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onsemi 2N5401_J61Z
- Part No.:
- 2N5401_J61Z
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Datasheet:
-
2N5401_J61Z.pdf
- Description:
- TRANS PNP 150V 0.6A TO-92-3
- Quantity:
- Payment:
- Shipping:
Inventory:9,260
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Product details
Overview
2N5401_J61Z from Fairchild Semiconductor is a PNP epitaxial silicon small-signal transistor rated for -150 V VCEO, -600 mA IC, and 625 mW PC, optimized for high-voltage amplification and switching in discrete analog stages of power supplies, signal conditioning circuits, and interface drivers.
For engineers reviewing the 2N5401_J61Z datasheet, pinout, applications, or equivalent options, key selection criteria include verified VCEO = -150 V, hFE = 30–240 at IC = -1 to -50 mA, fT = 100–400 MHz, low saturation voltage (VCE(sat) = -0.2 V @ -10 mA/-1 mA), and TO-92 package compatibility with legacy through-hole designs.
Technical Context
This PNP bipolar junction transistor operates with reverse-polarity biasing: emitter positive relative to base and collector. Its breakdown ratings-VCBO = -160 V, VCEO = -150 V, VEBO = -5 V-support high-side switching and cascode amplifier configurations where collector swings near ground-referenced rails.
DC current gain (hFE) varies from 30 at IC = -1 mA to 50 at IC = -50 mA (typical), while VCE(sat) remains ≤ -0.5 V up to -50 mA drive, enabling efficient linear and saturated-mode operation. fT ≥ 100 MHz confirms suitability for audio-frequency amplification and low-speed digital switching.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | -150 V - Maximum safe collector-emitter reverse voltage before avalanche breakdown |
| IC | -600 mA - Continuous DC collector current rating under thermal limits |
| PC | 625 mW - Maximum power dissipation at TA = 25°C, derated above 25°C |
| hFE | 30–240 - DC current gain range across IC = -1 mA to -50 mA, critical for bias stability |
| fT | 100–400 MHz - Unity-gain bandwidth confirming usable gain up to mid-VHF frequencies |
| VCE(sat) | -0.2 V @ -10 mA/-1 mA - Low saturation voltage enables minimal conduction loss in switch mode |
| Cob | 6 pF @ VCB = -10 V - Output capacitance affecting high-frequency response and Miller effect |
Pinout & Package
2N5401_J61Z is housed in a standard TO-92 plastic package with 3 leads. Pin identification follows the "Emitter-Base-Collector" (E-B-C) sequence when viewing the flat side with leads downward.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 (left) | Emitter | Current source terminal; connects to most positive node in PNP operation |
| Lead 2 (center) | Base | Control input; negative-going current turns device ON |
| Lead 3 (right) | Collector | Current sink terminal; typically tied to load or supply return |
Key Features
| Feature | Design Value |
|---|---|
| High VCEO rating | Supports -150 V rail operation without breakdown in high-side switch or active load applications |
| Low VCE(sat) | Reduces power loss and self-heating during saturated switching, improving efficiency in discrete logic interfaces |
| Wide hFE range | Enables stable DC bias design across production lots and temperature variations from -55°C to +150°C |
| 100+ MHz fT | Permits use in audio preamplifiers, tone control networks, and low-speed pulse shaping circuits |
| TO-92 mechanical compatibility | Direct drop-in replacement for legacy PNP transistors in existing through-hole PCB layouts and hand-soldered assemblies |
Applications
| High-Voltage Switching | Audio Amplifier Stage |
|---|---|
Use Scenario: Discrete high-side switch controlling relay coils or LED strings operating from -12 V to -48 V rails. IC Role / Device Role / Timing Role: PNP transistor used as saturated switch with base driven by microcontroller GPIO or op-amp output. Use Value: VCEO = -150 V ensures margin against inductive kickback; VCE(sat) ≤ -0.5 V minimizes heat generation at 100–500 mA loads. | Use Scenario: First-stage common-emitter preamplifier in battery-powered guitar effects pedals or microphone front-ends. IC Role / Device Role / Timing Role: Linear amplifier biased at IC = -1 mA with VCE = -5 V for low-noise, high-input-impedance gain. Use Value: NF = 8 dB at 10 Hz–15.7 kHz and hFE ≥ 30 ensure clean signal amplification without distortion or excessive bias drift. |
| Discrete Logic Interface | Current Mirror Reference |
Use Scenario: Level-shifting interface between 3.3 V CMOS logic and -5 V TTL-compatible peripherals. IC Role / Device Role / Timing Role: Inverter/level shifter with emitter tied to -5 V rail and collector pulled up to logic-high reference. Use Value: Fast turn-off (Cob = 6 pF) and predictable VBE(sat) = -1 V enable reliable sub-microsecond edge transitions. | Use Scenario: Precision two-transistor current mirror in analog sensor signal conditioning ICs or voltage references. IC Role / Device Role / Timing Role: Matched PNP pair (with 2N5551 or similar NPN) establishing stable bias currents independent of supply variation. Use Value: Tight hFE spread and low ICBO = -50 nA support <1% mirror ratio error over temperature and time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP small-signal transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPSA92 | VCEO = -300 V, hFE = 25–200, TO-92 package, same pinout (E-B-C) | Higher breakdown allows use in > -200 V flyback snubbers or CRT deflection circuits | Select when higher voltage margin is required; verify layout thermal relief for 625 mW dissipation |
| BC557 | VCEO = -45 V, hFE = 110–800, TO-92, E-B-C pinout | Lower voltage rating restricts use to ≤ -30 V logic and low-voltage analog stages | Choose only for cost-sensitive, low-voltage designs where -150 V rating is unnecessary |
Compared with MPSA92 and BC557, the 2N5401_J61Z delivers optimal balance of high-voltage capability (-150 V), moderate gain (30–240), and proven thermal reliability in TO-92-making it preferred for industrial power supply feedback, telecom line interface, and legacy equipment repair where exact VCEO and saturation behavior matter.
Availability
2N5401_J61Z is available at Aetrix Electronics and suitable for high-voltage switching, audio preamplification, discrete logic interfacing, and current mirror reference applications requiring stable component supply and long-term obsolescence management.
Supply support for 2N5401_J61Z 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 2N5401_J61Z belongs to Fairchild's legacy general-purpose PNP transistor product line, designed specifically for robust, high-voltage analog and switching functions in industrial controls, telecom infrastructure, and consumer electronics.
FAQ
What is the pin configuration of the 2N5401_J61Z?
The 2N5401_J61Z uses a TO-92 package with Emitter-Base-Collector (E-B-C) pinout: Lead 1 (left) is Emitter, Lead 2 (center) is Base, and Lead 3 (right) is Collector when viewing the flat side with leads pointing down. This matches JEDEC TO-92 standard orientation and is confirmed in Fairchild's Rev. B datasheet.
What is the maximum collector current rating for the 2N5401_J61Z?
The 2N5401_J61Z has a maximum continuous collector current (IC) rating of -600 mA at TA = 25°C. Derating is required above ambient temperature, and pulsed operation (≤300 µs, ≤2% duty cycle) supports higher peak currents within thermal limits defined in the Absolute Maximum Ratings table.
Does the 2N5401_J61Z have a specified noise figure?
Yes, the 2N5401_J61Z has a specified noise figure of 8 dB measured at IC = -250 µA, VCE = -5 V, RS = 1 kΩ, and frequency range 10 Hz to 15.7 kHz. This value is documented in the Electrical Characteristics table and supports its use in low-noise audio preamplifier stages.
Can the 2N5401_J61Z be used as a direct replacement for the 2N5551?
No-the 2N5551 is an NPN transistor with VCEO = +160 V and complementary polarity. The 2N5401_J61Z is a PNP device and cannot functionally replace the 2N5551 without circuit redesign. However, it is commonly paired with the 2N5551 in complementary amplifier or current mirror topologies.
What is the junction temperature limit for the 2N5401_J61Z?
The 2N5401_J61Z has a maximum junction temperature (TJ) rating of +150°C, as specified in the Absolute Maximum Ratings section. Operation beyond this limit risks permanent degradation of hFE, increased leakage, or thermal runaway-especially under sustained 625 mW dissipation without adequate heatsinking.
2N5401_J61Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Transistor Type:
- PNP
- Current - Collector (Ic) (Max):
- 600 mA
- Voltage - Collector Emitter Breakdown (Max):
- 150 V
- Vce Saturation (Max) @ Ib, Ic:
- 500mV @ 5mA, 50mA
- Current - Collector Cutoff (Max):
- 50nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 60 @ 10mA, 5V
- Power - Max:
- 625 mW
- Frequency - Transition:
- 400MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92-3
2N5401_J61Z FAQ
1.How can I place an order for 2N5401_J61Z through Aetrix?
Please submit a Request for Quotation (RFQ) for 2N5401_J61Z 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 2N5401_J61Z reliable?
The price and inventory of 2N5401_J61Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2N5401_J61Z is usually 5 days.
3.What payment methods are accepted for 2N5401_J61Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2N5401_J61Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 2N5401_J61Z?
2N5401_J61Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 2N5401_J61Z 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 2N5401_J61Z?
For technical support, including 2N5401_J61Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2N5401_J61Z requirements.
6.How does Aetrix verify that 2N5401_J61Z is sourced from the original manufacturer or authorized distributors?
All 2N5401_J61Z 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 2N5401_J61Z meets industry standards.
7.What is the process for return or replacement of 2N5401_J61Z?
All 2N5401_J61Z units undergo pre-shipment inspection (PSI). If there is an issue with 2N5401_J61Z, 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 2N5401_J61Z part is unused and in its original packaging.
Return procedure for 2N5401_J61Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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