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Nexperia USA Inc. PZU24B3A,115
- Part No.:
- PZU24B3A,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PZU24B3A,115.pdf
- Description:
- DIODE ZENER 24V 320MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:5,934
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Product details
Overview
PZU24B3A,115 from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 24 V nominal working voltage, 320 mW total power dissipation at 25 °C ambient, and 19 A non-repetitive peak reverse current (tp = 100 µs). It delivers low differential resistance (120 Ω max at IZ = 5 mA), tight temperature coefficient (±1.3 mV/K), and is used for precision voltage reference and overvoltage protection in low-power analog circuits.
For engineers reviewing the PZU24B3A,115 datasheet, PZU24B3A,115 pinout, PZU24B3A,115 application, or PZU24B3A,115 equivalent, key selection criteria include Zener voltage tolerance (±2 %), thermal resistance (255 K/W junction-to-solder-point), reverse leakage (≤30 nA at 0.5 mA), differential impedance stability across operating current, and SOD323 footprint compatibility with high-density PCB layouts.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable DC voltage under varying load and input conditions. Its hard breakdown knee and low dynamic impedance ensure minimal voltage deviation across 0.5–5 mA Zener current range, supporting accurate regulation in feedback networks and reference buffers.
The device features intentional minor leakage rise optimized for fast switching and noise reduction per AN90031, distinguishing it from tighter-leakage variants like PZU5.1BA–10BA. Its ±2 % B3 tolerance grade targets applications requiring higher precision than standard ±5 % Zeners without demanding ultra-low-noise performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 24 V nominal, min 24.54 V / max 25.57 V at IZ = 5 mA - defines regulated output level with ±2 % tolerance for stable reference generation |
| Differential Resistance (rdif) | ≤120 Ω at IZ = 5 mA - ensures minimal output voltage shift under load current variation |
| Reverse Current (IR) | ≤30 nA at VR = 0.5 × VZ - enables low-power standby operation without excessive quiescent drain |
| Total Power Dissipation (Ptot) | 320 mW at Tamb ≤ 25 °C on FR4 PCB - sets maximum continuous DC power handling in standard layout |
| Non-repetitive Peak Reverse Current (IZSM) | 19 A at tp = 100 µs - supports transient overvoltage clamping without failure |
| Temperature Coefficient (SZ) | ±1.3 mV/K - limits drift of regulated voltage over industrial temperature range (−55 °C to +150 °C) |
| Junction-to-Solder-Point Thermal Resistance (Rth(j-sp)) | 55 K/W - enables efficient heat transfer from die to PCB copper pad for reliability in sustained operation |
Pinout & Package
SOD323 (SC-76) plastic surface-mount package: 1.7 mm × 1.25 mm × 0.95 mm body, 1.3 mm lead pitch, cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output node; marking bar identifies this terminal for correct PCB orientation and polarity-sensitive placement |
| 2 | Anode | Connected to ground or lower-potential rail; completes reverse-bias path enabling Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance (B3 series) | Enables tighter regulation accuracy than ±5 % parts, reducing need for post-regulation trimming in mid-precision analog supplies |
| Optimized leakage for fast switching | Intentional minor IR rise improves transient response and reduces broadband noise versus ultra-low-leakage Zeners |
| Low differential impedance at low currents | 120 Ω max at 5 mA allows stable regulation even in micro-power bias networks (<100 µA quiescent) |
| SOD323 footprint compatibility | Standardized 1.3 mm pitch enables automated placement and reflow in high-density consumer and industrial PCBs |
| 150 °C maximum junction temperature | Supports operation in thermally constrained enclosures and automotive under-hood adjacent zones (non-automotive qualified) |
Applications
| Power Supply Reference | Overvoltage Protection |
|---|---|
|
Use Scenario: Providing stable 24 V reference for ADC voltage dividers and op-amp biasing in industrial sensor signal conditioning modules. IC Role / Device Role / Timing Role: Zener diode functions as shunt voltage reference, absorbing excess current to hold node voltage within ±2 % across 0.5–5 mA load variation. Use Value: Enables 12-bit ADC accuracy without external trimming, leveraging 120 Ω rdif and ±1.3 mV/K temperature coefficient. |
Use Scenario: Clamping transient surges on 24 V DC bus lines in programmable logic controller (PLC) I/O modules. IC Role / Device Role / Timing Role: Acts as fast-acting shunt protector, conducting surge energy into ground when line voltage exceeds 25.57 V (VZ max). Use Value: Absorbs 19 A peak pulses (100 µs) without degradation, preventing downstream IC damage while maintaining <30 nA leakage during normal operation. |
| Low-Power Bias Network | Comparator Threshold Setting |
|
Use Scenario: Generating precise bias points for rail-to-rail op-amps in battery-powered environmental monitoring nodes. IC Role / Device Role / Timing Role: Supplies regulated 24 V reference to high-impedance divider network, drawing only 0.5 mA typical Zener current. Use Value: Achieves <0.1 % regulation error over −40 °C to +85 °C using ±2 % VZ and low thermal drift, extending battery life via minimal quiescent draw. |
Use Scenario: Setting hysteresis thresholds in window comparators for 24 V system health monitoring in telecom power shelves. IC Role / Device Role / Timing Role: Defines upper trip point in dual-Zener hysteresis circuit, where precise 24 V ±2 % tolerance ensures repeatable fault detection margins. Use Value: Eliminates need for matched resistor networks; 120 Ω rdif prevents threshold shift under comparator input bias current loading. |
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-B24,115 | Same 24 V nominal, ±2 % tolerance, but SOD323 package with 400 mW Ptot rating and higher 200 Ω rdif | Higher power margin suits intermittent surge loads; less suitable for low-current precision references due to higher impedance | Select when board-level thermal management allows higher dissipation and tighter VZ drift control is secondary to surge robustness |
| MMSZ5242B-TP | 24 V nominal, ±5 % tolerance, SOD123 package, 500 mW Ptot, 150 Ω rdif, larger footprint (3.5 mm × 1.6 mm) | Looser tolerance increases reference uncertainty; larger size eases hand-soldering but reduces layout density | Choose for cost-sensitive, non-precision applications where SOD123 assembly infrastructure exists and ±5 % regulation is acceptable |
Compared with BZX384-B24,115 and MMSZ5242B-TP, PZU24B3A,115 offers superior low-current regulation stability (120 Ω vs. ≥150 Ω) and smallest PCB footprint (SOD323), making it optimal for space-constrained, precision analog designs where ±2 % tolerance and thermal efficiency are prioritized over raw surge power headroom.
Availability
PZU24B3A,115 is available at Aetrix Electronics and suitable for industrial sensor interfaces, PLC I/O protection, battery-powered instrumentation, and telecom power supervision requiring stable component supply with traceable sourcing and lifecycle continuity.
Supply support for PZU24B3A,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 delivering high-performance, reliable discrete, logic, and MOSFET devices with focus on efficiency, miniaturization, and robustness for industrial and consumer electronics.
PZUxBA series belongs to Nexperia's general-purpose Zener regulator portfolio, designed specifically for compact, high-accuracy voltage reference and clamping in space-constrained, low-to-moderate power applications.
FAQ
What is the maximum continuous Zener current for PZU24B3A,115 at 70 °C ambient?
At 70 °C ambient, derated power dissipation is approximately 220 mW (based on Rth(j-a) = 255 K/W and Tj(max) = 150 °C), yielding a maximum continuous Zener current of ~9.2 mA (220 mW ÷ 24 V). This assumes standard FR4 PCB mounting with single-sided copper.
Does PZU24B3A,115 support reflow soldering per JEDEC J-STD-020?
Yes - the SOD323 package is qualified for lead-free reflow per JEDEC J-STD-020D. Recommended profile uses peak temperature of 260 °C for ≤10 seconds, with ramp-up rate ≤3 °C/s and cooling rate ≤6 °C/s. Figure 10 in the datasheet specifies the exact solder land pattern.
How does the B3 tolerance grade differ electrically from B1 or B2 in the PZUxBA series?
All B1/B2/B3 grades specify ±2 % tolerance, but B3 denotes tighter binning within that band: PZU24B3A guarantees VZ between 24.54 V and 25.57 V (24 V × 1.0225 to 1.0655), whereas B1/B2 may span wider sub-ranges within the same overall ±2 % envelope per Table 8.
Can PZU24B3A,115 be used in place of a 24 V Zener with ±5 % tolerance?
Yes - it is a direct functional upgrade: same package, voltage rating, and pinout, but with improved tolerance (±2 % vs. ±5 %), lower differential resistance (120 Ω vs. typically >200 Ω), and optimized leakage for noise-sensitive applications. No layout or schematic changes are required.
PZU24B3A,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 24 V
- Tolerance:
- ±2%
- Power - Max:
- 320 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 19 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
PZU24B3A,115 FAQ
1.How can I place an order for PZU24B3A,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU24B3A,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 PZU24B3A,115 reliable?
The price and inventory of PZU24B3A,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU24B3A,115 is usually 5 days.
3.What payment methods are accepted for PZU24B3A,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU24B3A,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU24B3A,115?
PZU24B3A,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU24B3A,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 PZU24B3A,115?
For technical support, including PZU24B3A,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU24B3A,115 requirements.
6.How does Aetrix verify that PZU24B3A,115 is sourced from the original manufacturer or authorized distributors?
All PZU24B3A,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 PZU24B3A,115 meets industry standards.
7.What is the process for return or replacement of PZU24B3A,115?
All PZU24B3A,115 units undergo pre-shipment inspection (PSI). If there is an issue with PZU24B3A,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 PZU24B3A,115 part is unused and in its original packaging.
Return procedure for PZU24B3A,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PZU24B3A,115 Tags
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