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Diodes Incorporated MMBTA56Q-7-F
- Part No.:
- MMBTA56Q-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MMBTA56Q-7-F.pdf
- Description:
- TRANS PNP 80V 0.5A SOT-23-3
- Quantity:
- Payment:
- Shipping:
Inventory:20,604
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Product details
Overview
MMBTA56Q-7-F from Diodes Incorporated is a 80V PNP medium-power bipolar junction transistor in SOT23 package, rated for -500mA continuous collector current and 350mW power dissipation at 25°C ambient, with DC current gain (hFE) ≥100 at -10mA/-1.0V, used for low-power amplification and switching in automotive-compliant signal conditioning circuits.
For engineers reviewing the MMBTA56Q-7-F datasheet, MMBTA56Q-7-F pinout, MMBTA56Q-7-F application, or MMBTA56Q-7-F equivalent, this page delivers verified electrical parameters, validated SOT23 terminal mapping, automotive-grade reliability data, and direct functional alternatives for discrete PNP switching and amplification design.
Technical Context
This PNP transistor features epitaxial planar die construction, enabling stable gain and low saturation voltage (-0.25V at -100mA/-10mA) under switching conditions. Its -80V VCEO and -80V VCBO ratings support operation in higher-voltage bias networks compared to standard 60V PNP types like MMBTA55Q.
Thermal resistance is specified at 357°C/W (junction-to-ambient, 15mm×15mm copper), with ESD robustness of 4kV HBM and 400V MM-critical for assembly-line handling and automotive subsystem integration where transient immunity matters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | -80 V: Maximum safe collector-emitter voltage before breakdown in common-emitter configuration. |
| IC (cont.) | -500 mA: Continuous collector current rating defining maximum steady-state load drive capability. |
| PD | 350 mW: Power dissipation limit on 15mm×15mm PCB copper, setting thermal derating baseline. |
| hFE | ≥100 at -10mA/-1.0V: Minimum DC current gain ensuring reliable base-driven switching with low control current. |
| VCE(sat) | -0.25 V at -100mA/-10mA: Low saturation voltage reduces conduction loss in high-duty-cycle switching. |
| fT | 50 MHz: Current gain-bandwidth product confirming suitability for audio-frequency amplification and fast digital switching. |
Pinout & Package
SOT23 plastic surface-mount package with matte tin-plated leads, UL 94V-0 flammability rating, moisture sensitivity level 1, and approximate weight of 0.008 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| E (Emitter) | Current source terminal for PNP device | Connected to higher potential rail; defines reference point for base bias and load return path. |
| B (Base) | Control input for minority-carrier injection | Receives negative-going drive signal to turn on; requires current limiting to avoid overdrive. |
| C (Collector) | Current sink terminal | Connected to load and lower-potential node; carries full switched current with minimal voltage drop in saturation. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | Qualified per AEC-Q101 requirements, supporting use in engine control modules and body electronics. |
| Green compound packaging | Halogen- and antimony-free molding compound (<900ppm Br/Cl, <1000ppm Sb), meeting global environmental compliance mandates. |
| Low VCE(sat) | -0.25V at -100mA ensures <25mW conduction loss per switch event, improving efficiency in battery-powered systems. |
| High BVCEO | -80V rating enables use in 24V automotive supply rails with margin for load-dump transients. |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Driving LED status indicators and small solenoids in door latch and mirror control units. IC Role / Device Role / Timing Role: PNP switch controlling current flow from 12V/24V rail to grounded loads. Use Value: -80V VCEO provides headroom against load-dump spikes up to 60V, reducing need for external clamping. |
Use Scenario: Level-shifting and buffering analog sensor outputs (e.g., thermistor bridges) into microcontroller ADC inputs. IC Role / Device Role / Timing Role: Emitter-follower amplifier providing low-output-impedance buffering without inversion. Use Value: hFE ≥100 ensures stable biasing across temperature, minimizing offset drift in precision measurement paths. |
| Consumer Appliance Power Sequencing | Medical Diagnostic Equipment Biasing |
Use Scenario: Enabling/disabling auxiliary power rails during startup and fault recovery in smart HVAC controllers. IC Role / Device Role / Timing Role: High-side switch activated by MCU GPIO through current-limiting resistor. Use Value: -0.25V VCE(sat) limits heat generation during sustained ON state, supporting compact enclosure designs. |
Use Scenario: Providing stable bias current for photodiode transimpedance amplifiers in portable blood oximeters. IC Role / Device Role / Timing Role: Constant-current source configured with emitter resistor and base voltage reference. Use Value: Tight ICBO ≤ -100nA ensures negligible leakage-induced error in sub-nA photocurrent measurements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP medium-power transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBTA56-7-F | Non-automotive grade; same electrical specs but lacks AEC-Q101 qualification and tighter process controls. | Approved for commercial/industrial use only; not permitted in automotive production BOMs. | Select when cost sensitivity outweighs automotive compliance requirements. |
| PN2907A-TP | Higher VCEO (-60V), lower hFE (min 100 only at -10mA), no automotive qualification, TO-92 package. | Limited to low-density through-hole boards; unsuitable for automated SMT assembly or high-reliability environments. | Choose only for legacy repair or prototyping where SOT23 footprint is unavailable. |
Compared with MMBTA56-7-F, the Q-grade variant adds AEC-Q101 validation and tighter parametric screening-essential for automotive deployment-while PN2907A-TP trades surface-mount compatibility and thermal performance for legacy package familiarity and lower unit cost.
Availability
MMBTA56Q-7-F is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, consumer appliance power sequencing, and medical diagnostic equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MMBTA56Q-7-F 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 spanning Asia, Europe, and North America.
This part belongs to Diodes' AEC-Q101-qualified discrete transistor portfolio, engineered specifically for automotive subsystems requiring robustness against thermal cycling, vibration, and electrical transients.
FAQ
What is the maximum operating temperature for MMBTA56Q-7-F?
The device supports an operating junction temperature range of -55°C to +150°C, with storage temperature matching that range. Derating begins above +25°C ambient per the published thermal curve-power dissipation drops linearly to zero at +150°C junction temperature.
Is MMBTA56Q-7-F pin-compatible with MMBTA55Q-7-F?
Yes-both share identical SOT23 pinout (E-B-C), marking code K2G, and mechanical dimensions. However, MMBTA55Q has -60V VCEO/VCBO ratings versus -80V for MMBTA56Q, so substitution requires verification of voltage margin in the target circuit.
Does MMBTA56Q-7-F require a heatsink in typical applications?
No heatsink is required for operation within its 350mW power limit on a 15mm×15mm 1oz copper pad. Thermal resistance is 357°C/W; at 100mW dissipation and +25°C ambient, junction temperature rises only ~36°C-well within safe limits.
Can MMBTA56Q-7-F be used in linear amplifier configurations?
Yes-it exhibits fT = 50MHz and hFE stability across collector current, supporting Class-A audio preamplifier stages. However, its VCE(sat) and thermal characteristics make it better suited for switching than high-fidelity linear gain; biasing must ensure operation within SOA limits.
MMBTA56Q-7-F 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):
- 500 mA
- Voltage - Collector Emitter Breakdown (Max):
- 80 V
- Vce Saturation (Max) @ Ib, Ic:
- 250mV @ 10mA, 100mA
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 100mA, 1V
- Power - Max:
- 350 mW
- Frequency - Transition:
- 50MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
MMBTA56Q-7-F FAQ
1.How can I place an order for MMBTA56Q-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBTA56Q-7-F 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 MMBTA56Q-7-F reliable?
The price and inventory of MMBTA56Q-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMBTA56Q-7-F is usually 5 days.
3.What payment methods are accepted for MMBTA56Q-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBTA56Q-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBTA56Q-7-F?
MMBTA56Q-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBTA56Q-7-F 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 MMBTA56Q-7-F?
For technical support, including MMBTA56Q-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBTA56Q-7-F requirements.
6.How does Aetrix verify that MMBTA56Q-7-F is sourced from the original manufacturer or authorized distributors?
All MMBTA56Q-7-F 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 MMBTA56Q-7-F meets industry standards.
7.What is the process for return or replacement of MMBTA56Q-7-F?
All MMBTA56Q-7-F units undergo pre-shipment inspection (PSI). If there is an issue with MMBTA56Q-7-F, 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 MMBTA56Q-7-F part is unused and in its original packaging.
Return procedure for MMBTA56Q-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMBTA56Q-7-F Tags
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