BM20 0.4 mm Pitch Board-to-Board/Board-to-FPC

Hirose offers their BM20 series connectors

The BM20 series from Hirose Electric is a 0.4 mm contact pitch Board-to-Board/Board-to-FPC connector with a stack height of 0.8 mm. There is no restriction on pattern design, as the thin molding technology maintains the effective mating length of 0.2 mm while achieving complete insulation between the bottom side of the connector and the board.

The BM20 series has a mating self-alignment of 0.3 mm which is secured by the guide ribs. It has a shock-absorbing configuration with a dimple on the contact for connector robustness. This series is RoHS compliant and Halogen-free and is available in positions 10, 20, 24, 34, and 40.

Features and Benefits
  • Current capacity of 0.3 A
  • 30 VAC voltage rating
  • Board-to-Board/Board-to-FPC connector
  • 2.3 mm depth
  • Clear tactile click when mated


Manufacturer Part Number Description Available Quantity Datasheets
BM20B(0.8)-10DP-0.4V(53) CONN HDR 10POS 0.4MM SMD 1570
BM20B(0.8)-10DS-0.4V(53) CONN RECEPT 10POS 0.4MM SMD 2000
BM20B(0.8)-20DP-0.4V(53) CONN HDR 20POS 0.4MM SMD 2870
BM20B(0.8)-20DS-0.4V(53) CONN RECEPT 20POS 0.4MM SMD 1865
BM20B(0.8)-24DP-0.4V(53) CONN HDR 24POS 0.4MM SMD 1970
BM20B(0.8)-24DS-0.4V(53) CONN RECEPT 24POS 0.4MM SMD 1970
BM20B(0.8)-30DP-0.4V(53) CONN HDR 30POS 0.4MM SMD 2400
BM20B(0.8)-30DS-0.4V(53) CONN RECEPT 30POS 0.4MM SMD 2480
BM20B(0.8)-34DP-0.4V(53) CONN HDR 34POS 0.4MM SMD 1992
BM20B(0.8)-34DS-0.4V(53) CONN RECEPT 34POS 0.4MM SMD 1306
BM20B(0.8)-40DP-0.4V(53) CONN HDR 40POS 0.4MM SMD 1360
BM20B(0.8)-40DS-0.4V(53) CONN RECEPT 40POS 0.4MM SMD 1860