A22-TB-10M

1. Overview

The Omron A22-TB-10M is a 22mm non-illuminated pushbutton from Omron's A22 series of cylindrical (φ22/φ25) industrial pushbuttons. It features a round projecting (extended) actuator in black, momentary self-resetting operation, and a single normally-open (SPST-NO) contact block. In the part number, "T" = projecting actuator, "B" = black, "10M" = 1NO momentary. The A22 series spans flush, projecting, guard, square, and mushroom head styles in multiple colors. The datasheet dates to 1998; the part is now confirmed obsolete/discontinued at all major distributors, with the A22N series as Omron's current successor.

2. User Sentiment

No user forum reviews or community sentiment data were found in crawled sources. Distributor copy describes the A22-TB-10M as "reliable, safe, and cost-effective" with easy installation and high resistance to environmental elements (Allicdata). No complaints or comparisons to competing products appear in the available content. Radwell International and EU Automation stock it as a legacy industrial part with 2-year and 12-month warranties respectively.

3. Real-World Applications

Used in industrial machine control panels, factory automation pilot devices, and hydraulic/pneumatic control stations (Airline Hydraulics stocks it). EnrgTech UK lists domestic uses: calculators, push-button phones, kitchen appliances, and magnetic locks. Omron classifies it as a "pilot device." Appears in Japanese FA distributor catalogs (Aperza, Monotaro, MISUMI). Suitable anywhere a 22mm panel cutout, IP65-rated momentary black pushbutton is needed.

4. Technical Specifications

• Type: Non-illuminated, projecting round actuator, black, A22 series
• Contact Configuration: SPST-NO (1NO, 1 Form A)
• Switch Function: Momentary (off-momentary, self-resetting)
• Current Rating: 10A AC/DC
• Voltage Rating: 110V AC / 24V DC rated; derated to 6A/220VAC, 2A/440VAC, 0.6A/220VDC
• Panel Cutout: 22.3mm dia (25mm with optional ring adapter)
• Mounting: Panel mount, front; screw terminals
• IP Rating: IP65 — dust-tight, oil-resistant, splash-proof
• Mechanical Life: 5,000,000 cycles
• Electrical Life: 500,000 cycles
• Operating Temp: -20°C to +70°C
• Actuator Dia: 29.7mm; body depth ~54.7mm
• Certifications: UL, CUL, CCC; RoHS compliant
• Part Status: Obsolete (confirmed DigiKey all regions, MFGChips Japan)

5. Ordering & Compatibility

DigiKey PN A22-TB-10M-ND is no longer available at all DigiKey regional sites (US, UK, DE, IN, TH, TW, HK, SG, ES). Spot inventory remains at independent distributors: ~5,890 pcs at Components-Store.jp, ~5,695 at Micro-Semiconductor. Pricing: $10–$13 (historical, seekic.com), $18.71+ (LCSC), $52 single-unit (JLCPCB), Rp 98,370 in Indonesia (SELC). Related variants: A22-TB-10A (screw-latch), A22-TB-10SM (surface mount), A22-TB-01M (1NC), A22-TB-11M (DPST). Color siblings: A22-TG-10M (green), A22-TR-10M (red), A22-TY-10M (yellow), A22-TW-10M (white). Successor: A22N series. Contact blocks are modular; DPST-NO/DPST-NC units not compatible with all A22 heads (polycarbonate switch box restriction).

6. Known Issues

Primary issue is obsolescence: discontinued at DigiKey globally, zero stock at major authorized distributors. Buyers should plan migration to A22N series. Naming risk: EU Automation mistakenly lists this part under "ABB" brand — it is exclusively Omron-manufactured. Search results for "A22" may return Samsung Galaxy A22 smartphone content (unrelated). No functional or reliability defects reported in available sources.