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172-009-281-021 D-Sub 9 Position Receptacle Connector Equivalent & Substitute Parts
Part Overview
The 172-009-281-021 is a 9 Position D-Sub Receptacle connector manufactured by NorComp Inc., featuring female sockets with panel mount, through-hole solder termination. This connector is classified as a D-Shaped connector (Shell Size 1, DE/E layout) with 2 rows and signal contact type. The part is actively stocked with 767 units available in new original condition.
Equivalent and substitute parts are identified based on matching core electrical and mechanical parameters: 9-position configuration, D-Sub receptacle style with female sockets, Shell Size 1 (DE, E) layout, 2-row arrangement, solder termination, and compatible mounting specifications. Alternative sources ensure design flexibility, supply chain continuity, and compliance with industry standards.
Substiute Parts
Key Parameters
| Parameter | 172-009-281-021 |
|---|---|
| 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 | Panel Mount, Through Hole |
| Termination | Solder |
| Shell Material, Finish | Steel, Nickel Plated |
| Contact Type | Signal |
| Flange Feature | Board Side (4-40) |
| Material Flammability Rating | UL94 V-0 |
| Current Rating (Amps) | 5A |
| Contact Finish | Gold |
| Contact Finish Thickness | Flash |
| Dielectric Material | Polybutylene Terephthalate (PBT) |
| Operating Temperature | -50°C ~ 125°C |
| RoHS Status | ROHS3 Compliant |
| REACH Status | REACH Unaffected |
| Product Status | Active |
Substitute Part Grouping Explanation
Substitute parts are grouped into two categories based on compatibility with the 172-009-281-021:
Category A: Direct Substitutes (Identical Core Parameters) Parts matching all critical parameters: 9-position D-Sub receptacle, female sockets, Shell Size 1 (DE, E), 2-row configuration, solder termination, panel/through-hole mounting, UL94 V-0 flammability rating, ROHS3 compliance, and REACH unaffected status. These parts differ only in packaging format (Tray vs. Bulk) or minor flange feature variations (Board Side 4-40 vs. Housing/Shell M3/4-40).
Category B: Functional Equivalents (Compatible Electrical/Mechanical Parameters) Parts maintaining 9-position D-Sub receptacle configuration, female sockets, Shell Size 1 (DE, E), 2-row arrangement, and solder termination, but with variations in current rating (6.5A–7.5A vs. 5A), contact finish (Gold vs. unspecified), flange features (Housing/Shell vs. Board Side), or additional features (Board Lock). These parts are electrically and mechanically compatible for applications where the parameter variations are acceptable.
Key Substitution Parameters:
- Connector Style: D-Sub (fixed)
- Connector Type: Receptacle, Female Sockets (fixed)
- Number of Positions: 9 (fixed)
- Shell Size, Connector Layout: 1 (DE, E) (fixed)
- Termination: Solder (fixed)
- Material Flammability Rating: UL94 V-0 (fixed)
- RoHS Status: ROHS3 Compliant (fixed)
Parameter Comparison
| Part Number | Manufacturer | Positions | Connector Type | Shell Size | Mounting Type | Termination | Current Rating (A) | Contact Finish | Flange Feature | Operating Temp (°C) | Inventory (Pcs) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 172-009-281-021 | NorComp Inc. | 9 | Receptacle, Female Sockets | 1 (DE, E) | Panel Mount, Through Hole | Solder | 5 | Gold (Flash) | Board Side (4-40) | -50 ~ 125 | 767 |
| 172-009-283L021 | NorComp Inc. | 9 | Receptacle, Female Sockets | 1 (DE, E) | Panel Mount, Through Hole | Solder | 5 | Gold (Flash) | Board Side (4-40) | -50 ~ 125 | 2607 |
| 09661116501 | HARTING | 9 | Receptacle, Female Sockets | 1 (DE, E) | Through Hole | Solder | 6.5 | — | Housing/Shell (M3) | -55 ~ 125 | 1171 |
| 09661116502 | HARTING | 9 | Receptacle, Female Sockets | 1 (DE, E) | Through Hole | Solder | 6.5 | — | Housing/Shell (4-40) | -55 ~ 125 | 1052 |
| 09661117501 | HARTING | 9 | Receptacle, Female Sockets | 1 (DE, E) | Through Hole | Solder | 6.5 | — | Housing/Shell (M3) | -55 ~ 125 | 1047 |
| 09661117502 | HARTING | 9 | Receptacle, Female Sockets | 1 (DE, E) | Through Hole | Solder | 6.5 | — | Housing/Shell (4-40) | -55 ~ 125 | 686 |
| 09661516512 | HARTING | 9 | Receptacle, Female Sockets | 1 (DE, E) | Through Hole | Solder | 6.5 | — | Housing/Shell (4-40) | -55 ~ 125 | 1485 |
| 09661556511 | HARTING | 9 | Receptacle, Female Sockets | 1 (DE, E) | Through Hole | Solder | 6.5 | Gold | Housing/Shell (M3) | -55 ~ 125 | 927 |
| 09661556512 | HARTING | 9 | Receptacle, Female Sockets | 1 (DE, E) | Through Hole | Solder | 6.5 | Gold | Housing/Shell (4-40) | -55 ~ 125 | 853 |
| 09670094755 | HARTING | 9 | Receptacle, Female Sockets | 1 (DE, E) | Through Hole | Solder | 7.5 | — | Housing/Shell (Unthreaded) | -55 ~ 125 | 872 |
| 628-009-220-014 | Mercury United Electronics, Inc. | 9 | Receptacle, Female Sockets | 1 (DE, E) | Through Hole | Solder | 5 | Gold (Flash) | Board Side (4-40) | -55 ~ 85 | 843 |
Engineering Selection Recommendations
Primary Substitute: 172-009-283L021 (NorComp Inc.) This part is the closest equivalent to 172-009-281-021, matching all electrical and mechanical parameters identically. Both are NorComp Inc. products within the 172 series, with identical 5A current rating, gold flash contact finish, board-side 4-40 flange feature, and -50°C to 125°C operating temperature range. The only difference is packaging format (Tray vs. unspecified). This part is ROHS3 compliant and REACH unaffected, maintaining full regulatory alignment. Inventory availability is higher at 2607 units.
Secondary Substitutes: HARTING 09661116502, 09661117502, 09661516512 (Housing/Shell 4-40 Flange) These HARTING parts maintain the critical 9-position D-Sub receptacle configuration, Shell Size 1 (DE, E), 2-row female sockets, and solder termination. They feature higher current ratings (6.5A) and extended operating temperature range (-55°C to 125°C). The flange feature differs (Housing/Shell 4-40 vs. Board Side 4-40), which affects mounting interface compatibility. All are ROHS3 compliant and REACH unaffected. These parts are suitable for applications where the higher current capacity and extended temperature range are beneficial and the flange mounting interface is compatible.
Alternative Substitute: 628-009-220-014 (Mercury United Electronics, Inc.) This part matches the 172-009-281-021 in 9-position configuration, 5A current rating, gold flash contact finish, and board-side 4-40 flange feature. Operating temperature range is -55°C to 85°C, which is narrower than the original part. The part is ROHS3 compliant and REACH unaffected. This option is suitable for applications operating within the -55°C to 85°C range where the identical current rating and flange configuration are required.
Substitutes with Board Lock Feature: 09661516512, 09661556511, 09661556512 (HARTING) These parts include board lock features and are available with gold contact finish (09661556511, 09661556512). They maintain 9-position D-Sub receptacle configuration and Shell Size 1 (DE, E) layout with 6.5A current rating. The board lock feature provides additional mechanical retention. These parts are ROHS3 compliant and REACH unaffected, suitable for applications requiring enhanced mechanical stability.
Higher Current Rating Option: 09670094755 (HARTING) This part provides 7.5A current rating with machined contact form, supporting higher power applications. It maintains the 9-position D-Sub receptacle, Shell Size 1 (DE, E), and solder termination. The flange feature is Housing/Shell (Unthreaded), which differs from the original board-side mounting. This part is ROHS3 compliant and REACH unaffected.
Frequently Asked Questions (FAQ)
Q: Can 172-009-283L021 be used as a direct replacement for 172-009-281-021? A: Yes. Both parts are manufactured by NorComp Inc. within the 172 series and share identical electrical and mechanical specifications: 9-position D-Sub receptacle, female sockets, Shell Size 1 (DE, E), 5A current rating, gold flash contact finish, board-side 4-40 flange, and -50°C to 125°C operating temperature. The difference is packaging format (Tray). Both are ROHS3 compliant and REACH unaffected.
Q: What is the difference between board-side and housing/shell flange features? A: Board-side flange (4-40) mounts directly to the PCB with threaded fasteners on the connector shell. Housing/shell flange (M3 or 4-40) mounts to the connector housing itself. These are different mechanical interfaces and are not interchangeable without adapter modifications. Verify your application's mounting interface before substitution.
Q: Can HARTING parts with 6.5A rating replace the 5A-rated 172-009-281-021? A: HARTING parts 09661116502, 09661117502, and 09661516512 are electrically and mechanically compatible with the 172-009-281-021 for 9-position D-Sub receptacle applications. The higher 6.5A current rating provides additional capacity and does not prevent use in 5A applications. However, verify that the flange feature (Housing/Shell 4-40 vs. Board Side 4-40) is compatible with your PCB mounting interface.
Q: What is the significance of the board lock feature in 09661516512 and 09661556511? A: The board lock feature provides mechanical retention to prevent accidental connector separation during operation. This is an additional feature not present in the 172-009-281-021. If your application requires enhanced mechanical stability, these parts are suitable alternatives. The electrical and mechanical core parameters remain compatible.
Q: Is 628-009-220-014 suitable for all applications using 172-009-281-021? A: 628-009-220-014 is suitable for applications operating within the -55°C to 85°C temperature range. The original 172-009-281-021 operates from -50°C to 125°C. If your application requires operation above 85°C or below -55°C, 628-009-220-014 is not appropriate. For applications within the -55°C to 85°C range, this part is compatible with identical 5A current rating and board-side 4-40 flange feature.
Q: Why do some substitute parts have unspecified contact finish? A: Contact finish specifications are provided only when explicitly documented in the product data. Unspecified contact finish does not indicate inferior quality but rather reflects available technical documentation. For applications requiring specific contact finish properties (such as gold plating for corrosion resistance), select parts with documented gold contact finish: 172-009-283L021, 09661556511, 09661556512, or 628-009-220-014.
Q: Can 09670094755 with 7.5A rating be used in place of the 5A-rated 172-009-281-021? A: Yes, for electrical compatibility. The 7.5A rating supports higher current applications. However, the flange feature differs (Housing/Shell Unthreaded vs. Board Side 4-40), which affects mounting interface compatibility. Verify that your PCB mounting interface accommodates the unthreaded housing/shell flange before substitution.
Q: Are all substitute parts ROHS3 compliant and REACH unaffected? A: Yes. All substitute parts listed are ROHS3 compliant and REACH unaffected, matching the regulatory status of the 172-009-281-021. This ensures compliance with environmental and hazardous substance restrictions across all alternatives.
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