Pushbutton Switches Push Button, DPDT, 5.4 mm Push, Straight Terminal, White Cap, TH
Research Notes
1. What this is
MPB04-2C54-S-CAP-WT-D is a Same Sky (formerly CUI Devices) MPB-series miniature pushbutton.
2. Part-number decode
- Series: Same Sky MPB
- Type: pushbutton
3. Compatibility & ordering
Same Sky (formerly CUI Devices) makes tactile switches, panel pushbuttons (many IP67-sealed and illuminated), and encoders for OEM electronics. Match by type (tactile / panel pushbutton / encoder), action (momentary vs alternate), illumination, sealing (IP rating), and mounting, then use the Same Sky datasheet to confirm the exact colour, termination, and force encoded in the part number.
4. Data-quality note
The Same Sky (CUI) product line/type is identified; the detailed configuration is left to the datasheet rather than guessed. Flagged decoded-partial.
5. Sources
- Same Sky (formerly CUI Devices) product catalog (samesky.com)
- Distributor listing (DigiKey / Mouser) — search the exact part number
1 source
- Same Sky (CUI) — MPB04-2C54-S-CAP-WT-D — samesky.com
Thông số kỹ thuật
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Device class
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pushbutton
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Enriched by
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samesky-decoder-2026-08-12
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Lead time
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77 Days
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Manufacturer series
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MPB
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Mouser part number
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490-MPB042C54SCAPWTD
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Pn status
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decoded-partial
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Rohs status
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RoHS Compliant
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Series description
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Same Sky (formerly CUI Devices) MPB-series miniature/momentary pushbutton switch
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Hướng Dẫn Cài Đặt Nhanh
Panel cutout: 22mm. Insert from the front of the panel, secure with mounting nut from behind (tighten to 2-3 Nm).
Contact block: Snap or screw the contact block onto the rear of the button body. Ensure the contact block orientation matches the wiring diagram — NO terminals are usually marked.
Wiring: Use 0.5-2.5mm² stranded wire with ferrules. Tighten screw terminals to 0.8 Nm. Test the button function before energizing the circuit.
Kích thước
Khắc phục sự cố
Button doesn't respond when pressed
Check the contact block first — it's the most common failure point. Test continuity across the NO or NC terminals with a multimeter. If no click is felt, the return spring in the head may be broken.
Works intermittently
Contact block contacts are pitted or burned. Replace the contact block — don't try to file the contacts. Check if the rated cycle count has been exceeded.
Button feels mushy or doesn't click
The spring return mechanism in the button head is worn. Replace the head. The contact block can usually be reused if it tests OK.
Thông số kỹ thuật nhanh
- Device class
- pushbutton
- Enriched by
- samesky-decoder-2026-08-12
- Lead time
- 77 Days
- Manufacturer series
- MPB
- Mouser part number
- 490-MPB042C54SCAPWTD
