GW JTLMS1.EM-GWH4-XX55-1-60-R33 4000K Neutral White from ams OSRAM DURIS® E 2835

Product Introduction

Line up the eight rows of this family's ordering table and one block of four stands out. From 4000 K to 6500 K every row carries the same bin code, GWH4, and the same window of 27.0 to 34.5 lm; below 4000 K the pair changes at each step and the window moves with it. This code is the warm edge of that block, quoted under Q65113A2616.

The consequence is practical. Inside the block the bin code stops telling a buyer which colour is arriving, because four parts share it. The colour sits in the two digits that follow, and XX55 reads 4000 K. A drawing that names the bin and leaves that field blank has not said what it wants.

The rest behaves as the family does. The colour centre is Cx 0.3818 with Cy 0.3796, held within a five-step window of 0.0157 by 0.0068. Output is graded at 60 mA, the drive window is 10 mA to 150 mA with the ceiling quoted at a 25 °C junction, and CRI holds at 80 minimum with 85 typical. Nothing in the table carries a discontinued marking.

Key Product Features

1. Four Rows, One Bin Code
The ordering table prints GWH4 and 27.0 … 34.5 lm against four colour temperatures in a row. A bin code taken on its own therefore identifies a brightness window in this range, not a colour.

2. Where the Ladder Stops Moving
Below this code both the pair and the window change at every step: 3500 K is GWH3 at 27.0 to 33.0 lm, 3000 K is GVH3 at 25.5 to 33.0 lm, 2700 K is G9H2 at 24.0 to 31.5 lm. Above it, nothing moves but the colour.

3. A Drive Ceiling That Comes With a Chart
The 150 mA maximum is quoted at a 25 °C junction, which is not a condition any working board holds. The note beneath the ratings table asks for a derating current that keeps the junction under its limit, and the datasheet ships the curve - permissible current on one axis, solder-point temperature on the other, out to 100 °C - so the ceiling can be read off the board rather than assumed.

4. The Thermal Figure and the Basis Behind It
The thermal resistance of 25 K/W describes the electrical path and assumes 38.9 % radiant efficiency. Take the optical loss back out and the real figure sits nearer 41 K/W - the number a board layout has to satisfy.

5. The Colour Point, With Its Window Stated
Cx 0.3818 and Cy 0.3796, held inside a three-step ellipse of 0.0094 by 0.0041 and a five-step of 0.0157 by 0.0068 at an orientation of 53.4°. A specification can quote the centre, the tolerance, or both.

Application Fields

The fixture types below are the ones this footprint is normally built into, and most of them are specified at 4000 K. ypical specifications include:

- Open-plan offices – panel and linear fittings mounted over desks, meeting rooms and circulation routes.
- Warehouse and production floors – high-bay and low-bay fixtures, where labels, safety colours and moving parts have to stay readable.
- Multi-storey and covered car parks – surface and recessed fixtures on a maintenance cycle, where output per fitting is set by the driver.
- Supermarket and convenience aisles – shelf and gondola lighting where a cooler cast reads as clean rather than cosy.
- Clinical and laboratory interiors – examination rooms and preparation areas written to a 4000 K line.
- Classrooms, lecture rooms and libraries – spaces where neutral white is chosen for reading rather than for atmosphere.
- Edge-lit and direct-lit panel modules – the boards this footprint was drawn for, where emitter count sets the evenness.
- Linear strip and batten builds – cove, shelf and under-cabinet runs populated on the standard 2835 pad.

Why Choose Gainer LED?

A part number and a quantity are enough to start. What comes back is a quotation with the bin, the reel and the shipping window already named.

- A fourteen-year record, one product area
Branded LED components have been the whole of what we buy and sell since 2012, so a question about a family reaches a desk that already knows the part.

- Everything on one order
Emitters, optics and the associated components can be consolidated into one consignment, so a line is not left idle while the last of four suppliers clears.

- Several manufacturers, not one agency
More than one brand sits in the same catalogue, which means a design can be sourced as drawn rather than redrawn around whatever a single line happens to hold.

- The slow movers as well as the volume lines
An unusual colour point or a low-volume bin code gets the same quotation process as a fast-moving line, because that is usually where a specification gets stuck.

- Quantities matched to the stage of the build
An evaluation batch and a full production run are priced as separate lines, so volume is not committed before a design has been signed off.