The DIN 41612 Vertical Female Type Half B Connector with 32 Positions is a compact, high-reliability Eurocard receptacle designed for backplane and motherboard applications where full-size 64-pin B-type connectors are not required. This connector fully complies with the DIN 41612 / IEC 60603-2 standard, which defines the mechanical and electrical specifications for two-part connectors used in 19-inch Eurocard racking systems and industrial backplane architectures. The "Type Half B" (also referred to as "1/2 B" or "Style B/2") designation indicates a variant of the standard B-type connector that occupies half the length of a full B-type footprint. While a standard full B-type connector features 2 rows of 64 positions (32 per row), the Half B version provides 2 rows of 32 positions (16 contacts per row, or an alternating pattern across the two rows). As a Female (Receptacle/Socket) connector, this component features female contacts that receive male pins from a corresponding Half B plug connector mounted on a daughter card or mating board. The Vertical (Straight/180°) orientation means the connector is mounted perpendicular to the PCB surface, with the mating interface facing upward, making it ideal for backplane applications where daughter cards are inserted vertically.
The Type Half B female connector features a 32-position contact arrangement across two rows (rows a and b), with a standard 2.54mm (0.100") pitch between contacts. This configuration provides 32 signal lines per connector while occupying only half the PCB space of a full 64-pin B-type connector. The reduced footprint makes the Half B connector ideal for applications where board space is at a premium or where fewer signal connections are required, while still maintaining compatibility with the B-type connector family. The specific contact loading pattern varies by manufacturer. HARTING uses an alternating pattern: Row a occupies odd positions (1, 3, 5 … 29, 31) and Row b occupies even positions (2, 4, 6 … 30, 32). Other manufacturers such as CONEC may offer a straight pattern with rows a and b fully populated across positions 1 through 16. The female contacts are typically tuning fork or blade-style receptacles, designed to provide reliable, low-resistance contact with the male pins while accommodating multiple insertion and extraction cycles. The connector housing is molded from high-temperature thermoplastic (PBT or polyester) with glass fiber reinforcement, rated UL94 V-0 for flame retardancy, providing excellent mechanical strength, dimensional stability, and heat resistance during wave soldering or reflow processes. The connector also features polarization and coding options to prevent incorrect mating, and optional mounting flanges are available on certain models for additional mechanical retention to the PCB.
The DIN 41612 Vertical Female Type Half B 32-Position connector delivers robust electrical performance suitable for demanding industrial and telecommunications applications. Electrical characteristics typically include a current rating of 2.0 Amps per contact (with derating at elevated temperatures), a test voltage rating of 1000V AC for one minute, a contact resistance of 20mΩ maximum, and an insulation resistance of 1000MΩ minimum (or greater than 10¹² Ω, depending on the manufacturer). The operating temperature range spans from -55°C to +125°C, ensuring reliable performance in harsh industrial environments, outdoor telecom cabinets, and automotive applications. The female contacts are fabricated from copper alloy (typically phosphor bronze) with gold plating over a nickel underplating on the mating area, providing low contact resistance, corrosion resistance, and durability through 400 mating cycles (Class 2) or 50 cycles (Class 3) , depending on the performance level selected. The termination area (solder pins) is typically tin-plated for optimal solderability during wave soldering or reflow processes. Termination options include THT/solder, press-fit (for solderless, high-reliability backplane assembly), and wire wrap (for prototyping or customized applications). Typical insertion force for the 32-position connector is 30 N maximum, with a withdrawal force of 20 N maximum.
The DIN 41612 Vertical Female Type Half B 32-Position connector is widely deployed in applications requiring compact, reliable backplane interconnects with fewer signal lines than a full 64-pin B-type connector. Primary application areas include industrial control systems (smaller PLC modules, I/O interfaces, industrial computers), telecommunications equipment (subrack backplanes, line cards, transmission equipment), test and measurement instruments, medical electronics (portable or compact diagnostic devices), railway and transportation systems, and embedded computing platforms where board space is limited. Major manufacturers of this connector type include HARTING (DIN-Signal B032 series, part numbers 09022326825, 09022326895), ANTENK (DFS Half B series), Oupiin (9001-36321C00A), Dubilier (DBCDINM32BAB1S3), and CONEC (122A10019X series). In summary, the DIN 41612 Vertical Female Type Half B 32-Position connector is a compact, industry-standard interconnect solution that combines DIN 41612 compliance with a space-saving 2-row, 32-pin configuration. Its wide temperature range, high current capacity, proven reliability, and multiple termination options make it an ideal choice for backplane and motherboard applications requiring standardized Eurocard connectors in space-constrained industrial, telecom, and embedded systems.
