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Diodes Incorporated FMMT720TA
- Part No.:
- FMMT720TA
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
FMMT720TA.pdf
- Description:
- TRANS PNP 40V 1.5A SOT-23-3
- Quantity:
- Payment:
- Shipping:
Inventory:46,962
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Product details
Overview
FMMT720TA from Diodes Incorporated is a 40V PNP silicon low-saturation transistor in SOT23 package, rated for −1.5A continuous collector current, −40V VCEO, and VCE(sat) < −220mV at −1A. It serves as a high-current switching element in gate drive and DC-DC converter power stages.
For engineers reviewing the FMMT720TA datasheet, FMMT720TA pinout, FMMT720TA application, or FMMT720TA equivalent, key selection criteria include saturation voltage under high IC, thermal resistance (RθJA = 200°C/W), AEC-Q101 qualification, and complementary pairing with FMMT619 for push-pull topologies.
Technical Context
This PNP bipolar junction transistor operates in linear or saturated switching mode with characterized hFE down to −3A (min 12 at −3A), enabling stable current gain hold-up during transient load conditions. Its low RCE(SAT) of 163mΩ supports efficient conduction in high-side switch configurations.
The device features −7V VEBO, 4kV HBM ESD rating, and thermal derating to zero power at +150°C ambient-validated per J-STD-020 Level 1 moisture sensitivity and UL 94V-0 flammability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −40V - maximum safe collector-emitter blocking voltage in open-base configuration |
| IC (cont) | −1.5A - continuous DC current handling capability at TA = +25°C with 625mW dissipation limit |
| VCE(sat) | < −220mV @ −1A/−50mA - ensures minimal conduction loss in high-current switching nodes |
| hFE | 180–290 @ −1A - usable DC current gain for base-driven gate control without excessive drive power |
| RθJA | 200°C/W - thermal resistance defining junction-to-ambient rise on standard FR4 PCB (25mm × 25mm, 1 oz Cu) |
| fT | 150–180MHz - transition frequency supporting fast switching in sub-100ns turn-on/turn-off applications |
| ESD HBM | 4,000V - robustness against human-body electrostatic discharge during handling and assembly |
Pinout & Package
Package: SOT23 - surface-mount plastic case, 0.008g weight, matte tin-plated leads, JEDEC-compliant footprint (A=0.40mm, B=1.30mm, C=2.40mm, D=0.915mm, F=0.535mm, G=1.83mm, H=2.90mm, J=0.05mm, K=1.00mm, L=0.55mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Current source terminal | Connected to positive rail in high-side switch; carries full load current with minimal forward drop |
| 2 (Base) | Control input | Receives negative drive current to saturate transistor; requires −50mA for −1A IC operation |
| 3 (Collector) | Output/load connection | Drives gate of downstream MOSFET/IGBT or connects to load return path in DC-DC stage |
Key Features
| Feature | Design Value |
|---|---|
| Low saturation voltage | VCE(sat) < −220mV @ −1A enables ≤0.22W conduction loss in 1A switching paths |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTOL, and ESD stress per AEC specification |
| Complementary NPN pairing | FMMT619 matches VCEO, IC, and speed specs-enabling matched push-pull driver design |
| Green RoHS compliance | Halogen- and antimony-free (<900ppm Br/Cl, <1000ppm Sb) with lead-free terminations per EU directives |
Applications
| Gate Drive for Power Switches | DC-DC Converter High-Side Switch |
|---|---|
Use Scenario: Driving gates of N-channel MOSFETs or IGBTs in half-bridge inverters and motor controllers. IC Role / Device Role / Timing Role: PNP high-side switch providing fast, low-loss turn-on pulse to gate capacitance. Use Value: −220mV VCE(sat) minimizes power loss during gate charging; 40ns ton supports >1MHz switching frequencies. | Use Scenario: Regulating output voltage in buck or SEPIC converters via synchronous rectification control. IC Role / Device Role / Timing Role: High-side current switch controlling energy transfer into inductor or transformer primary. Use Value: −1.5A IC rating and 163mΩ RCE(SAT) reduce conduction loss versus discrete alternatives in 5–24V input designs. |
| Charging Circuit Control | Industrial Power Switching |
Use Scenario: Enabling/disabling battery charging paths in USB PD and multi-chemistry chargers. IC Role / Device Role / Timing Role: Precision current-limited series pass element with thermal foldback protection. Use Value: Characterized hFE down to −3A allows accurate current sensing and regulation across full charge profile. | Use Scenario: Controlling solenoids, relays, and LED arrays in factory automation and building controls. IC Role / Device Role / Timing Role: Robust, thermally stable switching node tolerant of inductive kickback and ambient extremes. Use Value: −55°C to +150°C operating range and 4kV HBM ESD withstand support unattended industrial deployment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP low-saturation transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ZXTN25050DFHTA | Higher VCEO (−50V), lower VCE(sat) (−150mV @ −1A), but SOT23-3L package with different pinout (E-B-C vs E-B-C) | Not pin-compatible; requires PCB redesign due to reversed collector/emitter pad layout | Select when higher breakdown margin and lower saturation loss outweigh layout change cost |
| MMBT3906LT1G | Lower IC (−200mA), higher VCE(sat) (−400mV @ −10mA), no AEC-Q101 qualification | Suitable only for signal-level or low-power biasing-not for 1A+ switching loads | Choose only for non-automotive, low-current bias networks where cost is critical and performance margins are relaxed |
Compared with ZXTN25050DFHTA and MMBT3906LT1G, FMMT720TA uniquely balances −1.5A current capability, −220mV saturation, AEC-Q101 compliance, and SOT23 pinout-making it optimal for automotive and industrial 1A-class gate drivers where reliability and thermal stability are mandatory.
Availability
FMMT720TA is available at Aetrix Electronics and suitable for gate driving MOSFETs and IGBTs, DC-DC converters, and charging circuit applications requiring stable component supply across automotive, industrial, and embedded power designs.
Supply support for FMMT720TA 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, specializing in high-reliability power management, signal integrity, and protection solutions.
The FMMT720TA belongs to Diodes' FMMT series of low-saturation transistors-designed specifically for high-efficiency, high-current switching in automotive power systems and industrial DC-DC conversion.
FAQ
What is the maximum continuous collector current for FMMT720TA at 100°C ambient?
At TA = +100°C, the maximum continuous collector current is derated to approximately −0.75A, based on the 625mW power dissipation limit and RθJA = 200°C/W. This assumes standard PCB mounting with 25mm × 25mm 1 oz copper; actual current must be verified using thermal simulation or measurement under real board conditions.
Is FMMT720TA pin-compatible with the complementary NPN FMMT619?
Yes-both FMMT720TA (PNP) and FMMT619 (NPN) use identical SOT23 packages with matching pinout (Emitter-Base-Collector). This enables direct placement in complementary emitter-follower or push-pull driver circuits without layout changes.
Does FMMT720TA support pulsed operation beyond its continuous current rating?
Yes-it is rated for −4A peak pulse current (ICM) with pulse width ≤ 300µs and duty cycle ≤ 2%. This supports short-duration surge handling in motor start-up or inrush limiting, provided thermal mass and PCB layout prevent junction overheating.
How does the AEC-Q101 qualification impact FMMT720TA's use in non-automotive applications?
AEC-Q101 qualification confirms extended reliability testing-including temperature cycling, high-temperature operating life, and ESD robustness-making FMMT720TA suitable for harsh industrial environments even outside automotive use. No derating or additional validation is required for non-automotive deployment.
FMMT720TA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- PNP
- Current - Collector (Ic) (Max):
- 1.5 A
- Voltage - Collector Emitter Breakdown (Max):
- 40 V
- Vce Saturation (Max) @ Ib, Ic:
- 330mV @ 100mA, 1.5A
- Current - Collector Cutoff (Max):
- 100nA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 300 @ 100mA, 2V
- Power - Max:
- 625 mW
- Frequency - Transition:
- 190MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
FMMT720TA FAQ
1.How can I place an order for FMMT720TA through Aetrix?
Please submit a Request for Quotation (RFQ) for FMMT720TA 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 FMMT720TA reliable?
The price and inventory of FMMT720TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FMMT720TA is usually 5 days.
3.What payment methods are accepted for FMMT720TA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FMMT720TA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FMMT720TA?
FMMT720TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FMMT720TA 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 FMMT720TA?
For technical support, including FMMT720TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FMMT720TA requirements.
6.How does Aetrix verify that FMMT720TA is sourced from the original manufacturer or authorized distributors?
All FMMT720TA 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 FMMT720TA meets industry standards.
7.What is the process for return or replacement of FMMT720TA?
All FMMT720TA units undergo pre-shipment inspection (PSI). If there is an issue with FMMT720TA, 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 FMMT720TA part is unused and in its original packaging.
Return procedure for FMMT720TA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
FMMT720TA Tags
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