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

onsemi 2SD1624S-TD-E

Name: 2SD1624S-TD-E
Brand: onsemi
SKU: 2SD1624S-TD-E
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2SD1624S-TD-E

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-243AA

Datasheet:: 2SD1624S-TD-E.pdf

Description:: TRANS NPN 50V 3A PCP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

2SD1624S-TD-E from onsemi is an NPN bipolar junction transistor in PCP (SOT-89) package, rated for 50 V V_CEO, 3 A I_C, and low 0.19 V typical V_CE(sat) at I_C = 2 A / I_B = 100 mA. It delivers fast switching (t_on = 70 ns, t_f = 35 ns) and high f_T = 150 MHz, suited for lamp drivers and relay interface circuits in industrial control systems.

For engineers reviewing the 2SD1624S-TD-E datasheet, pinout, applications, or equivalent options, key selection criteria include verified V_CE(sat) performance at 2 A, h_FE rank S (140–280 @ I_C = 100 mA), thermal dissipation capability (1.5 W on ceramic substrate), and Pb-free TD reel packaging compliance.

Technical Context

This NPN transistor employs FBET and MBIT processes to achieve low saturation voltage and wide safe operating area (ASO). Its design targets medium-power linear and switching applications where robust current handling and thermal stability under pulsed loads (I_CP = 6 A, 100 ms) are required.

Electrical behavior is characterized by a minimum h_FE of 100 at 100 mA and 35 at 3 A, confirming gain consistency across operating range. Output capacitance C_ob = 25 pF at V_CB = –10 V enables predictable high-frequency response in driver stages.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	50 V - Maximum collector-emitter blocking voltage in open-base configuration, defining safe DC/peak voltage margin in relay or lamp load switching.
I_C	3 A - Continuous collector current rating, supporting sustained drive of solenoids or LED arrays without derating on 250 mm² ceramic substrate.
V_CE(sat)	0.19 V (typ) at I_C=2 A/I_B=100 mA - Low conduction loss enabling <1.2 W power dissipation in saturated switch operation.
f_T	150 MHz - Gain-bandwidth product confirming suitability for >10 MHz digital signal buffering or PWM-driven analog interfaces.
h_FE Rank S	140–280 at V_CE=2 V, I_C=100 mA - Guaranteed DC current gain range ensuring predictable base drive sizing in linear regulators or amplifier stages.
t_f	35 ns - Fast fall time enabling clean edge transitions in 10–20 MHz switching applications with minimal overlap loss.
P_C (ceramic)	1.5 W - Thermal power limit on standard 250 mm² × 0.8 mm ceramic board, allowing compact heatsinkless designs up to ~1.2 W continuous.

Pinout & Package

Package: PCP (JEITA SC-62 / JEDEC TO-243 / industry-standard SOT-89), surface-mount, 3-terminal plastic case with exposed collector tab for thermal conduction.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Control terminal requiring ~100 mA DC base current to fully saturate at 2 A collector load; compatible with 3.3 V/5 V logic-level drive via series resistor.
2	Collector	Main current output path with thermally enhanced backside metal pad; must be connected to PCB copper pour ≥250 mm² for 1.5 W dissipation.
3	Emitter	Reference terminal tied to system ground or low-side return path; forms common-emitter topology with fixed V_BE(sat) ≈ –1.07 V.

Key Features

Feature	Design Value
Low V_CE(sat)	0.19 V typ at 2 A ensures <0.4 W conduction loss, reducing thermal stress in high-duty-cycle lamp/relay drivers.
Wide ASO	Rated for 6 A pulsed current (100 ms) with no second breakdown, supporting inductive load turn-off without snubbers.
High f_T	150 MHz enables stable operation as a broadband amplifier or high-speed switch in feedback-controlled power stages.
Rank-S h_FE	140–280 gain band minimizes base drive variability across production lots, simplifying consistent bias network design.
Pb-Free TD Reel	1,000 pcs./reel packaging meets RoHS and J-STD-020 moisture sensitivity Level 3 (MSL3) requirements for automated SMT assembly.

Applications

Lamp Driver	Relay Interface
Use Scenario: Driving 12 V automotive incandescent lamps (5–25 W) in body control modules with PWM dimming. IC Role / Device Role / Timing Role: NPN power switch in common-emitter configuration, sinking lamp current to ground during active phase. Use Value: Low 0.19 V V_CE(sat) limits lamp voltage drop to <0.2 V, preserving >98% of supply voltage for consistent brightness control.	Use Scenario: Controlling 24 V industrial relays (coil resistance 200–500 Ω) in PLC output modules. IC Role / Device Role / Timing Role: High-current saturated switch interfacing microcontroller GPIO to relay coil, with flyback diode integration. Use Value: 3 A I_C rating and 6 A pulse capability handle relay inrush currents (>4× steady-state) without saturation collapse or thermal shutdown.
Voltage Regulator Pass Element	DC Motor H-Bridge Low-Side Switch
Use Scenario: Linear pass transistor in adjustable 3–15 V, 1–2 A bench power supplies with thermal foldback protection. IC Role / Device Role / Timing Role: Series-pass element operating in active region, dissipating excess voltage as heat while maintaining load regulation. Use Value: 1.5 W dissipation on ceramic substrate supports 5 V dropout at 2 A without external heatsink, simplifying enclosure design.	Use Scenario: Low-side switch in 12 V brushed DC motor drivers (up to 2 A continuous) for robotics and actuator control. IC Role / Device Role / Timing Role: Fast-switching NPN transistor in half-bridge leg, commutating motor current with minimal dead-time distortion. Use Value: 35 ns fall time and 70 ns turn-on time enable clean 20 kHz PWM operation with <5% duty-cycle distortion at full load.

Lamp Driver

Relay Interface

Use Scenario: Driving 12 V automotive incandescent lamps (5–25 W) in body control modules with PWM dimming.

IC Role / Device Role / Timing Role: NPN power switch in common-emitter configuration, sinking lamp current to ground during active phase.

Use Value: Low 0.19 V V_CE(sat) limits lamp voltage drop to <0.2 V, preserving >98% of supply voltage for consistent brightness control.

Use Scenario: Controlling 24 V industrial relays (coil resistance 200–500 Ω) in PLC output modules.

IC Role / Device Role / Timing Role: High-current saturated switch interfacing microcontroller GPIO to relay coil, with flyback diode integration.

Use Value: 3 A I_C rating and 6 A pulse capability handle relay inrush currents (>4× steady-state) without saturation collapse or thermal shutdown.

Voltage Regulator Pass Element

DC Motor H-Bridge Low-Side Switch

Use Scenario: Linear pass transistor in adjustable 3–15 V, 1–2 A bench power supplies with thermal foldback protection.

IC Role / Device Role / Timing Role: Series-pass element operating in active region, dissipating excess voltage as heat while maintaining load regulation.

Use Value: 1.5 W dissipation on ceramic substrate supports 5 V dropout at 2 A without external heatsink, simplifying enclosure design.

Use Scenario: Low-side switch in 12 V brushed DC motor drivers (up to 2 A continuous) for robotics and actuator control.

IC Role / Device Role / Timing Role: Fast-switching NPN transistor in half-bridge leg, commutating motor current with minimal dead-time distortion.

Use Value: 35 ns fall time and 70 ns turn-on time enable clean 20 kHz PWM operation with <5% duty-cycle distortion at full load.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN medium-power switching applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MJD122G	V_CEO = 100 V, I_C = 8 A, V_CE(sat) = 1.2 V @ 4 A - higher voltage rating but 6× higher saturation voltage.	Preferred for 48 V industrial systems; unsuitable where <0.5 V conduction loss is critical.	Select MJD122G only when higher breakdown voltage outweighs efficiency penalty in high-voltage relay control.
2SC4116S-TD-E	V_CEO = 50 V, I_C = 2 A, V_CE(sat) = 0.25 V @ 1 A - lower current rating and higher saturation voltage than 2SD1624S-TD-E.	Used in lower-power lamp drivers (<15 W); insufficient for 3 A relay coils or 2 A motor loads.	Choose 2SC4116S-TD-E only for space-constrained designs where 2 A max current and SOT-23 footprint are mandatory.

Compared with MJD122G and 2SC4116S-TD-E, the 2SD1624S-TD-E uniquely balances 3 A current, 50 V rating, and ultra-low 0.19 V V_CE(sat) in SOT-89, making it optimal for efficiency-critical 12–24 V industrial switching where thermal headroom and conduction loss are limiting factors.

Availability

2SD1624S-TD-E is available at Aetrix Electronics and suitable for lamp drivers, relay interfaces, and linear voltage regulator pass elements requiring stable component supply, RoHS-compliant packaging, and guaranteed h_FE rank consistency.

Supply support for 2SD1624S-TD-E 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 (Semiconductor Components Industries, LLC) is a global semiconductor supplier focused on energy-efficient electronics, with leadership in power management, analog, sensors, and connectivity solutions.

The 2SD1624S-TD-E belongs to onsemi's general-purpose bipolar transistor family engineered for industrial and automotive-grade medium-power switching, emphasizing low saturation voltage, wide SOA, and robust thermal performance in compact SOT-89 packages.

FAQ

What is the maximum continuous collector current rating for the 2SD1624S-TD-E?

The 2SD1624S-TD-E has a maximum continuous collector current I_C rating of 3 A at T_a = 25°C when mounted on a 250 mm² ceramic substrate. This rating assumes no additional heatsinking and accounts for thermal derating above ambient temperature per the PC–Ta curve in the datasheet.

Does the 2SD1624S-TD-E have Pb-free and halogen-free compliance?

Yes, the 2SD1624S-TD-E carries the "-E" suffix indicating Pb-free compliance per RoHS Directive 2011/65/EU. It is not halogen-free; for halogen-free versions, the "-H" suffix variant (2SD1624S-TD-H) must be selected.

What is the h_FE range for the 2SD1624S-TD-E, and how is it binned?

The 2SD1624S-TD-E is ranked "S", specifying a DC current gain h_FE range of 140 to 280 measured at V_CE = 2 V and I_C = 100 mA. This binning ensures predictable base drive requirements across production lots without need for post-manufacture sorting.

Can the 2SD1624S-TD-E replace the 2SB1124S-TD-E in circuit designs?

No - the 2SD1624S-TD-E is an NPN transistor, while the 2SB1124S-TD-E is its complementary PNP counterpart. They serve opposite polarity roles and are not interchangeable; using one in place of the other will result in circuit failure due to reversed current flow and biasing.

What is the thermal resistance junction-to-ambient (R_θJA) for the 2SD1624S-TD-E?

The datasheet specifies a maximum junction temperature T_j of 150°C and a collector dissipation P_C of 1.5 W on a 250 mm² ceramic substrate. From this, R_θJA is calculated as approximately 67°C/W under those exact mounting conditions - not applicable to standard FR-4 PCBs without thermal enhancement.

2SD1624S-TD-E Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-243AA

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 3 A

Voltage - Collector Emitter Breakdown (Max):: 50 V

Vce Saturation (Max) @ Ib, Ic:: 500mV @ 100mA, 2A

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

DC Current Gain (hFE) (Min) @ Ic, Vce:: 140 @ 100mA, 2V

Power - Max:: 500 mW

Frequency - Transition:: 150MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PCP

2SD1624S-TD-E FAQ

1.How can I place an order for 2SD1624S-TD-E through Aetrix?

Please submit a Request for Quotation (RFQ) for 2SD1624S-TD-E 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 2SD1624S-TD-E reliable?

The price and inventory of 2SD1624S-TD-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2SD1624S-TD-E is usually 5 days.

3.What payment methods are accepted for 2SD1624S-TD-E?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2SD1624S-TD-E transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2SD1624S-TD-E?

2SD1624S-TD-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2SD1624S-TD-E 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 2SD1624S-TD-E?

For technical support, including 2SD1624S-TD-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2SD1624S-TD-E requirements.

6.How does Aetrix verify that 2SD1624S-TD-E is sourced from the original manufacturer or authorized distributors?

All 2SD1624S-TD-E 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 2SD1624S-TD-E meets industry standards.

7.What is the process for return or replacement of 2SD1624S-TD-E?

All 2SD1624S-TD-E units undergo pre-shipment inspection (PSI). If there is an issue with 2SD1624S-TD-E, 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 2SD1624S-TD-E part is unused and in its original packaging.

Return procedure for 2SD1624S-TD-E:

1.Submit a request within 90 days.

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

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