A-TB350-OP07 Equivalent & Substitute Parts

Part Overview

The A-TB350-OP07 is a 7-position terminal block header manufactured by Assmann WSW Components. This component features male pins in an unshrouded configuration with 0.138" (4.60mm) vertical pitch and through-hole solder termination. The part is currently active in production with 794 units in stock. Terminal block headers of this specification are essential in applications requiring reliable electrical connections for multi-conductor wiring in industrial control systems, power distribution, and signal routing. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity.

Key Parameters

Parameter	Value
Number of Positions	7
Pitch	0.138" (4.60mm)
Header Orientation	Vertical
Type	Header, Male Pins, Unshrouded
Termination Style	Solder
Mounting Type	Through Hole
Voltage - UL	300 V
Current - UL	10 A
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
Contact Mating Finish	Tin

Substitute Part Grouping Explanation

Substitution eligibility for the A-TB350-OP07 is determined by strict alignment with the following core parameters:

Number of Positions: Must be 7
Pitch: Must be 0.138" (4.60mm)
Header Orientation: Must be Vertical
Type: Must be Header, Male Pins, Unshrouded
Termination Style: Must be Solder
Mounting Type: Must be Through Hole
Contact Mating Finish: Must be Tin
Material Flammability Rating: Must be UL94 V-0
RoHS Status: Must be ROHS3 Compliant

The identified substitute parts meet all mandatory substitution criteria. Variations in secondary parameters such as contact tail length, insulation height, housing material composition, and electrical ratings (current and voltage) are documented in the parameter comparison table to support engineering evaluation for specific application requirements.

Parameter Comparison

Parameter	A-TB350-OP07 (Assmann WSW)	1945148 (Phoenix Contact)	1986717-7 (TE Connectivity)
Manufacturer	Assmann WSW Components	Phoenix Contact	TE Connectivity AMP Connectors
Number of Positions	7	7	7
Pitch	0.138" (4.60mm)	0.138" (4.60mm)	0.138" (4.60mm)
Header Orientation	Vertical	Vertical	Vertical
Type	Header, Male Pins, Unshrouded	Header, Male Pins, Unshrouded	Header, Male Pins, Unshrouded
Termination Style	Solder	Solder	Solder
Mounting Type	Through Hole	Through Hole	Through Hole
Contact Mating Finish	Tin	Tin	Tin
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Voltage - UL	300 V	300 V	150 V
Current - UL	10 A	10 A	2 A
Current - IEC	Not specified	8 A	Not specified
Voltage - IEC	Not specified	250 V	Not specified
Contact Tail Length	0.138" (4.60mm)	0.150" (3.81mm)	0.138" (4.60mm)
Insulation Height	0.079" (2.00mm)	0.512" (13.00mm)	0.079" (2.00mm)
Housing Material	Thermoplastic	Polyamide (PA), Nylon	Polyamide (PA), Nylon
Contact Material	Brass	Not specified	Copper Alloy
Operating Temperature	-40°C ~ 115°C	Not specified	-40°C ~ 110°C
Series	Not specified	COMBICON PST	Not specified
Product Status	Active	Active	Active
Inventory	794 Pcs	18590 Pcs	1111 Pcs

Engineering Selection Recommendations

All three parts maintain active product status and ROHS3 compliance, supporting long-term availability and regulatory adherence. The A-TB350-OP07 and 1986717-7 share identical contact tail length (0.138" / 4.60mm) and insulation height (0.079" / 2.00mm), providing direct mechanical compatibility in existing PCB layouts. The 1945148 exhibits increased insulation height (0.512" / 13.00mm) and contact tail length (0.150" / 3.81mm), requiring layout verification before implementation.

Electrical rating differences are significant. The A-TB350-OP07 and 1945148 both support 300 V and 10 A under UL conditions. The 1986717-7 operates at reduced ratings of 150 V and 2 A, limiting its application scope to lower-power circuits. The 1945148 provides IEC certification data (8 A at 250 V), offering additional compliance documentation for international applications.

Selection should prioritize mechanical fit verification and electrical requirement alignment. The A-TB350-OP07 and 1986717-7 are preferred for space-constrained designs. The 1945148 is suitable for applications requiring higher insulation clearance or IEC compliance documentation.

Frequently Asked Questions (FAQ)

Q: Can 1945148 be used as a direct replacement for A-TB350-OP07 in existing designs?

A: The 1945148 meets all core substitution criteria but exhibits different mechanical dimensions. The increased insulation height (0.512" vs. 0.079") and contact tail length (0.150" vs. 0.138") require PCB layout verification. Electrical ratings are equivalent at 300 V and 10 A UL.

Q: What are the limitations of 1986717-7 compared to the main part?

A: The 1986717-7 operates at reduced electrical ratings (150 V and 2 A UL) compared to the A-TB350-OP07 (300 V and 10 A UL). Mechanical dimensions are identical, supporting direct PCB substitution. Application suitability depends on circuit power requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The A-TB350-OP07, 1945148, and 1986717-7 are all ROHS3 compliant, meeting environmental and regulatory requirements for restricted substance use.

Q: Which substitute part offers the best inventory availability?

A: The 1945148 (Phoenix Contact) has the highest inventory level at 18,590 units, followed by 1986717-7 at 1,111 units, and A-TB350-OP07 at 794 units.

Q: Do all parts support the same operating temperature range?

A: The A-TB350-OP07 operates from -40°C to 115°C. The 1986717-7 operates from -40°C to 110°C. Operating temperature data for 1945148 is not specified in available documentation.

Q: What is the difference in housing material between the parts?

A: The A-TB350-OP07 uses thermoplastic housing. Both 1945148 and 1986717-7 use polyamide (PA) nylon housing, offering enhanced mechanical properties and thermal stability.

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