Description

LEMO Series — Product Overview & Selection Guide

(Independent-site style — accurate, concise, and citation-backed)

LEMO’s portfolio is built around the patented Push-Pull self-latching system and a modular family concept: different series target different environments (indoor instrumentation, watertight outdoor use, extreme shock/vibration, medical sterilisable plastics, underwater/high-pressure, etc.). Below is a clear, non-technical summary of the main series you asked about (B, K, T, S, F, P/REDEL, E, W), what each one is for, and practical selection/compatibility notes. All major claims are tied to manufacturer / distributor sources. lemo.com+2lemo.com+2

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Quick selection guidance (one-line)

• B Series — iconic indoor push-pull family for instrumentation, AV, medical; many hybrid contact options. lemo.com

• K Series — watertight/outdoor variant of B (gaskets/O-rings) for harsher environments. lemo.com+1

• T Series — miniature, IP68 outdoor push-pull; compatible with some B sockets; compact watertight option. lemo.com

• S Series — the original standard push-pull with stepped inserts for blind-mating (indoor/protected use). lemo.com

• F Series — ruggedized push-pull for high shock/vibration and harsh applications (IP67 class options). lemo.com+1

• P / REDEL P Series — plastic, sterilizable push-pull family designed for medical uses (lightweight, color/key coding). lemo.com

• E Series — watertight (IP68) stepped-insert family; broad contact options and compatibility with S inserts. lemo.com

• W Series — specialty high-pressure / underwater connectors designed for deep immersion (oil & gas, marine). lemo.com

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Detailed, accurate short descriptions

B Series — Instrumentation & Hybrid Systems

The B Series is LEMO’s iconic indoor, modular range: push-pull self-latching, multiple shell sizes, high-density and hybrid insert options (coax, fibre, HV, thermocouple, etc.). It’s a go-to for test & measurement, medical devices, and broadcast where quick, secure mating and EMI shielding matter. lemo.com+1

K Series — Watertight Outdoor Variant of B

K is effectively the watertight/outdoor adaptation of the B family: added gaskets and O-rings for IP-rated protection, built for extended outdoors use and harsher environmental exposure while keeping the same push-pull ergonomics. Use K where a B won’t tolerate ingress. lemo.com+1

T Series — Miniature IP68 for Exposed Applications

T Series provides a compact, IP68-rated solution for outdoor or exposed installations. It’s designed to be watertight when mated and is intended for situations needing a smaller footprint but full environmental sealing. Some T models are designed to be compatible with B sockets/holes for retrofit flexibility — always confirm the exact parts/datasheets. lemo.com+1

S Series — Original Push-Pull Stepped Insert (Indoor)

The S Series is the original LEMO Push-Pull connector with stepped inserts to aid alignment and blind-mating. It’s field-proven across many indoor applications (A/V, lab instruments, medical) and supports a wide variety of contact types and densities. Use S when you need the classic LEMO form-factor in protected environments. lemo.com+1

F Series — Ruggedized Push-Pull for High Shock & Vibration

F Series is LEMO’s purpose-built rugged push-pull line: compact, lightweight, with materials and latching designed for high shock/vibration environments (defense, motorsport, aerospace). It includes IP-rated variants and specialized material options for extreme mechanical demands. Check the data sheet for material and contact options per model. lemo.com+1

P / REDEL P Series — Medical-Grade Plastic Connectors

The REDEL P family (LEMO’s plastic line) targets medical and sterilizable applications: high contact density in plastic housings, color/key coding and sterilisation-friendly materials. Ideal where metal shells are undesirable (weight or sterilisation). lemo.com

E Series — Watertight Stepped Insert (IP68)

The E Series offers an IP68 watertight version of the stepped-insert system and is explicitly referenced as compatible with S-series inserts in many configurations. It covers a broad range of contact types (from LV to HV, coax, hybrid) and is suited for rugged outdoor, oil & gas, and naval applications. lemo.com+1

W Series — High-Pressure / Underwater Connectors

The W Series is specialized for hydrostatic pressure environments — designed for long immersion and rated for substantial depths/pressures (used in marine, oil & gas, subsea instrumentation). It’s a niche product for underwater deployments where standard IP68 isn’t sufficient. lemo.com+1

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Practical selection & compatibility notes (must-know)

1. Mechanical family vs. environmental variant: many series are relatives — e.g., K is a watertight evolution of B; E provides IP68 variants compatible with S inserts. But always confirm part-level compatibility in datasheets before mating connectors. lemo.com+1

2. Electrical & contact layout matters: even if two series look mechanically similar, contact type, pin count, pin layout, current rating and shielding can differ — don’t assume electrical compatibility.

3. Materials & treatment: F series offers specialized material codes for extreme shock; P/REDEL uses sterilizable plastics — pick by application (mechanical stress vs sterilisation). web.lemo.com+1

4. IP / immersion differences: IP68 (E, T) covers watertight mated connectors for many uses; W series is engineered for true high hydrostatic pressure/underwater use — they’re not interchangeable without checking pressure ratings. lemo.com+1

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How we recommend you proceed (practical)

• If you need indoor instrumentation/medical/broadcast → start with B or S. lemo.com+1

• If you need watertight outdoor → consider K, E, or T (verify IP and cable diameter). lemo.com+1

• If you need extreme shock/vibration or lightweight rugged → evaluate F (check material codes). lemo.com

• If you need sterilisable medical plastics → REDEL P is the dedicated option. lemo.com

• If you need subsea/high-pressure → contact LEMO for W series pressure ratings and compatibility. lemo.com

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Want a product-level comparison table or datasheet links?

I can generate a compact comparison table (shell sizes, typical IP rating, typical contact types, typical applications) or fetch direct datasheets for each series so you can validate specific temperature/current/mating cycle figures. Tell me which format you prefer (table, one-page PDF, or per-series datasheet links) and I’ll produce it.