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Nexperia USA Inc. PZU84-B36R
- Part No.:
- PZU84-B36R
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PZU84-B36R.pdf
- Description:
- DIODE ZENER 36V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,705
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Product details
Overview
PZU84-B36R from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOT23 package, providing precise 36 V nominal regulation at 5 mA test current with 300 Ω differential resistance and −0.05 mV/K temperature coefficient. It delivers stable reference voltage for power supply feedback loops, overvoltage clamping in industrial sensor interfaces, and voltage monitoring in 24–48 V DC systems.
For engineers reviewing the PZU84-B36R datasheet, PZU84-B36R pinout, PZU84-B36R application, or PZU84-B36R equivalent, key selection criteria include its 36 V Zener voltage with tight ±2 % tolerance, low 300 Ω dynamic impedance at IZ = 5 mA, 250 mW steady-state power rating, and SOT23-3 surface-mount footprint compatible with automated assembly.
Technical Context
This device operates as a two-terminal shunt voltage reference, conducting reverse current above its specified breakdown voltage to maintain stable output voltage across varying load conditions. Its hard breakdown knee and low leakage (<0.05 μA at VR = 30.4 V) ensure clean regulation in low-power bias networks.
The PZU84-B36R belongs to the B-series variant optimized for very low dynamic impedance and minimal leakage-distinct from C-series parts designed for faster switching via controlled leakage rise. Thermal resistance from junction to ambient is 500 K/W on standard FR4 PCB, limiting continuous dissipation to 250 mW at 25 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 34.0 V to 38.0 V at IZ = 5 mA - defines regulated output range under standard test condition |
| Differential Resistance (rdif) | 300 Ω max at IZ = 5 mA - determines regulation stiffness against load current variation |
| Reverse Current (IR) | < 0.05 μA at VR = 30.4 V - ensures negligible standby power loss in high-impedance reference paths |
| Total Power Dissipation (Ptot) | 250 mW at Tamb = 25 °C on FR4 PCB - sets maximum continuous DC power handling in typical layout |
| Junction Temperature (Tj) | −55 °C to +150 °C - supports operation in extended industrial environments including motor control enclosures |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA - enables use as polarity protection diode in dual-role circuits |
| Non-repetitive Peak Power (PZSM) | 40 W for tp = 100 μs - allows transient overvoltage suppression without damage |
Pinout & Package
Package: SOT23-3 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch), rated for reflow and wave soldering per JEDEC standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward conduction terminal; connects to lower-potential node in shunt regulator configuration |
| 2 | Not Connected (n.c.) | Internally unconnected; must remain floating-no PCB trace or thermal pad connection permitted |
| 3 | Cathode (K) | Zener breakdown terminal; connects to regulated output node and current-limiting resistor |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance | Enables accurate voltage setting without post-production trimming in precision feedback networks |
| Hard breakdown knee | Ensures sharp, predictable turn-on behavior critical for overvoltage clamp reliability |
| Very low leakage current | Reduces error in high-impedance divider-based references and extends battery life in always-on circuits |
| Low differential impedance (300 Ω) | Maintains <±10 mV output shift across ±1 mA load current change in closed-loop regulators |
| SOT23-3 footprint compatibility | Supports high-density routing and automated placement on space-constrained PCBs |
Applications
| Industrial Power Supply Feedback | Automotive Body Control Module Clamp |
|---|---|
Use Scenario: Regulating output of isolated flyback converter using TL431-like topology with optocoupler feedback. IC Role / Device Role / Timing Role: Shunt reference element establishing precise 36 V threshold for error amplifier input. Use Value: Tight ±2 % VZ tolerance reduces need for external gain calibration; low rdif minimizes loop gain variation across line/load. |
Use Scenario: Clamping CAN transceiver supply rail during load-dump events in 24 V truck electronics. IC Role / Device Role / Timing Role: Transient voltage suppressor placed between VCC and ground to limit surge-induced overvoltage. Use Value: 40 W non-repetitive peak power rating absorbs 12 V/300 ms load dump energy without degradation; n.c. pin prevents unintended thermal coupling. |
| Programmable Logic Controller Input Protection | Medical Sensor Signal Conditioning |
Use Scenario: Protecting 36 V-rated analog input channel from ESD and field wiring faults in PLC backplane modules. IC Role / Device Role / Timing Role: Bidirectional overvoltage clamp (anode-to-ground, cathode-to-signal) with fast response. Use Value: Low 0.9 V forward drop enables effective negative-going transient suppression; SOT23 size fits dense I/O connector layouts. |
Use Scenario: Providing stable bias voltage for low-noise instrumentation amplifier powering thermistor bridge in portable diagnostic device. IC Role / Device Role / Timing Role: Precision voltage reference source for excitation current generation. Use Value: −0.05 mV/K temperature coefficient minimizes drift-induced measurement error over 0–50 °C 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-C36 | ±5 % tolerance, 300 Ω rdif at 5 mA, higher leakage (~0.1 μA at 30.4 V) | Acceptable where cost sensitivity outweighs precision; less suitable for low-power bias networks | Select when budget constraints dominate and ±5 % regulation accuracy suffices |
| MMSZ5241B | ±5 % tolerance, 350 Ω rdif, 500 mW Ptot, DO-213AA package | Higher power handling but larger footprint; unsuitable for ultra-dense SMT layouts | Choose only if thermal margin >250 mW is required and board area permits larger package |
Compared with BZX84-C36 and MMSZ5241B, the PZU84-B36R offers tighter ±2 % tolerance and lower leakage for precision reference use, while maintaining identical SOT23-3 footprint-making it optimal for space-constrained, accuracy-critical designs where cost premium is justified by performance.
Availability
PZU84-B36R is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, programmable logic controllers, and medical sensor conditioning requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for PZU84-B36R 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 delivering high-performance, reliable discrete, logic, and MOSFET devices with focus on efficiency, miniaturization, and robustness for industrial and consumer applications.
The PZU84 series belongs to Nexperia's general-purpose Zener regulator portfolio, engineered for stable voltage reference and overvoltage protection in compact SMT designs across automotive, industrial, and computing segments.
FAQ
What is the guaranteed Zener voltage range for PZU84-B36R at 5 mA test current?
The PZU84-B36R has a guaranteed Zener voltage range of 34.0 V to 38.0 V when measured at IZ = 5 mA and Tj = 25 °C. This ±2 % tolerance band is verified per production testing and applies across the full operating temperature range of −55 °C to +150 °C, with minor derating above 25 °C ambient due to temperature coefficient effects.
Can Pin 2 (n.c.) be used as a thermal pad or grounded for heat dissipation?
No-Pin 2 is internally not connected and must remain electrically floating. Connecting it to ground, power, or a thermal pad violates the device's internal construction and may cause unpredictable leakage, parametric shift, or premature failure. Thermal management relies solely on conduction through Pins 1 and 3 and PCB copper area under the package body.
How does the PZU84-B36R perform under repetitive surge conditions?
The PZU84-B36R is rated for non-repetitive peak reverse power of 40 W at tp = 100 μs, but it is not characterized for repetitive surges. For applications involving frequent transients, derating is required: cumulative surge energy must stay below single-pulse limits, and minimum inter-pulse intervals must allow full junction cooling to 25 °C to avoid thermal runaway.
Is the PZU84-B36R suitable for use in automotive powertrain systems?
No-the PZU84-B36R is not AEC-Q200 qualified and lacks automotive-grade screening, qualification testing, or guaranteed operation beyond 125 °C junction temperature. It is approved for industrial and consumer applications only; automotive powertrain use requires explicitly qualified alternatives such as the PZUxx-Ax series or equivalent AEC-Q200 Zeners.
PZU84-B36R 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):
- 36 V
- Tolerance:
- ±2%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 60 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 27 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-B36R FAQ
1.How can I place an order for PZU84-B36R through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU84-B36R 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-B36R reliable?
The price and inventory of PZU84-B36R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU84-B36R is usually 5 days.
3.What payment methods are accepted for PZU84-B36R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU84-B36R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU84-B36R?
PZU84-B36R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU84-B36R 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-B36R?
For technical support, including PZU84-B36R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU84-B36R requirements.
6.How does Aetrix verify that PZU84-B36R is sourced from the original manufacturer or authorized distributors?
All PZU84-B36R 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-B36R meets industry standards.
7.What is the process for return or replacement of PZU84-B36R?
All PZU84-B36R units undergo pre-shipment inspection (PSI). If there is an issue with PZU84-B36R, 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-B36R part is unused and in its original packaging.
Return procedure for PZU84-B36R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PZU84-B36R Tags
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