Q: What type of connectors are these?
A: They are all 1.27mm pitch dual row board-to-board female housing, designed for direct PCB mating.
M25481R：Female on Board Connector | Side Entry | DIP
M25482：Female on Board Connector | SMD | Normal type
M25481：Female on Board Connector | Top Entry | DIP
M25484R：Female on Board Connector | Top Entry SMD with Latches
M25484：Female on Board Connector | Top Entry with Latches
Q: How to select among these female on board connectors?A: Select according to three key factors: mating direction (top entry / side entry), PCB mounting type (DIP / SMD) and whether locking latch is needed.
Q: When to choose side entry type?
A: Pick M25481R if your PCB only allows side mating or has insufficient top installation space.
Q: What is the difference between DIP and SMD versions? A: DIP models suit wave soldering and manual soldering. SMD models fit reflow soldering, save PCB space and support automatic tape-and-reel production.
Q: Do I need a connector with latches? A: Choose M25484 or M25484R with latches for equipment working under vibration or frequent movement, to keep connection stable and anti-loose. For general static use, normal types without latches are sufficient.
Q: What is the pitch of this female housing?
A: It adopts standard 1.27mm dual row pitch, featuring high compatibility with matching pin headers.
Q: What pin counts are available?
A: Customizable pin numbers from 2 pins to 24 pins to meet various PCB layout requirements.
Q: What material is the housing made of?
A: The housing is red PA46 engineering plastic with UL94 V-0 flame retardant rating, excellent in heat resistance and insulation.
Q: What are the electrical ratings?
A: Rated current 1A max and rated voltage 100V AC/DC, ideal for signal transmission.
Q: What is the operating temperature range?
A: It works stably within -40℃ to +105℃, suitable for most industrial and commercial environments.
Q: Do I need wires or cables for connection?
A: No. It is purely for board-to-board connection. Two PCBs connect directly by mating together.
Q: Are the contacts durable?
A: Internal contacts are made of phosphor bronze with tin plating, low contact resistance and good anti-oxidation performance for long service life.
Q: Does it have anti-misinsertion design?
A: Yes. Built-in polarization key prevents reverse mating and assembly errors.
Q: Is this product environmentally compliant?
A: All products fully comply with RoHS standards for global market application.
Q: What soldering process does it support of DIP header?
A: Vertical through-hole DIP design(M25481, M25481R series and M25484 series), compatible with wave soldering and manual soldering.
Q: What soldering process does it support of SMD header?
A: It adopts surface mount design(M25482 series and M25484R series), suitable for reflow soldering. Tape-and-reel packaging is available for automated production.
