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

onsemi 2SD1624S-TD-H

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

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Part No.:: 2SD1624S-TD-H

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-243AA

Datasheet:: 2SD1624S-TD-H.pdf

Description:: TRANS NPN 50V 3A PCP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

2SD1624S-TD-H from onsemi is an NPN bipolar junction transistor in PCP (SOT-89) package, rated for 50 V V_CEO, 3 A I_C, and 500 mW P_C (on ceramic substrate), with low V_CE(sat) of 0.19 V at I_C = 2 A / I_B = 100 mA, used in lamp drivers and relay interface circuits.

For engineers reviewing the 2SD1624S-TD-H datasheet, pinout, applications, or equivalent options, key selection criteria include verified h_FE range (280–560 for Rank T), fast switching (t_on = 70 ns, t_f = 35 ns), Pb-free + halogen-free compliance, and SC-62 mechanical compatibility.

Technical Context

This NPN transistor employs FBET and MBIT processes to achieve low saturation voltage and high current gain linearity across operating ranges. It supports DC and pulsed operation up to 6 A (I_CP) with guaranteed f_T = 150 MHz at V_CE = −10 V, I_C = −50 mA - enabling use in medium-speed switching and linear amplification stages.

Thermal performance is specified for mounting on a 250 mm² × 0.8 mm ceramic substrate, delivering 1.5 W P_C derated to 500 mW at T_a = 25°C. The device features robust ASO (Safe Operating Area) and operates across T_stg = −55°C to +150°C, supporting industrial ambient conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	50 V - Maximum collector-emitter blocking voltage under open-base condition; defines safe voltage headroom in relay/lamp driver designs.
I_C	3 A - Continuous DC collector current rating; supports load switching up to ~3 A without forced cooling on ceramic substrate.
V_CE(sat)	0.19 V (typ) at I_C = 2 A / I_B = 100 mA - Low conduction loss reduces power dissipation and thermal stress in saturated-switch applications.
h_FE	280–560 (Rank T) at V_CE = −2 V, I_C = −100 mA - Tight DC gain binning ensures predictable base drive requirements and stable biasing.
f_T	150 MHz - Enables reliable operation in medium-frequency switching (e.g., PWM dimming up to ~10 MHz fundamental).
t_on/t_f	70 ns / 35 ns - Fast turn-on and fall times reduce switching losses and support clean edge transitions in digital interface circuits.

Pinout & Package

2SD1624S-TD-H uses the PCP package (JEITA/SC-62, JEDEC/SOT-89, TO-243), with standardized 3-pin surface-mount footprint optimized for thermal transfer via exposed collector tab. Dimensions: 4.5 mm × 2.5 mm × 1.6 mm (L×W×H), mass = 0.058 g.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Control input node; requires current-limited drive (e.g., 100 mA max for 2 A I_C) to ensure saturation without overdrive.
2	Collector	Main power output terminal; electrically and thermally connected to exposed metal tab - must be routed to ground plane or heatsink pad.
3	Emitter	Reference node for load return path; connects directly to system GND or load common in low-side switch configurations.

Key Features

Feature	Design Value
Low V_CE(sat)	0.19 V typ at I_C = 2 A enables <100 mW conduction loss - critical for efficiency in battery-powered lamp/relay drivers.
High h_FE consistency	Rank T (280–560) minimizes base drive variation across production lots, simplifying gate/base driver design and BOM control.
Fast switching	70 ns t_on and 35 ns t_f support clean signal edges in 1–5 MHz PWM control loops without added snubbing.
Robust ASO	Rated for 3 A DC and 6 A pulse (100 ms) with defined SOA curve - allows safe operation under transient overload in industrial controls.

Applications

Lamp Driver Circuit	Relay Interface Module
Use Scenario: Driving 12 V incandescent or LED lamps in automotive interior lighting or industrial panel indicators. IC Role / Device Role / Timing Role: NPN low-side switch controlling lamp current path to ground; operates in saturation mode with fixed base drive. Use Value: Low V_CE(sat) (0.19 V) limits power loss to <400 mW at 2 A, reducing thermal load on PCB and enabling compact layout.	Use Scenario: Activating 5–24 V DC electromagnetic relays in PLC I/O modules or HVAC control panels. IC Role / Device Role / Timing Role: High-current switch providing coil current (typically 50–200 mA) with fast turn-off to suppress back-EMF-induced contact arcing. Use Value: 35 ns fall time ensures rapid de-energization, improving relay lifetime and reducing EMI during switching transitions.
Voltage Regulator Pass Element	Electrical Equipment Protection Stage
Use Scenario: Series pass transistor in linear 5 V/3.3 V regulators powering microcontrollers or sensors in embedded systems. IC Role / Device Role / Timing Role: Linear-mode current amplifier regulating output voltage via feedback-controlled base bias; dissipates excess power as heat. Use Value: 1.5 W P_C on ceramic substrate supports >1 W continuous dissipation - sufficient for 500 mA @ 2 V dropout without external heatsink.	Use Scenario: Overcurrent protection switch in power supply outputs or motor driver enable paths for factory automation equipment. IC Role / Device Role / Timing Role: Current-limiting switch activated by fault-detection circuitry; handles short-circuit pulses up to 6 A for 100 ms. Use Value: Wide SOA and 150°C T_j rating allow temporary overload handling while maintaining reliability under intermittent fault conditions.

Lamp Driver Circuit

Relay Interface Module

Use Scenario: Driving 12 V incandescent or LED lamps in automotive interior lighting or industrial panel indicators.

IC Role / Device Role / Timing Role: NPN low-side switch controlling lamp current path to ground; operates in saturation mode with fixed base drive.

Use Value: Low V_CE(sat) (0.19 V) limits power loss to <400 mW at 2 A, reducing thermal load on PCB and enabling compact layout.

Use Scenario: Activating 5–24 V DC electromagnetic relays in PLC I/O modules or HVAC control panels.

IC Role / Device Role / Timing Role: High-current switch providing coil current (typically 50–200 mA) with fast turn-off to suppress back-EMF-induced contact arcing.

Use Value: 35 ns fall time ensures rapid de-energization, improving relay lifetime and reducing EMI during switching transitions.

Voltage Regulator Pass Element

Electrical Equipment Protection Stage

Use Scenario: Series pass transistor in linear 5 V/3.3 V regulators powering microcontrollers or sensors in embedded systems.

IC Role / Device Role / Timing Role: Linear-mode current amplifier regulating output voltage via feedback-controlled base bias; dissipates excess power as heat.

Use Value: 1.5 W P_C on ceramic substrate supports >1 W continuous dissipation - sufficient for 500 mA @ 2 V dropout without external heatsink.

Use Scenario: Overcurrent protection switch in power supply outputs or motor driver enable paths for factory automation equipment.

IC Role / Device Role / Timing Role: Current-limiting switch activated by fault-detection circuitry; handles short-circuit pulses up to 6 A for 100 ms.

Use Value: Wide SOA and 150°C T_j rating allow temporary overload handling while maintaining reliability under intermittent fault conditions.

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	Higher V_CEO (80 V), same I_C (3 A), but higher V_CE(sat) (0.5 V min at 2 A); TO-252 package.	Preferred where higher voltage margin is required (e.g., 48 V systems); less efficient at low-voltage loads due to higher saturation loss.	Select MJD127G only if >60 V blocking capability is needed; otherwise 2SD1624S-TD-H offers better efficiency and smaller footprint.
2SD1758K-TL-E	Same PCP package, identical pinout, but lower h_FE range (120–240), higher V_CE(sat) (0.25 V typ), and no halogen-free option.	Suitable for cost-sensitive designs where tight gain control or RoHS+halogen-free compliance is not mandatory.	Choose 2SD1624S-TD-H when halogen-free compliance, higher h_FE, or lower V_CE(sat) is required for precision drive or thermal-limited layouts.

Compared with MJD127G and 2SD1758K-TL-E, the 2SD1624S-TD-H delivers superior efficiency (0.19 V vs ≥0.25 V V_CE(sat)), tighter h_FE binning (Rank T), and full halogen-free compliance - making it optimal for space-constrained, thermally sensitive, and environmentally regulated lamp/relay driver designs.

Availability

2SD1624S-TD-H is available at Aetrix Electronics and suitable for lamp drivers, relay interfaces, and voltage regulator pass elements requiring stable component supply, long-term lifecycle support, and consistent halogen-free compliance.

Supply support for 2SD1624S-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 (Semiconductor Components Industries, LLC) is a global semiconductor supplier focused on energy-efficient innovation for automotive, industrial, cloud, and IoT applications.

The 2SD1624S-TD-H belongs to onsemi's general-purpose bipolar transistor product line, engineered for high-reliability discrete switching and amplification in industrial control, power management, and electromechanical interface circuits.

FAQ

What is the package type and lead finish of 2SD1624S-TD-H?

The 2SD1624S-TD-H uses the PCP package (equivalent to SOT-89/SC-62), with an exposed collector tab for thermal conduction. It is Pb-free and halogen-free, compliant with J-STD-609 Class 3 moisture sensitivity level (MSL-3), and shipped in 1,000 pcs./reel tape-and-reel packaging. This finish ensures RoHS and ELV compliance for automotive and industrial end equipment.

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

The 2SD1624S-TD-H is ranked as "T", meaning its DC current gain h_FE is guaranteed between 280 and 560 at V_CE = −2 V and I_C = −100 mA. This binning is performed per JEDEC JESD22-A111 test flow and marked on the device body. Rank T provides predictable base drive requirements and reduces design margining versus broader-gain variants like Rank S or U.

Can 2SD1624S-TD-H replace 2SD1624S-TD-E in existing designs?

Yes - the 2SD1624S-TD-H is a direct drop-in replacement for 2SD1624S-TD-E, sharing identical electrical specifications, package dimensions, pinout, and thermal characteristics. The only difference is the halogen-free construction of the -H variant, which meets stricter environmental standards without impacting performance or layout. No PCB or schematic changes are required.

What is the maximum pulsed collector current rating for 2SD1624S-TD-H?

The 2SD1624S-TD-H supports I_CP = −6 A for pulse widths up to 100 ms, as specified under single-pulse conditions with duty cycle ≤1%. This rating assumes mounting on a 250 mm² × 0.8 mm ceramic substrate. For longer pulses or higher duty cycles, derating per the P_C vs. T_a curve is required to maintain T_j ≤ 150°C.

Does 2SD1624S-TD-H require a heatsink in typical 2 A switching applications?

In typical 2 A saturated-switch applications with 100% duty cycle, the 2SD1624S-TD-H dissipates ~380 mW (based on V_CE(sat) = 0.19 V). When mounted on a 250 mm² ceramic substrate, its thermal resistance allows operation at T_a ≤ 75°C without additional heatsinking. For ambient temperatures above 75°C or extended continuous operation, a minimal copper pour or small thermal pad is recommended.

2SD1624S-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):: 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-H FAQ

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

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

The price and inventory of 2SD1624S-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 2SD1624S-TD-H is usually 5 days.

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

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

Note: Certain payment methods may incur a processing fee.

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

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

Once your 2SD1624S-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 2SD1624S-TD-H?

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

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

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

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

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

Return procedure for 2SD1624S-TD-H:

1.Submit a request within 90 days.

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

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