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Description
BROADCOM LIMITED HCPL-4503-000E Optocoupler, Transistor Output, 1 Channel, DIP, 8 Pins, 25 mA, 3.75 kV, 19 %The HCPL 4503 000E is a 1 channel high speed Diode Transistor Optocoupler uses an insulating layer between a LED and an integrated photo detector to provide electrical insulation between input and output. Separate connections for the photodiode bias and output transistor collector increase the speed up to a hundred times that of a conventional phototransistor coupler by reducing the base collector capacitance. It is similar to the HCPL 4502, HCPL 0452
The HCPL-4503-000E is a 1-channel high-speed Diode-Transistor Optocoupler uses an insulating layer between a LED and an integrated photo-detector to provide electrical insulation between input and output. Separate connections for the photodiode bias and output-transistor collector increase the speed up to a hundred times that of a conventional phototransistor coupler by reducing the base-collector capacitance. It is similar to the HCPL-4502, HCPL-0452 and HCNW4502 optocouplers but has increased common mode transient immunity of 15kV/ms minimum at 1500V (VCM) guaranteed.
- 1Mbps High speed
- TTL compatible
- Open-collector output
- Guaranteed performance from 0 to 100°C temperature range
Applications
Signal Processing, Motor Drive & Control, Sensing & Instrumentation
Warnings
It is advised that normal static precautions be taken in handling and assembly of this component to prevent damage and/or degradation which may be induced by ESD.
Product details
| Optocoupler Case Style | DIP |
| Forward Current If Max | 25mA |
| Collector Emitter Voltage V(br)ceo | 20V |
| No. of Channels | 1 Channel |
| CTR Min | 19% |
| Packaging | Each |
| Product Range | - |
| Isolation Voltage | 3.75kV |
| No. of Pins | 8Pins |
Other details
| Brand | BROADCOM LIMITED |
| Part Number | HCPL-4503-000E |
| Quantity | Each |
| Technical Data Sheet 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.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 10 reviews
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Product Reviews
★★★★★ 5
Great for blue collar guys
Color: Dark Brown
Perfect size for dumping pockets, phone, knife and keys after work or when switching pants
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Reviewed in the United States on March 3, 2026
★★★★★ 5
Quality Product, Definitely Recommend
Size: 17.2"L x 3.15"W x 0.78"H, Color: Black Walnut, Size: 17.2"L x 3.15"W x 0.78"H, Color: Black Walnut
Looks and feels great. Amazingly smooth, and well-crafted. It fits the length of my keyboard, and has quality grippers on the base to prevent sliding. Was actually really pleased with it.
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Reviewed in the United States on September 15, 2025
★★★★★ 5
High quality solid wood rest
Size: 14.4"L x 3.15"W x 0.78"H, Color: Black Walnut
This wrist rest is nicely finished and was well packed in high-density foam as well as a cardboard box that was wrapped very tightly in thick plastic. It's sanded very, very smooth and is made of beautiful solid walnut, with nonskid pads on the back. The branding is on the side that touches the keyboard, so it is not visible or obtrusive at all. My keyboard is 15.5 inches long, and the 14.4 inch rest looks great up against it. The 0.78" thickness is also very suitable for the thickness of my keyboard.
The product gets 5 stars because it is accurately represented and this is entirely down to personal preference, but something about this rest that I don't love is the degree of incline. I have my keyboard up on the kickstands, and the wrist rest that I already owned slopes pretty dramatically starting from the middle, so it follows the angle of the keyboard. The ZQL wrist rest is about 75% flat and then has a small slope that rounds off on the bottom edge.
Again, this is very much a personal thing; I just brought it up because it's something that people might not think too much about until they actually use it. I think this rest would be great for anyone with very large hands, or with a flat keyboard. It's taking a little getting used to for me, but I really enjoy the smoothness and obvious quality of the wood. A wrist rest is an ergonomic must when it comes to thicker keyboards.
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Reviewed in the United States on August 28, 2025
★★★★★ 5
Nice. I like that the wood feels cool to the touch
Size: 14.4"L x 3.15"W x 0.78"H, Color: Black Walnut, Size: 14.4"L x 3.15"W x 0.78"H, Color: Black Walnut
A nice little wooden wrist rest.
I would suggest not using it as a wrist rest, but use it more as a palm rest, because if you are having pain, putting more pressure on those wrist tendons is not gonna help.
Quality of the item is good. My biggest worry about wooden wrist rests is that they'll not be sanded well, or not smooth, and you'll get a sliver or catch your skin on a piece. Second biggest worry is that they will be slippery, and slide around the desk, or just be covered with a coating or finish that is sticky for human skin.
I'm happy to say, that this didn't have those issues. Mine is smooth, and made of dense wood. It doesn't feel cheap and made with hollow wood. There are no burs or slivers. It's not lacquered or sticky for your hands. It doesn't stain my hands when in use. And it has rubber feet to help grip, so it doesn't slide around.
One benefit to having a wood wrist rest, is that it stays "cool" to the touch longer than cloth or gel pads. But, at the same time, one heated, it takes longer to cool back down.
I've found that I quite like the cool sensation that is unique to wood.
I'm happy with it and the overall quality.
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Reviewed in the United States on August 5, 2025
★★★★★ 4
Great looking wrist rest but lacks strong grip
The walnut wood looks and feels great and gives my desk setup a more premium look. The dimensions are as described on the product page. I have no doubt this wrist rest will last a long time given how solid and well made it is.
The only downside is that it tends to move around a bit more than my old silicon wrist rest. The grip on the bottom isn’t as strong so I find myself readjusting it occasionally when gaming. Overall, recommended.
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Reviewed in the United States on July 29, 2025