Phoenix Contact 1902770 Terminal Block Header - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 1902770 is a 5-position terminal block header with male pins, shrouded on 4 sides, featuring 0.200" (5.08mm) pitch and 90° right-angle orientation for through-hole mounting. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system maintenance and new design implementations. The COMBICON MSTBA series part remains in stock but requires evaluation against active product alternatives to ensure long-term supply chain viability.

Key Parameters

Parameter	Value
Number of Positions	5
Pitch	0.200" (5.08mm)
Header Orientation	90°, Right Angle
Type	Header, Male Pins, Shrouded (4 Side)
Mounting Type	Through Hole
Termination Style	Solder
Current - IEC	12A
Voltage - IEC	400 V
Material Flammability Rating	UL94 V-0
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the Phoenix Contact 1902770 is determined by strict equivalence across the following critical parameters:

Electrical Compatibility: Identical pitch (0.200"/5.08mm), number of positions (5), and header orientation (90° right angle)
Mechanical Compatibility: Same connector type (male pins, shrouded 4-side), mounting method (through hole), and termination style (solder)
Regulatory Compliance: UL94 V-0 flammability rating and RoHS compliance status
Voltage and Current Ratings: IEC voltage rating of 400V and IEC current rating of 12A per position

The Phoenix Contact 1954948 meets all substitution criteria as an active-status alternative within the COMBICON product family, offering identical electrical and mechanical specifications with updated housing material composition.

Parameter Comparison

Parameter	1902770 (Main Part)	1954948 (Substitute)
Manufacturer	Phoenix Contact	Phoenix Contact
Series	COMBICON MSTBA	COMBICON CCA
Product Status	Obsolete	Active
Number of Positions	5	5
Pitch	0.200" (5.08mm)	0.200" (5.08mm)
Header Orientation	90°, Right Angle	90°, Right Angle
Type	Header, Male Pins, Shrouded (4 Side)	Header, Male Pins, Shrouded (4 Side)
Mounting Type	Through Hole	Through Hole
Termination Style	Solder	Solder
Current - IEC	12A	12A per position
Voltage - IEC	400 V	400 V
Current - UL	15 A	10 A
Voltage - UL	300 V	300 V
Color	Black	Black
Contact Mating Finish	Tin	Tin
Material Flammability Rating	UL94 V-0	UL94 V-0
RoHS Status	RoHS Compliant	RoHS Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
Housing Material	Polyamide (PA), Nylon	Liquid Crystal Polymer (LCP)
Contact Tail Length	0.114" (2.90mm)	0.102" (2.60mm)
Insulation Height	0.350" (8.89mm)	0.339" (8.61mm)

Engineering Selection Recommendations

The Phoenix Contact 1954948 is a direct functional equivalent for applications currently using the 1902770. The substitute part maintains identical electrical performance under IEC standards (12A at 400V) and meets the same regulatory requirements (UL94 V-0, RoHS compliant). The transition from polyamide to liquid crystal polymer housing material in the 1954948 represents an engineering improvement in thermal stability and dimensional consistency, with no adverse impact on connector performance.

The primary distinction is the UL current rating, where the 1954948 is rated at 10A compared to the 1902770's 15A. Applications operating within 10A UL limits experience no functional constraint. For applications requiring UL ratings above 10A, the 1902770 remains the specified component, though its obsolete status necessitates long-term supply planning.

The 1954948 active product status ensures continued availability and manufacturing support, making it the preferred selection for new designs and ongoing production requiring terminal block headers in this configuration.

Frequently Asked Questions (FAQ)

Q: Can the 1954948 be used as a direct replacement for the 1902770 in existing designs?

A: Yes, for applications operating within the 1954948's UL current rating of 10A. Both parts share identical pitch (5.08mm), position count (5), orientation (90° right angle), and IEC electrical ratings (12A, 400V). The housing material difference (LCP vs. polyamide) does not affect electrical or mechanical compatibility.

Q: What is the significance of the housing material change from polyamide to liquid crystal polymer?

A: Liquid crystal polymer offers improved thermal stability and dimensional consistency compared to polyamide. This material upgrade does not reduce performance; it represents a refinement in the product design. Both materials meet UL94 V-0 flammability requirements.

Q: Are there dimensional differences that affect PCB layout or mating connector design?

A: Minor dimensional variations exist. The 1954948 has a contact tail length of 0.102" (2.60mm) versus 0.114" (2.90mm) for the 1902770, and insulation height of 0.339" (8.61mm) versus 0.350" (8.89mm). These differences are within typical manufacturing tolerances and do not require PCB redesign for standard applications.

Q: Why is the 1902770 classified as obsolete?

A: The 1902770 belongs to the COMBICON MSTBA series, which has been superseded by the COMBICON CCA series (represented by the 1954948). Phoenix Contact has transitioned production to the newer series, making the 1902770 unavailable for new orders.

Q: What is the difference in UL current ratings between these parts?

A: The 1902770 is rated for 15A under UL standards, while the 1954948 is rated for 10A. Both meet the IEC standard of 12A per position. Selection depends on application requirements; if UL compliance at 15A is mandatory, the 1902770 specification must be maintained.

Q: Are both parts RoHS compliant?

A: Yes, both the 1902770 and 1954948 are RoHS compliant with MSL rating of 1 (unlimited moisture sensitivity level), indicating no special storage or handling requirements.

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