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OEM Engineering

Utilizing our 40+ years of engineering and marketing experience in optoelectronics, Marktech’s OEM engineering services process focuses on customer needs and applications.

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Our engineering team will review your applications and provide recommendations on the following:

1.     Our best standard LED emitters, photodiode detectors, packaging, and assemblies for your project
2.     Custom-designed options where our off-the-self components do not meet your needs.
3.     Develop OEM specifications for the detector, LED, or assembly. As a manufacturer of photodiodes and LEDs, Marktech can provide products with emitters and sensors in the same package for monitoring LED output and reflective sensing and analysis applications.
4.     Comprehensive evaluation of the designed or OEM-specified LEDs and photodetectors to validate performance in our extensive testing laboratories.

Instead of using standardized–but perhaps non-optimized–parts, Marktech allows advantageous custom product variations to enhance your product design needs. Marktech Optoelectronics has solved many customers’ detector and LED design, assembly, and manufacturing challenges. Marktech’s size and market focus allows it to offer customized variations of products unavailable from typical optoelectronic suppliers.

Resources are provided for component selection, packaging options, testing, and expert advice, providing the designer with insights concerning custom variations that can be leveraged to optimize electrical, optical, mechanical, and thermal characteristics–without significant volume commitments.

Maximizing Total Cost Benefit with Tailored Photodiodes and LEDs for OEM Designs

Total cost benefit, a crucial concept in realizing the benefits of custom optoelectronics, involves evaluating financial and non-financial gains (intangible benefits such as performance and design simplification) against the total costs, including potential risks and expenditures. This broader evaluation helps stakeholders make well-informed decisions by considering all possible direct, indirect, tangible, and intangible benefits and costs.

There are several strategies to optimize the cost-effectiveness and performance of photodiodes and LEDs in OEM designs:

1. Selecting Optimized Components:

Engineers should choose components that are specifically tailored to their application requirements, which include sensitivity, wavelength range, reliability, and cost-effectiveness. Custom solutions, such as combining two photodiodes into one package or developing detectors with lower active areas, can reduce total costs and simplify designs.

2. Application-Specific Design Solutions:

For example, Marktech’s UVC LEDs target specific bacteria like cryptosporidium more efficiently than broad-spectrum mercury vapor lamps, enhancing energy efficiency and extending battery life. This approach underscores the importance of selecting the correct wavelength for the application to improve performance and cost benefits.

3. Custom Parts for Competitive Advantage:

Bespoke optoelectronic components can provide unique characteristics that are not easily duplicated, offering a competitive edge. This customization can also eliminate the need for additional components like optical filters or amplifiers, further reducing system costs and improving product performance.

Photodiodes and LEDs are widely used in various applications, including sensing, medical diagnostic devices, and communication systems. Combining multiple LEDs and photodiodes with the precise wavelength and power output required for specific design in the same package can provide unique performance combined with lower component costs. Engineers can optimize performance while minimizing costs by tailoring these components to OEM design needs. This approach also adds value through unique features that are difficult for competitors to replicate, underlining the strategic importance of customizing optoelectronic components in achieving superior design outcomes.

In summary, OEM services for the customization of photodiodes and LEDs are potent tools for optimizing the cost and performance of OEM designs. Engineers can create efficient and cost-effective systems by selecting the appropriate components and tailoring them to the application’s specific needs. With careful consideration of the performance and cost trade-offs, photodiodes and LEDs can be used to create systems that maximize the total cost benefit for OEM designs. They also provide unique features that are difficult for competitors to duplicate.

 You can read more about optimizing total cost benefits with Customization here: “Maximizing Total Cost Benefit with Tailored Photodiodes and LEDs for OEM Designs.”

Optoelectronic Design

Marktech has the design and test expertise to get your product to market faster, working with you from prototype testing to high-volume production.

What you can expect from working with Marktech:

Initially, our staff of experienced engineers will gain an understanding of your application and the environment in which it will be used.

Next, using computer-aided design (CAD), specialized software, and engineering tools, we operate within the parameters of your primary concept and specification documents to design and develop a product that meets your requirements.

Optoelectronic Testing Services

Once a prototype of your product is created, testing can begin in our onsite components lab. A complete onsite components lab with measurement capability to validate wavelength, angles, simulation of specific conditions, and full optical and electrical parametric characterization supports testing. Optical measurements can be obtained either “Photometrically” or “Radiometrically” as described below. Marktech’s application support includes electrical parameter tests, environmental test screening, and reliability testing for your specific needs.

Optoelectronic Testing - Photometry

 Photometry is simply the measurement of light in the visible spectrum (approximately 380nm-770nm), which is light seen by the naked eye of an average human observer. There are many different types of photometric units, such as nits (cd/m2), lux (lumen/m2), footcandles (lumen/ft2), stilb (cd/cm2), etc. These are based on two basic photometric standards: the LUMEN and the CANDELA.

The Candela is the unit of luminous intensity, defined as the amount of radiant flux (total luminous power emitted from a source and expressed as lumens) per unit solid angle in a given direction. The Lumen can be defined as the radiant flux emitted per unit solid angle from a uniform point source whose luminous intensity is 1 candela. (1 candela = 1 lumen/steradian) It is also essential to understand the definition of steradian, which is the solid angle (cone) at the center of a sphere of radius “r” that subtends an area “r2” on the surface of the sphere. (See Figure 1) The surface area of a sphere is 4Ï€ r2; therefore, a sphere has 4Ï€ steradians.

Figure 1

Optoelectronic Testing - Radiometry

Radiometry refers to total radiation or measuring all light in the visible, infrared, or ultraviolet spectrum. The basic unit of radiometric optical power (Radiant Power) is the watt (W). The watt is an absolute unit because it is independent of wavelength. One watt of infrared light is as powerful as one watt of visible light. Other radiometric terms that are commonly measured are radiant intensity (Watts/Steradian), Irradiance (W/m2), and Radiance (W/m2 sr). Using an integrating sphere is the primary method for measuring total radiant power/luminous flux. (See Figure 2 – 5)

The integrating sphere measures light emitted from the LED in all directions. Generally, these measurements are independent of viewing angle and not subject to angular measurement inaccuracies seen when testing photometrically. However, errors are still possible. Sphere diameters of approximately 3 and 6 inches are widely used. If accuracy is critical, the more significant diameter types are preferred due to the favorable ratio of the sphere area to the size of the LED and ports. However, this also results in a loss of intensity. A significant source of measurement error has been where to position the LED inside the integrating sphere. The latest specification adopted by the CIE, Publication 127, states that the entire package of the LED should be inside the sphere, which is called a two-luminous flux measurement.

Optoelectronic Testing - Integrating Sphere
Figure 2: Power output selection for 5mm red LED product
Figure 3: Optical parameter testing
Figure 4: Photo Research combination Photometer/ Spectroradiometer equipment for spectrally based colorimetry and high-speed, low-level luminance testing.
Figure 5: Light/power output characterization of finished custom devices.

Validating the Reliability of LED Components and Assemblies

Many factors affect the reliability and lifetime of optoelectronic devices and assemblies. Marktech ensures that all products designed, prototyped, and manufactured undergo rigorous testing and screening to ensure optimal performance and life. Some of these conditions are outlined below.

Effect of Temperature Conditions on LED and Detector Performance

Calculating information such as the longevity characteristics (at high temperatures, normal temperatures, and low temperatures) of discrete LEDs and photodiodes in an environment in which the equipment will be used and testing those calculations by testing the equipment’s operation may be useful.

Effect of Humidity Conditions on LED and Detector Performance

Depending on the material used in an LED or photodiode, operating it under high-humidity, high-temperature conditions can dramatically reduce its lifetime. Check their longevity characteristics when optoelectronic devices are used under high-humidity, high-temperature conditions.

Current Conditions Impacting LED and Detector Performance

Because lattice defects increase with use, the luminous intensity of LEDs gradually declines. The accumulation speed of lattice defects depends on the magnitude of the forward current.

Other Factors Impacting Optoelectronic Device Performance

When using LEDs and photodiodes under conditions where factors such as vibration, shock, gas, or ultraviolet affect the wire bond leads or die-bonding resin, Marktech recommends testing the optoelectronic devices separately for each potential affecting factor.

Performance Impact of Thermal Cycling - LED Lamp Temperature Cycle Test

Temperature cycle testing is typically performed on the LED lamp structure at the upper and lower-limit storage temperatures.a

Longevity Simulation

The following examples show how simulation can be used to obtain longevity information. For simplicity, the characteristics of a hypothetical LED lamp are used. Example (a): Simulate the longevity of an LED lamp incorporated in control equipment installed in a room in which high-temperature equipment is operating.


High-temperature equipment operates for 1,080 hours a year (three hours a day x 360 days) with a forward current of 20 mA.
LED lamp ambient temperature is 60°C, 60 days per year, humidity=”90%”
LED lamp ambient temperature is 40°C, 90 days per year, humidity=”90%”
LED lamp ambient temperature is 25°C, 210 days per year, humidity=”90%”
LED lamp longevity characteristics: Figure 6 shows the longevity characteristics of LED lamps.

REL Luminosity vs. Time
Figure 6 – Simulation longevity characteristics

Simulation Example

Calculating the LED lamp operating time per year by ambient temperature.
Condition 1 operating time: 3 hours x 60 days = 180 hours
Condition 2 operating time: 3 hours x 90 days = 270 hours
Condition 3 operating time: 3 hours x 210 days = 630 hours

Figure 7 shows the results. In the example, the longevity characteristics are simulated by the approximate equation exp(-8 t), with 8 changing each time. Where the curve time constants for the characteristics in Figure 6 are 81, 82, 83, and luminosity reduction rate = exp (-8nt), the calculation is made by assigning 8 to each operating time.
Note: It is impossible to represent all the different longevity characteristics by a single approximate equation. It would be risky to extrapolate the characteristics over ten or 20 years based on the above examples and expect the results to be accurate, even if the daily operating time was short. REL Luminosity Residue vs Time 1

Figure 7 – Simulation example

Recent improvements have reduced the tendency for LED lamp luminosity to decline with use. The results of long-term studies of longevity characteristics now show that the luminosity need not always attenuate. The decrease in luminosity during use has been 

evaluated using a Wiebel distribution function. Sometimes, even after thousands of hours of longevity testing, the M-value does not change thousands of hours (see Figure 8).

REL Luminosity Residue vs Time 2

Figure 8 – Predictions from longevity test results (a), (b), (c)

With the tendency for luminosity to deteriorate already confirmed by the results of long-term longevity tests in Figure 8(a) and (b), longevity can now be predicted relatively easily. However, no deterioration is seen in Figure 8 (c), even after 10,000 hours of use. It is not possible to decide whether deterioration proceeds in the (c-1) direction or the (c-2) direction. In some cases, the deterioration in the M-value is significant after a certain point, as in (c-2).

The absence of luminosity reduction during longevity tests does not mean that the LED lamp will not deteriorate at some point. If necessary, longevity testing under accelerated conditions is performed to predict the longevity characteristics based on the actual conditions of use when determining where a piece of equipment incorporating an LED is to be used.

Tenney (Thermal Product Solutions) Temperature/ Humidity Test Chambers are typically used for 85C/ 85% Relative Humidity rigorous environmental component life testing. Electrical bias testing is optionally included.

Testing and Evaluation

By utilizing Marktech’s value-added engineering services, you will get a custom component or assembly that meets your unique specifications. We provide our customers extensive testing and evaluation capabilities, ensuring your product functions exactly as expected.

Marktech’s testing and evaluation services include:

Machine Vision Lighting

Marktech offers unique lighting solutions when it comes to machine vision lighting. To begin with, we design our own printed circuit boards and specify the material composition since this is critical for proper die attachment and wire bonding of the bare die. We also can sort +/- 1 nanometer on the die or luminosity and power output ratios of less than 2 to 1. Of great interest to our customer base is the fact that we can guarantee uniformity of light across large surface areas. Marktech can assist you in making the transition from through hole to chip on board. From the initial concept to the final product, which includes the housing, Marktech can help relieve the stress of achieving maximum lighting for your machine vision application.

Proprietary advanced inspection equipment

High-speed LED insertion.

Machine vision inspection system

White LED strips and panels

StarBoard solder paste process

Customized optical package design

Customer service

Customer service is a top priority at Marktech. So, even after delivery, our team will stay in touch to make certain that your products are performing as expected.

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Need Parts?

Do you need a small number of LEDs for your proof of concept? Or, are you looking to purchase a run for your prototypes? Visit our online stores at Digi-Key Electronics and Mouser Electronics today. In Japan, our products are now available through Rikei Corporation. In Israel, our products are now available through Militram. In Canada, our products are now available through ARL Group.

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InGaAs PIN Photodiode

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