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

Diodes Incorporated ZTX653

Name: ZTX653
Brand: Diodes Incorporated
SKU: ZTX653
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZTX653

Manufacturer:: Diodes Incorporated

Category:: Single Bipolar Transistors

Package:: E-Line-3

Datasheet:: ZTX653.pdf

Description:: TRANS NPN 100V 2A E-LINE

Quantity:: RFQ Add To RFQ list

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Inventory:8,426

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Product details

Overview

ZTX653 from Diodes Incorporated is an NPN silicon planar medium-power transistor designed for switching and linear amplification in industrial control, power supply regulation, and relay driver circuits. It delivers 100 V V_CEO, 2 A continuous collector current, 1 W power dissipation at 25°C (derated to 5.7 mW/°C above), 0.13 V typical V_CE(sat) at I_C=1 A/I_B=100 mA, and 175 MHz transition frequency - enabling robust performance in high-voltage, moderate-current DC-DC and motor interface stages.

For engineers reviewing the ZTX653 datasheet, ZTX653 pinout, ZTX653 application, or ZTX653 equivalent, key selection considerations include its 100 V V_CEO rating, low 0.13 V saturation voltage at 1 A, TO-92-compatible 3-223 package thermal resistance (R_th(j-amb) = 116 °C/W on PCB), and documented switching times (t_on = 80 ns, t_off = 1200 ns) under pulsed 500 mA / 10 V conditions.

Technical Context

The ZTX653 operates as a general-purpose NPN bipolar junction transistor with verified breakdown ratings: 120 V V_CBO, 100 V V_CEO, and 5 V V_EBO. Its gain (h_FE) varies with collector current but sustains usable amplification up to 1 A at V_CE = 2 V, supporting both analog biasing and digital on/off control.

Thermal design is constrained by R_th(j-amb) = 116 °C/W when mounted on ≥1 in² copper PCB, limiting continuous power to ~0.86 W at 70°C ambient. Switching behavior is characterized under pulsed conditions (300 µs width, ≤2% duty cycle), with measured t_on = 80 ns and t_off = 1200 ns at I_C = 500 mA, V_CC = 10 V, and matched base drive (I_B1 = I_B2 = 50 mA).

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	100 V - supports operation in 48 V and 72 V DC bus systems with margin against transients
I_C (continuous)	2 A - drives relays, small solenoids, or logic-level MOSFET gates without external buffering
V_CE(sat) @ 1 A/100 mA	0.13 V typical - reduces conduction loss to <130 mW at 1 A, easing thermal management
f_T	175 MHz - enables stable operation up to ~10–20 MHz in RF predriver or fast-switching applications
t_off	1200 ns - defines maximum practical switching frequency of ~300 kHz in hard-switched topologies
R_th(j-amb)	116 °C/W on 1 in² PCB - requires ≤0.86 W continuous dissipation at 70°C ambient to stay below 150°C junction
C_obo	30 pF @ 10 V - contributes to Miller capacitance, influencing gate-drive requirements in hybrid configurations

Pinout & Package

Package: TO-92-compatible 3-223 molded plastic case with E-Line pin configuration (Emitter-Base-Collector, left-to-right when flat side faces viewer).

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (Left)	Emitter (E)	Reference node for bias network; connects to ground or low-side return path in common-emitter switches
Pin 2 (Center)	Base (B)	Current-controlled input; requires ~100 mA drive for full saturation at 1 A collector load
Pin 3 (Right)	Collector (C)	High-side output node; rated for 100 V blocking and 2 A continuous current with heatsinking

Key Features

Feature	Design Value
Low V_CE(sat)	0.13 V typical at I_C = 1 A - cuts conduction loss by >50% vs. legacy 2N2222A (V_CE(sat) ≈ 0.3 V)
High V_CEO	100 V - allows direct use in 48 V telecom power supplies and 24 V industrial PLC outputs without series stacking
Fast switching	t_on = 80 ns / t_off = 1200 ns - supports PWM frequencies up to 300 kHz in DC-DC feedback drivers
Thermal robustness	T_j range −55°C to +200°C - qualified for under-hood automotive auxiliary loads and high-temp industrial enclosures
TO-92 compatibility	3-223 footprint - enables drop-in replacement for ZTX652 and backward compatibility with legacy through-hole layouts

Applications

Industrial Relay Drivers

Linear Voltage Regulators

Use Scenario: Driving 24 V/1 A electromagnetic relays in programmable logic controller (PLC) output modules.

IC Role / Device Role / Timing Role: NPN switch sinking relay coil current; configured in common-emitter with base resistor network.

Use Value: 0.13 V V_CE(sat) limits relay-coil power loss to 130 mW, reducing board heating and enabling compact layout without forced air.

Use Scenario: Pass transistor in adjustable 3–30 V, 1.5 A linear regulator using LM317 feedback loop.

IC Role / Device Role / Timing Role: Series pass element dissipating excess voltage; biased via emitter-follower configuration.

Use Value: 100 V V_CEO allows input up to 28 V with safety margin, while 2 A rating supports full-load regulation without derating.

DC-DC Converter Feedback

Motor Interface Stages

Use Scenario: Optocoupler-driven error amplifier output stage in isolated flyback converters (e.g., 12 V/2 A telecom adapter).

IC Role / Device Role / Timing Role: Current-source driver for optocoupler LED; operates in active region with fixed I_C ≈ 5–10 mA.

Use Value: Stable h_FE and low leakage (I_CBO ≤ 0.1 µA at 80 V) ensure precise feedback current over temperature and lifetime.

Use Scenario: Direction-control switch in H-bridge half-leg for 12 V brushed DC motors (e.g., HVAC damper actuators).

IC Role / Device Role / Timing Role: Low-side NPN switch turning motor winding on/off; driven by microcontroller GPIO.

Use Value: 1200 ns t_off enables clean commutation at 300 Hz PWM, minimizing shoot-through risk during dead-time transitions.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN medium-power switching applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ZTX652	Lower 80 V V_CEO, identical pinout and gain profile, but obsolete per manufacturer notice	Not suitable for >80 V rail designs; lacks margin for transient suppression in industrial environments	Select only for legacy repair; ZTX653 provides 25% higher blocking voltage with no layout change
MJD127G	TO-220 package, 100 V V_CEO, 2 A I_C, but higher V_CE(sat) (0.5 V typ. @ 1 A) and slower t_off (2 µs)	Requires heatsink for >0.5 A continuous; unsuitable for space-constrained PCBs needing TO-92 fit	Choose when higher power dissipation (>1.5 W) is required and board area permits TO-220 mounting

Compared with ZTX652, ZTX653 offers higher voltage capability without footprint change; versus MJD127G, it trades thermal headroom for compactness and lower saturation loss - making it optimal for cost-sensitive, space-limited 1–2 A switching nodes.

Availability

ZTX653 is available at Aetrix Electronics and suitable for industrial relay drivers, linear regulator pass elements, DC-DC feedback stages, and motor interface circuits requiring stable component supply across extended production lifecycles.

Supply support for ZTX653 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

Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal devices for power management, signal integrity, and connectivity applications.

ZTX653 belongs to Diodes' ZTX series of high-voltage, medium-power bipolar transistors engineered for reliability-critical industrial control, power conversion, and automation equipment where long-term parametric stability and thermal resilience are essential.

FAQ

Is ZTX653 RoHS compliant and halogen-free?

Yes, ZTX653 meets RoHS Directive 2011/65/EU and is certified halogen-free per IEC 61249-2-21. The device carries Diodes Incorporated's standard green marking (no lead, no brominated flame retardants), and compliance documentation is available upon request for qualifying orders.

What is the maximum safe operating area (SOA) limit at 100°C case temperature?

At T_C = 100°C, the SOA curve restricts continuous operation to ≤0.5 A at 50 V V_CE or ≤1.0 A at 25 V V_CE, based on the published single-pulse SOA graph and R_th(j-case) = 70 °C/W. Derating must follow the 5.7 mW/°C slope above 25°C ambient.

Can ZTX653 be used in avalanche mode?

No - ZTX653 is not rated or characterized for repetitive avalanche operation. Its absolute maximum V_CEO = 100 V is a DC blocking rating; exceeding this voltage risks irreversible junction failure. External clamping (e.g., TVS diode) is required for inductive load switching.

Does ZTX653 require a base resistor in switching applications?

Yes - a series base resistor is mandatory to limit I_B and ensure saturation. For 1 A I_C, a 100 Ω resistor (with 5 V drive) delivers ~45 mA I_B, achieving h_FE-based saturation. Omitting it risks thermal runaway due to uncontrolled base current and secondary breakdown.

ZTX653 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: E-Line-3

Packaging:: Bulk

Product Status:: Active

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 2 A

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

Vce Saturation (Max) @ Ib, Ic:: 500mV @ 200mA, 2A

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

DC Current Gain (hFE) (Min) @ Ic, Vce:: -

Power - Max:: 1 W

Frequency - Transition:: 175MHz

Operating Temperature:: -55°C ~ 200°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: E-Line (TO-92 compatible)

ZTX653 FAQ

1.How can I place an order for ZTX653 through Aetrix?

Please submit a Request for Quotation (RFQ) for ZTX653 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 ZTX653 reliable?

The price and inventory of ZTX653 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZTX653 is usually 5 days.

3.What payment methods are accepted for ZTX653?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZTX653 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZTX653?

ZTX653 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZTX653 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 ZTX653?

For technical support, including ZTX653 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZTX653 requirements.

6.How does Aetrix verify that ZTX653 is sourced from the original manufacturer or authorized distributors?

All ZTX653 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 ZTX653 meets industry standards.

7.What is the process for return or replacement of ZTX653?

All ZTX653 units undergo pre-shipment inspection (PSI). If there is an issue with ZTX653, 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 ZTX653 part is unused and in its original packaging.

Return procedure for ZTX653:

1.Submit a request within 90 days.

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

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