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Diodes Incorporated FZT788BTA
- Part No.:
- FZT788BTA
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
FZT788BTA.pdf
- Description:
- TRANS PNP 15V 3A SOT-223-3
- Quantity:
- Payment:
- Shipping:
Inventory:941
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Product details
Overview
FZT788BTA from Diodes Incorporated is a 15V PNP medium-power high-gain transistor in SOT223 package, rated for -3A continuous collector current, with hFE > 300 at -2A and ultra-low RCE(sat) of 93 mΩ at -3A. It serves as a high-efficiency switching or linear amplification device in battery-powered flash converters and portable power management circuits.
For engineers reviewing the FZT788BTA datasheet, FZT788BTA pinout, FZT788BTA application, or FZT788BTA equivalent, key selection criteria include guaranteed VCEO = -15V, low saturation voltage under high current, thermal resistance to ambient (41.7°C/W on 50mm × 50mm 2oz copper), ESD HBM rating of 4 kV, and AEC-Q101 readiness for automotive-grade reliability validation.
Technical Context
The FZT788BTA operates as a PNP bipolar junction transistor optimized for medium-power switching with high DC current gain and minimal conduction loss. Its BVCEO and BVCBO both exceed -15V, enabling robust operation in negative-rail biasing topologies, while its VCE(sat) remains ≤ -0.45V at -2A/IB = -10mA - critical for minimizing power dissipation in compact battery-fed systems.
Thermal performance is defined across multiple PCB mounting conditions: RθJA ranges from 41.7°C/W (50mm × 50mm 2oz copper) to 104°C/W (minimum pad layout), and RθJL is 12.9°C/W, confirming efficient heat transfer through the collector lead. The device supports pulsed operation up to 8A peak with fT = 100 MHz, supporting fast-switching applications requiring sub-400 ns turn-off times.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | -15 V - Ensures safe operation in circuits with up to 15V negative rail swing without breakdown |
| IC (continuous) | -3 A - Supports sustained load switching in flash gun inverters and motor drivers |
| hFE | 300 min @ -2A - Enables low-base-drive-current control in high-current switching stages |
| RCE(sat) | 93 mΩ @ -3A - Delivers <0.3V total saturation drop, reducing conduction loss by >40% vs. standard PNP transistors |
| ESD HBM | 4,000 V - Provides handling robustness during automated assembly and field service |
| fT | 100 MHz - Supports fast switching in DC-DC converter output stages up to ~100 kHz PWM |
| toff | 400 ns - Enables clean turn-off in high-frequency pulse applications like camera flash timing |
Pinout & Package
Package: SOT223 (Type DN), surface-mount, 4-pin configuration with emitter-connected tab for thermal and electrical grounding. Molded green compound, UL 94V-0 rated, 0.112 g weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Collector (Tab) | Main current sink terminal | Electrically and thermally connected to exposed metal tab - must be soldered to large copper pour for thermal management |
| Emitter | Current source node | Connected internally to tab; provides low-impedance return path for high-current loads |
| Base | Control input | Receives drive current to modulate collector-emitter conduction; requires current-limiting resistor in series |
| Collector (Lead) | Secondary collector connection | Provides redundant collector routing; electrically tied to tab but offers additional PCB trace routing flexibility |
Key Features
| Feature | Design Value |
|---|---|
| High current gain stability | hFE ≥ 300 at -2A ensures consistent base drive requirements across production lots and temperature range (-55°C to +150°C) |
| Ultra-low saturation resistance | RCE(sat) = 93 mΩ at -3A reduces I²R loss by >50% versus typical SOT223 PNP transistors, improving efficiency in portable power stages |
| Automotive-qualified thermal design | RθJL = 12.9°C/W enables direct thermal coupling to heatsink pads - validated for AEC-Q101 stress testing per IATF 16949 manufacturing |
| Green material compliance | Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb) meets EU RoHS 3 and automotive ELV directives without compromising molding integrity |
Applications
| Flash Gun Converters | Battery-Powered Lighting |
|---|---|
Use Scenario: High-current DC-DC boost stage in camera flash modules requiring rapid capacitor charging pulses. IC Role / Device Role / Timing Role: PNP switch controlling primary-side current flow into transformer winding during energy transfer phase. Use Value: 93 mΩ RCE(sat) limits voltage drop to <0.3V at 3A, preserving >92% efficiency in 3.7V Li-ion powered systems. | Use Scenario: LED driver enable switch in handheld torches and emergency lighting with single-cell lithium or alkaline supply. IC Role / Device Role / Timing Role: High-side current switch isolating LED string from battery during standby or dimming intervals. Use Value: -15V VCEO rating allows safe operation with 12V boost rails; hFE > 300 enables microcontroller GPIO direct drive without external buffer. |
| Portable Power Management | Automotive Interior Lighting |
Use Scenario: Load switch in USB-C PD accessory power distribution, managing 5–9V rail enablement. IC Role / Device Role / Timing Role: Reverse-polarity protected high-side switch controlling downstream buck regulator input. Use Value: -7V VEBO rating supports gate drive from logic-level sources; 4 kV ESD HBM prevents latch-up during hot-plug events. | Use Scenario: Dome light and map light dimming control in passenger vehicles using PWM-modulated base drive. IC Role / Device Role / Timing Role: Linear current regulator operating in active region to smooth PWM transitions and reduce EMI. Use Value: Stable hFE across -40°C to +125°C ensures consistent dimming linearity; AEC-Q101 qualification confirms reliability over 15-year vehicle lifecycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP medium-power switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DIGI-KEY FZT788BTC | Same die, 2,500-unit tape-and-reel (vs. 1,000 for FZT788BTA); identical electrical specs and thermal ratings | No functional difference; selected only for volume procurement logistics | Choose FZT788BTC for production runs ≥5k units to reduce unit cost and reel change frequency |
| ON Semiconductor NSS60201MR6T1G | SOT23 package, lower IC = -2A, higher RCE(sat) = 180 mΩ, no AEC-Q101 qualification | Limited to low-power portable devices where board space is constrained and thermal margin is generous | Select only when footprint reduction outweighs need for 3A capability and automotive reliability assurance |
Compared with FZT788BTA, the FZT788BTC offers identical performance in larger reels for cost-sensitive manufacturing, while the NSS60201MR6T1G trades current capacity and thermal robustness for smaller size - making FZT788BTA the optimal choice for high-reliability, high-current PNP switching where SOT223 real estate is available.
Availability
FZT788BTA is available at Aetrix Electronics and suitable for flash gun converters, battery-powered lighting, and portable power management requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for FZT788BTA 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 FZT788BTA belongs to Diodes' high-gain PNP transistor product line, engineered specifically for medium-power switching in space-constrained, thermally demanding applications such as portable consumer electronics and automotive interior systems.
FAQ
What is the maximum continuous collector current for FZT788BTA?
The FZT788BTA is rated for -3 A continuous collector current at TA = +25°C with proper PCB thermal management (50 mm × 50 mm 2 oz copper). Derating applies above +25°C ambient: power dissipation drops linearly to zero at +150°C junction temperature, per the published derating curve in DS33167 Rev. 5-2.
Is FZT788BTA qualified for automotive use?
FZT788BTA is manufactured in IATF 16949-certified facilities and supports PPAP documentation. While not pre-qualified to AEC-Q101 out-of-box, Diodes Incorporated confirms it meets all stress test requirements for AEC-Q101 Grade 1 (-40°C to +125°C) upon request - making it suitable for automotive interior lighting and body control modules with customer-specific qualification.
How does the SOT223 pinout differ between FZT788BTA and complementary NPN FZT688B?
FZT788BTA (PNP) and FZT688B (NPN) share identical SOT223 mechanical pinout: Collector (tab), Emitter, Base, Collector (lead). However, internal polarity differs - FZT788BTA's emitter connects to the tab and is the most positive terminal in circuit operation, whereas FZT688B's collector connects to the tab and is the most negative terminal.
What is the recommended minimum pad layout for FZT788BTA on FR4 PCB?
The recommended minimum pad layout for FZT788BTA is defined in Diodes' SOT223 (Type DN) outline drawing: C = 2.30 mm, C1 = 6.40 mm, X = 1.20 mm, X1 = 3.30 mm, Y = 1.60 mm, Y1 = 1.60 mm, Y2 = 8.00 mm. This layout yields RθJA = 104°C/W - acceptable for low-duty-cycle applications but requires thermal derating for continuous 3A operation.
FZT788BTA 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):
- 3 A
- Voltage - Collector Emitter Breakdown (Max):
- 15 V
- Vce Saturation (Max) @ Ib, Ic:
- 500mV @ 50mA, 3A
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 500 @ 10mA, 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
FZT788BTA FAQ
1.How can I place an order for FZT788BTA through Aetrix?
Please submit a Request for Quotation (RFQ) for FZT788BTA 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 FZT788BTA reliable?
The price and inventory of FZT788BTA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FZT788BTA is usually 5 days.
3.What payment methods are accepted for FZT788BTA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FZT788BTA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FZT788BTA?
FZT788BTA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FZT788BTA 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 FZT788BTA?
For technical support, including FZT788BTA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FZT788BTA requirements.
6.How does Aetrix verify that FZT788BTA is sourced from the original manufacturer or authorized distributors?
All FZT788BTA 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 FZT788BTA meets industry standards.
7.What is the process for return or replacement of FZT788BTA?
All FZT788BTA units undergo pre-shipment inspection (PSI). If there is an issue with FZT788BTA, 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 FZT788BTA part is unused and in its original packaging.
Return procedure for FZT788BTA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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