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Diodes Incorporated FZT953QTA
- Part No.:
- FZT953QTA
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
FZT953QTA.pdf
- Description:
- TRANS PNP 100V 5A SOT-223-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,755
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Product details
Overview
FZT953QTA from Diodes Incorporated is a 100V PNP medium-power transistor in SOT223 package, designed for high-current switching and linear amplification. It delivers -5A continuous collector current, -100V VCEO, < -115mV VCE(sat) at -1A, 75mΩ RCE(sat), and AEC-Q101 qualification for automotive power control circuits.
For engineers reviewing the FZT953QTA datasheet, FZT953QTA pinout, FZT953QTA application, or FZT953QTA equivalent, key selection criteria include guaranteed hFE ≥50 at -4A, low on-resistance for thermal efficiency, complementary pairing with FZT853, and IATF 16949-manufactured traceability for safety-critical designs.
Technical Context
This PNP bipolar junction transistor operates in active, saturation, and cutoff regions with specified hFE up to -10A, enabling stable current gain across wide load ranges. Its -140V VCBO and -7V VEBO support robust voltage margin in high-side switch configurations.
The device features pulsed switching performance (ton = 110ns, toff = 460ns) and fT = 125MHz, confirming suitability for medium-frequency switching applications. Thermal resistance RθJA = 42°C/W (52mm × 52mm 2oz Cu) enables 3.0W steady-state dissipation without forced cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | -100V - Ensures safe operation in 48V automotive and industrial bus systems with transient margin. |
| IC (cont.) | -5A - Supports sustained load switching in motor drivers and DC-DC converter output stages. |
| VCE(sat) | < -115mV @ -1A - Minimizes conduction loss and self-heating in high-duty-cycle applications. |
| RCE(sat) | 75mΩ - Enables direct comparison with MOSFETs for low-voltage drop requirements. |
| hFE | ≥50 @ -4A - Guarantees reliable base drive scaling for high-current linear regulation. |
| ESD HBM | 4,000V - Meets JEDEC Class 3A for handling robustness in automated assembly environments. |
| TJ Range | -55°C to +150°C - Validated for under-hood automotive and industrial ambient conditions. |
Pinout & Package
Package: SOT223 (Type DN), surface-mount, molded plastic with UL 94V-0 rating, 0.112g weight, and matte tin-plated leads solderable per MIL-STD-202.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Collector (C) | Main current sink terminal | Connected to high-side load return path; thermally coupled to tab for heatsinking via PCB copper pour. |
| Emitter (E) | Current source reference | Bonded to internal die substrate; serves as common return for base drive and load current. |
| Base (B) | Control input | Requires current-limited drive (e.g., 100mA typical for -1A IC) to ensure saturation without overdrive. |
| Tab / Heat Slug | Thermal and electrical connection | Internally connected to collector; must be electrically isolated or grounded per layout to avoid shorting. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive power modules requiring PPAP documentation and IATF 16949 manufacturing traceability. |
| Low RCE(sat) | 75mΩ enables <100mW conduction loss at -1A, reducing thermal design burden vs. higher-RCE alternatives. |
| High hFE hold-up | hFE ≥15 at -10A ensures usable gain even near peak pulse current, simplifying base drive design. |
| Green construction | Halogen- and antimony-free (<900ppm Br/Cl, <1000ppm Sb), meeting global environmental compliance mandates. |
| Complementary NPN | FZT853 provides matched thermal and electrical characteristics for push-pull and H-bridge topologies. |
Applications
| Automotive Door Module | Industrial DC Motor Driver |
|---|---|
Use Scenario: Controlling window lift/lower and mirror adjustment actuators in 12V/24V vehicle platforms. IC Role / Device Role / Timing Role: High-side PNP switch regulating current to brushed DC motors with PWM-compatible turn-on/off timing. Use Value: -100V VCEO withstands load-dump transients; AEC-Q101 qualification ensures reliability across temperature cycling and vibration stress. |
Use Scenario: Driving 5–10A industrial fans, conveyors, or pumps in programmable logic controller (PLC) output modules. IC Role / Device Role / Timing Role: Medium-power discrete switch interfacing microcontroller GPIO to inductive loads with flyback protection. Use Value: 75mΩ RCE(sat) limits power loss to ≤500mW at 5A, enabling compact heatsink-free PCB layouts. |
| 48V Telecom Power Supply | LED Constant-Current Driver |
Use Scenario: Secondary-side synchronous rectification or OR-ing diode replacement in 48V intermediate bus converters. IC Role / Device Role / Timing Role: PNP-controlled high-side switch managing reverse current blocking and soft-start sequencing. Use Value: -140V VCBO provides margin against ringing-induced overshoot; -10A ICM supports surge current during startup. |
Use Scenario: Linear current regulation for high-brightness LED strings in architectural lighting and signage. IC Role / Device Role / Timing Role: Precision emitter-follower configured for analog dimming with feedback loop stability. Use Value: hFE ≥100 at -10mA ensures accurate current mirroring; low VBE(on) variation minimizes thermal drift. |
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 |
|---|---|---|---|
| ZXTN9530ZTA | Higher VCEO (-120V), lower IC (-3A), SOT89 package, no AEC-Q101 qualification | Lacks automotive qualification and thermal capacity for >3A continuous loads | Prefer for non-automotive 12V systems where smaller footprint outweighs current capability |
| MJD953-1G | Same VCEO (-100V), higher IC (-8A), TO-252 package, no AEC-Q101, higher RCE(sat) (120mΩ) | Requires larger PCB area and heatsinking due to TO-252 thermal profile | Choose when peak current exceeds 5A and automotive qualification is not required |
Compared with ZXTN9530ZTA and MJD953-1G, FZT953QTA uniquely balances AEC-Q101 compliance, SOT223 thermal efficiency, and guaranteed hFE at high current-making it optimal for space-constrained automotive and industrial switching where qualification and consistency are mandatory.
Availability
FZT953QTA is available at Aetrix Electronics and suitable for automotive door modules, industrial DC motor drivers, and 48V telecom power supplies requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for FZT953QTA 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 computing markets.
FZT953QTA belongs to Diodes' AEC-Q101-qualified power transistor product line, engineered specifically for high-current, high-voltage switching in harsh-environment applications demanding IATF 16949 process control.
FAQ
What is the maximum safe operating temperature for FZT953QTA?
The FZT953QTA has a rated junction temperature range of -55°C to +150°C. Its absolute maximum storage and operating temperature is +150°C, verified per JESD22-A103. Derating begins above +25°C ambient, with RθJA = 42°C/W on 52mm × 52mm 2oz Cu PCB, limiting continuous power to 3.0W at 25°C ambient.
Is FZT953QTA pin-compatible with other SOT223 PNP transistors?
FZT953QTA uses standard SOT223 (Type DN) pinout: Collector (pin 1), Base (pin 2), Emitter (pin 3), and Tab (internally tied to Collector). While mechanical footprint matches generic SOT223, electrical parameters-including hFE at high current and VCE(sat)-are unique to this part and not interchangeable without circuit validation.
Does FZT953QTA require external base current limiting?
Yes. The base-emitter junction requires current-limited drive: for -1A collector current, typical base current is -100mA. Without series resistance or active current control, excessive base current can cause secondary breakdown or accelerated degradation. Designers must calculate RB based on VBE(sat) ≈ -1.1V and driver capability.
How does the AEC-Q101 qualification impact FZT953QTA's use in non-automotive applications?
AEC-Q101 qualification subjects FZT953QTA to accelerated stress testing (HTOL, TC, UHAST, etc.), resulting in tighter parameter distributions, enhanced defect screening, and documented failure modes. These benefits directly improve field reliability in industrial, medical, and telecom applications-even when automotive compliance is not mandated.
FZT953QTA 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:
- 420mV @ 400mA, 4A
- Current - Collector Cutoff (Max):
- 50nA
- 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
FZT953QTA FAQ
1.How can I place an order for FZT953QTA through Aetrix?
Please submit a Request for Quotation (RFQ) for FZT953QTA 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 FZT953QTA reliable?
The price and inventory of FZT953QTA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FZT953QTA is usually 5 days.
3.What payment methods are accepted for FZT953QTA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FZT953QTA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FZT953QTA?
FZT953QTA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FZT953QTA 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 FZT953QTA?
For technical support, including FZT953QTA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FZT953QTA requirements.
6.How does Aetrix verify that FZT953QTA is sourced from the original manufacturer or authorized distributors?
All FZT953QTA 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 FZT953QTA meets industry standards.
7.What is the process for return or replacement of FZT953QTA?
All FZT953QTA units undergo pre-shipment inspection (PSI). If there is an issue with FZT953QTA, 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 FZT953QTA part is unused and in its original packaging.
Return procedure for FZT953QTA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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