Philips Philips 36867-0 C50S68/ALTO 50W E39 (Mogul Screw)

Product Overview

Philips 36867-0 C50S68/ALTO — 50W High Pressure Sodium Lamp, E39 Mogul Base

The Philips 36867-0 C50S68/ALTO is a 50-watt Ceramalux ALTO High Pressure Sodium (HPS) lamp from Philips Lighting, designed for outdoor area lighting and smaller-scale industrial applications. With an E39 Mogul Screw base, ED23 bulb shape, ANSI code S68, and universal burn position, this lamp delivers 4,000 initial lumens and a 24,000-hour rated life. The ALTO designation indicates reduced mercury content. Verify wattage, ANSI code, base type, and ballast compatibility before ordering — HPS lamps require an HPS-rated ballast and ignitor.

Wattage

50W

HPS / HID

Lumens

4,000 lm

Initial Output

Color Temp

2100K

Warm Amber

Base

E39

Mogul Screw

Rated Life

24,000 hrs

Average Life

Technical Specifications

SKU	PHLB368670
Brand	Philips Ceramalux
Manufacturer Part Number	c50s68alto-cermalux
Philips Order Code	36867-0
Series	Ceramalux ALTO — High Pressure Sodium
Lamp Type	High Pressure Sodium (HPS) — Ceramalux
Bulb Shape	ED23
Wattage	50W
Initial Lumens	4,000 lm
CRI	21
Color Temperature	2100K Warm Amber
Base Type	E39 Mogul Screw
ANSI Code	S68
Burn / Operating Position	Universal
Rated Average Life	24,000 hours
Max Overall Length (MOL)	7.75"
Bulb Diameter	2.94"
UPC / EAN	46677368678

Product Overview

The Philips 36867-0 C50S68/ALTO is a professional-grade HPS replacement lamp engineered for outdoor and smaller-scale commercial lighting. At 50 watts, it delivers 4,000 initial lumens — reliable output for walkway, accent area, and perimeter lighting applications where compact HPS performance and long service life are the priority. The warm amber 2100K output is characteristic of High Pressure Sodium technology.

The ED23 bulb shape and E39 Mogul Screw base make this a direct replacement in fixtures previously housing a standard 50W HPS lamp with ANSI code S68. Universal burn position allows installation in any orientation. Maximum overall length is 7.75" with a 2.94" bulb diameter — verify fixture clearance before ordering. The ALTO designation indicates reduced mercury content.

Not recommended for: retail displays, color-critical inspection environments, or any application requiring CRI above 21.

Compatible Applications

Outdoor area and walkway lighting — Parking lots, pathways, perimeter security, and smaller-scale area lighting.
Industrial and commercial applications — Warehouses, manufacturing facilities, and outdoor commercial fixtures.
Retrofit and maintenance replacement — Direct replacement for existing 50W HPS lamps with E39 base and S68 ANSI code. Verify ballast compatibility before ordering.

Before Ordering — Verify

ANSI / Lamp Code: Confirm the existing lamp or equipment manual matches S68.
Wattage: Confirm the fixture is rated for 50W.
Base Type: Confirm the socket matches E39 Mogul Screw.
Ballast Compatibility: This lamp requires an HPS-rated ballast and ignitor. It will not operate on a Metal Halide or Mercury Vapor ballast.
Burn Position: Fixture supports Universal operation — no restriction.
Physical Fit: Confirm ED23 bulb shape, 7.75" MOL, 2.94" diameter, and fixture clearance against the existing lamp or fixture manual.

Safety and Handling Guidelines

Correct Ballast Required: Use only with an HPS-compatible ballast and ignitor rated for this lamp. Using an incompatible ballast can result in lamp failure or fixture damage.
High-Pressure Arc Tube: HPS lamps operate under high internal pressure. Always use appropriate eye protection when handling or replacing lamps. Allow lamps to cool fully before removal.
Warm-Up / Restrike Time: HID lamps require a warm-up period to reach full output. After a power interruption, allow the lamp to cool before restarting — a hot restrike attempt can damage the lamp or ballast.
Approved Fixtures Only: Install only in fixtures rated for the listed lamp type, wattage, and operating position.
Mercury Content: Contains mercury (reduced content — ALTO). Do not dispose of in regular trash. Recycle through an approved lamp recycling program in accordance with federal, state, and local regulations.

Compliance

ALTO designation indicates reduced mercury content per Philips ALTO series standards.
Contains mercury — subject to applicable lamp recycling and disposal regulations. California, Washington, and other states may have mandatory take-back or handling fee requirements.
Verify RoHS compliance status, UL listing, Title 20, and Prop 65 requirements with the Philips manufacturer specification sheet prior to use in regulated installations.