EM359305HC Terminal Block Header - Equivalent & Substitute Parts

Part Overview

The EM359305HC is a 5-position terminal block header manufactured by Eaton Electronics Division, part of the Euro-Mag EM3593 series. This component is a male pin, shrouded header with 0.150" (3.81mm) pitch spacing, designed for right-angle through-hole mounting and solder termination. The part is currently active in production with 784 units in stock.

Terminal block headers serve as connection interfaces in industrial control systems, power distribution modules, and signal routing applications. Equivalent substitute parts are identified when they maintain identical or superior electrical and mechanical specifications within the allowed parameter ranges for this product category.

Substiute Parts

EM359305HC

Eaton - Electronics DivisionIn Stock: 823EM359305HC Datasheet

Current PartRFQ

1803303

Phoenix ContactIn Stock: 32601803303 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for terminal block headers is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Number of positions: 5
• Pitch spacing: 0.150" (3.81mm)
• Header orientation: 90° right angle
• Pin configuration: Male pins, shrouded (4 side)
• Termination method: Solder
• Mounting type: Through hole

Electrical Compatibility Parameters:

• Voltage rating must meet or exceed the original specification (160 V UL minimum)
• Current rating must meet or exceed the original specification (6 A UL minimum)
• Operating temperature range must encompass or exceed the original range (-40°C ~ 105°C)

Mechanical Compatibility Parameters:

• Flammability rating must meet or exceed UL94 V-0
• Contact mating finish: Tin
• Physical dimensions must accommodate existing PCB footprints and mating connectors

The substitute part 1803303 (Phoenix Contact COMBICON MC series) meets all mandatory matching parameters and exceeds electrical specifications, making it a valid equivalent for this application.

Parameter Comparison

Engineering Selection Recommendations

EM359305HC (Eaton Electronics Division):

• Active product status with established supply chain
• Suitable for applications requiring RoHS non-compliant components
• UL94 V-0 flammability rating meets safety requirements
• Specified for 160 V / 6 A UL operation

1803303 (Phoenix Contact COMBICON MC):

• Active product status with higher inventory availability (3154 units vs. 784 units)
• ROHS3 compliant, meeting modern environmental regulations
• Exceeds electrical specifications: 300 V UL / 8 A UL and 250 V IEC / 8 A IEC
• UL94 V-0 flammability rating matches original specification
• Housing material is PBT (Polybutylene Terephthalate), a high-performance thermoplastic
• Moisture sensitivity level 1 (Unlimited) indicates superior environmental stability
• REACH unaffected status confirms regulatory compliance

Selection Basis: The 1803303 substitute is electrically and mechanically compatible with the EM359305HC. The substitute provides superior electrical ratings and improved regulatory compliance. Minor dimensional variations (contact tail length +0.016", insulation height +0.013") are within acceptable tolerances for standard PCB footprints and connector mating interfaces. Selection between these parts should be based on application-specific regulatory requirements, supply chain preferences, and inventory availability.

Frequently Asked Questions (FAQ)

Q: Can the Phoenix Contact 1803303 be used as a direct replacement for the Eaton EM359305HC?

A: Yes. Both components share identical pitch (0.150" / 3.81mm), position count (5), orientation (90° right angle), pin configuration (male, shrouded 4-side), and termination method (solder through-hole). The substitute meets or exceeds all electrical specifications and maintains equivalent flammability ratings.

Q: What are the key differences between these two parts?

A: The primary differences are: (1) Housing material—Eaton uses thermoplastic, Phoenix Contact uses PBT; (2) Electrical ratings—Phoenix Contact exceeds both UL and IEC specifications; (3) RoHS compliance—Phoenix Contact is ROHS3 compliant while Eaton is non-compliant; (4) Minor dimensional variations in contact tail length (0.016" difference) and insulation height (0.013" difference); (5) Inventory availability—Phoenix Contact has higher stock levels.

Q: Will the dimensional differences affect PCB compatibility?

A: The dimensional variations (contact tail length and insulation height) are minor and within standard manufacturing tolerances for terminal block headers. These differences do not affect PCB footprint compatibility or mating connector interfaces for standard applications.

Q: Which part should be selected for new designs?

A: Selection depends on regulatory requirements. For applications requiring RoHS compliance, the Phoenix Contact 1803303 is the appropriate choice. For legacy systems or applications specifically requiring non-compliant components, the Eaton EM359305HC remains available.

Q: Are there any electrical derating considerations when substituting?

A: No. The Phoenix Contact 1803303 exceeds the electrical specifications of the Eaton EM359305HC (300 V vs. 160 V UL; 8 A vs. 6 A UL). No derating is required, and the substitute operates within its rated specifications across the full operating temperature range (-40°C ~ 105°C).

Q: What is the significance of the REACH and MSL ratings?

A: The Phoenix Contact 1803303 carries REACH Unaffected status, confirming it contains no substances of very high concern. The MSL 1 (Unlimited) rating indicates the component has no moisture sensitivity limitations during storage or handling, providing superior reliability in varied environmental conditions compared to components with higher MSL ratings.