NXP Semiconductors
Quadruple ESD transient voltage
suppressor
Product data sheet
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
Per diode
IZ
IF
IFSM
IZSM
Ptot
PZSM
Tstg
Tj
working current
continuous forward current
non-repetitive peak forward
current
Ts = 60 °C; note 1
Ts = 60 °C
tp = 1 ms; square pulse
non-repetitive peak reverse
current
tp = 1 ms; square pulse; see Fig.2
total power dissipation
Ts = 60 °C; see Fig.3
non repetitive peak reverse power square pulse; tp = 1 ms; see Fig.4
dissipation
storage temperature
junction temperature
Notes
1. Ts is the temperature at the soldering point of the anode pin.
2. DC working current limited by Ptot max.
MIN.
−
−
−
−
−
−
−65
−65
MAX. UNIT
note 2 mA
100
mA
3.75
A
0.7
A
720
mW
19.6
W
+150 °C
+150 °C
1999 May 20
2