RTB14048F Equivalent & Substitute Parts

Part Overview

The RTB14048F is a general purpose relay manufactured by TE Connectivity Potter & Brumfield Relays, classified as an active product. This SPDT (Single Pole Double Throw) relay features a 48VDC coil, 12A contact rating, and through-hole mounting configuration. The relay operates across an industrial temperature range of -40°C to 85°C and is fully sealed with RoHS3 compliance. Alternative equivalent parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications requiring SPDT relay functionality at 48VDC coil voltage.

Substiute Parts

RTB14048F

TE Connectivity Potter & Brumfield RelaysIn Stock: 907RTB14048F Datasheet

Current PartRFQ

JW1FSN-DC48V

Panasonic Electric WorksIn Stock: 1811JW1FSN-DC48V Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RTB14048F is determined by the following critical parameters:

Primary Matching Criteria:

• Coil voltage: 48VDC (exact match required)
• Contact form: SPDT (1 Form C) configuration
• Mounting type: Through hole
• Termination style: PC pin
• Coil type: Non latching
• Seal rating: Fully sealed
• Contact material: Silver Nickel (AgNi)

Secondary Compatibility Factors:

• Must operate voltage: 33.6 VDC minimum
• Must release voltage: 4.8 VDC maximum
• RoHS3 compliance status
• Moisture sensitivity level: MSL 1 (unlimited)

The substitute part JW1FSN-DC48V from Panasonic Electric Works satisfies all primary matching criteria. The contact rating differential (10A versus 12A) represents a functional limitation that must be evaluated against specific application current requirements. Operating temperature range and switching voltage specifications differ and require assessment based on end-use conditions.

Parameter Comparison

Engineering Selection Recommendations

RTB14048F Selection Criteria: The RTB14048F is appropriate for applications requiring maximum contact current of 12A at 48VDC coil voltage. This part supports switching voltages up to 400VAC and operates across the extended temperature range of -40°C to 85°C. The faster operate time of 8 ms provides responsive switching performance. RoHS3 compliance and EAR99 export classification apply. This part is active and in stock.

JW1FSN-DC48V Selection Criteria: The JW1FSN-DC48V is appropriate for applications where contact current requirements do not exceed 10A at 48VDC coil voltage. This part supports switching voltages up to 250VAC and 30VDC, with operating temperature range limited to -40°C to 60°C. The faster release time of 5 ms provides rapid de-energization. RoHS3 compliance and EAR99 export classification apply. This part is active and in stock with higher inventory availability.

Substitution Constraints: The JW1FSN-DC48V cannot substitute for the RTB14048F in applications requiring contact currents exceeding 10A. The reduced maximum switching voltage and narrower operating temperature range must be evaluated against application specifications. The increased operate time (15 ms versus 8 ms) and higher coil current (11 mA versus 8.7 mA) represent functional differences requiring assessment.

Frequently Asked Questions (FAQ)

Q: Can the JW1FSN-DC48V replace the RTB14048F in all applications?

A: No. The JW1FSN-DC48V has a maximum contact rating of 10A, compared to 12A for the RTB14048F. Substitution is valid only for applications where the contact current requirement does not exceed 10A. The reduced maximum switching voltage (250VAC versus 400VAC) and narrower operating temperature range (-40°C to 60°C versus -40°C to 85°C) must also be verified against application requirements.

Q: What are the key electrical differences between these relays?

A: The RTB14048F provides higher contact current capacity (12A versus 10A), higher maximum switching voltage (400VAC versus 250VAC), faster operate time (8 ms versus 15 ms), and lower coil current draw (8.7 mA versus 11 mA). The JW1FSN-DC48V offers faster release time (5 ms versus 6 ms) and lower coil resistance (4.4 kOhms versus 5.52 kOhms).

Q: Are both relays RoHS compliant?

A: Yes. Both the RTB14048F and JW1FSN-DC48V are RoHS3 compliant with MSL 1 (unlimited) moisture sensitivity ratings and EAR99 export classification.

Q: What is the impact of the different operating temperature ranges?

A: The RTB14048F operates from -40°C to 85°C, while the JW1FSN-DC48V operates from -40°C to 60°C. Applications requiring operation above 60°C must use the RTB14048F. The RTB14048F is the only option for high-temperature industrial environments.

Q: How do the coil specifications differ?

A: Both relays require 48VDC coil voltage with identical must-operate (33.6 VDC) and must-release (4.8 VDC) thresholds. The RTB14048F draws 8.7 mA with 5.52 kOhms coil resistance, while the JW1FSN-DC48V draws 11 mA with 4.4 kOhms coil resistance. The lower coil resistance of the JW1FSN-DC48V results in higher current draw.

Q: Are the mounting and termination styles identical?

A: Yes. Both relays feature through-hole mounting with PC pin termination, enabling direct board-level substitution from a mechanical perspective. Electrical parameter compatibility must still be verified.

Q: What switching voltage limitations apply to each relay?

A: The RTB14048F supports switching voltages up to 400VAC maximum. The JW1FSN-DC48V supports switching voltages up to 250VAC or 30VDC maximum. Applications requiring switching voltages above 250VAC must use the RTB14048F.