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If you’ve browsed the Tech-LED / Marubeni catalog, you’ve likely seen part numbers like SMBB850DS1-100S-02Z-I and wondered what each segment means. This guide shows you how to decode Marubeni LED part numbers – so engineers and purchasing teams can understand package type, wavelength, chip configuration, and options at a glance.
Anatomy of a Marubeni LED Part Number
Each part number follows a consistent pattern. Here’s how to read a typical example:
Example: SMBB850DS1-100S-02Z-I
| Code | Segment | Meaning |
|---|---|---|
| (a) | SMBB | Package Family Name — identifies the LED package type (e.g., SMBB, SMT, EDC, COB, STEM). |
| (b) | 850 | Peak Wavelength (nm) — emission wavelength in nanometers; typically 365 nm (UV) to 1900 nm (SWIR). |
| (c) | DS | Chip Structure Type — internal chip structure designation (e.g., DS). Not user-selectable. |
| (d) | 1 | Number of Chips — 1 (single), 2 (dual), 3 (triple). |
| (e) | 100 | Chip Dimension — in microns; “100” = 1000 µm × 1000 µm, “130” = 1300 µm × 1300 µm, etc. |
| (f) | S | Internal Circuit Type (multi-chip) — e.g., S = series, P = parallel. |
| (g) | -02 | Lens Type — none = flat lens, -02 = 02 lens, -03 = 03 lens, -05 = 05 lens. |
| (h) | Z | Zener Diode Option — “Z” indicates an integrated Zener diode for ESD protection. |
| (i) | -I | Ceramic Insulator Option — available for multi-chip lamps to enhance thermal/electrical isolation. |
Quick Reference (Common Segments)
| Code | Definition | Example |
|---|---|---|
| SMBB | High-power SMD package family | SMBB850DS1-100S-02Z-I |
| EDC | Compact high-power LED (EDC series) | EDC405ES1-130S-05Z |
| COB | Chip-on-Board LED | COB395DS2-100S |
| STEM | Stem-type package LED | STEM660DS1-130S |
| 365 | Peak wavelength: 365 nm (UV) | SMT365ES1-100S |
| 850 | Peak wavelength: 850 nm | SMBB850DS1-100S-02Z |
| 100 | Chip size: 1000 µm × 1000 µm | COB660DS1-100S |
| -02 | Lens type “02” | SMBB850DS1-100S-02Z |
| Z | With Zener diode | EDC405ES1-100S-05Z |
| -I | With ceramic insulator (multi-chip) | SMBB850DS1-100S-02Z-I |
Example Variants Across Packages
| Family | Example Part | Common Use |
|---|---|---|
| SMBB | SMBB850DS1-100S-02Z-I | High-power surface-mount emitters |
| EDC | EDC405ES1-130S-05Z | Compact high-power UV sources |
| COB | COB395DS2-100S | Chip-on-Board area/flood applications |
| STEM | STEM660DS1-130S | Visible LEDs for sensors/instrumentation |
Why This Numbering System Matters
- Faster selection: identify wavelength, package, chip count, and lens at a glance.
- Design efficiency: match package and thermal needs across families.
- Accurate procurement: engineers and buyers can specify the exact same LED variant.
Related Resources
- Through-Hole LEDs
- Surface-Mount LEDs – SMT
- Surface-Mount LEDs – SMBB
- High-Power EDC Series
- High-Power Illuminator / TO-66 / Array
- COB (Chip-on-Board) LEDs
- UV & Near-UV LEDs (235–420 nm)
- Visible LEDs (400–800 nm)
- Photodiodes
- Two-Tone Photodiodes
FAQ
What do Marubeni LED part numbers mean?
They encode the package family, peak wavelength, chip structure, number of chips, chip dimensions, internal circuit (for multi-chip), lens type, and options (e.g., Zener diode, ceramic insulator).
How can I identify the wavelength from the code?
The three-digit number after the package family (e.g., 850) indicates the peak wavelength in nanometers. For UV, you might see values like 365, 385, 395, 405, etc.
What does the “Z” indicate?
Z indicates the product includes a Zener diode for electrostatic discharge (ESD) protection.
When does “-I” appear in the part number?
-I marks the ceramic insulator option, typically used in multi-chip lamps for enhanced thermal and electrical isolation.
Related Articles
- LED Package Types Explained: SMT vs. SMBB vs. COB
- Understanding LED Wavelengths and Applications
- How to Choose the Right LED for Industrial & Medical Devices
