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

onsemi 2SD1628F-TD-H

Name: 2SD1628F-TD-H
Brand: onsemi
SKU: 2SD1628F-TD-H
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2SD1628F-TD-H

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-243AA

Datasheet:: 2SD1628F-TD-H.pdf

Description:: TRANS NPN 20V 5A PCP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

2SD1628F-TD-H from onsemi is a low-saturation-voltage NPN bipolar transistor in PCP (SOT-89) package, rated for 20 V V_CEO, 5 A I_C, and 500 mW P_C (on ceramic substrate), optimized for high-current switching in lamp drivers and relay drivers.

For engineers reviewing the 2SD1628F-TD-H datasheet, pinout, applications, or equivalent options, key selection criteria include verified V_CE(sat) ≤ 500 mV at I_C = 3 A / I_B = 60 mA, h_FE range of 160–320 at I_C = 0.5 A, and halogen-free Pb-free compliance per ordering suffix -H.

Technical Context

This device operates as a single NPN switching transistor with fixed terminal assignment (Pin 1 = Base, Pin 2 = Collector, Pin 3 = Emitter) and is characterized for DC gain (h_FE1/h_FE2) across two current ranges and saturation behavior under pulsed and continuous conditions.

Its 120 MHz f_T supports medium-speed switching (t_on = 30 ns, t_stg = 300 ns, t_f = 40 ns), and its 45 pF C_ob at V_CB = 10 V enables predictable turn-off dynamics in inductive load circuits.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	20 V - Maximum safe collector-emitter voltage before breakdown in common-emitter configuration.
I_C	5 A - Continuous collector current rating defining maximum steady-state load drive capability.
V_CE(sat)	500 mV @ I_C = 3 A, I_B = 60 mA - Low saturation voltage enabling minimal conduction loss in power-switching applications.
h_FE	160–320 @ V_CE = 2 V, I_C = 0.5 A - Confirmed DC current gain range for rank F, determining required base drive for target collector current.
f_T	120 MHz - Gain-bandwidth product indicating usable frequency limit for small-signal amplification or fast switching.
C_ob	45 pF @ V_CB = 10 V, f = 1 MHz - Output capacitance affecting switching speed and EMI in high-dV/dt environments.

Pinout & Package

2SD1628F-TD-H uses the PCP package (JEITA/JEDEC: SC-62, industry-equivalent to SOT-89), with standardized 3-pin surface-mount footprint and thermal pad on underside for enhanced heat dissipation when mounted on ceramic substrate (250 mm² × 0.8 mm).

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Control input node requiring precise I_B to achieve specified I_C and V_CE(sat).
2	Collector	High-current output node connected to load (e.g., relay coil or lamp anode); electrically tied to thermal pad.
3	Emitter	Reference node for current return path; grounded in common-emitter switch configuration.

Key Features

Feature	Design Value
Low V_CE(sat)	500 mV max at 3 A ensures <1.5 W conduction loss, reducing thermal stress in compact lamp/relay driver PCBs.
High h_FE rank F	160–320 gain range allows reduced base drive current and smaller driver circuitry vs. lower-h_FE alternatives.
Small PCP footprint	SOT-89-compatible outline (4.5 × 2.5 × 1.6 mm) enables high-density hybrid IC integration without sacrificing thermal performance.
Halogen-free & Pb-free	-H suffix certifies compliance with RoHS and JEDEC J-STD-609A Class 1 halogen-free requirements for industrial safety.

Applications

Lamp Driver	Relay Driver
Use Scenario: Driving incandescent or LED arrays in automotive interior lighting or industrial status indicators. IC Role / Device Role / Timing Role: NPN power switch controlling current flow through lamp load via base-triggered saturation. Use Value: Low V_CE(sat) minimizes power loss and self-heating, extending lamp life and enabling direct microcontroller GPIO drive with minimal external components.	Use Scenario: Activating electromagnetic relays in PLC I/O modules or HVAC control panels. IC Role / Device Role / Timing Role: High-current interface between logic-level controller and relay coil (typically 12–24 V, 50–200 mA). Use Value: Verified 5 A I_C rating and robust 300 ns storage time support reliable coil de-energization without snubber complexity.
Strobe DC-DC Converter	Hammer Driver
Use Scenario: Switching element in flyback or boost converters powering camera flash circuits. IC Role / Device Role / Timing Role: Primary switching transistor handling pulsed 5 A I_CP during strobe discharge cycles. Use Value: 8 A pulse current rating and 120 MHz f_T enable efficient energy transfer at kHz-range switching frequencies with low switching loss.	Use Scenario: Driving solenoid-based impact mechanisms in dot-matrix printers or ticket dispensers. IC Role / Device Role / Timing Role: Fast-turn-on/-off switch delivering high peak current to generate mechanical impulse. Use Value: 30 ns turn-on time and 40 ns fall time ensure precise timing control of hammer actuation, minimizing mechanical jitter.

Lamp Driver

Relay Driver

Use Scenario: Driving incandescent or LED arrays in automotive interior lighting or industrial status indicators.

IC Role / Device Role / Timing Role: NPN power switch controlling current flow through lamp load via base-triggered saturation.

Use Value: Low V_CE(sat) minimizes power loss and self-heating, extending lamp life and enabling direct microcontroller GPIO drive with minimal external components.

Use Scenario: Activating electromagnetic relays in PLC I/O modules or HVAC control panels.

IC Role / Device Role / Timing Role: High-current interface between logic-level controller and relay coil (typically 12–24 V, 50–200 mA).

Use Value: Verified 5 A I_C rating and robust 300 ns storage time support reliable coil de-energization without snubber complexity.

Strobe DC-DC Converter

Hammer Driver

Use Scenario: Switching element in flyback or boost converters powering camera flash circuits.

IC Role / Device Role / Timing Role: Primary switching transistor handling pulsed 5 A I_CP during strobe discharge cycles.

Use Value: 8 A pulse current rating and 120 MHz f_T enable efficient energy transfer at kHz-range switching frequencies with low switching loss.

Use Scenario: Driving solenoid-based impact mechanisms in dot-matrix printers or ticket dispensers.

IC Role / Device Role / Timing Role: Fast-turn-on/-off switch delivering high peak current to generate mechanical impulse.

Use Value: 30 ns turn-on time and 40 ns fall time ensure precise timing control of hammer actuation, minimizing mechanical jitter.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
2SD1628G-TD-H	Higher h_FE rank (280–560) at I_C = 0.5 A; otherwise identical ratings and package.	Enables lower base drive current in low-power control stages but may increase sensitivity to thermal drift.	Select 2SD1628G-TD-H when tighter base-current budget or higher gain stability at light loads is required.
MJD127G-TP	TO-252 (DPAK) package; V_CEO = 60 V, I_C = 2 A, V_CE(sat) = 1.2 V @ I_C = 1.5 A - lower current, higher voltage, higher saturation loss.	Better suited for higher-voltage, lower-current linear regulation or slower switching where thermal mass matters more than footprint.	Choose MJD127G-TP only if system requires >20 V blocking or TO-252 mounting compatibility; not drop-in for 2SD1628F-TD-H.

Compared with 2SD1628G-TD-H and MJD127G-TP, the 2SD1628F-TD-H offers optimal balance of moderate h_FE, low V_CE(sat), and SOT-89 density for cost-sensitive, space-constrained 20 V switching-making it preferable over G-rank when gain linearity and thermal predictability outweigh maximum gain.

Availability

2SD1628F-TD-H is available at Aetrix Electronics and suitable for lamp drivers, relay drivers, and strobe DC-DC converters requiring stable component supply, halogen-free compliance, and consistent h_FE binning.

Supply support for 2SD1628F-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 specializing in energy-efficient power, analog, sensor, and connectivity solutions for automotive, industrial, and cloud infrastructure markets.

The 2SD1628 series belongs to onsemi's general-purpose bipolar power transistor product line, designed specifically for high-reliability, high-current switching in compact surface-mount applications such as motor, lamp, and relay control.

FAQ

What is the h_FE range for 2SD1628F-TD-H?

The 2SD1628F-TD-H is binned to h_FE = 160–320 at V_CE = 2 V and I_C = 0.5 A, corresponding to "Rank F" per the official onsemi datasheet No. 1781. This range is guaranteed and tested per unit, distinguishing it from the broader 2SD1628 family's E (120–200) and G (280–560) variants. The 2SD1628F-TD-H maintains this specification across its full operating temperature range.

Is 2SD1628F-TD-H pin-compatible with other variants in the 2SD1628 series?

Yes, all 2SD1628 variants-including 2SD1628F-TD-H, 2SD1628G-TD-H, 2SD1628F-TD-E, and 2SD1628G-TD-E-share identical PCP (SOT-89) package dimensions, pinout (Pin 1 = Base, Pin 2 = Collector, Pin 3 = Emitter), and land pattern. The 2SD1628F-TD-H can be substituted on the same PCB footprint without layout changes, provided h_FE and halogen-free requirements align with system design.

What does the "-TD-H" suffix mean in 2SD1628F-TD-H?

The "-TD" denotes tape-and-reel packaging (1,000 pcs./reel), while "-H" certifies halogen-free and Pb-free construction per JEDEC J-STD-609A Class 1 and RoHS Directive 2011/65/EU. This distinguishes 2SD1628F-TD-H from "-TD-E" versions, which are Pb-free but not halogen-free. The 2SD1628F-TD-H meets strict environmental compliance for industrial and automotive end equipment.

Can 2SD1628F-TD-H replace a TO-92 transistor like BC337 in relay driver circuits?

No-2SD1628F-TD-H is not a direct replacement for BC337 due to fundamental differences: BC337 is a TO-92 packaged, 45 V, 0.8 A device with ~100–630 h_FE, whereas 2SD1628F-TD-H is SOT-89 packaged, 20 V, 5 A, with h_FE = 160–320. Substituting 2SD1628F-TD-H would require PCB redesign, revised base drive, and thermal validation. The 2SD1628F-TD-H serves higher-current applications where BC337 would saturate or overheat.

What thermal performance can be expected from 2SD1628F-TD-H on standard FR-4?

onsemi specifies 500 mW P_C only when mounted on a 250 mm² × 0.8 mm ceramic substrate. On standard FR-4 PCBs without copper pour or heatsinking, derating is essential: typical P_C drops to ~300–350 mW. For sustained 5 A operation, the 2SD1628F-TD-H requires either ceramic mounting or active cooling. Thermal resistance data for FR-4 is not published; users must validate junction temperature using measured case-to-ambient ΔT and the 2SD1628F-TD-H's 150 °C T_j limit.

2SD1628F-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):: 5 A

Voltage - Collector Emitter Breakdown (Max):: 20 V

Vce Saturation (Max) @ Ib, Ic:: 500mV @ 60mA, 3A

Current - Collector Cutoff (Max):: 100nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 120 @ 500mA, 2V

Power - Max:: 500 mW

Frequency - Transition:: 120MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PCP

2SD1628F-TD-H FAQ

1.How can I place an order for 2SD1628F-TD-H through Aetrix?

Please submit a Request for Quotation (RFQ) for 2SD1628F-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 2SD1628F-TD-H reliable?

The price and inventory of 2SD1628F-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 2SD1628F-TD-H is usually 5 days.

3.What payment methods are accepted for 2SD1628F-TD-H?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2SD1628F-TD-H transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2SD1628F-TD-H?

2SD1628F-TD-H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2SD1628F-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 2SD1628F-TD-H?

For technical support, including 2SD1628F-TD-H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2SD1628F-TD-H requirements.

6.How does Aetrix verify that 2SD1628F-TD-H is sourced from the original manufacturer or authorized distributors?

All 2SD1628F-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 2SD1628F-TD-H meets industry standards.

7.What is the process for return or replacement of 2SD1628F-TD-H?

All 2SD1628F-TD-H units undergo pre-shipment inspection (PSI). If there is an issue with 2SD1628F-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 2SD1628F-TD-H part is unused and in its original packaging.

Return procedure for 2SD1628F-TD-H:

1.Submit a request within 90 days.

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

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