TFM-150-31-S-D Equivalent & Substitute Parts

Part Overview

The TFM-150-31-S-D is a shrouded vertical header connector from Samtec Inc.'s Tiger Eye™ TFM series. This through-hole rectangular connector features 100 positions arranged in 2 rows with 0.050" (1.27mm) pitch, designed for board-to-board or cable applications. The part is Active in product status and widely used in applications requiring reliable interconnection with push-pull fastening and gold-plated mating contacts. Identifying equivalent substitute parts ensures design flexibility, supply chain continuity, and component availability across manufacturing cycles.

Substiute Parts

TFM-150-31-S-D

Samtec Inc.In Stock: 1040TFM-150-31-S-D Datasheet

Current PartRFQ

TFM-150-21-S-D-A

Samtec Inc.In Stock: 814TFM-150-21-S-D-A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TFM-150-31-S-D are identified based on strict electrical and mechanical compatibility criteria. The following parameters must remain constant for a part to qualify as a direct substitute:

• Connector Type: Header
• Number of Positions: 100
• Number of Rows: 2
• Pitch - Mating: 0.050" (1.27mm)
• Row Spacing - Mating: 0.050" (1.27mm)
• Contact Type: Male Pin
• Mounting Type: Through Hole
• Shrouding: Shrouded - 4 Wall
• Fastening Type: Push-Pull
• Current Rating: 2.9A per Contact
• Voltage Rating: 275VAC
• Operating Temperature: -55°C ~ 125°C
• Material Flammability Rating: UL94 V-0
• RoHS Status: ROHS3 Compliant

Variations in insulation height, board guide features, or contact finish thickness do not affect functional interchangeability when these core parameters align.

Parameter Comparison

Engineering Selection Recommendations

Both the TFM-150-31-S-D and TFM-150-21-S-D-A are Active products from Samtec Inc.'s Tiger Eye™ TFM series and meet identical electrical and mechanical specifications for core connector functionality. Both parts are ROHS3 Compliant and carry EAR99 classification.

The primary difference between these parts is insulation height: the TFM-150-31-S-D features 0.435" (11.05mm) insulation height, while the TFM-150-21-S-D-A features 0.360" (9.14mm) insulation height. The TFM-150-21-S-D-A includes a board guide feature. These dimensional and feature variations do not affect electrical performance or contact integrity.

Selection between these parts depends on PCB layout constraints and mechanical mounting requirements. Both parts maintain identical current and voltage ratings, operating temperature range, and contact finish specifications. Inventory availability and lead time considerations may also influence part selection.

Frequently Asked Questions (FAQ)

Q: Can TFM-150-21-S-D-A be used as a direct replacement for TFM-150-31-S-D?

A: Yes. Both parts share identical electrical specifications, contact configuration, pitch, row spacing, and fastening mechanism. The difference in insulation height (0.435" versus 0.360") and the board guide feature on the TFM-150-21-S-D-A do not affect electrical interchangeability. PCB layout and mechanical clearance must be verified for the specific application.

Q: What is the significance of the insulation height difference?

A: Insulation height affects the physical profile of the connector on the PCB. The TFM-150-31-S-D has a taller insulation profile (11.05mm) compared to the TFM-150-21-S-D-A (9.14mm). This difference may impact board-to-board spacing, component placement, or enclosure fit. Verify mechanical clearance in your design before substitution.

Q: Does the board guide feature on TFM-150-21-S-D-A affect compatibility?

A: The board guide is a mechanical feature that aids in connector alignment during assembly. It does not affect electrical performance or contact integrity. If your design accommodates the board guide feature, it may provide assembly benefits without compromising functionality.

Q: Are both parts RoHS compliant?

A: Yes. Both TFM-150-31-S-D and TFM-150-21-S-D-A are ROHS3 Compliant and suitable for applications requiring RoHS certification.

Q: What is the current and voltage rating for these connectors?

A: Both parts are rated for 2.9A per contact and 275VAC. Operating temperature range is -55°C to 125°C for both parts.

Q: Are there any moisture sensitivity considerations?

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