DEM09S500M D-Sub 9 Position Receptacle Equivalent & Substitute Parts

Part Overview

The DEM09S500M is a 9 position D-Sub receptacle connector manufactured by Amphenol ICC (FCI) in the DM HE501 series. This through-hole, right-angle solder termination connector features female sockets with gold-plated phosphor bronze contacts rated for 7.5A per contact at 300V. The connector is actively produced and maintains 1118 units in current inventory. Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing, inventory availability, or compliance with specific regulatory standards.

Substiute Parts

DEM09S500M

Amphenol ICC (FCI)In Stock: 1173DEM09S500M Datasheet

Current PartRFQ

5745438-1

TE Connectivity AMP ConnectorsIn Stock: 8215745438-1 Datasheet

MFR RecommendedRFQ

5745438-4

TE Connectivity AMP ConnectorsIn Stock: 16385745438-4 Datasheet

MFR RecommendedRFQ

L77SDE09SA4CH

Amphenol ICC (Commercial Products)In Stock: 1247L77SDE09SA4CH Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DEM09S500M is determined by the following critical parameters: connector type (D-Sub receptacle, female sockets), number of positions (9), shell size (1/DE/E), mounting configuration (through-hole, right-angle), and termination method (solder). All identified substitutes maintain these core mechanical and electrical interfaces.

The substitute parts are grouped into two categories based on electrical performance and compliance characteristics:

Category 1: TE Connectivity AMPLIMITE HDP-20 Series (5745438-1, 5745438-4) These substitutes maintain full mechanical compatibility and D-Sub 9-position receptacle configuration. Electrical ratings differ: current capacity is 6A per contact (versus 7.5A) and voltage rating is 125V (versus 300V). Operating temperature range is -55°C to 105°C. RoHS compliance status varies between parts. Packaging differs between tray and bulk options.

Category 2: Amphenol ICC SD Series (L77SDE09SA4CH) This substitute maintains mechanical compatibility and D-Sub 9-position receptacle configuration with identical operating temperature range (-55°C to 125°C). Current rating is 3A per contact and voltage rating is 250V. Backset spacing is 0.318" (8.08mm), differing from the main part. RoHS compliant. Includes board lock feature.

Parameter Comparison

Engineering Selection Recommendations

Selection among these parts is determined by specific application requirements and regulatory constraints:

DEM09S500M remains the primary choice for applications requiring 7.5A per contact current capacity, 300V voltage rating, and extended operating temperature to 125°C. This part is suitable for legacy designs and applications where RoHS non-compliance is acceptable.

5745438-1 and 5745438-4 are suitable for applications with reduced current requirements (6A maximum per contact) and lower voltage operation (125V maximum). These TE Connectivity parts offer RoHS compliance and are interchangeable mechanically, though backset spacing differs at 0.454" versus 0.406". The distinction between these two parts is packaging format: 5745438-1 is supplied in tray packaging, while 5745438-4 is supplied in bulk. Selection between them depends on procurement and assembly requirements.

L77SDE09SA4CH is appropriate for applications with the lowest current requirements (3A per contact) and moderate voltage operation (250V maximum). This part maintains the full operating temperature range of the main part (-55°C to 125°C) and offers RoHS compliance. The reduced backset spacing (0.318" versus 0.406") requires PCB layout verification before substitution. The board lock feature provides additional mechanical retention.

Frequently Asked Questions (FAQ)

Q: Can 5745438-1 or 5745438-4 be used as direct replacements for DEM09S500M?

A: These parts are mechanically compatible as D-Sub 9-position receptacles with identical shell size and through-hole right-angle solder termination. However, electrical ratings differ: maximum current is 6A per contact (versus 7.5A) and maximum voltage is 125V (versus 300V). Backset spacing is 0.454" instead of 0.406", requiring PCB layout verification. Substitution is valid only if application requirements do not exceed these electrical limits.

Q: What is the significance of backset spacing differences?

A: Backset spacing defines the distance from the connector mounting surface to the contact plane. The main part specifies 0.406" (10.30mm), while TE Connectivity substitutes specify 0.454" (11.53mm), and the Amphenol SD series specifies 0.318" (8.08mm). These differences affect PCB layout, mating connector alignment, and overall assembly geometry. Substitution requires verification that the receiving PCB and mating connector accommodate the different spacing.

Q: Is L77SDE09SA4CH suitable for high-current applications?

A: No. The L77SDE09SA4CH is rated for 3A per contact maximum, making it unsuitable for applications requiring the 7.5A per contact capacity of the DEM09S500M. This part is appropriate only for signal-level or low-current applications.

Q: What are the RoHS compliance implications?

A: The DEM09S500M is RoHS non-compliant due to yellow cadmium plating on the steel shell. Both TE Connectivity substitutes (5745438-1 and 5745438-4) and the Amphenol SD series (L77SDE09SA4CH) are RoHS compliant with tin-plated steel shells. Selection of RoHS-compliant alternatives is required for applications subject to RoHS regulations or customer specifications.

Q: How do operating temperature ranges affect substitution?

A: The DEM09S500M and L77SDE09SA4CH both support -55°C to 125°C operation. The TE Connectivity AMPLIMITE HDP-20 series (5745438-1 and 5745438-4) supports -55°C to 105°C. Applications requiring operation above 105°C must use either the main part or the Amphenol SD series.

Q: What is the difference between 5745438-1 and 5745438-4?

A: These parts are electrically and mechanically identical. The distinction is packaging: 5745438-1 is supplied in tray packaging, while 5745438-4 is supplied in bulk packaging. Selection depends on procurement volume, assembly process requirements, and inventory management practices.