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The KB262 is a voltage stabilizer diode that contains 2 junctions (the KB362 has 3 junctions). This means the forward voltage drop of a single KB262 will be higher than a single 1N4148. For each KB262, you would need roughly two 1N4148's.

The choice of diode (voltage drop) there depends on the capacitance/volt on the varactors, and the capacitance needed depends on the crystal and tuning requirements. Not every radio is the same there.

The best thing to do when a diode is missing in that spot is to try to figure out what was there originally (voltage drop wise) and find a replacement based on that requirement while trying to stick with a part having similar If (forward current) vs Vf (forward voltage drop).

Mouser has surface mount stabilizers in stock, and what I would recommend is the CMXSTB400. It is a 6 pin dip and contains 4 silicon diodes in series with each junction tapped so you could choose what voltage drop you want for that application.

<blockquote data-quote="brandon7861" data-source="post: 812323" data-attributes="member: 53724">The KB262 is a voltage stabilizer diode that contains 2 junctions (the KB362 has 3 junctions).&nbsp; This means the forward voltage drop of a single KB262 will be higher than a single 1N4148.&nbsp; For each KB262, you would need roughly two 1N4148&#039;s.The choice of diode (voltage drop) there depends on the capacitance/volt on the varactors, and the capacitance needed depends on the crystal and tuning requirements.&nbsp; Not every radio is the same there.The best thing to do when a diode is missing in that spot is to try to figure out what was there originally (voltage drop wise) and find a replacement based on that requirement while trying to stick with a part having similar If (forward current) vs Vf (forward voltage drop).Mouser has surface mount stabilizers in stock, and what I would recommend is the CMXSTB400.&nbsp; It is a 6 pin dip and contains 4 silicon diodes in series with each junction tapped so you could choose what voltage drop you want for that application.</blockquote>

[QUOTE="brandon7861, post: 812323, member: 53724"] The KB262 is a voltage stabilizer diode that contains 2 junctions (the KB362 has 3 junctions). This means the forward voltage drop of a single KB262 will be higher than a single 1N4148. For each KB262, you would need roughly two 1N4148's. The choice of diode (voltage drop) there depends on the capacitance/volt on the varactors, and the capacitance needed depends on the crystal and tuning requirements. Not every radio is the same there. The best thing to do when a diode is missing in that spot is to try to figure out what was there originally (voltage drop wise) and find a replacement based on that requirement while trying to stick with a part having similar If (forward current) vs Vf (forward voltage drop). Mouser has surface mount stabilizers in stock, and what I would recommend is the CMXSTB400. It is a 6 pin dip and contains 4 silicon diodes in series with each junction tapped so you could choose what voltage drop you want for that application. [/QUOTE]

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