Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

APPROVED VENDOR Incandescent Bulb: Incandescent, Double Contact Bayonet (BA15d), (S) Sign - BA15d Double-Contact Bayonet Base Lamps
APPROVED VENDORBA15d Double-Contact Bayonet Base Lamps

APPROVED VENDOR Incandescent Bulb: Incandescent, Double Contact Bayonet (BA15d), (S) Sign

The APPROVED VENDOR Incandescent Bulb is a BA15d double-contact bayonet base lamp with an S8 bulb shape. It operates at 28V AC and produces white light, identified by trade number 1638 (MPN 1638-10PK).

SKU 3G-OTH-388521

Brand
APPROVED VENDOR
Item
Incandescent Bulb: Incandescent, Double Contact Bayonet
Category
BA15d Double-Contact Bayonet Base Lamps
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

APPROVED VENDOR
Manufacturer Part Number
1638-10PK
Type
Double Contact Bayonet (BA15d), (S) Sign, S8, 1638
Voltage
28V AC
Bulb Shape
S8
Light Color
White
Trade Number
1638
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

APPROVED VENDOR Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The APPROVED VENDOR Incandescent Bulb is a BA15d double-contact bayonet base lamp with an S8 bulb shape. It operates at 28V AC and produces white light, identified by trade number 1638 (MPN 1638-10PK).

Frequently Asked Questions

What is the APPROVED VENDOR 1638 incandescent bulb used for?

The APPROVED VENDOR 1638 incandescent bulb is used for sign lighting and indicator applications requiring a compact S8 bulb shape. Its BA15d double-contact bayonet base ensures secure installation in compatible sockets, and the 28V AC white light output suits low-voltage industrial and commercial signage.

What are the specifications of the APPROVED VENDOR 1638-10PK bulb?

The APPROVED VENDOR 1638-10PK is an incandescent bulb with trade number 1638, S8 bulb shape, BA15d double-contact bayonet base, 28V AC operating voltage, and white light color. It comes in a 10-pack. These specs match standard 1638 replacement lamps for sign and indicator fixtures.

Where to buy APPROVED VENDOR 1638 bulbs in worldwide?

3G Electric supplies APPROVED VENDOR 1638-10PK incandescent bulbs worldwide. As a global industrial distributor since 1990, we handle full logistics, customs clearance, and delivery to your site. Contact us to source this BA15d base lamp for your sign or indicator applications.

How to select the correct BA15d incandescent bulb for a sign?

To select the correct BA15d incandescent bulb, match the trade number (e.g., 1638), voltage (28V AC), and bulb shape (S8) to your fixture's requirements. The APPROVED VENDOR 1638-10PK provides white light for sign applications. Always verify base type and wattage compatibility before installation.

Used in

Common applications for APPROVED VENDOR
Laboratory sampling — APPROVED VENDOR clear wide mouth glass bottles for collecting and storing liquid samples in non-sterile environments.
Steam heating maintenance — APPROVED VENDOR forged brass radiator valves for regulating steam flow in commercial building heating systems.
High-pressure cleaning — APPROVED VENDOR turbo spray nozzles for pressure washers used in industrial equipment cleaning up to 6,000 psi.
Cleanroom operations — APPROVED VENDOR vinyl task chairs for seating in ISO 5 classified manufacturing or assembly areas.
General sealing — APPROVED VENDOR natural rubber stoppers for closing laboratory flasks or test tubes in educational or research settings.
Tamper-evident security — APPROVED VENDOR brass lead and wire seals for securing utility meters, cargo containers, or access panels.

APPROVED VENDOR Products

3G Electric supplies APPROVED VENDOR ba15d double-contact bayonet base lamps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Similar products

Matched by specification & description
APPROVED VENDOR Incandescent Bulb: Incandescent, Double Contact Bayonet (BA15d), (S) Sign, S8, 1692 (MPN 1692-10PK). Key specifications — Light Color: White; Trade Number: 1692; Voltage: 28V AC; Brand: APPROVED VENDOR; Bulb Shape: S8.
APPROVED VENDOR
APPROVED VENDOR Incandescent Bulb: Incandescent, Double Contact Bayonet (BA15d), (S) Sign, S8, 1692 (MPN 1692-10PK). Key specifications — Light Color: White; Trade Number: 1692; Voltage: 28V AC; Brand: APPROVED VENDOR; Bulb Shape: S8.
APPROVED VENDOR Incandescent Bulb: Incandescent, Double Contact Bayonet (BA15d), (S) Sign, S8, 1638 (MPN 1638-1PK). Key specifications — Light Color: White; Trade Number: 1638; Voltage: 28V AC; Brand: APPROVED VENDOR; Bulb Shape: S8.
APPROVED VENDOR
APPROVED VENDOR Incandescent Bulb: Incandescent, Double Contact Bayonet (BA15d), (S) Sign, S8, 1638 (MPN 1638-1PK). Key specifications — Light Color: White; Trade Number: 1638; Voltage: 28V AC; Brand: APPROVED VENDOR; Bulb Shape: S8.
APPROVED VENDOR Incandescent Bulb: Incandescent, Double Contact Bayonet (BA15d), (S) Sign, S8, 88 (MPN 88-10PK). Key specifications — Light Color: White; Trade Number: 88; Voltage: 6.8V AC; Brand: APPROVED VENDOR; Bulb Shape: S8.
APPROVED VENDOR
APPROVED VENDOR Incandescent Bulb: Incandescent, Double Contact Bayonet (BA15d), (S) Sign, S8, 88 (MPN 88-10PK). Key specifications — Light Color: White; Trade Number: 88; Voltage: 6.8V AC; Brand: APPROVED VENDOR; Bulb Shape: S8.
APPROVED VENDOR Incandescent Bulb: Incandescent, Double Contact Bayonet (BA15d), (S) Sign, S8, 1493 (MPN 1493-10PK). Key specifications — Light Color: White; Trade Number: 1493; Voltage: 6.5V AC; Brand: APPROVED VENDOR; Bulb Shape: S8.
APPROVED VENDOR
APPROVED VENDOR Incandescent Bulb: Incandescent, Double Contact Bayonet (BA15d), (S) Sign, S8, 1493 (MPN 1493-10PK). Key specifications — Light Color: White; Trade Number: 1493; Voltage: 6.5V AC; Brand: APPROVED VENDOR; Bulb Shape: S8.
APPROVED VENDOR Incandescent Bulb: Incandescent, Double Contact Bayonet (BA15d), (S) Sign, S8, 306 (MPN 306-10PK). Key specifications — Light Color: White; Trade Number: 306; Voltage: 28V AC; Brand: APPROVED VENDOR; Bulb Shape: S8.
APPROVED VENDOR
APPROVED VENDOR Incandescent Bulb: Incandescent, Double Contact Bayonet (BA15d), (S) Sign, S8, 306 (MPN 306-10PK). Key specifications — Light Color: White; Trade Number: 306; Voltage: 28V AC; Brand: APPROVED VENDOR; Bulb Shape: S8.
APPROVED VENDOR Incandescent Bulb: Incandescent, Double Contact Bayonet (BA15d), (S) Sign, S8, 1076 (MPN 1076-10PK). Key specifications — Light Color: White; Trade Number: 1076; Voltage: 12.8V AC; Brand: APPROVED VENDOR; Bulb Shape: S8.
APPROVED VENDOR
APPROVED VENDOR Incandescent Bulb: Incandescent, Double Contact Bayonet (BA15d), (S) Sign, S8, 1076 (MPN 1076-10PK). Key specifications — Light Color: White; Trade Number: 1076; Voltage: 12.8V AC; Brand: APPROVED VENDOR; Bulb Shape: S8.

More from APPROVED VENDOR

View all APPROVED VENDOR parts
APPROVED VENDOR Incandescent Bulb: Incandescent, Double Contact Bayonet (BA15d), (S) Sign, S8, 1204. Key specifications — Light Color: White; Trade Number: 1204; Voltage: 28V AC; Brand: APPROVED VENDOR; Bulb Shape: S8.
APPROVED VENDOR
APPROVED VENDOR Incandescent Bulb: Incandescent, Double Contact Bayonet (BA15d), (S) Sign, S8, 1204. Key specifications — Light Color: White; Trade Number: 1204; Voltage: 28V AC; Brand: APPROVED VENDOR; Bulb Shape: S8.
APPROVED VENDOR Incandescent Bulb: Incandescent, Double Contact Bayonet (BA15d), (S) Sign, S6, White (MPN 6S6DC/130V). Key specifications — Light Color: White; Trade Number: 6S6DC/130V; Voltage: 130V AC; Brand: APPROVED VENDOR; Bulb Shape: S6.
APPROVED VENDOR
APPROVED VENDOR Incandescent Bulb: Incandescent, Double Contact Bayonet (BA15d), (S) Sign, S6, White (MPN 6S6DC/130V). Key specifications — Light Color: White; Trade Number: 6S6DC/130V; Voltage: 130V AC; Brand: APPROVED VENDOR; Bulb Shape: S6.
APPROVED VENDOR Incandescent Bulb: Incandescent, Double Contact Bayonet (BA15d), (S) Sign, S6, White (MPN 6S6DC/120V). Key specifications — Light Color: White; Trade Number: 6S6DC/120V; Voltage: 120V AC; Brand: APPROVED VENDOR; Bulb Shape: S6.
APPROVED VENDOR
APPROVED VENDOR Incandescent Bulb: Incandescent, Double Contact Bayonet (BA15d), (S) Sign, S6, White (MPN 6S6DC/120V). Key specifications — Light Color: White; Trade Number: 6S6DC/120V; Voltage: 120V AC; Brand: APPROVED VENDOR; Bulb Shape: S6.
APPROVED VENDOR Incandescent Bulb: Incandescent, Double Contact Bayonet (BA15d), (S) Sign, S8, 306 (MPN 306-1PK). Key specifications — Light Color: White; Trade Number: 306; Voltage: 28V AC; Brand: APPROVED VENDOR; Bulb Shape: S8.
APPROVED VENDOR
APPROVED VENDOR Incandescent Bulb: Incandescent, Double Contact Bayonet (BA15d), (S) Sign, S8, 306 (MPN 306-1PK). Key specifications — Light Color: White; Trade Number: 306; Voltage: 28V AC; Brand: APPROVED VENDOR; Bulb Shape: S8.
APPROVED VENDOR Incandescent Bulb: Incandescent, Double Contact Bayonet (BA15d), (T) Tubular, T6-1/2 (MPN 4RZX8). Key specifications — Light Color: White; Voltage: 120V AC; Brand: APPROVED VENDOR; Bulb Shape: T6-1/2.
APPROVED VENDOR
APPROVED VENDOR Incandescent Bulb: Incandescent, Double Contact Bayonet (BA15d), (T) Tubular, T6-1/2 (MPN 4RZX8). Key specifications — Light Color: White; Voltage: 120V AC; Brand: APPROVED VENDOR; Bulb Shape: T6-1/2.
APPROVED VENDOR Incandescent Bulb: Incandescent, Double Contact Bayonet (BA15d), (S) Sign, S8, 1228 (MPN 1228-10PK). Key specifications — Light Color: White; Trade Number: 1228; Voltage: 32V AC; Brand: APPROVED VENDOR; Bulb Shape: S8.
APPROVED VENDOR
APPROVED VENDOR Incandescent Bulb: Incandescent, Double Contact Bayonet (BA15d), (S) Sign, S8, 1228 (MPN 1228-10PK). Key specifications — Light Color: White; Trade Number: 1228; Voltage: 32V AC; Brand: APPROVED VENDOR; Bulb Shape: S8.
APPROVED VENDOR Incandescent Bulb: Incandescent, Double Contact Bayonet (BA15d), (G) Globe, G6, 82 (MPN 82-10PK). Key specifications — Light Color: White; Trade Number: 82; Voltage: 6.5V AC; Brand: APPROVED VENDOR; Bulb Shape: G6.
APPROVED VENDOR
APPROVED VENDOR Incandescent Bulb: Incandescent, Double Contact Bayonet (BA15d), (G) Globe, G6, 82 (MPN 82-10PK). Key specifications — Light Color: White; Trade Number: 82; Voltage: 6.5V AC; Brand: APPROVED VENDOR; Bulb Shape: G6.
APPROVED VENDOR Incandescent Bulb: Incandescent, Double Contact Bayonet (BA15d), (G) Globe, G6, 304 (MPN 304-1PK). Key specifications — Light Color: White; Trade Number: 304; Voltage: 28V AC; Brand: APPROVED VENDOR; Bulb Shape: G6.
APPROVED VENDOR
APPROVED VENDOR Incandescent Bulb: Incandescent, Double Contact Bayonet (BA15d), (G) Globe, G6, 304 (MPN 304-1PK). Key specifications — Light Color: White; Trade Number: 304; Voltage: 28V AC; Brand: APPROVED VENDOR; Bulb Shape: G6.