Terminal Blocks - Headers, Plugs and Sockets

Image Part Number Description / PDF Quantity Rfq
OSTOQ123251

OSTOQ123251

On-Shore Technology, Inc.

TERM BLOCK HDR 12POS 3.81MM

931

OSTOQ107151

OSTOQ107151

On-Shore Technology, Inc.

TERM BLOCK HDR 10POS 90DEG 5MM

0

EDZ950/6

EDZ950/6

On-Shore Technology, Inc.

TERM BLOCK PLUG 6POS STR 5.08MM

6414

EDSTL130/23

EDSTL130/23

On-Shore Technology, Inc.

TERM BLOCK HDR 23POS VERT 5MM

0

EDZ1100/10

EDZ1100/10

On-Shore Technology, Inc.

TERM BLOCK PLUG 10POS 5.08MM

0

EDSTLZ956/2

EDSTLZ956/2

On-Shore Technology, Inc.

TERM BLOCK HDR 2POS VERT 5.08MM

25

EDSTL950/2

EDSTL950/2

On-Shore Technology, Inc.

TERM BLOCK HDR 2POS 90DEG 5MM

6650

EDSTLZ951/8

EDSTLZ951/8

On-Shore Technology, Inc.

TERM BLOCK HDR 8POS 90DEG 5.08MM

0

OSTOQ075451

OSTOQ075451

On-Shore Technology, Inc.

TERM BLOCK HDR 7POS 90DEG 5.08MM

150

OSTTS08515B

OSTTS08515B

On-Shore Technology, Inc.

TERM BLOCK PLUG 8POS 5.08MM

196

EDSTL130/24

EDSTL130/24

On-Shore Technology, Inc.

TERM BLOCK HDR 24POS VERT 5MM

2677

EDSTLZ950/9

EDSTLZ950/9

On-Shore Technology, Inc.

TERM BLOCK HDR 9POS 90DEG 5.08MM

232

ED951/5

ED951/5

On-Shore Technology, Inc.

TERM BLOCK PLUG 5POS STR 5MM

0

OSTOQ043250

OSTOQ043250

On-Shore Technology, Inc.

TERM BLOCK HDR 4POS VERT 3.81MM

9962

EDSTLZ1550/10

EDSTLZ1550/10

On-Shore Technology, Inc.

TERM BLOCK HDR 10POS 3.81MM

482

OSTTJ097150

OSTTJ097150

On-Shore Technology, Inc.

TERM BLOCK PLUG 9POS STR 5MM

0

ED1110/4

ED1110/4

On-Shore Technology, Inc.

TERM BLOCK PLUG 4POS 270DEG 5MM

0

EDSTLZ960/7

EDSTLZ960/7

On-Shore Technology, Inc.

TERM BLOCK HDR 7POS 90DEG 7.62MM

0

OSTTJ037150

OSTTJ037150

On-Shore Technology, Inc.

TERM BLOCK PLUG 3POS STR 5MM

3487

EDSTL950/10

EDSTL950/10

On-Shore Technology, Inc.

TERM BLOCK HDR 10POS 90DEG 5MM

0

Terminal Blocks - Headers, Plugs and Sockets

1. Overview

Terminal blocks, headers, plugs, and sockets are essential components in electrical and electronic systems for establishing reliable connections between circuits. These devices enable signal transmission, power distribution, and system modularity. Their standardized designs ensure interoperability, scalability, and ease of maintenance in complex systems.

2. Main Types and Functional Classification

Type Functional Characteristics Application Examples
Terminal Blocks Screw/clamp-based connections for high current/ voltage Industrial control panels, power distribution units
PCB Headers Pin/grid arrays for board-to-board connections Embedded systems, Arduino shields
RJ Connectors Modular jacks for data/telecom signals Ethernet networks (RJ45), telephone systems (RJ11)
D-Sub Connectors Multi-pin trapezoidal shells for analog/digital signals Legacy serial interfaces, industrial sensors
USB Connectors Hot-pluggable interfaces for power/data Consumer electronics, peripheral devices

3. Structure and Components

Typical structures include:

  • Insulating housing (PA66, PBT, or LCP plastics)
  • Contact elements (phosphor bronze, beryllium copper)
  • Plating materials (gold, tin, nickel for corrosion resistance)
  • Actuation mechanisms (screws, spring clamps, or friction fits)
  • EMI shielding layers (for high-frequency applications)

4. Key Technical Specifications

Parameter Importance
Current Rating (A) Determines power handling capacity
Voltage Rating (V) Defines dielectric strength requirements
Contact Resistance (m ) Impacts signal integrity and power loss
Insertion Loss (dB) Critical for high-speed data transmission
Mating Cycles Indicates mechanical durability
Operating Temperature (- C to + C) Defines environmental tolerance

5. Application Fields

Primary industries include:

  • Industrial automation (PLCs, HMIs)
  • Telecommunications (5G base stations, routers)
  • Consumer electronics (smartphones, wearables)
  • Medical equipment (imaging devices, patient monitors)
  • Automotive (EV charging systems, ADAS)

6. Leading Manufacturers and Products

Manufacturer Representative Product
Phoenix Contact COMBICON series terminal blocks
TE Connectivity MICRO MATCH connectors
Molex SL Series headers
Amphenol D-Subminiature connectors
Samtec QTE high-speed socket systems

7. Selection Guidelines

Key considerations:

  • Electrical requirements (current/voltage levels)
  • Mechanical constraints (space, vibration)
  • Environmental factors (temperature, humidity)
  • Signal integrity needs (frequency, noise rejection)
  • Cost vs. reliability trade-offs
  • Compliance with standards (IPC, IEC, UL)

8. Industry Trends

Emerging developments include:

  • Miniaturization for wearable devices
  • High-speed connectors for 5G/6G ( 25 Gbps)
  • Hybrid connectors integrating power/data
  • Eco-friendly materials (halogen-free, RoHS compliant)
  • Smart connectors with built-in sensors
  • Automotive-grade connectors for EVs

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