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Diodes Incorporated ZTX696BSTOB
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- Part No.:
- ZTX696BSTOB
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- E-Line-3, Formed Leads
- Datasheet:
-
ZTX696BSTOB.pdf
- Description:
- TRANS NPN 180V 0.5A E-LINE
- Quantity:
- Payment:
- Shipping:
Inventory:3,456
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Product details
Overview
ZTX696BSTOB from Diodes Incorporated is an NPN silicon planar medium-power high-gain transistor in TO-92 package, rated for 180 V VCEO, 500 hFE at IC = 100 mA, and 1.5 W Ptot on PCB (1 in² copper), used in relay/solenoid drivers and battery-powered motor control circuits.
For engineers reviewing the ZTX696BSTOB datasheet, ZTX696BSTOB pinout, ZTX696BSTOB application, or ZTX696BSTOB equivalent, key selection criteria include VCEO = 180 V, hFE ≥ 500 @ IC = 100 mA, VCE(sat) ≤ 0.25 V @ IC = 200 mA / IB = 5 mA, fT = 70 MHz, and thermal resistance Rth(j-amb) = 175 °C/W (PCB mounted).
Technical Context
This NPN bipolar junction transistor operates as a medium-power switching and linear amplification device with high DC current gain and low saturation voltage. Its 180 V breakdown rating supports use in inductive load switching up to 145 V VCB, and its 70 MHz fT enables stable operation in pulse-width modulated (PWM) motor drive stages.
The device features a TO-92 package with emitter-base breakdown of 5 V and collector cut-off current < 0.1 µA at VCB = 145 V, ensuring reliable blocking in high-voltage Darlington configurations. Thermal derating begins at 25°C with 5.7 mW/°C reduction above ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 180 V - Supports switching of inductive loads up to 145 V with safety margin |
| hFE | 500 @ IC = 100 mA - Enables low-base-drive-current switching in battery-constrained systems |
| VCE(sat) | 0.25 V @ IC = 200 mA / IB = 5 mA - Minimizes conduction loss in relay and solenoid driver stages |
| fT | 70 MHz @ IC = 50 mA - Sufficient for PWM frequencies up to ~5–10 MHz with stable gain |
| Ptot | 1.5 W on 1 in² PCB copper - Delivers usable power handling without heatsink in compact designs |
| Rth(j-amb) | 175 °C/W - Requires thermal-aware layout but avoids forced-air cooling in ambient ≤ 60°C |
Pinout & Package
Package: TO-92 (E-Line compatible), epoxy-molded, through-hole mounting. Standard lead configuration with emitter (E), base (B), collector (C) arranged left-to-right when viewed with flat side facing user and leads downward.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| E (Emitter) | Current sink terminal for NPN operation | Connected to ground or low-side return path; must handle full load current |
| B (Base) | Control input for minority-carrier injection | Driven with 5–10 mA typical to saturate at IC ≤ 200 mA; requires current-limiting resistor |
| C (Collector) | High-side output terminal | Switches positive rail up to 180 V; connects to inductive load (relay coil, motor winding) |
Key Features
| Feature | Design Value |
|---|---|
| High VCEO rating | 180 V enables direct replacement of legacy high-voltage transistors in industrial controls |
| Low VCE(sat) | 0.25 V max reduces power loss by >30% vs. standard 0.35 V devices at 200 mA |
| High hFE | 500 gain allows microcontroller GPIOs to drive directly without buffer stage |
| Robust thermal performance | Rth(j-amb) = 175 °C/W on standard PCB meets EN 60747 reliability requirements |
Applications
| Relay Driver Circuit | Battery-Powered Motor Control |
|---|---|
Use Scenario: Driving 12–24 V DC relays in programmable logic controllers and HVAC control panels. IC Role / Device Role / Timing Role: High-voltage NPN switch controlling coil current; handles inductive kickback via external flyback diode. Use Value: 180 V VCEO provides 5× safety margin over 24 V nominal supply, reducing failure risk during transients. | Use Scenario: PWM-driven brushed DC motors in portable medical pumps and handheld tools. IC Role / Device Role / Timing Role: Low-saturation switch in half-bridge or single-ended topology; synchronized with MCU timer outputs. Use Value: VCE(sat) ≤ 0.25 V limits conduction loss to < 50 mW at 200 mA, extending battery life per cycle. |
| Darlington Pair Input Stage | Solenoid Actuation Module |
Use Scenario: First-stage amplifier in high-gain Darlington configurations for precision current sensing interfaces. IC Role / Device Role / Timing Role: Provides initial current gain before second transistor; biased in linear region for analog feedback paths. Use Value: hFE = 500 ensures stable bias point across -40°C to +125°C, minimizing drift in closed-loop systems. | Use Scenario: Driving 12–48 V solenoids in automotive door locks and industrial valve actuators. IC Role / Device Role / Timing Role: Fast-switching NPN switch with 80 ns turn-on and 4.4 µs turn-off for precise stroke timing. Use Value: 70 MHz fT supports clean edge integrity at 10 kHz PWM, preventing solenoid chatter or partial actuation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN high-voltage switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ZTX653BSTOB | VCEO = 100 V, hFE = 300 @ IC = 100 mA, Ptot = 1.0 W | Lower voltage rating restricts use to ≤ 48 V systems; reduced gain increases base drive burden | Select only if system voltage ≤ 60 V and thermal budget permits lower power dissipation |
| MJD122G | TO-220 package, VCEO = 100 V, hFE = 1000 @ IC = 1 A, Ptot = 25 W | Higher power handling but larger footprint; not drop-in for TO-92 PCB layouts | Choose when >1 A continuous current or heatsink integration is required |
Compared with ZTX653BSTOB and MJD122G, the ZTX696BSTOB uniquely balances 180 V capability, 500 hFE, and TO-92 form factor-making it optimal for space-constrained, medium-voltage industrial switching where gain and saturation voltage are critical.
Availability
ZTX696BSTOB is available at Aetrix Electronics and suitable for relay drivers, battery-powered motor control, solenoid actuation, and Darlington pair input stages requiring stable component supply across extended temperature ranges (-55°C to +200°C).
Supply support for ZTX696BSTOB 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 manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability components for industrial, automotive, and computing markets.
The ZTX series targets medium-power bipolar switching applications demanding high VCEO, low VCE(sat), and robust thermal performance in legacy-compatible through-hole packages.
FAQ
What is the maximum continuous collector current for ZTX696BSTOB?
The maximum continuous collector current is 0.5 A at Tamb = 25°C with proper PCB copper area (≥1 in²). At higher ambient temperatures, current must be reduced per the 5.7 mW/°C derating curve to maintain junction temperature ≤ 200°C.
Can ZTX696BSTOB replace BC548 or 2N2222 in high-voltage circuits?
No-BC548 (VCEO = 30 V) and 2N2222 (VCEO = 40 V) lack the 180 V rating. ZTX696BSTOB is intended for circuits where those devices would fail catastrophically due to overvoltage; it is not a direct functional substitute below 60 V.
Is a flyback diode required when using ZTX696BSTOB with relay coils?
Yes-a fast recovery or Schottky diode (e.g., 1N4148 or BAT54) must be placed across the relay coil to clamp inductive kickback. The transistor's 180 V VCEO provides margin but does not eliminate need for external protection against voltage spikes exceeding 145 V.
What is the safe operating area (SOA) limitation at DC conditions?
At DC, the SOA is bounded by Ptot = 1.5 W and VCE ≤ 180 V. For example, at VCE = 100 V, maximum IC = 15 mA; at VCE = 50 V, IC ≤ 30 mA. Pulse operation extends limits per the single-pulse SOA curve in the datasheet.
ZTX696BSTOB 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):
- 500 mA
- Voltage - Collector Emitter Breakdown (Max):
- 180 V
- Vce Saturation (Max) @ Ib, Ic:
- 250mV @ 5mA, 200mA
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 150 @ 200mA, 5V
- Power - Max:
- 1 W
- Frequency - Transition:
- 70MHz
- Operating Temperature:
- -55°C ~ 200°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- E-Line (TO-92 compatible)
ZTX696BSTOB FAQ
1.How can I place an order for ZTX696BSTOB through Aetrix?
Please submit a Request for Quotation (RFQ) for ZTX696BSTOB 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 ZTX696BSTOB reliable?
The price and inventory of ZTX696BSTOB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZTX696BSTOB is usually 5 days.
3.What payment methods are accepted for ZTX696BSTOB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZTX696BSTOB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZTX696BSTOB?
ZTX696BSTOB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZTX696BSTOB 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 ZTX696BSTOB?
For technical support, including ZTX696BSTOB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZTX696BSTOB requirements.
6.How does Aetrix verify that ZTX696BSTOB is sourced from the original manufacturer or authorized distributors?
All ZTX696BSTOB 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 ZTX696BSTOB meets industry standards.
7.What is the process for return or replacement of ZTX696BSTOB?
All ZTX696BSTOB units undergo pre-shipment inspection (PSI). If there is an issue with ZTX696BSTOB, 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 ZTX696BSTOB part is unused and in its original packaging.
Return procedure for ZTX696BSTOB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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