A-TB350-OP08 Terminal Block Header Equivalent & Substitute Parts

Part Overview

The A-TB350-OP08 is an 8-position terminal block header manufactured by Assmann WSW Components, designed for vertical through-hole mounting with 4.6mm pitch spacing. This component is classified as a male pin, unshrouded header suitable for solder termination applications. The part maintains active product status with 805 units currently in stock.

Terminal block headers of this specification are essential in applications requiring reliable electrical connections with standardized pitch spacing and voltage/current ratings. Substitute parts become necessary when primary component availability is limited, when design requirements permit alternative housing materials, or when supply chain optimization is required.

Key Parameters

Parameter	Value
Number of Positions	8
Pitch	0.138" (4.60mm)
Header Orientation	Vertical
Termination Style	Solder
Mounting Type	Through Hole
Type	Header, Male Pins, Unshrouded
Voltage - UL	300 V
Current - UL	10 A
Operating Temperature	-40°C ~ 115°C
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the A-TB350-OP08 is determined by strict alignment with the following critical parameters:

Position Count & Pitch: Substitute parts must maintain 8 positions with 0.138" (4.60mm) pitch spacing to ensure mechanical and electrical compatibility with mating connectors and PCB layouts.
Orientation & Mounting: Vertical through-hole mounting configuration is mandatory for form factor compatibility.
Electrical Ratings: Substitute parts must meet or exceed UL voltage (300 V) and current (10 A) specifications to maintain circuit safety margins.
Termination Method: Solder termination is required for compatibility with standard PCB assembly processes.
Compliance Standards: RoHS3 compliance and UL94 V-0 flammability rating are non-negotiable for regulated applications.

The Phoenix Contact 1945151 qualifies as a direct substitute based on these parameters. While minor variations exist in contact tail length (0.150" vs. 0.138"), insulation height (0.512" vs. 0.079"), and housing material composition (Polyamide/Nylon vs. Thermoplastic), these differences do not compromise functional substitution when the core electrical and mechanical requirements are met.

Parameter Comparison

Parameter	A-TB350-OP08 (Assmann)	1945151 (Phoenix Contact)
Manufacturer	Assmann WSW Components	Phoenix Contact
Series	-	COMBICON PST
Number of Positions	8	8
Pitch	0.138" (4.60mm)	0.138" (4.60mm)
Header Orientation	Vertical	Vertical
Type	Header, Male Pins, Unshrouded	Header, Male Pins, Unshrouded
Termination Style	Solder	Solder
Mounting Type	Through Hole	Through Hole
Voltage - UL	300 V	300 V
Current - UL	10 A	10 A
Voltage - IEC	-	250 V
Current - IEC	-	8 A
Operating Temperature	-40°C ~ 115°C	-
Contact Mating Finish	Tin	Tin
Material Flammability Rating	UL94 V-0	UL94 V-0
Contact Tail Length	0.138" (4.60mm)	0.150" (3.81mm)
Insulation Height	0.079" (2.00mm)	0.512" (13.00mm)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active

Engineering Selection Recommendations

Both the A-TB350-OP08 and 1945151 maintain active product status with full RoHS3 compliance and UL94 V-0 flammability certification. Selection between these components should be based on:

A-TB350-OP08 (Assmann WSW Components): Select when the lower insulation height (0.079") and shorter contact tail length (0.138") are required for space-constrained PCB layouts. Current inventory of 805 units supports immediate availability for production schedules.

1945151 (Phoenix Contact COMBICON PST): Select when the higher insulation height (0.512") and extended contact tail length (0.150") provide design advantages for specific mounting configurations or when IEC electrical ratings (250 V / 8 A) are specified in design documentation. Inventory of 5349 units ensures sustained supply availability.

Both components satisfy UL electrical requirements (300 V / 10 A) and maintain equivalent solder termination compatibility with standard PCB assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the 1945151 be used as a direct replacement for the A-TB350-OP08 in existing designs?

A: Yes, provided that the design accommodates the dimensional differences. The 1945151 features a taller insulation height (0.512" vs. 0.079") and longer contact tail (0.150" vs. 0.138"). PCB footprint spacing and clearance requirements must be verified before substitution.

Q: Are there electrical performance differences between these two parts?

A: Both components meet the same UL electrical specifications (300 V / 10 A). The 1945151 additionally provides IEC ratings (250 V / 8 A). For applications requiring only UL compliance, electrical performance is equivalent.

Q: What is the significance of the different housing materials?

A: The A-TB350-OP08 uses Thermoplastic housing, while the 1945151 uses Polyamide (PA) Nylon. Both materials achieve UL94 V-0 flammability rating. Material selection does not affect electrical or mechanical substitution compatibility.

Q: Do both parts use the same contact material and finish?

A: Both components feature tin contact mating finish. The A-TB350-OP08 specifies brass contact material; the 1945151 contact material is not specified in available documentation. Tin plating ensures equivalent solder joint reliability for both parts.

Q: What is the operating temperature range for the 1945151?

A: Operating temperature range for the 1945151 is not specified in available documentation. The A-TB350-OP08 operates from -40°C to 115°C. For applications requiring confirmed temperature specifications, contact the manufacturer directly.

Q: Are both parts suitable for automated PCB assembly?

A: Yes. Both components are through-hole solder termination parts compatible with standard wave soldering and selective soldering processes used in automated PCB assembly.

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