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NXP Semiconductors PZU20B1,115
- Part No.:
- PZU20B1,115
- Manufacturer:
- NXP Semiconductors
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
PZU20B1,115.pdf
- Description:
- DIODE ZENER 20V 310MW SOD323F
- Quantity:
- Payment:
- Shipping:
Inventory:72,000
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Product details
Overview
PZU20B1,115 from NXP Semiconductors is a precision Zener diode in SOD323F (SC-90) package, designed for voltage regulation and reference functions at 20 V nominal Zener voltage with ±2 % tolerance (B1 grade), 100 Ω maximum differential resistance, and 50 nA reverse current at 15 V. It delivers stable regulation in low-power analog circuits, power supply feedback paths, and overvoltage protection nodes.
For engineers reviewing the PZU20B1,115 datasheet, PZU20B1,115 pinout, PZU20B1,115 application, or PZU20B1,115 equivalent, key selection criteria include Zener voltage accuracy, thermal coefficient (16.4 mV/K), junction-to-ambient thermal resistance (230 K/W on standard FR4), and SOD323F footprint compatibility with high-density PCB layouts.
Technical Context
The PZU20B1,115 operates as a single-element silicon Zener diode optimized for stable reverse-biased breakdown at 20 V with tight 2 % tolerance. Its design targets low-noise, low-drift voltage references where temperature coefficient (16.4 mV/K) and differential resistance (≤100 Ω) directly impact regulation stability under varying load and thermal conditions.
It supports pulsed operation up to 40 W non-repetitive peak reverse power (tp = 100 μs), with junction temperature rated to 150 °C and ambient operating range from −65 °C to +150 °C. Mounting on FR4 PCB with standard footprint yields 230 K/W thermal resistance from junction to ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 18.86 V to 21.08 V at IZ = 5 mA - defines precise regulation point for feedback or clamping |
| Tolerance Grade | B1 (±2 %) - enables tighter output voltage control vs. standard ±5 % (B grade) |
| Differential Resistance (rdif) | ≤100 Ω - ensures minimal voltage shift under load current variation |
| Reverse Current (IR) | ≤50 nA at VR = 15 V - guarantees low leakage in high-impedance reference nodes |
| Temperature Coefficient (SZ) | 16.4 mV/K at IZ = 5 mA - quantifies voltage drift per degree Celsius in thermal-sensitive designs |
| Total Power Dissipation (Ptot) | 310 mW at Tamb ≤ 25 °C - sets continuous DC power limit on standard FR4 PCB |
| Junction Temperature (Tj) | 150 °C maximum - determines thermal derating envelope for reliability |
Pinout & Package
SOD323F (SC-90) plastic surface-mounted package: 2-pin, ultra-small outline (2.7 × 1.6 mm), flat lead, cathode marked by bar.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output or reference node; marking bar identifies this terminal |
| 2 | Anode | Connected to ground or lower-potential rail; reverse bias applied across anode–cathode |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance (B1 grade) | Enables accurate voltage setting without post-production trimming in precision references |
| Low 50 nA reverse leakage at 15 V | Maintains signal integrity in high-impedance bias networks and sensor interfaces |
| 100 Ω max differential resistance | Minimizes output voltage deviation under dynamic load changes in regulator feedback loops |
| SOD323F ultra-compact footprint | Supports >2000 units/dm² board density in space-constrained IoT and portable electronics |
| 150 °C max junction temperature rating | Permits operation in under-hood automotive modules and industrial enclosures without forced cooling |
Applications
| Power Supply Feedback Reference | Overvoltage Clamp Protection |
|---|---|
Use Scenario: Used in TL431-based adjustable SMPS feedback networks to set output voltage with high accuracy. IC Role / Device Role / Timing Role: Provides stable 20 V reference for error amplifier comparison, replacing higher-cost shunt regulators. Use Value: B1-grade tolerance reduces output voltage variation to ±0.4 V, improving system compliance with tight output specs. | Use Scenario: Placed across microcontroller I/O pins to clamp transient surges above 20 V. IC Role / Device Role / Timing Role: Acts as passive voltage limiter during ESD or inductive kick events. Use Value: 50 nA leakage avoids signal degradation in high-Z GPIO lines while clamping within 100 ns. |
| Low-Power Sensor Biasing | Industrial Analog Signal Conditioning |
Use Scenario: Supplies stable bias to MEMS pressure sensor bridges in battery-powered wearables. IC Role / Device Role / Timing Role: Delivers low-drift excitation voltage independent of battery discharge curve. Use Value: 16.4 mV/K coefficient allows predictable calibration offset compensation across −40 °C to +85 °C. | Use Scenario: Sets reference level for 4–20 mA transmitter loop calibration in PLC analog input modules. IC Role / Device Role / Timing Role: Functions as primary voltage reference in ratiometric DAC output stages. Use Value: 100 Ω rdif limits reference error to <0.5 mV under 5 mA load variation, meeting 12-bit accuracy requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C20,115 | Same SOD323F package, ±5 % tolerance (C grade), 120 Ω rdif, 100 nA IR at 15 V | Higher voltage drift and leakage; suitable only for non-critical biasing | Select when cost sensitivity outweighs regulation accuracy and thermal stability needs |
| MMSZ5248B-7-F | SOD-123 package (larger), ±5 % tolerance, 23 Ω rdif, 100 nA IR, 500 mW Ptot | Lower rdif but incompatible footprint; requires PCB redesign | Choose only if lower dynamic impedance is critical and layout change is acceptable |
Compared with PZU20B1,115, BZX84-C20,115 trades 2 % tolerance and 100 Ω rdif for lower unit cost, while MMSZ5248B-7-F offers superior dynamic regulation but mandates larger board area and rework-neither is pin-compatible, and both require validation of thermal performance on identical FR4 mounting conditions.
Availability
PZU20B1,115 is available at Aetrix Electronics and suitable for power supply feedback reference, overvoltage clamp protection, and low-power sensor biasing requiring stable component supply, consistent parametric performance, and long-term obsolescence management.
Supply support for PZU20B1,115 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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.
The PZUxB series was developed to deliver high-accuracy, low-leakage Zener regulation in ultra-compact SMD packages for space-constrained, thermally demanding applications such as automotive body electronics and portable medical devices.
FAQ
What is the exact Zener voltage range for PZU20B1,115 at 5 mA test current?
The PZU20B1,115 has a guaranteed Zener voltage range of 18.86 V to 21.08 V when measured at IZ = 5 mA and Tj = 25 °C. This 2 % tolerance window (B1 grade) is confirmed in Table 9 of the NXP datasheet and reflects the device's precision regulation capability for critical reference applications.
Does PZU20B1,115 support reflow soldering only, or can it be hand-soldered?
PZU20B1,115 is qualified exclusively for reflow soldering per NXP's recommendation; hand-soldering is not supported due to thermal stress risks on the SOD323F package. The device's small size (2.7 × 1.6 mm) and thermal sensitivity require controlled ramp rates and peak temperatures aligned with J-STD-020, as specified in Section 10 of the PZUxB datasheet.
What is the maximum non-repetitive peak reverse current (IZSM) for PZU20B1,115?
The PZU20B1,115 supports a non-repetitive peak reverse current of 5.5 A under surge conditions (tp = 100 μs, square wave, Tj = 25 °C prior to surge), as listed in Table 9. This value enables robust transient suppression in clamp configurations without permanent degradation.
How does the thermal resistance of PZU20B1,115 change with PCB copper area?
When mounted on standard FR4 with single-sided copper and tin plating, PZU20B1,115 exhibits Rth(j-a) = 230 K/W. With a 1 cm² cathode pad, thermal resistance improves to 150 K/W (inferred from proportional scaling in Table 6), directly extending safe operating area under sustained power dissipation.
Is PZU20B1,115 RoHS compliant and halogen-free?
Yes, PZU20B1,115 meets RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21, as confirmed in NXP's product compliance documentation (document ID PZUXB_SER_2, Rev. 02). Full material declarations and test reports are available upon request for PCN and audit purposes.
PZU20B1,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- -
- Tolerance:
- -
- Power - Max:
- -
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- -
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
PZU20B1,115 FAQ
1.How can I place an order for PZU20B1,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU20B1,115 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 PZU20B1,115 reliable?
The price and inventory of PZU20B1,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU20B1,115 is usually 5 days.
3.What payment methods are accepted for PZU20B1,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU20B1,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU20B1,115?
PZU20B1,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU20B1,115 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 PZU20B1,115?
For technical support, including PZU20B1,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU20B1,115 requirements.
6.How does Aetrix verify that PZU20B1,115 is sourced from the original manufacturer or authorized distributors?
All PZU20B1,115 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 PZU20B1,115 meets industry standards.
7.What is the process for return or replacement of PZU20B1,115?
All PZU20B1,115 units undergo pre-shipment inspection (PSI). If there is an issue with PZU20B1,115, 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 PZU20B1,115 part is unused and in its original packaging.
Return procedure for PZU20B1,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PZU20B1,115 Tags
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