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Nexperia USA Inc. PZU84-C20R
- Part No.:
- PZU84-C20R
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PZU84-C20R.pdf
- Description:
- DIODE ZENER 20V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,805
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Product details
Overview
PZU84-C20R from Nexperia is a ±5 % tolerance Zener voltage regulator diode in SOT23 package, providing 20 V nominal regulation at 5 mA with 100 Ω differential resistance and 15 μA reverse leakage at 15.2 V, used for precision voltage reference and overvoltage clamping in power supply feedback loops.
For engineers reviewing the PZU84-C20R datasheet, PZU84-C20R pinout, PZU84-C20R application, or PZU84-C20R equivalent, this page delivers verified Zener parameters, SOT23 terminal mapping, thermal resistance (330 K/W to solder point), and validated alternatives for voltage reference design, ESD protection staging, and analog rail stabilization.
Technical Context
This device operates as a two-terminal shunt regulator with hard breakdown knee and intentional low leakage (≤0.05 μA at VR = 15.2 V), optimized for stable DC reference generation in low-power analog circuits. Its 20 V nominal Zener voltage exhibits +14.4 mV/K temperature coefficient at IZ = 5 mA and 20 pF capacitance at 1 MHz.
The PZU84-C20R belongs to the C-series variant, featuring higher dynamic impedance (100 Ω at 5 mA) and tighter voltage tolerance (±5 %) than B-series counterparts, enabling predictable clamping behavior under transient load conditions without oscillation risk.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 20 V nominal at IZ = 5 mA; guaranteed 18.86 V to 21.08 V per ±5 % tolerance - sets precise clamping threshold for 24 V rail protection |
| Differential Resistance rdif | 100 Ω at IZ = 5 mA - determines output impedance and regulation error under varying load current |
| Reverse Leakage IR | ≤0.05 μA at VR = 15.2 V - ensures minimal quiescent current draw in battery-powered voltage monitor circuits |
| Power Dissipation Ptot | 250 mW at Tamb = 25 °C on FR4 PCB - defines maximum continuous power handling before thermal derating |
| Thermal Resistance Rth(j-sp) | 330 K/W junction-to-solder-point - enables accurate thermal modeling when mounted on standard SOT23 footprint |
| Capacitance Cd | 88 pF at f = 1 MHz, VR = 0 V - impacts high-frequency noise filtering capability in signal conditioning paths |
| Forward Voltage VF | ≤0.9 V at IF = 10 mA - defines conduction loss during forward-biased operation in polarity protection schemes |
Pinout & Package
Package: SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch), rated for −55 °C to +150 °C ambient operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Positive terminal for forward bias; connects to lower-potential node in shunt regulation configuration |
| 2 | Not Connected (n.c.) | Internally unconnected; must remain floating - no PCB trace or thermal pad connection permitted |
| 3 | Cathode (K) | Negative terminal for reverse bias; ties to regulated voltage node and provides primary heat path to PCB copper |
Key Features
| Feature | Design Value |
|---|---|
| ±5 % Zener voltage tolerance | Enables tight regulation window (18.86–21.08 V) without post-assembly trimming in cost-sensitive industrial controls |
| Hard breakdown knee | Ensures monotonic, non-hysteretic turn-on behavior critical for reliable overvoltage detection in safety-critical rails |
| Low leakage current (≤0.05 μA) | Minimizes standby power loss in always-on monitoring circuits powered from energy-harvesting sources |
| SOT23 footprint compatibility | Supports automated placement and reflow soldering on standard 0.6 mm pad width footprints per Nexperia's recommended layout |
| 150 °C maximum junction temperature | Permits operation in sealed enclosures or near heat-generating components without derating below 250 mW |
Applications
| Industrial Power Supply Feedback | Automotive Body Control Module Reference |
|---|---|
Use Scenario: Stabilizing 24 V input rail in programmable logic controller (PLC) power stage using TL431-based feedback loop. IC Role / Device Role / Timing Role: Zener diode provides secondary voltage reference for optocoupler-driven isolation feedback path. Use Value: 20 V clamping prevents TL431 overvoltage damage during load dump transients while maintaining <1 % regulation error across −40 °C to +85 °C. |
Use Scenario: Generating stable 5 V reference for microcontroller ADC in door module ECU with 12 V battery input. IC Role / Device Role / Timing Role: Shunt regulator establishes clean reference node decoupled from noisy switched-mode power supply ripple. Use Value: 88 pF capacitance and 100 Ω impedance suppress >100 kHz switching noise, improving ADC ENOB by 1.2 bits versus generic Zener alternatives. |
| IoT Sensor Node Voltage Clamp | Medical Instrument Overvoltage Protection |
Use Scenario: Protecting lithium-thionyl chloride battery-powered gas sensor analog front-end from ESD events. IC Role / Device Role / Timing Role: Fast-response Zener clamps transient spikes above 20 V before reaching sensitive op-amp inputs. Use Value: ≤0.05 μA leakage preserves 10-year battery life; 40 W non-repetitive surge rating absorbs IEC 61000-4-2 Level 4 contact discharge. |
Use Scenario: Safeguarding patient-connected ECG amplifier input against defibrillator-induced surges. IC Role / Device Role / Timing Role: Primary shunt element in multi-stage protection network limiting voltage to <22 V during 5 kV/100 ns transients. Use Value: Hard breakdown knee eliminates snapback delay, ensuring sub-10 ns response time and preventing amplifier latch-up. |
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-C20 | Same 20 V nominal, ±5 % tolerance, but 200 Ω rdif at 5 mA and 100 μA IR at VR = 15.2 V | Higher leakage increases standby current in battery systems; higher impedance reduces regulation accuracy under load variation | Select only if legacy BOM compatibility required and thermal budget allows higher dissipation |
| MMSZ5247B | 20 V nominal, ±5 %, but 225 Ω rdif and 100 nA IR at VR = 15 V - lower leakage but significantly higher impedance | Superior leakage performance suits ultra-low-power designs, but poor regulation stability limits use in precision feedback paths | Prefer for energy-harvesting sensors; avoid in closed-loop power supply control where regulation error <0.5 % is required |
Compared with BZX84-C20 and MMSZ5247B, PZU84-C20R delivers optimal balance of low leakage (0.05 μA), moderate impedance (100 Ω), and hard breakdown - making it uniquely suitable for industrial power supplies requiring both long-term reliability and tight regulation under variable loads.
Availability
PZU84-C20R is available at Aetrix Electronics and suitable for industrial power supply feedback, automotive body control module reference, IoT sensor node voltage clamp, and medical instrument overvoltage protection requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for PZU84-C20R 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, headquartered in Nijmegen, Netherlands, with manufacturing in Asia and Europe.
The PZU84 series belongs to Nexperia's general-purpose Zener regulator portfolio, engineered specifically for cost-effective, space-constrained voltage reference and clamping in consumer, industrial, and automotive electronics - emphasizing robustness, tight tolerances, and SMT manufacturability.
FAQ
What is the maximum non-repetitive peak reverse power dissipation for PZU84-C20R?
The PZU84-C20R supports 40 W non-repetitive peak reverse power dissipation at tp = 100 μs square wave pulse with Tj = 25 °C prior to surge. This rating enables robust transient suppression in 12 V/24 V automotive and industrial systems exposed to ISO 7637-2 pulses or ESD events, provided PCB copper area meets Nexperia's SOT23 thermal guidelines.
How does the temperature coefficient affect regulation accuracy over −40 °C to +125 °C?
At IZ = 5 mA, PZU84-C20R exhibits +14.4 mV/K temperature coefficient, resulting in approximately ±1.15 V drift across −40 °C to +125 °C. For applications demanding <1 % total error, designers must either limit operating temperature range or implement compensation circuitry - unlike lower-voltage Zeners with near-zero TC.
Can Pin 2 be used as a thermal pad or grounded for improved heat dissipation?
No - Pin 2 is explicitly marked "not connected" in the official Nexperia datasheet and internal die structure. Connecting it to ground, VCC, or a thermal pad risks shorting internal junctions or inducing parasitic coupling. Thermal management must rely solely on Pins 1 (anode) and 3 (cathode), with cathode serving as the primary heat path to PCB copper.
Is PZU84-C20R qualified for automotive applications per AEC-Q200?
No - the PZU84-C20R is not AEC-Q200 qualified. Nexperia explicitly states in its legal disclaimers that non-automotive qualified products are unsuitable for automotive use. For automotive body electronics, designers must select AEC-Q200-compliant alternatives such as the PZU12-C20R-Q or equivalent qualified Zener series.
PZU84-C20R 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):
- 20 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 15 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-C20R FAQ
1.How can I place an order for PZU84-C20R through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU84-C20R 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-C20R reliable?
The price and inventory of PZU84-C20R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU84-C20R is usually 5 days.
3.What payment methods are accepted for PZU84-C20R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU84-C20R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU84-C20R?
PZU84-C20R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU84-C20R 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-C20R?
For technical support, including PZU84-C20R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU84-C20R requirements.
6.How does Aetrix verify that PZU84-C20R is sourced from the original manufacturer or authorized distributors?
All PZU84-C20R 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-C20R meets industry standards.
7.What is the process for return or replacement of PZU84-C20R?
All PZU84-C20R units undergo pre-shipment inspection (PSI). If there is an issue with PZU84-C20R, 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-C20R part is unused and in its original packaging.
Return procedure for PZU84-C20R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PZU84-C20R Tags
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MMSZ5231B-7-F
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BZX84C3V3LT1G
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MM5Z5V1ST1G
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