Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

onsemi KSD1616AGBU

Name: KSD1616AGBU
Brand: onsemi
SKU: KSD1616AGBU
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: KSD1616AGBU

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-226-3, TO-92-3 (TO-226AA)

Datasheet:: KSD1616AGBU.pdf

Description:: TRANS NPN 60V 1A TO-92-3

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:27,595

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

KSD1616AGBU from onsemi is an NPN epitaxial silicon transistor designed for audio frequency power amplification and medium-speed switching applications, with 60 V V_CEO, 1 A continuous collector current, 0.75 W power dissipation, and 100–160 MHz f_T; it is commonly used in low-power audio output stages and relay drivers.

For engineers reviewing the KSD1616AGBU datasheet, pinout, applications, or equivalent options, key selection criteria include DC current gain classification (G = 200–400 at I_C = 100 mA), V_CE(sat) ≤ 0.30 V at 1 A/50 mA drive, TO-92-3 package thermal resistance (160 °C/W), and Pb-free compliance per J-STD-609.

Technical Context

The KSD1616AGBU operates as a general-purpose bipolar junction transistor with fixed-emitter configuration and base-controlled conduction. Its design supports linear amplification up to ~100 kHz and switching with t_ON ≤ 70 ns, t_STG ≤ 950 ns, and t_F ≤ 70 ns under specified pulse conditions.

It features complementary pairing with KSB1116/KSB1116A PNP transistors for push-pull configurations, and its h_FE classification G ensures minimum DC gain of 200 at 100 mA - critical for stable biasing in Class-A amplifier stages and discrete driver circuits.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	60 V - maximum safe collector-emitter voltage before breakdown; defines usable supply headroom in low-voltage amplifier or switch designs
I_C (DC)	1 A - continuous collector current rating; sets upper limit for sustained load driving capability without thermal derating
f_T	100–160 MHz - current gain bandwidth product; confirms suitability for audio-band amplification and sub-MHz switching
V_CE(sat)	≤ 0.30 V at I_C = 1 A, I_B = 50 mA - low saturation voltage minimizes power loss and heating in switching mode
R_JA	160 °C/W - junction-to-ambient thermal resistance; requires heatsinking or airflow for >300 mW operation at room temperature
h_FE (G-class)	200–400 at V_CE = 2 V, I_C = 100 mA - tight DC gain bin enables predictable bias point setting without trimming
C_ob	19 pF typical at V_CE = 10 V - output capacitance affects high-frequency response and switching speed in capacitive-load circuits

Pinout & Package

Package: TO-92-3 (Case 135AN), Pb-free, through-hole mounting with 4.83 mm × 4.76 mm footprint and standard leadform.

Pin/Terminal	Circuit Role	Design Meaning
1	Emitter	Current exit path; connects to ground or low-side return in common-emitter configurations
2	Collector	Current entry path; ties to load or positive rail; primary heat-generating terminal
3	Base	Control input; requires current-limited drive (e.g., 50 mA max for 1 A I_C) to ensure saturation

Key Features

Feature	Design Value
Audio & switching dual role	Validated by f_T ≥ 100 MHz and t_ON/t_F ≤ 70 ns - supports both linear amplification and digital-level switching
G-class h_FE binning	200–400 h_FE at 100 mA ensures consistent bias stability across production lots without manual adjustment
Pb-free construction	Complies with J-STD-609 Class 2a marking and RoHS Directive 2011/65/EU - suitable for environmentally regulated industrial assemblies
Complementary pairing	Designed as NPN match to KSB1116/KSB1116A PNP - enables balanced push-pull output stages with matched gain and timing

Applications

Low-Voltage Audio Amplifier	Relay Driver Circuit
Use Scenario: Driving 8 Ω speaker loads from 12 V supply in portable intercom or alarm sounders. IC Role / Device Role / Timing Role: NPN power output stage in Class-A or quasi-complementary topology. Use Value: V_CE(sat) ≤ 0.30 V reduces idle dissipation; h_FE ≥ 200 ensures sufficient drive margin for speaker impedance variation.	Use Scenario: Controlling 12 V/500 mA electromagnetic relays in PLC I/O modules. IC Role / Device Role / Timing Role: Medium-speed saturated switch interfacing microcontroller GPIO to relay coil. Use Value: t_ON/t_F ≤ 70 ns prevents contact chatter; 1 A I_C rating accommodates relay inrush current.
DC Motor Speed Control	LED Current Regulator
Use Scenario: PWM-driven 24 V, 800 mA brushed DC motor in HVAC damper actuators. IC Role / Device Role / Timing Role: Low-side switching element in open-loop speed control circuit. Use Value: R_JA = 160 °C/W allows 500 mW operation with minimal heatsink; f_T > 100 MHz supports 20 kHz PWM without phase lag.	Use Scenario: Constant-current source for high-brightness indicator LEDs in industrial HMI panels. IC Role / Device Role / Timing Role: Linear current regulator using emitter-degeneration resistor feedback. Use Value: Tight h_FE bin (200–400) ensures ±5% LED current accuracy across temperature and unit variance.

Low-Voltage Audio Amplifier

Relay Driver Circuit

Use Scenario: Driving 8 Ω speaker loads from 12 V supply in portable intercom or alarm sounders.

IC Role / Device Role / Timing Role: NPN power output stage in Class-A or quasi-complementary topology.

Use Value: V_CE(sat) ≤ 0.30 V reduces idle dissipation; h_FE ≥ 200 ensures sufficient drive margin for speaker impedance variation.

Use Scenario: Controlling 12 V/500 mA electromagnetic relays in PLC I/O modules.

IC Role / Device Role / Timing Role: Medium-speed saturated switch interfacing microcontroller GPIO to relay coil.

Use Value: t_ON/t_F ≤ 70 ns prevents contact chatter; 1 A I_C rating accommodates relay inrush current.

DC Motor Speed Control

LED Current Regulator

Use Scenario: PWM-driven 24 V, 800 mA brushed DC motor in HVAC damper actuators.

IC Role / Device Role / Timing Role: Low-side switching element in open-loop speed control circuit.

Use Value: R_JA = 160 °C/W allows 500 mW operation with minimal heatsink; f_T > 100 MHz supports 20 kHz PWM without phase lag.

Use Scenario: Constant-current source for high-brightness indicator LEDs in industrial HMI panels.

IC Role / Device Role / Timing Role: Linear current regulator using emitter-degeneration resistor feedback.

Use Value: Tight h_FE bin (200–400) ensures ±5% LED current accuracy across temperature and unit variance.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MJD1616G	TO-252 (DPAK) package; higher P_D = 1.5 W; same V_CEO/I_C/h_FE specs	Suitable for surface-mount PCBs requiring higher thermal performance and automated assembly	Select when board space permits SMT layout and thermal management exceeds TO-92 limits
KSC1845FTA	TO-92-3 package; lower V_CEO = 50 V; h_FE = 120–240 at 100 mA; f_T = 80 MHz	Acceptable where supply voltage ≤ 40 V and moderate gain/stability suffices	Choose only if system voltage stays below 40 V and switching speed < 100 kHz is acceptable

Compared with KSD1616AGBU, MJD1616G offers superior thermal handling in SMT form but requires PCB redesign, while KSC1845FTA trades voltage margin and bandwidth for cost reduction in less demanding linear or low-speed roles.

Availability

KSD1616AGBU is available at Aetrix Electronics and suitable for low-power audio amplifiers, relay drivers, DC motor controls, and LED current regulators requiring stable component supply and long-term industrial availability.

Supply support for KSD1616AGBU 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 electronics, serving automotive, industrial, cloud, and IoT markets with discrete, analog, and logic solutions.

The KSD1616AGBU belongs to onsemi's general-purpose bipolar transistor family, engineered for reliability in cost-sensitive, medium-power linear and switching applications where Pb-free compliance and consistent gain binning are essential.

FAQ

What is the maximum continuous collector current rating for KSD1616AGBU?

The KSD1616AGBU has a maximum continuous collector current (I_C) rating of 1 A at T_A = 25 °C. This rating assumes proper PCB thermal management; derating applies above 25 °C at 6 mW/°C. Exceeding this current without adequate heatsinking risks junction overheating beyond the 150 °C maximum TJ, potentially causing permanent degradation of the KSD1616AGBU device.

Is KSD1616AGBU pin-compatible with KSD1616AYTA?

Yes, KSD1616AGBU and KSD1616AYTA share identical TO-92-3 package pinout (Emitter-Collector-Base), same electrical specifications, and same Pb-free construction. However, KSD1616AYTA is marked as discontinued per onsemi's February 2026 revision notice, making KSD1616AGBU the active, recommended version for new designs and ongoing production of the KSD1616AGBU.

What does the 'G' suffix in KSD1616AGBU indicate?

The 'G' in KSD1616AGBU denotes the h_FE gain classification bin: minimum DC current gain of 200 and maximum of 400 at V_CE = 2 V and I_C = 100 mA. This tighter bin improves predictability in bias-critical applications like Class-A amplifiers and ensures consistent performance across units without manual gain matching - a key differentiator of the KSD1616AGBU over generic variants.

Can KSD1616AGBU be used in switching power supplies?

The KSD1616AGBU is not recommended for switching power supply applications due to its 0.75 W power dissipation limit, 160 °C/W thermal resistance, and lack of optimized SOA curves for repetitive high-voltage/high-current switching. While it achieves t_ON/t_F ≤ 70 ns, its Safe Operating Area restricts use to low-duty-cycle, low-power switching - best suited for KSD1616AGBU roles in signal-level or auxiliary control circuits, not main power conversion stages.

Does KSD1616AGBU require a heatsink in typical operation?

A heatsink is not required for KSD1616AGBU at power levels ≤ 300 mW with standard FR-4 PCB land patterns (76 mm × 114 mm). At full 0.75 W dissipation, junction temperature rises ~120 °C above ambient - exceeding the 150 °C limit. Therefore, for sustained operation above 300 mW, thermal relief via copper pour, forced air, or external heatsink is necessary to maintain safe KSD1616AGBU operation and long-term reliability.

KSD1616AGBU Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-226-3, TO-92-3 (TO-226AA)

Packaging:: Bulk

Product Status:: Active

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 1 A

Voltage - Collector Emitter Breakdown (Max):: 60 V

Vce Saturation (Max) @ Ib, Ic:: 300mV @ 50mA, 1A

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

DC Current Gain (hFE) (Min) @ Ic, Vce:: 200 @ 100mA, 2V

Power - Max:: 750 mW

Frequency - Transition:: 160MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-92-3

KSD1616AGBU FAQ

1.How can I place an order for KSD1616AGBU through Aetrix?

Please submit a Request for Quotation (RFQ) for KSD1616AGBU 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 KSD1616AGBU reliable?

The price and inventory of KSD1616AGBU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KSD1616AGBU is usually 5 days.

3.What payment methods are accepted for KSD1616AGBU?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KSD1616AGBU transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for KSD1616AGBU?

KSD1616AGBU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your KSD1616AGBU 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 KSD1616AGBU?

For technical support, including KSD1616AGBU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KSD1616AGBU requirements.

6.How does Aetrix verify that KSD1616AGBU is sourced from the original manufacturer or authorized distributors?

All KSD1616AGBU 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 KSD1616AGBU meets industry standards.

7.What is the process for return or replacement of KSD1616AGBU?

All KSD1616AGBU units undergo pre-shipment inspection (PSI). If there is an issue with KSD1616AGBU, 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 KSD1616AGBU part is unused and in its original packaging.

Return procedure for KSD1616AGBU:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…