00:00TLN 107A or SIR 91-21C? Tough choice for IR projects.
00:06Found best deals on both, plus top generic alternatives.
00:11Let us break down specs, prices, use cases.
00:14First up, standard TSAL series pack.
00:1810 pieces 940nm emitters, 3mm or 5mm sizes, 5-star rating over 4,000 sales.
00:26Only $54.
00:29High radiant power, dirt cheap.
00:32Best pick for basic remote control builds or breadboard tests on budget.
00:37Second option, identical TSAL 940nm emitter pack from alternate supplier.
00:4310 pieces, 2-pin design, high build consistency.
00:47Costs $2.71.
00:49Higher price, but backup stock reliable when cheaper source sells out fast.
00:54Solid 5-star reviews confirm zero duds.
00:58Third choice, another 10-piece TSAL bundle.
01:01Price lowest yet at $1.51, rated 4.8 across near 3,000 orders.
01:08Standard 940nm wavelength matches most consumer electronics receivers.
01:13Grab this pack if lowest cost per diode priority.
01:16Now main contender, SIR 91-21C small butterfly package.
01:2210-pack run 326, rated 4.9.
01:26Emits at 875nm with narrow ±20 degree angle.
01:32Shorter wavelength mean higher sensor sensitivity, faster response.
01:37Surface mount butterfly wings make low-profile soldering easy in tight enclosures.
01:41Other side of dual, TLN-107A side-emitting diodes.
01:46Pack of 10 costs 372 with 4.8 rating.
01:51Standard 940nm, tight ±15 degree angle, side looker package.
01:57Buy this when mounting parallel to PCB for edge sensing or slim remote controls without bending leads.
02:03Direct links to all diodes in description below.
02:06Hit like if clear, subscribe for more component comparisons.
