Vacuum Tube - 5U4GB, JJ Electronics
The JJ Electronic 5U4GB is an excellent choice for an economically priced tube rectifier. Used in many Hi-Fi and guitar amplifiers, JJ delivers a robust and solidly built tube. This full wave rectifier will work in any 5U4 application.
SKU:
T-5U4GB-JJ
Item ID:
004567
UPC/EAN:
797734820966
JJ Electronics Part Number:
5U4GB
Brand:
JJ Electronics
Type:
RoHS Compliant
Accessory Items:
| Body Height | 105 mm | |
| Filament Current (If) | 3 A | |
| Filament Voltage (Uf) | 5 V | |
| Item Diameter | 38 mm | |
| Item Height | 120 mm |
| Packaging Dimensions | 1.6 in. × 1.6 in. × 5.6 in. | |
| Weight (Packaging) | 0.14 lbs. |
 Specification Sheet | All Models |
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Specifications, Files, and Documents
Questions and Answers
Click each question to see its answers.
2 answers
Does this tube have five pins on the bottom?
Asked by Anonymous on February 16th, 2016.
February 17th, 2016
Staff MemberTop Contributor
Yes, there are five pins.
Thanks
1 answers
Will this tube replace 5U4GE?
Asked by Anonymous on October 28th, 2016.
October 28th, 2016
Staff Member
According to our tube substitution handbook, the 5U4GB is not a replacement for the 5U4GE.
1 answers
Is this a replacement for the 5U4G?
Asked by Anonymous on December 20th, 2016.
December 20th, 2016
Staff Member
Yes, this is a replacement for the 5U4G.
1 answers
Will I have to rebias my Mesa Boogie Dual Rectifier 100 watt amp head after I put these in.
Asked by Anonymous on December 20th, 2016.
December 20th, 2016
Staff Member
No, the only time you might need to rebias is when you are replacing power tubes.
1 answers
Can I run this in my Fender 68 custom Deluxe Reverb re-issue, or do I have to get a 5y3-g or a 5r4gb? I want to soften the attack some.
Asked by Anonymous on October 23rd, 2017.
October 25th, 2017
Staff Member
This is something we would not recommend as the 5U4GB runs at a higher filament current and you run the risk of overheating your transformer and damaging your amp.
1 answers
mine just says 5U4 will this work?
Asked by Anonymous on May 1st, 2018.
May 1st, 2018
Staff Member
The 5U4 and 5U4GB are substitutes.
1 answers
will this replace a 5U4GB tube for a Hammond organ?
Asked by Anonymous on July 31st, 2021.
August 2nd, 2021
Staff Member
Yes, these can be used to replace 5U4GBs in Hammond organs.
1 answers
Are these tubes compatible with my Mesa triple rectifier?
Asked by Anonymous on May 25th, 2022.
May 25th, 2022
Staff Member
These will work in any situation that calls for a 5U4. Mesa Triple Rectifiers do use 5U4s, so these will work in them.
1 answers
Hello, Would this tube be a good choice for a dual rectifier amp. Thank you
Asked by nad0104 on February 15th, 2023.
February 15th, 2023
Staff Member
These are good in any situation that calls for a 5U4. Mesa Dual Rectifiers do use 5U4s.
Substitute Products
The following items can be substituted for this product. While not necessarily exactly the same, they will function as replacement items in your project.
Product Reviews
Good long lasting replacement tube.
Got these to replace tubes damaged in transit inside an amp. Identical replacements that work as expected. Shipment and delivery were timely and quick, and well packed.
Great tubes, great price and fast shipping! These guys are the best!!
Very nice sounding tube, sorta' luscious, sweet, and full range. My NOS favorite 5U4GB used to be a Tung Sol, but this out-performs NOS tubes in my two stage direct coupled amps. I LOVE what a DIRECTLY heated rectifier tube does. I have been told the Electro Harmonix 5U4GB ( handled by Antique Electronic, and reasonably priced !! ) has a little more " snap " to it, dynamically, but I was also told it takes 200 Hours of playing to break-in to full bloom. This JJ takes maybe only 15 hours to break in - in my DC SET amp circuits. Amazing, two modern tubes that each beat the old timers.
i bought this tube for a 68 fender bandmaster reverb works great .