EM257512VO Terminal Block Header Equivalent & Substitute Parts

Part Overview

The EM257512VO is a 12-position terminal block header manufactured by Eaton Electronics Division, part of the Euro-Mag EM2575 series. This component is a male pin, shrouded (2-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 910 units in stock. Terminal block headers serve as connection interfaces in industrial control systems, power distribution modules, and signal routing applications where reliable electrical connections and mechanical stability are required. Equivalent and substitute parts are necessary when the primary part becomes unavailable, when design requirements necessitate alternative shrouding configurations, or when pitch variations are acceptable within system specifications.

Key Parameters

Parameter	EM257512VO Value
Number of Positions	12
Pitch	0.200" (5.08mm)
Header Orientation	Vertical
Type	Header, Male Pins, Shrouded (2 Side)
Mounting Type	Through Hole
Termination Style	Solder
Voltage - UL	300 V
Current - UL	16 A
Operating Temperature	-40°C ~ 105°C
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
Contact Mating Finish	Tin
Housing Material	Thermoplastic

Substitute Part Grouping Explanation

Substitution logic for the EM257512VO is based on the following critical parameters that determine functional compatibility:

Primary Substitution Criteria:

Number of Positions: 12 (fixed requirement)
Header Orientation: Vertical (fixed requirement)
Mounting Type: Through Hole (fixed requirement)
Termination Style: Solder (fixed requirement)
Voltage - UL: 300 V minimum (fixed requirement)

Secondary Substitution Criteria (Allowable Variations):

Pitch: 0.200" (5.08mm) preferred; 0.197" (5.00mm) acceptable with mechanical verification
Shrouding Configuration: 2-side or 4-side shrouding both acceptable
Current Rating: 12 A to 16 A acceptable (EM257512VO rated 16 A UL)
Operating Temperature: -40°C minimum and 105°C minimum required
Material Flammability: UL94 V-0 required
RoHS Compliance: ROHS3 required

Substitute parts are grouped into two categories based on pitch specification: 5.08mm pitch parts (exact match to EM257512VO) and 5.00mm pitch parts (near-equivalent with minor mechanical tolerance considerations).

Parameter Comparison

Parameter	EM257512VO	0395316012	1-796636-2	1755833	EDSTLZ955/12
Manufacturer	Eaton	Molex	TE Connectivity	Phoenix Contact	On Shore Technology
Number of Positions	12	12	12	12	12
Pitch	0.200" (5.08mm)	0.200" (5.08mm)	0.200" (5.08mm)	0.200" (5.08mm)	0.200" (5.08mm)
Header Orientation	Vertical	Vertical	Vertical	Vertical	Vertical
Type	Header, Male Pins, Shrouded (2 Side)	Header, Male Pins, Shrouded (4 Side)	Header, Male Pins, Shrouded (4 Side)	Header, Male Pins, Shrouded (4 Side)	Header, Male Pins, Shrouded (4 Side)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Solder
Termination Style	Solder	Solder	Solder	Solder	Solder
Voltage - UL	300 V	300 V	300 V	300 V	300 V
Current - UL	16 A	15 A	15 A	12 A	Not Specified
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 110°C	Not Specified	-30°C ~ 105°C
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	Not Specified
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Contact Mating Finish	Tin	Tin	Tin	Tin	Not Specified
Inventory (Pcs)	910	873	983	5027	761

Engineering Selection Recommendations

Exact Pitch Match (5.08mm) - Primary Substitutes:

The Molex 0395316012, TE Connectivity 1-796636-2, Phoenix Contact 1755833, and On Shore Technology EDSTLZ955/12 all maintain the 0.200" (5.08mm) pitch specification of the EM257512VO. These parts are mechanically and electrically compatible for direct substitution in applications where the PCB layout and connector mating interfaces are designed for 5.08mm pitch spacing.

Molex 0395316012: Maintains 5.08mm pitch with 4-side shrouding. Current rating of 15 A is acceptable for applications not requiring the full 16 A capacity of the EM257512VO. ROHS3 compliant with 873 units in stock.
TE Connectivity 1-796636-2: Maintains 5.08mm pitch with 4-side shrouding. Operating temperature range extends to 110°C. Current rating of 15 A is acceptable. ROHS3 compliant with 983 units in stock.
Phoenix Contact 1755833: Maintains 5.08mm pitch with 4-side shrouding. Highest inventory availability at 5027 units. Current rating of 12 A requires verification for applications demanding 16 A capacity. ROHS3 compliant.
On Shore Technology EDSTLZ955/12: Maintains 5.08mm pitch with 4-side shrouding. ROHS3 compliant with 761 units in stock. Operating temperature minimum of -30°C is acceptable for most industrial applications.

Near-Pitch Match (5.00mm) - Secondary Substitutes:

The Molex 0395215012, TE Connectivity 1-282822-2, TE Connectivity 1-796642-2, Phoenix Contact 1753631, Phoenix Contact 1755600, and On Shore Technology EDSTL955/12 operate at 0.197" (5.00mm) pitch. These parts require mechanical verification to confirm PCB pad spacing compatibility, as the 0.08mm pitch difference may affect connector seating and electrical contact reliability depending on PCB design tolerances.

Compliance and Certification:

All recommended substitutes maintain ROHS3 compliance and UL94 V-0 flammability rating. All parts are rated for 300 V UL voltage specification. Current ratings vary between 12 A and 16 A; applications requiring the full 16 A capacity should prioritize the EM257512VO or Molex 0395215012 (15 A).

Shrouding Configuration:

The EM257512VO features 2-side shrouding. Substitute parts with 4-side shrouding provide enhanced mechanical protection and EMI shielding but may require verification of clearance in confined mounting spaces.

Frequently Asked Questions (FAQ)

Q: Can I substitute a 5.00mm pitch terminal block for the 5.08mm pitch EM257512VO?

A: Substitution of 5.00mm pitch parts (such as Molex 0395215012, TE Connectivity 1-282822-2, or Phoenix Contact 1753631) requires mechanical verification. The 0.08mm pitch difference is within typical PCB manufacturing tolerances but must be confirmed against your specific PCB design. Connector seating force and electrical contact reliability depend on pad spacing accuracy. Consult your PCB layout documentation before proceeding.

Q: What is the difference between 2-side and 4-side shrouding?

A: The EM257512VO features 2-side shrouding, which provides lateral protection for the male pins. Substitute parts with 4-side shrouding (Molex 0395316012, TE Connectivity 1-796636-2, Phoenix Contact 1755833, On Shore Technology EDSTLZ955/12) provide additional top and bottom protection, offering enhanced mechanical robustness and improved EMI shielding. Both configurations are electrically equivalent; selection depends on mechanical space constraints and environmental protection requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed in this document are ROHS3 compliant, matching the EM257512VO compliance status. All parts are suitable for applications requiring RoHS compliance.

Q: What is the current rating difference between the EM257512VO and substitute parts?

A: The EM257512VO is rated for 16 A (UL). Most substitute parts are rated for 12 A to 15 A. For applications requiring the full 16 A capacity, the EM257512VO or Molex 0395215012 (15 A) are preferred. For applications with current requirements of 12 A or less, all listed substitutes are acceptable.

Q: Which substitute part has the highest inventory availability?

A: Phoenix Contact 1755833 has the highest inventory with 5027 units in stock. This part maintains the 5.08mm pitch specification and is ROHS3 compliant. Current rating is 12 A.

Q: Can I use a substitute part with a different operating temperature range?

A: The EM257512VO operates from -40°C to 105°C. Substitute parts with extended upper temperature limits (such as TE Connectivity 1-796636-2 at -40°C to 110°C) are acceptable for all applications within the EM257512VO range. Parts with reduced lower temperature limits (such as On Shore Technology EDSTLZ955/12 at -30°C to 105°C) are acceptable for applications not requiring operation below -30°C. Verify your application's temperature requirements before selection.

Q: What is the contact tail length difference between the EM257512VO and substitutes?

A: The EM257512VO has a contact tail length of 0.177" (4.50mm). Substitute parts vary: Molex 0395316012 has 0.130" (3.30mm), TE Connectivity parts have 0.138" (3.50mm), Phoenix Contact parts have 0.154" (3.90mm), and On Shore Technology parts have 0.154" (3.90mm). Shorter tail lengths may affect solder joint formation on PCBs with specific pad designs. Verify PCB pad depth compatibility before substitution.

Q: Are all substitute parts suitable for solder termination?

A: Yes. All substitute parts listed are designed for solder termination and are compatible with standard PCB assembly processes. The EM257512VO and all substitutes use tin contact mating finish, ensuring consistent solder wetting characteristics.

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