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Diodes Incorporated FZT692BTC
- Part No.:
- FZT692BTC
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
FZT692BTC.pdf
- Description:
- TRANS NPN 70V 2A SOT-223-3
- Quantity:
- Payment:
- Shipping:
Inventory:7,819
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Product details
Overview
FZT692BTC from Diodes Incorporated is a 70V NPN medium-power high-gain transistor in SOT223 package, rated for 2A continuous collector current, with DC current gain hFE ≥ 400 at IC = 0.5A and VCE = 2V, and collector-emitter breakdown voltage BVCEO > 70V. It serves as a robust switching and amplification device in relay drivers, solenoid control circuits, and DC-DC converter power stages.
For engineers reviewing the FZT692BTC datasheet, FZT692BTC pinout, FZT692BTC application, or FZT692BTC equivalent, key selection criteria include its 70V VCEO rating, 2A IC capability, SOT223 thermal performance (RθJA = 41.7°C/W on 50mm × 50mm 2oz Cu), high hFE stability across 100mA–1A, and automotive-grade qualification readiness.
Technical Context
This NPN bipolar junction transistor operates in linear or saturated switching modes, supporting high-current drive with low VCE(sat) (≤500 mV at IC = 1A, IB = 10mA) and fast switching (ton = 46 ns, toff = 1440 ns under pulsed 10V/500mA conditions). Its fT of 150 MHz enables stable operation in mid-frequency power control loops.
The device features complementary PNP pairing with FZT792A, shares identical SOT223 (Type DN) mechanical footprint and thermal characteristics, and meets J-STD-020 Level 1 moisture sensitivity with matte tin-plated leads solderable per MIL-STD-202 Method 208.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 70 V - Withstands 70V collector-to-emitter voltage before breakdown, enabling use in 48V industrial bus and 60V DC-DC primary-side switching |
| IC (continuous) | 2 A - Supports sustained 2A load current without derating on standard PCB copper, suitable for driving 12V/24V relays and solenoids |
| hFE | 400 min @ IC = 0.5A - Ensures reliable base drive efficiency and low gate/base driver loss in discrete Darlington configurations |
| VCE(sat) | 500 mV max @ IC = 1A, IB = 10mA - Limits conduction loss to ≤0.5W at 1A, critical for thermally constrained SOT223 layouts |
| fT | 150 MHz - Enables stable small-signal amplification and feedback loop compensation up to ~15 MHz |
| RθJA | 41.7 °C/W - Junction-to-ambient thermal resistance on 50mm × 50mm 2oz Cu, defining maximum power dissipation (3.0 W) under still-air conditions |
| ESD HBM | 4000 V - Robust electrostatic immunity per JEDEC JESD22-A114 Class 3A, reducing handling and assembly failure risk |
Pinout & Package
Package: SOT223 (Type DN), surface-mount, 4-pin configuration with exposed collector tab for thermal and electrical connection. Molded green plastic housing (UL 94V-0), 0.112 g weight, matte tin-plated leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Emitter) | E | Current sink node; connected to ground or low-side return path in common-emitter switch topologies |
| Pin 2 (Base) | B | Control input; requires ~10mA drive for full saturation at 1A collector current |
| Pin 3 (Collector) | C | Main power output node; electrically and thermally tied to large copper pad via exposed tab |
| Pin 4 (Collector Tab) | C (thermal & electrical) | Integral heat-spreading surface; must be soldered to ≥25 mm² 2oz Cu for rated 3.0W dissipation |
Key Features
| Feature | Design Value |
|---|---|
| High-voltage blocking | 70V VCEO and VCBO enable direct interface with 48V systems without external snubbing |
| High DC current gain | hFE ≥ 400 at 0.5A ensures minimal base drive power and compatibility with microcontroller GPIOs |
| Low saturation voltage | VCE(sat) ≤ 500 mV at 1A reduces conduction losses and self-heating in high-duty-cycle switching |
| Automotive-ready construction | Halogen- and antimony-free "Green" compound, RoHS 3 compliant, PPAP-capable manufacturing in IATF 16949 facilities |
| Robust ESD protection | 4 kV HBM rating eliminates need for external ESD clamps in board-level transient environments |
Applications
| Relay Drivers | Solenoid Control |
|---|---|
Use Scenario: Driving 12V/24V electromagnetic relays in PLC I/O modules and industrial control panels. IC Role / Device Role / Timing Role: NPN switch providing low-impedance path between relay coil and ground, controlled by logic-level signal. Use Value: 2A IC rating accommodates inrush currents up to 1.5× steady-state coil current; 70V VCEO prevents breakdown during coil flyback transients. | Use Scenario: Controlling pneumatic/hydraulic solenoid valves in HVAC actuators and fluid control systems. IC Role / Device Role / Timing Role: High-current switch energizing solenoid windings with fast turn-on (46 ns) and controlled turn-off. Use Value: Low VCE(sat) minimizes power loss and self-heating during extended duty cycles; SOT223 thermal pad sustains 100% on-time operation. |
| DC-DC Converter Switches | Darlington Pair Stages |
Use Scenario: Primary-side switching element in non-isolated buck converters delivering up to 2A output. IC Role / Device Role / Timing Role: Main power switch operating in saturated mode at 100–500 kHz, synchronized to PWM controller. Use Value: 150 MHz fT supports stable gate/base drive timing; RθJA = 41.7°C/W allows 3.0W dissipation with minimal heatsinking. | Use Scenario: Upper transistor in discrete Darlington pair for high-current linear regulators or motor drivers. IC Role / Device Role / Timing Role: Second-stage high-gain amplifier boosting current delivery while maintaining voltage headroom. Use Value: hFE ≥ 400 at 0.5A enables precise current mirroring and low base current error in feedback paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN medium-power transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ZXTN2020Z | Lower VCEO (60V), higher hFE (min 600 @ 0.5A), same SOT223 package | Not suitable for 48V+ bus interfaces; better for low-voltage, high-gain analog amplification | Select when system voltage ≤ 40V and gain linearity at low current is prioritized over voltage margin |
| MJD122 | Higher IC (8A), TO-220 package, lower hFE (min 40 @ 3A), VCEO = 80V | Requires heatsink and through-hole assembly; suited for high-power discrete designs, not space-constrained SMT | Select when >3A peak current or forced-air cooling is required, and board real estate permits TO-220 footprint |
Compared with ZXTN2020Z and MJD122, FZT692BTC uniquely balances 70V voltage rating, 2A continuous current, SOT223 surface-mount compatibility, and high hFE, making it optimal for compact, medium-power industrial switching where thermal management and layout density are constrained.
Availability
FZT692BTC is available at Aetrix Electronics and suitable for relay drivers, solenoid control circuits, and DC-DC converter switches requiring stable component supply, automotive-grade compliance readiness, and SOT223 thermal performance.
Supply support for FZT692BTC 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 FZT series targets medium-power discrete switching applications, emphasizing high voltage, high gain, and automotive-qualified reliability in compact surface-mount packages like SOT223.
FAQ
What is the maximum safe operating temperature for FZT692BTC?
The FZT692BTC has an operating junction temperature range of –55°C to +150°C. Its maximum case temperature depends on PCB layout: with 50mm × 50mm 2oz copper, it sustains 3.0W dissipation at +25°C ambient, yielding ~134°C junction temperature. Derating is required above +25°C ambient per the RθJA curve in DS33157 Rev. 7–2.
Is FZT692BTC qualified to AEC-Q101?
FZT692BTC is manufactured in IATF 16949-certified facilities and supports PPAP documentation, but it is not pre-qualified to AEC-Q101. Diodes offers AEC-Q101 versions under distinct part numbers (e.g., FZT692BQ); customers requiring automotive qualification must specify the Q-suffix variant and engage Diodes' automotive team for change control.
Can FZT692BTC replace FZT692B in existing designs?
Yes - FZT692BTC is a tape-and-reel packaging variant of FZT692B, sharing identical electrical specifications, SOT223 (Type DN) package dimensions, pinout, and thermal characteristics. The "TC" suffix denotes carrier tape packaging (1000 pcs/reel, 12mm tape width), with no functional or parametric difference from the "TA" or "B" variants.
What is the recommended PCB pad layout for optimal thermal performance?
Diodes specifies a minimum pad layout for SOT223 (Type DN) with C = 2.30 mm, C1 = 6.40 mm, X = 1.20 mm, X1 = 3.30 mm, Y = 1.60 mm, Y1 = 1.60 mm, and Y2 = 8.00 mm. For full 3.0W dissipation, the collector tab must connect to ≥25 mm² of 2oz copper; refer to Diodes' package outline document PN-00001 for land pattern and stencil recommendations.
FZT692BTC 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:
- NPN
- Current - Collector (Ic) (Max):
- 2 A
- Voltage - Collector Emitter Breakdown (Max):
- 70 V
- Vce Saturation (Max) @ Ib, Ic:
- 500mV @ 200mA, 2A
- Current - Collector Cutoff (Max):
- 100nA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 150 @ 1A, 2V
- Power - Max:
- 2 W
- Frequency - Transition:
- 150MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223-3
FZT692BTC FAQ
1.How can I place an order for FZT692BTC through Aetrix?
Please submit a Request for Quotation (RFQ) for FZT692BTC 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 FZT692BTC reliable?
The price and inventory of FZT692BTC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FZT692BTC is usually 5 days.
3.What payment methods are accepted for FZT692BTC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FZT692BTC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FZT692BTC?
FZT692BTC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FZT692BTC 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 FZT692BTC?
For technical support, including FZT692BTC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FZT692BTC requirements.
6.How does Aetrix verify that FZT692BTC is sourced from the original manufacturer or authorized distributors?
All FZT692BTC 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 FZT692BTC meets industry standards.
7.What is the process for return or replacement of FZT692BTC?
All FZT692BTC units undergo pre-shipment inspection (PSI). If there is an issue with FZT692BTC, 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 FZT692BTC part is unused and in its original packaging.
Return procedure for FZT692BTC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
FZT692BTC Tags
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