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Transient Voltage Suppression Diodes
Axial Leaded – 3kA > AK3 series
AK3 Series
Description
RoHS
Pb
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, which provides a clamping voltage lower than the avalanche voltage (but above the rated working voltage). 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. Agency Approvals
AGENCY AGENCY FILE NUMBER E128662
Features • Halogen-Free • RoHS compliant • Foldbak technology for superior clamping factor • Glass passivated junction • Bi-directional
Unit °C ºC kA
Maximum Ratings and Thermal Characteristics (TA=25OC unless otherwise noted)
Parameter Operating Storage Temperature Range Operating Junction Temperature Range Current Rating1
Note: 1. Rated IPP measured with 8 x 20μs pulse.
Symbol TSTG TJ IPP
Value (-)55 to 150 (-)55 to 125 3
• Ultra compact: Less than one-tenth the size of traditional discrete solutions • Very low clamping voltage • Sharp breakdown voltage • Low slope resistance
Electrical Characteristics
Standoff Voltage (VSO) Volts
30 58 66 76 380 430
Part Numbers
AK3 - 030C AK3 - 058C AK3 - 066C AK3 - 076C AK3 - 380C AK3 - 430C
Max. Reverse Leakage (IR) @VSO µA
20 20 20 20 20 20
Reverse Breakdown Voltage (VBR) @ IT Min Volts Max Volts
32 64 72 85 401 440 37 70 80 95 443 490
Test Current IT (mA)
10 10 10 10 10 10
Max. Clamping Voltage Max. Temp Max. Agency VCL @ Ipp Peak Pulse Coefficient Capacitance Approval Current (IPP) (Note 1) OF VBR 0 Bias 10kHz VCL Volts
90 110 120 140 520 625
IPP Amps
3,000 3,000 3,000 3,000 3,000 3,000
(%/OC)
0.1 0.1 0.1 0.1 0.1 0.1
(nF)
11 6 6 6 2 2 X X X X X X
Note: Using 8 x 20µS wave shape as defined in IEC 61000-4-5.
AK3 Series
133 Revision: October 19, 2011, 16:35
©2011 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to http://www.Littelfuse.com/series/AK3.html for current information.
Datasheet pdf - http://www.DataSheet4U.net/
AK3 Series
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Transient Voltage Suppression Diodes
Axial Leaded – 3kA > AK3 series
Soldering Parameters
Reflow Condition - Temperature Min (Ts(min)) Pre Heat - Temperature Max (Ts(max)) - Time (min to max) (ts) Average ramp up rate (Liquidus Temp (TL) to peak TS(max) to TL - Ramp-up Rate Reflow - Temperature (TL) (Liquidus) - Time (min to max) (ts) Lead–free assembly 150°C
Temperature (T)
tp
Ramp-up Critical Zone TL to TP
TP
200°C 60 – 180 secs 3°C/second max 3°C/second max 217°C 60 – 150 seconds 260+0/-5 °C 20 – 40 seconds 6°C/second max 8 minutes Max. 280°C
TL Ts(max)
tL
Ts(min)
Ramp-down
Preheat
ts
.