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Diodes Incorporated ZTX696BSTZ
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- Part No.:
- ZTX696BSTZ
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- E-Line-3, Formed Leads
- Datasheet:
-
ZTX696BSTZ.pdf
- Description:
- TRANS NPN 180V 0.5A E-LINE
- Quantity:
- Payment:
- Shipping:
Inventory:5,035
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Product details
Overview
ZTX696BSTZ 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 VCE(sat) = 0.2 V at IC = 50 mA / IB = 0.5 mA. It serves as a Darlington pair driver in battery-powered motor and relay control circuits.
For engineers reviewing the ZTX696BSTZ datasheet, ZTX696BSTZ pinout, ZTX696BSTZ application, or ZTX696BSTZ equivalent, key selection criteria include breakdown voltage margin (180 V), low saturation voltage for efficient switching, gain stability across IC = 100–200 mA, thermal resistance (Rth(j-amb) = 175 °C/W on 1-in² PCB), and safe operating area under pulsed 100 mA loads.
Technical Context
This NPN bipolar junction transistor features a planar silicon structure optimized for medium-power linear and switching applications. Its 180 V VCEO and VCBO ratings support high-voltage interface stages, while fT = 70 MHz enables reliable operation up to audio-frequency switching.
The device delivers VCE(sat) ≤ 0.25 V at IC = 200 mA / IB = 5 mA and maintains hFE ≥ 150 up to IC = 200 mA, supporting robust current amplification in base-driven load interfaces with minimal drive overhead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 180 V - supports direct switching of 120 V AC rectified rails or 48 V industrial bus loads without external snubbing |
| hFE | 500 (typ.) at IC = 100 mA - enables low-base-current drive for solenoid/relay coils requiring ~100 mA collector current |
| VCE(sat) | 0.2 V (max) at IC = 50 mA / IB = 0.5 mA - limits conduction loss to <10 mW in battery-critical 50 mA switching nodes |
| fT | 70 MHz - sufficient for PWM control up to 20 kHz with stable gain margin in motor gate-drive pre-stages |
| Ptot | 1.5 W (on PCB with 1 in² copper) - allows continuous 500 mA operation only with significant heatsinking; practical limit ~500 mA pulsed |
| Rth(j-amb) | 175 °C/W - requires ambient ≤ 75°C for Tj < 175°C at 500 mW dissipation on standard FR-4 |
Pinout & Package
Package: TO-92 (E-Line compatible, straight-lead variant). Standard lead configuration with emitter (E), base (B), and collector (C) assigned to pins 1, 2, and 3 respectively when viewed with flat side facing user and leads downward.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| E (Pin 1) | Emitter terminal | Reference node for bias network; connects to ground or low-side return path in common-emitter switches |
| B (Pin 2) | Base terminal | Current-controlled input; requires series resistor to limit IB to ≤5 mA for safe 200 mA IC operation |
| C (Pin 3) | Collector terminal | High-side switched output; directly drives inductive loads (relays, small DC motors) with flyback diode protection |
Key Features
| Feature | Design Value |
|---|---|
| High VCEO rating | 180 V enables direct interface with 120 VAC-derived DC rails without intermediate voltage reduction |
| Low VCE(sat) | 0.2 V at 50 mA reduces power loss by >60% vs. standard general-purpose transistors (e.g., BC547) |
| Gain consistency | hFE ≥ 150 up to IC = 200 mA ensures predictable base drive sizing across production batches |
| Thermal robustness | Junction temperature range –55°C to +200°C supports operation in automotive engine-bay or industrial heater-control environments |
Applications
| Relay Drivers | Battery-Powered Motor Control |
|---|---|
Use Scenario: Driving 12 V, 80 mA coil relays in portable test equipment with 3.3 V MCU GPIO. IC Role / Device Role / Timing Role: NPN switch providing current gain to translate logic-level signals into full coil activation. Use Value: VCE(sat) ≤ 0.25 V ensures <10 mW conduction loss, extending 2xAA battery life beyond 12 months at 10 actuations/day. | Use Scenario: Controlling 6 V, 300 mA brushed DC motors in handheld medical pumps. IC Role / Device Role / Timing Role: Medium-power switching element in single-transistor H-bridge half-legs or direction-controlled drivers. Use Value: 180 V VCEO provides 3× overvoltage margin against inductive kickback during abrupt stop commands. |
| Darlington Pair Pre-driver | Industrial Solenoid Interface |
Use Scenario: Base drive stage for MJD122 Darlington in 24 V PLC output modules. IC Role / Device Role / Timing Role: High-gain pre-amplifier delivering precise IB to main Darlington's base with minimal MCU loading. Use Value: hFE = 500 at IC = 100 mA allows 200 µA MCU output to fully saturate the Darlington, reducing system BOM count. | Use Scenario: Direct drive of 24 V, 150 mA industrial solenoids in factory automation I/O cards. IC Role / Device Role / Timing Role: Final-stage power switch interfacing microcontroller outputs to ruggedized electromagnetic actuators. Use Value: Rth(j-amb) = 175 °C/W permits continuous 150 mA operation at 60°C ambient without heatsink, simplifying enclosure design. |
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 |
|---|---|---|---|
| ZTX653BSTZ | VCEO = 100 V, hFE = 300 (min), VCE(sat) = 0.35 V @ IC = 100 mA | Lower voltage rating restricts use to ≤48 V systems; higher saturation loss increases thermal load | Select when cost sensitivity outweighs 180 V margin and lower VCE(sat) is noncritical |
| MPSA42 | VCEO = 300 V, hFE = 50 (min), VCE(sat) = 0.5 V @ IC = 30 mA | Higher voltage but significantly lower gain and higher saturation voltage; unsuitable for low-drive MCU interfaces | Prefer only in ultra-high-voltage, low-current (<30 mA) linear amplifier roles where gain is secondary |
Compared with ZTX653BSTZ and MPSA42, ZTX696BSTZ uniquely balances 180 V capability, 500 hFE, and sub-0.25 V saturation-making it optimal for battery-constrained, medium-current switching where both voltage headroom and drive efficiency matter.
Availability
ZTX696BSTZ is available at Aetrix Electronics and suitable for relay drivers, battery-powered motor control, Darlington pre-drivers, and industrial solenoid interfaces requiring stable component supply across long-lifecycle embedded programs.
Supply support for ZTX696BSTZ 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 solutions for industrial, computing, consumer, and communications markets.
ZTX696BSTZ belongs to the ZTX series of high-voltage, high-gain bipolar transistors designed specifically for demanding medium-power switching and amplification in space-constrained, thermally challenging environments.
FAQ
What is the maximum continuous collector current for ZTX696BSTZ at 25°C ambient?
The absolute maximum continuous collector current is 0.5 A per Absolute Maximum Ratings. However, practical operation is limited by power dissipation: at 25°C ambient and 1.5 W Ptot, sustained IC must remain ≤300 mA assuming VCE(sat) ≈ 0.25 V to avoid exceeding Tj = 175°C. Derating is required above 25°C.
Can ZTX696BSTZ replace a BC547 in a 12 V relay driver?
Yes, but with design adjustments: ZTX696BSTZ offers higher VCEO (180 V vs. 45 V) and lower VCE(sat) (0.2 V vs. 0.6 V), improving efficiency and voltage safety. Base resistor must be recalculated-its hFE of 500 requires ~1/5 the base current of BC547 (hFE ≈ 110), reducing MCU GPIO loading.
Is a heatsink required for ZTX696BSTZ in 500 mA pulsed operation?
No heatsink is required for pulsed operation at 500 mA with ≤2% duty cycle and 300 µs pulse width, as specified in the switching times test condition. Under these conditions, junction temperature rise remains within limits due to low average power. Continuous 500 mA operation would exceed Ptot and require heatsinking or derating.
Does ZTX696BSTZ have built-in ESD protection?
No-ZTX696BSTZ is a bare-die bipolar transistor without integrated ESD structures. External protection (e.g., series resistors + TVS diodes on base and collector) is recommended in handling and PCB layout, especially in automated assembly or field-replaceable modules exposed to human contact.
ZTX696BSTZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- E-Line-3, Formed Leads
- Packaging:
- Tape & Box (TB)
- Product Status:
- Active
- 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)
ZTX696BSTZ FAQ
1.How can I place an order for ZTX696BSTZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ZTX696BSTZ 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 ZTX696BSTZ reliable?
The price and inventory of ZTX696BSTZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZTX696BSTZ is usually 5 days.
3.What payment methods are accepted for ZTX696BSTZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZTX696BSTZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZTX696BSTZ?
ZTX696BSTZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZTX696BSTZ 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 ZTX696BSTZ?
For technical support, including ZTX696BSTZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZTX696BSTZ requirements.
6.How does Aetrix verify that ZTX696BSTZ is sourced from the original manufacturer or authorized distributors?
All ZTX696BSTZ 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 ZTX696BSTZ meets industry standards.
7.What is the process for return or replacement of ZTX696BSTZ?
All ZTX696BSTZ units undergo pre-shipment inspection (PSI). If there is an issue with ZTX696BSTZ, 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 ZTX696BSTZ part is unused and in its original packaging.
Return procedure for ZTX696BSTZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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