P.O. BOX 609

• ROCKPORT, MAINE 04856 • 207-236-6076 • FAX 207-236-9558

LOW LEVEL ZENER DIODES

SHARP KNEE, LOW IMPEDANCE

K511 - K681

•• Unique manufacturing process

•• Remarkably sharp breaking diodes

•• Very low impedances at low current levels

•• Lowest values of impedance ever achieved at the 250uA level

NOMINAL

DYNAMIC IMPEDANCE

REVERSE CURRENT

PART

ZENER VOLTAGE

MAX Zz

MAX Zzk

@ 25° C

NUMBER

@ Iz = 250µA

@ Iz = 250 µA

@ Iz = 1 mA

MAX Ir

Vr

(Vdc)

(OHMS)

(OHMS)

(µA)

(Vdc)

K511

5.1

50

15

.05

2.5

K561

5.6

45

15

.05

3.5

K621

6.2

35

18

.05

5.6

K681

6.8

25

18

.05

6.4

Package Style

DO-7

DC Power Dissipation

@ Ta = 50° C

250 mW

Derate above 50° C

2 mW / °C

Forward Voltage Drop

@ If = 100 mA

1.3 Vdc

Operating Temperature (Topr)

-65 to + 175° C

Storage Temperature (Tstg)

-65 to + 200° C

Voltage Tolerance:

Standard Device

±10%