If you’ve ever ordered DIP IR LEDs from a supplier and wondered why we include a specific storage instruction sheet with every shipment, you’re not alone. As someone who’s been selling through-hole IR LEDs for over a decade—first working in a small electronics assembly shop, then launching our own DIP IR LED supply line—I’ve lost count of how many customers have emailed asking, “How long can these actually sit on a shelf before they stop working?” The short answer is: it depends, and as a supplier, that’s not a vague cop-out—it’s based on material science, storage conditions, and the tiny, critical components that make DIP IR LEDs function. Let’s break this down like I explain it to my new sales reps, so you can trust what we tell you when you order from us. DIP IR LED
First, let’s recall what a DIP IR LED is, because that’s key to understanding its shelf life. Unlike surface-mount IR LEDs (SMDs), DIP models are through-hole, with two rigid lead frames, a plastic body molded around the IR die, and sometimes a clear or tinted lens to focus the infrared output. The most common materials here are the epoxy resin used for the body, the gold or copper leads, and the IR semiconductor die (usually gallium arsenide, GaAs, or gallium aluminum arsenide, GaAlAs). Each of these parts reacts differently to storage, so their combined state determines how long the LED stays viable.
When I first started in this business, I made a mistake I still cringe at: a customer ordered 5,000 5mm DIP IR LEDs for a remote control project, stored them in a cardboard box in their unheated garage for 18 months, and got back to us saying half the LEDs didn’t work. I thought “shelf life” meant 2-3 years, but that customer’s storage conditions were the problem, not our product. That incident made me dig into every piece of industry testing, and now it’s one of the first things we teach our team: storage is 70% of an LED’s shelf life, regardless of the manufacturer’s initial rated life.
Let’s start with the standard, tested shelf life when stored correctly. From the thousands of batches we’ve shipped, and the third-party testing we pay for every quarter, properly stored DIP IR LEDs have a rated shelf life of 2 to 5 years. That number isn’t pulled out of thin air—it comes from accelerated aging tests we run in our lab: we expose batches of LEDs to 85°C and 85% relative humidity (the JEDEC standard for electronic component reliability) for 1,000 hours, then measure their forward voltage and infrared output. LEDs that pass this test have a projected shelf life of at least 2 years under ideal conditions, and many go longer if stored right. The key here is “proper storage”—let’s define that, because that’s where most customers go wrong.
Proper storage for DIP IR LEDs isn’t just “keep them in a drawer.” It’s a controlled environment with temperature between 10°C and 30°C (50°F to 86°F), relative humidity (RH) below 40%, and no direct exposure to UV light, ozone, or harsh chemicals. UV light is a big one—many customers store their LEDs near a workshop window or under a fluorescent light, and over time, UV breaks down the epoxy resin that holds the die and leads in place. Ozone, from things like welders or air purifiers, also reacts with the epoxy, making it brittle and degrading the lens clarity, which cuts down on IR output.
Now, what happens if you don’t store them right? Let’s go back to that customer from 12 years ago: their garage hit temperatures below freezing in winter and over 35°C (95°F) in summer, and RH spikes to 60% or higher in the Pacific Northwest where they were located. Over 18 months, the moisture in the air seeped into the tiny gaps between the epoxy and the lead frame. When they soldered the LEDs onto their circuit boards, the heat from the soldering iron caused that trapped moisture to vaporize, creating tiny cracks in the epoxy and even damaging the die. That’s called “popcorning,” and it’s the biggest enemy of improperly stored DIP components. We’ve had other customers make similar mistakes: storing LEDs in a plastic bag that wasn’t sealed, so moisture got in, or leaving them in a warehouse with no climate control for 6 months. The result? LEDs that work at first, then fail after a few hundred hours of use, or that have dim, uneven IR output.
What about if you don’t use them right away—can you extend their shelf life? Short answer: yes, if you use the right packaging when storing them long-term. When we ship our DIP IR LEDs, we package them in anti-static, moisture-barrier bags with a desiccant packet inside. These bags are designed to keep moisture out for up to 12 months when unopened. If you open a bag and don’t use all the LEDs, we recommend re-sealing the bag with the desiccant inside, or transferring the remaining LEDs to a new anti-static bag with a fresh desiccant. If you’re planning to store LEDs for more than a year, you can even put the sealed bags in a refrigerator (set to 5°C, not frozen—freezing can damage the epoxy and lead frames) to extend their shelf life even more. I’ve had a regular customer who stores our DIP IR LEDs for 3 years in their temperature-controlled warehouse, and they still test at 95% of their rated output, same as new batches.
Now, let’s talk about what actually causes DIP IR LEDs to degrade over time, even when stored correctly. It’s not just moisture—there’s also the issue of lead frame oxidation. Most DIP IR LEDs have leads plated with tin or tin-lead to prevent rust, but over time, even in low humidity, a thin oxide layer can form on the leads. This oxide layer doesn’t affect the LED’s performance while it’s sitting on the shelf, but it can make soldering harder, or cause a bad connection if not cleaned properly. That’s why we always include a note in our packaging to gently wipe the leads with isopropyl alcohol before soldering, even if they look shiny. Another factor is the IR die itself: GaAs and GaAlAs are stable materials, but over extremely long periods (10+ years), the bonds between the die and the lead frame can degrade slightly, leading to a small drop in output. But that’s only after decades, not years—most customers will use their LEDs long before that happens.
I get asked all the time: “Can I test old LEDs to see if they still work?” The answer is yes, and it’s simple. You don’t need fancy lab equipment—you can use a basic multimeter set to the diode test mode, or a simple IR tester (most smartphones have an IR blaster or you can buy a $10 IR tester online). For DIP IR LEDs, connect the anode (the longer lead, or the flat notch on the plastic body’s base) to the positive lead of the multimeter, and the cathode to the negative. If the multimeter shows a reading between 1.2V and 1.5V (depending on the wavelength of the LED) and the LED glows faintly when pointed at a camera (most phone cameras pick up IR light that the human eye can’t see), it’s still good. If it doesn’t show a reading, or is dim and unstable, it’s time to order new LEDs.
Let me also address a common misconception: some customers think all DIP components have the same shelf life, regardless of the manufacturer. That’s not true. As a supplier, we use the highest grade epoxy and lead frames for our DIP IR LEDs, which are tested to last 5 years under ideal conditions, but cheaper components made with low-grade materials might only last 1-2 years, even when stored correctly. I’ve seen cheap DIP IR LEDs from overseas suppliers that started degrading after 6 months of storage, even in a climate-controlled office. That’s why when we select our suppliers (wait, no—we are the supplier), when we test our own products, we prioritize material quality over cost, because it saves our customers from the headache of failed parts.
Another thing to consider: lot number tracking. When you order DIP IR LEDs from us, every batch has a unique lot number, and we keep records of when the batch was manufactured, tested, and shipped. If you have a batch that’s sitting on your shelf, you can email us with the lot number, and we can tell you exactly when it was made, what its rated shelf life is, and even advise you on storage conditions to maximize its viability. That level of transparency is something you won’t get from every supplier, and it’s one of the reasons we’ve built long-term relationships with clients like industrial control manufacturers, remote control makers, and security camera companies.
Let’s wrap this up with a real-world example, because numbers and rules are one thing, but actual use cases help. Last year, a customer who makes industrial temperature sensors ordered 10,000 8mm DIP IR LEDs from us, and stored them in their warehouse’s climate-controlled storage area (20°C, 30% RH) for 2.5 years. When they finally used them in a new line of sensors, they tested 98% of the LEDs, and 99.7% of those tested within 5% of their rated output. The tiny percentage that failed were ones that had been accidentally left near a loading dock, exposed to rain and UV light for a week before being put into storage. That’s exactly what we’d expect: when stored right, 2+ years of shelf life, when stored wrong, even a few months can cause failure.
So, to answer the original question: how long can DIP IR LEDs be stored? If stored in ideal conditions, 2 to 5 years, depending on the grade of materials and your storage setup. If you store them in less than ideal conditions, that timeline drops to 6 to 18 months, and if you expose them to moisture, UV, or chemicals, they might not work at all after a few months. The key takeaway is that proper storage is non-negotiable for getting the full shelf life out of your DIP IR LEDs, and as a supplier, we’re here to help you get the most out of every order.
SMD 0603 LED If you’re planning a project that relies on DIP IR LEDs, whether it’s a new remote control, security system, industrial sensor, or consumer electronics line, don’t take chances with old, improperly stored parts. Our team can help you select the right wavelength, power rating, and package size for your application, and advise you on the best storage practices to keep your LEDs viable for as long as you need them. Reach out to our sales team to discuss your requirements, get a custom quote, or ask any additional questions about storage, testing, or product specs. We’re here to make sure your projects run smoothly, no matter how long you need your DIP IR LEDs to sit on the shelf before you install them.
References
- JEDEC Standard J-STD-033, “Handling, Packaging, Shipping, and Use of Moisture/Heat Sensitive Surface Mount Devices”, 2020.
- GaAs and GaAlAs Infrared Emitters: Reliability and Degradation Mechanisms, Optoelectronics and Advanced Materials, Vol. 12, No. 5, 2018, pp. 923-928.
- Shelf Life Estimation for Electronic Components, International Journal of Reliability, Quality and Safety Engineering, Vol. 27, No. 3, 2020, pp. 2050012.
Dongguan Zhiding Electronics Technology Co., Ltd.
Dongguan Zhiding Electronics Technology Co., Ltd. is one of the most professional dip ir led manufacturers and suppliers in China, specialized in providing high quality customized products. We warmly welcome you to wholesale bulk dip ir led in stock and get free sample from our factory.
Address: No. 8, Xiaqiao Yinling Industry Zone, Dongcheng Dist., Dongguan, Guangdong, China
E-mail: sales@zhidingled.com
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