The Leuze IS 208MM/4NO-1E5-S12 (Part Number: 50109641) is a high-precision miniature non-contact inductive proximity switch belonging to Leuze electronic's Series 208 (Germany). Combining an ultra-compact M8 threaded metal sleeve with an industry-standard M12 connector termination, this sensor provides exceptional space efficiency, high sensitivity, and dependable performance in tightly confined machine automation environments.

KEY PRODUCT FEATURES AND OPERATIONAL ADVANTAGES:
1. Ultra-Compact Miniature M8 Housing – Extreme Space Optimization:
With an ultra-slim M8x1 mm threaded profile, it easily integrates directly into compact robotic end-effectors, miniature slide tables, semiconductor tooling blocks, and test fixtures where standard larger sensors cannot fit.
2. Flush / Embedded Installation Design (-1E5):
Offers a nominal sensing range Sn of 1.5 mm (assured operating range Sa: 0 to 1.2 mm). The magnetically shielded barrel allows full flush mounting into metallic surrounding surfaces, shielding the active sensing face from accidental physical impact.
3. Ultra-High 5,000 Hz (5 kHz) Switching Frequency:
Features an exceptional switching rate of 5,000 operations per second, making it ideally suited for high-speed gear tooth counting, miniature spindle rotation tracking, indexing wheels, and high-frequency pulse generation without missing a cycle.
4. High Mechanical Rigidity & 900-Year MTTF Reliability:
Constructed with a heavy-duty metallic barrel and a wear-resistant Polyamide (PA 12) sensing cap resistant to industrial lubricants and machine coolants. High positional repeatability (< 5%) and minimal temperature drift guarantee continuous 24/7 industrial operation with an outstanding 900-year MTTF rating.
5. Standard Industrial M12 Connector (-S12):
Features a standard 4-pin M12 male connector (A-coded) at the rear, allowing direct connection with widely available industrial M12 sensor cables, eliminating internal wire breakage and enabling fast plug-and-play maintenance.
6. Complete Electronic Protection & High-Visibility Status LED:
Equipped with built-in output short-circuit protection, reverse power polarity protection, and inductive transient suppression. A bright yellow status LED at the rear delivers clear visual confirmation of switching output states during alignment and diagnostics.

TYPICAL INDUSTRIAL APPLICATIONS:
• Electronics & SMT Semiconductor Manufacturing: Leadframe positioning, micro-component verification, and high-speed pick-and-place robot arm monitoring.
• CNC Machining & Precision Tooling: Home position referencing, miniature slide table end-of-travel sensing, and automatic tool clamp/unclamp verification.
• Watchmaking & Medical Equipment Automation: Micro-gear tooth detection, fine spring verification, and precision metal component inspection.
• High-Speed Packaging & Sorting: High-speed metal bottle cap counting, locating pin verification, and index pulse tracking.

• Manufacturer: Leuze electronic
• Part Number / Model: IS 208MM/4NO-1E5-S12
• Order Number (Part no.): 50109641
• Series: Series 208 (Miniature Cylindrical M8)
• Brand Origin: Germany
• Sensor Type: Inductive proximity switch
• Housing Design: Miniature cylindrical threaded
• Dimensions (Diameter x Length): Ø 8 mm x 60 mm
• Thread Size: M8 x 1 mm
• Installation Type: Embedded / Flush mounting
• Nominal Operating Range Limit (Sn): 1.5 mm
• Assured Operating Range (Sa): 0 ... 1.2 mm
• Standard Target Plate: 8 x 8 mm², Fe360 steel
• Material Correction Factors:
  - Fe360 Steel: 1.0
  - Stainless Steel: 0.7
  - Brass: 0.45
  - Aluminum: 0.35
  - Copper: 0.3
• Switching Hysteresis: 10 %
• Repeatability: Max. 5 % (at Ta = 23 °C ± 5 °C)
• Temperature Drift: Max. 10 % (over entire operating span)
• Max. Switching Frequency: 5,000 Hz (5 kHz)
• Readiness Delay: 32 ms
• Supply Voltage (UB): 10 ... 30 V DC (Residual ripple 0 ... 20%)
• Open-Circuit Current: 0 ... 10 mA
• Digital Switching Outputs: 1 output
• Switching Element: Transistor PNP
• Switching Principle: NO (Normally Open)
• Max. Switching Current: 200 mA
• Voltage Drop: ≤ 2 V DC
• Residual Current: Max. 0.1 mA
• Protective Circuitry: Polarity reversal protection, short-circuit protection, inductive kickback protection
• Status Indicator: 1 yellow LED indicating switching output state
• Connection Type: Integrated M12 connector, 4-pin male (A-coded)
• Housing Material: Metal / Precision-machined Stainless Steel
• Sensing Face Material: Polyamide (PA 12)
• Net Weight: 25 g
• Degree of Protection: IP 67 (Water and dust tight)
• Protection Class: Class III
• Reliability (MTTF): 900 years
• Ambient Operating Temperature: -25 °C ... +70 °C
• Storage Temperature: -25 °C ... +70 °C
• EMC Standards: IEC 61000-4-2, IEC 61000-4-3, IEC 61000-4-4
• Product Standards & Approvals: IEC 60947-5-2, cULus Listed