Philips Semiconductors
Quadruple ESD transient voltage suppressor
Product specification
BZA420A
FEATURES
• ESD rating >8 kV, according to IEC1000-4-2
• SOT457 surface mount package
• Common anode configuration
• Non-clamping range −0.5 to 20 V
• Maximum reverse peak power dissipation:
19.6 W at tp = 1 ms
• Maximum clamping voltage at peak pulse current:
28 V at IZSM = 0.7 A.
PINNING
PIN
1
2
3
4
5
6
cathode 1
common
cathode 2
cathode 3
common
cathode 4
DESCRIPTION
APPLICATIONS
• Computers and peripherals
• Audio and video equipment
• Communication systems
• Medical equipment.
DESCRIPTION
Monolithic transient voltage suppressor diode in a six lead
SOT457 (SC-74) package for 4-bit wide ESD transient
suppression at 20 V level.
handbook, halfpag6e
5
4
1
3
2
4
5
6
1
2
3
Top view
MAM357
Marking code: Z0.
Fig.1 Simplified outline (SOT457) and symbol.
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOL
PARAMETER
CONDITIONS
MIN.
Per diode
IZ
working current
Ts = 60 °C; note 1
−
IF
continuous forward current
Ts = 60 °C
−
IFSM
non-repetitive peak forward
tp = 1 ms; square pulse
−
current
IZSM
non-repetitive peak reverse
tp = 1 ms; square pulse; see Fig.2 −
current
Ptot
PZSM
total power dissipation
Ts = 60 °C; see Fig.3
−
non repetitive peak reverse power square pulse; tp = 1 ms; see Fig.4 −
dissipation
Tstg
storage temperature
−65
Tj
junction temperature
−65
Notes
1. Ts is the temperature at the soldering point of the anode pin.
2. DC working current limited by Ptot max.
MAX.
note 2
100
3.75
0.7
720
19.6
+150
+150
UNIT
mA
mA
A
A
mW
W
°C
°C
1999 May 20
2