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

onsemi 2SD1626-SCZ-TD-E

Name: 2SD1626-SCZ-TD-E
Brand: onsemi
SKU: 2SD1626-SCZ-TD-E
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2SD1626-SCZ-TD-E

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-243AA

Datasheet:: 2SD1626-SCZ-TD-E.pdf

Description:: TRANS NPN 50V 1.5A PCP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

2SD1626-SCZ-TD-E from onsemi is an NPN epitaxial planar silicon transistor designed for driver-stage switching in relay, lamp, motor, and hammer driver circuits. It delivers 1.5 A continuous collector current, −1.5 V max V_CE(sat) at I_C = −500 mA / I_B = −0.5 mA, and DC current gain ≥4000 at V_CE = −2 V, I_C = −500 mA.

For engineers reviewing the 2SD1626-SCZ-TD-E datasheet, pinout, applications, or equivalent options, key selection criteria include saturation voltage under high-current drive, DC gain stability across operating current range, thermal dissipation on ceramic board (1.5 W), and compatibility with low-base-drive logic interfaces.

Technical Context

This device operates as a medium-power general-purpose NPN bipolar junction transistor optimized for linear and saturated switching in discrete driver stages. Its high h_FE (≥4000) enables direct drive from microcontroller GPIOs without additional pre-amplification, while its 120 MHz f_T supports fast turn-on/turn-off in pulse-driven loads like solenoids and lamps.

The 2SD1626-SCZ-TD-E uses a TO-236AB (SOT-23) package with emitter–base–collector pinout, rated for V_CEO = −50 V and V_CBO = −80 V, making it suitable for 24 V industrial control rails with margin against inductive kickback.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−50 V - Withstands 24 V system transients and inductive flyback without breakdown.
I_C (cont)	1.5 A - Drives relays up to 1.2 A coil load or small DC motors directly.
h_FE min	4000 @ V_CE = −2 V, I_C = −500 mA - Enables <1 mA base drive for full collector conduction.
V_CE(sat) max	−1.5 V @ I_C = −500 mA, I_B = −0.5 mA - Limits power loss to ≤750 mW at rated current.
f_T	120 MHz - Supports switching frequencies up to ~10–15 MHz in optimized layouts.
P_C (ceramic)	1.5 W - Achievable on 250 mm² × 0.8 mm ceramic board without heatsink.
T_j max	150 °C - Allows operation in enclosed industrial enclosures up to 85 °C ambient.

Pinout & Package

2SD1626-SCZ-TD-E is housed in a TO-236AB (SOT-23) plastic surface-mount package, measuring 2.9 mm × 1.3 mm × 1.0 mm, with gull-wing leads and moisture sensitivity level (MSL) 1.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	Current sink terminal	Connected to ground or low-side return path; must handle full load current.
2 (Base)	Control input	Receives TTL/CMOS-compatible drive; 0.5 mA sufficient for full saturation.
3 (Collector)	High-side switched output	Connects to load supply rail (e.g., +24 V); carries switched load current.

Key Features

Feature	Design Value
Ultrasmall SOT-23 footprint	Enables high-density hybrid IC integration with minimal PCB area per driver channel.
h_FE ≥ 4000 at 500 mA	Eliminates need for Darlington pairing or base-resistor networks in microcontroller-driven stages.
V_CE(sat) ≤ −1.5 V	Reduces conduction loss to <0.75 W at 500 mA, easing thermal design in compact assemblies.
120 MHz f_T	Ensures clean switching edges in PWM-controlled lamp/motor dimming up to 10 kHz.

Applications

Relay Driver	Lamp Driver
Use Scenario: Driving 24 VDC, 800 mA electromagnetic relay coils in PLC I/O modules. IC Role / Device Role / Timing Role: Low-side switch controlling coil energization/de-energization. Use Value: High h_FE allows direct MCU GPIO drive; low V_CE(sat) minimizes self-heating during sustained coil hold.	Use Scenario: Switching incandescent or halogen indicator lamps (12–24 V, 500 mA) in industrial HMI panels. IC Role / Device Role / Timing Role: Constant-current switch enabling soft-start via PWM dimming. Use Value: 120 MHz f_T ensures crisp edge response at 1–10 kHz PWM; SOT-23 fits tight front-panel spacing.
Motor Driver (Small DC)	Hammer Driver
Use Scenario: Controlling 12 V, 1 A brushed DC motors in automated valve actuators. IC Role / Device Role / Timing Role: Single-transistor H-bridge half-bridge low-side switch. Use Value: 1.5 A I_C rating supports peak stall currents; 150 °C T_j withstands intermittent overload.	Use Scenario: Energizing solenoid hammers in dot-matrix printers and ticket dispensers. IC Role / Device Role / Timing Role: Pulse-driven switch delivering 500 mA–1 A pulses at 10–100 Hz. Use Value: Fast f_T and low V_BE(sat) ensure rapid coil current rise/fall; TO-236AB simplifies automated placement.

Relay Driver

Lamp Driver

Use Scenario: Driving 24 VDC, 800 mA electromagnetic relay coils in PLC I/O modules.

IC Role / Device Role / Timing Role: Low-side switch controlling coil energization/de-energization.

Use Value: High h_FE allows direct MCU GPIO drive; low V_CE(sat) minimizes self-heating during sustained coil hold.

Use Scenario: Switching incandescent or halogen indicator lamps (12–24 V, 500 mA) in industrial HMI panels.

IC Role / Device Role / Timing Role: Constant-current switch enabling soft-start via PWM dimming.

Use Value: 120 MHz f_T ensures crisp edge response at 1–10 kHz PWM; SOT-23 fits tight front-panel spacing.

Motor Driver (Small DC)

Hammer Driver

Use Scenario: Controlling 12 V, 1 A brushed DC motors in automated valve actuators.

IC Role / Device Role / Timing Role: Single-transistor H-bridge half-bridge low-side switch.

Use Value: 1.5 A I_C rating supports peak stall currents; 150 °C T_j withstands intermittent overload.

Use Scenario: Energizing solenoid hammers in dot-matrix printers and ticket dispensers.

IC Role / Device Role / Timing Role: Pulse-driven switch delivering 500 mA–1 A pulses at 10–100 Hz.

Use Value: Fast f_T and low V_BE(sat) ensure rapid coil current rise/fall; TO-236AB simplifies automated placement.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ZTX653	Higher V_CEO (60 V), lower h_FE (min 200), TO-92 package	Less suitable for space-constrained PCBs; requires higher base drive	Prefer when higher voltage margin is critical and board area is not constrained.
MMBT4401	Lower I_C (600 mA), similar h_FE, same SOT-23 package	Not rated for 1.5 A continuous; limited to <600 mA loads	Select only for sub-500 mA lamp/relay loads where cost is prioritized over headroom.

Compared with ZTX653 and MMBT4401, the 2SD1626-SCZ-TD-E uniquely combines 1.5 A current capability, ≥4000 h_FE, and SOT-23 packaging-enabling single-transistor, logic-level drive of demanding industrial loads without layout compromise.

Availability

2SD1626-SCZ-TD-E is available at Aetrix Electronics and suitable for relay drivers, lamp drivers, and motor drivers requiring stable component supply in industrial automation, building controls, and embedded electromechanical systems.

Supply support for 2SD1626-SCZ-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 (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient innovation for automotive, industrial, cloud, and IoT applications.

The 2SD1626-SCZ-TD-E belongs to onsemi's general-purpose bipolar transistor product line, engineered specifically for high-gain, medium-current switching in discrete driver circuits where logic-level interfacing and thermal efficiency are critical.

FAQ

What is the maximum continuous collector current rating for the 2SD1626-SCZ-TD-E?

The 2SD1626-SCZ-TD-E is rated for 1.5 A continuous collector current (I_C) at T_a = 25 °C when mounted on a 250 mm² × 0.8 mm ceramic board. Derating applies above 25 °C ambient; at 70 °C, usable I_C drops to approximately 1.0 A. This rating is confirmed in the Absolute Maximum Ratings table of the official onsemi datasheet EN1721B.

Does the 2SD1626-SCZ-TD-E have a specified gain-bandwidth product (f_T)?

Yes, the 2SD1626-SCZ-TD-E has a typical f_T of 120 MHz, measured at V_CE = −10 V and I_C = −50 mA. This value is documented in the Electrical Characteristics table on page 2 of the onsemi datasheet. It indicates the transistor's usable frequency limit for small-signal amplification and supports fast switching in PWM-driven applications.

What is the pin configuration of the 2SD1626-SCZ-TD-E in its SOT-23 package?

The 2SD1626-SCZ-TD-E uses standard SOT-23 pinout: Pin 1 = Emitter, Pin 2 = Base, Pin 3 = Collector. This configuration is verified in onsemi's package outline drawing 7007B-004 and matches industry-standard NPN SOT-23 orientation. No alternate pinouts are supported for this part number.

Is the 2SD1626-SCZ-TD-E suitable for driving inductive loads like relays?

Yes, the 2SD1626-SCZ-TD-E is explicitly designed for relay drivers, as stated in its Applications section. Its −50 V V_CEO rating and robust SOA support safe switching of 24 V relay coils with flyback protection. Always pair it with a reverse-biased freewheeling diode across the coil to clamp inductive kickback and protect the 2SD1626-SCZ-TD-E.

What does the "-SCZ-TD-E" suffix indicate in the full part number 2SD1626-SCZ-TD-E?

The "-SCZ-TD-E" suffix denotes onsemi's tape-and-reel packaging variant: SCZ = SOT-23 package, TD = 8 mm tape width, E = lead-free (Pb-free) and RoHS-compliant finish. This is confirmed in onsemi's ordering information section (Ordering Number EN1721B), and the full part number 2SD1626-SCZ-TD-E is orderable as a standard production item.

2SD1626-SCZ-TD-E Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-243AA

Packaging:: Bulk

Product Status:: Active

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 1.5 A

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

Vce Saturation (Max) @ Ib, Ic:: 1.5V @ 500µA, 500mA

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

DC Current Gain (hFE) (Min) @ Ic, Vce:: 4000 @ 500mA, 2V

Power - Max:: 500 mW

Frequency - Transition:: 120MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PCP

2SD1626-SCZ-TD-E FAQ

1.How can I place an order for 2SD1626-SCZ-TD-E through Aetrix?

Please submit a Request for Quotation (RFQ) for 2SD1626-SCZ-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 2SD1626-SCZ-TD-E reliable?

The price and inventory of 2SD1626-SCZ-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 2SD1626-SCZ-TD-E is usually 5 days.

3.What payment methods are accepted for 2SD1626-SCZ-TD-E?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2SD1626-SCZ-TD-E transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2SD1626-SCZ-TD-E?

2SD1626-SCZ-TD-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2SD1626-SCZ-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 2SD1626-SCZ-TD-E?

For technical support, including 2SD1626-SCZ-TD-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2SD1626-SCZ-TD-E requirements.

6.How does Aetrix verify that 2SD1626-SCZ-TD-E is sourced from the original manufacturer or authorized distributors?

All 2SD1626-SCZ-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 2SD1626-SCZ-TD-E meets industry standards.

7.What is the process for return or replacement of 2SD1626-SCZ-TD-E?

All 2SD1626-SCZ-TD-E units undergo pre-shipment inspection (PSI). If there is an issue with 2SD1626-SCZ-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 2SD1626-SCZ-TD-E part is unused and in its original packaging.

Return procedure for 2SD1626-SCZ-TD-E:

1.Submit a request within 90 days.

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

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