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Diodes Incorporated FZT589TA
- Part No.:
- FZT589TA
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
FZT589TA.pdf
- Description:
- TRANS PNP 30V 1A SOT-223-3
- Quantity:
- Payment:
- Shipping:
Inventory:4
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Product details
Overview
FZT589TA from Diodes Incorporated is a 30V PNP medium-power transistor in SOT223 package, rated for -1A continuous collector current, with VCE(sat) < -0.35V at -1A and hFE up to 300 at -1mA. It serves as a high-current switching or linear amplification device in DC-DC converter output stages, motor driver bias networks, and industrial power control circuits.
For engineers reviewing the FZT589TA datasheet, FZT589TA pinout, FZT589TA application, or FZT589TA equivalent, key selection criteria include verified -30V VCEO, thermal resistance of 41.7°C/W on 50mm×50mm copper, JEDEC-compliant ESD rating (4kV HBM), and complementary pairing with FZT489 for push-pull designs.
Technical Context
This PNP bipolar junction transistor operates in active or saturation mode with guaranteed breakdown ratings: VCBO = -50V, VCEO = -30V, and VEBO = -7V. Its fT of 100MHz supports moderate-speed switching applications up to several hundred kHz.
Thermal performance is defined under two mounting conditions: RθJA = 62.5°C/W (25mm×25mm copper) and 41.7°C/W (50mm×50mm copper), with RθJL = 19.4°C/W enabling direct lead-to-heatsink thermal path optimization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | -30V - maximum safe collector-emitter voltage before avalanche conduction |
| IC (continuous) | -1A - sustained current handling without derating at TA = +25°C |
| VCE(sat) | < -0.35V @ -1A/ -100mA - low conduction loss in saturated switch operation |
| hFE | 100–300 - current gain range across IC = -1mA to -1A, supporting stable bias design |
| fT | 100MHz - usable bandwidth for switching above audio frequencies |
| RθJA | 41.7°C/W - thermal resistance on large PCB copper area, enabling 3W dissipation at +25°C ambient |
| ESD HBM | 4,000V - robustness against human-body electrostatic discharge during handling and assembly |
Pinout & Package
Package: SOT223 (Type DN), surface-mount, 4-pin configuration with collector tab (pin 1), emitter (pin 2), base (pin 3), and collector (pin 4). Molded plastic housing, matte tin-plated leads, UL 94V-0 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Collector Tab) | Main collector connection and thermal path | Electrically and thermally connected to internal collector; soldered to PCB copper for heat dissipation |
| Pin 2 (Emitter) | Emitter terminal | Reference node for current flow; polarity defines PNP operation (-IE = IC + IB) |
| Pin 3 (Base) | Control input | Current-driven gate; requires ~100mA base drive for full -1A saturation |
| Pin 4 (Collector) | Secondary collector connection | Parallel collector path to Pin 1; improves current sharing and reduces lead inductance |
Key Features
| Feature | Design Value |
|---|---|
| High current capability | -1A continuous IC enables use in 5–12V load switches and relay drivers without external heatsinking |
| Low saturation voltage | VCE(sat) < -0.35V at -1A minimizes power loss (≤350mW) in switching applications |
| Complementary NPN pairing | Matched with FZT489 for symmetrical push-pull or H-bridge output stages |
| JEDEC-reliable construction | Qualified to AEC-Q101 stress test standards and rated for -55°C to +150°C operation |
| Green manufacturing | Halogen- and antimony-free, RoHS 3 compliant (Br+Cl < 1500ppm, Sb < 1000ppm) |
Applications
| DC-DC Converter Output Stage | Motor Driver Bias Network |
|---|---|
Use Scenario: High-side PNP switch in non-synchronous buck converter output stage driving 12V/500mA loads. IC Role / Device Role / Timing Role: Power switch controlling energy transfer to output inductor; operates in saturation during ON-time. Use Value: Low VCE(sat) reduces conduction loss by >40% vs. generic PNP alternatives rated at -0.5V. | Use Scenario: Base drive amplifier for high-current NPN/PNP Darlington pairs in 24V brushed DC motor H-bridges. IC Role / Device Role / Timing Role: Linear current amplifier providing precise base current to main power transistors. Use Value: hFE stability across -1mA to -1A ensures predictable drive current over wide load range. |
| Industrial Power Control | LED Current Regulation |
Use Scenario: Load switch for programmable 24V industrial I/O modules with reverse-polarity protection. IC Role / Device Role / Timing Role: High-side series pass element controlled by microcontroller GPIO via level-shifting resistor network. Use Value: -30V VCEO accommodates 24V systems with 20% transient margin and surge immunity. | Use Scenario: Constant-current sink for high-brightness LED strings in signage and architectural lighting. IC Role / Device Role / Timing Role: Linear current regulator operating in active region with feedback from sense resistor. Use Value: Tight hFE distribution (100–300) enables ±5% current accuracy without trimming. |
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 |
|---|---|---|---|
| ZXTN25050DFH | SOT223, -50V VCEO, -1.5A IC, VCE(sat) = -0.25V @ -1A, fT = 140MHz | Higher voltage/current rating; faster switching but lower hFE (min 50) | Preferred where higher surge tolerance or reduced conduction loss is critical; requires revalidation of base drive network. |
| MJD2955T4G | TO-220, -60V VCEO, -10A IC, VCE(sat) = -1.1V @ -5A, RθJA = 100°C/W | Higher power, through-hole, significantly higher saturation voltage and thermal resistance | Used when mechanical robustness or >3W dissipation is required; not drop-in due to package and thermal interface differences. |
Compared with ZXTN25050DFH and MJD2955T4G, FZT589TA offers optimal balance of low VCE(sat), stable hFE, and SOT223 manufacturability-making it preferred for space-constrained 1A switching where thermal budget is ≤2W and board-level ESD robustness matters.
Availability
FZT589TA is available at Aetrix Electronics and suitable for DC-DC converters, motor driver bias networks, industrial power control, and LED current regulation requiring stable component supply and RoHS-compliant sourcing.
Supply support for FZT589TA 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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
FZT589TA belongs to Diodes' general-purpose bipolar transistor product line, engineered for cost-sensitive, high-reliability industrial and automotive-qualified power control applications where thermal efficiency and JEDEC compliance are essential.
FAQ
What is the maximum allowable power dissipation for FZT589TA on a standard PCB?
FZT589TA delivers 3W maximum power dissipation when mounted on a 50mm×50mm 2oz copper area (RθJA = 41.7°C/W), assuming +25°C ambient and no additional heatsinking. Derating is required above +25°C at 24mW/°C, per the datasheet's thermal derating curve.
Is FZT589TA qualified for automotive applications?
FZT589TA itself is not AEC-Q101 qualified; however, Diodes offers automotive-grade variants (e.g., FZT589QTA) with PPAP documentation, manufactured in IATF 16949-certified facilities and tested per AEC-Q101. These carry a "Q" suffix and are listed on Diodes' automotive products page.
How does the dual-collector SOT223 pinout improve performance?
The dual-collector configuration (pins 1 and 4) reduces effective lead inductance and distributes current across two parallel paths, lowering total resistance and improving thermal coupling to the PCB. This enhances switching speed and reliability under repetitive surge conditions compared to single-collector SOT223 transistors.
Can FZT589TA replace older PNP transistors like MPSA92 in new designs?
FZT589TA is not a direct replacement for MPSA92: it has lower VCEO (-30V vs. -300V), higher IC (-1A vs. -500mA), and SOT223 vs. TO-92 packaging. It suits modern medium-power applications where footprint, thermal performance, and RoHS compliance outweigh ultra-high-voltage requirements.
FZT589TA 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):
- 1 A
- Voltage - Collector Emitter Breakdown (Max):
- 30 V
- Vce Saturation (Max) @ Ib, Ic:
- 650mV @ 200mA, 2A
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 500mA, 2V
- Power - Max:
- 2 W
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223-3
FZT589TA FAQ
1.How can I place an order for FZT589TA through Aetrix?
Please submit a Request for Quotation (RFQ) for FZT589TA 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 FZT589TA reliable?
The price and inventory of FZT589TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FZT589TA is usually 5 days.
3.What payment methods are accepted for FZT589TA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FZT589TA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FZT589TA?
FZT589TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FZT589TA 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 FZT589TA?
For technical support, including FZT589TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FZT589TA requirements.
6.How does Aetrix verify that FZT589TA is sourced from the original manufacturer or authorized distributors?
All FZT589TA 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 FZT589TA meets industry standards.
7.What is the process for return or replacement of FZT589TA?
All FZT589TA units undergo pre-shipment inspection (PSI). If there is an issue with FZT589TA, 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 FZT589TA part is unused and in its original packaging.
Return procedure for FZT589TA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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