Assistance indentifying component - ZKW diode

[rdenbroe]

Hello,

 

I am attempting to identify a component from a switch mode power supply out of a audio preamp.

I am 90% confident it is a zener diode, but after that I am at a loss.

 

Markings (cathode band on left):

(ST) 98

ZKW  

*not sure if there is a space between K and W, might be ZK W

 

Measurments (in mm):

2.78 W --> case
4.15 L --> case
5.30 L --> case w leads
2.11 H --> case
2.25 H --> case w leads

 

Any assistance is greatly appreciated.

 

Kind Regards,

 Rick

 

 

[Tesla DeLorean]

SM2Z200 ZKW