Sampling diodes: Difference between revisions

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The original diodes are no longer available.  When sampling diodes need replacement, there are two options.  They can be scavenged from other  
The original diodes are no longer available.  When sampling diodes need replacement, there are two options.  They can be scavenged from other  
gear or replacements can be improvised using modern parts.  [[Hewlett-Packard|HP/Avago]] and now Broadcom makes integrated pairs and quads of high-speed Schottky diodes (e.g. HSMS-28xx series). These are a decent replacement for the original diodes.
gear or replacements can be improvised using modern parts.  [[Hewlett-Packard|HP/Avago]] and now Broadcom makes integrated pairs and quads of high-speed Schottky diodes (e.g. HSMS-28xx series). These are a decent replacement for the original diodes.
== recommend diode as substitute  ==
{| class="wikitable"
|-
! Type of Diode
! Unit
! reached risetime
! note
|-
| HSMS2822  || [[4S1]]    || 320 ps  || meeting specification
|-
| HSMS2822  || [[S-2]]    || 120 ps  || don't reached specification
|-
| MMDL301  || [[S-2]]  || 185 ps  || much blowby, not recommend
|-
|}


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