Weidmüller 1521660000 Terminal Block Header - Equivalent & Substitute Parts

Part Overview

The Weidmüller 1521660000 is a 23-position terminal block header with male pins, shrouded on four sides, designed for 0.200" (5.08mm) pitch vertical through-hole mounting. This component belongs to the Omnimate SL series and is rated for IEC 18A at 400V and UL 15A at 300V. The part is currently listed as obsolete, making identification of suitable substitute components essential for ongoing system maintenance and new design implementations where this connector type is required.

Substiute Parts

1521660000

WeidmüllerIn Stock: 12241521660000 Datasheet

Current PartRFQ

1148010000

WeidmüllerIn Stock: 7381148010000 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The substitute part 1148010000 is classified as a direct equivalent based on the following critical parameters that determine substitution validity:

• Electrical Compatibility: Both parts maintain the same pitch (0.200"/5.08mm), position count (23), and connector type (header with male pins, shrouded on four sides)
• Mechanical Compatibility: Identical mounting configuration (through-hole, vertical orientation), contact tail length (0.126"/3.20mm), and insulation height (0.472"/12.00mm)
• Environmental Ratings: Matching operating temperature range (-50°C to 100°C), identical flammability rating (UL94 V-0), and equivalent moisture sensitivity level (MSL 1)
• Regulatory Compliance: Both parts are RoHS compliant and REACH unaffected
• Current/Voltage Ratings: The substitute part provides equal or superior electrical ratings (IEC 24A/400V vs. 18A/400V; UL 18.5A/300V vs. 15A/300V)

The primary distinction is product status: the main part is obsolete while the substitute is active, and housing material differs (PBT vs. glass-filled polyamide), though both meet the same flammability and performance requirements.

Parameter Comparison

Engineering Selection Recommendations

The Weidmüller 1148010000 is the direct substitute for the obsolete 1521660000. Selection of this substitute is supported by:

• Product Availability: The substitute is active and currently in stock (727 pcs), whereas the main part is obsolete
• Electrical Performance: The substitute meets or exceeds all electrical specifications, with higher current ratings (24A IEC vs. 18A IEC; 18.5A UL vs. 15A UL)
• Regulatory Compliance: Both parts maintain identical RoHS compliance, REACH status, and UL94 V-0 flammability certification
• Mechanical Interchangeability: Identical pitch, position count, mounting configuration, and contact dimensions ensure direct PCB compatibility
• Environmental Specifications: Matching operating temperature range and moisture sensitivity level ensure equivalent performance across environmental conditions

The housing material difference (glass-filled polyamide vs. PBT) does not affect substitution validity, as both materials meet the same flammability and performance requirements for this application class.

Frequently Asked Questions (FAQ)

Q: Can the 1148010000 be used as a direct replacement for the 1521660000 on existing PCBs?

A: Yes. Both parts share identical pitch (5.08mm), position count (23), mounting type (through-hole vertical), and contact dimensions (0.126" tail length, 0.472" insulation height). PCB footprints are compatible without modification.

Q: What is the difference in housing material, and does it affect performance?

A: The main part uses polybutylene terephthalate (PBT), while the substitute uses glass-filled polyamide (PA). Both materials achieve UL94 V-0 flammability rating and are suitable for the same operating temperature range (-50°C to 100°C). Material selection does not impact electrical or mechanical compatibility.

Q: Are the electrical ratings of the substitute adequate for applications designed for the main part?

A: Yes. The substitute provides equal or superior electrical ratings. For IEC standards, it is rated 24A at 400V compared to the main part's 18A at 400V. For UL standards, it is rated 18.5A at 300V compared to 15A at 300V. Applications designed for the main part will operate within the substitute's electrical envelope.

Q: What is the packaging difference between these parts?

A: The main part (1521660000) is listed with no specified packaging, while the substitute (1148010000) is supplied in bulk packaging. This affects order quantities and handling but does not impact component functionality or compatibility.

Q: Are both parts RoHS compliant?

A: Yes. Both the 1521660000 and 1148010000 are RoHS compliant and REACH unaffected, meeting current regulatory requirements for electronic component procurement.

Q: Why is the main part listed as obsolete?

A: Product obsolescence typically reflects manufacturer discontinuation decisions. The substitute 1148010000 remains active and is the recommended source for this connector type within the Omnimate SL series.