.5 4.9

1SMA4733

5.1 4.8 5.4

1SMA4734

5.6 5.3 5.9

1SMA4735

6.2 5.9 6.5

1SMA4736

6.8 6.5 7.1

1SMA4737

7.5 7.1 7.9

1SMA4738

8.2 7.8 8.6

1SAM4739

9.1 8.6 9.6

1SMA4740

10.0

9.5 10.5

1SMA4741

11.0

10.5 11.6

1SMA4742

12.0

11.4 12.6

1SMA4743

13.0

12.4 13.7

1SMA4744

15.0

14.3 15.8

1SMA4745

16.0

15.2 16.8

1SMA4746

18.0

17.1 18.9

1SMA4747

20.0 19.0 21.0

1SMA4748

22.0

20.9 23.1

1SMA4749

24.0

22.8 25.2

1SMA4750

27.0

25.7 28.4

1SMA4751

30.0

28.5 31.5

1SMA4752

33.0

31.4 34.7

1SMA4753

36.0

34.2 37.8

1SMA4754

39.0

37.1

1SMA4755

43.0

40.9 45.2

1SMA4756

47.0

44.7 49.4

1SMA4757

51.0

48.5 53.6

1SMA4758

56.0

53.2 58.8

1SMA4759

62.0

58.9 65.1

1SMA4760

68.0

64.6 71.4

1SMA4761

75.0

71.3 78.8

1SMA4762

82.0

77.9 86.1

1SMA4763

91.0

86.5 95.6

1SMA4764

100 95.0 105

Maximum Zener Impedance

ZZT @ IZT

O mA

ZZK @ IZK

O mA

10.0 76.0 400 1.00

10.0 69.0 400 1.00

9.0 64.0 400 1.00

9.0 58.0 400 1.00

8.0 53.0 500 1.00

7.0 49.0 550 1.00

5.0 45.0 600 1.00

2.0 41.0 700 1.00

3.5 37.0 700 1.00

4.0 34.0 700 0.50

4.5 31.0 700 0.50

5.0 28.0 700 0.50

7.0 25.0 700 0.25

8.0 23.0 700 0.25

9.0 21.0 700 0.25

10.0 19.0 700 0.25

14.0 17.0 700 0.25

16.0 15.5 700 0.25

20.0 14.0 750 0.25

22.0 12.5 750 0.25

23.0 11.5 750 0.25

25.0 10.5 750 0.25

35.0 9.5 750 0.25

40.0 8.5 1000 0.25

45.0 7.5 1000 0.25

50.0 7.0 1000 0.25

60.0 6.5 1000 0.25

70.0 6.0 1500 0.25

80.0 5.5 1500 0.25

95.0 5.0 1500 0.25

110 4.5 2000 0.25

125 4.0 2000 0.25

150 3.7 2000 0.25

175 3.3 2000 0.25

200 3.0 3000 0.25

250 2.8 3000 0.25

350 2.5 3000 0.25

Maximum

Leakage

Current

IR @VR

uA V

100 1.0

50 1.0

10 1.0

10 2.0

10 3.0

10 4.0

10 5.0

10 6.0

10 7.0

10 7.6

0.1 8.4

0.1 9.1

0.1 9.9

0.1 11.4

0.1 12.2

0.1 13.7

0.1 15.2

0.1 16.7

0.1 18.2

0.1 20.6

0.1 22.8

0.1 25.1

0.1 27.4

0.1 29.7

0.1 32.7

0.1 35.8

0.1 38.8

0.1 42.6

0.1 47.1

0.1 51.7

0.1 56.0

0.1 62.2

0.1 69.2

0.1 76.0

Marking Code

728B

729B

730B

731B

732B

733B

734B

735B

736B

737B

738B

739B

740B

741B

742B

743B

744B

745B

746B

747B

748B

749B

750B

751B

752B

753B

754B

755B

756B

757B

758B

759B

760B

761B

762B

763B

764B

Package

SMA

STD-JAN.27.2005

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NOTE:

1. Tolerance and Type Number Designation. The type umbers listed have a standard tolerance on the nominal zener

voltage of + 5%

2. Specials Available Include:

A. Nominal zener voltages between the voltages shown and tighter voltage tolerances.

B. Matched sets.

3. Zener Voltage (Vz) Measurement. Guarantees the zener voltage when measured at 90 seconds while maintaining

the lead temperature (TL) at 30 oC + 1 oC, from the diode body.

4. Zener Impedance (Zz) 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 (Izt or Izk) is superimposed on Izt or Izk.

5. Surge Current (Ir) Non-Repetitive. The rating listed in the electrical characteristics table is maximum peak,

non-repetitive, reverse surge current of 1/2

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RATING AND CHARACTERISTICS CURVES

1.0

0.75

0.5

L=LEAD LENGTH

TO HEAT SINK

0.25

0 20 40 60 80 100 120 140 160 180 200

TL, LEAD TEMPERATURE (OC)

FIGURE.1 POWER TEMPERATURE DERATING CURVE

a.RANGE FOR UNITS TO 12 VOLTS

b.RANGE FOR UNITS 12 TO 100 VOLTS

FIGURE.2 TEMPERATURE COEFICIENTS

(-55OC TO +150OC TEMPERATURE RANGE; 90% OF THE UNITS ARE IN THE RANGES INDICATED.)

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FIGURE.3TYPICAL THERMAL RESISTANCE versus LEAD LENGTH

FIGURE.4 EFFECT OF ZENER CURRENT

FIGURE.5 MAXIMUM SURGE POWER

FIGURE.6 EFFECT OF ZENER CURRENT ON ZENER IMPEDANCE FIGURE.7 EFFECT OF ZENER VOLTAGE ON ZENER IMPEDANCE

STAD-JAN.27.2005

PAGE . 4

Pan Jit International	Part Number	1SMA4740
	Description	(1SMA4728 - 1SMA4764) SURFACE MOUNT SILICON ZENER DIODE
	Page	5 Pages

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