B5B-PH-SM3-TB Equivalent & Substitute Parts

Part Overview

The B5B-PH-SM3-TB is a surface mount rectangular connector header manufactured by JST Sales America Inc., designed for board-to-cable/wire applications with 5 positions at 2.00mm pitch. This connector features shrouded 4-wall construction with solder termination and detent lock fastening. The part is currently classified as obsolete, making identification of equivalent and substitute components essential for ongoing design support and production continuity.

Substiute Parts

B5B-PH-SM3-TB

JST Sales America Inc.In Stock: 1187B5B-PH-SM3-TB Datasheet

Current PartRFQ

B5B-PH-SM4-TB

JST Sales America Inc.In Stock: 462075B5B-PH-SM4-TB Datasheet

DirectRFQ

292175-5

TE Connectivity AMP ConnectorsIn Stock: 4334292175-5 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the B5B-PH-SM3-TB is determined by the following critical parameters:

Primary Matching Criteria:

• Connector type (Header)
• Contact type (Male Pin)
• Pitch - Mating (0.079" / 2.00mm)
• Number of positions (5)
• Number of rows (1)
• Mounting type (Surface Mount)
• Shrouding configuration (Shrouded - 4 Wall)
• Termination method (Solder)
• Fastening type (Detent Lock)

Secondary Compatibility Parameters:

• Current rating (2A minimum)
• Voltage rating (100V minimum)
• Operating temperature range (-25°C ~ 85°C minimum)
• Material flammability rating (UL94 V-0)

The identified substitute parts maintain compatibility across all primary matching criteria. Variations in contact material, insulation material composition, and contact finish specifications do not affect functional interchangeability within the specified electrical and mechanical parameters.

Parameter Comparison

Engineering Selection Recommendations

B5B-PH-SM4-TB (JST Sales America Inc.) is the primary substitute for the obsolete B5B-PH-SM3-TB. Both parts are manufactured by JST and maintain identical mechanical and electrical specifications across all critical parameters. The B5B-PH-SM4-TB is currently in active production status with significantly higher inventory availability (462,020 units). This part achieves ROHS3 compliance, addressing regulatory requirements that the original part does not meet. The transition from tin-lead to tin contact finish and the use of PA6T nylon insulation material represent standard manufacturing evolution without functional impact on connector performance.

292175-5 (TE Connectivity AMP Connectors) serves as a cross-manufacturer substitute. This part maintains compatibility across all primary matching criteria and achieves ROHS3 compliance. Dimensional variations exist in contact length (0.177" vs. 0.130") and insulation height (0.307" vs. 0.260"), which may require PCB layout verification for mating connector clearance. The voltage rating of 125VAC exceeds the original specification. This option provides supply diversity and is suitable for applications where cross-manufacturer qualification is acceptable.

For new designs or production transitions, B5B-PH-SM4-TB is recommended due to identical form factor, active production status, and manufacturer continuity with the original design.

Frequently Asked Questions (FAQ)

Q: Can B5B-PH-SM4-TB be used as a direct replacement for B5B-PH-SM3-TB?

A: Yes. Both parts share identical connector type, contact configuration, pitch, position count, mounting method, shrouding, termination, and fastening specifications. The B5B-PH-SM4-TB is the active production equivalent of the obsolete B5B-PH-SM3-TB.

Q: What is the significance of the contact finish change from Tin-Lead to Tin?

A: The change from tin-lead to tin contact finish reflects industry-wide transition to lead-free materials driven by RoHS compliance requirements. This change does not affect electrical performance or mechanical interchangeability. The tin finish maintains equivalent contact resistance and mating durability.

Q: Are there dimensional differences between B5B-PH-SM4-TB and 292175-5?

A: Yes. The 292175-5 has a longer contact mating length (0.177" vs. 0.130") and greater insulation height (0.307" vs. 0.260"). These differences may affect mating connector clearance and PCB layout. Verify compatibility with mating connectors and available board space before selection.

Q: Does the insulation material change from PA46 to PA6T affect performance?

A: No. Both polyamide formulations meet the same UL94 V-0 flammability rating and operating temperature range. PA6T represents a material evolution with equivalent electrical and mechanical properties for this application.

Q: What is the impact of RoHS compliance status on part selection?

A: RoHS3 compliance is required for products sold into regulated markets. The B5B-PH-SM4-TB and 292175-5 both achieve ROHS3 compliance, while the original B5B-PH-SM3-TB does not. For new designs or production transitions, selection of a RoHS-compliant substitute is necessary to meet current regulatory requirements.

Q: Can 292175-5 be used in applications originally designed for B5B-PH-SM3-TB?

A: Functional compatibility exists across electrical and mechanical parameters. However, dimensional variations require verification that mating connectors and PCB layouts accommodate the larger contact length and insulation height. Cross-manufacturer qualification may be necessary depending on application requirements.

Q: What inventory considerations should guide part selection?

A: B5B-PH-SM4-TB has substantially higher inventory availability (462,020 units) compared to 292175-5 (4,309 units), supporting production continuity and supply chain stability. For high-volume applications, B5B-PH-SM4-TB is the preferred choice.