MSS1300 Equivalent & Substitute Parts

Part Overview

The MSS1300 is a slide switch manufactured by TE Connectivity ALCOSWITCH Switches, configured as a single-pole triple-throw (SP3T) switch with a 300mA AC current rating at 125V. This component features through-hole mounting with PC pin termination and epoxy sealed terminals for environmental protection. The MSS1300 is classified as obsolete, necessitating identification of active equivalent parts to maintain design continuity and ensure ongoing component availability for production and repair applications.

Key Parameters

Parameter	Value
Circuit Configuration	SP3T (Single-Pole Triple-Throw)
Current Rating	300mA AC
Voltage Rating	125V AC
Contact Timing	Shorting (MBB - Make-Before-Break)
Switch Function	On-On-On
Mounting Type	Through Hole
Termination Style	PC Pin
Actuator Length	3.80mm
Switch Travel	2.00mm
Operating Temperature Range	-20°C to 85°C
Mechanical Life	15,000 Cycles
Electrical Life	15,000 Cycles

Substitute Part Grouping Explanation

Substitution of the obsolete MSS1300 is based on electrical and mechanical parameter equivalence within the TE Connectivity ALCOSWITCH Switches product line. The substitute part must satisfy the following criteria:

Electrical Parameters:

Circuit configuration: SP3T
Current rating: 300mA AC minimum
Voltage rating: 125V AC minimum
Contact timing: Shorting (MBB)
Switch function: On-On-On

Mechanical Parameters:

Mounting type: Through Hole
Termination style: PC Pin
Actuator length: 3.80mm
Switch travel: 2.00mm
Operating temperature range: -20°C to 85°C minimum
Mechanical life: 15,000 cycles minimum
Electrical life: 15,000 cycles minimum

Parts meeting these specifications are classified as direct functional equivalents and may be substituted without circuit redesign or PCB layout modification.

Parameter Comparison

Parameter	MSS1300 (Obsolete)	1825259-1 (Active)	Match Status
Manufacturer	TE Connectivity ALCOSWITCH Switches	TE Connectivity ALCOSWITCH Switches	Identical
Series	MSS	MSS	Identical
Circuit Configuration	SP3T	SP3T	Identical
Current Rating (AC)	300mA	300mA	Identical
Voltage Rating (AC)	125V	125V	Identical
Contact Timing	Shorting (MBB)	Shorting (MBB)	Identical
Switch Function	On-On-On	On-On-On	Identical
Actuator Type	Standard	Standard	Identical
Actuator Length	3.80mm	3.80mm	Identical
Contact Material	Copper Alloy	Copper Alloy	Identical
Contact Finish	Silver	Silver	Identical
Mounting Type	Through Hole	Through Hole	Identical
Termination Style	PC Pin	PC Pin	Identical
Features	Epoxy Sealed Terminals	Epoxy Sealed Terminals	Identical
Operating Temperature	-20°C to 85°C	-20°C to 85°C	Identical
Actuator Material	Polyoxymethylene (Acetal) (POM)	Polyoxymethylene (Acetal) (POM)	Identical
Switch Travel	2.00mm	2.00mm	Identical
Mechanical Life	15,000 Cycles	15,000 Cycles	Identical
Electrical Life	15,000 Cycles	15,000 Cycles	Identical
Operating Force	600gf	600gf	Identical
Product Status	Obsolete	Active	Substitute is active
ECCN	EAR99	EAR99	Identical
HTSUS	8536.50.9050	8536.50.9050	Identical

Engineering Selection Recommendations

The part 1825259-1 is a direct functional equivalent to the obsolete MSS1300. All electrical parameters, mechanical dimensions, and operational characteristics are identical. The substitute part carries active product status from TE Connectivity ALCOSWITCH Switches, ensuring ongoing availability and supply chain continuity.

The MSS1300 and 1825259-1 share identical export classification (ECCN: EAR99) and tariff codes (HTSUS: 8536.50.9050), indicating no change in regulatory or trade compliance requirements for component substitution.

No circuit modifications, PCB layout changes, or design alterations are required when replacing MSS1300 components with 1825259-1 units. The parts are pin-compatible and functionally interchangeable in all applications where the MSS1300 was originally specified.

Frequently Asked Questions (FAQ)

Q: Can the 1825259-1 be used as a direct replacement for the MSS1300 without PCB modifications?

A: Yes. The 1825259-1 is electrically and mechanically identical to the MSS1300. Both parts feature identical through-hole PC pin termination, actuator dimensions (3.80mm length, 2.00mm travel), and electrical ratings (300mA AC at 125V). No PCB layout changes are required.

Q: What is the primary reason for substituting the MSS1300?

A: The MSS1300 is classified as obsolete. The 1825259-1 is an active product from the same manufacturer and product series, providing assured long-term component availability.

Q: Are there any differences in operating temperature range between these parts?

A: No. Both the MSS1300 and 1825259-1 operate across the identical temperature range of -20°C to 85°C.

Q: Do these parts have the same mechanical life rating?

A: Yes. Both parts are rated for 15,000 mechanical cycles and 15,000 electrical cycles.

Q: Are there any compliance or certification differences between the MSS1300 and 1825259-1?

A: Both parts share identical export classification (ECCN: EAR99) and tariff codes (HTSUS: 8536.50.9050). No compliance changes result from this substitution.

Q: What is the contact material and finish for both parts?

A: Both the MSS1300 and 1825259-1 feature copper alloy contacts with silver finish, providing identical electrical performance and reliability characteristics.

Q: Is the actuator material the same for both parts?

A: Yes. Both parts use polyoxymethylene (acetal) (POM) for the actuator, ensuring identical mechanical feel and durability.

Q: What is the operating force required for both switches?

A: Both the MSS1300 and 1825259-1 require 600gf (gram-force) operating force.

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