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Nexperia USA Inc. PZU84-C2V4R
- Part No.:
- PZU84-C2V4R
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PZU84-C2V4R.pdf
- Description:
- DIODE ZENER 2.4V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,948
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Product details
Overview
PZU84-C2V4R from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOT23 package, providing precise 2.4 V nominal regulation at 5 mA with 1000 Ω differential resistance and −3.5 mV/K temperature coefficient. It delivers low-leakage, hard-knee breakdown for stable reference generation in low-power analog circuits and microcontroller supply rail clamping.
For engineers reviewing the PZU84-C2V4R datasheet, PZU84-C2V4R pinout, PZU84-C2V4R application, or PZU84-C2V4R equivalent, this page details its exact Zener regulation behavior, thermal limits, SOT23 terminal mapping, and verified alternatives for precision 2.4 V reference design.
Technical Context
This device operates as a two-terminal shunt voltage regulator, conducting reverse current above its 2.4 V nominal Zener voltage to maintain stable output under varying load conditions. Its hard breakdown knee and low dynamic impedance (1000 Ω at IZ = 5 mA) ensure minimal voltage deviation across operating current range.
Designed for ambient temperatures from −55 °C to +150 °C, it features a negative temperature coefficient of −3.5 mV/K and junction-to-ambient thermal resistance of 500 K/W on FR4 PCB. The not-connected (n.c.) pin enables mechanical stability without electrical function.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 2.30 V to 2.60 V at IZ = 5 mA - defines tight 2.4 V regulation window for precision biasing |
| Differential Resistance rdif | 1000 Ω at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Temperature Coefficient SZ | −3.5 mV/K - quantifies voltage drift per degree Celsius, critical for thermal stability |
| Reverse Current IR | 1.0 μA at VR = 1.0 V - confirms low leakage for battery-powered standby operation |
| Total Power Dissipation Ptot | 250 mW at Tamb = 25 °C - sets maximum continuous DC power handling on standard FR4 layout |
| Forward Voltage VF | 0.9 V at IF = 10 mA - defines forward conduction threshold for polarity-sensitive protection |
| Junction Temperature Tj | 150 °C maximum - constrains thermal derating in enclosed or high-ambient environments |
Pinout & Package
Package: SOT23 plastic surface-mounted package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch), optimized for automated reflow assembly on FR4 PCBs with single-sided 70 μm copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward current entry point; reverse-biased during Zener operation |
| 2 | Not Connected (n.c.) | Mechanical support only; no internal semiconductor connection |
| 3 | Cathode (K) | Reference voltage output node; connected to regulated rail or ground return |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance | Enables direct use in 2.4 V reference designs without post-calibration trimming |
| Hard breakdown knee | Ensures sharp, predictable turn-on for reliable overvoltage clamping in 3.3 V logic rails |
| Very low leakage current | 1.0 μA at 1.0 V reverse bias supports multi-year battery life in always-on sensor nodes |
| Low dynamic impedance | 1000 Ω at 5 mA stabilizes output against load transients in ADC reference buffers |
| SOT23 footprint compatibility | Matches industry-standard 3-pin SMT land pattern for drop-in replacement and board reuse |
Applications
| Microcontroller Reset Circuit | ADC Reference Clamp |
|---|---|
Use Scenario: Generating a stable 2.4 V threshold for brown-out detection in ARM Cortex-M0+ systems. IC Role / Device Role / Timing Role: Shunt Zener regulator providing fixed reference voltage to reset supervisor IC input. Use Value: Tight ±2 % tolerance ensures reset assertion within 2.30–2.60 V window, preventing premature or delayed resets. |
Use Scenario: Clamping the reference input of a 12-bit SAR ADC to prevent overvoltage damage during transient events. IC Role / Device Role / Timing Role: Reverse-biased Zener acting as fast-acting voltage limiter on VREF rail. Use Value: Hard breakdown knee and 1000 Ω dynamic impedance limit excursion to ≤2.60 V at 5 mA, preserving ADC linearity. |
| Low-Power Sensor Biasing | USB-C VBUS Monitoring |
Use Scenario: Supplying a stable 2.4 V bias to a thermistor-based temperature sensing circuit in IoT edge node. IC Role / Device Role / Timing Role: Precision shunt regulator establishing known excitation voltage for resistive divider. Use Value: −3.5 mV/K temperature coefficient compensates for thermistor NTC drift, improving measurement accuracy over −40 °C to +85 °C. |
Use Scenario: Level-shifting and clamping USB-C VBUS (5 V nominal) down to 2.4 V for monitoring by 3.3 V microcontroller GPIO. IC Role / Device Role / Timing Role: Zener clamp protecting MCU input while enabling accurate voltage division ratio. Use Value: 1.0 μA leakage at 1.0 V ensures negligible loading on voltage divider, maintaining <0.1 % measurement error. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C2V4 | ±5 % tolerance, 1200 Ω rdif at 5 mA, −3.0 mV/K SZ | Higher voltage variation (2.28–2.52 V) and reduced thermal stability | Select when cost sensitivity outweighs precision requirements and thermal drift is acceptable |
| MMSZ4676T1G | ±5 % tolerance, 1500 Ω rdif, −2.5 mV/K SZ, 350 mW Ptot | Higher power rating but looser regulation and weaker thermal tracking | Prefer for higher-current clamping where 2.4 V accuracy is secondary to surge robustness |
Compared with PZU84-C2V4R, BZX84-C2V4 offers lower cost but sacrifices 3× tighter voltage tolerance and 0.5 mV/K better thermal coefficient; MMSZ4676T1G trades regulation precision for 40 % higher power handling, making it suitable only where 2.4 V accuracy is non-critical.
Availability
PZU84-C2V4R is available at Aetrix Electronics and suitable for microcontroller reset circuits, ADC reference clamping, low-power sensor biasing, and USB-C VBUS monitoring requiring stable component supply with guaranteed long-term continuity.
Supply support for PZU84-C2V4R 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
Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified and industrial-grade components.
The PZU84 series belongs to Nexperia's general-purpose Zener regulator product line, engineered specifically for precision voltage reference and clamping in space-constrained, low-power consumer and industrial applications.
FAQ
What is the maximum continuous reverse current for PZU84-C2V4R at 25 °C?
The device supports up to 200 mA forward current, but its Zener operation is defined by power dissipation limits. At 25 °C ambient, maximum continuous reverse current is calculated as Ptot/VZ = 250 mW / 2.4 V ≈ 104 mA - exceeding this risks thermal runaway due to 500 K/W junction-to-ambient resistance.
Can PZU84-C2V4R be used in place of a 2.5 V Zener diode?
No - its nominal Zener voltage is 2.4 V with a guaranteed range of 2.30–2.60 V at 5 mA. Substituting for a 2.5 V part introduces up to 4 % systematic offset, which may violate reset threshold or reference accuracy requirements in precision circuits.
How does the n.c. pin affect PCB layout or thermal performance?
Pin 2 is internally unconnected and serves only mechanical anchoring. It must be left floating on the PCB; soldering it to ground or power has no electrical effect but may slightly improve thermal conduction via the copper pad, though Rth(j-sp) remains 330 K/W to cathode solder point.
Is PZU84-C2V4R qualified for automotive applications?
No - the datasheet explicitly states this is a non-automotive qualified product. It lacks AEC-Q101 stress testing, automotive-grade process controls, and extended temperature validation beyond −55 °C to +150 °C ambient. Automotive designs require Nexperia's AUTOMOTIVE-grade Zener series.
PZU84-C2V4R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- PZU84
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 2.4 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 50 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
PZU84-C2V4R FAQ
1.How can I place an order for PZU84-C2V4R through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU84-C2V4R 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 PZU84-C2V4R reliable?
The price and inventory of PZU84-C2V4R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU84-C2V4R is usually 5 days.
3.What payment methods are accepted for PZU84-C2V4R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU84-C2V4R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU84-C2V4R?
PZU84-C2V4R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU84-C2V4R 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 PZU84-C2V4R?
For technical support, including PZU84-C2V4R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU84-C2V4R requirements.
6.How does Aetrix verify that PZU84-C2V4R is sourced from the original manufacturer or authorized distributors?
All PZU84-C2V4R 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 PZU84-C2V4R meets industry standards.
7.What is the process for return or replacement of PZU84-C2V4R?
All PZU84-C2V4R units undergo pre-shipment inspection (PSI). If there is an issue with PZU84-C2V4R, 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 PZU84-C2V4R part is unused and in its original packaging.
Return procedure for PZU84-C2V4R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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