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M2015LL1G01 Toggle Switch SPDT Equivalent & Substitute Parts
Part Overview
The M2015LL1G01 is a panel-mount toggle switch manufactured by NKK Switches, featuring Single Pole Double Throw (SPDT) configuration with 0.4VA rated capacity at 28V. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system maintenance and new design implementations. The switch employs a locking lever actuator with solder lug termination and epoxy-sealed terminals for environmental protection.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Circuit Configuration | SPDT (Single Pole Double Throw) |
| Switch Function | On-Momentary |
| Current Rating | 0.4VA (AC/DC) |
| Voltage Rating - AC | 28V |
| Voltage Rating - DC | 28V |
| Mounting Type | Panel Mount |
| Actuator Type | Locking Lever |
| Termination Style | Solder Lug |
| Panel Cutout Diameter | 6.50mm Circular |
| Bushing Thread | 1/4-40 |
| Operating Temperature Range | -30°C to 85°C |
| Electrical Life | 50,000 Cycles |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitution eligibility for the M2015LL1G01 is determined by strict alignment across the following critical parameters:
Mandatory Matching Parameters:
- Circuit configuration (SPDT)
- Switch function (On-Momentary)
- Current rating (0.4VA AC/DC minimum)
- Mounting type (Panel Mount)
- Actuator type (Locking Lever)
- Termination style (Solder Lug)
- Bushing thread specification (1/4-40)
- Operating temperature range compatibility (-30°C to 85°C)
Allowable Variance Parameters:
- Voltage rating: Substitute must meet or exceed the original 28V specification
- Panel cutout diameter: Minor dimensional tolerance acceptable within mechanical assembly constraints
- Actuator length: Functional equivalence maintained within standard mechanical tolerances
- Electrical life: Substitute must meet or exceed 50,000 cycles minimum
The C&K 7108K2ZBE qualifies as a functional substitute based on matching circuit, function, current rating, mounting configuration, and termination style. However, the voltage rating differential (20V vs. 28V) represents a critical design consideration requiring application-level verification.
Parameter Comparison
| Parameter | M2015LL1G01 (NKK) | 7108K2ZBE (C&K) | Compatibility Status |
|---|---|---|---|
| Manufacturer | NKK Switches | C&K | Different |
| Circuit Configuration | SPDT | SPDT | Match |
| Switch Function | On-Momentary | On-Momentary | Match |
| Current Rating | 0.4VA (AC/DC) | 0.4VA (AC/DC) | Match |
| Voltage Rating - AC | 28V | 20V | Variance |
| Voltage Rating - DC | 28V | 20V | Variance |
| Mounting Type | Panel Mount | Panel Mount | Match |
| Actuator Type | Locking Lever | Locking Lever | Match |
| Actuator Length | 16.50mm | 17.88mm | Minor Variance |
| Termination Style | Solder Lug | Solder Lug | Match |
| Panel Cutout Diameter | 6.50mm Circular | 6.35mm Circular | Minor Variance |
| Bushing Thread | 1/4-40 | 1/4-40 | Match |
| Operating Temperature | -30°C to 85°C | -30°C to 85°C | Match |
| Electrical Life | 50,000 Cycles | 40,000 Cycles | Variance |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Match |
| Product Status | Obsolete | Active | Substitute Available |
Engineering Selection Recommendations
The C&K 7108K2ZBE presents a viable substitute for the obsolete M2015LL1G01 based on functional equivalence in circuit topology, current handling, and mechanical interface specifications. Both components maintain ROHS3 compliance and identical operating temperature ranges.
Critical Design Consideration: The substitute part carries a reduced voltage rating (20V vs. 28V). Applications operating at or near the original 28V specification require circuit-level analysis to confirm operation within the substitute's voltage envelope. Systems operating below 20V present no voltage-related constraints.
Secondary Consideration: The C&K substitute exhibits 40,000 electrical life cycles versus the original 50,000 cycles. Applications with defined cycle-count requirements must account for this 20% reduction in rated electrical life.
Compliance Status: The C&K 7108K2ZBE maintains active product status with ROHS3 compliance and REACH affected designation, ensuring continued availability and regulatory alignment for new designs and production continuity.
Frequently Asked Questions (FAQ)
Q: Can the C&K 7108K2ZBE directly replace the M2015LL1G01 in all applications?
A: Direct substitution is possible for applications operating at voltages of 20V or below. Applications requiring the full 28V specification must evaluate circuit operating conditions to confirm compatibility with the substitute's 20V rating.
Q: What is the significance of the panel cutout diameter difference (6.50mm vs. 6.35mm)?
A: The 0.15mm difference falls within standard mechanical tolerances for panel-mount switch installations. Existing panel cutouts designed for the M2015LL1G01 will accommodate the C&K substitute without modification.
Q: Does the actuator length variance (16.50mm vs. 17.88mm) affect mechanical fit?
A: The 1.38mm difference represents a minor variance within typical mechanical assembly tolerances. Panel depth and actuator clearance must be verified for the specific application, but standard panel-mount configurations typically accommodate this variance.
Q: Why does the C&K substitute have lower electrical life (40,000 vs. 50,000 cycles)?
A: This represents a design characteristic difference between manufacturers. Applications with defined cycle-count specifications must confirm that 40,000 cycles meets operational requirements.
Q: Are both parts RoHS compliant?
A: Yes. Both the M2015LL1G01 and C&K 7108K2ZBE maintain ROHS3 compliance, ensuring regulatory alignment for applications subject to RoHS requirements.
Q: What is the difference between REACH Unaffected and REACH Affected status?
A: REACH Unaffected indicates the original part is not subject to REACH substance restrictions. REACH Affected indicates the substitute may contain substances subject to REACH regulations but remains compliant. Both designations indicate regulatory compliance for their respective jurisdictions.
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