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AT16-18SE-EK02 Equivalent & Substitute Parts
Part Overview
The AT16-18SE-EK02 is an 18-position rectangular connector plug housing manufactured by Amphenol Sine Systems Corp within the AT Series™ product line. This connector features female socket contacts, crimp termination, and latch lock fastening, designed for free-hanging in-line mounting applications. The housing is gray thermoplastic with sealed design and integrated cap cover. The part is classified as Active product status with full ROHS3 compliance and REACH unaffected designation.
Substitute parts are necessary when specific color requirements, packaging preferences, or inventory availability necessitate alternative housing configurations while maintaining identical electrical and mechanical specifications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | Amphenol Sine Systems Corp |
| Series | AT Series™ |
| Category | Rectangular Connectors |
| Connector Type | Plug |
| Contact Type | Female Socket |
| Number of Positions | 18 |
| Number of Rows | 3 |
| Mounting Type | Free Hanging (In-Line) |
| Contact Termination | Crimp |
| Fastening Type | Latch Lock |
| Insulation Material | Thermoplastic |
| Operating Temperature Range | -55°C ~ 125°C |
| Features | Cap (Cover), Sealed |
| RoHS Status | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) |
| REACH Status | REACH Unaffected |
| Base Product Number | AT16 |
Substitute Part Grouping Explanation
Substitution of the AT16-18SE-EK02 is determined by strict equivalence across all electrical and mechanical parameters. The following parameters remain constant across all substitute parts and define the substitution basis:
- Connector Type: Plug
- Contact Type: Female Socket
- Number of Positions: 18
- Number of Rows: 3
- Mounting Type: Free Hanging (In-Line)
- Contact Termination: Crimp
- Fastening Type: Latch Lock
- Insulation Material: Thermoplastic
- Operating Temperature Range: -55°C ~ 125°C
- Features: Cap (Cover), Sealed
- RoHS Status: ROHS3 Compliant
- MSL Rating: 1 (Unlimited)
- REACH Status: REACH Unaffected
- Manufacturer: Amphenol Sine Systems Corp
- Series: AT Series™
The only variable parameter across substitute parts is housing color. All substitute parts maintain identical form, fit, and function while offering alternative color options: Gray (EK02 suffix variants), Black (K004 suffix variants), Green (SC-EK02), and Brown (SD-EK02).
Parameter Comparison
| Part Number | Manufacturer | Connector Type | Contact Type | Positions | Rows | Mounting Type | Termination | Fastening | Color | Operating Temp | RoHS | Inventory (Pcs) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AT16-18SE-EK02 | Amphenol Sine Systems Corp | Plug | Female Socket | 18 | 3 | Free Hanging (In-Line) | Crimp | Latch Lock | Gray | -55°C ~ 125°C | ROHS3 Compliant | 801 |
| AT16-18SA-EK02 | Amphenol Sine Systems Corp | Plug | Female Socket | 18 | 3 | Free Hanging (In-Line) | Crimp | Latch Lock | Gray | -55°C ~ 125°C | ROHS3 Compliant | 287792 |
| AT16-18SC-EK02 | Amphenol Sine Systems Corp | Plug | Female Socket | 18 | 3 | Free Hanging (In-Line) | Crimp | Latch Lock | Green | -55°C ~ 125°C | ROHS3 Compliant | 1531 |
| AT16-18SA-K004 | Amphenol Sine Systems Corp | Plug | Female Socket | 18 | 3 | Free Hanging (In-Line) | Crimp | Latch Lock | Black | -55°C ~ 125°C | ROHS3 Compliant | 3104 |
| AT16-18SB-K004 | Amphenol Sine Systems Corp | Plug | Female Socket | 18 | 3 | Free Hanging (In-Line) | Crimp | Latch Lock | Black | -55°C ~ 125°C | ROHS3 Compliant | 2266 |
| AT16-18SC-K004 | Amphenol Sine Systems Corp | Plug | Female Socket | 18 | 3 | Free Hanging (In-Line) | Crimp | Latch Lock | Black | -55°C ~ 125°C | ROHS3 Compliant | 1535 |
| AT16-18SD-EK02 | Amphenol Sine Systems Corp | Plug | Female Socket | 18 | 3 | Free Hanging (In-Line) | Crimp | Latch Lock | Brown | -55°C ~ 125°C | ROHS3 Compliant | 896 |
| AT16-18SD-K004 | Amphenol Sine Systems Corp | Plug | Female Socket | 18 | 3 | Free Hanging (In-Line) | Crimp | Latch Lock | Black | -55°C ~ 125°C | ROHS3 Compliant | 1459 |
| AT16-18SE-K004 | Amphenol Sine Systems Corp | Plug | Female Socket | 18 | 3 | Free Hanging (In-Line) | Crimp | Latch Lock | Black | -55°C ~ 125°C | ROHS3 Compliant | 1678 |
Engineering Selection Recommendations
All listed substitute parts maintain full electrical and mechanical compatibility with the AT16-18SE-EK02. Selection between equivalent parts is based on the following criteria:
Color-Based Selection: The AT16-18SE-EK02 features gray housing. Substitute parts are available in gray (AT16-18SA-EK02), green (AT16-18SC-EK02), and brown (AT16-18SD-EK02) with EK02 suffix designation, or black variants with K004 suffix designation (AT16-18SA-K004, AT16-18SB-K004, AT16-18SC-K004, AT16-18SD-K004, AT16-18SE-K004).
Compliance Status: All substitute parts carry identical ROHS3 compliance, REACH unaffected status, and MSL rating of 1 (Unlimited), ensuring regulatory equivalence across all options.
Product Status: All substitute parts maintain Active product status, confirming ongoing manufacturer support and availability.
Inventory Availability: AT16-18SA-EK02 offers the highest inventory level at 287,792 pieces, providing maximum supply assurance. Black variants (K004 suffix) range from 1,459 to 3,104 pieces. Gray and specialty color options (EK02 suffix) range from 801 to 1,531 pieces.
Frequently Asked Questions (FAQ)
Q: Can AT16-18SE-EK02 be directly replaced with AT16-18SA-EK02?
A: Yes. Both parts are electrically and mechanically identical 18-position plug housings with female socket contacts, crimp termination, and latch lock fastening. The only difference is internal connector designation (SE versus SA), which does not affect form, fit, or function. Both feature gray housing and identical operating specifications.
Q: What is the difference between EK02 and K004 suffix variants?
A: The suffix designation indicates packaging and color coding. EK02 variants include gray (SE, SA), green (SC), and brown (SD) housing colors. K004 variants are black housing. All maintain identical electrical and mechanical specifications, operating temperature range, and compliance certifications.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All listed substitute parts carry ROHS3 compliance certification and REACH unaffected status, matching the regulatory profile of the AT16-18SE-EK02.
Q: Can I use a black housing variant (K004) in place of the gray housing (EK02)?
A: Yes, from an electrical and mechanical standpoint. All K004 black variants (AT16-18SA-K004, AT16-18SB-K004, AT16-18SC-K004, AT16-18SD-K004, AT16-18SE-K004) are functionally equivalent to the AT16-18SE-EK02. Color selection depends on application requirements and visual identification needs.
Q: What is the operating temperature range for all substitute parts?
A: All substitute parts operate across the identical temperature range of -55°C to 125°C, ensuring thermal equivalence across all options.
Q: Are contacts included with these connector housings?
A: No. All parts, including the main part and all substitutes, are housings only. Contacts are not included and must be sourced separately.
Q: Which substitute part has the highest inventory availability?
A: AT16-18SA-EK02 offers the highest inventory level at 287,792 pieces in stock, providing maximum supply assurance for high-volume applications.
Q: Do all substitute parts use crimp termination?
A: Yes. All substitute parts utilize crimp contact termination with latch lock fastening, maintaining identical assembly and installation methods.
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