Littelfuse AK3 User Manual

Transient Voltage Suppression Diodes

Axial Leaded – 3kA > AK3 series

AK3 Series

Agency Approvals

AGENCY AGENCY FILE NUMBER

E128662

Maximum Ratings and Thermal Characteristics

=25°C unless otherwise noted)

(T

A

Parameter Symbol Value Unit

Operating Storage Temperature
Range

Operating Junction Temperature
Range

Current Rating

Note:

1. Rated I

PP

1

measured with 8/20μs pulse.

T

STG

T

J

I

PP

(-)55 to 150 °C

(-)55 to 125 ºC

3 kA

RoHS

Description

The AK3 series of high current transient suppressors have
been specially designed for use in A.C. line protection and
any demanding applications (AC or DC). They offer superior
clamping characteristics over standard S.A.D. technologies
by virtue of the Littelfuse Foldbak technology. Therefore,
any voltage rise due to increased current conduction is
contained to a minimum, providing the best possible
protection level. They can also be connected in series and/
or parallel to create very high capacity protection solutions.

Features

• Very low clamping voltage

• Ultra compact: less

than one-tenth the size
of traditional discrete
solutions

• Sharp breakdown voltage

• Low slope resistance

• Bi-directional

• Foldbak technology for

superior clamping factor

• Symmetric in leads width

for easier soldering during

• IEC-61000-4-2 ESD

15kV(Air), 8kV (Contact)

• ESD protection of data

lines in accordance with
IEC 61000-4-2 (IEC801-2)

• EFT protection of data

lines in accordance with
IEC 61000-4-4 (IEC801-4)

• Halogen-free

• RoHS compliant

• Glass passivated junction

assembly

Additional Information

Functional Diagram

Datasheet

Bi-directional

Electrical Characteristics.(T

Part

Numbers

AK3 - 015C 3-015C 15 10 15 16 19 10 28 3,000 0.1 9.0 X
AK3 - 030C 3-030C 30 10 15 32 37 10 90 3,000 0.1 11. 0 X
AK3 - 058C 3-058C 58 10 15 64 70 10 110 3,000 0.1 6.0 X
AK3 - 066C 3-066C 66 10 15 72 80 10 120 3,000 0.1 6.0 X
AK3 - 076C 3-076C 76 10 15 85 95 10 140 3,000 0.1 6.0 X
AK3 - 150C 3-150C 150 10 15 15 8 194 10 230 3,000 0.1 2.6 X
AK3 - 170C 3-170C 170 10 15 179 220 10 260 3,000 0.1 2.4 X
AK3 - 380C 3-380C 380 10 15 4 01 443 10 520 3,000 0.1 2.0 X
AK3 - 430C 3-430C 430 10 15 440 490 10 625 3,000 0.1 2.0 X

Note: Using 8/20µS wave shape as defined in IEC 61000-4-5.

© 2014 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 03/04/14

Marking

Part

Standoff

Voltage

(VSO)
Volts

=25°C unless otherwise noted)

A

Max.
Reverse
Leakage

(I

) @VSO

R

µA

Typical

IR @

85°C

(µA)

Voltage (VBR) @ I

Min Volts Max Volts (mA) VCL Volts IPP Amps (%/°C) (nF)

Reverse

Breakdown

Current

T

Test

Max. Clamping Voltage

VCL @ Ipp Peak Pulse

I

Current (IPP) (Note 1)

T

Resources

Max. Temp
Coefficient

OF V

BR

Samples

Max.

Capaci-

tance
0 Bias
10kHz

Agency

Approval

Transient Voltage Suppression Diodes

0

50

100

150

200

250

300

0 0.5 1 1.5 2 2.5 3 3.5 4

TIME(MINUTES)

TEMPERATURE

(

º

C)

Maximum W ave 240C

0

50

100

150

200

250

300

0 0.5 1 1.5 2 2.5 3 3.5 4

TIME(MINUTES)

TEMPERATURE

(ºC)

Maximum W ave 260C

0

20

40

60

80

100

0255075 100 125

Percent of Rated Value

T - AMBI ENT TEMPERATURE (°C)

A

Current (kA)

Voltage (V)

Axial Leaded – 3kA > AK3 series

Physical Specifications

Weight Contact manufacturer

Flow/Wave Soldering (Solder Dipping)

Peak Temperature : 265°C

Dipping Time : 10 seconds

Case Epoxy encapsulated

Terminal

Silver plated leads, solderable per
MIL-STD-750, Method 2026

Soldering : 1 time

Wave Solder Profile

Figure 1 - Non Lead-free Profile Figure 2 - Surge Response

Ratings and Characteristic Curves (T

Figure 3 - Peak Power Derating Figure 4 - Surge Response

=25°C unless otherwise noted)

A

continues on next page.

Specifications are subject to change without notice.

© 2014 Littelfuse, Inc.

Revised: 03/04/14