My Inquiry
My Account
Nexperia USA Inc. PZU20B2A,115
- Part No.:
- PZU20B2A,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PZU20B2A,115.pdf
- Description:
- DIODE ZENER 20V 320MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PZU20B2A,115 from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 20 V nominal working voltage, 320 mW total power dissipation at 25 °C ambient, and 40 W non-repetitive peak reverse power. It delivers low dynamic impedance (100 Ω max at IZ = 5 mA), 20 nA reverse current at IZ = 0.5 mA, and optimized leakage for fast switching in precision reference circuits.
For engineers reviewing the PZU20B2A,115 datasheet, PZU20B2A,115 pinout, PZU20B2A,115 application, or PZU20B2A,115 equivalent, this device serves as a compact, thermally efficient voltage reference in low-power analog monitoring, LDO feedback paths, and overvoltage clamp stages where tight voltage tolerance and stable temperature coefficient (±1.5 mV/K typical) are required.
Technical Context
This Zener diode operates in reverse breakdown mode with hard knee characteristics and intentional minor leakage rise to reduce noise and improve transient response-per AN90031. Its differential resistance remains ≤100 Ω at 5 mA, enabling stable regulation under light-load conditions.
Thermal design is constrained by Rth(j-a) = 390 K/W (free air) and Rth(j-sp) = 55 K/W (solder point), requiring careful PCB copper layout for thermal management. Junction temperature must not exceed 150 °C, and ambient operating range spans −55 °C to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 20 V ±2 % (B2 tolerance series); ensures precise DC reference within 400 mV deviation at 5 mA test current |
| Total Power Dissipation | 320 mW at Tamb ≤ 25 °C on FR4 PCB; defines maximum continuous steady-state power handling |
| Non-repetitive Peak Reverse Power | 40 W for tp = 100 µs square wave; supports short-duration surge clamping without failure |
| Differential Resistance | ≤100 Ω at IZ = 5 mA; maintains low output impedance for stable regulation under load variation |
| Reverse Current | 20 nA at IZ = 0.5 mA; enables ultra-low quiescent current operation in battery-powered references |
| Temperature Coefficient | +1.5 mV/K typical; provides predictable, linear drift for compensated reference designs |
| Package | SOD323 (SC-76); 1.7 mm × 1.25 mm × 0.95 mm surface-mount footprint compatible with high-density PCB assembly |
Pinout & Package
SOD323 (SC-76) plastic surface-mount package with 2 leads, 1.3 mm pitch, and cathode marked by a bar on the body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output node; marking bar identifies this terminal; reverse-biased during regulation |
| 2 | Anode | Connected to ground or lower-potential rail; completes reverse-bias path for Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance (B2 series) | Enables tighter regulation accuracy than ±5 % parts, reducing need for post-calibration in precision analog systems |
| Optimized leakage for fast switching | Intentional minor IR increase improves transient response and reduces broadband noise per AN90031 |
| Low dynamic impedance at low currents | ≤100 Ω at 5 mA supports stable reference performance even in micro-power applications |
| Hard breakdown knee | Sharp turn-on characteristic ensures predictable conduction onset and minimal regulation hysteresis |
| FR4-compatible thermal profile | Rth(j-sp) = 55 K/W allows effective heat transfer via cathode solder pad, supporting reliable operation up to 150 °C junction |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Providing stable 20 V reference for adjustable LDO feedback divider in industrial sensor signal conditioning. IC Role / Device Role / Timing Role: Zener diode acts as shunt voltage reference, setting output voltage via resistor divider network. Use Value: ±2 % tolerance and +1.5 mV/K TC ensure <±1.2 % total error across −40 °C to +85 °C, eliminating need for trimming. |
Use Scenario: Protecting ADC input from transient overvoltage events in automotive body control modules. IC Role / Device Role / Timing Role: Shunt clamp activated during >20.4 V surges, diverting excess current to ground before damage occurs. Use Value: 40 W non-repetitive peak power rating absorbs 100 µs transients without degradation, meeting ISO 7637-2 pulse 1/2a requirements. |
| Low-Power Sensor Bias | Current Source Stabilization |
Use Scenario: Biasing photodiode amplifier in portable medical pulse oximeter with coin-cell power supply. IC Role / Device Role / Timing Role: Provides regulated 20 V bias to high-impedance transimpedance stage while minimizing quiescent draw. Use Value: 20 nA reverse current at 0.5 mA ensures <1 µA total reference circuit current, extending battery life beyond 12 months. |
Use Scenario: Stabilizing base-emitter voltage of constant-current sink driving LED strings in smart lighting controls. IC Role / Device Role / Timing Role: Sets fixed voltage drop across emitter resistor to define precise LED current independent of supply variation. Use Value: ≤100 Ω dynamic impedance maintains current accuracy within ±1.5 % across 3.3–24 V input 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 |
|---|---|---|---|
| BZX384-B20,115 | Same 20 V ±2 % rating but SOD323 package with higher Rth(j-a) (450 K/W) and no AN90031 noise optimization | Lacks intentional leakage tuning; exhibits higher broadband noise in sensitive analog front-ends | Select when lowest cost is prioritized and noise performance is non-critical |
| MMSZ5248B-7-F | 20 V ±5 % (B series), SOD123 package, 500 mW Ptot, higher rdif (150 Ω) | Looser tolerance and larger footprint limit use in space-constrained, high-accuracy designs | Select only for legacy compatibility where ±5 % tolerance and board area are acceptable |
Compared with BZX384-B20,115 and MMSZ5248B-7-F, PZU20B2A,115 offers superior thermal efficiency (390 vs. 450 K/W), lower dynamic impedance (100 vs. 150 Ω), and application-specific noise reduction-making it optimal for next-generation low-noise, high-density analog systems.
Availability
PZU20B2A,115 is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable medical devices, and automotive body electronics requiring stable component supply with guaranteed long-term continuity.
Supply support for PZU20B2A,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
Nexperia is a global semiconductor expert focused on high-volume, high-reliability logic, discrete, and MOSFET solutions, headquartered in Nijmegen, Netherlands.
The PZUxBA series targets general-purpose Zener regulation in space-constrained, thermally demanding applications-designed specifically for robust performance in consumer, industrial, and automotive-qualified systems where precision, size, and reliability intersect.
FAQ
What is the maximum continuous reverse current for PZU20B2A,115 at 25 °C ambient?
The device supports up to 200 mA forward current, but as a Zener regulator, its continuous reverse current is limited by power dissipation. At 25 °C ambient on standard FR4, the maximum continuous reverse current is 16 mA (320 mW ÷ 20 V), assuming negligible forward drop. Derating applies above 25 °C per the thermal resistance curve.
Can PZU20B2A,115 be used in place of a 20 V Zener with ±5 % tolerance?
Yes-it is pin- and form-factor compatible with ±5 % variants like PZU20BA,115, but delivers tighter regulation (±2 %) and lower dynamic impedance. No circuit redesign is needed, though system-level accuracy improves due to reduced voltage spread and better temperature stability.
How does the "intentional minor rise of leakage current" affect circuit behavior?
This design feature, detailed in Application Note AN90031, slightly increases reverse current near breakdown to improve transient response and suppress high-frequency noise-without compromising regulation accuracy. It results in faster recovery after overvoltage events and lower RMS noise in reference outputs.
Is PZU20B2A,115 suitable for reflow soldering per JEDEC J-STD-020?
Yes-the SOD323 package is qualified for standard lead-free reflow profiles. The recommended footprint matches Nexperia's Fig. 10 (sod323_fr), with 0.5 mm solder land width and 0.6 mm solder resist opening. Peak temperature must not exceed 260 °C for ≤30 seconds to avoid package damage.
PZU20B2A,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 20 V
- Tolerance:
- ±2%
- Power - Max:
- 320 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:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
PZU20B2A,115 FAQ
1.How can I place an order for PZU20B2A,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU20B2A,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 PZU20B2A,115 reliable?
The price and inventory of PZU20B2A,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU20B2A,115 is usually 5 days.
3.What payment methods are accepted for PZU20B2A,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU20B2A,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU20B2A,115?
PZU20B2A,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU20B2A,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 PZU20B2A,115?
For technical support, including PZU20B2A,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU20B2A,115 requirements.
6.How does Aetrix verify that PZU20B2A,115 is sourced from the original manufacturer or authorized distributors?
All PZU20B2A,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 PZU20B2A,115 meets industry standards.
7.What is the process for return or replacement of PZU20B2A,115?
All PZU20B2A,115 units undergo pre-shipment inspection (PSI). If there is an issue with PZU20B2A,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 PZU20B2A,115 part is unused and in its original packaging.
Return procedure for PZU20B2A,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PZU20B2A,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…
