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Description
ON SEMICONDUCTOR MJE350G Bipolar (BJT) Single Transistor, General Purpose, PNP, 300 V, 20 W, 500 mA, 240 hFEThis is a Bipolar (BJT) Single Transistor, General Purpose, PNP, 300 V, 20 W, 500 mA, 240 hFE product from ON SEMICONDUCTOR with the model number MJE350GProduct details Power Dissipation Pd 20W DC Collector Current 500mA Collector Emitter Voltage V(br)ceo 300V Transition Frequency ft Operating Temperature Max 150C Transistor Polarity PNP DC Current Gain hFE 240hFE No. of Pins 3Pins Product Range MJxxxx Series Automotive Qualification Standard
This is a Bipolar (BJT) Single Transistor, General Purpose, PNP, 300 V, 20 W, 500 mA, 240 hFE product from ON SEMICONDUCTOR with the model number MJE350GProduct details
| Power Dissipation Pd | 20W |
| DC Collector Current | 500mA |
| Collector Emitter Voltage V(br)ceo | 300V |
| Transition Frequency ft | - |
| Operating Temperature Max | 150°C |
| Transistor Polarity | PNP |
| DC Current Gain hFE | 240hFE |
| No. of Pins | 3Pins |
| Product Range | MJxxxx Series |
| Automotive Qualification Standard | - |
| Transistor Case Style | TO-225AA |
| MSL | - |
Other details
| Brand | ON SEMICONDUCTOR |
| Part Number | MJE350G |
| Quantity | Each |
| Technical Data Sheet EN | |
| Product Change Notice EN |
All product and company names are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them. Image is for illustrative purposes only. Please refer to product description.
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Exchange/Return Notes
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4.7 ★★★★★
Based on 21 reviews
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Product Reviews
★★★★★ 3
Cooling but flat
Color: Black and White
I’m assuming it should be the way it is, but it is extremely flat.
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Reviewed in the United States on December 27, 2025
★★★★★ 1
To flat dosent stay cool wish I would of ordered a more expensive one that stays cool and fluffier
Color: Black and White
Not as described wish I would of ordered a more expensive one that stays cooler and fluffer
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Reviewed in the United States on March 6, 2026
★★★★★ 5
Perfect pillow
Color: Black and White
I love this pillow! At first I was afraid it was too thick but it's perfect. I have a lot of neck issues and this pillow has stopped all the pain that I used to feel when waking up! The price is good and it works great.
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Reviewed in the United States on August 13, 2025
★★★★★ 5
Comfortable
Color: Black and White
I have slept so good after I got this pillow I wake up with no more neck pain and get a full nights rest and and love how my pillow stays nice and cool all the time
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Reviewed in the United States on August 27, 2025
★★★★★ 5
Finally a Cooling Blanket That Actually Works for Hot Sleepers
Size: Queen (90" * 90"）, Color: Luxury Grey, Size: Queen (90" * 90"）, Color: Luxury Grey
I first got to know this brand when they released their cooling pillow. At the time, I was very skeptical because I’ve tried many “cooling” pillows and pillowcases from other brands, and almost all of them failed to stay cool throughout the night. Surprisingly, this brand was the first one that actually worked for me.
Going through menopause has been extremely difficult, especially dealing with the constant heat and night sweats. I kept thinking that if they could somehow use the same cooling technology in a blanket, it would be amazing — and they actually did it.
This blanket has honestly been a lifesaver for me. One side has the cooling fabric while the other side feels more like a regular blanket, so you can switch depending on the temperature or season. I’ve been using a silk comforter before this, and while it was comfortable, it really didn’t help much with overheating at night. This cooling blanket made a noticeable difference almost immediately.
What impressed me most is that the cooling effect doesn’t just disappear after a few minutes. It stays comfortably cool and lightweight through the night without feeling damp or overly thin. Since using it, I’ve actually been tracking improvements in my sleep using my WHOOP device, and over the past 20 days I’ve noticed my deep sleep readings improving consistently.
The blanket also feels well made, soft, and lightweight without feeling cheap. For the quality and performance, I think the price is very fair, especially compared to other “cooling” bedding products that overpromise and underdeliver.
If you struggle with hot sleeping, night sweats, or menopause-related heat issues, I would absolutely recommend giving this a try. It genuinely improved my sleep quality.
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Reviewed in the United States on May 24, 2026