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Aideepen 10PCS 1N34A 1N34 Germanium Diode DO-7

4.1 4.1 out of 5 stars 77 ratings
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  • The 1N34A is a stander point contact germanium diode
  • The diode is a high impedance diode which takes little power to allow current to flow in one direction only
  • They are used in crystal radio sets that have no outside power input
  • The 1N34A germanium diode is used for the detection of the rectifying efficiency or for the switching on of a AM/FM radio, TV, or stereo
  • Note: If the 1N34A germanium diode is rusty that you received, please don't worry. It is a normal situation due to has different material, it will not impact your project
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Customer reviews

4.1 out of 5 stars
77 global ratings

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Customers say

Customers are satisfied with the product's functionality. They find it effective for crystal radios and much more sensitive than solid germanium. However, opinions differ on its value for money.

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FunctionalityValue for money
6 customers mention "Functionality"6 positive0 negative

Customers like the functionality of the electronic component. They say it works well, is effective for crystal radios, and the diode is more sensitive and effective than solid germanium.

"Tested all of them for crystal diode radio. All worked great. Very loud as compared to others I have used." Read more

"I purchased this to build an RF/ Audio signal probe. It has worked perfectly. Another reviewer has included a pic of curve tracer result...." Read more

"Appears to be real germanium. Works as expected. Vf distribution is all over the place, from 110mV-350mV" Read more

"Very effective for a crystal radio. This point contact germanium diode is more sensitive and much more effective than solid germanium." Read more

6 customers mention "Value for money"3 positive3 negative

Customers have mixed opinions about the value for money. Some say it's great, while others mention that the values vary wildly between diodes and units.

"They seem to be the real deal and do what what they're supposed to do...." Read more

"...Barrier voltage is very high (should be 0.25 v) and varies considerably between units...." Read more

"Great value..." Read more

"The values vary wildly between diodes and the IV curve is very shallow for a 1N34a." Read more

As advertised I checked it on a curve tracer and ...
5 out of 5 stars
As advertised I checked it on a curve tracer and ...
As advertisedI checked it on a curve tracer and it checked out as germanium
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Top reviews from the United States

  • Susan Diane Coleson
    5.0 out of 5 stars great diode
    Reviewed in the United States on January 6, 2021
    Verified Purchase
    Tested all of them for crystal diode radio. All worked great. Very loud as compared to others I have used.
    One person found this helpful
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  • dani p
    5.0 out of 5 stars The only part of a radio you don't already have.
    Reviewed in the United States on April 21, 2020
    Verified Purchase
    I can hardly believe I can order an item for a few bucks and have it shipped from China, but I did. It took a while, however these diodes are barely made anywhere these days. They looked legit to me on the oscilloscope.
    I plan on making a few radios with them. I also thought it would be good to sew into clothing for covert/disaster resilience. A lot better than a blackened razor blade anyway.
    One person found this helpful
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  • Jimbo
    5.0 out of 5 stars Worked Good
    Reviewed in the United States on February 5, 2020
    Verified Purchase
    They seem to be the real deal and do what what they're supposed to do. I can't vouch for the consistency as I've only used one out of the pack but the one I used worked great. Happy with purchase.
    One person found this helpful
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  • PixelSmith
    3.0 out of 5 stars Inconsistent quality
    Reviewed in the United States on December 31, 2019
    Verified Purchase
    They seem to be genuine but I can't confirm that. I can confirm that the forward voltage is all over the place on the 10 pieces I received with one of them measuring over 1.8v. At least there's some decently matched pairs in there and I only needed a couple so I should be able to use these.
    Customer image
    PixelSmith
    3.0 out of 5 stars Inconsistent quality
    Reviewed in the United States on December 31, 2019
    They seem to be genuine but I can't confirm that. I can confirm that the forward voltage is all over the place on the 10 pieces I received with one of them measuring over 1.8v. At least there's some decently matched pairs in there and I only needed a couple so I should be able to use these.
    Images in this review
    Customer image
    Customer image
    4 people found this helpful
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  • Amazon Customer
    5.0 out of 5 stars Yes. This is Germanium.
    Reviewed in the United States on October 4, 2018
    Verified Purchase
    I purchased this to build an RF/ Audio signal probe. It has worked perfectly. Another reviewer has included a pic of curve tracer result. Their review confirmed what I was looking for and to them I say "Thank you!!"
    One person found this helpful
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  • John Mruz
    1.0 out of 5 stars Totally Unacceptable product
    Reviewed in the United States on June 3, 2021
    Verified Purchase
    Very poor quality. Barrier voltage is very high (should be 0.25 v) and varies considerably between units. Visual with microscope showed one piece with point contact area located on the side of the chip. Supplier has serious inspection and quality problems.
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  • Amazon Customer
    4.0 out of 5 stars Real Germanium Diodes..but
    Reviewed in the United States on January 5, 2019
    Verified Purchase
    These diodes were real Germanium diodes in long clear glass cylinder with cat whisker, but the VF is all over the place. Out of all 10 diodes the VF ranged from .286 to .690 but was able to cherry pick the best ones for use in RF circuit. So in the end if you need Germanium diodes similar to 1n34a (did not say on diode) on the cheap then get these as they are real, just not as good as the original 1n34a diodes.
    4 people found this helpful
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  • jashiel
    5.0 out of 5 stars Great value
    Reviewed in the United States on October 28, 2020
    Verified Purchase
    Using the products for a home made crystal radio set - arrived as described and early - great product and service.
    One person found this helpful
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