ARXP1206 Equivalent & Substitute Parts Reference

Part Overview

The ARXP1206 is a latching dual-coil RF relay manufactured by Panasonic Electric Works, designed for 6VDC coil operation with SPDT contact configuration and 500mA switching capacity. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations. The relay features through-hole PC pin termination suitable for traditional PCB assembly methods.

Substiute Parts

ARXP1206

Panasonic Electric WorksIn Stock: 791ARXP1206 Datasheet

Current PartRFQ

ARN12A4H

Panasonic Electric WorksIn Stock: 816ARN12A4H Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The ARN12A4H qualifies as a functional substitute for the ARXP1206 based on the following critical parameters:

Matching Electrical Characteristics:

• Latching dual-coil relay architecture
• SPDT (1 Form C) contact configuration
• Gold-plated contact material
• 400mW coil power rating
• SPDT contact form maintained

Operational Compatibility Factors:

• Coil voltage: ARN12A4H operates at 4.5VDC versus ARXP1206 at 6VDC, with ARXP1206 must-operate specification of 4.5VDC enabling operation within ARN12A4H nominal range
• Contact current rating: ARN12A4H supports 500mA switching capacity, matching ARXP1206 requirements
• Switching voltage: Both components operate within 30VDC maximum specification
• Operating temperature: ARN12A4H range of -40°C ~ 85°C encompasses ARXP1206 range of -40°C ~ 70°C
• Response time: ARN12A4H operates at 5ms (operate and release), faster than ARXP1206 at 10ms

Regulatory Alignment:

• Both components share identical ECCN (EAR99) and HTSUS (8536.41.0020) classifications
• ARN12A4H carries RoHS Compliant certification

Primary Substitution Limitation:

• Mounting and termination differ: ARXP1206 uses through-hole PC pin termination; ARN12A4H uses surface-mount gull-wing termination, requiring PCB redesign for direct replacement

Parameter Comparison

Engineering Selection Recommendations

For Direct Functional Replacement (Obsolete Component Mitigation):

The ARN12A4H serves as the primary active-status equivalent for ARXP1206 applications. Selection of ARN12A4H is supported by:

• Active product status ensuring long-term availability and supply chain continuity
• RoHS Compliant certification meeting current regulatory requirements
• Identical contact configuration (SPDT) and current rating (500mA)
• Sealed flux-protection design providing enhanced environmental robustness
• Faster response characteristics (5ms versus 10ms) suitable for time-critical switching applications
• Extended operating temperature range (-40°C ~ 85°C) providing broader thermal margin

Implementation Consideration:

Substitution requires PCB redesign due to termination style change from through-hole PC pin to surface-mount gull-wing configuration. Coil voltage reduction from 6VDC to 4.5VDC necessitates driver circuit adjustment to ensure proper relay energization within the 3.38VDC must-operate specification.

Frequently Asked Questions (FAQ)

Q: Can ARN12A4H directly replace ARXP1206 without PCB modification?

A: No. ARN12A4H uses surface-mount gull-wing termination while ARXP1206 uses through-hole PC pin termination. PCB layout redesign is required for physical mounting compatibility.

Q: What is the impact of coil voltage difference between ARXP1206 (6VDC) and ARN12A4H (4.5VDC)?

A: ARXP1206 specifies a must-operate voltage of 4.5VDC, which aligns with ARN12A4H nominal coil voltage. Driver circuits must be adjusted to supply 4.5VDC nominal to ARN12A4H rather than 6VDC. The lower must-operate specification of ARN12A4H (3.38VDC) provides additional operational margin.

Q: Are both relays suitable for the same switching applications?

A: Both components maintain identical SPDT contact configuration and 500mA current rating. ARN12A4H provides faster switching response (5ms versus 10ms) and operates across a wider temperature range (-40°C ~ 85°C versus -40°C ~ 70°C), making it suitable for equivalent or enhanced switching applications.

Q: What regulatory certifications apply to ARN12A4H?

A: ARN12A4H carries RoHS Compliant certification and shares identical ECCN (EAR99) and HTSUS (8536.41.0020) classifications with ARXP1206, ensuring regulatory alignment for export and procurement purposes.

Q: Does ARN12A4H provide any additional protection features?

A: ARN12A4H includes sealed flux-protection design, providing enhanced environmental robustness compared to ARXP1206 specifications. This feature supports applications requiring protection against flux residue and environmental contamination.

Q: What is the coil resistance difference and its significance?

A: ARXP1206 coil resistance is 90 Ohms; ARN12A4H is 50.6 Ohms. This difference reflects the lower coil voltage (4.5VDC versus 6VDC) while maintaining equivalent 400mW power rating. Driver circuit impedance matching must account for this resistance change.