What's the best way to find a suitable connector on mouser? - Page 1
Forum section: electronics / projects

author: Refrigerator
author_rank: Super Contributor
timestamp: April 29, 2021, 10:18:38 am
content: I've been making the parts list for my project and i want to connect a stepper motor to my PCB.For that i want a 1.27 to 2.54mm pitch 4-pin connector pair (male and female) to make a cable to PCB connection.I've already wasted an hour trying to find it on mouser because they want me to select a category, like how am i supposed to know the thing i want is in that category?I wish i could just select 1.27-2.54 pitch range, PCB mount, SMD or TH and latching (important).The stepper motor will be running on low current probably less than 100mA so just about any connector is fine.I tried cross referencing a little and found the NCDG-04 on TME, which looks pretty nice but mouser doesn't have it and i can't seem to find anything similar on mouser.Switching suppliers is not an option because only mouser has the particular IC's i want to use.Pic included is kind of what i'm looking for.Any advice?

author: EtaPhi
author_rank: Contributor
timestamp: April 29, 2021, 10:55:54 am
content: Like this ?https://eu.mouser.com/Search/Refine?Keyword=2008571-4

author: tooki
author_rank: Super Contributor
timestamp: April 29, 2021, 11:02:54 am
content: Quote from: Refrigerator on April 29, 2021, 10:18:38 amSometimes you can’t get around clicking into promising categories to see if it’s the right one. Even experienced professionals sometimes have to, since different vendors categorize things differently.With that said, this is where I love paper catalogs. If I don’t even know what a thing is called, I can see if I spot it by appearance. Barring a paper catalog, a PDF is the next best thing. Mouser still has its final (2014) catalog available as a PDF. I suggest flipping through the connectors section. At minimum, it’ll also give you ideas for how they categorize.https://www.mouser.com/CatalogRequest/CatalogDownloads.aspx

author: beanflying
author_rank: Super Contributor
timestamp: April 29, 2021, 11:41:57 am
content: Typical connectors used for this sort of thing tend to be JST based so search "in stock JST connectors"https://au.mouser.com/Connectors/_/N-5g3yZ1yzvvqx?Keyword=jst&FS=TrueProviding you don't need the lock for mechanical reasons at 100mA I would be tempted to stick to 1.27 or 2.54 'standard' Dupont style connectors. I keep a stash of both in straight and right angled rather than waiting.

author: Refrigerator
author_rank: Super Contributor
timestamp: April 29, 2021, 11:48:49 am
content: Quote from: beanflying on April 29, 2021, 11:41:57 amI need the connectors to be immune to vibration and i don't want to glue a connector shut, that's why i want them to be latching.

author: beanflying
author_rank: Super Contributor
timestamp: April 29, 2021, 11:55:21 am
content: You will find latching and no latching JST's.The XH series gets used a bit in R/C LiPo's for balance connectors if you want to try a different source more local which has a simple latch (2.54) and is typically the more common one used. Even an evilbay kit might get you out of trouble unless you are doing a production runeBay auction: #124469751051

author: Refrigerator
author_rank: Super Contributor
timestamp: April 29, 2021, 11:59:29 am
content: Quote from: beanflying on April 29, 2021, 11:55:21 amI'm on a time crunch so ebay will not work, it's not a production run but the project has to be presentable.JST automotive HCM series looks promising but i'm tight on board space so it would be best if i could find something in 2.0 or 1.27mm pitch.Also it looks like they don't offer 4 pin options, only 3 or 5 which is not great.

author: beanflying
author_rank: Super Contributor
timestamp: April 29, 2021, 12:06:16 pm
content: Nice quick trawl someone has created a Wiki pagehttps://en.wikipedia.org/wiki/JST_connectorSo ZH GH etc for your board might be a better option.Pin count of 4 should be easy in 2.54 it is actually the most common for 3 Cell Lipo's for balance connectors for example. Given the current out of stock lines of Mouser and Digikey might be you need to look elsewhere.

author: Refrigerator
author_rank: Super Contributor
timestamp: April 29, 2021, 12:26:40 pm
content: Quote from: beanflying on April 29, 2021, 12:06:16 pmI've taken a look at Digikey and their search seems much better.I really like that digikey allows me to choose the retention mechanism and other parameters before i have to choose which category to pick from.I'll try finding something on Digikey and then i'll see if mouser has the part.I want to order from the same supplier to avoid excess shipping cost.

author: Refrigerator
author_rank: Super Contributor
timestamp: April 29, 2021, 12:57:06 pm
content: So it does in fact look like if you want to find a connector the Digikey search engine is better and mouser doesn't even let you choose the retention type at all.I've found this connector through Digikey:https://eu.mouser.com/ProductDetail/Hirose-Connector/DF51K-4P-2DSA800?qs=%2Fha2pyFadujlU3jDTF2FzHNXe5L8O0AgzbOi8kvlL2pRaobhLfwoNSxtz9ennbgzAnd i think it fits the bill pretty well, the pitch is 2.0mm, 4 pins, locking and it's not overly reinforced, like some Molex connectors are,which makes them take alot of PCB space.