Electronic systems continue to become smaller, lighter, and more efficient, increasing the demand for compact and dependable interconnect solutions. The JST B2B-ZR-3.4(LF)(SN) is a popular wire-to-board connector header designed for applications requiring secure connections in limited PCB space. As part of JST's widely used ZH Series, this connector provides a combination of miniature size, reliable mating performance, and long-term durability for modern electronic designs.
Engineers, OEMs, contract manufacturers, and repair technicians frequently choose the B2B-ZR-3.4(LF)(SN) when developing compact consumer electronics, industrial controls, instrumentation equipment, and embedded systems where space savings and connection reliability are critical.
Overview of the JST B2B-ZR-3.4(LF)(SN)
The B2B-ZR-3.4(LF)(SN) is a through-hole, vertical male header connector belonging to the JST ZH connector family. It features a compact 1.5 mm pitch design with two positions, making it ideal for low-current signal and power applications in densely populated circuit boards. The connector is engineered to provide dependable wire-to-board connections while maintaining a small footprint.
Key characteristics include:
- Manufacturer: JST
- Series: ZH Series
- Connector Type: Header, Male Pins
- Number of Positions: 2
- Pitch: 1.5 mm
- Mounting Style: Through Hole
- Contact Material: Brass
- Contact Finish: Tin
- Voltage Rating: 50 VAC/DC
- Current Rating: 1 Amp
- Operating Temperature Range: -25°C to +85°C
- RoHS Compliant Construction
These specifications make the connector suitable for a wide range of electronic applications requiring dependable low-power interconnections.
Why Engineers Choose JST ZH Series Connectors
The JST ZH Series has become one of the industry's most trusted miniature connector families. Designers select ZH connectors because they provide a balance of compact size, secure mating retention, and straightforward assembly processes.
Benefits of the B2B-ZR-3.4(LF)(SN) include:
Compact Design
With a pitch of only 1.5 mm, the connector enables significant PCB space savings compared to larger connector systems. This allows engineers to design smaller products without sacrificing connectivity.
Reliable Connection Performance
The connector utilizes a shrouded housing and detent locking mechanism to help prevent accidental disconnection during operation, transportation, or vibration.
Through-Hole Mounting Strength
Through-hole termination provides excellent mechanical stability, making the connector well suited for applications subject to handling stress or repeated mating cycles.
RoHS Compliance
Modern electronics manufacturers increasingly require environmentally compliant components. The B2B-ZR-3.4(LF)(SN) meets RoHS requirements, supporting global manufacturing initiatives.
Common Applications
The JST B2B-ZR-3.4(LF)(SN) is commonly found in:
Consumer Electronics
Compact devices such as portable electronics, handheld instruments, smart appliances, and wearable technologies frequently utilize miniature wire-to-board connectors to maximize internal space efficiency.
Industrial Automation
Industrial controllers, sensors, monitoring equipment, and communication modules often require dependable connectors capable of maintaining secure electrical connections over extended operating periods.
Medical Devices
Many portable medical instruments and diagnostic systems incorporate miniature connectors where reliability and compact design are essential.
Embedded Systems
Single-board computers, IoT devices, development platforms, and custom embedded electronics frequently use JST ZH connectors for internal wiring and subsystem connections.
Test and Measurement Equipment
Laboratory instruments and testing systems benefit from the connector's secure mating characteristics and compact dimensions.
Connector Construction and Materials
The B2B-ZR-3.4(LF)(SN) uses brass contacts with tin plating, helping provide consistent electrical performance while maintaining cost-effective manufacturing. The housing utilizes reinforced polyamide material with UL94V-0 flame-retardant characteristics, supporting reliability and safety requirements in demanding environments.
This construction helps protect against mechanical wear while maintaining stable electrical contact over the connector's service life.
Mating Components and System Design
When designing with the JST ZH Series, engineers typically pair the B2B-ZR-3.4(LF)(SN) board header with compatible ZH series housings and crimp terminals to create complete wire-to-board interconnect systems. Industry discussions frequently reference ZH-series mating components when developing compact electronic assemblies.
Proper connector selection should consider:
- Current requirements
- Voltage requirements
- Environmental conditions
- Mating cycle expectations
- PCB layout constraints
- Wire gauge compatibility
Careful consideration of these factors helps maximize long-term reliability and performance.
Sourcing JST B2B-ZR-3.4(LF)(SN) Connectors
As demand for miniature connectors continues to grow, purchasing teams increasingly seek reliable sources for genuine JST components. Supply chain visibility, inventory availability, and lifecycle management are important considerations when sourcing interconnect products for production environments.
DistyParts provides access to a broad range of electronic components, including rectangular connectors, headers, and male pin configurations used throughout the electronics industry.
Browse available inventory and related products here:
Rectangular Connectors – Headers, Male Pins
Conclusion
The JST B2B-ZR-3.4(LF)(SN) remains a trusted solution for designers seeking a compact, dependable, and industry-proven wire-to-board connector. Its 1.5 mm pitch, through-hole construction, 2-position configuration, and RoHS-compliant design make it suitable for a wide variety of electronic products ranging from consumer devices to industrial automation equipment.
For engineers and procurement professionals searching for quality rectangular connectors and male pin headers, the extensive selection available through DistyParts provides a valuable resource for identifying compatible components and sourcing solutions for current and future electronic designs.
