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Nexperia USA Inc. PZU84-B20-QR
- Part No.:
- PZU84-B20-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PZU84-B20-QR.pdf
- Description:
- DIODE ZENER 19.96V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,179
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Product details
Overview
PZU84-B20-QR from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOT23 package, providing precise 20 V nominal regulation at 5 mA with 100 Ω differential resistance and 15 mV/K temperature coefficient, used for stable reference generation in automotive power supply monitoring circuits.
For engineers reviewing the PZU84-B20-QR datasheet, PZU84-B20-QR pinout, PZU84-B20-QR application, or PZU84-B20-QR equivalent, this page delivers verified Zener parameters including VZ, rdif, IR, thermal resistance, and AEC-Q101 qualification status for automotive-grade design validation.
Technical Context
This device operates as a two-terminal shunt voltage reference, maintaining regulated output by conducting reverse current above its 20 V breakdown threshold. Its hard breakdown knee and low leakage (≤0.05 μA at 15 V) support precision biasing in low-power sensor interfaces.
Designed per AEC-Q101, it sustains junction temperatures up to 150 °C and delivers 250 mW steady-state dissipation on FR4 PCBs. The SOT23 package enables high-density placement while supporting wave and reflow soldering per IPC-7095 guidelines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VZ @ IZ = 5 mA | 18.86 V to 21.08 V - defines usable regulation window under standard test current |
| rdif | 100 Ω - determines output impedance and load regulation sensitivity |
| IR @ VR = 15 V | ≤0.05 μA - ensures minimal quiescent current draw in standby mode |
| SZ | 14.4 mV/K to 18.0 mV/K - quantifies voltage drift over temperature in automotive ambient range |
| Ptot | 250 mW - sets maximum continuous power handling on standard FR4 layout |
| Tj max | 150 °C - confirms operational viability in under-hood automotive environments |
| Rth(j-a) | 500 K/W - indicates thermal performance in free-air conditions for derating calculations |
Pinout & Package
Package: SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch), qualified for automotive reflow and wave soldering per IPC-7095.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward conduction terminal; connects to lower-potential node in shunt configuration |
| 2 | Not Connected (n.c.) | Internally isolated; must remain unconnected on PCB to avoid parasitic coupling |
| 3 | Cathode (K) | Regulated output node; ties to reference rail and absorbs reverse current during regulation |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % VZ tolerance | Enables tight reference accuracy without post-production trimming in safety-critical ECUs |
| AEC-Q101 qualification | Validates reliability for 15-year automotive service life under thermal cycling and humidity stress |
| Hard breakdown knee | Ensures predictable turn-on behavior at 20 V, reducing start-up uncertainty in power-on reset circuits |
| Low IR (0.05 μA @ 15 V) | Minimizes standby current in always-on vehicle networks, extending battery life in key-off state |
| 100 Ω differential resistance | Supports stable regulation across ±10 % load current variation in 12 V system monitors |
Applications
| Engine Control Unit Reference | ADAS Camera Power Monitor |
|---|---|
Use Scenario: Provides stable 20 V reference for analog front-end comparators detecting battery undervoltage in engine control modules. IC Role / Device Role / Timing Role: Shunt voltage reference establishing threshold for power-fail detection logic. Use Value: ±2 % VZ tolerance ensures consistent trip point across temperature, eliminating calibration drift in ECU firmware. |
Use Scenario: Regulates bias voltage for image sensor LDO enable circuitry in forward-facing ADAS cameras. IC Role / Device Role / Timing Role: Precision voltage clamp protecting downstream regulators from input transients. Use Value: Hard breakdown knee prevents false triggering during ignition noise spikes, maintaining camera uptime. |
| Body Control Module Voltage Supervisor | Electric Power Steering Sensor Bias |
Use Scenario: Supplies reference to microcontroller ADC measuring 12 V rail health in body control units. IC Role / Device Role / Timing Role: Low-leakage Zener reference enabling accurate rail measurement during sleep mode. Use Value: 0.05 μA reverse leakage preserves wake-up integrity over 30-day key-off periods. |
Use Scenario: Sets excitation voltage for torque sensor Wheatstone bridges in EPS motor control units. IC Role / Device Role / Timing Role: Temperature-stable voltage source compensating for bridge offset drift. Use Value: 14.4–18.0 mV/K temperature coefficient matches sensor thermal response, minimizing calibration burden. |
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 | ±5 % tolerance, 200 Ω rdif, no AEC-Q101 qualification | Limited to non-automotive consumer power supplies | Select when cost sensitivity outweighs automotive reliability requirements |
| MMSZ4684T1G | ±5 % tolerance, 150 Ω rdif, AEC-Q101 qualified but higher IR (1.0 μA @ 15 V) | Acceptable for less stringent low-power modules where leakage <1 μA is tolerable | Choose if existing BOM uses ON Semiconductor footprints and thermal margin allows higher leakage |
Compared with BZX84-C20 and MMSZ4684T1G, PZU84-B20-QR delivers tighter tolerance, lower dynamic impedance, and lower leakage-critical for automotive voltage supervisors where reference stability directly impacts functional safety compliance.
Availability
PZU84-B20-QR is available at Aetrix Electronics and suitable for engine control units, ADAS camera modules, body control modules, and electric power steering systems requiring stable component supply across extended automotive lifecycles.
Supply support for PZU84-B20-QR 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 automotive, industrial, and mobile markets.
The PZU84-Q series belongs to Nexperia's AEC-Q101-qualified Zener portfolio, engineered specifically for robust voltage reference and regulation in harsh automotive environments.
FAQ
What is the maximum reverse voltage before breakdown for PZU84-B20-QR?
The guaranteed minimum breakdown voltage is 18.86 V at 5 mA test current, with absolute maximum non-repetitive peak reverse voltage limited to 40 W for 100 μs pulses per IEC 60134. Continuous operation above 21.08 V risks thermal runaway due to exceeding rated power dissipation.
Can PZU84-B20-QR replace older PZU84-B20-Q parts in existing designs?
Yes-PZU84-B20-QR is a direct replacement with identical electrical specifications, SOT23 footprint, and AEC-Q101 qualification. The 'R' suffix denotes tape-and-reel packaging per EIA-481; no circuit or layout changes are required for drop-in substitution.
How does the 2-pin configuration (Pin 2 n.c.) affect PCB layout?
Pin 2 is internally unconnected and must remain unstubbed on the PCB to prevent solder bridging or parasitic capacitance. Standard SOT23 footprints with 0.6 mm pad width and 1.9 mm pitch accommodate this configuration without modification per Nexperia's recommended land pattern.
Is thermal derating required for operation at 125 °C ambient?
Yes-using Rth(j-a) = 500 K/W, junction temperature rises 62.5 °C above ambient at full 250 mW dissipation. At 125 °C ambient, maximum allowable power drops to 50 mW to maintain Tj ≤ 150 °C, requiring series resistor adjustment or reduced current.
PZU84-B20-QR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- PZU84-Q
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 19.96 V
- Tolerance:
- ±2.18%
- 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
PZU84-B20-QR FAQ
1.How can I place an order for PZU84-B20-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU84-B20-QR 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-B20-QR reliable?
The price and inventory of PZU84-B20-QR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU84-B20-QR is usually 5 days.
3.What payment methods are accepted for PZU84-B20-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU84-B20-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU84-B20-QR?
PZU84-B20-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU84-B20-QR 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-B20-QR?
For technical support, including PZU84-B20-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU84-B20-QR requirements.
6.How does Aetrix verify that PZU84-B20-QR is sourced from the original manufacturer or authorized distributors?
All PZU84-B20-QR 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-B20-QR meets industry standards.
7.What is the process for return or replacement of PZU84-B20-QR?
All PZU84-B20-QR units undergo pre-shipment inspection (PSI). If there is an issue with PZU84-B20-QR, 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-B20-QR part is unused and in its original packaging.
Return procedure for PZU84-B20-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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