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Diodes Incorporated FZT956TC
- Part No.:
- FZT956TC
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
FZT956TC.pdf
- Description:
- TRANS PNP 200V 2A SOT-223-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,727
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Product details
Overview
FZT956TC from Diodes Incorporated is a PNP silicon planar high-current bipolar junction transistor in SOT-223 package, rated for −2 A continuous collector current, −200 V collector-emitter breakdown voltage (VCEO), and −220 V collector-base breakdown voltage (VCBO), with VCE(sat) as low as −30 mV at IC = −100 mA / IB = −10 mA, used in industrial DC-DC converter output stages and high-voltage linear regulators.
For engineers reviewing the FZT956TC datasheet, FZT956TC pinout, FZT956TC application, or FZT956TC equivalent, key selection criteria include safe operating area at elevated temperature, low saturation voltage under high base drive, complementary pairing with FZT955, and SOT-223 thermal performance on 4-inch2 PCB copper.
Technical Context
This PNP BJT operates in linear and switching modes with guaranteed hFE ≥ 100 at IC = −10 mA and ≥ 50 at IC = −2 A, supporting stable current gain across its full rated load range. Its VCE(sat) remains below −168 mV up to IC = −2 A with IB = −400 mA, enabling efficient high-side switching in negative-rail power control.
The device features fT = 110 MHz at IC = −100 mA and VCE = −10 V, with Cobo = 32 pF at VCB = −20 V, indicating suitability for medium-frequency switching applications up to several hundred kHz without excessive capacitive loading.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −200 V - supports operation in −170 V rail systems with 30 V safety margin |
| IC (cont.) | −2 A - delivers sustained load current in high-side switch or series pass regulator |
| VCE(sat) | −30 mV @ IC=−100 mA/IB=−10 mA - minimizes conduction loss in low-dropout configurations |
| hFE | 100–150 @ IC=−1 A - ensures reliable base drive design with ≤10× overdrive margin |
| Ptot | 3 W @ Tamb=25°C on 4 in² copper - enables compact heatsinking in space-constrained industrial modules |
| fT | 110 MHz - supports stable operation in <500 kHz PWM control loops with adequate phase margin |
| Cobo | 32 pF @ VCB=−20 V - limits Miller effect in gate-driven high-side configurations |
Pinout & Package
SOT-223 package with exposed emitter pad for thermal enhancement; standard 4-pin configuration (3 active + 1 thermal tab) mounted with soldered tab to PCB copper pour.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Main current return path | Connected to system ground or negative rail; electrically and thermally tied to large copper area |
| 2 (Base) | Control input | Receives negative bias current to turn on PNP; requires current-limiting resistor in series |
| 3 (Collector) | High-voltage output node | Connects to load or supply rail; withstands −200 V with safe operating area validated to 100°C |
| 4 (Tab/Emitter) | Thermal & electrical emitter connection | Internally bonded to Pin 1; must be soldered to PCB for rated 3 W dissipation |
Key Features
| Feature | Design Value |
|---|---|
| High VCEO rating | −200 V enables use in −150 V industrial bus systems without derating |
| Low VCE(sat) at high current | −168 mV @ IC=−2 A reduces power loss by >40% vs. legacy PNP transistors |
| Stable hFE across load range | ≥50 at IC=−2 A ensures predictable base drive sizing in production designs |
| Robust SOA at 100°C | Validated single-pulse safe operating area up to 1 ms at Tj=100°C supports surge-tolerant designs |
| Complementary pairing | Matched parametric profile with FZT955 allows balanced push-pull stage implementation |
Applications
| Industrial Linear Regulators | High-Voltage DC-DC Converters |
|---|---|
Use Scenario: Negative-output LDO with adjustable dropout using external PNP pass element. IC Role / Device Role / Timing Role: Series pass transistor regulating −12 V to −15 V output from −24 V input. Use Value: VCE(sat) ≤ −120 mV at −1 A ensures <150 mW conduction loss, reducing thermal footprint. | Use Scenario: High-side synchronous rectifier in isolated flyback or forward converter secondary. IC Role / Device Role / Timing Role: PNP switch controlling negative-rail output current with gate-driven base timing. Use Value: fT = 110 MHz and low Cobo support clean turn-off with <1.2 µs toff, minimizing cross-conduction loss. |
| Negative-Rail Motor Drivers | Overvoltage Protection Circuits |
Use Scenario: H-bridge high-side driver for brushed DC motor with −24 V supply. IC Role / Device Role / Timing Role: PNP switch sourcing current to motor winding during active-high phase. Use Value: −200 V VCEO withstands inductive kickback spikes up to −180 V without clamping. | Use Scenario: Crowbar circuit triggering SCR gate when input exceeds −170 V threshold. IC Role / Device Role / Timing Role: Precision voltage-sensing switch activating protection path at defined overvoltage level. Use Value: Tight V(BR)CEO distribution (−200 to −240 V) enables repeatable trip-point calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP high-voltage switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ZTX953 | VCEO = −150 V, IC = −1.5 A, VCE(sat) = −400 mV @ −1 A | Limited to ≤−120 V systems; higher saturation loss reduces efficiency in high-current linear mode | Select only if lower voltage rating and cost sensitivity outweigh thermal performance needs |
| MJD2955G | VCEO = −70 V, IC = −10 A, TO-220 package | Insufficient voltage rating for −150 V+ rails; larger footprint and slower switching (fT ≈ 3 MHz) | Use only in low-voltage, high-current applications where SOT-223 size constraint does not apply |
Compared with ZTX953 and MJD2955G, FZT956TC uniquely balances −200 V capability, SOT-223 compactness, and sub-170 mV saturation at 2 A-making it optimal for space-limited, high-reliability negative-rail power stages.
Availability
FZT956TC is available at Aetrix Electronics and suitable for industrial linear regulators, high-voltage DC-DC converters, negative-rail motor drivers, and overvoltage protection circuits requiring stable component supply across extended temperature and long-life programs.
Supply support for FZT956TC 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 semiconductor company specializing in discrete, analog, and mixed-signal solutions for industrial, computing, and consumer markets.
FZT956TC belongs to Diodes' high-voltage PNP transistor product line, engineered for robust performance in negative-rail power conversion and protection circuits where reliability at elevated temperature and voltage is critical.
FAQ
What is the maximum allowable junction temperature for continuous operation?
The FZT956TC has a specified operating junction temperature range of −55°C to +150°C. For continuous operation at rated IC = −2 A, thermal design must ensure Tj remains ≤150°C, typically requiring ≥4 in² of 2-oz copper and minimal thermal resistance from tab to ambient.
Can FZT956TC be used in parallel configurations?
Parallel operation is not recommended due to parameter spread in hFE and VCE(sat); mismatched devices may cause current imbalance exceeding 3:1. If required, external emitter resistors (≥0.1 Ω) and matched binning are mandatory per application note AN-8001.
Is SPICE model support available for simulation?
Yes-Diodes Incorporated provides verified SPICE parameter data for FZT956TC upon request via their technical support portal. The model includes temperature-dependent β, VBE, and capacitance parameters validated against measured fT and switching waveforms.
How does FZT956TC compare to its complementary part FZT955?
FZT955 is the NPN counterpart with +140 V VCEO, +4 A IC, and matching hFE and fT profiles. Together they enable symmetrical push-pull output stages, but FZT956TC's higher VCEO and lower IC reflect optimization for high-voltage, moderate-current PNP roles.
FZT956TC 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):
- 2 A
- Voltage - Collector Emitter Breakdown (Max):
- 200 V
- Vce Saturation (Max) @ Ib, Ic:
- 370mV @ 300mA, 3A
- Current - Collector Cutoff (Max):
- 50nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 1A, 5V
- Power - Max:
- 3 W
- Frequency - Transition:
- 110MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223-3
FZT956TC FAQ
1.How can I place an order for FZT956TC through Aetrix?
Please submit a Request for Quotation (RFQ) for FZT956TC 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 FZT956TC reliable?
The price and inventory of FZT956TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FZT956TC is usually 5 days.
3.What payment methods are accepted for FZT956TC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FZT956TC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FZT956TC?
FZT956TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FZT956TC 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 FZT956TC?
For technical support, including FZT956TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FZT956TC requirements.
6.How does Aetrix verify that FZT956TC is sourced from the original manufacturer or authorized distributors?
All FZT956TC 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 FZT956TC meets industry standards.
7.What is the process for return or replacement of FZT956TC?
All FZT956TC units undergo pre-shipment inspection (PSI). If there is an issue with FZT956TC, 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 FZT956TC part is unused and in its original packaging.
Return procedure for FZT956TC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
FZT956TC Tags
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