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Nexperia USA Inc. PZU7.5B2A,115
- Part No.:
- PZU7.5B2A,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PZU7.5B2A,115.pdf
- Description:
- DIODE ZENER 7.5V 320MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:970
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Product details
Overview
PZU7.5B2A,115 from Nexperia is a precision Zener voltage regulator diode in SOD323 (SC-76) package, designed for low-power voltage reference and overvoltage protection in space-constrained circuits. It delivers a nominal 7.5 V Zener voltage with ±2 % tolerance (B2 series), 60 Ω maximum differential resistance at IZ = 5 mA, 10 nA reverse current at IZ = 0.5 mA, and 4.0 mV/K temperature coefficient - enabling stable regulation in battery-powered sensors and power supply feedback loops.
For engineers reviewing the PZU7.5B2A,115 datasheet, PZU7.5B2A,115 pinout, PZU7.5B2A,115 application, or PZU7.5B2A,115 equivalent, key selection criteria include tight voltage tolerance, low leakage at sub-mA bias, thermal stability across -55 °C to +150 °C ambient, and compatibility with reflow-soldered SOD323 footprints on FR4 PCBs.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain a stable reference voltage under varying load and temperature conditions. Its hard breakdown knee and intentional minor leakage rise optimize noise performance and switching speed in feedback networks, per Application Note AN90031.
The device exhibits a positive temperature coefficient of +4.0 mV/K at IZ = 5 mA and maintains ≤60 Ω dynamic impedance up to 5 mA, supporting accurate regulation in low-current biasing schemes such as op-amp reference inputs and microcontroller reset circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.5 V nominal, ±2 % tolerance (B2 series) - ensures precise voltage clamping within 0.15 V window at 5 mA test current |
| Differential Resistance (rdif) | ≤60 Ω at IZ = 5 mA - minimizes output voltage variation under small load changes in reference applications |
| Reverse Current (IR) | ≤10 nA at IZ = 0.5 mA - enables ultra-low quiescent current operation in battery-backed circuits |
| Temperature Coefficient (SZ) | +4.0 mV/K at IZ = 5 mA - provides predictable, linear drift for compensated reference designs |
| Total Power Dissipation (Ptot) | 320 mW at Tamb ≤ 25 °C on FR4 PCB - defines maximum continuous DC power handling in standard layout |
| Non-repetitive Peak Power (PZSM) | 40 W for tp = 100 µs square wave - supports transient surge suppression without degradation |
| Junction Temperature (Tj) | 150 °C maximum - sets thermal derating boundary for high-ambient industrial deployments |
Pinout & Package
Package: SOD323 (SC-76), surface-mount plastic package measuring 1.7 mm × 1.25 mm × 0.95 mm with 1.3 mm lead pitch and cathode-marked top-side bar.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output node; marking bar on package identifies this terminal for correct PCB orientation |
| 2 | Anode | Connected to ground or lower-potential rail; forms reverse-biased junction for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Tight voltage tolerance | ±2 % (B2 series) - reduces calibration overhead in precision analog signal chains |
| Low dynamic impedance | ≤60 Ω at 5 mA - improves regulation accuracy under dynamic load steps in LDO feedback paths |
| Optimized leakage profile | Intentional minor IR rise per AN90031 - enhances fast-switching response and broadband noise reduction |
| Thermal robustness | 150 °C max junction temperature - supports operation in automotive under-hood and industrial control environments |
| SMD compatibility | SOD323 footprint with standard reflow pad layout - enables automated assembly on high-density PCBs |
Applications
| Power Supply Feedback | Battery Voltage Monitoring |
|---|---|
Use Scenario: Stabilizing output voltage in isolated flyback or buck converter feedback loop using optocoupler-coupled TL431 alternative. IC Role / Device Role / Timing Role: Zener reference element setting error amplifier threshold; replaces higher-power alternatives where <1 mA bias is available. Use Value: Enables compact, low-cost regulation with 7.5 V setpoint and ±2 % accuracy without external trimming resistors. |
Use Scenario: Detecting low-voltage cutoff in Li-ion battery packs (3S configuration) before deep discharge. IC Role / Device Role / Timing Role: Precision voltage clamp feeding comparator input; operates continuously at <100 nA standby current. Use Value: Extends battery runtime via ultra-low leakage (≤10 nA) while maintaining 7.5 V threshold stability across -40 °C to +85 °C. |
| Microcontroller Reset Circuit | ESD-Protected Sensor Interface |
Use Scenario: Generating clean, temperature-stable reset signal for ARM Cortex-M MCUs during brown-out events. IC Role / Device Role / Timing Role: Reference voltage source for external reset IC (e.g., MAX809); biased at 5 mA for optimal rdif. Use Value: Delivers 7.5 V reference with ≤60 Ω impedance, ensuring reset assertion timing remains unaffected by supply ripple. |
Use Scenario: Clamping transient voltages on analog sensor lines (e.g., pressure transducer outputs) exposed to ESD pulses. IC Role / Device Role / Timing Role: Low-capacitance (≤500 pF) shunt protector placed directly at connector entry point. Use Value: Absorbs 40 W non-repetitive surges (100 µs) without failure, preserving signal integrity below 10 MHz bandwidth. |
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-B7V5 | Same 7.5 V ±2 % rating but SOD323 package with 400 mW Ptot; higher rdif (≤90 Ω) | Higher power dissipation margin but poorer regulation accuracy at low currents | Select when thermal headroom >320 mW is required and dynamic impedance <60 Ω is not critical |
| MMSZ5236B | SOD123 package (larger); 7.5 V ±5 % (B grade); rdif ≤ 15 Ω but higher IR (≤1 µA) | Lower impedance benefits high-current references but 100× higher leakage limits battery use | Select for cost-sensitive, non-battery applications needing tighter rdif and larger solder joint reliability |
Compared with BZX384-B7V5, PZU7.5B2A,115 offers superior low-current regulation (60 Ω vs. 90 Ω) and 100× lower leakage - critical for energy harvesting systems. Against MMSZ5236B, it trades 15 Ω impedance for 100× lower IR and smaller footprint, favoring space-constrained portable designs.
Availability
PZU7.5B2A,115 is available at Aetrix Electronics and suitable for voltage reference design, battery monitoring, and ESD-protected analog interfaces requiring stable component supply with guaranteed long-term continuity.
Supply support for PZU7.5B2A,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 discrete and logic devices, serving automotive, industrial, and consumer markets with ISO/TS 16949-certified manufacturing.
PZUxBA series belongs to Nexperia's general-purpose Zener regulator portfolio, engineered specifically for compact, low-leakage voltage referencing in modern SMT-based power management and signal conditioning circuits.
FAQ
What is the maximum continuous reverse current for PZU7.5B2A,115?
The device has no specified maximum continuous reverse current; instead, its safe operating area is defined by total power dissipation (320 mW at 25 °C ambient on FR4 PCB). At 7.5 V, this corresponds to ~42.7 mA average Zener current before thermal derating applies. Exceeding this requires board-level thermal analysis per Table 6's Rth(j-a) = 390 K/W.
How does the B2 tolerance series differ from B1 or B3 in the PZUxBA family?
B2 denotes ±2 % tolerance at IZ = 5 mA, positioned between B1 (tighter ±2 % with tighter min/max bounds) and B3 (same ±2 % but wider distribution for cost-sensitive volume use). For PZU7.5B2A,115, the actual VZ range is 7.36 V to 7.64 V - verified per Table 8's "B2" column for 7.5 V nominal.
Can PZU7.5B2A,115 be used in place of a 7.5 V TL431 shunt regulator?
No - TL431 is an active adjustable shunt regulator with 2.5 V reference and gain stage; PZU7.5B2A,115 is a passive two-terminal Zener. It can replace TL431 only in fixed-voltage, low-accuracy applications where 7.5 V is required without feedback adjustment, and where bias current is limited to <5 mA.
What is the significance of the "intentional minor rise of leakage current" noted in the datasheet?
This design feature, detailed in Application Note AN90031, slightly increases reverse current near breakdown to improve transient response and reduce high-frequency noise - making PZU7.5B2A,115 preferable over standard Zeners in switching power supply feedback paths where stability and EMI performance matter.
PZU7.5B2A,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):
- 7.5 V
- Tolerance:
- ±2%
- Power - Max:
- 320 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 4 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
PZU7.5B2A,115 FAQ
1.How can I place an order for PZU7.5B2A,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU7.5B2A,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 PZU7.5B2A,115 reliable?
The price and inventory of PZU7.5B2A,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU7.5B2A,115 is usually 5 days.
3.What payment methods are accepted for PZU7.5B2A,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU7.5B2A,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU7.5B2A,115?
PZU7.5B2A,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU7.5B2A,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 PZU7.5B2A,115?
For technical support, including PZU7.5B2A,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU7.5B2A,115 requirements.
6.How does Aetrix verify that PZU7.5B2A,115 is sourced from the original manufacturer or authorized distributors?
All PZU7.5B2A,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 PZU7.5B2A,115 meets industry standards.
7.What is the process for return or replacement of PZU7.5B2A,115?
All PZU7.5B2A,115 units undergo pre-shipment inspection (PSI). If there is an issue with PZU7.5B2A,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 PZU7.5B2A,115 part is unused and in its original packaging.
Return procedure for PZU7.5B2A,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PZU7.5B2A,115 Tags
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