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Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Single Bipolar Transistors

Diodes Incorporated ZX5T953GQTA

Name: ZX5T953GQTA
Brand: Diodes Incorporated
SKU: ZX5T953GQTA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZX5T953GQTA

Manufacturer:: Diodes Incorporated

Category:: Single Bipolar Transistors

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

Datasheet:: ZX5T953GQTA.pdf

Description:: TRANS PNP 100V 5A SOT-223-3

Quantity:: RFQ Add To RFQ list

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Product details

Overview

ZX5T953GQTA from Diodes Incorporated is a 100V PNP medium-power transistor in SOT223 package, rated for -5A continuous collector current and -10A peak pulse current, with V_CE(sat) < -90mV at -1A and R_SAT = 60mΩ. It is AEC-Q101 qualified for automotive use and employed in high-side switching and motor driving circuits where robust voltage blocking and low conduction loss are required.

For engineers reviewing the ZX5T953GQTA datasheet, ZX5T953GQTA pinout, ZX5T953GQTA application, or ZX5T953GQTA equivalent, key selection criteria include verified -100V V_CEO, confirmed h_FE ≥ 25 at -4A, validated thermal resistance R_θJA = 78°C/W on 25mm×25mm 1oz Cu PCB, and automotive-grade qualification status per AEC-Q101.

Technical Context

This PNP bipolar junction transistor operates in linear and switching modes with specified h_FE down to -10A (min 5), enabling stable current amplification in high-current driver stages. Its -140V V_CBO and -7V V_EBO support operation in high-voltage bias networks and SLIC interfaces.

The device features low saturation voltage (-90mV typ at -1A) and fast switching (t_on = 42ns, t_off = 540ns), making it suitable for pulse-controlled loads where turn-off delay must be minimized without sacrificing voltage headroom.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	-100 V - Withstands 100V reverse collector-emitter voltage before breakdown, enabling use in 48V+ industrial and automotive power rails.
I_C (cont.)	-5 A - Supports continuous load currents up to 5A, sufficient for solenoid drivers and fan controllers.
V_CE(sat)	< -90 mV @ -1A - Delivers low conduction loss (≤ 90mW at 1A), reducing heat generation in high-duty-cycle switches.
h_FE	25 min @ -4A - Ensures reliable base drive margin even under high-current saturation, simplifying gate/base driver design.
R_θJA	78 °C/W - Thermal performance on 25mm×25mm 1oz Cu PCB allows ~1.6W dissipation at +70°C ambient before exceeding 150°C T_J.
f_T	125 MHz - Supports high-speed switching up to ~10MHz square-wave operation with minimal gain roll-off.
ESD HBM	4,000 V - Robust handling during board assembly and system integration without additional protection circuitry.

Pinout & Package

Package: SOT223 - Surface-mount plastic package with exposed collector tab for thermal enhancement; 0.112g weight; UL 94V-0 rated molding compound; moisture sensitivity level 1.

Pin/Terminal	Circuit Role	Design Meaning
Collector (Tab)	Main current sink terminal	Electrically connected to metal tab; requires soldered thermal pad for R_θJL = 10.4°C/W path to PCB copper.
Emitter	Current source reference node	Connected to system ground or high-side return; carries full load current with minimal voltage drop.
Base	Control input for current amplification	Receives negative drive current; requires ≥ -400mA base drive for full -4A saturation per h_FE and V_BE(sat) specs.

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive underhood applications including temperature cycling, humidity, and mechanical shock per JESD22 standards.
Low R_SAT = 60mΩ	Enables compact thermal design by limiting I²R losses below 150mW at 2A, reducing need for heatsinking.
High V_CBO = -140V	Supports operation in 100V bus systems with safety margin, eliminating need for external snubbers in inductive load switching.
Lead-free & Halogen-free	Complies with RoHS 2 and JEDEC J-STD-020; eliminates bromine/chlorine/antimony compounds per green manufacturing requirements.
Fast t_off = 540ns	Reduces switching transition time in PWM-driven loads, lowering dynamic losses and EMI generation in motor control stages.

Applications

Motor Driving

Line Switching

Use Scenario: Driving brushed DC motors in automotive HVAC actuators and power seat modules.

IC Role / Device Role / Timing Role: High-side PNP switch controlling motor current flow from battery rail to motor winding.

Use Value: -100V V_CEO withstands load-dump transients up to 120V; low V_CE(sat) minimizes power loss during continuous 3A operation.

Use Scenario: Solid-state replacement of electromechanical relays in 24–48V industrial control panels.

IC Role / Device Role / Timing Role: Medium-power load switch isolating downstream circuits from main supply.

Use Value: AEC-Q101 qualification ensures reliability over 10-year field life; R_θJA = 78°C/W enables operation without forced air cooling.

High Side Switches

Subscriber Line Interface Cards (SLIC)

Use Scenario: Power distribution switching in automotive body control modules (BCM) for lighting and sensors.

IC Role / Device Role / Timing Role: PNP emitter-follower configured as high-side regulator with current limiting.

Use Value: h_FE ≥ 30 at -4A guarantees stable base drive across temperature; -7V V_EBO supports safe biasing in multi-rail systems.

Use Scenario: Ringing generator and line feed circuitry in telecom central office equipment.

IC Role / Device Role / Timing Role: High-voltage PNP switch delivering ±90V AC ringing signals to telephone lines.

Use Value: -140V V_CBO and -100V V_CEO meet GR-909 long-term stress requirements; f_T = 125MHz supports clean 20Hz–5kHz signal fidelity.

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP medium-power transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ZX5T951GQTA	Lower V_CEO = -80V; same SOT223 package and -5A rating	Not suitable for >80V bus systems or load-dump tolerant designs	Select when cost optimization is prioritized and voltage stress remains ≤70V.
MJD122T4G	TO-252 package; V_CEO = -100V; I_C = -8A; higher R_θJA = 62°C/W	Requires larger PCB area but offers higher current headroom and better thermal margin	Choose for industrial motor drives needing >5A continuous current and enhanced thermal derating.

Compared with ZX5T951GQTA, ZX5T953GQTA provides critical 20V higher voltage margin for automotive transients; versus MJD122T4G, it saves board space via SOT223 while trading 3A current headroom for tighter layout constraints.

Availability

ZX5T953GQTA is available at Aetrix Electronics and suitable for automotive body control modules, industrial relay replacements, and telecom SLIC circuits requiring stable component supply with AEC-Q101 compliance and traceable sourcing.

Supply support for ZX5T953GQTA 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability components for automotive, industrial, and communications markets.

The ZX5T953G product line delivers AEC-Q101-qualified PNP transistors optimized for high-voltage, medium-current switching in automotive power distribution and telecom line interface applications.

FAQ

What is the maximum allowable junction temperature for ZX5T953GQTA?

The absolute maximum operating junction temperature is +150°C, as specified in the Thermal Characteristics table. Derating begins at +25°C ambient, with linear reduction of power dissipation at 12.8mW/°C for the 25mm×25mm 1oz Cu mounting condition. Exceeding this limit risks permanent degradation of h_FE and increased leakage current.

Is ZX5T953GQTA pin-compatible with ZX5T953GTA?

Yes - both share identical SOT223 pinout (Collector/Emitter/Base), marking code X5T953, and electrical specifications. The only difference is qualification: ZX5T953GQTA is marked "Automotive" and PPAP-capable, while ZX5T953GTA is marked "AEC-Q101" and intended for general automotive use with identical test records.

Can ZX5T953GQTA be used in parallel configurations?

No - the device lacks built-in emitter ballasting or matched h_FE binning. Parallel operation would cause current imbalance due to V_BE mismatch and thermal runaway. For higher current, use a single higher-rated device like MJD122T4G or implement active current-sharing circuitry.

What is the recommended PCB pad layout for optimal thermal performance?

Use the SOT223 footprint per Diodes' AP02001 guideline: 6.5mm × 3.5mm thermal pad with ≥ 4 thermal vias (0.3mm diameter, spaced ≤ 1.5mm apart) connecting to ≥ 25mm² internal or backside copper pour. Avoid solder mask over the collector tab to ensure direct thermal contact with the PCB plane.

ZX5T953GQTA Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: PNP

Current - Collector (Ic) (Max):: 5 A

Voltage - Collector Emitter Breakdown (Max):: 100 V

Vce Saturation (Max) @ Ib, Ic:: 340mV @ 400mA, 4A

Current - Collector Cutoff (Max):: 20nA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 100 @ 1A, 1V

Power - Max:: 1.6 W

Frequency - Transition:: 125MHz

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

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-223-3

ZX5T953GQTA FAQ

1.How can I place an order for ZX5T953GQTA through Aetrix?

Please submit a Request for Quotation (RFQ) for ZX5T953GQTA 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 ZX5T953GQTA reliable?

The price and inventory of ZX5T953GQTA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZX5T953GQTA is usually 5 days.

3.What payment methods are accepted for ZX5T953GQTA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZX5T953GQTA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZX5T953GQTA?

ZX5T953GQTA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZX5T953GQTA 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 ZX5T953GQTA?

For technical support, including ZX5T953GQTA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZX5T953GQTA requirements.

6.How does Aetrix verify that ZX5T953GQTA is sourced from the original manufacturer or authorized distributors?

All ZX5T953GQTA 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 ZX5T953GQTA meets industry standards.

7.What is the process for return or replacement of ZX5T953GQTA?

All ZX5T953GQTA units undergo pre-shipment inspection (PSI). If there is an issue with ZX5T953GQTA, 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 ZX5T953GQTA part is unused and in its original packaging.

Return procedure for ZX5T953GQTA:

1.Submit a request within 90 days.

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

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