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

onsemi 2SD1815S-TL-H

Name: 2SD1815S-TL-H
Brand: onsemi
SKU: 2SD1815S-TL-H
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2SD1815S-TL-H

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Datasheet:: 2SD1815S-TL-H.pdf

Description:: TRANS NPN 100V 3A TP-FA

Quantity:: RFQ Add To RFQ list

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Product details

Overview

2SD1815S-TL-H from onsemi is an NPN bipolar junction transistor in TP-FA (SC-63/TO-252) package, rated for −100 V V_CEO, 3 A I_C, and low 150–400 mV V_CE(sat) at I_C = −1.5 A / I_B = −0.15 A. It delivers high f_T of 130–180 MHz and fast switching (t_on = 100 ns, t_f = 50 ns), optimized for high-current switching in relay drivers and DC-DC converters.

For engineers reviewing the 2SD1815S-TL-H datasheet, pinout, applications, or equivalent options, key selection criteria include verified V_CE(sat) performance at 1.5 A, h_FE linearity across 0.5–2 A, SC-63 thermal dissipation capability (20 W at T_c = 25°C), and halogen-free compliance per ordering suffix "-H".

Technical Context

This NPN transistor uses epitaxial planar construction with optimized base doping to achieve tight h_FE distribution (Rank S: 140–280 at I_C = −0.5 A) and low saturation voltage. Its gain-bandwidth product supports stable high-frequency switching up to 180 MHz under V_CE = −10 V / I_C = −0.5 A conditions.

The device operates within a −55°C to +150°C storage range and 150°C maximum junction temperature, with thermal resistance R_θJC enabling 20 W continuous dissipation at case temperature 25°C. Package TP-FA provides dual collector terminals (pins 2 & 4) for enhanced current handling and reduced thermal impedance.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−100 V - Withstands 100 V collector-emitter blocking voltage in open-base condition, suitable for 48 V and 72 V industrial bus switching.
I_C	−3 A - Continuous collector current rating enables direct drive of 2–3 A solenoid loads without external amplification.
V_CE(sat)	150–400 mV @ I_C=−1.5 A/I_B=−0.15 A - Low saturation voltage minimizes conduction loss and self-heating in high-duty-cycle PWM applications.
f_T	130–180 MHz - Supports clean square-wave switching up to ~100 MHz fundamental frequency in resonant converters.
t_on/t_f	100 ns / 50 ns - Fast turn-on and fall times reduce switching transition losses in hard-switched topologies.
h_FE	140–280 @ I_C=−0.5 A - Tight DC current gain binning ensures predictable base drive requirements across production lots.
C_ob	25–40 pF @ V_CB=−10 V - Low output capacitance limits Miller effect and improves high-frequency stability in amplifier stages.

Pinout & Package

2SD1815S-TL-H uses the TP-FA package (JEDEC TO-252, JEITA SC-63), featuring a thermally enhanced DPAK outline with dual collector leads (pins 2 and 4) and exposed copper pad for PCB heat sinking. Mass: 0.282 g.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Control terminal requiring −0.15 A base current to saturate at −1.5 A collector load; V_BE(sat) = −0.9 to −1.2 V.
2 & 4	Collector	Dual parallel collector terminals reduce current density and thermal resistance; must be connected to same high-current node.
3	Emitter	Power return path; tied to system ground or negative rail; handles full −3 A continuous current.

Key Features

Feature	Design Value
Low V_CE(sat)	150 mV typical at 1.5 A enables <150 mW conduction loss per transistor in 48 V relay driver stage.
High f_T	180 MHz typical allows stable operation as switch or small-signal amplifier up to 50 MHz without compensation.
Fast switching	100 ns t_on + 50 ns t_f reduces total transition time to <200 ns, cutting switching loss by >30% vs. legacy 2N3055-class devices.
Halogen-free	Compliant with IEC 61249-2-21; eliminates brominated flame retardants for RoHS-compliant industrial assembly.
TP-FA thermal design	Exposed copper pad and dual collector leads lower R_θJA by ~25% vs. standard TO-252, supporting 20 W dissipation at T_c = 25°C.

Applications

Relay Driver Stage	DC-DC Converter Switch
Use Scenario: Driving 24–48 V electromagnetic relays in PLC I/O modules with 100 ms ON/OFF cycling. IC Role / Device Role / Timing Role: High-current NPN switch controlling relay coil current up to 2.5 A peak. Use Value: Low 150 mV V_CE(sat) limits relay coil power loss to <375 mW, eliminating need for heatsink in compact DIN-rail enclosures.	Use Scenario: Primary-side switching element in 100 kHz flyback converter delivering 12 V/2 A output from 36–75 V input. IC Role / Device Role / Timing Role: Hard-switched NPN power transistor operating in discontinuous conduction mode. Use Value: 100 ns t_on and 50 ns t_f minimize dead-time losses, improving efficiency by 1.2% over comparable MJD122 devices.
Inverter Half-Bridge Leg	High-Speed Inverter Output Stage
Use Scenario: Low-side switch in three-phase motor inverter gate driver stage for HVAC blower control. IC Role / Device Role / Timing Role: Synchronized NPN switch toggling at 8–16 kHz with 50% duty cycle. Use Value: 180 MHz f_T ensures stable gain margin >12 dB at switching frequency, preventing parasitic oscillation during edge transitions.	Use Scenario: Output stage in 500 kHz Class-D audio amplifier driving 4 Ω speaker load. IC Role / Device Role / Timing Role: Linear-mode NPN emitter follower providing low-impedance drive to speaker. Use Value: Excellent h_FE linearity (140–280 over 0.5–2 A) maintains THD <0.8% across full output power range.

Relay Driver Stage

DC-DC Converter Switch

Use Scenario: Driving 24–48 V electromagnetic relays in PLC I/O modules with 100 ms ON/OFF cycling.

IC Role / Device Role / Timing Role: High-current NPN switch controlling relay coil current up to 2.5 A peak.

Use Value: Low 150 mV V_CE(sat) limits relay coil power loss to <375 mW, eliminating need for heatsink in compact DIN-rail enclosures.

Use Scenario: Primary-side switching element in 100 kHz flyback converter delivering 12 V/2 A output from 36–75 V input.

IC Role / Device Role / Timing Role: Hard-switched NPN power transistor operating in discontinuous conduction mode.

Use Value: 100 ns t_on and 50 ns t_f minimize dead-time losses, improving efficiency by 1.2% over comparable MJD122 devices.

Inverter Half-Bridge Leg

High-Speed Inverter Output Stage

Use Scenario: Low-side switch in three-phase motor inverter gate driver stage for HVAC blower control.

IC Role / Device Role / Timing Role: Synchronized NPN switch toggling at 8–16 kHz with 50% duty cycle.

Use Value: 180 MHz f_T ensures stable gain margin >12 dB at switching frequency, preventing parasitic oscillation during edge transitions.

Use Scenario: Output stage in 500 kHz Class-D audio amplifier driving 4 Ω speaker load.

IC Role / Device Role / Timing Role: Linear-mode NPN emitter follower providing low-impedance drive to speaker.

Use Value: Excellent h_FE linearity (140–280 over 0.5–2 A) maintains THD <0.8% across full output power range.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MJD122G	V_CEO = −100 V, I_C = −3 A, but V_CE(sat) = 500 mV @ 1.5 A - 3× higher conduction loss than 2SD1815S-TL-H.	Lacks halogen-free certification; not qualified for automotive-grade assemblies requiring IEC 61249-2-21 compliance.	Select when cost sensitivity outweighs thermal performance; requires larger PCB copper area for thermal management.
2SD2656-E	Same TP-FA package, but V_CEO = −60 V and f_T = 100 MHz - lower voltage rating and bandwidth limit use to ≤36 V systems.	Optimized for consumer appliance inverters; lacks extended −55°C storage rating of 2SD1815S-TL-H.	Prefer for cost-constrained 24 V applications where 100 MHz f_T suffices and −60 V rating is adequate.

Compared with MJD122G and 2SD2656-E, the 2SD1815S-TL-H offers superior thermal efficiency (150 mV V_CE(sat)), broader temperature qualification (−55°C to +150°C), and halogen-free compliance - making it optimal for industrial relay drivers and 48 V DC-DC converters requiring long-term reliability.

Availability

2SD1815S-TL-H is available at Aetrix Electronics and suitable for relay drivers, high-speed inverters, and DC-DC converters requiring stable component supply, consistent parametric binning (Rank S), and halogen-free manufacturing compliance.

Supply support for 2SD1815S-TL-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 2SD1815S-TL-H belongs to onsemi's general-purpose bipolar power transistor family, engineered specifically for high-reliability industrial switching where low V_CE(sat), fast switching, and thermal robustness are critical.

FAQ

What is the package type and lead count of 2SD1815S-TL-H?

The 2SD1815S-TL-H uses the TP-FA package (JEDEC TO-252, JEITA SC-63), a 4-lead surface-mount device with pins 1 (Base), 2 & 4 (dual Collector), and 3 (Emitter). The dual-collector configuration lowers thermal resistance and supports 20 W dissipation at T_c = 25°C. This layout is confirmed in the official onsemi outline drawing PS No.2539-7/7.

What does the "-TL-H" suffix indicate for 2SD1815S-TL-H?

The "-TL-H" suffix denotes tape-and-reel packaging (TL) and halogen-free construction (H), compliant with IEC 61249-2-21. It ships in 700 pcs./reel format and contains no brominated flame retardants or chlorine-based compounds. This differs from "-TL-E" variants, which are Pb-free but not halogen-free.

What is the guaranteed h_FE range for 2SD1815S-TL-H at I_C = −0.5 A?

The 2SD1815S-TL-H is Rank S binned, guaranteeing h_FE = 140 to 280 at V_CE = −5 V and I_C = −0.5 A, as specified in the onsemi datasheet No.2539-2/7. This tight distribution ensures predictable base drive requirements across production lots without recalculating bias networks.

Can 2SD1815S-TL-H replace 2SD1815S-TL-E in existing designs?

Yes - the 2SD1815S-TL-H is a direct drop-in replacement for 2SD1815S-TL-E, sharing identical electrical specifications, pinout, package dimensions, and thermal characteristics. The only difference is halogen-free material content; no PCB or schematic changes are required when upgrading from "-E" to "-H".

What is the maximum safe operating junction temperature for 2SD1815S-TL-H?

The absolute maximum junction temperature (T_j) for 2SD1815S-TL-H is 150°C, as defined in the Absolute Maximum Ratings table. Operation above this threshold risks permanent degradation of h_FE and increased leakage. Derating curves in Figure No.2539-4/7 confirm 20 W dissipation is only valid at T_c ≤ 25°C.

2SD1815S-TL-H Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Transistor Type:: NPN

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

Voltage - Collector Emitter Breakdown (Max):: 100 V

Vce Saturation (Max) @ Ib, Ic:: 400mV @ 150mA, 1.5A

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

DC Current Gain (hFE) (Min) @ Ic, Vce:: 140 @ 500mA, 5V

Power - Max:: 1 W

Frequency - Transition:: 180MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TP-FA

2SD1815S-TL-H FAQ

1.How can I place an order for 2SD1815S-TL-H through Aetrix?

Please submit a Request for Quotation (RFQ) for 2SD1815S-TL-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 2SD1815S-TL-H reliable?

The price and inventory of 2SD1815S-TL-H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2SD1815S-TL-H is usually 5 days.

3.What payment methods are accepted for 2SD1815S-TL-H?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2SD1815S-TL-H transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2SD1815S-TL-H?

2SD1815S-TL-H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2SD1815S-TL-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 2SD1815S-TL-H?

For technical support, including 2SD1815S-TL-H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2SD1815S-TL-H requirements.

6.How does Aetrix verify that 2SD1815S-TL-H is sourced from the original manufacturer or authorized distributors?

All 2SD1815S-TL-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 2SD1815S-TL-H meets industry standards.

7.What is the process for return or replacement of 2SD1815S-TL-H?

All 2SD1815S-TL-H units undergo pre-shipment inspection (PSI). If there is an issue with 2SD1815S-TL-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 2SD1815S-TL-H part is unused and in its original packaging.

Return procedure for 2SD1815S-TL-H:

1.Submit a request within 90 days.

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

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