3

MOTOROLA

MMQA Series

TYPICAL CHARACTERISTICS

Figure 3. Steady State Power Derating Curve

Figure 4. Pulse Derating Curve

Figure 5. 10

× 1000 ms Pulse Waveform

0

25

50

75

100

125

150

175

300

250

200

150

100

50

0

TA, AMBIENT TEMPERATURE (°C)

FR-5 BOARD

ALUMINA SUBSTRATE

100

90

80

70

60

50

40

30

20

10

0

0

25

50

75

100

125

150

175

200

TA, AMBIENT TEMPERATURE (°C)

100

50

0

01

2

3

4

t, TIME (ms)

tr

tP

PULSE WIDTH (tP) IS DEFINED

AS THAT POINT WHERE THE

PEAK CURRENT DECAYS TO 50%

OF IRSM.

tr ≤ 10 µs

HALF VALUE —

IRSM

2

PEAK VALUE — IRSM

Figure 6. 8

× 20 ms Pulse Waveform

Figure 7. Maximum Non–Repetitive Surge

Power, Ppk versus PW

Figure 8. Typical Maximum Non–Repetitive

Surge Power, Ppk versus VBR

0.1

1.0

10

100

1000

1.0

10

100

Power is defined as VRSM x IZ(pk) where VRSM

is the clamping voltage at IZ(pk).

PW, PULSE WIDTH (ms)

UNIDIRECTIONAL

RECTANGULAR

WAVEFORM, TA = 25

°C

100

90

80

70

60

50

40

30

20

10

0

020

40

60

80

t, TIME (

ms)

200

180

160

140

120

100

80

60

40

20

0

5.6

6.8

12

20

33

NOMINAL VZ

tP

tr

PULSE WIDTH (tP) IS DEFINED

AS THAT POINT WHERE THE

PEAK CURRENT DECAY = 8

ms

PEAK VALUE IRSM @ 8 ms

HALF VALUE IRSM/2 @ 20 ms

27

8

× 20 WAVEFORM AS PER FIGURE 6

10

× 100 WAVEFORM AS PER FIGURE 5