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

Nexperia USA Inc. PMBTA45,215

Name: PMBTA45,215
Brand: Nexperia USA Inc.
SKU: PMBTA45,215
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PMBTA45,215

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

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

Datasheet:: PMBTA45,215.pdf

Description:: TRANS NPN 500V 0.15A TO-236AB

Quantity:: RFQ Add To RFQ list

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Product details

Overview

PMBTA45 from Nexperia is an NPN high-voltage low-V_CEsat transistor in SOT23 package, rated for 500 V V_CEO, 150 mA I_C, and 65 mV typical V_CEsat at I_C = 50 mA / I_B = 6 mA. It serves as a high-efficiency switching element in flyback converters and automotive motor management circuits where high breakdown voltage and minimal conduction loss are critical.

For engineers reviewing the PMBTA45 datasheet, PMBTA45 pinout, PMBTA45 application, or PMBTA45 equivalent, this page delivers verified electrical parameters, thermal derating behavior, AEC-Q101 qualification status, and real-world use context for high-voltage discrete selection in LED drivers and telecom hook-switch designs.

Technical Context

This NPN transistor features a high-voltage epitaxial planar structure enabling stable operation up to 500 V collector-emitter peak voltage (V_CESM) with low leakage-ICBO ≤ 10 µA at T_j = 150 °C. Its DC current gain (h_FE) maintains 50–100 across I_C = 30–50 mA at 25 °C, supporting robust base drive design in pulse-width modulated topologies.

Switching performance is characterized by t_on = 2780 ns and t_off = 4200 ns under defined test conditions (V_CC = 20 V, I_Boff = −10 mA), while f_T = 35 MHz confirms suitability for medium-frequency switching applications up to several hundred kHz.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	500 V - supports primary-side switching in offline flyback converters without external snubbers
I_C	150 mA continuous - sufficient for driving small solenoids, LED chains, or telecom line interface loads
V_CEsat	65 mV typ. at I_C/I_B = 5 - reduces conduction loss and self-heating in high-duty-cycle operation
h_FE	50–100 at I_C = 30–50 mA - enables predictable base resistor sizing for reliable saturation across temperature
R_th(j-a)	417 K/W on FR4 PCB - defines maximum power dissipation limit of ~300 mW at 25 °C ambient
AEC-Q101	Qualified - validated for automotive motor control and body electronics per stress test requirements
f_T	35 MHz - supports stable linear amplification or fast switching up to ~300 kHz with margin

Pinout & Package

SOT23 plastic surface-mounted package: 3-terminal, 1.9 mm pitch, 2.9 mm × 1.3 mm × 1.0 mm body; standard footprint compatible with reflow and wave soldering per Figures 13–14.

Pin/Terminal	Circuit Role	Design Meaning
1	Base (B)	Control input requiring ~6 mA drive for full saturation at 50 mA collector current
2	Emitter (E)	Common reference node; tied to ground or low-side return path in switch configurations
3	Collector (C)	High-voltage output node; handles up to 500 V transient spikes in flyback or inductive load switching

Key Features

Feature	Design Value
High voltage rating	500 V V_CEO enables direct replacement of older 400 V transistors in legacy ballast and SMPS designs
Low V_CEsat	65 mV typ. cuts conduction loss by >40% vs. standard general-purpose transistors at same I_C
High h_FE at high I_C	h_FE ≥ 50 maintained up to 50 mA ensures stable gain in LED driver constant-current regulation
AEC-Q101 qualification	Validated for automotive underhood environments including temperature cycling and HTRB testing
Thermal resistance	R_th(j-sp) = 70 K/W enables localized heat extraction via solder point to copper pour

Applications

Electronic Ballasts

LED Chain Drivers

Use Scenario: High-frequency AC lamp ignition and regulation in compact fluorescent lamps.

IC Role / Device Role / Timing Role: Primary-side switch controlling resonant tank current in half-bridge topology.

Use Value: 500 V rating eliminates need for external clamping; low V_CEsat improves efficiency above 90% at 25 kHz.

Use Scenario: Constant-current switching for multi-LED strings in signage and architectural lighting.

IC Role / Device Role / Timing Role: Low-side PWM switch regulating average LED current in buck-derived topology.

Use Value: Stable h_FE across temperature ensures consistent dimming linearity over −40 °C to +105 °C ambient.

Automotive Motor Management

Flyback Converters

Use Scenario: Window lift, seat adjuster, and HVAC damper actuation in passenger vehicles.

IC Role / Device Role / Timing Role: Low-side driver for brushed DC motors with inductive kick suppression.

Use Value: AEC-Q101 qualification and 150 °C T_j rating support under-hood deployment without derating.

Use Scenario: Primary-side switch in isolated 5–24 W offline AC/DC adapters for IoT sensors.

IC Role / Device Role / Timing Role: Energy-transfer switch operating at 65–100 kHz with ZVS capability.

Use Value: 500 V V_CESM withstands reflected flyback spikes up to 450 V without avalanche stress.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage NPN switching applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BCV61B,215	Lower V_CEO = 300 V; higher V_CEsat = 150 mV; same SOT23 package	Not suitable for >350 V flyback primaries; acceptable for 12–24 V automotive loads only	Select when cost sensitivity outweighs voltage headroom and conduction loss targets
PMBT2907A,215	PNP complement; V_CEO = 60 V; not a functional substitute for high-voltage NPN operation	Used in complementary emitter-follower stages-not interchangeable in high-side or flyback roles	Only consider for dual-rail bias networks where polarity and voltage match the circuit topology

Compared with BCV61B,215 and PMBT2907A,215, PMBTA45 uniquely delivers 500 V capability with sub-100 mV saturation voltage-making it irreplaceable in >400 V primary-switching applications where efficiency and reliability are co-constrained.

Availability

PMBTA45 is available at Aetrix Electronics and suitable for electronic ballasts, LED chain drivers, automotive motor management systems, and flyback converters requiring stable component supply across industrial and automotive production cycles.

Supply support for PMBTA45 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 manufacturing rooted in process control and automotive-grade quality systems.

PMBTA45 belongs to Nexperia's high-voltage bipolar transistor product line, engineered specifically for energy-efficient switching in lighting, power conversion, and automotive subsystems where voltage resilience and low-loss operation are non-negotiable.

FAQ

What is the maximum safe operating voltage for PMBTA45 in continuous DC mode?

The absolute maximum collector-emitter voltage (V_CEO) is 500 V with open base, and the peak voltage (V_CESM) is also rated at 500 V under V_BE = 0 V conditions. For reliable long-term operation, design margins should limit steady-state V_CE to ≤ 400 V to accommodate transients and temperature-induced drift.

Does PMBTA45 require a heatsink in standard SOT23 mounting?

No external heatsink is required. With R_th(j-a) = 417 K/W on a single-sided FR4 PCB, the device dissipates up to 300 mW at 25 °C ambient. At 150 mW dissipation (typical at I_C = 150 mA and V_CEsat ≈ 65 mV), junction temperature rise is ~63 K-well within the 150 °C T_j limit.

How does AEC-Q101 qualification impact PMBTA45's use in non-automotive applications?

AEC-Q101 qualification confirms extended lifetime reliability under accelerated stress (HTOL, TC, HTRB), making PMBTA45 especially suited for industrial equipment with >10-year service life expectations. It does not restrict use outside automotive-it simply guarantees higher confidence in parametric stability and failure rate.

Can PMBTA45 replace BC817-40 in a 24 V relay driver?

Yes-but with caution. While both are NPN SOT23 transistors, PMBTA45's 500 V rating far exceeds relay coil suppression needs, and its lower V_CEsat (65 mV vs. ~150 mV) reduces power loss. However, its h_FE is lower at low I_C; verify base drive sufficiency at I_C < 10 mA using the h_FE curve in Figure 3.

PMBTA45,215 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 150 mA

Voltage - Collector Emitter Breakdown (Max):: 500 V

Vce Saturation (Max) @ Ib, Ic:: 90mV @ 6mA, 50mA

Current - Collector Cutoff (Max):: 100nA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 50 @ 50mA, 10V

Power - Max:: 300 mW

Frequency - Transition:: 35MHz

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: TO-236AB

PMBTA45,215 FAQ

1.How can I place an order for PMBTA45,215 through Aetrix?

Please submit a Request for Quotation (RFQ) for PMBTA45,215 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 PMBTA45,215 reliable?

The price and inventory of PMBTA45,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PMBTA45,215 is usually 5 days.

3.What payment methods are accepted for PMBTA45,215?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PMBTA45,215 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PMBTA45,215?

PMBTA45,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PMBTA45,215 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 PMBTA45,215?

For technical support, including PMBTA45,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PMBTA45,215 requirements.

6.How does Aetrix verify that PMBTA45,215 is sourced from the original manufacturer or authorized distributors?

All PMBTA45,215 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 PMBTA45,215 meets industry standards.

7.What is the process for return or replacement of PMBTA45,215?

All PMBTA45,215 units undergo pre-shipment inspection (PSI). If there is an issue with PMBTA45,215, 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 PMBTA45,215 part is unused and in its original packaging.

Return procedure for PMBTA45,215:

1.Submit a request within 90 days.

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

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