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Nexperia USA Inc. PZU84-B30R
- Part No.:
- PZU84-B30R
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PZU84-B30R.pdf
- Description:
- DIODE ZENER 30V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,666
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Product details
Overview
PZU84-B30R from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOT23 package, providing precise 30 V nominal regulation at 5 mA with 200 Ω differential resistance and −0.05 mV/K temperature coefficient. It delivers stable reference voltage for power supply feedback loops, overvoltage clamping, and analog signal conditioning in industrial control and sensor interface circuits.
For engineers reviewing the PZU84-B30R datasheet, PZU84-B30R pinout, PZU84-B30R application, or PZU84-B30R equivalent, this page details its verified Zener characteristics, thermal performance, SOT23 terminal mapping, and direct alternatives for 30 V regulation with low dynamic impedance and hard breakdown knee.
Technical Context
This device operates as a two-terminal shunt voltage reference, conducting reverse current above its 30 V nominal Zener voltage to maintain regulation across load variations. Its design emphasizes low leakage (≤0.05 μA at VR = 27 V) and sharp breakdown knee-critical for precision biasing and noise-sensitive analog stages.
The PZU84-B30R belongs to the "B" series variant optimized for very low dynamic impedance and minimal leakage, distinguishing it from the "C" series which trades leakage for faster switching and lower noise per AN90031. Thermal resistance from junction to solder point is 330 K/W, enabling reliable operation up to 150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 28.0 V to 32.0 V at IZ = 5 mA - ensures tight 30 V regulation under standard test conditions |
| Differential Resistance rdif | 200 Ω max at IZ = 5 mA - maintains stable output despite load current shifts |
| Reverse Current IR | ≤0.05 μA at VR = 27 V - minimizes parasitic loading in high-impedance reference nodes |
| Total Power Dissipation Ptot | 250 mW at Tamb = 25 °C on FR4 PCB - defines maximum continuous DC power handling |
| Non-repetitive Peak Power PZSM | 40 W at tp = 100 μs - supports transient surge suppression without failure |
| Junction Temperature Tj | −55 °C to +150 °C - enables deployment in extended-temperature industrial environments |
| Forward Voltage VF | ≤0.9 V at IF = 10 mA - allows use as forward-biased clamp or protection diode when needed |
Pinout & Package
Package: SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm lead pitch), rated for reflow and wave soldering per Figures 10–11.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward current entry point; connected to lower-potential node during regulation |
| 2 | Not Connected (n.c.) | Internally unconnected; must remain floating-no PCB trace or via allowed |
| 3 | Cathode (K) | Reverse-bias terminal tied to regulated voltage node; primary heat path to PCB solder point |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance | Reduces need for post-production trimming in precision voltage references |
| Hard breakdown knee | Enables clean turn-on behavior for overvoltage detection without hysteresis or delay |
| Very low leakage current | Preserves accuracy in high-impedance divider networks and battery-powered standby circuits |
| Low differential impedance (200 Ω) | Minimizes output voltage deviation under dynamic load changes in feedback paths |
| SOT23 footprint compatibility | Supports automated assembly and space-constrained PCB layouts typical in industrial modules |
Applications
| Industrial Power Supply Feedback | Automotive Sensor Reference |
|---|---|
Use Scenario: Regulating output of isolated flyback converter via optocoupler feedback loop. IC Role / Device Role / Timing Role: Shunt voltage reference establishing precise 30 V threshold for error amplifier input. Use Value: Maintains ±1 % output regulation across line/load/temperature with no external trimming required. |
Use Scenario: Providing stable bias voltage for MEMS pressure sensor signal conditioning circuitry. IC Role / Device Role / Timing Role: Low-leakage Zener reference source for ADC reference divider network. Use Value: Enables <1 LSB drift over −40 °C to +125 °C due to matched temperature coefficient and minimal IR error. |
| Overvoltage Clamp for MCU I/O | Programmable Threshold Detector |
Use Scenario: Protecting 3.3 V microcontroller GPIO pins against 24 V field wiring transients. IC Role / Device Role / Timing Role: Reverse-biased clamping diode limiting pin voltage to safe level. Use Value: Absorbs 40 W non-repetitive surges (100 μs) without degradation, preserving I/O integrity. |
Use Scenario: Setting trip point for comparator-based battery undervoltage lockout at 30 V nominal. IC Role / Device Role / Timing Role: Precision Zener defining hysteresis-free threshold voltage. Use Value: Delivers <±0.3 V total error (tolerance + tempco + dynamic impedance) across full operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C30 | ±5 % tolerance, 300 Ω rdif, higher leakage (≤0.1 μA at 27 V) | Acceptable where cost sensitivity outweighs precision; less suitable for low-current references | Select when budget constraints dominate and ±5 % regulation is sufficient for system-level accuracy |
| MMSZ5256B | ±5 % tolerance, 300 Ω rdif, SOD-123 package (larger footprint, higher Rth(j-a)) | Preferred for manual repair or high-power dissipation needs (>250 mW average) | Choose when thermal margin is critical and board space permits larger SOD-123 mounting |
Compared with PZU84-B30R, BZX84-C30 offers lower cost but sacrifices regulation accuracy and dynamic impedance; MMSZ5256B provides identical voltage rating in a thermally robust package but lacks the SOT23 size and low-leakage performance needed for compact, precision analog designs.
Availability
PZU84-B30R is available at Aetrix Electronics and suitable for industrial power supplies, sensor reference circuits, overvoltage protection systems, and programmable threshold detectors requiring stable component supply with guaranteed long-term sourcing.
Supply support for PZU84-B30R 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 logic, discrete, and MOSFET solutions for automotive, industrial, and consumer markets.
The PZU84 series belongs to Nexperia's general-purpose Zener regulator product line, engineered specifically for stable, low-leakage voltage reference and clamping in space-constrained SMT applications demanding E24-range coverage and ±2 % precision.
FAQ
What is the exact Zener voltage range for PZU84-B30R at 5 mA?
The PZU84-B30R has a guaranteed Zener voltage range of 28.0 V to 32.0 V when tested at IZ = 5 mA and Tj = 25 °C, reflecting its ±2 % tolerance around the nominal 30 V rating. This range is validated per Table 8 in the official Nexperia datasheet Rev. 4.
Is Pin 2 truly unconnected, and can it be grounded or left floating on PCB?
Yes, Pin 2 is internally not connected (n.c.) and must remain electrically floating-no trace, pad, or via should connect it. Grounding or routing to any net risks internal shorting or parametric shift. The SOT23 outline in Figure 9 confirms this terminal is isolated.
How does PZU84-B30R perform under pulsed reverse power stress?
It withstands up to 40 W non-repetitive peak reverse power for 100 μs square-wave pulses at Tj = 25 °C prior to surge, as defined in Table 5. This capability enables robust transient suppression in industrial I/O protection without derating beyond datasheet limits.
Can PZU84-B30R replace older PZM series Zeners in existing designs?
Yes, it is a direct functional replacement for PZM30T (SOT23, 30 V) with improved parameters: tighter ±2 % tolerance vs. ±5 %, lower rdif (200 Ω vs. 300 Ω), and reduced leakage. Pinout and footprint are identical, enabling drop-in upgrade without layout change.
PZU84-B30R 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):
- 30 V
- Tolerance:
- ±2%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 23 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-B30R FAQ
1.How can I place an order for PZU84-B30R through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU84-B30R 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-B30R reliable?
The price and inventory of PZU84-B30R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU84-B30R is usually 5 days.
3.What payment methods are accepted for PZU84-B30R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU84-B30R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU84-B30R?
PZU84-B30R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU84-B30R 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-B30R?
For technical support, including PZU84-B30R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU84-B30R requirements.
6.How does Aetrix verify that PZU84-B30R is sourced from the original manufacturer or authorized distributors?
All PZU84-B30R 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-B30R meets industry standards.
7.What is the process for return or replacement of PZU84-B30R?
All PZU84-B30R units undergo pre-shipment inspection (PSI). If there is an issue with PZU84-B30R, 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-B30R part is unused and in its original packaging.
Return procedure for PZU84-B30R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PZU84-B30R Tags
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