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MMS9012-H-TP
Micro Commercial Co
Interface
21329 Pcs New Original In Stock
Bipolar (BJT) Transistor PNP 25 V 500 mA 150MHz 300 mW Surface Mount SOT-23
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5.0 / 5.0
- (51 Ratings)
MMS9012-H-TP
Product Overview
12994779
DiGi Electronics Part Number
MMS9012-H-TP-DGManufacturer
Micro Commercial Co
MMS9012-H-TP
Description
InterfaceInventory
21329 Pcs New Original In Stock
Bipolar (BJT) Transistor PNP 25 V 500 mA 150MHz 300 mW Surface Mount SOT-23
Quantity
Minimum 1
Minimum 1
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MMS9012-H-TP Technical Specifications
Category
Transistors, Bipolar (BJT), Single Bipolar Transistors
Packaging
Bulk
Series
-
Product Status
Active
Transistor Type
PNP
Current - Collector (Ic) (Max)
500 mA
Voltage - Collector Emitter Breakdown (Max)
25 V
Vce Saturation (Max) @ Ib, Ic
600mV @ 50mA, 500mA
Current - Collector Cutoff (Max)
100nA
DC Current Gain (hFE) (Min) @ Ic, Vce
120 @ 50mA, 1V
Power - Max
300 mW
Frequency - Transition
150MHz
Operating Temperature
-55°C ~ 150°C (TJ)
Mounting Type
Surface Mount
Package / Case
TO-236-3, SC-59, SOT-23-3
Supplier Device Package
SOT-23
Base Product Number
MMS9012
Datasheet & Documents
HTML Datasheet
MMS9012-H-TP-DG
Environmental & Export Classification
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8541.21.0075
Additional Information
Other Names
353-MMS9012-H-TP
Standard Package
1
Alternative Parts
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MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
신속한 배송과 만족스러운 후속 서비스로 계속 이용하고 싶어요.
Dec 02, 2025
사이트 속도가 빠르고, 주문 후 빠른 배송 덕분에 대단히 만족스럽습니다.
Dec 02, 2025
Je recommande vivement DiGi Electronics pour leur fiabilité dans la livraison et leur service après-vente attentionné.
Dec 02, 2025
Products from DiGi Electronics arrive in perfect condition, reflecting careful packing and quality control.
Dec 02, 2025
Shipping was rapid, and the packaging protected the contents perfectly.
Dec 02, 2025
Their high-quality products have helped us achieve better outcomes.
Dec 02, 2025
Excellent shopping experience with DiGi Electronics. Friendly team and budget-friendly prices.
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Frequently Asked Questions (FAQ)
What are the key design risks when replacing a BC808-25LT1G with the MMS9012-H-TP in a high-frequency switching circuit?
When substituting the BC808-25LT1G with the MMS9012-H-TP in high-frequency applications, verify that the 150MHz transition frequency of the MMS9012-H-TP meets your switching needs, as performance margins can shrink near the upper limit. While both transistors share similar Vce breakdown (25 V) and Ic ratings (500 mA), the MMS9012-H-TP has a tighter hFE range starting at 120 @ 50mA, which may affect base drive requirements. Ensure your bias network is adjusted accordingly to maintain saturation and avoid slow turn-off due to insufficient base current. Always check the SOT-23 thermal dissipation under pulsed loads, as 300 mW max power can limit sustained operation in compact layouts.
How does the MMS9012-H-TP perform in low-temperature environments, and what reliability concerns should be considered for automotive applications?
The MMS9012-H-TP is rated for junction temperatures from -55°C to 150°C, making it suitable for automotive under-hood environments. However, at low temperatures, carrier mobility decreases, which can reduce current gain (hFE) and slow turn-on response. In cold-crank scenarios, this could affect switching reliability in PNP-driven components like load switches or level shifters. To mitigate risk, design with a minimum hFE derating (e.g., use 75% of nominal value) and validate circuit operation down to -40°C with actual units. Also, consider PCB thermal cycling effects due to the SOT-23 package’s CTE mismatch in extreme environments.
Can the MMS9012-H-TP reliably switch 400mA loads in a continuous duty application on a standard FR-4 PCB without a heatsink?
The MMS9012-H-TP can handle 400mA continuous collector current, but thermal performance depends heavily on PCB design. With a 300 mW maximum power dissipation, if Vce(sat) reaches 600mV at 400mA, power dissipation is 240mW — close to the thermal limit. On a typical 1oz FR-4 board with minimal copper, junction temperature can exceed 130°C in still air, risking premature failure. For reliable operation, use at least 20mm² of copper pour connected to each pin for heatsinking, avoid enclosed spaces, and verify temperatures in situ using thermal imaging or IR probes during prototype testing.
What layout considerations minimize thermal and electrical risks when integrating the MMS9012-H-TP in dense SMT designs?
In dense surface-mount layouts, the MMS9012-H-TP’s SOT-23 package has limited thermal mass and poor heat spreading, so isolate it from adjacent heat sources and avoid placing it near high-power components. Use short, wide traces (≥0.3mm width) for all three pins to reduce resistance and improve heat conduction. Place thermal vias under copper pads if possible. Avoid daisy-chaining ground connections — instead, connect the emitter directly to a solid ground plane. Keep base traces shielded from noisy signals to prevent false triggering, especially in high-frequency (near 150MHz) applications where parasitic coupling can degrade performance.
How does the MMS9012-H-TP compare with the BC808-40 in gain and switching performance for logic-level interface circuits?
The MMS9012-H-TP (hFE ≥120 @ 50mA) offers lower DC current gain compared to the BC808-40 (typically ≥250), which means higher base drive current is needed to saturate the transistor in logic interface applications. If driven by a 3.3V microcontroller, ensure Ib exceeds 4–5mA to achieve full 500mA switching without operating in the linear region. This increases power loss in the driver stage. Additionally, the MMS9012-H-TP’s 150MHz transition frequency supports faster edge rates than the BC808-40 (~100MHz), making it better suited for high-speed signaling if base drive is sufficient. Prioritize gain margin and base resistor selection when replacing BC808-40 equivalents with the MMS9012-H-TP.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
MMS9012-H-TP CAD Models
Micro Commercial Co MMS9012-H-TP PCB symbols & footprints
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