D-Shaped Connectors - Centronics

Image Part Number Description / PDF Quantity Rfq
5787775-1

5787775-1

TE Connectivity AMP Connectors

CONN STCK PLUG 68/68POS STR IDC

431

552314-1

552314-1

TE Connectivity AMP Connectors

CONN RCPT 36POS STR IDC

273

FX2BA-80SA-1.27R

FX2BA-80SA-1.27R

Hirose

CONN SOCKET 80POS 1.27MM (4PCS)

340

3-5175475-8

3-5175475-8

TE Connectivity AMP Connectors

CONN BTB HD RCPT 68P VERT SOLDER

1249

1734044-2

1734044-2

TE Connectivity AMP Connectors

CENTRONICS,RCPT 37P,R/A,PB

0

FX2CA2-60P-1.27DSA(71)

FX2CA2-60P-1.27DSA(71)

Hirose

CONN HEADER VERT 60POS 1.27MM

0

FX2C2-120P-1.27DSAL(71)

FX2C2-120P-1.27DSAL(71)

Hirose

CONN HDR 120POS 1.27MM

0

FX2-52P-1.27SVL(71)

FX2-52P-1.27SVL(71)

Hirose

CONN PLUG 52POS SMD SOLDER

0

102A0-6212PC

102A0-6212PC

3M

CONN RCPT 100POS PCB SOLDER

89

FX2BM-60SA-1.27R

FX2BM-60SA-1.27R

Hirose

CONN RECEPT 60POS 1.27MM

0

FX2BA-20SA-1.27R

FX2BA-20SA-1.27R

Hirose

CONN SOCKET 20POS 1.27MM (4PCS)

188

787535-4

787535-4

TE Connectivity AMP Connectors

CONN BTB SCSI RCPT 80P R/A SLDR

0

1-1734101-4

1-1734101-4

TE Connectivity AMP Connectors

CONN BTB RCPT 160POS VERT SOLDER

0

DH60A-17P

DH60A-17P

Hirose

CONN SCSI RCPT 17POS R/A SOLDER

0

FX2C2-120S-1.27DSAL(71)

FX2C2-120S-1.27DSAL(71)

Hirose

CONN RECEPT 120POS 1.27MM

0

112-014-213R001

112-014-213R001

NorComp

CONN SCSI RCPT 14POS R/A SOLDER

174

2129261-1

2129261-1

TE Connectivity AMP Connectors

CONN PLUG 40POS SMD T/H SOLDER

314

10236-2210PE

10236-2210PE

3M

CONN RCPT 36POS SMD SOLDER

0

FX2C-68S-1.27DSA(71)

FX2C-68S-1.27DSA(71)

Hirose

CONN RECEPT VERT 68POS 1.27MM

96

FX2B-60PA-1.27DSAL(71)

FX2B-60PA-1.27DSAL(71)

Hirose

CONN HEADER RA 60POS 1.27MM

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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