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Hirose Electric Co Ltd BM24-40DS/2-0.35V(53) — Mezzanine & Stacking Connectors
Hirose Electric Co Ltd

Hirose BM24-40DS/2-0.35V(53) Socket, 0.35mm Pitch, 42 Pos

MPNBM24-40DS/2-0.35V(53)
Active

Hirose BM24 series socket, center strip contacts, 42 positions (40 + 2 power), 0.014" (0.35mm) pitch, dual-row, 0.031" (0.80mm) height above board, surface mount, gold contact finish, solder retention.

$1.4500Ref. price · indicative, final on quote
BM24-40DS/2-0.35V(53) datasheet
StockContact for availability
Lead timeIn Stock wk
MOQ1 pcs
  • New & original stockTraceable channels only — no mixed lots, no re-taped reels.
  • Factory packaging where availableSealed reels, trays and bags; cut quantities always stated on the quote.
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Specifications

BM24-40DS/2-0.35V(53) Technical Specifications
ParameterValue
SeriesBM24
MountingSurface Mount
Connector typeSocket, Center Strip Contacts
Height above board0.031\" (0.80mm)
Mated stacking heights0.8mm
Pitch0.014\" (0.35mm)
PackageTape & Reel (TR) Cut Tape (CT)
FeaturesSolder Retention
Contact finishGold
Rows2
Positions42 (40 + 2 Power)

Product details

The Hirose BM24-40DS/2-0.35V(53) is a 42-position socket with center strip contacts from the BM24 series — a mezzanine board-to-board interconnect family built for dense, low-profile stacking.

Position Count — 40 Signal Plus 2 Power

The 42 positions break down as 40 signal contacts plus 2 power contacts.

This socket mates with the BM24-40DP/2-0.35V(53) header, which carries outer shroud contacts and a 0.026" (0.65mm) height. The combined mated stack height is 0.8mm — the header sits lower, and the socket's 0.031" (0.80mm) profile sets the total z-height between boards. The 0.35mm pitch means the header and socket must align within a tight tolerance during board assembly; the solder retention pads on both halves help keep the parts registered through reflow.

Frequently asked questions

What is the equivalent part for BM24-40DS/2-0.35V(53)?

There is no direct second-source equivalent. The BM24 series is proprietary to Hirose. The closest functional alternative within the same series is the BM24-30DS/2-0.35V(53) with 32 positions (30 + 2 power) at the same 0.35mm pitch and 0.80mm stack height — but that changes the circuit count, so it only works if your BOM can accommodate fewer signal lines.

Where can I buy BM24-40DS/2-0.35V(53)?

This part is sourced to order against your BOM quantity.