OJ-SS-148HM,000 Equivalent & Substitute Parts

Part Overview

The OJ-SS-148HM,000 is a general purpose relay manufactured by TE Connectivity Potter & Brumfield Relays. This SPST-NO (1 Form A) relay operates at 48VDC coil voltage with a 10A contact rating and is designed for through-hole mounting on printed circuit boards. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain functional compatibility for existing applications and new designs requiring this relay specification.

Substiute Parts

OJ-SS-148HM,000

TE Connectivity Potter & Brumfield RelaysIn Stock: 897OJ-SS-148HM,000 Datasheet

Current PartRFQ

OJ-SS-148HM2,000

TE Connectivity Potter & Brumfield RelaysIn Stock: 1107OJ-SS-148HM2,000 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OJ-SS-148HM,000 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Coil voltage: 48VDC
• Contact form: SPST-NO (1 Form A)
• Contact rating: 10 A
• Switching voltage: 277VAC, 30VDC - Max
• Mounting type: Through Hole
• Termination style: PC Pin
• Coil current: 9.4 mA
• Coil resistance: 5.12 kOhms
• Seal rating: Sealed - Flux Protection
• Base product number: OJ-SS

The OJ-SS-148HM2,000 satisfies all mandatory matching parameters and is classified as an active product, making it a direct functional equivalent suitable for replacement applications.

Parameter Comparison

Engineering Selection Recommendations

The OJ-SS-148HM2,000 is the direct active equivalent for the obsolete OJ-SS-148HM,000. Both parts maintain identical electrical and mechanical specifications across all critical functional parameters, including coil voltage, contact configuration, current rating, and switching characteristics.

The OJ-SS-148HM2,000 offers the following advantages:

Product Status: Active manufacturing status ensures ongoing availability and supply chain continuity, eliminating obsolescence risk associated with the OJ-SS-148HM,000.

Compliance: Both parts maintain ROHS3 compliance and EAR99 export classification, ensuring regulatory alignment for existing and new applications.

Enhanced Operating Range: The OJ-SS-148HM2,000 provides an extended operating temperature range (-40°C to 105°C) compared to the original part (-30°C to 70°C), supporting deployment in broader environmental conditions.

Contact Material Enhancement: The substitute part utilizes Silver Tin Oxide (AgSnO) contact material, providing improved contact durability and arc resistance compared to the pure silver (Ag) contacts of the original part.

Coil Insulation: The OJ-SS-148HM2,000 specifies Class F coil insulation, indicating enhanced thermal stability for extended operational life.

Frequently Asked Questions (FAQ)

Q: Can the OJ-SS-148HM2,000 directly replace the OJ-SS-148HM,000 in existing circuit designs?

A: Yes. The OJ-SS-148HM2,000 maintains identical coil voltage (48VDC), contact form (SPST-NO), current rating (10A), switching voltage (277VAC, 30VDC max), mounting type (through hole), and termination style (PC pin). All electrical and mechanical interface parameters are equivalent, enabling direct substitution without circuit modification.

Q: What are the differences in operating voltage thresholds between these parts?

A: The OJ-SS-148HM,000 specifies a must-operate voltage of 33.6VDC and must-release voltage of 2.4VDC. The OJ-SS-148HM2,000 specifies a must-operate voltage of 36VDC and must-release voltage of 4.8VDC. These differences reflect improved operational margins in the substitute part and do not affect compatibility in standard 48VDC coil applications.

Q: Are there differences in contact material between these relays?

A: Yes. The OJ-SS-148HM,000 uses pure silver (Ag) contacts, while the OJ-SS-148HM2,000 uses Silver Tin Oxide (AgSnO) contacts. The AgSnO material in the substitute part provides enhanced resistance to contact erosion and arc damage, extending relay service life in switching applications.

Q: What is the temperature operating range for each part?

A: The OJ-SS-148HM,000 operates from -30°C to 70°C. The OJ-SS-148HM2,000 operates from -40°C to 105°C. The extended range of the substitute part accommodates deployment in more extreme thermal environments while maintaining full electrical performance.

Q: Are both parts RoHS compliant?

A: Yes. Both the OJ-SS-148HM,000 and OJ-SS-148HM2,000 are ROHS3 compliant, meeting current environmental and hazardous substance restrictions for electronic components.

Q: What is the significance of the product status difference?

A: The OJ-SS-148HM,000 is classified as obsolete, indicating discontinued manufacturing and limited remaining inventory. The OJ-SS-148HM2,000 is classified as active, ensuring continued production, availability, and long-term supply chain support for new designs and replacement applications.

Q: Do these relays have identical through-hole mounting footprints?

A: Yes. Both parts use through-hole mounting with PC pin termination, maintaining identical printed circuit board footprints and assembly compatibility.