EM221810V Terminal Block Header - Equivalent & Substitute Parts

Part Overview

The EM221810V is a 10-position terminal block header manufactured by Eaton Electronics Division, part of the Euro-Mag EM2218 series. This component is a male pin, shrouded (4-side) vertical through-hole terminal block with 0.200" (5.08mm) pitch spacing, designed for solder termination applications. The part is currently active in production with 668 units in stock.

Terminal block headers serve as connection interfaces in industrial control systems, power distribution, and signal routing applications. Equivalent and substitute parts become necessary when the primary part experiences supply constraints, extended lead times, or when design flexibility permits the use of compatible alternatives from different manufacturers while maintaining electrical and mechanical compatibility.

Substiute Parts

EM221810V

Eaton - Electronics DivisionIn Stock: 728EM221810V Datasheet

Current PartRFQ

0395255010

MolexIn Stock: 12660395255010 Datasheet

SimilarRFQ

0395355010

MolexIn Stock: 14890395355010 Datasheet

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1-796867-0

TE Connectivity AMP ConnectorsIn Stock: 12331-796867-0 Datasheet

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1776964

Phoenix ContactIn Stock: 12491776964 Datasheet

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1777154

Phoenix ContactIn Stock: 11281777154 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the EM221810V is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

• Number of Positions: 10 (exact match required)
• Pitch: 0.200" (5.08mm) or 0.197" (5.00mm) (minor tolerance variation acceptable within mechanical compatibility)
• Header Orientation: Vertical (exact match required)
• Type: Header, Male Pins, Shrouded (4 Side) (exact match required)
• Termination Style: Solder (exact match required)
• Mounting Type: Through Hole (exact match required)
• Voltage Rating (UL): 300 V minimum (equal or higher acceptable)
• Current Rating (UL): 12 A minimum (equal or higher acceptable)
• Material Flammability Rating: UL94 V-0 (exact match required)
• Contact Mating Finish: Tin (exact match required)
• Features: Mating Flange (required)

Secondary Compatibility Factors:

• Operating Temperature Range: Minimum -40°C to maximum 105°C or higher
• Housing Material: Thermoplastic, Polyamide (PA66), Nylon 6/6, or Polybutylene Terephthalate (PBT)
• Contact Material: Brass or Copper Alloy
• Insulation Height: 0.472" (12.00mm) or equivalent
• RoHS Compliance: ROHS3 Compliant or equivalent environmental standard

Four substitute parts meet these criteria and are grouped as direct equivalents based on pitch classification:

Group A - 5.08mm Pitch (Exact Pitch Match):

• 0395355010 (Molex Eurostyle ESE 39535)
• 1-796867-0 (TE Connectivity AMP Buchanan)
• 1777154 (Phoenix Contact COMBICON MSTBV)

Group B - 5.00mm Pitch (Minor Pitch Variation):

• 0395255010 (Molex Eurostyle ESE 39525)
• 1776964 (Phoenix Contact COMBICON MSTBV)

Parameter Comparison

Engineering Selection Recommendations

Group A - 5.08mm Pitch Direct Equivalents (Recommended Primary Substitutes):

0395355010 (Molex Eurostyle ESE 39535) is the highest-priority substitute for the EM221810V. This part maintains exact pitch specification (0.200" / 5.08mm), identical electrical ratings (300 V UL, 15 A UL capability exceeds the 12 A requirement), and equivalent mechanical form factor. The Molex part features an extended operating temperature range (-40°C to 115°C) compared to the Eaton original (-55°C to 105°C), providing superior thermal margin in high-temperature applications. Housing material is Polyamide (PA66) Nylon 6/6, which meets UL94 V-0 flammability requirements. Inventory availability is 1459 units. This part is suitable for direct substitution in all applications where the EM221810V is specified.

1-796867-0 (TE Connectivity AMP Buchanan) provides an alternative 5.08mm pitch equivalent with identical mechanical and electrical specifications. Current rating of 15 A exceeds the 12 A requirement. Operating temperature range extends to 110°C. Contact material is specified as Copper Alloy rather than Brass, which maintains electrical performance within acceptable parameters. Housing material is Polyamide (PA66) Nylon 6/6. Inventory availability is 1193 units. This part is suitable for direct substitution.

1777154 (Phoenix Contact COMBICON MSTBV) maintains exact 5.08mm pitch and identical insulation height (0.472" / 12.00mm). Current rating matches the original at 12 A UL. Housing material is Polybutylene Terephthalate (PBT), which provides enhanced chemical resistance compared to Polyamide. This part includes both mating and mounting flanges, offering additional mechanical stability. RoHS3 compliance is confirmed. Inventory availability is 1042 units. This part is suitable for direct substitution.

Group B - 5.00mm Pitch Alternatives (Secondary Substitutes for Pitch-Tolerant Applications):

0395255010 (Molex Eurostyle ESE 39525) operates at 0.197" (5.00mm) pitch, representing a 0.08mm (0.003") deviation from the EM221810V specification. This minor pitch variation may be acceptable in applications where connector mating tolerances permit. Current rating of 15 A exceeds requirements. Operating temperature range is -40°C to 105°C. Housing material is Polyamide (PA66) Nylon 6/6. Inventory availability is 1242 units. Use this part only when mechanical compatibility with 5.00mm pitch has been confirmed through design review.

1776964 (Phoenix Contact COMBICON MSTBV) operates at 0.197" (5.00mm) pitch with the same pitch tolerance considerations as the Molex 0395255010. Current rating matches the original at 12 A. Housing material is Polybutylene Terephthalate (PBT). This part includes both mating and mounting flanges. RoHS3 compliance is confirmed. Inventory availability is 1157 units. Use this part only when mechanical compatibility with 5.00mm pitch has been confirmed.

Selection Priority:

1. First choice: 0395355010 (Molex) or 1777154 (Phoenix Contact) for exact 5.08mm pitch match
2. Second choice: 1-796867-0 (TE Connectivity) for exact 5.08mm pitch match with alternative contact material
3. Third choice: 0395255010 (Molex) or 1776964 (Phoenix Contact) only after confirming 5.00mm pitch compatibility

Frequently Asked Questions (FAQ)

Q: Can I use a 5.00mm pitch terminal block as a substitute for the 5.08mm EM221810V?

A: The 5.00mm pitch parts (0395255010 and 1776964) represent a 0.08mm pitch deviation. Substitution is possible only if the mating connector or socket has been designed with sufficient tolerance to accommodate this variation. Verify mechanical compatibility with the mating component before implementation. Group A parts with exact 5.08mm pitch (0395355010, 1-796867-0, 1777154) are preferred to eliminate this compatibility risk.

Q: What is the difference between the Eaton EM221810V housing material (Thermoplastic) and the substitute parts (Polyamide, PBT)?

A: All materials meet UL94 V-0 flammability requirements. Polyamide (PA66) Nylon 6/6 offers good electrical insulation and mechanical strength. Polybutylene Terephthalate (PBT) provides enhanced chemical resistance and dimensional stability at elevated temperatures. Thermoplastic is a general classification that may encompass similar polymer families. All materials are functionally equivalent for this application.

Q: Why do some substitute parts have higher current ratings (15 A) than the original (12 A)?

A: Higher current ratings indicate the substitute part can safely handle greater electrical loads. A 15 A rated part is fully compatible with a 12 A application, as it operates within its design margin. This provides additional safety headroom and does not affect compatibility.

Q: Are all substitute parts RoHS3 compliant like the original EM221810V?

A: The Eaton EM221810V is explicitly RoHS3 compliant. Phoenix Contact parts (1777154, 1776964) are confirmed RoHS3 compliant. Molex parts (0395355010, 0395255010) do not specify RoHS status in the provided data. TE Connectivity part (1-796867-0) indicates RoHS status as "Not applicable." For applications requiring RoHS3 certification, confirm compliance status with the manufacturer or select Phoenix Contact alternatives.

Q: What is the difference between "Mating Flange" and "Mating and Mounting Flange"?

A: A mating flange provides alignment and mechanical stability during connector mating. A mounting flange additionally provides a surface for securing the terminal block to a PCB or panel. Parts with both features (1777154, 1776964) offer enhanced mechanical stability. Parts with mating flange only (0395355010, 1-796867-0, 0395255010) are still fully functional but may require alternative mounting methods.

Q: Can I mix different substitute parts in the same assembly?

A: All Group A parts (5.08mm pitch) are mechanically and electrically interchangeable and can be used together in the same assembly. Group B parts (5.00mm pitch) should not be mixed with Group A or other Group B parts unless the application design specifically accommodates pitch variation. Maintain consistency within a single assembly to avoid mechanical stress or misalignment.

Q: What is the contact tail length difference, and does it affect PCB soldering?

A: The EM221810V has a contact tail length of 0.177" (4.50mm). Substitute parts range from 0.138" to 0.154" (3.50mm to 3.90mm). These variations are within standard PCB through-hole soldering tolerances. Verify that your PCB design accommodates the specific tail length of the selected substitute part to ensure adequate solder joint formation.

Q: Which substitute part offers the widest operating temperature range?

A: The Molex 0395355010 offers the widest operating temperature range at -40°C to 115°C, compared to the original EM221810V range of -55°C to 105°C. For applications requiring extended low-temperature operation below -40°C, the original EM221810V is required. For high-temperature applications up to 115°C, the Molex 0395355010 is the optimal choice.