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DEM09S343 D-Sub 9-Position Receptacle Equivalent & Substitute Parts
Part Overview
The DEM09S343 is a 9-position D-Sub receptacle connector manufactured by Amphenol ICC (FCI) in the DM HE501 series. This through-hole solder-terminated connector features female sockets with a DE/E shell size (1) and is designed for signal applications in harsh environments. The part is currently active in production with 732 units in stock.
Equivalent and substitute parts are necessary when the primary part becomes unavailable, when alternative packaging formats are required, or when design specifications allow for compatible alternatives from different manufacturers that meet the same electrical and mechanical requirements.
Substiute Parts
Key Parameters
| Parameter | DEM09S343 Value |
|---|---|
| Connector Style | D-Sub |
| Connector Type | Receptacle, Female Sockets |
| Number of Positions | 9 |
| Number of Rows | 2 |
| Shell Size, Connector Layout | 1 (DE, E) |
| Mounting Type | Through Hole |
| Termination | Solder |
| Current Rating (Amps) | 7.5A per Contact |
| Voltage Rating | 300V |
| Operating Temperature | -55°C ~ 125°C |
| Material Flammability Rating | UL94 V-0 |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the DEM09S343 is determined by the following mandatory parameters:
- Connector style (D-Sub)
- Connector type (Receptacle, Female Sockets)
- Number of positions (9)
- Number of rows (2)
- Shell size and layout (1 / DE, E)
- Mounting type (Through Hole)
- Termination method (Solder)
- Material flammability rating (UL94 V-0)
- Moisture sensitivity level (1 / Unlimited)
Substitute parts are grouped into two categories based on electrical performance:
Category A (Full Electrical Compatibility): Parts with current rating ≥7.5A and voltage rating ≥300V. These parts maintain identical electrical performance to the DEM09S343.
Category B (Reduced Electrical Performance): Parts with current rating <7.5A or voltage rating <300V. These parts have lower electrical ratings and require design verification before substitution.
Parameter Comparison
| Parameter | DEM09S343 | L77DE09SU | 09641127230 | 09641127235 | 09661116503 | 09661117503 | 09661556513 | 1-338313-2 | 1-5747150-3 | 1-5747150-4 | 1-5747150-6 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | Amphenol ICC (FCI) | Amphenol ICC (Commercial) | HARTING | HARTING | HARTING | HARTING | HARTING | TE Connectivity AMP | TE Connectivity AMP | TE Connectivity AMP | TE Connectivity AMP |
| Connector Type | Receptacle, Female Sockets | Receptacle, Female Sockets | Receptacle, Female Sockets | Receptacle, Female Sockets | Receptacle, Female Sockets | Receptacle, Female Sockets | Receptacle, Female Sockets | Receptacle, Female Sockets | Receptacle, Female Sockets | Receptacle, Female Sockets | Receptacle, Female Sockets |
| Number of Positions | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
| Shell Size, Layout | 1 (DE, E) | 1 (DE, E) | 1 (DE, E) | 1 (DE, E) | 1 (DE, E) | 1 (DE, E) | 1 (DE, E) | 1 (DE, E) | 1 (DE, E) | 1 (DE, E) | 1 (DE, E) |
| Mounting Type | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole |
| Termination | Solder | Solder | Solder | Solder | Solder | Solder | Solder | Solder | Solder | Solder | Solder |
| Current Rating (Amps) | 7.5A | 7.5A | 7.5A | 7.5A | 6.5A | 6.5A | 6.5A | 6A | 6A | 6A | 6A |
| Voltage Rating | 300V | 300V | 100V | 100V | — | — | — | — | 125V | 125V | 125V |
| Operating Temperature | -55°C ~ 125°C | -55°C ~ 125°C | -20°C ~ 125°C | -20°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 105°C | -55°C ~ 105°C | -55°C ~ 105°C | -55°C ~ 105°C |
| Material Flammability Rating | UL94 V-0 | UL94 V-0 | UL94 V-0 | UL94 V-0 | UL94 V-0 | UL94 V-0 | UL94 V-0 | UL94 V-0 | UL94 V-0 | UL94 V-0 | UL94 V-0 |
| RoHS Status | RoHS non-compliant | RoHS Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | RoHS Compliant | RoHS Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
L77DE09SU (Amphenol ICC Commercial Products) is the primary direct equivalent. It maintains identical electrical specifications (7.5A, 300V) and operating temperature range (-55°C ~ 125°C) as the DEM09S343. The part is RoHS Compliant and available in bulk packaging with 1260 units in stock. The primary difference is shell finish (tin plated versus yellow cadmium plated) and contact material (brass versus phosphor bronze), which do not affect functional compatibility.
1-5747150-4 and 1-5747150-6 (TE Connectivity AMP Connectors, AMPLIMITE HD-20 series) are suitable substitutes for applications where voltage requirements do not exceed 125V. Both parts maintain the full current rating of 6A and operating temperature range of -55°C ~ 105°C. These parts are RoHS Compliant with gold contact finish and are available in tube packaging with 1757 and 3384 units in stock respectively.
09641127235 (HARTING) is suitable for applications where voltage requirements do not exceed 100V and operating temperature does not fall below -20°C. This part includes board lock and filter features and is ROHS3 Compliant with 1362 units in stock.
09661116503, 09661117503, and 09661556513 (HARTING) are suitable for applications where voltage requirements are not specified and current requirements do not exceed 6.5A. These parts feature mating side female screwlock flanges and are ROHS3 Compliant with operating temperature range of -55°C ~ 125°C.
1-338313-2 (TE Connectivity AMP Connectors, AMPLIMITE HDP-20 series) is suitable for applications where operating temperature does not exceed 105V and voltage requirements are not specified. This part includes board lock feature and is ROHS3 Compliant with 2800 units in stock.
Frequently Asked Questions (FAQ)
Q: Can L77DE09SU be used as a direct replacement for DEM09S343?
A: Yes. L77DE09SU maintains identical electrical specifications (7.5A current rating, 300V voltage rating) and operating temperature range (-55°C ~ 125°C). Both parts are 9-position D-Sub receptacles with through-hole solder termination and UL94 V-0 flammability rating. The primary differences are packaging format (bulk versus tray) and shell finish material.
Q: What is the difference between the HARTING 09641127235 and the DEM09S343?
A: The 09641127235 has a lower voltage rating (100V versus 300V) and narrower operating temperature range (-20°C ~ 125°C versus -55°C ~ 125°C). It includes board lock and filter features not present in the DEM09S343. Substitution is appropriate only for applications that do not require the higher voltage rating or extended low-temperature operation.
Q: Are TE Connectivity AMPLIMITE HD-20 series parts (1-5747150-3, 1-5747150-4, 1-5747150-6) compatible with DEM09S343?
A: These parts are mechanically and functionally compatible for applications where voltage does not exceed 125V and operating temperature does not exceed 105°C. The current rating is 6A versus 7.5A for the DEM09S343. All three parts feature mating side female screwlock flanges and are available in tube packaging.
Q: What packaging formats are available for substitute parts?
A: Substitute parts are available in the following packaging formats: tray (L77DE09SU, 1-338313-2), bulk (09641127230, 09641127235, 09661116503, 09661117503, 09661556513), and tube (1-5747150-3, 1-5747150-4, 1-5747150-6). Packaging selection depends on assembly process requirements and inventory management practices.
Q: Which substitute parts are RoHS Compliant?
A: L77DE09SU is RoHS Compliant. HARTING parts (09641127230, 09641127235, 09661116503, 09661117503, 09661556513) are ROHS3 Compliant. TE Connectivity parts 1-338313-2 is ROHS3 Compliant, while 1-5747150-4 and 1-5747150-6 are RoHS Compliant. The original DEM09S343 is RoHS non-compliant.
Q: What are the key mechanical differences between substitute parts?
A: Flange features vary across substitute parts. The DEM09S343 and L77DE09SU feature unthreaded housing/shell flanges. HARTING 09641127235 features board side (4-40) flange. HARTING 09661116503, 09661117503, and 09661556513 feature mating side female screwlock (4-40) flanges. TE Connectivity 1-338313-2 features housing/shell (4-40) flange with board lock. TE Connectivity AMPLIMITE HD-20 series parts feature mating side female screwlock (4-40) flanges.
Q: Can substitute parts with lower current ratings be used in high-current applications?
A: No. Parts with current ratings below 7.5A (such as HARTING and TE Connectivity alternatives rated at 6A or 6.5A) must not be used in applications requiring the full 7.5A current capacity of the DEM09S343. Application current requirements must be verified against substitute part specifications before selection.
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