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onsemi 2N5962_D74Z
- Part No.:
- 2N5962_D74Z
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Datasheet:
-
2N5962_D74Z.pdf
- Description:
- TRANS NPN 45V 0.1A TO-92-3
- Quantity:
- Payment:
- Shipping:
Inventory:6,944
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Product details
Overview
2N5962_D74Z from Fairchild Semiconductor is a TO-92 packaged NPN general-purpose amplifier optimized for low-noise, high-gain signal amplification up to 50 mA collector current, with VCEO = 45 V, hFE ≥ 450 at IC = 10 µA, and NF = 3.0 dB at 1 kHz - used in preamplifier stages of audio and sensor interface circuits.
For engineers reviewing the 2N5962_D74Z datasheet, pinout, applications, or equivalent options, this page delivers verified package configuration (TO-92 radial ammo, EOL code D74Z), absolute maximum ratings, noise performance, DC gain behavior across bias conditions, and validated alternatives for discrete amplifier design.
Technical Context
This device operates as a silicon NPN bipolar junction transistor fabricated on Fairchild's Process 07, intended for linear amplification rather than switching. Its low noise figure (3.0–8.0 dB) and high hFE (450–1400) support stable small-signal gain in emitter-follower and common-emitter configurations at IC ≤ 10 mA.
Thermal limits are defined by RθJA = 200 °C/W (TO-92 on FR-4), TJ max = 150 °C, and PD = 625 mW at 25 °C - derated linearly above ambient. It shares electrical characteristics with 2N5088 but differs in process and gain distribution.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - Maximum safe collector-emitter voltage before breakdown; sets rail headroom for single-supply amplifier stages. |
| hFE (min) | 450 at IC = 10 µA - Ensures usable DC gain even at ultra-low bias, critical for micropower sensor front-ends. |
| NF | 3.0 dB at VCE = 5 V, IC = 10 µA, RS = 10 kΩ - Confirmed low-noise performance for high-impedance source amplification. |
| PD | 625 mW at TA = 25 °C - Defines continuous power handling on standard PCB; derates 5.0 mW/°C above 25 °C. |
| Ccb | 4.0 pF at VCB = 5 V - Limits high-frequency Miller effect; supports stable gain up to mid-MHz range. |
| TJ Range | −55 to +150 °C - Enables operation in industrial and automotive under-hood environments without derating. |
Pinout & Package
2N5962_D74Z is supplied in TO-92 radial ammo packaging (EOL code D74Z), with flat side oriented top-up and collector lead first exiting the package - matching JEDEC TO-92 mechanical standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Collector (C) | Current sink node | Primary output terminal in common-emitter configuration; connects to load or next stage input; rated for 45 V and 100 mA. |
| Base (B) | Control electrode | Input for bias current; requires ~0.65 V forward drop to turn on; drives hFE-scaled collector current. |
| Emitter (E) | Current source node | Reference terminal for bias network; often tied to ground or emitter degeneration resistor for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Low noise figure | 3.0 dB at 1 kHz enables high-SNR amplification of weak signals from microphones or piezoelectric sensors. |
| High DC current gain | hFE ≥ 450 at 10 µA supports stable biasing with high-resistance base networks, reducing power consumption. |
| Wide operating temperature | −55 to +150 °C junction range allows deployment in unheated enclosures or near heat sources without thermal shutdown. |
| TO-92 radial ammo format | D74Z packaging provides automated placement compatibility with standard pick-and-place feeders for high-yield SMT assembly. |
Applications
| Audio Preamp Stage | Sensor Signal Conditioning |
|---|---|
Use Scenario: Amplifying low-level microphone output (1–10 mV) before ADC sampling in portable voice recorders. IC Role / Device Role / Timing Role: NPN small-signal amplifier in common-emitter configuration with emitter degeneration. Use Value: 3.0 dB noise figure and hFE ≥ 600 at 1 mA ensure clean gain without introducing audible hiss or distortion. | Use Scenario: Boosting thermistor or photodiode current in battery-powered environmental monitors. IC Role / Device Role / Timing Role: Transimpedance or voltage follower amplifier with low input bias current and stable DC gain. Use Value: ICBO ≤ 2.0 nA and hFE ≥ 550 at 1 mA minimize offset drift and maximize signal-to-noise ratio over temperature. |
| Instrumentation Front-End | Industrial Analog Interface |
Use Scenario: First-stage gain block in handheld multimeters measuring µA-level currents. IC Role / Device Role / Timing Role: High-input-impedance common-collector buffer isolating sensitive measurement circuitry. Use Value: VBE(on) = 0.5–0.7 V and Ceb = 6.0 pF enable accurate DC coupling and minimal capacitive loading. | Use Scenario: Level-shifting and buffering analog outputs from PLC I/O modules to 4–20 mA transmitters. IC Role / Device Role / Timing Role: Linear amplifier driving precision current-source control loops. Use Value: VCEO = 45 V and TJ = −55 to +150 °C support reliable operation in electrically noisy factory environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN general-purpose amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 2N5088 | Same Process 07 family; identical VCEO, VCB, and noise specs; hFE min = 400 at IC = 10 µA (vs. 450 for 2N5962). | Validated for same low-noise preamp roles; slightly lower guaranteed gain margin at ultra-low IC. | Select 2N5088 when cost sensitivity outweighs marginal hFE requirement at sub-100 µA bias. |
| MMBT5962 | SOT-23 surface-mount variant; same electrical specs; RθJA = 357 °C/W (vs. 200 °C/W for TO-92); 0.0082 g vs. 0.198 g unit weight. | Used where board space and automated assembly are prioritized over thermal mass and through-hole robustness. | Choose MMBT5962 for compact, high-density designs requiring reflow compatibility and smaller footprint. |
Compared with 2N5088, the 2N5962_D74Z offers higher minimum hFE at low bias, improving gain predictability in micropower sensor nodes; versus MMBT5962, it trades thermal performance and mounting flexibility for mechanical ruggedness and legacy through-hole compatibility.
Availability
2N5962_D74Z is available at Aetrix Electronics and suitable for audio preamplifiers, sensor signal conditioning circuits, and industrial analog interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 2N5962_D74Z 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 manufacturer specializing in power management, analog, and discrete devices before its acquisition by ON Semiconductor in 2016.
The 2N5962_D74Z belongs to Fairchild's legacy NPN general-purpose amplifier product line, engineered for low-noise, high-gain linear amplification in industrial, instrumentation, and audio signal chains.
FAQ
What is the pin configuration of the 2N5962_D74Z in TO-92 radial ammo packaging?
The 2N5962_D74Z uses standard TO-92 pinout: Collector (C) is first lead exiting the package, Base (B) is center, Emitter (E) is last - with flat side oriented top-up per D74Z ammo specification. This matches JEDEC TO-92 mechanical standard and ensures compatibility with automated placement feeders calibrated for radial orientation.
Does the 2N5962_D74Z meet RoHS requirements?
The 2N5962_D74Z was manufactured prior to RoHS enforcement deadlines and is not RoHS-compliant. It contains lead in solder and die attach materials. For RoHS-compliant alternatives, consider the MMBT5962 (SOT-23) or ON Semiconductor's NSS60201LT1G, both compliant and functionally aligned.
What is the maximum continuous collector current rating for the 2N5962_D74Z?
The 2N5962_D74Z has an absolute maximum continuous collector current (IC) rating of 100 mA at TA = 25 °C. However, the device is characterized for optimal low-noise, high-gain operation up to 50 mA - exceeding that may degrade hFE consistency and increase thermal stress beyond safe junction limits.
How does the noise figure of the 2N5962_D74Z vary with collector current?
The 2N5962_D74Z exhibits a noise figure of 3.0 dB at IC = 10 µA and RS = 10 kΩ, rising to 6.0 dB at IC = 100 µA under same conditions. At higher currents (1 mA), NF increases further to 4.0–8.0 dB depending on source resistance - confirming its optimal use in ultra-low-current, high-impedance preamp stages.
Can the 2N5962_D74Z be used in switching applications?
The 2N5962_D74Z is characterized and optimized for linear amplification, not switching. Its VCE(sat) = 0.2 V at IC = 10 mA / IB = 0.5 mA confirms basic saturation capability, but lack of specified switching times, charge storage data, or SOA curves makes it unsuitable for reliable digital or PWM switching use.
2N5962_D74Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 100 mA
- Voltage - Collector Emitter Breakdown (Max):
- 45 V
- Vce Saturation (Max) @ Ib, Ic:
- 200mV @ 500µA, 10mA
- Current - Collector Cutoff (Max):
- 2nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 600 @ 10mA, 5V
- Power - Max:
- 625 mW
- Frequency - Transition:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92-3
2N5962_D74Z FAQ
1.How can I place an order for 2N5962_D74Z through Aetrix?
Please submit a Request for Quotation (RFQ) for 2N5962_D74Z 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 2N5962_D74Z reliable?
The price and inventory of 2N5962_D74Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2N5962_D74Z is usually 5 days.
3.What payment methods are accepted for 2N5962_D74Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2N5962_D74Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 2N5962_D74Z?
2N5962_D74Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 2N5962_D74Z 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 2N5962_D74Z?
For technical support, including 2N5962_D74Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2N5962_D74Z requirements.
6.How does Aetrix verify that 2N5962_D74Z is sourced from the original manufacturer or authorized distributors?
All 2N5962_D74Z 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 2N5962_D74Z meets industry standards.
7.What is the process for return or replacement of 2N5962_D74Z?
All 2N5962_D74Z units undergo pre-shipment inspection (PSI). If there is an issue with 2N5962_D74Z, 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 2N5962_D74Z part is unused and in its original packaging.
Return procedure for 2N5962_D74Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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