LED Strip Engineering Selection Handbook

Compare SOB, roll-to-roll, high-density, wall washer and ultra-long LED strip selection criteria and engineering parameters.

01 / SOB · Continuous optical line

SOB uses individually packaged, gold-wire-bonded LEDs soldered to a flexible circuit under a continuous silicone optical layer. This differs from bare-die COB under a shared phosphor layer.

Selection matrix

Project condition	Selection direction	Check before specifying
Shallow profile, visible light line	SOB with a matched diffuser	Profile depth, viewing angle and dot visibility on a sample
Colour-critical display	SOB with the required colour-rendering option	Model-specific CRI, binning and CCT
Extended continuous installation	SOB-R2R or constant-current SOB where offered	Continuous circuit length, feed layout and powered-run limit

Parameter comparison

Parameter	Options or construction	Engineering decision
Emitter architecture	SOB: packaged LEDs / COB: bare dies	Select by package construction, not visual similarity alone
Optical surface	Continuous silicone layer / model-specific diffuser	Confirm appearance in the actual mounting profile
Electrical design	Voltage and current method vary by model	Read the product sheet before sizing feeds and drivers

Packaging type alone does not establish an IP rating, run length, lifetime or performance guarantee.

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02 / R2R · Continuous circuit

DENO produces SMD-R2R and SOB-R2R strips on continuously electroplated flexible circuits. R2R describes the circuit manufacturing process; it is not a promise that one feed can power an entire reel.

Selection matrix

Project condition	Selection direction	Check before specifying
Few accessible splice locations	Continuous R2R circuit	Specified unspliced circuit length and cut points
Long run with uniform appearance	R2R circuit with a suitable feed or constant-current design	Voltage drop, actual load and far-end output
SOB optical line plus continuous circuit	SOB-R2R variant	Both packaging and circuit construction on the selected model

Parameter comparison

Parameter	Options or construction	Engineering decision
Circuit fabrication	Continuous electroplated web / joined die-cut panels	Check intermediate splice count within the ordered length
Copper construction	35 µm base + 70 µm electroplated = 105 µm on specified builds	Confirm the copper build of the actual model
Run planning	Circuit length / powered run / supplied reel length	Treat these as three separate specifications

Continuous circuit length, powered-run length and reel length are different values. Do not infer one from another.

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03 / High density · Pitch and diffusion

High-density strips reduce the spacing between packaged LEDs. Visible dotting depends on LED pitch, diffuser depth, diffuser transmittance and beam angle together.

Selection matrix

Project condition	Selection direction	Check before specifying
Close-viewed joinery	Shorter-pitch model with a matched diffuser	Mock-up at the intended viewing distance
Shallow aluminium channel	Compare high-density SMD with a continuous-line option	Channel depth, diffuser type and installed appearance
Colour-sensitive display	High-density model with specified rendering and binning	Product-specific CRI, CCT and binning

Parameter comparison

Parameter	Options or construction	Engineering decision
LED pitch	Shorter / longer spacing	Compare the actual LED/m and pitch of candidate models
Profile depth	Shallow / deeper cavity	Check overlap at the actual diffuser distance
Diffuser	Higher / lower transmittance	Balance dot control against delivered light

LED density alone never guarantees a dot-free installation; test the specified profile and diffuser together.

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04 / Wall washer · Beam and setback

Flexible wall washers use secondary optics to direct light across an architectural surface. Grazing and washing require different beam shapes and mounting geometry.

Selection matrix

Project condition	Selection direction	Check before specifying
Reveal surface texture	Narrow-beam grazing arrangement	Setback, aiming, surface finish and mock-up
Evenly light a wall	Wider or asymmetric washing arrangement	Beam angle, setback and illumination uniformity
Outdoor or wet location	Model and sealing selected for the exposure	Exact model IP rating, end seals and site water exposure

Parameter comparison

Parameter	Options or construction	Engineering decision
Optical task	Grazing / washing	Choose texture emphasis or even vertical illumination first
Lens	15° / 30° / 60° options on applicable models	Confirm model availability and photometry before specifying
Ingress exposure	IP65 water jets / IP67 temporary immersion	One rating does not automatically establish the other

Beam uniformity depends on lens, mounting distance and surface. IP ratings are model- and installation-specific.

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05 / Ultra-long · Power distribution

Long-run strip selection separates circuit construction from power distribution. Per-segment linear constant-current designs can help regulate output within their specified electrical limits.

Selection matrix

Project condition	Selection direction	Check before specifying
Feed available at one end	Check a model rated for the required single-end run	W/m, voltage drop and far-end brightness
Feeds available at both ends	Compare both-end feeding with single-end feeding	Driver capacity and effective feed distance
Concealed middle access	Mid-strip tap where permitted by the model	Segment wiring, polarity and actual installation layout

Parameter comparison

Parameter	Options or construction	Engineering decision
Control method	Constant voltage / per-segment constant current	Confirm driver and strip compatibility
Feed position	Single end / both ends / mid-strip tap	Both-end or central feed can reduce farthest feed distance to L/2
Supply	24 V / 36 V / 48 V on applicable models	Verify selected model, load and driver before sizing the run

No universal maximum powered length: determine it for the selected model, voltage, load and feed topology.

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