M43 - 8 Relay Outputs (Product Discontinued)

The mezzanine card M43 is a relay output M-Module for free potential switching of eight signals. It is designed for industrial process I/O applications.

The relays implemented guarantee highest reliability and long life.

The M43 is based on the M-Module ANSI mezzanine standard. It can be used as an I/O extension in any type of bus system, i.e. CPCI, VME or on any type of stand-alone SBC. Appropriate M-Module carrier cards in 3U, 6U and other formats are available from MEN or other manufacturers.


  • 8 relay outputs
  • 1 A switching power per relay
  • One throw-over contact per relay
  • Output voltage range max. 48 V
  • No separate supply voltage


Relay Outputs
  • 8 outputs as throw-over contacts
  • NO (normally open), NC (normally closed) and common contacts
  • Maximum switching voltage: 48V
  • Maximum switching current: 3A
  • Maximum operation current: 1A
  • Maximum switching power: 60W
Switching Time
2ms typ. for NO and NC
  • Relay status can be read out - "read-modify-write" accesses possible
  • Low heat development by use of CMOS components
Peripheral Connections
  • Via front panel on a shielded 25-pin D-Sub receptacle connector
  • Via carrier board (rear I/O)
M-Module Characteristics
A08, D08, IDENT
Electrical Specifications
  • Supply voltage/power consumption: +5V (-3%/+5%), 700mA typ. (all relays active)
  • MTBF: 1,000,000h @ 50°C (derived from MIL-HDBK-217F)
Mechanical Specifications
  • Dimensions: conforming to M-Module Standard
  • Weight: 98g
Environmental Specifications
  • Temperature range (operation):
    • 0..+60°C
    • Industrial temperature range on request
    • Airflow: min. 10m³/h
  • Temperature range (storage): -40..+85°C
  • Relative humidity range (operation): max. 95% non-condensing
  • Relative humidity range (storage): max. 95% non-condensing
  • Altitude: -300m to + 3,000m
  • Shock: 15g/11ms
  • Bump: 10g/16ms
  • Vibration (sinusoidal): 2g/10..150Hz
  • Conformal coating on request
PCB manufactured with a flammability rating of 94V-0 by UL recognized manufacturers
Tested according to EN 55022 (radio disturbance), IEC 61000-4-2 (ESD) and IEC 61000-4-4 (burst)
Software Support