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DCML37S300 D-Sub 37 Position Receptacle Connector
Part Overview
The DCML37S300 is a 37 position D-Sub receptacle connector manufactured by Amphenol ICC (FCI) in the DM HE501 series. This through-hole solder termination connector features female sockets with a shell size 4 (DC, C) layout and is designed for signal applications requiring 7.5A current capacity at 300V. The part is currently active in production with 1101 units in stock.
Equivalent and substitute parts are necessary when the original DCML37S300 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 | DCML37S300 Specification |
|---|---|
| Connector Type | Receptacle, Female Sockets |
| Number of Positions | 37 |
| Number of Rows | 2 |
| Shell Size, Connector Layout | 4 (DC, C) |
| Mounting Type | Through Hole |
| Termination | Solder |
| Current Rating (Amps) | 7.5A |
| Voltage Rating | 300V |
| Operating Temperature | -55°C ~ 125°C |
| Material Flammability Rating | UL94 V-0 |
| Contact Material | Phosphor Bronze |
| Shell Material, Finish | Steel, Yellow Cadmium Plated |
| Contact Finish | Gold |
| Flange Feature | Board Side (M3) |
Substitute Part Grouping Explanation
Substitution of the DCML37S300 is determined by strict equivalence in the following parameters:
- Connector type (Receptacle, Female Sockets)
- Number of positions (37) and rows (2)
- Shell size and layout (4 / DC, C)
- Mounting type (Through Hole)
- Termination method (Solder)
- Material flammability rating (UL94 V-0)
Substitute parts may vary in the following parameters while maintaining functional compatibility:
- Current rating (minimum 6A acceptable; DCML37S300 rated 7.5A)
- Voltage rating (minimum 100V acceptable; DCML37S300 rated 300V)
- Operating temperature range (minimum -55°C to 100°C acceptable; DCML37S300 rated -55°C to 125°C)
- Shell finish (Steel with various plating options)
- Contact finish (Gold or alternative finishes)
- Flange feature configuration (Board side, mating side, or housing variations)
- Dielectric material (Thermoplastic, PBT, PCT, Polyester, or Nylon variants)
- Contact material (Phosphor Bronze or Copper Alloy)
- Packaging format (Tray, Bulk, or Tube)
- RoHS compliance status (original is non-compliant; substitutes may be ROHS3 compliant)
Parameter Comparison
| Part Number | Manufacturer | Positions | Connector Type | Shell Size | Mounting Type | Termination | Current (A) | Voltage (V) | Temp Range (°C) | Flange Feature | Packaging | RoHS Status | Product Status |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DCML37S300 | Amphenol ICC (FCI) | 37 | Receptacle, Female Sockets | 4 (DC, C) | Through Hole | Solder | 7.5 | 300 | -55 ~ 125 | Board Side (M3) | Tray | Non-compliant | Active |
| 09644127235 | HARTING | 37 | Receptacle, Female Sockets | 4 (DC, C) | Through Hole | Solder | 7.5 | 100 | -20 ~ 125 | Board Side (4-40) | Bulk | ROHS3 Compliant | Active |
| 09664516513 | HARTING | 37 | Receptacle, Female Sockets | 4 (DC, C) | Through Hole | Solder | 6.5 | — | -55 ~ 125 | Mating Side, Female Screwlock (4-40) | Tray | ROHS3 Compliant | Active |
| 09664517513 | HARTING | 37 | Receptacle, Female Sockets | 4 (DC, C) | Through Hole | Solder | 6.5 | — | -55 ~ 125 | Mating Side, Female Screwlock (4-40) | Bulk | ROHS3 Compliant | Active |
| 1-5747301-4 | TE Connectivity AMP Connectors | 37 | Receptacle, Female Sockets | 4 (DC, C) | Through Hole | Solder | 6 | 125 | -55 ~ 105 | Mating Side, Female Screwlock (4-40) | Tube | ROHS3 Compliant | Active |
| 172-037-212R001 | NorComp Inc. | 37 | Receptacle, Female Sockets | 4 (DC, C) | Panel Mount, Through Hole | Solder | 5 | — | -50 ~ 100 | Housing/Shell (Unthreaded) | Tray | ROHS3 Compliant | Obsolete |
| 172-037-212R011 | NorComp Inc. | 37 | Receptacle, Female Sockets | 4 (DC, C) | Panel Mount, Through Hole | Solder | 5 | — | -50 ~ 100 | Board Side (4-40) | Tray | ROHS3 Compliant | Obsolete |
| 172-E37-213R001 | NorComp Inc. | 37 | Receptacle, Female Sockets | 4 (DC, C) | Panel Mount, Through Hole | Solder | 5 | — | -50 ~ 100 | Housing/Shell (Unthreaded) | Tray | ROHS3 Compliant | Active |
| 172-E37-213R011 | NorComp Inc. | 37 | Receptacle, Female Sockets | 4 (DC, C) | Panel Mount, Through Hole | Solder | 5 | — | -50 ~ 100 | Board Side (4-40) | Tray | ROHS3 Compliant | Active |
| 172-E37-213R031 | NorComp Inc. | 37 | Receptacle, Female Sockets | 4 (DC, C) | Panel Mount, Through Hole | Solder | 5 | — | -50 ~ 100 | Mating Side (4-40) | Tray | ROHS3 Compliant | Active |
| 172-E37-213R911 | NorComp Inc. | 37 | Receptacle, Female Sockets | 4 (DC, C) | Panel Mount, Through Hole | Solder | 5 | — | -50 ~ 100 | Board Side (4-40), Mating Side, Female Screwlock (4-40) | Tray | ROHS3 Compliant | Active |
Engineering Selection Recommendations
Direct Equivalents (Recommended for Direct Replacement)
The HARTING parts 09664516513 and 09664517513 provide the closest functional equivalence to DCML37S300. Both maintain the through-hole board-side mounting configuration, support the full -55°C to 125°C operating temperature range, and are ROHS3 compliant. The primary difference is packaging format (Tray vs. Bulk) and current rating (6.5A vs. 7.5A). These parts are suitable for applications where the 6.5A rating meets system requirements.
Alternative with Enhanced Compliance
The HARTING part 09644127235 is ROHS3 compliant and maintains 7.5A current capacity. However, it operates at -20°C minimum (versus -55°C for DCML37S300) and has a 100V voltage rating (versus 300V). This part is suitable only for applications with operating temperatures above -20°C and voltage requirements below 100V.
TE Connectivity Alternative
The TE Connectivity part 1-5747301-4 (AMPLIMITE HD-20 series) is ROHS3 compliant and maintains the -55°C to 125°C temperature range. Current rating is 6A and voltage rating is 125V. Operating temperature maximum is 105°C (versus 125°C for DCML37S300). This part is suitable for applications with maximum operating temperature at or below 105°C.
NorComp Alternatives (Limited Suitability)
NorComp parts 172-037-212R001, 172-037-212R011, 172-E37-213R001, 172-E37-213R011, 172-E37-213R031, and 172-E37-213R911 feature panel mount configurations in addition to through-hole mounting. These parts have reduced current ratings (5A) and narrower operating temperature ranges (-50°C to 100°C). Parts 172-037-212R001 and 172-037-212R011 are obsolete. NorComp parts are suitable only for applications with current requirements at or below 5A and operating temperatures between -50°C and 100°C.
Compliance Consideration
The original DCML37S300 is RoHS non-compliant. All listed substitute parts are ROHS3 compliant, making them suitable for applications requiring RoHS compliance.
Frequently Asked Questions (FAQ)
Q: Can I use a substitute part with a lower current rating than DCML37S300?
A: Substitution with lower current ratings is permissible only if your application's actual current draw does not exceed the substitute part's rating. DCML37S300 is rated 7.5A. HARTING 09664516513 and 09664517513 are rated 6.5A. TE Connectivity 1-5747301-4 is rated 6A. NorComp parts are rated 5A. Verify your circuit's maximum current requirement before selecting a substitute with reduced current capacity.
Q: What is the difference between board-side and mating-side flange features?
A: Board-side flange features mount to the printed circuit board with fastening holes on the connector body. Mating-side flange features include screwlock mechanisms on the mating interface for cable retention. DCML37S300 uses board-side (M3) mounting. Substitutes with different flange configurations may require PCB layout modifications or different cable retention approaches.
Q: Can I substitute DCML37S300 with a panel mount connector?
A: NorComp parts listed include panel mount capability in addition to through-hole mounting. However, these parts have reduced current ratings (5A maximum) and narrower operating temperature ranges (-50°C to 100°C). Panel mount substitution is suitable only if your application meets these reduced specifications and your enclosure design accommodates panel mounting.
Q: What is the significance of RoHS compliance in substitution?
A: DCML37S300 is RoHS non-compliant. All substitute parts listed are ROHS3 compliant. If your application or market requires RoHS compliance, any of the listed substitutes are acceptable from a compliance perspective. If RoHS compliance is not required, the original DCML37S300 remains viable.
Q: Does packaging format affect connector performance?
A: Packaging format (Tray, Bulk, or Tube) does not affect electrical or mechanical performance. Packaging affects handling, storage, and ordering quantities. DCML37S300 is supplied in Tray format. Substitutes are available in Tray, Bulk, or Tube formats. Select packaging based on your procurement and inventory management requirements.
Q: Can I use DCML37S300 in applications requiring -55°C operation?
A: Yes. DCML37S300 is rated -55°C to 125°C. HARTING 09644127235 has a -20°C minimum, making it unsuitable for -55°C operation. HARTING 09664516513, 09664517513, and TE Connectivity 1-5747301-4 support -55°C operation. NorComp parts support -50°C minimum, which is unsuitable for -55°C operation.
Q: What voltage rating should I consider for substitution?
A: DCML37S300 is rated 300V. Substitutes have lower voltage ratings: HARTING 09644127235 is 100V, TE Connectivity 1-5747301-4 is 125V, and NorComp parts do not specify voltage rating. Select a substitute with voltage rating equal to or greater than your application's maximum operating voltage. If your application requires 300V, only DCML37S300 meets this specification among the listed parts.
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