D-Shaped Connectors - Centronics

Image Part Number Description / PDF Quantity Rfq
DF02R050NA3

DF02R050NA3

JAE Electronics

CONN RCPT 50POS R/A SOLDER

0

FX2C-100P-1.27DSA(71)

FX2C-100P-1.27DSA(71)

Hirose

CONN HEADER VERT 100POS 1.27MM

404

FX2-60S-1.27DS(71)

FX2-60S-1.27DS(71)

Hirose

CONN RECEPT R/A 60POS 1.27MM

4

10136-52B2PC

10136-52B2PC

3M

CONN PLUG 36POS R/A SOLDER

0

DX40-50P(55)

DX40-50P(55)

Hirose

CONN PLUG 50POS

80

5175472-7

5175472-7

TE Connectivity AMP Connectors

CONN BTB HD PLUG 60POS R/A SLDR

0

12226-8250-00FR

12226-8250-00FR

3M

CONN RCPT 26POS R/A SOLDER

0

DH60-17P

DH60-17P

Hirose

CONN SCSI RCPT 17POS R/A SOLDER

104

2129260-2

2129260-2

TE Connectivity AMP Connectors

CONN RCPT 40POS R/A SOLDER

818

FX2B-68PA-1.27DS(71)

FX2B-68PA-1.27DS(71)

Hirose

CONN HEADER R/A 68POS 1.27MM

170

N10226-5212PC

N10226-5212PC

3M

CONN RCPT 26POS R/A SOLDER

155

5554923-1

5554923-1

TE Connectivity AMP Connectors

CONN RCPT 24POS R/A SOLDER

400

FX2-20P-0.635SH(71)

FX2-20P-0.635SH(71)

Hirose

CONN PLUG 20POS R/A SOLDER

468

FX2B-32PA-1.27DS(71)

FX2B-32PA-1.27DS(71)

Hirose

CONN HEADER R/A 32POS 1.27MM

60

5175473-3

5175473-3

TE Connectivity AMP Connectors

CONN BTB HD PLUG 30P VERT SOLDER

0

10136-5212PC

10136-5212PC

3M

CONN PLUG 36POS R/A SOLDER

687

DX10BM-100S(50)

DX10BM-100S(50)

Hirose

CONN MINI HD RCPT 100P R/A SLDR

0

1734101-5

1734101-5

TE Connectivity AMP Connectors

CONN BTB RCPT 50POS VERT SOLDER

2383

3-5179275-8

3-5179275-8

TE Connectivity AMP Connectors

CONN BTB PLUG 68POS R/A SOLDER

800

5552744-7

5552744-7

TE Connectivity AMP Connectors

CONN RCPT 64POS 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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