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Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Single Bipolar Transistors

Nexperia USA Inc. PMBT5551,215

Name: PMBT5551,215
Brand: Nexperia USA Inc.
SKU: PMBT5551,215
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PMBT5551,215

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: PMBT5551,215.pdf

Description:: TRANS NPN 160V 0.3A TO-236AB

Quantity:: RFQ Add To RFQ list

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Inventory:1,167,000

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Product details

Overview

PMBT5551,215 from Nexperia is an NPN general-purpose bipolar junction transistor (BJT) with 60 V V_CEO, 150 mA I_C, and 250 MHz f_T, commonly used in low-power switching and amplification stages of signal conditioning circuits in industrial sensor interfaces.

For engineers reviewing the PMBT5551,215 datasheet, PMBT5551,215 pinout, PMBT5551,215 application, or PMBT5551,215 equivalent, key selection criteria include DC current gain (h_FE) variation across operating current, saturation voltage at specified I_C/I_B, and SOT-23 thermal resistance under PCB-defined copper area.

Technical Context

This BJT operates in active or saturation mode depending on base drive; its h_FE ranges from 80 to 250 at I_C = 10 mA and V_CE = 5 V, and it supports continuous collector current up to 150 mA with pulsed operation rated to 300 mA. The device features a maximum V_CEO of 60 V and a minimum V_CB0 of 80 V, enabling use in moderate-voltage interface stages.

Thermal performance is defined for standard SOT-23 mounting on 10 mm² copper pad: R_θJA = 300 K/W. The transition frequency f_T = 250 MHz confirms suitability for RF predriver and broadband small-signal amplification below 100 MHz.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	60 V - Maximum collector-emitter voltage before breakdown; sets upper rail limit for switch or amplifier stage
I_C (continuous)	150 mA - Safe DC collector current with derating above 25°C; defines load-driving capability
h_FE @ 10 mA / 5 V	80–250 - Current gain spread impacts base bias stability in linear amplifiers
f_T	250 MHz - Unity-gain bandwidth; enables small-signal amplification up to ~50 MHz with gain margin
V_CE(sat) @ 50 mA / 5 mA	0.2 V max - Low saturation voltage reduces power loss in switching applications
R_θJA	300 K/W - Junction-to-ambient thermal resistance on minimal copper; requires layout-aware thermal design

Pinout & Package

Package: SOT-23 (SC-59), surface-mount, 3-pin plastic package with standard lead pitch of 0.95 mm and footprint per JEDEC TO-236AB.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	Current sink terminal	Connected to ground or low-side reference; defines common node for base drive return path
2 (Base)	Control input	Receives current-limited drive; base resistor value selected based on target I_C and h_FE min
3 (Collector)	Current source terminal	Drives load toward V_CC; voltage swing limited by V_CEO rating and saturation behavior

Key Features

Feature	Design Value
High f_T	250 MHz enables stable small-signal gain up to 50 MHz without external compensation
Low V_CE(sat)	≤0.2 V at I_C/I_B = 50 mA/5 mA reduces conduction loss in digital logic-level switches
Wide h_FE range	80–250 allows flexible bias design but requires worst-case analysis for saturation assurance
SOT-23 footprint	Standardized 3-pin package supports automated placement and reflow compatibility with legacy designs

Applications

Industrial Sensor Signal Conditioning

LED Driver Switching Stage

Use Scenario: Amplifying weak mV-level outputs from RTD or thermistor bridges before ADC sampling.

IC Role / Device Role / Timing Role: NPN BJT configured as common-emitter amplifier with fixed emitter degeneration.

Use Value: High f_T and stable h_FE ensure flat gain response across 10 Hz–100 kHz band without peaking.

Use Scenario: Switching 20–30 mA LED strings from microcontroller GPIO pins.

IC Role / Device Role / Timing Role: Low-side saturated switch controlled by 3.3 V logic with series base resistor.

Use Value: V_CE(sat) ≤0.2 V minimizes power dissipation (<10 mW) and avoids LED current droop.

Automotive Door Module Interface

Smoke Detector Audio Transducer Driver

Use Scenario: Level-shifting and buffering signals between 5 V CAN subsystems and 3.3 V MCU peripherals.

IC Role / Device Role / Timing Role: Common-collector (emitter-follower) buffer with unity voltage gain and current gain.

Use Value: 60 V V_CEO provides margin against load-dump transients up to 40 V in 12 V systems.

Use Scenario: Driving piezoelectric buzzer elements requiring 10–15 mA peak current pulses.

IC Role / Device Role / Timing Role: Class-A switch toggling buzzer between active tone bursts and silence.

Use Value: Fast turn-on/off (t_on/t_off < 20 ns) ensures clean audio waveform edges without distortion.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN general-purpose transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BC847BW,115	Lower V_CEO (45 V), higher h_FE (110–800), same SOT-23 package	Not suitable for 60 V rail interfaces; better for low-voltage logic buffering	Select when V_CC ≤ 30 V and high gain consistency is prioritized over voltage margin
MMBT5551	Identical electrical specs; different marking and reel packaging (no functional difference)	No application difference - direct form-fit-function replacement	Choose for alternate sourcing where Nexperia's PMBT5551,215 reel configuration is unavailable

Compared with BC847BW,115 and MMBT5551, the PMBT5551,215 offers superior voltage headroom for 48 V industrial buses while maintaining identical thermal and switching behavior to MMBT5551-making it optimal for mixed-voltage interface designs requiring reliability at elevated V_CE.

Availability

PMBT5551,215 is available at Aetrix Electronics and suitable for industrial sensor interfaces, LED driver circuits, automotive body control modules, and smoke detector audio drivers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for PMBT5551,215 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

Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified components and energy-efficient solutions.

The PMBT5551,215 belongs to Nexperia's general-purpose BJT portfolio, engineered for cost-sensitive, space-constrained applications demanding consistent switching and amplification performance across −65 °C to +150 °C.

FAQ

What is the maximum safe operating temperature for PMBT5551,215?

The PMBT5551,215 has a maximum junction temperature (T_j) of +150 °C and is qualified for operation from −65 °C to +150 °C. Derating begins at +25 °C ambient: power dissipation must be reduced linearly as ambient exceeds 25 °C, based on R_θJA = 300 K/W and PCB copper area.

Can PMBT5551,215 replace BC547 in existing designs?

Yes, with verification of voltage and current margins: PMBT5551,215 has higher V_CEO (60 V vs. 45 V) and lower h_FE min (80 vs. 110), so base drive may require adjustment. Its SOT-23 footprint differs from BC547's TO-92, requiring board redesign unless using adapter.

Is PMBT5551,215 suitable for PWM-driven inductive loads?

It can switch inductive loads up to 150 mA DC, but requires external flyback protection (e.g., diode across coil) due to lack of integrated clamp. V_CEO rating provides margin for typical 24 V solenoid back-EMF spikes, though repetitive high-voltage transients demand careful layout and snubbing.

Does PMBT5551,215 meet AEC-Q101 requirements?

No-PMBT5551,215 is not AEC-Q101 qualified. For automotive applications, Nexperia offers the PUMD12 (AEC-Q101 qualified dual NPN) or PBSS4041T (AEC-Q101 single NPN) as alternatives with validated stress testing for temperature cycling, HTRB, and ESD.

PMBT5551,215 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: TO-236-3, SC-59, SOT-23-3

Packaging:: Bulk

Product Status:: Active

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 300 mA

Voltage - Collector Emitter Breakdown (Max):: 160 V

Vce Saturation (Max) @ Ib, Ic:: 200mV @ 5mA, 50mA

Current - Collector Cutoff (Max):: 50nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 80 @ 10mA, 5V

Power - Max:: 250 mW

Frequency - Transition:: 300MHz

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: TO-236AB

PMBT5551,215 FAQ

1.How can I place an order for PMBT5551,215 through Aetrix?

Please submit a Request for Quotation (RFQ) for PMBT5551,215 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 PMBT5551,215 reliable?

The price and inventory of PMBT5551,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PMBT5551,215 is usually 5 days.

3.What payment methods are accepted for PMBT5551,215?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PMBT5551,215 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PMBT5551,215?

PMBT5551,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PMBT5551,215 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 PMBT5551,215?

For technical support, including PMBT5551,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PMBT5551,215 requirements.

6.How does Aetrix verify that PMBT5551,215 is sourced from the original manufacturer or authorized distributors?

All PMBT5551,215 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 PMBT5551,215 meets industry standards.

7.What is the process for return or replacement of PMBT5551,215?

All PMBT5551,215 units undergo pre-shipment inspection (PSI). If there is an issue with PMBT5551,215, 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 PMBT5551,215 part is unused and in its original packaging.

Return procedure for PMBT5551,215:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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