OSTVF205251 Equivalent & Substitute Parts

Part Overview

The OSTVF205251 is a 20-position terminal block header manufactured by On-Shore Technology, designed for through-hole solder mounting applications. This component features male pins with 4-side shrouding, 0.200" (5.08mm) pitch spacing, and right-angle orientation. The part is currently active in production with 1022 units in stock. Terminal block headers of this specification are essential in applications requiring reliable electrical connections with mechanical strain relief and organized wire management in industrial control systems, power distribution, and signal routing applications.

Substiute Parts

OSTVF205251

On-Shore TechnologyIn Stock: 1060OSTVF205251 Datasheet

Current PartRFQ

1842144

Phoenix ContactIn Stock: 7531842144 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the OSTVF205251 is determined by strict alignment of the following critical parameters:

• Position Count & Configuration: 20 positions arranged as 10 per level across 2 levels
• Pitch Specification: 0.200" (5.08mm) center-to-center spacing
• Header Type & Orientation: Male pins, shrouded (4-side), 90° right-angle configuration
• Termination & Mounting: Solder termination with through-hole mounting
• Electrical Ratings: Minimum 15 A (UL) current capacity and 300 V (UL) voltage rating
• Compliance Standards: UL94 V-0 flammability rating, RoHS compliance

The Phoenix Contact 1842144 qualifies as a direct substitute based on matching all critical parameters: identical position count, pitch, header type, orientation, termination method, and mounting style. Both parts meet or exceed the specified electrical ratings and flammability requirements.

Parameter Comparison

Engineering Selection Recommendations

Both the OSTVF205251 and 1842144 are active production components with full compliance certifications. Selection between these parts should be based on the following factors:

OSTVF205251 (On-Shore Technology): Select this part when the original design specification requires the exact contact tail length of 0.157" (4.00mm) or when On-Shore Technology supply chain continuity is a requirement. Current inventory of 1022 units supports immediate availability.

1842144 (Phoenix Contact): This substitute is suitable for applications where the shorter contact tail length of 0.126" (3.20mm) is acceptable or beneficial for PCB design constraints. The Phoenix Contact COMBICON MDSTBA series provides side stacking capability and IEC ratings (10 A at 400 V) that exceed UL specifications. Inventory of 725 units is available.

Both parts carry UL94 V-0 flammability certification and RoHS compliance, meeting industrial safety and environmental standards. The contact tail length difference of 0.031" (0.80mm) is the primary mechanical consideration for PCB layout compatibility.

Frequently Asked Questions (FAQ)

Q: Can the Phoenix Contact 1842144 be used as a direct replacement for the OSTVF205251 in existing designs?

A: Yes, the 1842144 qualifies as a direct substitute based on matching electrical ratings, position count, pitch, header type, and orientation. The primary design consideration is the contact tail length difference: 0.157" (4.00mm) for the OSTVF205251 versus 0.126" (3.20mm) for the 1842144. PCB through-hole depth and solder pad layout must accommodate this 0.031" (0.80mm) variation.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is determined by: 20-position configuration (10 per level, 2 levels), 0.200" (5.08mm) pitch, male pins with 4-side shrouding, 90° right-angle orientation, solder termination, through-hole mounting, minimum 15 A UL current rating, minimum 300 V UL voltage rating, and UL94 V-0 flammability compliance.

Q: Are there differences in housing material between these parts?

A: Yes. The OSTVF205251 uses Thermoplastic housing, while the 1842144 uses Polybutylene Terephthalate (PBT). Both materials meet UL94 V-0 flammability requirements. PBT offers enhanced chemical resistance and dimensional stability at elevated temperatures.

Q: What is the significance of the side stacking feature on the 1842144?

A: Side stacking capability on the Phoenix Contact 1842144 allows multiple terminal block headers to be mechanically connected side-by-side for expanded position counts in modular designs. The OSTVF205251 does not specify this feature.

Q: Do both parts meet the same voltage and current specifications?

A: Both parts meet the UL specifications of 15 A and 300 V. The 1842144 additionally carries IEC ratings of 10 A at 400 V, which exceed the UL requirements. For applications requiring IEC compliance, the 1842144 provides dual certification.

Q: What is the operating temperature range for these components?

A: The OSTVF205251 specifies an operating temperature range of -30°C to 105°C. The 1842144 does not provide an operating temperature specification in the available data. For temperature-critical applications, the OSTVF205251 provides explicit thermal performance documentation.