TEL-381-643065-2

Technical Dossier

Product Details And Specifications

TEL 381-643065 Series Technical Notes

Q: How are RFQ terms confirmed?
A: Quantity, required condition, documentation needs, destination and sourcing route are confirmed during RFQ review before quotation.

The Evolution of 381-643065 Architecture

The 381-643065 series was introduced as part of TEL's modular control philosophy in the late 1990s, designed to replace discrete wiring harnesses with standardized plug-in scan modules. Early revisions (suffix -1 through -3) used parallel bus communication with TTL-level logic, compatible with TEL's first-generation VME-based controllers. Mid-generation revisions (-5, -6, -11, -12) introduced optically isolated inputs, improved EMI shielding, and support for thermocouple types K, J, and R — expanding deployment into high-temperature diffusion and oxidation furnaces. Later W-suffix variants (W1–W8) transitioned to a serial scan protocol, reducing backplane wiring complexity and enabling faster polling rates (up to 500 scans/sec). Compatibility between parallel-bus and serial-bus variants requires an adapter board (TEL P/N 3D80-000xxx series); direct substitution without the adapter will result in communication faults. As of 2024, TEL has officially discontinued new production of all 381-643065 variants, placing the entire series in end-of-life (EOL) status. Lifecycle extension support is now exclusively available through authorized third-party spare parts distributors.

381-643065 Full Catalog & Functionalities (SKU List)

The following SKUs represent the documented production variants of the TEL 381-643065 series, classified by functional role:

Sensor Input / Scan Modules

• 381-643065-1: 8-channel analog scan module, parallel bus, TTL logic, thermocouple type K input.
• 381-643065-2: 8-channel analog scan module, parallel bus, enhanced noise filtering, thermocouple type K/J.
• 381-643065-3: 16-channel analog scan module, parallel bus, extended input range, thermocouple type K/J/R.
• 381-643065-5: 8-channel optically isolated scan module, parallel bus, improved EMI shielding, thermocouple type K.
• 381-643065-6: 16-channel optically isolated scan module, parallel bus, dual-bank input switching, thermocouple type K/J.

Advanced Scan / Serial Protocol Modules

• 381-643065-11: 8-channel scan module, serial protocol, 250 scans/sec, thermocouple type K/J/R/T.
• 381-643065-12: 16-channel scan module, serial protocol, 500 scans/sec, thermocouple type K/J/R/T/S/B.
• 381-643065-W1: W-series 8-channel serial scan, low-profile housing, thermocouple type K, DIN-rail mount.
• 381-643065-W2: W-series 16-channel serial scan, thermocouple type K/J, rack-mount bracket included.
• 381-643065-W3: W-series 8-channel serial scan, RTD (Pt100) input, 4-wire measurement, ±0.1°C accuracy.
• 381-643065-W4: W-series 16-channel serial scan, RTD (Pt100/Pt1000) input, dual-range selection.
• 381-643065-W5: W-series 8-channel serial scan, 4–20mA current loop input, process variable monitoring.
• 381-643065-W6: W-series 16-channel serial scan, 4–20mA current loop input, HART-compatible signal path.
• 381-643065-W7: W-series 8-channel serial scan, mixed input (thermocouple + RTD), configurable per channel.
• 381-643065-W8: W-series 16-channel serial scan, mixed input (thermocouple + 4–20mA), high-density backplane connector.

Sourcing Hard-to-Find & Obsolete 381-643065 Parts

Q: How is condition confirmed before quotation?
A: Available condition, photos, test records and documentation are checked according to the requested model and sourcing channel before a formal RFQ response.