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Diodes Incorporated FZTA92TA
- Part No.:
- FZTA92TA
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
FZTA92TA.pdf
- Description:
- TRANS PNP 300V 0.5A SOT-223-3
- Quantity:
- Payment:
- Shipping:
Inventory:6,711
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Product details
Overview
FZTA92TA from Diodes Incorporated is an obsolete PNP silicon planar high-voltage transistor in SOT-223 package, rated for VCEO = −150 V, IC = −500 mA, and PD = 1 W at TA = 25°C, used in automotive voltage regulation and industrial power switching circuits.
For engineers reviewing the FZTA92TA datasheet, FZTA92TA pinout, FZTA92TA application, or FZTA92TA equivalent, key selection considerations include its high-voltage PNP switching capability, thermal derating behavior in SOT-223, AEC-Q101 qualification status, and mandatory migration path to DZTA92.
Technical Context
The FZTA92TA operates as a high-voltage PNP bipolar junction transistor with a minimum DC current gain (hFE) of 100 at IC = −10 mA and VCE = −5 V. Its breakdown voltage specification VCEO = −150 V enables use in flyback snubber and relay driver stages where reverse collector-emitter standoff is critical.
Thermal performance is defined by RθJA = 125°C/W (standard PCB mount) and RθJC = 10°C/W, requiring careful heatsinking above 300 mW dissipation. The device is qualified per AEC-Q101 and manufactured in IATF 16949-certified facilities, confirming suitability for automotive-grade power control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −150 V: Maximum reverse collector-emitter voltage before breakdown; supports 125 V rail switching with 20% margin. |
| IC | −500 mA: Continuous collector current rating; limits load drive capability in linear or saturated switch mode. |
| PD | 1 W @ TA = 25°C: Absolute maximum power dissipation; derates to ~0.5 W at 75°C ambient. |
| hFE | 100–300 @ IC = −10 mA, VCE = −5 V: Current gain range determines base drive requirements for saturation. |
| RθJA | 125°C/W: Junction-to-ambient thermal resistance on standard FR-4; dictates heatsink necessity above 300 mW. |
| fT | ≥50 MHz: Minimum transition frequency; supports switching up to ~5 MHz with acceptable gain roll-off. |
Pinout & Package
SOT-223 package with exposed emitter tab for thermal conduction and mechanical anchoring; standardized 4-pin footprint (Emitter, Base, Collector, Emitter) where Pin 1 = Emitter, Pin 2 = Base, Pin 3 = Collector, Pin 4 = Emitter (tab).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (E) | Emitter | Main current return path; electrically and thermally connected to exposed copper tab. |
| Pin 2 (B) | Base | Current-controlled input node; requires ~50 µA–1 mA drive for full saturation at IC = −500 mA. |
| Pin 3 (C) | Collector | High-voltage output terminal; withstands −150 V reverse bias when emitter is grounded. |
| Pin 4 (E) | Emitter (Tab) | Primary thermal interface; must be soldered to ≥1 cm² copper pour for rated power handling. |
Key Features
| Feature | Design Value |
|---|---|
| High-voltage PNP structure | Enables direct high-side switching of 100+ V rails without level-shifting circuitry. |
| AEC-Q101 qualification | Validated for automotive temperature cycling, humidity, and mechanical shock per Grade 1 requirements. |
| SOT-223 thermal design | Exposed emitter tab delivers 10× lower RθJC than SOT-23, enabling 2× higher continuous power in same board area. |
| High hFE consistency | Guaranteed hFE ≥100 across production lot ensures predictable base drive sizing in safety-critical designs. |
Applications
| Automotive Door Module | Industrial Relay Driver |
|---|---|
Use Scenario: Controlling 24 V solenoid locks and window lift motors in door ECUs. IC Role / Device Role / Timing Role: High-side PNP switch sourcing current to inductive loads during active-high enable signals. Use Value: −150 V VCEO provides 5× overvoltage margin against load-dump transients up to 30 V. | Use Scenario: Driving 120 VAC coil relays via optocoupler-isolated base control in PLC I/O modules. IC Role / Device Role / Timing Role: Interface transistor translating logic-level signals to high-voltage relay coil activation. Use Value: 1 W power rating sustains 500 mA coil current with <100 µs turn-off delay under snubber-limited conditions. |
| DC-DC Flyback Snubber | High-Voltage Bias Supply |
Use Scenario: Clamping voltage spikes across primary windings in 48 V–400 V isolated DC-DC converters. IC Role / Device Role / Timing Role: Passive clamp transistor conducting transient energy into RC network during MOSFET turn-off. Use Value: 50 MHz fT ensures fast turn-on response to sub-100 ns voltage overshoot events. | Use Scenario: Generating regulated −12 V bias for op-amp front-ends in HV sensor signal conditioning circuits. IC Role / Device Role / Timing Role: Linear regulator pass element delivering stable negative voltage from unregulated −150 V rail. Use Value: hFE ≥100 allows low-noise operation with <2 mV ripple at 10 mA output current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage PNP transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DZTA92 | Direct replacement with identical VCEO, IC, and SOT-223 package; improved hFE min = 150 and tighter RθJA tolerance. | Same automotive and industrial use cases; validated for PPAP and change-controlled manufacturing. | Select DZTA92 for new designs requiring guaranteed supply continuity and enhanced gain consistency. |
| MJD127 | Higher PD = 1.5 W and VCEO = −100 V; TO-252 package with different thermal profile and pinout. | Acceptable in non-automotive 24–48 V systems where −100 V margin suffices and board space permits larger footprint. | Use MJD127 only if redesign accommodates TO-252 layout and thermal management changes. |
Compared with FZTA92TA, DZTA92 offers assured long-term availability and tighter parametric control, while MJD127 trades voltage rating for higher power and different packaging-neither is pin-compatible, but both address overlapping high-voltage PNP switching needs with distinct trade-offs.
Availability
FZTA92TA is available at Aetrix Electronics and suitable for automotive door modules, industrial relay drivers, DC-DC flyback snubbers, and high-voltage bias supplies requiring stable component supply despite end-of-life status.
Supply support for FZTA92TA 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 the Americas.
The FZTA92TA belongs to Diodes' high-voltage bipolar transistor product line, engineered specifically for AEC-Q101-compliant automotive power control and industrial snubbing applications demanding robust voltage standoff and thermal reliability.
FAQ
Is FZTA92TA still in production?
No, FZTA92TA is officially obsolete and discontinued per Diodes' DS33194 Rev. 4 notice. Diodes recommends migrating to DZTA92 as the designated replacement part. Aetrix Electronics maintains limited legacy stock for repair and maintenance programs but does not support new design-in.
What is the pin configuration of FZTA92TA in SOT-223?
FZTA92TA uses a 4-pin SOT-223 package with Pin 1 = Emitter, Pin 2 = Base, Pin 3 = Collector, and Pin 4 = Emitter (exposed tab). The tab is internally connected to the emitter and must be soldered to PCB copper for thermal and electrical integrity.
Can FZTA92TA be used in non-automotive applications?
Yes-its −150 V VCEO, 1 W power rating, and 125°C/W thermal resistance make it suitable for industrial power switching, flyback snubbing, and HV bias generation outside automotive contexts, provided AEC-Q101 qualification is not required for the target application.
How does DZTA92 differ functionally from FZTA92TA?
DZTA92 matches FZTA92TA's VCEO, IC, and package but specifies minimum hFE = 150 (vs. 100) and tighter RθJA distribution. It is fully qualified for PPAP and manufactured under updated IATF 16949 controls, ensuring consistent supply and performance for new automotive designs.
FZTA92TA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-261-4, TO-261AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Transistor Type:
- PNP
- Current - Collector (Ic) (Max):
- 500 mA
- Voltage - Collector Emitter Breakdown (Max):
- 300 V
- Vce Saturation (Max) @ Ib, Ic:
- 500mV @ 2mA, 20mA
- Current - Collector Cutoff (Max):
- 250nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 25 @ 30mA, 10V
- Power - Max:
- 2 W
- Frequency - Transition:
- 50MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223-3
FZTA92TA FAQ
1.How can I place an order for FZTA92TA through Aetrix?
Please submit a Request for Quotation (RFQ) for FZTA92TA 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 FZTA92TA reliable?
The price and inventory of FZTA92TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FZTA92TA is usually 5 days.
3.What payment methods are accepted for FZTA92TA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FZTA92TA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FZTA92TA?
FZTA92TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FZTA92TA 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 FZTA92TA?
For technical support, including FZTA92TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FZTA92TA requirements.
6.How does Aetrix verify that FZTA92TA is sourced from the original manufacturer or authorized distributors?
All FZTA92TA 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 FZTA92TA meets industry standards.
7.What is the process for return or replacement of FZTA92TA?
All FZTA92TA units undergo pre-shipment inspection (PSI). If there is an issue with FZTA92TA, 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 FZTA92TA part is unused and in its original packaging.
Return procedure for FZTA92TA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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