D-Shaped Connectors - Centronics

Image Part Number Description / PDF Quantity Rfq
10140-6000EC

10140-6000EC

3M

CONN PLUG 40POS STR IDC

3008

DX30AM-26P

DX30AM-26P

Hirose

CONN MINI HD PLUG 26POS STR IDC

0

DH60-27P

DH60-27P

Hirose

CONN SCSI RCPT 27POS R/A SOLDER

14

554088-1

554088-1

TE Connectivity AMP Connectors

CONN RCPT 24POS PNL MNT IDC

465

FX2-32S-1.27SV(71)

FX2-32S-1.27SV(71)

Hirose

CONN RCPT 32POS SMD SOLDER

32

FX2-60P-0.635SH(71)

FX2-60P-0.635SH(71)

Hirose

CONN PLUG 60POS R/A SOLDER

0

5552725-1

5552725-1

TE Connectivity AMP Connectors

CONN RCPT 50POS R/A SOLDER

622

DF02R026NA3

DF02R026NA3

JAE Electronics

CONN RCPT 26POS R/A SOLDER

0

557984-1

557984-1

TE Connectivity AMP Connectors

CONN RCPT 50POS VERT PRESS-FIT

159

FX2CA-80S-1.27DSAL(71)

FX2CA-80S-1.27DSAL(71)

Hirose

CONN RECEPT 80POS 1.27MM

0

6339447-9

6339447-9

TE Connectivity AMP Connectors

CONN RCPT 50POS R/A SOLDER

0

FX2CA2-52S-1.27DSAL(71)

FX2CA2-52S-1.27DSAL(71)

Hirose

CONN RECEPT 52POS 1.27MM

0

5175472-8

5175472-8

TE Connectivity AMP Connectors

CONN BTB HD PLUG 68POS R/A SLDR

0

FX2CA2-60S-1.27DSAL(71)

FX2CA2-60S-1.27DSAL(71)

Hirose

CONN SOCKET VERT 60POS 1.27MM

8

10240-1S10PE

10240-1S10PE

3M

CONN RCPT 40POS R/A SOLDER

0

5552403-1

5552403-1

TE Connectivity AMP Connectors

CONN RCPT 50POS R/A IDC

309

10150-8000EE

10150-8000EE

3M

CONN PLUG 50POS STR IDC

313

552303-1

552303-1

TE Connectivity AMP Connectors

CONN PLUG 64POS STR IDC

418

5229912-1

5229912-1

TE Connectivity AMP Connectors

CONN PLUG 50POS STR IDC

174

DX10HM-20SE(50)

DX10HM-20SE(50)

Hirose

CONN MINI HD RCPT 20P R/A SOLDER

0

D-Shaped Connectors - Centronics

1. Overview

D-Shaped connectors, named for their distinctive trapezoidal metal shield, are widely used in computing and industrial applications. The Centronics interface, a subset of D-shaped connectors, was originally developed by Centronics Data Computer Corp. for parallel printing. These connectors enable robust electrical and mechanical connections, playing a critical role in legacy systems and specialized industrial equipment despite the rise of USB and wireless technologies.

2. Main Types and Functional Classification

TypeFunctional FeaturesApplication Examples
Standard Centronics36-pin configuration, unshielded, 5A max currentLegacy inkjet/dot matrix printers
High-Density Centronics50-pin configuration, improved EMI shieldingIndustrial automation systems
Locking CentronicsThreaded screws for vibration resistanceMedical imaging equipment

3. Structure and Composition

Centronics connectors feature: - Metal shell (zinc alloy or aluminum) for EMI protection - Insulating housing (high-temperature nylon) - Contact pins (phosphor bronze with gold plating) - Screw locking mechanism (optional) The standard 36-pin design includes 20 signal pins and 16 ground pins, arranged in staggered rows to prevent misalignment.

4. Key Technical Specifications

ParameterValue/RangeImportance
Pin Count24-50 pinsDetermines data transmission capacity
Current Rating1-10A per pinDefines power handling capability
Contact Resistance 10m Ensures signal integrity
Dielectric Strength1000VAC rmsPrevents electrical breakdown
Operating Temperature-40 C to +85 CGuarantees performance stability

5. Application Fields

Major industries include: - Office equipment (printers, scanners) - Industrial automation (CNC machines, PLCs) - Medical devices (diagnostic equipment) - Legacy military systems - Test & measurement instruments

6. Leading Manufacturers and Products

ManufacturerRepresentative Products
AmphenolCentronics 36-8051 Series
Molex50-87-1360 High-Density Connector
TE ConnectivityDuraCon Centronics 24

7. Selection Guidelines

Key considerations: - Match pin count and spacing (0.05"-0.1" pitch) - Choose appropriate current rating with 20% safety margin - Select locking mechanism type (standard screws vs. quick-release) - Confirm environmental ratings (IP40 minimum for industrial) - Verify compatibility with existing cabling infrastructure

8. Industry Trends

Current trends include: - Transition to hybrid connectors supporting USB-C and Ethernet - Development of miniaturized D-sub variants (e.g., Micro-Centronics) - Increased adoption of gold-plated contacts for high-reliability applications - Phasing out in consumer electronics, but stable demand in industrial sectors - Integration with PoE (Power over Ethernet) systems for combined data/power delivery

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