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Hirose Electric Co Ltd DF40TC(4.0)-50DS-0.4V(51) — Board-to-Board Connectors

Hirose DF40TC(4.0)-50DS-0.4V(51) – 0.40 mm Pitch, 50-Pin

MPNDF40TC(4.0)-50DS-0.4V(51)
Active

Hirose DF40 series receptacle, center strip contacts, 50 positions, 2 rows, 0.016" (0.40 mm) pitch, 0.154" (3.90 mm) height above board, mated stacking height 4 mm, gold contact finish, Pick and Place feature, SMT, Tape & Reel packaging.

$1.6400Ref. price · indicative, final on quote
Hirose Electric Co Ltd DF40TC(4.0)-50DS-0.4V(51) datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DF40TC(4.0)-50DS-0.4V(51) specifications
ParameterValue
SeriesDF40
MountingSurface Mount
Connector typeReceptacle, Center Strip Contacts
Height above board0.154\" (3.90mm)
Mated stacking heights4mm
Pitch0.016\" (0.40mm)
FeaturesPick and Place
PackageTape & Reel (TR) Cut Tape (CT)
ManufacturerHirose Electric Co Ltd
Contact finishGold
Rows2
Positions50
Contact finish thickness1.97µin (0.050µm)

Product details

50 positions at 0.40 mm pitch – board-stacking selection

The DF40TC(4.0)-50DS-0.4V(51): The 0.40 mm pitch packs 50 circuits into a narrow footprint, which demands careful trace escape and via fan-out on the PCB – a 4-layer board is typical for routing the inner rows.

4 mm stack height – what it buys the layout

The height above board is 3.90 mm, meaning the receptacle body stands just under the 4 mm stack target. The 0.40 mm pitch drives the board footprint – the contact pads are spaced tightly, so the PCB layout must match the Hirose recommended land pattern to avoid solder bridging during reflow.

Pick and Place compatibility for SMT assembly

This is standard for high-volume SMT lines – the tape-and-reel packaging (Cut Tape and Tape & Reel options) feeds directly into the pick-and-place machine without manual handling. The gold contact finish at 1.97 µinch thickness provides a corrosion-resistant mating surface for signal-level currents.

Frequently asked questions

What is the stacking height of DF40TC(4.0)-50DS-0.4V(51)?

The mated stacking height is 4 mm.

Is DF40TC(4.0)-50DS-0.4V(51) compatible with pick-and-place assembly?

Yes, the connector includes a Pick and Place feature, and it is supplied in Tape & Reel packaging for automated SMT placement.

What is the part status of DF40TC(4.0)-50DS-0.4V(51) – is it active or obsolete?

The part is active and in production. No successor or cross-reference is listed; the DF40 series includes multiple stack height variants – confirm the 4 mm height matches your design.