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onsemi 2N5771_D26Z
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- Part No.:
- 2N5771_D26Z
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-226-3, TO-92-3 (TO-226AA)
- Datasheet:
-
2N5771_D26Z.pdf
- Description:
- TRANS PNP 15V 0.2A TO-92-3
- Quantity:
- Payment:
- Shipping:
Inventory:5,934
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Product details
Overview
2N5771_D26Z from Fairchild Semiconductor is a PNP bipolar junction transistor designed for high-speed saturated switching at up to 100 mA collector current, with VCEO = 15 V, hFE = 35–120 (IC = 1–50 mA), and toff = 20 ns - used in pulse-width modulation circuits, discrete logic inverters, and low-power relay drivers.
For engineers reviewing the 2N5771_D26Z datasheet, pinout, applications, or equivalent options, this TO-92 packaged PNP transistor offers verified switching performance, thermal resistance RθJA = 357 °C/W on FR-4 PCB, and documented storage time (ts = 20 ns) for timing-critical digital interface designs.
Technical Context
The 2N5771_D26Z operates as a saturated-switching PNP BJT with negative-polarity voltage/current conventions. Its DC current gain hFE varies from 35 at IC = 1 mA to 40 at IC = 50 mA, and VCE(sat) remains ≤ 0.6 V under IC = 50 mA / IB = 5 mA drive.
Switching behavior is characterized by ton = 15 ns, toff = 20 ns, and ts = 20 ns at IC = 10 mA, VCC = 1.5 V, and matched base drive. Small-signal hfe = 8.5 MHz at IC = 10 mA, VCE = 10 V confirms usable bandwidth beyond basic switching.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 15 V - maximum safe collector-emitter voltage before breakdown in common-emitter configuration |
| IC (continuous) | 200 mA - absolute max DC collector current; rated switching operation limited to 100 mA per datasheet intent |
| hFE | 35–120 - DC current gain range across 1–50 mA collector current, enabling predictable base drive sizing |
| toff | 20 ns - verified turn-off delay under 10 mA load, supporting >10 MHz digital switching frequencies |
| RθJA | 357 °C/W - junction-to-ambient thermal resistance on standard 1.6" × 1.6" FR-4 PCB, defining power derating slope |
| VBE(sat) | 0.75–0.95 V - base-emitter saturation voltage at 1–50 mA IC, critical for TTL/CMOS-compatible drive level design |
Pinout & Package
2N5771_D26Z is supplied in TO-92 package (JEDEC TO-226AA), with lead configuration: Emitter (lead 1), Base (lead 2), Collector (lead 3), flat side facing viewer, leads down.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| E (Emitter) | Current source terminal for PNP operation | Connected to higher potential rail; base current flows out of emitter during conduction |
| B (Base) | Control electrode for minority-carrier injection | Requires negative-going signal relative to emitter to forward-bias BE junction and enable conduction |
| C (Collector) | Current sink terminal | Connected to load and lower-potential node; collector current flows into this terminal when saturated |
Key Features
| Feature | Design Value |
|---|---|
| High-speed switching | 20 ns turn-off time enables use in 10+ MHz clocked logic and PWM control stages |
| Saturated operation support | VCE(sat) ≤ 0.6 V at 50 mA ensures minimal power loss and heat generation in on-state |
| Wide temperature range | –55°C to +150°C operating junction range supports industrial and automotive under-hood applications |
| Low leakage | ICBO ≤ 10 nA at 8 V ensures stable off-state in battery-powered and high-impedance bias networks |
Applications
| LED Driver Circuits | Digital Logic Level Shifting |
|---|---|
Use Scenario: Driving multiplexed 20 mA LED segments in portable instrumentation displays. IC Role / Device Role / Timing Role: PNP switch sourcing current from VCC to LED anode, controlled by microcontroller GPIO. Use Value: Verified 20 ns toff prevents ghosting in high-refresh-rate multiplexing; VCE(sat) ≤ 0.18 V at 10 mA minimizes forward voltage drop. |
Use Scenario: Converting 3.3 V logic outputs to 5 V compatible signals in mixed-voltage MCU systems. IC Role / Device Role / Timing Role: Active-low level shifter using emitter-follower or common-emitter inversion topology. Use Value: hFE ≥ 50 at 1 mA ensures reliable switching with weak GPIO drive; –15 V VCBO rating accommodates 5 V rail margin. |
| Relay Coil Drivers | Pulse-Width Modulation Outputs |
Use Scenario: Switching 12 V, 40 mA relay coils in programmable logic controllers. IC Role / Device Role / Timing Role: Low-side PNP driver (emitter to 12 V, collector to relay coil, coil to GND) activated by active-low control. Use Value: 200 mA IC rating provides 5× safety margin; RθJA = 357 °C/W allows continuous operation without heatsink at ambient ≤ 50°C. |
Use Scenario: Generating variable-duty-cycle 5 V pulses for fan speed control in embedded thermal management. IC Role / Device Role / Timing Role: Saturated switch modulating average current through resistive or inductive load. Use Value: 15 ns ton and 20 ns toff support clean 500 kHz PWM with <5% dead-time distortion; VBE(sat) stability ensures consistent duty cycle accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP switching transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBT5771 | SOT-23 package (vs. TO-92); identical electrical specs; 0.0082 g unit weight vs. 0.198 g | Board space-constrained designs requiring surface-mount assembly; no lead-forming required | Select MMBT5771 when automated pick-and-place and PCB real estate optimization are priorities over through-hole serviceability. |
| 2N3906 | Lower fT (250 MHz vs. 8.5 MHz small-signal gain-bandwidth); hFE min = 100 at 10 mA (vs. 50 for 2N5771_D26Z) | General-purpose amplification and medium-speed switching where tighter hFE tolerance is needed | Choose 2N3906 for linear amplifier stages or where guaranteed minimum hFE > 100 is required; not recommended for >5 MHz switching due to slower stored charge removal. |
Compared with MMBT5771 and 2N3906, the 2N5771_D26Z delivers superior switching speed (20 ns toff) in a robust through-hole TO-92 package, making it optimal for prototyping, repair, and legacy through-hole production where thermal mass and manual handling matter.
Availability
2N5771_D26Z is available at Aetrix Electronics and suitable for LED driver circuits, relay coil drivers, digital logic level shifting, and pulse-width modulation outputs requiring stable component supply and long-term obsolescence mitigation.
Supply support for 2N5771_D26Z 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
Fairchild Semiconductor was a U.S.-based semiconductor company specializing in power management, analog, and discrete components before its acquisition by ON Semiconductor in 2016.
The 2N5771_D26Z belongs to Fairchild's legacy general-purpose PNP transistor product line, engineered specifically for high-reliability saturated switching in industrial control and instrumentation applications.
FAQ
What is the pin configuration of the 2N5771_D26Z?
The 2N5771_D26Z uses TO-92 package with standard pinout: lead 1 = Emitter, lead 2 = Base, lead 3 = Collector, viewed with flat side facing the user and leads pointing downward. This matches JEDEC TO-226AA mechanical specification and is confirmed in Fairchild's packaging drawings for D26Z tape-and-reel variant.
Does the 2N5771_D26Z support pulsed operation beyond its DC ratings?
Yes - the 2N5771_D26Z supports pulsed operation with ≤300 µs pulse width and ≤2.0% duty cycle, as specified in its switching characteristics table. For such conditions, peak IC may exceed 100 mA, but thermal limits and stored charge effects must be validated per application; consult Fairchild's application notes for transient derating curves.
What is the maximum operating temperature for the 2N5771_D26Z junction?
The 2N5771_D26Z has a maximum junction temperature (TJ) of +150°C, with operating range specified from –55°C to +150°C. This rating is tied to its absolute maximum thermal characteristics and requires adherence to RθJA = 357 °C/W derating on standard FR-4 PCB per Fairchild's thermal test conditions.
Is the 2N5771_D26Z RoHS compliant?
The 2N5771_D26Z was manufactured prior to full RoHS enforcement and is not certified RoHS-compliant. It contains lead in solderable leads and falls under legacy exemption categories; for new designs requiring RoHS compliance, MMBT5771 (SOT-23) or modern alternatives like NSS60201MR6T1 should be evaluated.
How does the 2N5771_D26Z compare to the PN4258 in terms of specifications?
The 2N5771_D26Z shares core electrical parameters with the PN4258 - including VCEO = 15 V, VCE(sat) ≤ 0.6 V, and toff = 20 ns - as explicitly noted in Fairchild's datasheet footnote "See PN4258 for characteristics." Both are PNP switching transistors from Process 65, but PN4258 data sheet shows tighter hFE distribution and slightly improved Ccb (2.5 pF vs. 3.0 pF).
2N5771_D26Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Transistor Type:
- PNP
- Current - Collector (Ic) (Max):
- 200 mA
- Voltage - Collector Emitter Breakdown (Max):
- 15 V
- Vce Saturation (Max) @ Ib, Ic:
- 600mV @ 5mA, 50mA
- Current - Collector Cutoff (Max):
- 10nA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 50 @ 10mA, 300mV
- Power - Max:
- 350 mW
- Frequency - Transition:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92-3
2N5771_D26Z FAQ
1.How can I place an order for 2N5771_D26Z through Aetrix?
Please submit a Request for Quotation (RFQ) for 2N5771_D26Z 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 2N5771_D26Z reliable?
The price and inventory of 2N5771_D26Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2N5771_D26Z is usually 5 days.
3.What payment methods are accepted for 2N5771_D26Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2N5771_D26Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 2N5771_D26Z?
2N5771_D26Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 2N5771_D26Z 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 2N5771_D26Z?
For technical support, including 2N5771_D26Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2N5771_D26Z requirements.
6.How does Aetrix verify that 2N5771_D26Z is sourced from the original manufacturer or authorized distributors?
All 2N5771_D26Z 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 2N5771_D26Z meets industry standards.
7.What is the process for return or replacement of 2N5771_D26Z?
All 2N5771_D26Z units undergo pre-shipment inspection (PSI). If there is an issue with 2N5771_D26Z, 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 2N5771_D26Z part is unused and in its original packaging.
Return procedure for 2N5771_D26Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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