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onsemi MMBTA63LT1
- Part No.:
- MMBTA63LT1
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- -
- Datasheet:
-
MMBTA63LT1.pdf
- Description:
- TRANS SS DARL PNP 30V SOT23
- Quantity:
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Inventory:8,682
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Product details
Overview
MMBTA63LT1 from ON Semiconductor is a PNP silicon Darlington transistor in SOT-23 package, rated for −30 VCE, −500 mAC, and 225 mW dissipation on FR-5 board. It delivers DC current gain (hFE) of 5,000–10,000 at −10 mAC/−5 VCE, with VCE(sat) ≤ −1.5 V and VBE(on) ≤ −2.0 V - used in low-power switching and signal amplification circuits requiring high current gain in space-constrained designs.
For engineers reviewing the MMBTA63LT1 datasheet, pinout, applications, or equivalent options, key selection criteria include verified Darlington configuration, guaranteed −30 V breakdown rating, SOT-23 thermal derating behavior, and AEC-Q101 qualification status for automotive-grade reliability validation.
Technical Context
The MMBTA63LT1 implements a monolithic PNP Darlington pair with integrated base-emitter resistor network absent - enabling direct drive from logic-level sources while maintaining high input impedance. Its structure supports low-saturation operation under −100 mAC/−0.1 mAB conditions and exhibits fT = 125 MHz for small-signal amplification up to VHF band.
Thermal performance is defined for two mounting conditions: 556 °C/W RJA on FR-5 board and 417 °C/W on alumina substrate. Junction temperature range spans −55 °C to +150 °C, supporting operation in extended industrial and automotive ambient environments without forced cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −30 V - Maximum collector-emitter voltage before breakdown; sets upper limit for supply rail compatibility in PNP-switched loads. |
| IC (max) | −500 mA - Continuous collector current capacity; defines maximum load drive capability in linear or saturated switching modes. |
| hFE | 5,000–10,000 - High DC current gain enables microampere-level base drive for milliampere collector loads, reducing MCU GPIO burden. |
| VCE(sat) | ≤ −1.5 V @ −100 mAC/−0.1 mAB - Low saturation voltage minimizes power loss and heat generation in switching applications. |
| fT | 125 MHz - Unity-gain bandwidth confirms usable small-signal amplification up to VHF frequencies with stable gain margin. |
| RJA | 556 °C/W - Thermal resistance on standard FR-5 PCB; determines allowable power dissipation at given ambient temperature. |
| TJ | −55 °C to +150 °C - Extended junction temperature range supports deployment in under-hood automotive or industrial control enclosures. |
Pinout & Package
SOT-23 (TO-236) surface-mount package, 3-pin, Pb-free, RoHS-compliant, case style 318-08. Dimensions: 2.90 × 1.30 × 0.95 mm (L × W × H), pitch 1.90 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Base) | Input control terminal | Directly accepts logic-level or analog bias current; no internal base resistor - external current limiting required. |
| 2 (Emitter) | Common emitter node | Connected to higher potential rail in PNP configuration; carries full load current and must be routed with low-inductance path. |
| 3 (Collector) | Output current sink | Drives load to ground or lower-potential node; voltage swing limited by VCEO rating and saturation behavior. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control modules and body electronics where reliability under thermal cycling and vibration is mandatory. |
| Pb-free / Halogen-free | Complies with RoHS Directive 2011/65/EU and JEDEC JS709C, enabling use in environmentally regulated consumer and industrial products. |
| Darlington architecture | Two cascaded PNP transistors provide >5× higher hFE than single-junction equivalents, reducing base drive requirements in battery-powered systems. |
| High fT (125 MHz) | Supports RF preamplifier and oscillator buffer roles in sub-200 MHz ISM-band circuits without external gain staging. |
Applications
| Automotive Door Lock Actuator Control | Industrial PLC Output Stage |
|---|---|
Use Scenario: Driving solenoid-based door lock actuators in 12 V vehicle systems with PWM-controlled dwell time. IC Role / Device Role / Timing Role: PNP Darlington switch providing high-current sinking capability with minimal MCU GPIO loading. Use Value: Enables direct interface to 8-bit microcontrollers without level-shifting or external driver stages, reducing BOM count and layout area. | Use Scenario: Isolating and amplifying digital output signals from programmable logic controllers to 24 V DC field devices. IC Role / Device Role / Timing Role: Level-translating current amplifier converting 3.3/5 V logic outputs into robust 200+ mA sink drivers. Use Value: Delivers guaranteed −30 V standoff and −500 mA peak current within compact SOT-23 footprint, meeting IEC 61000-4-5 surge immunity requirements. |
| Low-Power Smoke Detector Audio Alarm | Medical Infusion Pump Motor Driver |
Use Scenario: Amplifying piezoelectric buzzer drive signals in battery-operated smoke alarms requiring ultra-low quiescent current. IC Role / Device Role / Timing Role: High-gain audio switch operating in Class-A or Class-B mode with <1 μA leakage (ICBO ≤ −100 nA). Use Value: Extends battery life beyond 10 years via sub-100 nA cutoff current and efficient saturation at low drive levels. | Use Scenario: Controlling small DC motors in portable infusion pumps where EMI-sensitive analog sensing coexists with digital control. IC Role / Device Role / Timing Role: Low-noise, thermally stable current sink managing motor phase current with precise duty-cycle modulation. Use Value: Maintains ±5% current regulation across −40 °C to +85 °C ambient due to matched Darlington junction characteristics and 150 °C TJ(max). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP Darlington transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBTA64LT1G | Higher hFE (10,000–20,000) and same VCEO/IC; identical SOT-23 package and pinout. | Preferred where base drive current is <10 μA or where tighter hFE tolerance is required for analog gain stability. | Select MMBTA64LT1G when higher gain consistency across temperature is critical; otherwise MMBTA63LT1 suffices for general-purpose switching. |
| ZTX951 | TO-92 package, higher PD (500 mW), but lower fT (100 MHz); not SMT-compatible. | Used in through-hole prototyping or legacy repair where board real estate is unconstrained and manual assembly is acceptable. | Choose ZTX951 only for non-SMT builds or when thermal headroom exceeds 2× that of MMBTA63LT1; not drop-in compatible. |
Compared with MMBTA64LT1G and ZTX951, the MMBTA63LT1 offers optimal balance of gain, size, and thermal performance for automated SMT production targeting automotive and medical end equipment - neither over-specified nor under-binned for typical 10–100 mA load switching.
Availability
MMBTA63LT1 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC output stages, and medical device alarm circuits requiring stable component supply with AEC-Q101 compliance and long-term lifecycle support.
Supply support for MMBTA63LT1 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
ON Semiconductor (now part of onsemi) is a global semiconductor supplier specializing in energy-efficient power management, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and medical markets.
The MMBTA63LT1 belongs to ON Semiconductor's general-purpose bipolar transistor product line, engineered for cost-sensitive, high-reliability discrete switching and amplification in space-constrained applications demanding AEC-Q101 validation.
FAQ
What is the maximum continuous collector current rating for the MMBTA63LT1?
The MMBTA63LT1 has a maximum continuous collector current (IC) rating of −500 mA at TA = 25°C on FR-5 board. Derating applies above 25°C at 1.8 mW/°C. This rating assumes proper PCB copper area and airflow; actual usable current depends on thermal design and ambient conditions. The MMBTA63LT1 must not exceed this limit to avoid junction overheating or parametric shift.
Is the MMBTA63LT1 pin-compatible with the MMBTA64LT1G?
Yes, the MMBTA63LT1 is pin-compatible with the MMBTA64LT1G - both use identical SOT-23 package, marking style, and pin 1 (Base), pin 2 (Emitter), pin 3 (Collector) assignment. However, their hFE ranges differ: MMBTA63LT1 is 5,000–10,000, while MMBTA64LT1G is 10,000–20,000. The MMBTA63LT1 may be substituted where lower gain suffices, but verify base drive adequacy in final circuit.
Does the MMBTA63LT1 meet automotive qualification standards?
Yes, the MMBTA63LT1 is AEC-Q101 qualified and PPAP capable, confirming its suitability for automotive applications such as body control modules, lighting drivers, and sensor interface circuits. This qualification covers stress testing for temperature cycling, humidity, mechanical shock, and ESD per AEC-Q101 Rev D. The MMBTA63LT1 also complies with RoHS and halogen-free requirements for automotive supply chains.
What is the typical VCE(sat) for the MMBTA63LT1 under standard test conditions?
The MMBTA63LT1 exhibits VCE(sat) ≤ −1.5 V when tested at IC = −100 mA and IB = −0.1 mA, with VCE = −5.0 V. This saturation voltage ensures low conduction loss in switching applications, translating to <150 mW power dissipation at full rated current. The MMBTA63LT1 maintains this performance across −55 °C to +125 °C junction temperature range per datasheet Figure 2.
Can the MMBTA63LT1 be used in high-frequency amplifier designs?
Yes, the MMBTA63LT1 has an fT of 125 MHz, making it suitable for VHF-band small-signal amplification (e.g., IF stages, RF buffers up to 100 MHz). Its high hFE and low noise characteristics support low-distortion gain at modest collector currents. However, the MMBTA63LT1 is not optimized for RF power amplification; use dedicated RF transistors for >100 mW output or >500 MHz operation.
MMBTA63LT1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- *
- Package/Case:
- -
- Packaging:
- Cut Tape (CT)
- Product Status:
- Obsolete
- Transistor Type:
- -
- Current - Collector (Ic) (Max):
- -
- Voltage - Collector Emitter Breakdown (Max):
- -
- Vce Saturation (Max) @ Ib, Ic:
- -
- Current - Collector Cutoff (Max):
- -
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- -
- Power - Max:
- -
- Frequency - Transition:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MMBTA63LT1 FAQ
1.How can I place an order for MMBTA63LT1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBTA63LT1 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 MMBTA63LT1 reliable?
The price and inventory of MMBTA63LT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMBTA63LT1 is usually 5 days.
3.What payment methods are accepted for MMBTA63LT1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBTA63LT1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBTA63LT1?
MMBTA63LT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBTA63LT1 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 MMBTA63LT1?
For technical support, including MMBTA63LT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBTA63LT1 requirements.
6.How does Aetrix verify that MMBTA63LT1 is sourced from the original manufacturer or authorized distributors?
All MMBTA63LT1 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 MMBTA63LT1 meets industry standards.
7.What is the process for return or replacement of MMBTA63LT1?
All MMBTA63LT1 units undergo pre-shipment inspection (PSI). If there is an issue with MMBTA63LT1, 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 MMBTA63LT1 part is unused and in its original packaging.
Return procedure for MMBTA63LT1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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