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SWW239CD7 Equivalent & Substitute Parts Engineering Reference
Part Overview
The SWW239CD7 from APEM Inc. is a toggle switch featuring a single pole double throw (SPDT) configuration, supporting a current rating of 0.4VA at 20V (AC/DC), with a right-angle, through-hole, vertical mounting design. It offers a mechanical electrical life of 50,000 cycles and includes a standard round actuator of 7.50mm length, made from brass and nickel-plated. This part is in active production status. Alternative models are required when sourcing flexibility or second-sourcing options are critical due to inventory needs or changes in part lifecycle status.
Substiute Parts
Key Parameters
| Parameter | SWW239CD7 |
|---|---|
| Manufacturer | APEM Inc. |
| Switch Function | On-Off-On |
| Circuit | SPDT |
| Current Rating (Amps) | 0.4VA (AC/DC) |
| Voltage Rating - AC | 20 V |
| Voltage Rating - DC | 20 V |
| Mounting Type | Through Hole, Right Angle, Vertical |
| Actuator Type | Standard Round |
| Actuator Length | 7.50mm |
| Termination Style | PC Pin |
| Features | Sealed |
| Operating Temperature | -20°C ~ 85°C |
| Actuator Material | Brass, Nickel Plated |
| Electrical Life | 50,000 Cycles |
| RoHS Status | ROHS3 Compliant |
| MSL | 1 (Unlimited) |
| REACH Status | REACH Unaffected |
| Part Status | Active |
Substitute Part Grouping Explanation
Substitution for toggle switches in this category strictly considers:
- Switch function (On-Off-On)
- Circuit configuration (SPDT)
- Electrical ratings (0.4VA at 20 V AC/DC)
- Mounting style (Through Hole, Right Angle, Vertical)
- Actuator type (Standard Round)
- Actuator length (approximate matching)
- Termination style (PC Pin)
- Mechanical life and operating temperature (same or broader)
- RoHS/REACH environmental compliance status and product status (Active/Obsolete).
Only parts that match these critical electrical and mechanical specifications are listed as direct substitutes.
Parameter Comparison
| Parameter | SWW239CD7 (APEM Inc.) |
7103MD9AV2BE (C&K) |
1825137-5 (TE Connectivity) |
|---|---|---|---|
| Switch Function | On-Off-On | On-Off-On | On-Off-On |
| Circuit | SPDT | SPDT | SPDT |
| Current Rating (Amps) | 0.4VA (AC/DC) | 0.4VA (AC/DC) | 0.4VA (AC/DC) |
| Voltage Rating - AC | 20 V | 20 V | 20 V |
| Voltage Rating - DC | 20 V | 20 V | 20 V |
| Mounting Type | Through Hole, Right Angle, Vertical | Through Hole, Right Angle, Vertical | Through Hole, Right Angle, Vertical |
| Actuator Type | Standard Round | Standard Round | Standard Round |
| Actuator Length | 7.50mm | 6.86mm | 6.86mm |
| Termination Style | PC Pin | PC Pin | PC Pin |
| Features | Sealed | Epoxy Sealed Terminals | Epoxy Sealed Terminals |
| Operating Temperature | -20°C ~ 85°C | -30°C ~ 85°C | -30°C ~ 85°C |
| Actuator Material | Brass, Nickel Plated | Brass, Chrome Plated | Brass, Nickel Plated |
| Electrical Life | 50,000 Cycles | 40,000 Cycles | 6,000 Cycles |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Not applicable |
| MSL | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
| REACH Status | REACH Unaffected | REACH Affected | REACH Affected |
| Part Status | Active | Active | Obsolete |
Engineering Selection Recommendations
Selection between SWW239CD7, 7103MD9AV2BE, and 1825137-5 should consider part status and compliance profiles. SWW239CD7 and 7103MD9AV2BE are active products and ROHS3 compliant. 1825137-5 is classified as obsolete and does not have RoHS compliance. Both alternate parts have identical electrical ratings and mounting configurations, with minor mechanical differences. Environmental compliance and product lifecycle status are key considerations for direct replacement in regulated or new designs.
Frequently Asked Questions (FAQ)
Q1: What criteria determine if toggle switches are equivalent or substitutable?
Equivalent toggle switches must match SPDT configuration, switch function (On-Off-On), current and voltage ratings (0.4VA, 20V AC/DC), mounting style (through hole, right angle, vertical), actuator type, termination style, and relevant compliance requirements.
Q2: Are actuator material and length critical for substitution in this category?
Actuator length and material should closely match the original to ensure mechanical fit and long-term operation in the intended application.
Q3: How does product status affect substitute selection?
Active status parts are preferred for ongoing production. Obsolete status restricts suitability to repair or legacy uses.
Q4: Why is RoHS compliance mentioned in this comparison?
RoHS compliance is essential for use in environments where hazardous substances are regulated. Selection must align with project regulatory requirements.
Q5: Is there a difference in operating temperature range among these switches?
Operating temperature ranges are identical or broader in substitutes compared to SWW239CD7, ensuring suitability for equivalent environmental conditions.
Q6: Can differences in cycle life or features like sealing affect substitute suitability?
Cycle life and features such as sealing should meet or exceed original part requirements to maintain reliability in the application, as specified in the provided parameters.
Q7: Is packaging type a consideration in substitution for these parts?
Packaging (bulk, tray) is not an electrical or mechanical compatibility factor but may affect assembly logistics.
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