Guide to Replacing Imported LED Beads: How to Replace Osram, Ria, and Yiguang Models? Comparison method and actual measurement process

Is there a domestic replacement for this Osram LED? "- In the past two years, the number of customers asking this question has increased several times. Extended delivery times, price fluctuations, and supply chain security are all forcing equipment manufacturers to conduct localization verification. In the fields of indicator lights and small to medium power applications, the performance indicators of domestic head packaging factories have already been aligned,What is lacking is not ability, but the correct method of substitution——Directly search for the "same" pitfalls by model name.

This article shares our standard process for doing alternative projects for clients.

1、 First, clarify: the three levels of alternative verification

Level 1: Pad compatibility (can it be installed)

The packaging size, pad spacing, and polarity labeling are consistent. This is the most basic, also known as "0805", which can be installed basically, but attention should be paid to the differences in the inward/outward expansion of solder pads for individual imported models.

Level 2: Electrical compatibility (can it light up)

VF range, recommended IF, and maximum rated value alignment. Key focus: Imported models commonly have 2mA low current specifications and 5mA standard specifications. When replacing, the brightness should be compared according to your actual driving current, rather than the rated 20mA ratio.

Level 3: Compatibility between optics and reliability (can it be verified)

Brightness level, wavelength/color temperature Bin, emission angle, temperature range, anti-static level, and light attenuation data. This layer determines whether the replacement can pass the customer's complete machine verification.

2、 Correct posture for model comparison: according to parameters, not silk screen printing

The model code of imported brands includes information such as packaging, color, brightness level, angle, and roll direction, while domestic brands do not have a one-to-one corresponding naming,The correct approach is to reverse check the parameters in the specification book and then map them：

1. Copy from the original factory specification sheet: packaging size VF@IF 、 IV gear, main wavelength/color temperature, emission angle, temperature range

2. Use this parameter list to match with domestic manufacturers, requirementsSame level or adjacent highlight level

3. Common pitfalls: The definition of brightness levels for imported models is different from that for domestic models (such as Osram being divided into lm levels and domestic models being divided into mcd levels), and it needs to be converted to the same IF conditions

We have maintained a comparison table of commonly used imported models (Osram POINT led/CHIPLED series, Nichia NSSW/NFSW series, Yiguang 19-213/17-21 series, etc.). Customers can directly find the corresponding domestic solutions by reporting the models. If you need them, you can come and request them.

3、 Four step alternative verification process

Step 1: Parameter Comparison (Paper)

Compare key parameters item by item, VF、IV、 Only when the deviation of wavelength and angle is ≤ 10%, can we proceed to the next step.

Step 2: Sample Measurement (Bench)

On the same driver board, imported original products and domestic substitutes light up side by side: same current to brightness ratio, color ratio, and uniform brightness ratio at low current (2-5mA).

Step 3: Small batch trial production (100-500 units)

Focus on SMT pass through rate (the consistency of lamp bead size affects the chip throwing rate) and post soldering failure rate.

Step 4: Reliability Verification

Light decay ≤ 3% after 168 hours of high temperature illumination at 85 ℃, and no dead light after 100 cycles of cold and hot shock at -40 ℃~+100 ℃ - can be switched between the two options.

Suggestions for dual source strategyAfter the substitution verification is passed, it is recommended to keep the dual supplier parallel for 3-6 months, gradually increase the proportion of domestic materials, and leave a buffer for the supply chain.

4、 The real gap in domestic substitution in the field of indicator lights

Objectively speaking:

• Brightness, wavelength VFDomestic leading factories have been fully aligned, even with finer grading
• Reliability (light decay, lifespan)Copper bracket+pure gold wire solution is on par with imports, supported by LM-80 level long-term testing data
• consistencyNarrow Bin sorting ability alignment (wavelength Bin 1-2.5nm)
• The real gapComplete vehicle certification (AEC-Q102), ultra-high display index (Ra ≥ 97), special materials, global production capacity layout - these cannot be encountered in ordinary industrial indication scenarios

Conclusion:There are no technical barriers to domestic substitution for indicator lights, backlighting, and small to medium power lighting applications, only the verification process needs to be fully implemented.

5 FAQ

Q: What should I do if the customer (manufacturer) does not approve of domestic materials after replacement?

Provide a complete comparative test report (photoelectric parameters+168h aging+cold and hot shock), most machine manufacturers have localization indicators, and alternative solutions with complete data have a high pass rate. We can cooperate to provide third-party testing control data.

Q: What if the imported model is discontinued and the parameters cannot be copied completely?

Send us the physical samples for reverse testing of VF/IV/wavelength/angle in the laboratory, and match the substitute materials according to the measured data.

Q: Will there be patent risks associated with alternative models?

The conventional packaging of indicator lights (0603/0805/1206, 3mm/5mm straight insertion) is the basic structure without patent barriers; Special structures (side emitting, built-in IC) require individual case evaluation, and we will clearly inform you.

6、 Summary

The core of import substitution isMapping by parameters and validating by processInstead of looking for a model with the same name. Four step process: parameter comparison → sample testing → small batch trial production → reliability verification. The seamless switching of indicator lights can be achieved by replacing them with domestically produced ones.

Hongcheng Optoelectronics provides free evaluation services for imported lamp bead replacement: report the model or send samples, and provide a replacement plan and parameter comparison table within 3 working days. Contact information: 139 2571 4318 (same WeChat account), sales@led-hc.com .