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Diodes Incorporated ZTX653STOB
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- Part No.:
- ZTX653STOB
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- E-Line-3, Formed Leads
- Datasheet:
-
ZTX653STOB.pdf
- Description:
- TRANS NPN 100V 2A E-LINE
- Quantity:
- Payment:
- Shipping:
Inventory:8,824
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Product details
Overview
ZTX653STOB 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 VCEO, 2 A continuous collector current, 0.13 V typical VCE(sat) at IC=1 A/IB=100 mA, 175 MHz fT, and operates across –55°C to +200°C junction temperature.
For engineers reviewing the ZTX653STOB datasheet, ZTX653STOB pinout, ZTX653STOB application, or ZTX653STOB equivalent, key selection criteria include verified VCEO=100 V, Ptot=1 W (derated above 25°C), TO-92 compatible 3-lead package, low saturation voltage for efficient switching, and thermal resistance Rth(j-amb)=175°C/W on standard PCB.
Technical Context
This discrete NPN bipolar junction transistor features a planar epitaxial structure optimized for medium-power switching with fast turn-on/turn-off times (ton=80 ns, toff=1200 ns) and stable gain (hFE specified across IC range). Its 120 V VCBO and 5 V VEBO support robust voltage margining in inductive load interfaces.
The device is characterized at Tamb=25°C with pulsed test conditions (300 µs pulse width, ≤2% duty cycle) to ensure accurate saturation and switching parameter reporting. Thermal performance is defined for mounting on ≥1 in² copper PCB (Rth(j-amb)=116°C/W) and free-air (Rth(j-amb)=175°C/W).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 100 V - Maximum allowable collector-emitter voltage before breakdown under open-base condition; defines safe operating voltage headroom in switch-mode applications. |
| IC (continuous) | 2 A - Continuous DC collector current rating; determines maximum sustained load drive capability without thermal runaway. |
| VCE(sat) | 0.13 V (typ) at IC=1 A/IB=100 mA - Low saturation voltage minimizes conduction loss and self-heating in high-duty-cycle switching. |
| fT | 175 MHz - Transition frequency confirms usable gain-bandwidth for audio-frequency amplification and fast digital switching up to ~10–20 MHz. |
| Rth(j-amb) | 175°C/W - Junction-to-ambient thermal resistance in free air; used to calculate max ambient temperature for 1 W dissipation at Tj≤150°C. |
| toff | 1200 ns - Turn-off delay + fall time; critical for minimizing switching losses in PWM-driven inductive loads like solenoids and relays. |
Pinout & Package
Package: TO-92 compatible (3-lead plastic case, E-Line 3-223 outline), through-hole mountable, lead-form option STOB indicates straight leads, tape-and-reel packaging for automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Emitter (E) | Current sink terminal | Reference node for base drive; connected to ground or low-side return path in common-emitter configurations. |
| Base (B) | Control input | Receives forward-biased current (IB) to saturate or cut off the transistor; requires current-limiting resistor in most driver designs. |
| Collector (C) | Current source terminal | Connected to load and supply rail; carries full load current when saturated; must withstand VCEO during off-state. |
Key Features
| Feature | Design Value |
|---|---|
| Low VCE(sat) | 0.13 V typ at 1 A enables <130 mW conduction loss per transistor-critical for thermally constrained PCB layouts. |
| High VCBO | 120 V supports operation with 24–48 V bus systems plus transient margin, reducing need for external clamping in relay drivers. |
| Wide Tj range | –55°C to +200°C operation allows deployment in automotive engine compartments and industrial motor controls without derating. |
| Fast switching | 80 ns ton/1200 ns toff enables use in 10–50 kHz PWM circuits with predictable timing and minimal overlap loss. |
Applications
| Industrial Relay Driver | DC-DC Converter Switch |
|---|---|
Use Scenario: Driving 24 V/500 mA electromagnetic relays in PLC I/O modules with 3.3 V or 5 V microcontroller GPIO. IC Role / Device Role / Timing Role: Medium-power NPN switch providing current gain and voltage isolation between logic-level controller and inductive load. Use Value: 100 V VCEO absorbs relay coil flyback spikes; 0.13 V VCE(sat) limits heat rise to <130 mW at full load. | Use Scenario: Low-side switching element in non-isolated buck converter feedback loop or auxiliary bias supply. IC Role / Device Role / Timing Role: Synchronous or asynchronous power switch controlling energy transfer into output inductor/capacitor network. Use Value: 175 MHz fT ensures stable gain at 100 kHz switching; 2 A IC supports up to 1.5 A output with margin. |
| Linear Voltage Regulator Pass Element | Audio Preamp Stage |
Use Scenario: Series pass transistor in adjustable 5–15 V linear regulators powering analog sensors or precision ADCs. IC Role / Device Role / Timing Role: Current-controlled variable resistor regulating output voltage via base bias adjustment. Use Value: Low VCE(sat) reduces dropout voltage; wide Tj range maintains regulation stability across ambient extremes. | Use Scenario: First-stage small-signal amplifier in battery-powered microphone preamplifiers or sensor signal conditioning. IC Role / Device Role / Timing Role: Common-emitter voltage amplifier providing 100–200× gain with low noise and minimal distortion. Use Value: 175 MHz fT supports flat response to 20 kHz; hFE consistency across IC ensures predictable bias point stability. |
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 |
|---|---|---|---|
| BC337-40 | VCEO=45 V, IC=0.5 A, fT=100 MHz, TO-92 | Lower voltage/current rating; unsuitable for >30 V bus or >500 mA loads | Select only for low-voltage logic-level switching where 100 V margin is unnecessary. |
| MJD127 | VCEO=100 V, IC=2 A, but in TO-220 package; higher Ptot=15 W | Requires heatsink; not drop-in replaceable due to footprint and thermal interface differences | Choose when >1 W continuous dissipation is required and board space permits TO-220 mounting. |
Compared with BC337-40 and MJD127, ZTX653STOB uniquely balances 100 V/2 A capability with TO-92 form factor and 1 W dissipation-making it optimal for space-constrained, medium-voltage industrial switching where thermal mass is limited.
Availability
ZTX653STOB is available at Aetrix Electronics and suitable for industrial relay drivers, DC-DC converter switches, linear regulator pass elements, and audio preamp stages requiring stable component supply and long-term manufacturability.
Supply support for ZTX653STOB 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 industrial, computing, consumer, and communications markets.
ZTX653STOB belongs to the ZTX series of medium-power bipolar transistors engineered for reliable switching and amplification in harsh-environment applications demanding extended temperature range and proven ruggedness.
FAQ
What is the maximum safe operating temperature for ZTX653STOB?
The ZTX653STOB has a specified junction temperature range of –55°C to +200°C. For continuous operation at full 2 A current and 1 W dissipation, ambient temperature must be limited to ≤75°C when mounted on standard PCB (Rth(j-amb)=116°C/W) to maintain Tj ≤150°C per reliability guidelines.
Can ZTX653STOB replace ZTX652 in existing designs?
Yes-ZTX653STOB is the designated replacement for ZTX652, offering identical pinout and package (TO-92 3-223), plus improved VCEO (100 V vs. 80 V) and VCBO (120 V vs. 100 V). No circuit modification is needed, and it provides enhanced voltage margin for legacy designs.
Is ZTX653STOB suitable for PWM motor control?
ZTX653STOB supports PWM frequencies up to 50 kHz with verified ton/toff (80 ns/1200 ns), but its 1 W power limit restricts use to low-power brushed DC motors (<5 W mechanical output). For higher loads, parallel devices or MOSFET alternatives are recommended.
What is the typical hFE at IC = 1 A and VCE = 2 V?
Per the manufacturer's typical characteristics curve, hFE for ZTX653STOB is approximately 120 at IC = 1 A and VCE = 2 V. The datasheet specifies minimum hFE = 100 under these conditions, ensuring consistent current gain across production lots.
ZTX653STOB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- E-Line-3, Formed Leads
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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)
ZTX653STOB FAQ
1.How can I place an order for ZTX653STOB through Aetrix?
Please submit a Request for Quotation (RFQ) for ZTX653STOB 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 ZTX653STOB reliable?
The price and inventory of ZTX653STOB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZTX653STOB is usually 5 days.
3.What payment methods are accepted for ZTX653STOB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZTX653STOB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZTX653STOB?
ZTX653STOB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZTX653STOB 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 ZTX653STOB?
For technical support, including ZTX653STOB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZTX653STOB requirements.
6.How does Aetrix verify that ZTX653STOB is sourced from the original manufacturer or authorized distributors?
All ZTX653STOB 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 ZTX653STOB meets industry standards.
7.What is the process for return or replacement of ZTX653STOB?
All ZTX653STOB units undergo pre-shipment inspection (PSI). If there is an issue with ZTX653STOB, 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 ZTX653STOB part is unused and in its original packaging.
Return procedure for ZTX653STOB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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