MRJB112 Equivalent & Substitute Parts

Part Overview

The MRJB112 is a 12-position rotary switch manufactured by TE Connectivity ALCOSWITCH Switches, rated for 0.4VA at 20V AC/DC. This single-pole, 12-throw (SP12T) switch features non-shorting contact timing, gold-plated nickel contacts, and through-hole PC pin termination with epoxy-sealed terminals. The MRJB112 is classified as obsolete, necessitating identification of active equivalent parts to maintain design continuity and ensure component availability for new production and field replacements.

Substiute Parts

MRJB112

TE Connectivity ALCOSWITCH SwitchesIn Stock: 1197MRJB112 Datasheet

Current PartRFQ

MRJB11204

TE Connectivity ALCOSWITCH SwitchesIn Stock: 1067MRJB11204 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete MRJB112 is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part must maintain identical specifications in the following categories:

Electrical Parameters: Number of positions (12), circuit configuration (SP12T), current rating (0.4VA AC/DC), voltage ratings (20V AC and DC), and contact timing (non-shorting BBM).

Mechanical Parameters: Mounting type (through hole), termination style (PC pin), actuator type (screwdriver slot), contact material and finish (nickel with gold plating), angle of throw (30°), and depth behind panel (7.62mm).

Series Designation: Both parts belong to the MRJ series, confirming design family compatibility.

Parts meeting all these criteria are classified as direct functional equivalents and may be substituted without circuit redesign or mechanical modification.

Parameter Comparison

Engineering Selection Recommendations

The MRJB11204 is a direct functional equivalent to the obsolete MRJB112. All electrical and mechanical parameters are identical, including voltage ratings, current capacity, contact configuration, and physical dimensions. Both parts are manufactured by TE Connectivity ALCOSWITCH Switches within the MRJ series.

The MRJB11204 holds active product status, ensuring ongoing availability and manufacturing support. Both parts share identical RoHS non-compliance and ECCN classifications. The MRJB11204 is subject to REACH regulations, whereas the MRJB112 is REACH unaffected; however, this distinction does not affect electrical or mechanical substitution compatibility.

For applications requiring component replacement or new production designs, the MRJB11204 provides full functional equivalence without requiring circuit modification, PCB redesign, or mechanical adjustment.

Frequently Asked Questions (FAQ)

Q: Can the MRJB11204 be used as a direct replacement for the MRJB112 in existing designs?

A: Yes. The MRJB11204 is electrically and mechanically identical to the MRJB112 across all specified parameters. No circuit redesign or PCB modification is required.

Q: What is the primary reason for substituting the MRJB112?

A: The MRJB112 is classified as obsolete. The MRJB11204 is an active product with ongoing manufacturing support and availability.

Q: Are the physical dimensions and mounting characteristics identical?

A: Yes. Both parts feature identical through-hole mounting, PC pin termination, 7.62mm depth behind panel, screwdriver slot actuator, and 30° angle of throw.

Q: Do both parts have the same electrical ratings?

A: Yes. Both the MRJB112 and MRJB11204 are rated for 0.4VA at 20V AC/DC with SP12T circuit configuration and non-shorting contact timing.

Q: What is the difference in REACH status between these parts?

A: The MRJB112 is REACH unaffected, while the MRJB11204 is REACH affected. This regulatory distinction does not impact electrical or mechanical performance and does not prevent substitution.

Q: Are both parts RoHS compliant?

A: No. Both the MRJB112 and MRJB11204 are RoHS non-compliant. If RoHS compliance is required, alternative parts outside this product family must be evaluated.

Q: What contact material and finish are used in both parts?

A: Both parts feature nickel contacts with gold plating, providing identical contact resistance and reliability characteristics.