ALZ12B48 Equivalent & Substitute Parts

Part Overview

The ALZ12B48 is a general purpose relay manufactured by Panasonic Electric Works, featuring SPDT (1 Form C) contact configuration with 16A contact rating and 48VDC coil voltage. This through-hole mounted relay is designed for industrial control applications requiring reliable switching performance across a wide operating temperature range. The part is currently active in production with full RoHS compliance and sealed construction for enhanced reliability in demanding environments.

Equivalent and substitute parts are identified based on matching critical electrical and mechanical parameters: coil voltage, contact form, contact rating, coil type, operating temperature range, and termination style. These parameters ensure functional interchangeability in circuit applications.

Substiute Parts

ALZ12B48

Panasonic Electric WorksIn Stock: 1024ALZ12B48 Datasheet

Current PartRFQ

2-1415899-4

TE Connectivity Potter & Brumfield RelaysIn Stock: 40002-1415899-4 Datasheet

SimilarRFQ

RTD14048

TE Connectivity Potter & Brumfield RelaysIn Stock: 1736RTD14048 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ALZ12B48 are qualified based on the following critical parameters that determine functional equivalence:

Mandatory Matching Parameters:

• Coil voltage: 48VDC
• Contact form: SPDT (1 Form C)
• Contact rating: 16 A minimum
• Coil type: Non Latching
• Mounting type: Through Hole
• Termination style: PC Pin
• Operating temperature range: -40°C ~ 85°C minimum
• Must operate voltage: 33.6 VDC
• Must release voltage: 4.8 VDC

Allowable Variations:

• Switching voltage: 400VAC to 440VAC maximum
• Coil current: 8.3 mA to 8.7 mA
• Operate time: 8 ms to 15 ms
• Release time: 5 ms to 6 ms
• Contact material: Silver Tin Oxide or Silver Nickel
• Coil insulation class: Class B or Class F
• Seal rating: Sealed or fully sealed construction
• Packaging format: Tube or Bulk

The identified substitute parts RTD14048 and 2-1415899-4 meet all mandatory matching parameters and fall within allowable variation ranges for secondary electrical characteristics.

Parameter Comparison

Engineering Selection Recommendations

Both RTD14048 and 2-1415899-4 are qualified substitutes for the ALZ12B48 based on electrical and mechanical parameter equivalence.

RTD14048 (TE Connectivity Potter & Brumfield Relays):

• Active product status with ROHS3 compliance
• Fully sealed construction matching the original specification
• Faster switching response (8 ms operate time vs. 15 ms)
• Available in tube packaging consistent with ALZ12B48
• Moisture sensitivity level 1 (Unlimited) matches original specification

2-1415899-4 (TE Connectivity Potter & Brumfield Relays):

• Active product status with ROHS3 compliance
• Faster switching response (8 ms operate time vs. 15 ms)
• Available in bulk packaging for high-volume applications
• Seal rating not specified; verify application requirements if sealed construction is mandatory

Selection between substitutes depends on packaging requirements (tube vs. bulk) and seal rating criticality. Both parts maintain compliance certifications (cURus, VDE equivalent through ROHS3 status) and operate within specified temperature and voltage parameters.

Frequently Asked Questions (FAQ)

Q: Can RTD14048 or 2-1415899-4 be used as direct replacements for ALZ12B48?

A: Yes, both parts are functionally equivalent for applications requiring 48VDC SPDT 16A relays with through-hole PC pin termination. All critical electrical parameters (coil voltage, contact form, contact rating, operating temperature range, must-operate and must-release voltages) are identical.

Q: What are the differences between the two substitute parts?

A: RTD14048 is packaged in tubes with fully sealed construction and moisture sensitivity level 1. The 2-1415899-4 is supplied in bulk packaging with unspecified seal rating. Both have identical electrical specifications and faster switching times (8 ms vs. 15 ms operate time) compared to the original ALZ12B48.

Q: Does the faster switching time of substitute parts affect compatibility?

A: Faster switching times (8 ms vs. 15 ms) represent improved performance and do not create compatibility issues. Applications designed for 15 ms switching will function correctly with 8 ms switching response.

Q: Are there compliance or certification differences?

A: The ALZ12B48 carries cURus and VDE approvals. Substitute parts RTD14048 and 2-1415899-4 are ROHS3 compliant. Both meet current regulatory requirements for industrial relay applications.

Q: Which substitute should be selected for sealed applications?

A: RTD14048 explicitly specifies fully sealed construction matching the ALZ12B48 specification. If sealed construction is a requirement, RTD14048 is the appropriate selection. The 2-1415899-4 seal rating is not specified and should be clarified with the supplier for sealed application requirements.

Q: What is the impact of different contact materials (AgSnO vs. AgNi)?

A: Both Silver Tin Oxide (AgSnO) and Silver Nickel (AgNi) contact materials are standard for 16A relay applications. Material selection does not affect functional equivalence for the specified electrical parameters.

Q: Can packaging format (tube vs. bulk) affect part selection?

A: Packaging format is a supply chain consideration only and does not affect electrical or mechanical compatibility. Select based on procurement volume and handling requirements.