TSM9434CS RLG P-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The TSM9434CS RLG is a P-Channel Metal Oxide Semiconductor Field Effect Transistor (MOSFET) rated for -20V drain-to-source voltage with a continuous drain current of 6.4A at 25°C. This device is packaged in an 8-SOIC surface mount configuration and is designed for applications requiring moderate power dissipation up to 2.5W. The main part number TSM9434CS RLG carries an obsolete product status, necessitating identification of active equivalent alternatives to ensure design continuity and procurement availability for new production runs and ongoing support.

Substiute Parts

TSM9434CS RLG

Taiwan Semiconductor CorporationIn Stock: 736TSM9434CS RLG Datasheet

Current PartRFQ

TSM9434CS

Taiwan Semiconductor CorporationIn Stock: 4295TSM9434CS Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete TSM9434CS RLG is determined by strict electrical and mechanical parameter matching across the following critical specifications:

Electrical Parameters:

• FET Type: P-Channel topology
• Technology: MOSFET (Metal Oxide) construction
• Drain to Source Voltage (Vdss): 20V rating
• Continuous Drain Current (Id): 6.4A at 25°C
• On-State Resistance (Rds On): 40mOhm maximum at specified conditions
• Gate Threshold Voltage (Vgs(th)): 1V maximum at 250µA
• Gate Charge (Qg): 19nC maximum at 4.5V
• Maximum Gate Voltage (Vgs): ±8V
• Input Capacitance (Ciss): 1020pF maximum at 10V
• Power Dissipation: 2.5W maximum
• Operating Temperature Range: -55°C to 150°C

Mechanical Parameters:

• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (0.154", 3.90mm Width)

Compliance Parameters:

• RoHS Status: ROHS3 Compliant
• REACH Status: REACH Unaffected

Substitute parts must match all electrical parameters exactly and maintain identical mechanical packaging to ensure direct board-level compatibility without design modification.

Parameter Comparison

Engineering Selection Recommendations

The TSM9434CS (Tape & Reel format) is the direct parametric equivalent to the obsolete TSM9434CS RLG. All electrical specifications, mechanical dimensions, and compliance certifications are identical between the two part numbers.

Selection Basis:

The substitute part TSM9434CS carries an Active product status, ensuring ongoing manufacturer support, availability, and compliance with current regulatory requirements. Both the main part and substitute maintain ROHS3 compliance and REACH unaffected status, confirming environmental and regulatory alignment.

The primary distinction between the two part numbers is the packaging format: the main part is supplied in bulk configuration, while the substitute is supplied in Tape & Reel (TR) format. This packaging difference does not affect electrical performance or mechanical compatibility on the printed circuit board. The 8-SOIC package dimensions remain constant at 0.154" width (3.90mm), ensuring identical board-level placement and soldering characteristics.

For new production designs and ongoing procurement, the TSM9434CS in Tape & Reel format is the appropriate selection, providing equivalent electrical performance with the advantage of active product status and standard automated assembly compatibility.

Frequently Asked Questions (FAQ)

Q: Can the TSM9434CS (Tape & Reel) be used as a direct replacement for the TSM9434CS RLG?

A: Yes. All electrical parameters, mechanical dimensions, and compliance certifications are identical. The only difference is the packaging format (Tape & Reel versus bulk). Both parts are functionally equivalent at the circuit level.

Q: What is the significance of the packaging format difference between bulk and Tape & Reel?

A: Packaging format affects supply chain logistics and automated assembly processes. Tape & Reel format is standard for high-volume surface mount assembly. Bulk format is typically used for lower-volume or manual assembly operations. The actual component performance and board-level compatibility remain unchanged.

Q: Are there any thermal or electrical performance differences between the two part numbers?

A: No. Both parts share identical thermal characteristics (2.5W maximum power dissipation, -55°C to 150°C operating range) and electrical specifications (20V Vdss, 6.4A continuous drain current, 40mOhm Rds On).

Q: Why is the main part number listed as obsolete?

A: Product obsolescence typically reflects manufacturer discontinuation of specific packaging or supply formats. The TSM9434CS in Tape & Reel format remains in active production, providing continuity for the underlying device technology.

Q: Will the TSM9434CS work in existing circuit designs using the TSM9434CS RLG?

A: Yes. The identical electrical specifications, gate charge characteristics, input capacitance, and operating temperature range ensure functional compatibility in all circuit applications. No design modifications are required.

Q: Are both parts RoHS compliant?

A: Yes. Both the TSM9434CS RLG and TSM9434CS are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.

Q: What is the gate charge specification, and why is it important?

A: Gate charge (Qg) is 19nC maximum at 4.5V. This parameter determines the switching speed and gate drive requirements. Identical gate charge between the main part and substitute ensures equivalent switching performance in gate driver circuits.

Q: Can the TSM9434CS handle the same current levels as the TSM9434CS RLG?

A: Yes. Both parts are rated for 6.4A continuous drain current at 25°C with identical on-state resistance of 40mOhm at 6.4A and 4.5V gate-source voltage.