ALD112 Equivalent & Substitute Parts

Part Overview

The ALD112 is a general purpose relay manufactured by Panasonic Electric Works, featuring SPST-NO (1 Form A) contact configuration with 12VDC coil voltage and 3A contact rating. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing system maintenance and new design implementations. The relay is designed for through-hole mounting with PC pin termination and operates across a temperature range of -40°C to 70°C.

Substiute Parts

ALD112

Panasonic Electric WorksIn Stock: 2344ALD112 Datasheet

Current PartRFQ

ALDP112W

Panasonic Electric WorksIn Stock: 13383ALDP112W Datasheet

DirectRFQ

PCJ-112D3M,301

TE Connectivity Potter & Brumfield RelaysIn Stock: 1732PCJ-112D3M,301 Datasheet

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PCJ-112D3MH,301

TE Connectivity Potter & Brumfield RelaysIn Stock: 22410PCJ-112D3MH,301 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ALD112 is determined by the following critical parameters:

• Coil Voltage: Must be 12VDC to ensure direct compatibility with existing circuit designs
• Contact Form: Must be SPST-NO (1 Form A) to maintain identical switching functionality
• Mounting Type: Must be through-hole to fit existing PCB layouts
• Termination Style: Must be PC pin for direct connection compatibility
• Coil Resistance: Must be 720 Ohms to ensure proper circuit operation
• Coil Current: Must be 16.7 mA for driver circuit compatibility

Substitute parts are grouped into two categories: direct equivalents (matching all critical parameters) and similar alternatives (matching core electrical parameters with acceptable variations in contact rating or temperature range).

Parameter Comparison

Engineering Selection Recommendations

ALDP112W is the primary substitute for new designs and ongoing production. This part maintains all critical electrical parameters (12VDC coil, 720 Ohm resistance, 16.7 mA coil current, SPST-NO contact form) while offering an active product status from the original manufacturer. The contact rating increase to 5A provides enhanced load capacity without affecting circuit compatibility. ALDP112W carries ROHS3 compliance and extended operating temperature range (-40°C to 85°C), making it suitable for applications requiring higher environmental robustness.

PCJ-112D3MH,301 and PCJ-112D3M,301 are functionally equivalent alternatives from TE Connectivity Potter & Brumfield Relays. Both maintain identical electrical specifications to the ALD112 (3A contact rating, 12VDC coil, 720 Ohm resistance). PCJ-112D3MH,301 features fully sealed construction, while PCJ-112D3M,301 provides sealed flux protection. Both are ROHS3 compliant and operate across -40°C to 85°C. These parts are suitable for direct replacement in existing applications where TE Connectivity sourcing is preferred or where sealed relay construction is required.

Frequently Asked Questions (FAQ)

Q: Can ALDP112W replace ALD112 in existing designs? A: Yes. ALDP112W maintains all critical electrical parameters: 12VDC coil voltage, 720 Ohm coil resistance, 16.7 mA coil current, SPST-NO contact form, through-hole mounting, and PC pin termination. The increased contact rating (5A vs 3A) is a non-breaking change that enhances load capacity.

Q: What is the difference between PCJ-112D3MH,301 and PCJ-112D3M,301? A: Both parts are electrically identical with matching coil voltage, resistance, current, and contact ratings. The primary difference is seal rating: PCJ-112D3MH,301 is fully sealed, while PCJ-112D3M,301 provides sealed flux protection. Selection depends on environmental exposure requirements.

Q: Are there packaging differences between substitutes? A: Yes. ALD112 is supplied in standard packaging, ALDP112W in tray packaging, PCJ-112D3MH,301 in tray packaging, and PCJ-112D3M,301 in bulk packaging. Packaging does not affect electrical or mechanical compatibility.

Q: What is the operating temperature difference between ALD112 and its substitutes? A: ALD112 operates from -40°C to 70°C. ALDP112W, PCJ-112D3MH,301, and PCJ-112D3M,301 all extend the upper limit to 85°C, providing 15°C additional thermal margin. This is a non-breaking improvement for applications operating near the original temperature limits.

Q: Are all substitutes RoHS compliant? A: ALDP112W, PCJ-112D3MH,301, and PCJ-112D3M,301 are all ROHS3 compliant. ALD112 compliance status is not specified in available documentation.