12PSB Incandescent Lamp T-2 Telephone Slide Base Equivalent & Substitute Parts

Part Overview

The 12PSB is an incandescent lamp designed for telephone slide applications, featuring a T-2 lens form factor with a telephone slide base type 5 standard configuration. This component operates at 12V with a mean spherical candle power (MSCP) rating of 2000, delivering a clear light output suitable for indicator and illumination functions in telecommunications equipment.

The 12PSB is classified as obsolete, indicating it is no longer in active production. Due to this product status, identification of functionally equivalent substitute components is necessary for maintenance, repair, and legacy system support applications where original stock availability is limited or depleted.

Substiute Parts

12PSB

Visual Communications Company - VCCIn Stock: 92212PSB Datasheet

Current PartRFQ

12PSB-

Visual Communications Company - VCCIn Stock: 175012PSB- Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 12PSB is determined by strict alignment with the following critical parameters:

Mandatory Matching Parameters:

• Voltage Rating: 12V (electrical compatibility)
• Lens Size: T-2 (physical form factor)
• Lens Style: Round with Flat Top (optical geometry and mounting)
• Lead Style: Telephone Slide Base Type 5 Standard (electrical connection and mechanical interface)
• MSCP: 2000 (luminous intensity output)
• Color: Clear (optical transmission)
• Type: Incandescent (technology classification)

The substitute part 12PSB- meets all mandatory matching parameters. Both components are manufactured by Visual Communications Company (VCC) and share identical electrical, optical, and mechanical specifications. The primary distinction between the main part and substitute is packaging configuration and product status designation.

Parameter Comparison

Engineering Selection Recommendations

The 12PSB- is a direct functional equivalent to the 12PSB based on complete parameter alignment across all electrical, optical, and mechanical specifications. Both components are manufactured by the same supplier (Visual Communications Company - VCC) and maintain identical performance characteristics.

Selection Basis:

1. Electrical Compatibility: Both parts operate at 12V with identical MSCP output of 2000, ensuring equivalent luminous intensity in circuit applications.

2. Mechanical Compatibility: Identical lens form factor (T-2, round with flat top) and lead configuration (Telephone Slide Base Type 5 Standard) ensure direct mechanical interchangeability in existing mounting interfaces.

3. Regulatory Compliance: Both components maintain ROHS3 compliance, REACH unaffected status, and identical moisture sensitivity levels, satisfying environmental and regulatory requirements.

4. Product Status: Both the main part (Obsolete) and substitute (Not For New Designs) are discontinued products. The 12PSB- offers higher current inventory availability (1655 Pcs versus 874 Pcs), providing improved sourcing reliability for legacy system support.

5. Packaging Consideration: The substitute is supplied in box packaging, which may differ from the main part's unspecified packaging. Verify packaging requirements for your specific application workflow.

Frequently Asked Questions (FAQ)

Q: Can the 12PSB- be used as a direct replacement for the 12PSB in existing equipment?

A: Yes. The 12PSB- is electrically and mechanically identical to the 12PSB. All critical parameters—voltage rating, luminous intensity (MSCP), lens form factor, and lead configuration—are matched. Direct substitution is supported without circuit or mechanical modifications.

Q: What is the difference between the 12PSB and 12PSB-?

A: The primary differences are packaging format (12PSB- is supplied in box packaging) and product status designation (12PSB is classified as Obsolete; 12PSB- is classified as Not For New Designs). Electrical and optical performance specifications are identical.

Q: Are both parts manufactured by the same company?

A: Yes. Both the 12PSB and 12PSB- are manufactured by Visual Communications Company (VCC), ensuring consistent quality and performance standards.

Q: What does "Not For New Designs" mean for the 12PSB-?

A: This designation indicates the part is discontinued and not recommended for incorporation into new product designs. However, it remains suitable for maintenance, repair, and legacy system applications where the original part specification must be maintained.

Q: Do both parts meet current regulatory requirements?

A: Yes. Both components are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards applicable to electronic components.

Q: Which part should I select if both are available?

A: Selection should be based on inventory availability and packaging requirements. The 12PSB- offers higher current stock (1655 Pcs) compared to the 12PSB (874 Pcs). Verify that box packaging is compatible with your procurement and assembly processes.

Q: Can these parts be used in new product designs?

A: Both parts are classified as discontinued (Obsolete or Not For New Designs). For new product development, consult with Visual Communications Company or authorized distributors for current production alternatives that meet your application requirements.