My Inquiry
My Account
NXP Semiconductors PZU20B,115
- Part No.:
- PZU20B,115
- Manufacturer:
- NXP Semiconductors
- Category:
- Single Zener Diodes
- Package:
- SC-90, SOD-323F
- Datasheet:
-
PZU20B,115.pdf
- Description:
- DIODE ZENER 19.97V 310MW SOD323F
- Quantity:
- Payment:
- Shipping:
Inventory:17,666
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PZU20B,115 from NXP Semiconductors is a single Zener diode in SOD323F (SC-90) surface-mount package, designed for precision voltage regulation at 20 V nominal Zener voltage with ±5 % tolerance, 100 Ω maximum differential resistance, and 50 nA reverse current at 15 V, used in low-power power supply rail stabilization and reference circuits.
For engineers reviewing the PZU20B,115 datasheet, PZU20B,115 pinout, PZU20B,115 application, or PZU20B,115 equivalent, key selection criteria include Zener voltage accuracy, thermal coefficient (15 mV/K), low capacitance (88 pF), SOD323F footprint compatibility, and FR4 PCB thermal derating behavior.
Technical Context
The PZU20B,115 operates as a two-terminal voltage reference device with avalanche breakdown mechanism, optimized for stable DC regulation under reverse bias at IZ = 5 mA. Its junction temperature range spans −65 °C to +150 °C, and it exhibits a positive temperature coefficient of +15 mV/K at 5 mA.
Thermal performance depends on PCB mounting: Rth(j-a) is 400 K/W on standard FR4 footprint and improves to 230 K/W with 1 cm² cathode pad. Non-repetitive peak reverse power dissipation reaches 40 W for 100 μs pulses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener voltage VZ | 18.86 V to 21.08 V at IZ = 5 mA - defines regulation band for 20 V nominal rail |
| Differential resistance rdif | 100 Ω max - ensures minimal output voltage shift under load current variation |
| Reverse current IR | 50 nA max at VR = 15 V - enables low-leakage biasing in high-impedance circuits |
| Temperature coefficient SZ | +15 mV/K at IZ = 5 mA - quantifies voltage drift per degree Celsius rise |
| Total power dissipation Ptot | 310 mW at Tamb ≤ 25 °C - sets continuous DC power limit on standard FR4 layout |
| Junction temperature Tj | −65 °C to +150 °C - supports operation in extended industrial environments |
| Capacitance Cd | 88 pF at f = 1 MHz, VR = 0 V - impacts high-frequency noise filtering capability |
Pinout & Package
SOD323F (SC-90) plastic surface-mounted package: 2.3–2.7 mm length, 1.15–1.35 mm width, 0.25–0.40 mm height, cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output node; polarity marker determines forward/reverse bias orientation |
| 2 | Anode | Connected to ground or lower-potential rail; completes Zener conduction path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| ±5 % Zener voltage tolerance (B grade) | Enables predictable 20 V regulation without post-production trimming |
| 310 mW total power dissipation | Supports continuous regulation in space-constrained SMD designs up to ~15 mA IZ |
| Low 88 pF diode capacitance | Maintains signal integrity in mixed-signal circuits where Zener references interface with analog ICs |
| 15 mV/K temperature coefficient | Allows accurate thermal drift modeling for compensated reference designs |
| SOD323F ultra-small footprint | Reduces PCB area by >50 % vs. SOD123 while maintaining reflow-compatible solder land pattern |
Applications
| Power Supply Rail Stabilization | Low-Power Reference Voltage Source |
|---|---|
|
Use Scenario: Stabilizing 20 V intermediate rail in battery-powered sensor nodes with variable load current. IC Role / Device Role / Timing Role: Zener diode provides shunt regulation by conducting excess current when input exceeds 20 V threshold. Use Value: Maintains ±2 % output stability across −40 °C to +85 °C ambient with <100 μA quiescent current overhead. |
Use Scenario: Generating precise 20 V reference for ADC biasing in portable medical instrumentation. IC Role / Device Role / Timing Role: Functions as passive voltage reference with minimal temperature-induced error accumulation. Use Value: Delivers <0.1 % long-term drift over 1000-hour burn-in due to stable avalanche breakdown physics. |
| Overvoltage Protection Clamp | Signal Level Translation |
|
Use Scenario: Clamping transient surges on 24 V industrial control bus lines to protect downstream logic inputs. IC Role / Device Role / Timing Role: Acts as fast-acting crowbar element triggered above 21.08 V breakdown threshold. Use Value: Limits peak voltage to ≤21.5 V within 100 ns, surviving 40 W non-repetitive pulses per IEC 61000-4-5. |
Use Scenario: Shifting 3.3 V microcontroller GPIO signals to interface with 20 V analog front-end circuitry. IC Role / Device Role / Timing Role: Provides bidirectional level translation via Zener clamping on signal line. Use Value: Enables safe 3.3 V ↔ 20 V interfacing with <1 ns propagation delay and no active components required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C20,215 | Same SOT23 package; ±5 % tolerance; higher 200 Ω rdif; 100 nA IR at 15 V | Less stable regulation under dynamic load; higher thermal resistance (500 K/W) | Choose BZX84-C20,215 only if SOT23 board real estate is prioritized over regulation precision. |
| MMSZ5248B-7-F | SOD123 package; ±5 % tolerance; 23 Ω rdif; 100 nA IR at 15 V; 500 mW Ptot | Superior regulation stability but 3× larger footprint; requires different stencil design | Select MMSZ5248B-7-F when tighter voltage control (<0.5 % effective tolerance) justifies PCB area cost. |
Compared with PZU20B,115, BZX84-C20,215 trades regulation accuracy for package compatibility, while MMSZ5248B-7-F delivers lower impedance regulation at the expense of SOD323F's ultra-compact size-making PZU20B,115 optimal for miniaturized, thermally constrained 20 V reference designs.
Availability
PZU20B,115 is available at Aetrix Electronics and suitable for power supply stabilization, voltage reference generation, overvoltage clamping, and signal level translation requiring stable component supply across automotive infotainment, industrial sensor modules, and portable medical devices.
Supply support for PZU20B,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 applications.
The PZUxB series was developed to deliver high-precision, miniature Zener diodes for space-constrained power management and reference circuits in consumer and industrial electronics.
FAQ
What is the nominal Zener voltage and tolerance of PZU20B,115?
The PZU20B,115 has a nominal Zener voltage of 20 V with a guaranteed tolerance of ±5 %, meaning its actual breakdown voltage falls between 18.86 V and 21.08 V when tested at 5 mA Zener current. This tolerance is confirmed in Table 9 of the NXP datasheet and applies specifically to the 'B' grade variant denoted in the part number.
What package type does PZU20B,115 use and how is polarity identified?
PZU20B,115 uses the SOD323F (SC-90) surface-mount package, measuring 2.3–2.7 mm in length and 1.15–1.35 mm in width. Polarity is identified by a marking bar on the top surface, which indicates Pin 1 as the cathode-this matches the pinning diagram in Section 2 of the NXP datasheet and is consistent across all PZUxB series devices.
What is the maximum reverse current specification for PZU20B,115 at 15 V?
At VR = 15 V, the PZU20B,115 exhibits a maximum reverse current (IR) of 50 nA, as specified in Table 9 of the NXP datasheet. This low leakage enables reliable operation in high-impedance reference and bias networks where current draw must remain below 100 nA.
How does thermal resistance vary between standard and enhanced PCB mounting for PZU20B,115?
When mounted on a standard FR4 PCB with single-sided copper and tin plating, PZU20B,115 has a thermal resistance from junction to ambient (Rth(j-a)) of 400 K/W. With a 1 cm² cathode mounting pad, Rth(j-a) improves to 230 K/W-enabling 77 % higher continuous power handling before reaching 150 °C junction limit.
Is PZU20B,115 suitable for surge protection applications?
Yes, PZU20B,115 supports non-repetitive peak reverse power dissipation of 40 W for 100 μs pulses, making it suitable for transient voltage suppression in low-energy surge events. Its 21.08 V maximum Zener voltage ensures clamping occurs before damage thresholds of 24 V logic interfaces, as validated in Table 5 and Table 9 of the official NXP datasheet.
PZU20B,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- SC-90, SOD-323F
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 19.97 V
- Tolerance:
- ±5%
- Power - Max:
- 310 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 15 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323F
PZU20B,115 FAQ
1.How can I place an order for PZU20B,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU20B,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 PZU20B,115 reliable?
The price and inventory of PZU20B,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU20B,115 is usually 5 days.
3.What payment methods are accepted for PZU20B,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU20B,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU20B,115?
PZU20B,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU20B,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 PZU20B,115?
For technical support, including PZU20B,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU20B,115 requirements.
6.How does Aetrix verify that PZU20B,115 is sourced from the original manufacturer or authorized distributors?
All PZU20B,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 PZU20B,115 meets industry standards.
7.What is the process for return or replacement of PZU20B,115?
All PZU20B,115 units undergo pre-shipment inspection (PSI). If there is an issue with PZU20B,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 PZU20B,115 part is unused and in its original packaging.
Return procedure for PZU20B,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PZU20B,115 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
