Document
4.3 .169
4.4 .173
2.1 .083
mm inch
14
23
RoHS compliant
Normally closed SOP4-pin type of 60V/350V/400V
load voltage
(AQY410S, 414S) (AQY412S)
GU SOP 1 Form B
(AQY41❍S)
FEATURES
1. Small SOP4-pin package The device comes in a super-miniature SO package 4-pin type measuring (W) 4.3×(L) 4.4×(H) 2.1 mm (W) .169×(L) .173×(H) .083 inch 2. Low on-resistance The AQ❍4 series (normally closed type) has a low on-resistance. This has been achieved thanks to the built-in MOSFET processed by our proprietary method, DSD (Doublediffused and Selective Doping) method.
Cross section of the normally-closed type of power MOS
Passivation membrane
Source electrode Gate electrode
Intermediate insulating
membrane
N+ P+ N+
N+ P+ N+
Gate oxidation membrane
N– N+
Drain electrode
3. Controls low-level analog signals PhotoMOS feature extremely low closedcircuit offset voltage to enable control of low-level analog signals without distortion. 4. Low-level off-state leakage current of max..