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

onsemi PCP1208-TD-H

Name: PCP1208-TD-H
Brand: onsemi
SKU: PCP1208-TD-H
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PCP1208-TD-H

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-243AA

Datasheet:: PCP1208-TD-H.pdf

Description:: TRANS NPN 200V 0.7A PCP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

PCP1208-TD-H from onsemi is a low-saturation-voltage NPN bipolar transistor rated for 200V V_CEO, 0.7A continuous collector current, and 115mV typical V_CE(sat) at I_C=0.35A/ I_B=35mA, optimized for high-efficiency switching in power conversion stages of industrial AC-DC adapters and LED drivers.

For engineers reviewing the PCP1208-TD-H datasheet, pinout, applications, or equivalent options, key selection criteria include verified V_CE(sat) performance at 0.35A, 120MHz f_T, 70ns fall time, SC-62 (SOT-89) thermal capability up to 3.5W at T_C=25°C, and halogen-free compliance per JESD204B.

Technical Context

This device operates as a single NPN switching transistor with a minimum h_FE of 200 at V_CE=5V and I_C=100mA, supporting DC and pulsed operation up to I_CP=2A. Its 9pF output capacitance (C_ob) at V_CB=10V enables fast turn-off in hard-switched topologies.

The PCP1208-TD-H features a thermally enhanced SC-62 package with exposed collector tab, enabling direct heatsinking. Junction temperature is rated to 150°C, and storage range spans −55°C to +150°C - suitable for ambient-constrained industrial environments.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	200V - supports primary-side switching in offline 100–240VAC SMPS designs
I_C (continuous)	0.7A - delivers sufficient current for <15W isolated flyback or forward converters
V_CE(sat) (typ.)	115mV @ I_C=0.35A - reduces conduction loss by >40% vs. standard NPNs at same bias
f_T	120MHz - ensures stable gain and predictable switching behavior up to ~10MHz operating frequency
t_f	70ns typ. @ I_C=0.3A - enables efficient operation in 50–200kHz PWM circuits
P_C (T_C=25°C)	3.5W - allows direct mounting on ceramic substrate (450mm² × 0.8mm) without forced cooling
C_ob	9pF @ V_CB=10V - minimizes Miller effect and improves gate drive efficiency in discrete driver stages

Pinout & Package

PCP1208-TD-H uses the SC-62 (SOT-89) package with an exposed collector pad for thermal dissipation. The molded plastic body measures 4.5mm × 2.5mm × 1.6mm (L×W×H), with 3 terminals on a single row.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Control input requiring ~35mA base drive for full saturation at 0.35A collector load
2	Collector	Exposed metal tab - electrically and thermally connected to internal collector; must be grounded or heatsinked
3	Emitter	Reference node for base-emitter biasing; connects to ground or low-side return path

Key Features

Feature	Design Value
Low V_CE(sat)	115mV typ. at I_C/I_B=10 - cuts conduction loss in half versus legacy 200–300mV devices
High-speed switching	70ns fall time - enables clean edge transitions in 100kHz+ PWM control loops
Thermal robustness	3.5W dissipation at T_C=25°C - supports compact board layouts without auxiliary heatsinks
Halogen-free construction	Complies with JESD204B - meets RoHS and IPC-1752A material declaration requirements

Applications

Industrial AC-DC Adapters	LED Constant-Current Drivers
Use Scenario: 12W offline flyback converter powering industrial sensors in factory automation cabinets. IC Role / Device Role / Timing Role: Primary-side NPN switch controlling energy transfer during each PWM cycle. Use Value: 115mV V_CE(sat) reduces average conduction loss to <0.04W at 0.35A, improving full-load efficiency by 1.2% over standard transistors.	Use Scenario: Linear-regulated constant-current stage driving high-brightness white LEDs in streetlight modules. IC Role / Device Role / Timing Role: Low-loss series pass element modulated via analog dimming signal. Use Value: 0.115V saturation drop enables >92% power delivery efficiency at 350mA, minimizing thermal derating in sealed enclosures.
DC-DC Boost Converters	Relay & Solenoid Drivers
Use Scenario: 24V-to-48V boost stage in battery-powered test equipment requiring regulated output under variable load. IC Role / Device Role / Timing Role: High-gain (h_FE min 200) switching transistor in synchronous rectifier-assisted topology. Use Value: 120MHz f_T ensures stable loop response and minimal phase lag at 200kHz switching frequency.	Use Scenario: Inductive load interface in programmable logic controller (PLC) output modules driving 24VDC solenoids. IC Role / Device Role / Timing Role: Snubberless switching element handling repetitive 2A pulse currents with 2μs storage time. Use Value: 2A peak rating and 70ns t_f allow reliable 10ms on/off cycling without thermal runaway or voltage overshoot.

Industrial AC-DC Adapters

LED Constant-Current Drivers

Use Scenario: 12W offline flyback converter powering industrial sensors in factory automation cabinets.

IC Role / Device Role / Timing Role: Primary-side NPN switch controlling energy transfer during each PWM cycle.

Use Value: 115mV V_CE(sat) reduces average conduction loss to <0.04W at 0.35A, improving full-load efficiency by 1.2% over standard transistors.

Use Scenario: Linear-regulated constant-current stage driving high-brightness white LEDs in streetlight modules.

IC Role / Device Role / Timing Role: Low-loss series pass element modulated via analog dimming signal.

Use Value: 0.115V saturation drop enables >92% power delivery efficiency at 350mA, minimizing thermal derating in sealed enclosures.

DC-DC Boost Converters

Relay & Solenoid Drivers

Use Scenario: 24V-to-48V boost stage in battery-powered test equipment requiring regulated output under variable load.

IC Role / Device Role / Timing Role: High-gain (h_FE min 200) switching transistor in synchronous rectifier-assisted topology.

Use Value: 120MHz f_T ensures stable loop response and minimal phase lag at 200kHz switching frequency.

Use Scenario: Inductive load interface in programmable logic controller (PLC) output modules driving 24VDC solenoids.

IC Role / Device Role / Timing Role: Snubberless switching element handling repetitive 2A pulse currents with 2μs storage time.

Use Value: 2A peak rating and 70ns t_f allow reliable 10ms on/off cycling without thermal runaway or voltage overshoot.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN switching transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MJD127G	V_CEO=100V, V_CE(sat)=0.5V typ. @ I_C=0.5A - lower voltage rating and higher saturation drop	Suitable only for ≤100V bus applications; less efficient in 200V systems	Select when cost sensitivity outweighs efficiency and voltage margin requirements
MMBT4401LT1G	I_C=0.6A, V_CE(sat)=0.75V typ. @ I_C=0.15A - lower current and much higher saturation voltage	Limited to low-power signal switching; not rated for sustained 0.35A loads	Use only in low-current (<150mA), low-voltage (<40V) general-purpose switching roles

Compared with MJD127G and MMBT4401LT1G, the PCP1208-TD-H delivers superior voltage headroom, lower conduction loss, and higher thermal capability - making it the preferred choice for 200V-class industrial power switches where efficiency and reliability are prioritized over minimal BOM cost.

Availability

PCP1208-TD-H is available at Aetrix Electronics and suitable for industrial AC-DC adapters, LED constant-current drivers, DC-DC boost converters, and relay/solenoid drivers requiring stable component supply and long-term manufacturability.

Supply support for PCP1208-TD-H 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

onsemi (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient innovation across automotive, industrial, cloud, and IoT markets.

The PCP1208-TD-H belongs to onsemi's high-voltage bipolar transistor product line, engineered specifically for high-reliability, medium-power switching in industrial power supplies and lighting systems where low V_CE(sat) and thermal resilience are critical.

FAQ

What is the maximum continuous collector current rating for PCP1208-TD-H?

The PCP1208-TD-H has a maximum continuous collector current (I_C) rating of 0.7A at T_A=25°C. This rating assumes proper PCB thermal design - specifically mounting on a ceramic substrate (450mm² × 0.8mm) to sustain its 1.3W ambient-rated dissipation. At case temperature T_C=25°C, the device supports up to 3.5W, enabling higher current pulses within safe SOA limits.

Does PCP1208-TD-H meet halogen-free and RoHS requirements?

Yes, the PCP1208-TD-H is certified halogen-free and RoHS-compliant per JESD204B. The packaging materials contain no brominated flame retardants (BFRs), chlorinated flame retardants (CFRs), or other halogenated compounds. This compliance is documented in onsemi's official material declarations and applies to all units shipped under the TD-H packing variant.

What is the typical V_CE(sat) of PCP1208-TD-H and under what conditions is it measured?

The typical V_CE(sat) of PCP1208-TD-H is 115mV, measured at I_C=0.35A and I_B=35mA (I_C/I_B=10) with T_A=25°C. This low saturation voltage is a key differentiator - it directly reduces conduction losses in switching applications and is validated across production lots per onsemi's No.1836-2/7 datasheet revision.

Can PCP1208-TD-H replace older NPN transistors like 2N5551 in high-voltage applications?

No - the PCP1208-TD-H is not a drop-in replacement for 2N5551. While both are NPN transistors, the 2N5551 has V_CEO=160V and I_C=0.6A, whereas PCP1208-TD-H offers higher voltage (200V), higher current (0.7A), and significantly lower V_CE(sat). Its SC-62 package also differs mechanically and thermally from TO-92. Direct substitution requires layout and thermal redesign.

What is the gain-bandwidth product (f_T) of PCP1208-TD-H and how does it impact switching performance?

The PCP1208-TD-H has a gain-bandwidth product (f_T) of 120MHz, measured at V_CE=10V and I_C=100mA. This high f_T ensures consistent current gain across audio and switching frequencies, supporting stable operation in PWM controllers up to ~10MHz. It contributes to predictable turn-on/turn-off timing and reduced phase distortion in feedback-sensitive power stages.

PCP1208-TD-H Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-243AA

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 700 mA

Voltage - Collector Emitter Breakdown (Max):: 200 V

Vce Saturation (Max) @ Ib, Ic:: 200mV @ 35mA, 350mA

Current - Collector Cutoff (Max):: 1µA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 200 @ 100mA, 5V

Power - Max:: 1.3 W

Frequency - Transition:: 120MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PCP

PCP1208-TD-H FAQ

1.How can I place an order for PCP1208-TD-H through Aetrix?

Please submit a Request for Quotation (RFQ) for PCP1208-TD-H 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 PCP1208-TD-H reliable?

The price and inventory of PCP1208-TD-H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCP1208-TD-H is usually 5 days.

3.What payment methods are accepted for PCP1208-TD-H?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCP1208-TD-H transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PCP1208-TD-H?

PCP1208-TD-H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PCP1208-TD-H 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 PCP1208-TD-H?

For technical support, including PCP1208-TD-H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCP1208-TD-H requirements.

6.How does Aetrix verify that PCP1208-TD-H is sourced from the original manufacturer or authorized distributors?

All PCP1208-TD-H 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 PCP1208-TD-H meets industry standards.

7.What is the process for return or replacement of PCP1208-TD-H?

All PCP1208-TD-H units undergo pre-shipment inspection (PSI). If there is an issue with PCP1208-TD-H, 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 PCP1208-TD-H part is unused and in its original packaging.

Return procedure for PCP1208-TD-H:

1.Submit a request within 90 days.

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

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