MHS133 Equivalent & Substitute Parts

Part Overview

The MHS133 is a slide switch with SP3T (single pole, three throw) configuration manufactured by APEM Inc. It is rated for 300mA DC at 30V and features through-hole mounting with epoxy sealed terminals. The product is currently obsolete, making identification of compatible substitute parts essential for ongoing maintenance, repair, and new design implementations where this switch type is required.

Substiute Parts

MHS133

APEM Inc.In Stock: 886MHS133 Datasheet

Current PartRFQ

1825255-7

TE Connectivity ALCOSWITCH SwitchesIn Stock: 15121825255-7 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MHS133 is based on the following critical parameters that must remain consistent:

Circuit configuration (SP3T) and switch function (On-On-On) establish the electrical topology and are non-negotiable for functional equivalence. Mounting type (through hole) and termination style (PC pin) ensure mechanical and electrical compatibility with existing PCB layouts. Actuator length (4.50mm) and switch travel (2.00mm) must match to maintain proper mechanical engagement and clearance. Operating temperature range (-20°C to 85°C) defines the environmental operating envelope.

Current and voltage ratings establish the maximum electrical load capacity. The MHS133 is rated for 300mA DC at 30V. Substitute parts must support the application's actual current and voltage requirements, which may be lower than the original part's rating. Contact material and finish affect reliability and longevity in the specific application environment.

The TE Connectivity ALCOSWITCH Switches part 1825255-7 qualifies as a substitute based on matching circuit configuration, switch function, actuator dimensions, mounting type, termination style, and operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

The 1825255-7 from TE Connectivity ALCOSWITCH Switches is a functional substitute for the obsolete MHS133. Both parts share identical circuit topology, switch function, actuator dimensions, mounting configuration, and operating temperature range. Both are ROHS3 compliant.

The 1825255-7 offers higher electrical life (15,000 cycles versus 10,000 cycles) and greater operating force (600gf versus 250gf), providing enhanced durability and tactile feedback. The substitute part is currently in active production status, ensuring long-term availability and supply chain stability.

The voltage and current ratings differ between the parts. The MHS133 is rated for 30V DC at 300mA, while the 1825255-7 is rated for 125V AC at 300mA. Selection must be based on the actual application requirements. If the application operates at DC voltages below 30V and currents below 300mA, the 1825255-7 is suitable. If the application requires DC operation above 30V or if AC operation at 125V is needed, the 1825255-7 accommodates these requirements.

Frequently Asked Questions (FAQ)

Q: Can the 1825255-7 directly replace the MHS133 in existing designs?

A: Yes, from a mechanical and electrical topology perspective. Both parts have identical SP3T configuration, 4.50mm actuator length, 2.00mm switch travel, through-hole mounting, and PC pin termination. Verify that your application's actual voltage and current requirements fall within the 1825255-7's ratings.

Q: What is the difference in operating force between these parts?

A: The MHS133 has an operating force of 250gf, while the 1825255-7 requires 600gf. This means the 1825255-7 requires greater manual force to actuate. Evaluate whether this difference affects user experience or mechanical integration in your application.

Q: Why do the voltage and current ratings differ?

A: The MHS133 is specified for 30V DC at 300mA, while the 1825255-7 is specified for 125V AC at 300mA. These represent the maximum rated values for each part under their respective operating conditions. Your application's actual voltage and current determine which part is appropriate.

Q: Are both parts RoHS compliant?

A: Yes, both the MHS133 and 1825255-7 are ROHS3 compliant, meeting environmental and hazardous substance restrictions.

Q: What is the difference in electrical life?

A: The MHS133 is rated for 10,000 electrical cycles, while the 1825255-7 is rated for 15,000 cycles. The 1825255-7 offers 50% greater cycle life, which may extend the operational lifespan in high-cycle applications.

Q: Is the 1825255-7 currently available?

A: Yes, the 1825255-7 is in active production status, ensuring availability and supply chain continuity, unlike the obsolete MHS133.