Which kind of diode?

[klitgt]

Hi
In a PSU feeding an audio buffer, a diode has broken down and allows current to run both directions.
I do not know which type to replace it with.
It is a small 4mm long and 1.5mm thick glass thing, dark orange with the printing C16PH.
Does anyone know what it is, a Zener or what??
Would be happy for a reply

 

[AndrewT]

Hi,
it could be a signal diode or zener.
Could you post a schematic?
maybe someone else recognises the code?

 

[jondavis]

try to find it at datasheetcatalog.com

 

[klitgt]

Hi,
it could be a signal diode or zener.
Could you post a schematic?
maybe someone else recognises the code?

Does this help? I can not see what T2 is.

 

[Mr Evil]

Those diodes are surely Zener's, acting as voltage references buffered by the transistors.

 

[Netlist]

It's a Philips diode. C16PH is a type code for BZX55-C16, BZX79-C16 or BZV85-C16 depending on the power requirements.
Replacing with BZV85-C16 (1Watt) will surely meet the SOA needs.

/Hugo

 

[klitgt]

try to find it at datasheetcatalog.com

Tried, but no matches. Google did not either come up with anything useful. Here is a photo. Thank's to those who gave suggestions, if no further replies I trust all you who participated.

 

[Netlist]

Provided info comes from ECA

/Hugo

 

[klitgt]

It's a Philips diode. C16PH is a type code for BZX55-C16, BZX79-C16 or BZV85-C16 depending on the power requirements.
Replacing with BZV85-C16 (1Watt) will surely meet the SOA needs.

/Hugo

Please explain this, SOA needs? I am naive in many of those expressions. The only one I know is IMHO = In My Humble Opinion, right?

 

[Netlist]

In fact I hate abbreviations as much as you do.
SOA: Safe Operation Area. Someone had to explain this to me in the past as well.
In this particular case a 1 Watt Zener will be plenty as far as power dissipation is concerned.

/Hugo

 

[Leolabs]

U can try to replace it with a normal 16V/1W zener