BA9SW28A LED Lamp Replacement - Equivalent & Substitute Parts

Part Overview

The BA9SW28A is an LED lamp replacement with a miniature bayonet (BA9S) base, designed for 28V applications. This white LED lamp provides a direct replacement for multiple miniature bayonet lamps, offering a rated output of 2070 millicandela. The part is currently active in production with full RoHS3 compliance and unlimited moisture sensitivity rating, making it suitable for industrial and commercial lighting applications where bayonet-based LED replacements are required.

Substitute parts become necessary when system voltage requirements differ from the primary 28V specification, or when inventory availability requires selection from alternative voltage ratings within the same mechanical and optical family.

Substiute Parts

BA9SW28A

APEM Inc.In Stock: 1055BA9SW28A Datasheet

Current PartRFQ

BA9SW24A

APEM Inc.In Stock: 779BA9SW24A Datasheet

Parametric EquivalentRFQ

BA9SW12A

APEM Inc.In Stock: 1020BA9SW12A Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BA9SW28A is determined by strict adherence to the following parameters:

Fixed Parameters (Must Match):

• Base Type: Miniature Bayonet (BA9S)
• Color: White
• Size / Dimension: 0.394" Dia x 0.945" H (10.00mm x 24.00mm)
• Millicandela Rating: 2070mcd
• Configuration: Single
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)
• REACH Status: REACH Unaffected

Variable Parameter (Determines Substitution Family):

• Voltage - Forward (Vf) (Typ): 28V (primary), 24V or 12V (substitutes)

The BA9SW28A belongs to a voltage-variant family of white LED lamps with identical mechanical and optical characteristics. Substitute parts BA9SW24A and BA9SW12A maintain all fixed parameters while offering alternative voltage ratings for systems operating at 24V or 12V respectively.

Parameter Comparison

Engineering Selection Recommendations

All three parts in this family maintain active production status with full RoHS3 compliance and REACH unaffected certification. Selection between BA9SW28A, BA9SW24A, and BA9SW12A is determined exclusively by the system voltage requirement:

• BA9SW28A: Select for 28V DC systems
• BA9SW24A: Select for 24V DC systems
• BA9SW12A: Select for 12V DC systems

All parts are mechanically and optically interchangeable within their respective voltage domains. Inventory availability across all three variants supports flexible procurement strategies.

Frequently Asked Questions (FAQ)

Q: Can BA9SW24A or BA9SW12A be used in a 28V circuit designed for BA9SW28A?

A: No. Each part is rated for its specified forward voltage. Using a lower-voltage rated part in a higher-voltage circuit will result in component failure. Conversely, using a higher-voltage rated part in a lower-voltage circuit may result in insufficient illumination or premature failure.

Q: Are all three parts mechanically identical?

A: Yes. All three parts share identical dimensions (0.394" Dia x 0.945" H / 10.00mm x 24.00mm) and use the same miniature bayonet (BA9S) base type. They are physically interchangeable in terms of socket fit and mounting.

Q: Do all parts produce the same light output?

A: Yes. All three parts are rated at 2070 millicandela, providing identical optical performance within their respective voltage ratings.

Q: What is the packaging format for these parts?

A: All parts are supplied in bag packaging.

Q: Are these parts suitable for international applications?

A: Yes. All parts are RoHS3 compliant and REACH unaffected, meeting international environmental and regulatory standards.

Q: How do I determine which voltage rating my system requires?

A: Consult your system documentation or measure the DC voltage supplied to the lamp socket. Select the part number matching your system voltage: 28V for BA9SW28A, 24V for BA9SW24A, or 12V for BA9SW12A.