# EPROM Eraser

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#### NaN

##### New Member
Does anyone here know how to build a (hopefully) cost effect alternate to the EPROM Erasers that can be purchased from vendors like DigiKey?

They want 100+  for a light-bulb in a box! And approximately 60$more than i think is fair. So im wondering if anyone has tips/or experience(s) with home made alternates and/or success stories? Thanks NaN #### Mosfet ##### New Member Doesn't DigiKey sell the 'Datarase'? It's about$40. I bought one years ago that still works.
The light bulb is much more powerful than your average bulb.
If you have a germicidal or HID light you could use that.
Be sure to protect your eyes.

#### NaN

##### New Member
Not that i found online anyways...

This is the only article i found under U/V eraser:

:NaN:

#### kinjalgp

##### Active Member
I built my own UV eraser using 11W Philips Germicidal UV lamp. But I did not use it for long, since FLASH based microcontrollers and memories were found to be much cheaper and easy to use i.e. read/write/erase than EPROMs.

#### Mosfet

##### New Member
It appears an era is ending.
EPROMs were so impressively engineered.
One could see the fine gold wires and wafer through the quartz window.
I'm getting all misty.
Oh well, they they were a nuisance to erase and would get stuck bits.

#### NaN

##### New Member
I agree. I would prefer EEPROM if i could get the chip i want this way. But the best prototyping chip pic offers for its USB PIC series (16C7XX) is the EPROM u/v eraseable. While i have a suitable EEPROM programmer, i dont have the budget to throw out 30 chips unitill i get it right with their OTP's (windowless EPROM) (( :roll: ))

Ah well thanks for the suggestions!
:NaN:

#### kinjalgp

##### Active Member
Whay don't you try their Flash/EEPROM Versions i.e. 16Fxx, 18Fxx ,17Fxx etc. They use Flash ROMs which are electrically erasable and reprogrammable upto 1000 - 10,000 times.

#### Mosfet

##### New Member
I noticed a bunch of EPROM erasers on Ebay,
of course with all the risks of buying there.
But these guys are a known retailer:
\$45 [ three left ]

#### NaN

##### New Member
Thanks for the E-Bay tip. I will look into it and weigh my odds.

As for EEPROM (flash), yes, i would love to go this route, but Microchip doesnt make a USB PIC chip (16C745/16C765) with flash (why is beyond me!).

Life would be so much simpler with a 18F745.

:NaN:

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