B112-BU Equivalent & Substitute Parts

Part Overview

The B112-BU is a 12-circuit barrier block connector manufactured by TE Connectivity AMP Connectors. This component is classified as a barrier strip terminal block with dual-wall barrier construction, designed for chassis and panel mounting applications. The B112-BU operates at 600V with a 50A current rating and accommodates wire gauges from 8-18 AWG.

The B112-BU is designated as obsolete. Identifying equivalent and substitute parts is necessary to maintain system functionality, ensure design continuity, and support ongoing maintenance and repair operations for installations utilizing this connector.

Substiute Parts

B112-BU

TE Connectivity AMP ConnectorsIn Stock: 1024B112-BU Datasheet

Current PartRFQ

H-12

Curtis IndustriesIn Stock: 707H-12 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the B112-BU is evaluated based on the following critical parameters that determine functional and mechanical compatibility:

Circuit Configuration: The substitute part must provide 12 circuits with 2 rows to maintain the same connection density and footprint compatibility.

Electrical Ratings: The substitute part must support a minimum voltage rating of 600V. Current rating may exceed the original specification without creating incompatibility.

Pitch and Spacing: The substitute part pitch of 0.652" (16.56mm) represents a 0.022" (0.56mm) deviation from the original 0.630" (16.00mm) pitch. This minor variance is within acceptable tolerance for barrier block terminal strips and does not prevent functional substitution in most applications.

Termination Method: The substitute part must utilize screw termination on the top and closed termination on the bottom to maintain compatibility with existing wiring harnesses and installation practices.

Barrier Construction: The substitute part must maintain dual-wall (2 Wall) barrier construction to preserve electrical isolation and safety characteristics.

Wire Gauge Compatibility: The substitute part accommodates 4-16 AWG, which overlaps with the original 8-18 AWG specification across the 8-16 AWG range, ensuring compatibility with existing wire installations.

Mounting Configuration: The substitute part must support chassis and panel mounting to maintain installation compatibility.

The H-12 manufactured by Curtis Industries meets all critical substitution criteria.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The B112-BU is obsolete. The H-12 is active and currently manufactured, ensuring availability for replacement and future procurement.

Compliance and Certification: Both parts are ROHS3 compliant. The H-12 carries a UL94 V-0 flammability rating, which exceeds the B112-BU specification of UL94 V-1, providing enhanced fire safety performance.

Electrical Performance: The H-12 provides a 75A current rating compared to the B112-BU's 50A rating. This increased capacity does not create incompatibility and provides additional design margin for applications operating near the original 50A specification.

Operating Temperature: The B112-BU is rated to 150°C while the H-12 is rated to 130°C. Applications requiring sustained operation above 130°C require verification that the H-12 meets thermal requirements.

Pitch Variance: The 0.022" pitch difference between the B112-BU (0.630") and H-12 (0.652") is within acceptable tolerance for barrier block terminal strips and does not prevent functional substitution in standard applications.

Wire Gauge Overlap: The H-12 accommodates 4-16 AWG, providing full compatibility with the 8-16 AWG range of existing B112-BU installations.

The H-12 is suitable for direct substitution in applications where operating temperature does not exceed 130°C and where the minor pitch variance is acceptable for the mechanical installation.

Frequently Asked Questions (FAQ)

Q: Can the H-12 directly replace the B112-BU in existing installations?

A: The H-12 provides functional equivalence for applications operating at or below 130°C. The 0.022" pitch variance is acceptable for barrier block terminal strip applications. Verify that the application thermal profile does not exceed the H-12's 130°C operating temperature limit.

Q: What is the significance of the pitch difference between the B112-BU and H-12?

A: The B112-BU has a 0.630" pitch while the H-12 has a 0.652" pitch, representing a 0.022" variance. This minor difference is within acceptable tolerance for barrier block connectors and does not prevent mechanical or electrical compatibility in standard chassis and panel mounting applications.

Q: Are there wire gauge compatibility issues when substituting the H-12 for the B112-BU?

A: The B112-BU accommodates 8-18 AWG while the H-12 accommodates 4-16 AWG. The overlap range of 8-16 AWG ensures full compatibility with existing wire installations. Wire gauges 17-18 AWG used with the B112-BU fall outside the H-12 specification and require verification.

Q: How do the current ratings compare between these parts?

A: The B112-BU is rated at 50A while the H-12 is rated at 75A. The higher H-12 rating does not create incompatibility and provides additional design margin. Applications designed for 50A operation remain within safe operating limits with the H-12.

Q: What is the difference in flammability ratings?

A: The B112-BU carries a UL94 V-1 rating while the H-12 carries a UL94 V-0 rating. The V-0 rating indicates superior flame resistance and does not create incompatibility. Applications requiring V-1 compliance are satisfied by the H-12's V-0 performance.

Q: Is the operating temperature difference a concern for substitution?

A: The B112-BU is rated to 150°C while the H-12 is rated to 130°C. Applications operating continuously above 130°C require verification that the H-12 meets thermal requirements. Applications operating at or below 130°C are fully compatible.

Q: Are both parts RoHS compliant?

A: Yes, both the B112-BU and H-12 are ROHS3 compliant, ensuring compatibility with RoHS-regulated applications and supply chains.

Q: What is the availability status of these parts?

A: The B112-BU is obsolete. The H-12 is active and currently manufactured, ensuring ongoing availability for new installations and replacements.