OSTOQ201251 Terminal Block Header - Equivalent & Substitute Parts

Part Overview

The OSTOQ201251 is a 20-position terminal block header manufactured by On-Shore Technology, designed for right-angle solder mounting applications. This component features male pins with 4-side shrouding and a 4.6mm pitch configuration. The part is currently active in production with 1094 units in stock. Terminal block headers of this specification are essential in applications requiring secure electrical connections with standardized pitch spacing and shrouded pin protection. Substitute parts may be required due to supply chain considerations, specific mounting requirements, or application-specific performance parameters.

Substiute Parts

OSTOQ201251

On-Shore TechnologyIn Stock: 1150OSTOQ201251 Datasheet

Current PartRFQ

1844391

Phoenix ContactIn Stock: 12021844391 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the OSTOQ201251 is determined by the following critical parameters:

• Position Count: 20 positions (fixed requirement)
• Pitch Specification: 0.138" (4.60mm) nominal spacing
• Connector Type: Header with male pins, 4-side shrouded configuration
• Header Orientation: 90° right-angle mounting
• Voltage Rating: Minimum 300 V UL compliance
• Operating Temperature Range: -30°C to 105°C minimum
• Regulatory Compliance: ROHS3 Compliant, REACH Unaffected

The substitute part 1844391 (Phoenix Contact COMBICON MC series) meets these core electrical and mechanical parameters. While mounting methodology differs (through-hole versus solder), both termination styles are compatible with standard PCB assembly processes for this connector class. The substitute maintains equivalent position count, pitch spacing, shrouded pin configuration, and voltage rating specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the OSTOQ201251 and 1844391 are active production components with ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component manufacturing and distribution.

The primary differentiation between these parts is mounting methodology: the OSTOQ201251 utilizes solder termination, while the 1844391 employs through-hole mounting. Selection between these alternatives depends on PCB design specifications and assembly process requirements. Both components maintain equivalent electrical performance at 300 V UL rating and support the full -30°C to 105°C operating temperature range.

The Phoenix Contact 1844391 includes additional material specification (PBT housing with UL94 V-0 flammability rating) and current rating data (12A IEC, 8A UL), providing supplementary performance documentation. The On-Shore Technology OSTOQ201251 maintains active inventory status with 1094 units available.

Frequently Asked Questions (FAQ)

Q: Can the 1844391 directly replace the OSTOQ201251 in existing designs?

A: Direct replacement requires PCB layout compatibility. The OSTOQ201251 uses solder termination while the 1844391 uses through-hole mounting. Both maintain identical pitch (4.60mm), position count (20), and voltage rating (300V UL). PCB footprint and assembly process must accommodate the mounting style difference.

Q: Are the pitch specifications identical between these parts?

A: Yes. Both components specify 0.138" (4.60mm) pitch with 20 positions per level, ensuring mechanical and electrical compatibility at the connector interface level.

Q: What is the significance of the shrouded (4 side) configuration?

A: The 4-side shrouded design provides mechanical protection and polarization guidance for mated connectors. Both the OSTOQ201251 and 1844391 incorporate this feature, maintaining equivalent connector safety and alignment characteristics.

Q: Do both parts meet current regulatory compliance requirements?

A: Yes. Both components are ROHS3 compliant and REACH unaffected, meeting current electronic component regulatory standards for manufacturing and distribution in regulated markets.

Q: What is the difference in contact tail length between these parts?

A: The OSTOQ201251 specifies 0.138" (4.60mm) contact tail length, while the 1844391 specifies 0.134" (3.40mm). This minor dimensional variance reflects different manufacturing specifications and should be evaluated against specific PCB design requirements.