S14d Linear LED Bulbs
S14d · S14s — 300mm, 500mm, and 1000mm lengths, 2700K, Ra ≥ 90, 0–100% flicker-free dimming
Product Gallery
SD-Series · 300 Base
S14d / 300 / 5W
Clear
S14d / 300 / 5W
Porcelain
SD-Series · 500 Base
S14d / 500 / 7W
Clear
S14d / 500 / 7W
Porcelain
SD-Series · 700 Base
S14d / 700 / 9W
Clear
S14d / 700 / 9W
Porcelain
SD-Series · 1000 Base
S14d / 1000 / 9W
Clear
S14d / 1000 / 9W
Porcelain
S14d / 1000 / 9W
Clear
S14d / 1000 / 9W
Porcelain
Overview
HongYu's S14d linear range covers three stock lengths — 300mm (5W), 500mm (7W), and 1000mm (9W) — in both S14d (double-contact) and S14s (single-contact) base variants. All models use a 2700K phosphor, Ra ≥ 90, and 0–100% flicker-free dimming. They are CE and RoHS certified for 230V European festoon and string-light systems. The 1000mm model is particularly popular with commercial outdoor terrace and event lighting installations.
Key Parameters
Market
EU / 230V
Certification
CE · RoHS
Base
S14d · S14s
Lengths
300 / 500 / 1000mm
Dimming
Flicker-Free 0–100%
CRI
Ra ≥ 90
CCT
2700K
Why Buyers Choose This Series
⭐ 300mm to 1000mm in stock — no custom tooling needed for most festoon systems
Festoon lamp systems typically specify 300mm, 500mm, or 1000mm spacing. Because all three lengths are in HongYu's standard stock programme, importers and system integrators can fulfil a mixed-length specification from a single purchase order — no tooling charge, no extended lead time for the long lengths. The 1000mm model uses a distributed filament array that maintains Ra ≥ 90 and uniform brightness across the full tube length.
Where This Product Fits
Festoon String Lights
Outdoor and indoor string systems
Hospitality Terraces
Alfresco dining and poolside
Commercial Signage
Linear illuminated displays
Events & Weddings
Dramatic overhead installations
Full Specifications
| Item No. | Size | Voltage | Watts | CCT | Ra | Lumen | Dimmable | Finish | Cert. |
|---|---|---|---|---|---|---|---|---|---|
| S14d-300-C | 30x300mm | 230V | 5W | 2700K | 90.0 | 500Lm | Yes | Clear | — |
| S14d-300-W | 30x300mm | 230V | 5W | 2700K | 90.0 | 450Lm | Yes | Porcelain | — |
| S14d-500-C | 30x500mm | 230V | 7W | 2700K | 90.0 | 650Lm | Yes | Clear | — |
| S14d-500-W | 30x500mm | 230V | 7W | 2700K | 90.0 | 600Lm | Yes | Porcelain | — |
| S14d-700-C | 30x500mm | 230V | 9W | 2700K | 90.0 | 810Lm | Yes | Clear | — |
| S14d-700-W | 30x500mm | 230V | 9W | 2700K | 90.0 | 720Lm | Yes | Porcelain | — |
| S14d-1000-C | 30x1000mm | 230V | 9W | 2700K | 90.0 | 810Lm | Yes | Clear | — |
| S14d-1000-W | 30x1000mm | 230V | 9W | 2700K | 90.0 | 720Lm | Yes | Porcelain | — |
| S14d-1000-C-Pro | 30x1000mm | 230V | 9W | 2700K | 90.0 | 1000Lm | Yes | Clear | — |
| S14d-1000-W-Pro | 30x1000mm | 230V | 9W | 2700K | 90.0 | 900Lm | Yes | Porcelain | — |
Sourcing Notes: CE: LVD and EMC. S14d and S14s bases. Flicker: THD <10%, flicker index <0.05. IP rating: IP20 (bulb only).
OEM & Custom Options
Custom Length
Non-standard lengths (700mm, 1200mm) available from 2,000 pcs with a tooling charge.
Base Variant
S14d (double-contact) and S14s (single-contact). Specify at order.
Outdoor Rating
IP20 bulb rating. Ensure luminaire socket is IP44+ for outdoor use.
FAQ
What is the S14d base?
S14d is a double-contact linear base used in festoon and string-light systems.
Are these outdoor rated?
The bulbs are IP20. The socket/luminaire must be IP44+ for outdoor use.
What lengths are available?
300mm (5W), 500mm (7W), 1000mm (9W). Custom lengths from 2,000 pcs.
MOQ?
500 pcs per length. Mixed orders from 300 pcs per item.
Request a Quote or Samples
MOQ from 300–500 pcs · Sample lead time 5–15 days · OEM & private label welcome
Factory-direct pricing · CE / ETL certified · 3,000 m² facility · Dongguan, China