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Small clear glass incandescent bulb with miniature wedge base

Satco

Satco S7817 3W 7V T3.25 W2.1x9.5d Mini Wedge Standard Bulb

SKU CH-7XYP-FRP1N

A 3-watt, 7-volt miniature incandescent bulb with a T3.25 shape and W2.1x9.5d mini wedge base, rated for 1500 hours

  • Power rating3
  • Lifespan (hours)1500
  • Product typeIncandescent Miniature
  • 3 W low power draw for energy-efficient lighting
  • 7 V operation fits low-voltage systems
  • W2.1x9.5d mini wedge base for quick installation
  • 1500 hour rated life reduces replacement frequency

Satco S7817 Mini Wedge Bulb

The Satco S7817 is a 3 watt incandescent miniature bulb designed for fixtures requiring a T3.25 shape and a W2.1x9.5d mini wedge base. It operates at 7 volts and suits low-voltage lighting applications where this specific base type is specified.

Interface and lifetime limits

The W2.1x9.5d base fits only sockets made for that exact miniature wedge profile, so it will not work in standard screw or bayonet holders. Rated life is 1500 hours, after which the filament will fail and the bulb must be replaced.

How it compares

Measured against everything we stock in General-Purpose & Specialty Bulbs, at today’s prices. Recalculated every night.

Price $3.99
Cheaper than about 94% of the 1,791 comparable items (median $17.99).

Specifications

Product
Brand nameSATCO
Product typeIncandescent Miniature
Power
Power rating3
More details
Lifespan (hours)1500

Questions about this item

Which voltage and base type should I select for my fixture?

This bulb is a single 7 V version with a W2.1x9.5d mini wedge base, so choose it only when the socket and supply match those exact specs.

What does the 1500-hour rating mean in daily use?

At roughly three hours per day the rated life equals about 500 days before the filament is expected to fail.

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