BM04B-PASS-TFT Equivalent & Substitute Parts

Part Overview

The BM04B-PASS-TFT is a surface mount rectangular connector header manufactured by JST Sales America Inc. in the PA series. This 4-position connector operates at 2.00mm pitch and is designed for board-to-cable/wire applications with solder termination. The part is currently active in production with full inventory availability. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across connector pitch, position count, mounting type, termination method, and environmental ratings.

Key Parameters

Parameter	Value
Manufacturer Part Number	BM04B-PASS-TFT
Manufacturer	JST Sales America Inc.
Category	Rectangular Connectors
Series	PA
Connector Type	Header
Contact Type	Male Pin
Number of Positions	4
Pitch - Mating	0.079" (2.00mm)
Mounting Type	Surface Mount
Termination	Solder
Current Rating	3A
Voltage Rating	250V
Operating Temperature	-25°C ~ 85°C
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the BM04B-PASS-TFT is determined by strict equivalence across the following critical parameters:

Pitch - Mating: 0.079" (2.00mm)
Number of Positions: 4
Connector Type: Header
Contact Type: Male Pin
Mounting Type: Surface Mount
Termination: Solder
Current Rating: 3A
Voltage Rating: 250V
Operating Temperature Range: -25°C ~ 85°C
Material Flammability Rating: UL94 V-0
RoHS Compliance Status

The substitute part BM04B-PASS-1-TFT maintains all critical electrical and mechanical parameters required for direct substitution. Both parts are manufactured by JST Sales America Inc. within the PA series and share identical connector specifications, contact materials, and environmental ratings.

Parameter Comparison

Parameter	BM04B-PASS-TFT	BM04B-PASS-1-TFT	Match
Manufacturer	JST Sales America Inc.	JST Sales America Inc.	Yes
Series	PA	PA	Yes
Connector Type	Header	Header	Yes
Contact Type	Male Pin	Male Pin	Yes
Number of Positions	4	4	Yes
Pitch - Mating	0.079" (2.00mm)	0.079" (2.00mm)	Yes
Mounting Type	Surface Mount	Surface Mount	Yes
Termination	Solder	Solder	Yes
Fastening Type	Locking Ramp	Locking Ramp	Yes
Insulation Height	0.350" (8.89mm)	0.350" (8.89mm)	Yes
Contact Shape	Square	Square	Yes
Contact Finish - Mating	Tin	Tin	Yes
Contact Finish - Post	Tin	Tin	Yes
Contact Material	Copper Alloy	Copper Alloy	Yes
Insulation Material	Polyamide (PA), Nylon	Polyamide (PA), Nylon	Yes
Current Rating	3A	3A	Yes
Voltage Rating	250V	250V	Yes
Mated Stacking Heights	11.1mm, 16mm, 16.2mm	11.1mm, 16mm, 16.2mm	Yes
Operating Temperature	-25°C ~ 85°C	-25°C ~ 85°C	Yes
Material Flammability Rating	UL94 V-0	UL94 V-0	Yes
Insulation Color	Natural	Natural	Yes
RoHS Status	ROHS3 Compliant	RoHS Compliant	Yes
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Yes
Product Status	Active	Active	Yes
Features	Pick and Place, Solder Retention	Board Guide, Pick and Place, Solder Retention	Compatible

Engineering Selection Recommendations

Both BM04B-PASS-TFT and BM04B-PASS-1-TFT are active production parts from JST Sales America Inc. with full RoHS compliance and identical electrical specifications. Selection between these parts is based on application requirements:

The BM04B-PASS-TFT provides standard 4-position header functionality with pick-and-place and solder retention features. The BM04B-PASS-1-TFT includes an additional board guide feature while maintaining all other specifications. Both parts meet UL94 V-0 flammability requirements and operate across the -25°C to 85°C temperature range with 3A current capacity at 250V.

For applications requiring mechanical alignment assistance during assembly, the board guide feature of BM04B-PASS-1-TFT may provide additional process control. For standard applications without this requirement, either part satisfies the electrical and mechanical interface specifications.

Frequently Asked Questions (FAQ)

Q: Can BM04B-PASS-1-TFT replace BM04B-PASS-TFT in existing designs?

A: Yes. Both parts maintain identical pitch (2.00mm), position count (4), contact type (male pin), mounting method (surface mount), termination (solder), current rating (3A), voltage rating (250V), and operating temperature range (-25°C to 85°C). The primary difference is the addition of a board guide feature in BM04B-PASS-1-TFT, which does not affect electrical compatibility.

Q: What is the significance of the board guide feature in BM04B-PASS-1-TFT?

A: The board guide is a mechanical feature that assists in component placement and alignment during surface mount assembly. It does not alter electrical performance or mating characteristics and is compatible with standard PCB layouts designed for the base BM04B-PASS-TFT.

Q: Are both parts available in the same packaging format?

A: Yes. Both BM04B-PASS-TFT and BM04B-PASS-1-TFT are supplied in Tape & Reel (TR) packaging suitable for automated assembly processes.

Q: Do these parts have different RoHS compliance levels?

A: BM04B-PASS-TFT is ROHS3 compliant, while BM04B-PASS-1-TFT is RoHS compliant. Both meet RoHS requirements; ROHS3 represents a more recent compliance certification standard.

Q: What is the moisture sensitivity level for these connectors?

A: Both parts have Moisture Sensitivity Level (MSL) 1, indicating unlimited shelf life without special moisture control measures during storage and handling.

Q: Are the mated stacking heights identical between the two parts?

A: Yes. Both parts support identical mated stacking heights of 11.1mm, 16mm, and 16.2mm, ensuring compatibility with standard connector receptacles and mating components.

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