TE Connectivity Potter & Brumfield Relay 1887112-4 Equivalent & Substitute Parts

Part Overview

The TE Connectivity Potter & Brumfield Relay 1887112-4 is a general purpose relay with SPDT (Single Pole Double Throw) contact configuration rated for 16A at 48VDC coil voltage. This component features through-hole mounting with PC pin termination and is designed for non-latching relay applications in industrial control systems.

The 1887112-4 is classified as obsolete product status. Identification of equivalent substitute parts is necessary to maintain system functionality and ensure continued availability for replacement, repair, and new design implementations where this relay specification is required.

Substiute Parts

1887112-4

TE Connectivity Potter & Brumfield RelaysIn Stock: 6591887112-4 Datasheet

Current PartRFQ

RTD14048

TE Connectivity Potter & Brumfield RelaysIn Stock: 1736RTD14048 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1887112-4 relay is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Coil voltage: 48VDC (exact match required)
• Contact form: SPDT (1 Form C) configuration
• Contact current rating: 16 A minimum
• Switching voltage: 400VAC or greater
• Must operate voltage: 33.6 VDC or lower
• Must release voltage: 4.8 VDC or higher
• Coil type: Non-latching operation

Mechanical Equivalence Requirements:

• Mounting type: Through-hole
• Termination style: PC pin
• Contact material: Silver Nickel (AgNi)

Compliance Requirements:

• RoHS3 compliance
• ECCN classification: EAR99

The substitute part RTD14048 meets all electrical and mechanical equivalence criteria and maintains full compliance with applicable standards. The primary distinction between the main part and substitute is product status (obsolete versus active) and operating temperature range extension.

Parameter Comparison

Engineering Selection Recommendations

The RTD14048 is a direct functional equivalent to the 1887112-4 for all electrical and mechanical specifications. Selection of RTD14048 as a substitute is supported by the following factors:

Product Status: The RTD14048 maintains active product status with TE Connectivity Potter & Brumfield Relays, ensuring continued availability and supply chain reliability. The 1887112-4 is classified as obsolete, making RTD14048 the appropriate selection for ongoing applications.

Compliance Certification: Both parts maintain ROHS3 compliance and EAR99 ECCN classification, ensuring regulatory equivalence for industrial control applications.

Thermal Performance: The RTD14048 extends the operating temperature range to 85°C (compared to 70°C for the 1887112-4), providing enhanced thermal margin for applications operating in elevated ambient conditions while maintaining all other electrical specifications.

Electrical Specifications: All critical electrical parameters including coil voltage, contact rating, switching voltage, operate/release voltages, and timing characteristics are identical between the two parts.

Mechanical Compatibility: Through-hole mounting and PC pin termination are identical, ensuring direct board-level compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can RTD14048 be used as a direct replacement for 1887112-4 in existing designs?

A: Yes. The RTD14048 is electrically and mechanically equivalent to the 1887112-4 across all critical parameters including coil voltage (48VDC), contact configuration (SPDT), current rating (16A), switching voltage (400VAC), and timing characteristics (8ms operate, 6ms release). Through-hole mounting and PC pin termination are identical, enabling direct board-level substitution.

Q: What is the primary difference between these two relays?

A: The primary differences are product status and operating temperature range. The 1887112-4 is obsolete, while RTD14048 is active product. The RTD14048 extends the maximum operating temperature to 85°C compared to 70°C for the 1887112-4. All electrical specifications remain equivalent.

Q: Are there packaging differences between 1887112-4 and RTD14048?

A: The 1887112-4 is supplied in standard packaging, while RTD14048 is supplied in tube packaging. Both parts use identical through-hole PC pin termination and are compatible with standard PCB assembly processes.

Q: Do both relays meet the same compliance standards?

A: Yes. Both the 1887112-4 and RTD14048 are ROHS3 compliant and classified as EAR99 for export control purposes. Compliance certifications are equivalent.

Q: What is the coil resistance specification for these relays?

A: Both relays have a coil resistance of 5520 Ohms (5.52 kOhms). This specification is identical and ensures equivalent electrical behavior in circuit applications.

Q: Can RTD14048 be used in applications requiring the -40°C to 70°C temperature range?

A: Yes. The RTD14048 operating temperature range of -40°C to 85°C fully encompasses the -40°C to 70°C specification of the 1887112-4. The extended upper temperature limit provides additional thermal margin without compromising performance in the original temperature range.

Q: Are the must-operate and must-release voltage specifications identical?

A: Yes. Both relays have identical must-operate voltage (33.6 VDC) and must-release voltage (4.8 VDC) specifications, ensuring equivalent control circuit behavior and reliability.