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Home > Products > Discrete Semiconductor Products > Transistors > FETs, MOSFETs > FETs, MOSFETs

Infineon Technologies BSP321PH6327XTSA1

Name: BSP321PH6327XTSA1
Brand: Infineon Technologies
SKU: BSP321PH6327XTSA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BSP321PH6327XTSA1

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

Package:: TO-261-4, TO-261AA

Datasheet:: BSP321PH6327XTSA1.pdf

Description:: MOSFET P-CH 100V 980MA SOT223-4

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Product details

Overview

BSP321PH6327XTSA1 from Infineon Technologies is a P-channel enhancement-mode SIPMOS® small-signal MOSFET in PG-SOT-223 package, rated for -100 V V_DS, 900 mΩ R_DS(on) at V_GS = -10 V and I_D = -0.98 A, avalanche-rated, AEC-Q101 qualified, and RoHS-compliant - used in automotive load switching and industrial power management circuits.

For engineers reviewing the BSP321PH6327XTSA1 datasheet, BSP321PH6327XTSA1 pinout, BSP321PH6327XTSA1 application, or BSP321PH6327XTSA1 equivalent, key selection criteria include its -100 V breakdown voltage, -0.98 A continuous drain current, 689–900 mΩ on-resistance, -2.1 to -4.0 V gate threshold, and PG-SOT-223 thermal performance with 70 K/W R_thJA under 6 cm² copper cooling.

Technical Context

This device operates as a normally-off P-channel MOSFET with fixed gate threshold (V_GS(th) = -2.1 to -4.0 V), designed for low-side switching where gate drive is referenced to ground and source is connected to positive rail. Its avalanche rating (E_AS = 57 mJ) supports inductive load handling without external snubbers.

Thermal design relies on the PG-SOT-223 package's exposed drain pad, enabling 70 K/W junction-to-ambient resistance with 6 cm² PCB copper area. Dynamic parameters - including C_iss = 240–319 pF, t_r = 4.4–6.6 ns, and Q_g = 9–12 nC - support efficient 100 kHz–1 MHz switching in compact DC-DC and motor control stages.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS Rating	-100 V - supports 24 V/48 V automotive and industrial bus systems with margin against transients.
R_DS(on) Max	900 mΩ at V_GS = -10 V, I_D = -0.98 A - enables <1 W conduction loss at rated current.
I_D Continuous	-0.98 A at T_C = 25 °C - suitable for low-power solenoid, LED, and sensor supply switching.
V_GS(th)	-2.1 to -4.0 V - ensures reliable turn-on with standard 5 V or 3.3 V logic-level gate drivers.
E_AS	57 mJ - withstands single-pulse inductive energy without failure in relay or motor coil drives.
R_thJA	70 K/W with 6 cm² copper - allows ~260 °C/W junction-to-case path when mounted on minimal PCB area.
C_iss	240–319 pF - determines gate drive strength requirement and impacts switching speed in high-frequency PWM.
Q_g	9–12 nC - defines total gate charge needed for full turn-on; compatible with low-current microcontroller GPIOs via buffer.

Pinout & Package

PG-SOT-223 package with three terminals: Drain (pin 1, tab), Source (pin 2), Gate (pin 3). The large exposed drain pad provides primary thermal path to PCB copper.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (Drain Tab)	Main current-carrying terminal, electrically tied to die drain	Must be soldered to ≥6 cm² copper pour for thermal compliance; serves as heatsink interface.
Pin 2 (Source)	Reference node for gate drive and current return path	Connected to system ground or positive rail depending on low/high-side topology; defines V_GS reference.
Pin 3 (Gate)	Control input for channel conduction	High-impedance node requiring <12 nC charge; sensitive to ESD (Class HBM 1A, 250–500 V).

Key Features

Feature	Design Value
Avalanche-rated operation	Guarantees single-pulse ruggedness up to 57 mJ without derating - eliminates need for external clamping in relay drivers.
AEC-Q101 qualification	Validated for automotive temperature range (-55 to +150 °C) and reliability stress tests - approved for under-hood ECUs.
Pb-free & halogen-free	Complies with RoHS Directive 2011/65/EU and IEC 61249-2-21 - meets Tier-1 automotive sourcing requirements.
Low gate charge	Q_g = 9–12 nC enables fast switching with <1 mA average gate drive current - reduces driver IC cost and size.
Enhancement-mode P-channel	Normally-off behavior ensures fail-safe operation during MCU reset or gate floating - critical for safety-critical loads.

Applications

Automotive Body Control Module

Industrial Sensor Power Switching

Use Scenario: Controlling 12 V solenoid valves and lamp loads in BCM sub-assemblies.

IC Role / Device Role / Timing Role: Low-side switch managing load current up to 0.98 A with integrated avalanche protection.

Use Value: Eliminates external flyback diode and reduces BOM count by leveraging built-in reverse diode (V_SD = 0.84–1.2 V) and 57 mJ E_AS.

Use Scenario: Sequenced power enable for analog sensor rails (e.g., pressure, temperature) in PLC I/O modules.

IC Role / Device Role / Timing Role: Precision-controlled P-channel switch with tight V_GS(th) distribution (-2.1 to -4.0 V) for consistent turn-on timing.

Use Value: Enables deterministic power-up sequencing using 3.3 V GPIOs without level-shifting, reducing layout complexity.

LED Lighting Driver

Power Supply OR-ing Circuit

Use Scenario: Dimmable 24 V LED string switching in commercial lighting fixtures.

IC Role / Device Role / Timing Role: PWM-controlled P-MOSFET with 4.4–6.6 ns rise time and low C_iss for clean dimming waveforms.

Use Value: Supports >100 kHz PWM without significant switching loss (Q_g = 9–12 nC), improving efficiency vs. bipolar alternatives.

Use Scenario: Redundant 48 V DC input OR-ing in telecom power shelves.

IC Role / Device Role / Timing Role: Reverse-polarity protected P-channel switch with low R_DS(on) (689–900 mΩ) minimizing insertion loss.

Use Value: Achieves <0.5 V drop at 0.98 A, outperforming Schottky diodes while eliminating forward voltage penalty.

Equivalent & Alternatives

The following parts are listed as comparable options for similar P-channel MOSFET switching applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
DMG2305UX-13	V_DS = -20 V, R_DS(on) = 45 mΩ @ -4.5 V - lower voltage, much lower on-resistance	Not suitable for 48 V+ systems; limited to 5–12 V logic-supply domains	Select only for low-voltage, high-current (<2 A) consumer applications where -100 V rating is unnecessary.
IPD250N10N3G	V_DS = -100 V, R_DS(on) = 250 mΩ @ -10 V - higher current (2.5 A), TO-252 package	Larger footprint and higher thermal mass; requires more PCB area and heatsinking	Choose when >1 A continuous current or higher power dissipation (>2 W) is required; not drop-in for SOT-223 space-constrained designs.

Compared with DMG2305UX-13 and IPD250N10N3G, BSP321PH6327XTSA1 uniquely balances -100 V ruggedness, SOT-223 form factor, and AEC-Q101 qualification - making it optimal for space-limited automotive and industrial 24–48 V load switches where reliability and thermal manageability are prioritized over ultra-low R_DS(on).

Availability

BSP321PH6327XTSA1 is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor power switching, and LED lighting drivers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for BSP321PH6327XTSA1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs, with global manufacturing and quality certification to ISO/TS 16949 and AEC standards.

The BSP321P belongs to Infineon's SIPMOS® small-signal MOSFET product line, engineered for robust, low-power switching in automotive and industrial environments where AEC-Q101 qualification, avalanche capability, and thermal efficiency in compact packages are essential.

FAQ

What is the maximum safe operating voltage for BSP321PH6327XTSA1?

The absolute maximum drain-source voltage is -100 V, verified per JEDEC JESD78 testing. Operation above -80 V is permitted only with strict derating of I_D and ambient temperature per the SOA curve on page 4 of the datasheet. Transient spikes beyond -100 V must be clamped externally, as avalanche energy is limited to 57 mJ per pulse.

Can BSP321PH6327XTSA1 be driven directly from a 3.3 V microcontroller GPIO?

Yes - its V_GS(th) range of -2.1 to -4.0 V ensures turn-on with 3.3 V logic when configured as a high-side switch (source tied to V_CC). However, full enhancement (R_DS(on) ≤ 900 mΩ) requires V_GS ≤ -10 V; for 3.3 V drive, expect higher on-resistance (~2–3 Ω) and reduced current capability.

Does BSP321PH6327XTSA1 include an integrated body diode, and what are its ratings?

Yes - it features a monolithic parasitic body diode with I_S = -0.98 A continuous, I_S,pulse = -3.9 A, V_SD = 0.84–1.2 V at I_F = 0.98 A and T_j = 25 °C, and t_rr = 47 ns. This diode supports freewheeling in inductive loads but is not optimized for high-frequency rectification.

Is the PG-SOT-223 package lead-free and compatible with standard reflow profiles?

Yes - BSP321PH6327XTSA1 uses Pb-free lead plating and complies with RoHS Directive 2011/65/EU. It is qualified for standard SnAgCu reflow per IPC/JEDEC J-STD-020, with peak temperature up to 260 °C and 60-second duration above 217 °C, matching typical Class 3 assembly requirements.

BSP321PH6327XTSA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: SIPMOS™

Package/Case:: TO-261-4, TO-261AA

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

FET Type:: P-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 100 V

Current - Continuous Drain (Id) @ 25°C:: 980mA (Tc)

Drive Voltage (Max Rds On, Min Rds On):: 10V

Rds On (Max) @ Id, Vgs:: 900mOhm @ 980mA, 10V

Vgs(th) (Max) @ Id:: 4V @ 380µA

Gate Charge (Qg) (Max) @ Vgs:: 12 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 319 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 1.8W (Ta)

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PG-SOT223-4

BSP321PH6327XTSA1 FAQ

1.How can I place an order for BSP321PH6327XTSA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for BSP321PH6327XTSA1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for BSP321PH6327XTSA1 reliable?

The price and inventory of BSP321PH6327XTSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BSP321PH6327XTSA1 is usually 5 days.

3.What payment methods are accepted for BSP321PH6327XTSA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BSP321PH6327XTSA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BSP321PH6327XTSA1?

BSP321PH6327XTSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BSP321PH6327XTSA1 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for BSP321PH6327XTSA1?

For technical support, including BSP321PH6327XTSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BSP321PH6327XTSA1 requirements.

6.How does Aetrix verify that BSP321PH6327XTSA1 is sourced from the original manufacturer or authorized distributors?

All BSP321PH6327XTSA1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BSP321PH6327XTSA1 meets industry standards.

7.What is the process for return or replacement of BSP321PH6327XTSA1?

All BSP321PH6327XTSA1 units undergo pre-shipment inspection (PSI). If there is an issue with BSP321PH6327XTSA1, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The BSP321PH6327XTSA1 part is unused and in its original packaging.

Return procedure for BSP321PH6327XTSA1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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