B6B-EH-A Equivalent & Substitute Parts

Part Overview

The B6B-EH-A is an active rectangular connector header manufactured by JST Sales America Inc. This through-hole vertical header features 6 positions with 2.5mm pitch and is designed for board-to-cable/wire applications. The connector employs shrouded 3-wall design with friction lock fastening and supports both press-fit and solder termination methods. Finding equivalent substitute parts is necessary when the primary part is unavailable, when inventory constraints require alternative sourcing, or when design flexibility permits component standardization across multiple suppliers.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Number of Positions	6
Pitch - Mating	0.098" (2.50mm)
Mounting Type	Through Hole
Shrouding	Shrouded - 3 Wall
Fastening Type	Friction Lock
Current Rating	3A
Voltage Rating	250V
Operating Temperature	-25°C ~ 85°C
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the B6B-EH-A are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Connector Type & Contact Configuration: Header with male pin contacts
Position Count & Pitch: 6 positions at 0.098" (2.50mm) mating pitch
Mounting & Termination: Through-hole mounting with board-to-cable/wire style
Shrouding & Fastening: Shrouded 3-wall design with friction lock mechanism
Electrical Ratings: 3A current capacity and 250V voltage rating
Environmental Compliance: UL94 V-0 flammability rating and ROHS3 compliance
Operating Range: -25°C to 85°C temperature specification

The substitute parts 25SH-C-06-TS (Adam Tech) and 440052-6 (TE Connectivity) meet all critical parameters within acceptable engineering tolerances for direct substitution.

Parameter Comparison

Parameter	B6B-EH-A (JST)	25SH-C-06-TS (Adam Tech)	440052-6 (TE Connectivity)
Connector Type	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin
Number of Positions	6	6	6
Pitch - Mating	0.098" (2.50mm)	0.098" (2.50mm)	0.098" (2.50mm)
Number of Rows	1	1	1
Mounting Type	Through Hole	Through Hole	Through Hole
Shrouding	Shrouded - 3 Wall	Shrouded - 3 Wall	Shrouded - 3 Wall
Fastening Type	Friction Lock	Friction Lock	Friction Lock
Insulation Height	0.236" (6.00mm)	0.236" (6.00mm)	0.236" (6.00mm)
Contact Shape	Square	Square	Square
Contact Finish - Mating	Tin	Tin	Tin
Contact Material	Brass	Brass	Brass
Operating Temperature	-25°C ~ 85°C	-25°C ~ 85°C	-25°C ~ 85°C
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0
Current Rating	3A	3A	3A
Voltage Rating	250V	250VAC	250V
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

All three parts—B6B-EH-A, 25SH-C-06-TS, and 440052-6—carry active product status and meet ROHS3 compliance requirements. The 440052-6 from TE Connectivity offers additional REACH Unaffected certification. Selection between these parts should be based on availability, lead time, and termination method preference. The B6B-EH-A and 440052-6 both support press-fit and solder termination, while the 25SH-C-06-TS uses kinked pin and solder termination. All parts maintain identical electrical ratings, operating temperature ranges, and mechanical compatibility for direct substitution in board-to-cable/wire applications.

Frequently Asked Questions (FAQ)

Q: Can 25SH-C-06-TS replace B6B-EH-A in existing designs?

A: Yes. Both connectors share identical mating pitch (2.50mm), position count (6), shrouding configuration (3-wall), and electrical ratings (3A, 250V). The primary difference is termination method: 25SH-C-06-TS uses kinked pins versus B6B-EH-A's press-fit pins. PCB footprint compatibility must be verified for kinked pin geometry.

Q: What are the key differences between 440052-6 and B6B-EH-A?

A: Both parts are functionally equivalent with identical mating pitch, position count, shrouding, and electrical specifications. The 440052-6 is manufactured by TE Connectivity under the High Performance Interconnect (HPI) series and includes REACH Unaffected certification. Contact length specifications differ slightly (440052-6: 0.136" mating, 0.134" post versus B6B-EH-A: 0.130" mating, 0.126" post), but both maintain the same 0.236" insulation height and 8.1mm stacking height compatibility.

Q: Are these connectors suitable for automotive applications?

A: The 440052-6 explicitly lists automotive applications. The B6B-EH-A and 25SH-C-06-TS do not specify automotive applications in their documentation. For automotive use, 440052-6 is the qualified choice.

Q: What is the difference between 250V and 250VAC voltage ratings?

A: The 25SH-C-06-TS specifies 250VAC (alternating current), while B6B-EH-A and 440052-6 specify 250V (typically DC or general rating). For AC applications, 25SH-C-06-TS provides explicit AC rating confirmation. For DC or mixed-signal applications, all three parts are suitable.

Q: Can these connectors be used interchangeably on the same PCB?

A: Direct PCB interchangeability depends on termination method compatibility. B6B-EH-A and 440052-6 use press-fit termination and share compatible footprints. The 25SH-C-06-TS uses kinked pin termination, which requires different PCB hole sizing and may not be directly interchangeable without footprint modification.

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