Pomona Electronics 3770-4 Binding Post Connector - Equivalent & Substitute Parts

Part Overview

The Pomona Electronics 3770-4 is a standard knurled binding post connector with yellow gold plating, designed for threaded and turret termination applications. This connector is classified as obsolete, making equivalent substitute parts necessary for ongoing system maintenance and new design implementations. The 3770-4 operates at 15 A current rating with a voltage specification of 33Vrms/70VDC, suitable for laboratory and test equipment applications requiring reliable electrical connections.

Substiute Parts

3770-4

Pomona ElectronicsIn Stock: 7613770-4 Datasheet

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3770-0

Pomona ElectronicsIn Stock: 12793770-0 Datasheet

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3770-2

Pomona ElectronicsIn Stock: 10083770-2 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 3770-4 are identified based on electrical and mechanical parameter equivalence within the Pomona Electronics 3770 series. The critical parameters determining substitution compatibility are:

• Termination type: Threaded and Turret (8-32 thread specification)
• Current rating: 15 A
• Voltage rating: 33Vrms/70VDC
• Cross hole diameter: 0.096" (2.43mm)
• Head size: 0.440" OD (11.18mm)
• Panel thickness accommodation: 0.070" ~ 0.250"
• Insulation material: Polycarbonate (PC)
• Nut specifications: Brass with Nickel plating

The 3770-0 (black) and 3770-2 (red) variants maintain identical electrical and mechanical specifications to the 3770-4. Substitution between these parts is valid where color differentiation is not a functional requirement. Both substitute parts are active products with current manufacturing status, providing supply continuity for the obsolete 3770-4.

Parameter Comparison

Engineering Selection Recommendations

The 3770-0 (black) and 3770-2 (red) binding post connectors are direct functional equivalents to the obsolete 3770-4 (yellow). Both substitute parts maintain identical electrical ratings, mechanical dimensions, and termination specifications. Selection between these alternatives depends on color-coding requirements within the application circuit.

The 3770-0 features tellurium copper body material compared to the standard copper in the 3770-4 and 3770-2, providing enhanced mechanical properties while maintaining equivalent electrical performance. All three variants are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.

For applications where the original yellow connector is no longer available, either the 3770-0 or 3770-2 provides full electrical and mechanical compatibility. Active product status for both substitute parts ensures supply availability and manufacturing continuity.

Frequently Asked Questions (FAQ)

Q: Can the 3770-0 or 3770-2 directly replace the obsolete 3770-4?

A: Yes. The 3770-0 and 3770-2 are electrically and mechanically equivalent to the 3770-4. All three connectors share identical termination specifications (8-32 threaded and turret), current rating (15 A), voltage rating (33Vrms/70VDC), cross hole diameter (0.096"), head size (0.440" OD), and panel thickness accommodation (0.070" ~ 0.250"). Substitution is valid where color differentiation is not a functional requirement.

Q: What is the difference between the 3770-0 and 3770-2?

A: The primary difference is connector color: the 3770-0 is black and the 3770-2 is red. The 3770-0 uses tellurium copper body material while the 3770-2 uses standard copper. Both maintain identical electrical and mechanical specifications. Color selection is typically driven by circuit identification or test equipment labeling conventions.

Q: Are all three connectors RoHS compliant?

A: Yes. The 3770-4, 3770-0, and 3770-2 are all ROHS3 compliant and REACH unaffected, meeting current environmental regulations.

Q: What is the panel thickness requirement for installation?

A: All three connectors accommodate panel thicknesses from 0.070" to 0.250" (1.77mm to 6.35mm). Verify your panel thickness falls within this range before selection.

Q: Can these connectors be used interchangeably in the same circuit?

A: Yes, provided color coding is not a functional requirement. The electrical and mechanical specifications are identical across all three variants, allowing interchangeable use within the same application.