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Switching Diodes
MA2C178, MA2C179
Silicon epitaxial planar type
Unit : mm
For high-speed switching circuits
0.45 max.
I Absolute Maximum Ratings Ta = 25C
0.2 max.
Parameter Reverse voltage (DC) Repetitive peak reverse voltage MA2C178 MA2C179 MA2C178 MA2C179
Symbol VR VRRM IF(AV) IFRM IFSM Tj Tstg
Rating 40 80 40 80 200 600 1 200 -55 to +200
Unit V
2
V
1.75 max.
Average forward current Repetitive peak forward current Non-repetitive peak forward surge current* Junction temperature Storage temperature Note) * : t = 1 s
mA mA A C C
1 : Cathode 2 : Anode JEDEC : DO-34
I Electrical Characteristics Ta = 25C
Parameter Reverse current (DC) MA2C178 MA2C179 MA2C178 MA2C179 MA2C178 MA2C179 Forward voltage (DC) Terminal capacitance Reverse recovery time* VF Ct trr IR IR2 VR = 35 V VR = 75 V VR = 35 V, Ta = 150C VR = 75 V, Ta = 150C IF = 200 mA VR = 0 V, f = 1 MHz IF = 10 mA, VR = 1 V Irr = 0.1 * IR, RL = 100 500 500 100 100 1.1 4 20 V pF ns A nA Symbol IR1 VR = 15 V Conditions Min Typ Max 50 Unit nA
Note) 1. Rated input/output frequency: 50 MHz 2. * : trr measuring circuit
I Cathode Indication
Type No. Color 1st Band 2nd Band MA2C178 MA2C179 Violet White Violet Green
13 min.
2.2 0.3
* Large forward current IFRM * High switching speed * Small terminal capacitance, Ct
1st Band 2nd Band
0.2 max.
13 min.
I Features
COLORED BAND INDICATES CATHODE
1
1
MA2C178, MA2C179
Switching Diodes
Common characteristics charts IF V F
103
Bias Application Unit N-50BU tr
Input Pulse tp 10% t IF
Output Pulse
102
trr t Irr = 0.1 * IR IF = 10 mA VR = 1 V RL = 100
Forward current IF (mA)
A
VR Pulse Generator (PG-10N) Rs = 50 W.F.Analyzer (SAS-8130) Ri = 50
10
90% tp = 2 s tr = 0.35 ns = 0.05
1
Ta = 150C 100C 25C
trrmeasuring circuit
10-1
- 20C
10-2
0
0.2
0.4
0.6
0.8
1.0
1.2
Forward voltage VF (V)
Characteristics charts of MA2C178 IR T a
102 102 Ta = 150C 10
IR V R
1.2
VF Ta
Reverse current IR (A)
Reverse current IR (A)
15 V 1
Forward voltage VF (V)
VR = 35 V
10 100C 1
1.0 IF = 200 mA 0.8
0.6
10 mA
10-1
10-1
0.4
3 mA
10-2
10-2
25C
0.2
10-3
0
40
80
120
160
10-3
0
10
20
30
40
50
0 -40
0
40
80
120
160
Ambient temperature Ta
(C)
Reverse voltage VR
(V)
Ambient temperature Ta (C)
Characteristics charts of MA2C179
102
IR T a
102 VR = 75 V
IR V R
10
Ta = 150C
Ct VR
f = 1 MHz Ta = 25C
Terminal capacitance Ct (pF)
50
10
5
15 V 10
Reverse current IR (A)
Reverse current IR (A)
100C 1
3 2
1
1
10-1
10-1 25C 10-2
0.5 0.3 0.2
10-2
10-3
0
40
80
120
160
10-3
0
10
20
30
40
0.1
0
10
20
30
40
50
Ambient temperature Ta (C)
Reverse voltage VR (V)
Reverse voltage VR (V)
2

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