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Nexperia USA Inc. PZU7.5B3A,115
- Part No.:
- PZU7.5B3A,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PZU7.5B3A,115.pdf
- Description:
- DIODE ZENER 7.5V 320MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:2,339
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Product details
Overview
PZU7.5B3A,115 from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 7.5 V nominal working voltage at 5 mA, with 60 Ω max differential resistance, 10 nA reverse current at 0.5 mA, and 4.0 mV/K temperature coefficient. It delivers stable reference voltage in low-power analog circuits, power supply feedback loops, and overvoltage protection stages.
For engineers reviewing the PZU7.5B3A,115 datasheet, PZU7.5B3A,115 pinout, PZU7.5B3A,115 application, or PZU7.5B3A,115 equivalent, key selection criteria include tight voltage tolerance, low dynamic impedance at regulation current, thermal stability across operating temperature, and compatibility with high-density SMT layouts using standard FR4 PCB footprints.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain a precise DC reference voltage under varying load and temperature conditions. Its 7.5 V nominal Zener voltage is specified at IZ = 5 mA with ±2 % tolerance (B3 series), and exhibits a positive temperature coefficient of +4.0 mV/K - enabling predictable drift compensation in multi-device bias networks.
The device features hard breakdown knee characteristics and intentional low leakage (10 nA at 0.5 mA), optimized for noise-sensitive applications. Thermal resistance from junction to solder point is 55 K/W, supporting reliable operation up to 150 °C junction temperature when mounted on standard tin-plated FR4 PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 7.52 V to 7.84 V at IZ = 5 mA - ensures tight regulation window for precision reference use |
| Differential Resistance rdif | ≤ 60 Ω at IZ = 5 mA - minimizes output voltage variation under load transients |
| Reverse Current IR | ≤ 10 nA at VR = 0.5 × VZ - enables ultra-low standby power in battery-backed circuits |
| Temperature Coefficient SZ | +4.0 mV/K - provides known, linear drift behavior for thermal compensation design |
| Total Power Dissipation Ptot | 320 mW at Tamb ≤ 25 °C on FR4 PCB - defines maximum continuous DC power handling |
| Non-repetitive Peak Power PZSM | 40 W for tp = 100 µs - supports transient surge clamping without damage |
| Junction Temperature Tj | −55 °C to +150 °C - qualifies for industrial and extended-temperature embedded systems |
Pinout & Package
SOD323 (SC-76) surface-mount plastic package: 1.7 mm × 1.25 mm × 0.95 mm body, 1.3 mm lead pitch, cathode marked with bar.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output node; polarity marker aligns with PCB silkscreen bar |
| 2 | Anode | Connected to ground or lower-potential rail; forms reverse-biased junction for Zener action |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance (B3 series) | Reduces calibration overhead in precision analog signal chains and voltage monitors |
| Hard breakdown knee | Enables clean, predictable turn-on behavior without soft saturation-critical for accurate threshold detection |
| Low dynamic impedance (≤60 Ω) | Maintains regulation stability under fast load steps typical in SMPS feedback paths |
| Ultra-low reverse leakage (≤10 nA) | Preserves battery life in always-on sensor nodes and low-power IoT endpoints |
| Optimized thermal resistance (Rth(j-sp) = 55 K/W) | Allows direct thermal coupling to PCB copper for passive heat dissipation without heatsinks |
Applications
| Power Supply Feedback Reference | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback or buck-boost converters via optocoupler-coupled feedback loop. IC Role / Device Role / Timing Role: Provides stable 7.5 V reference for TL431-type shunt regulators or error amplifier input. Use Value: Tight ±2 % tolerance eliminates need for post-production trimming; low rdif ensures minimal loop gain variation across line/load changes. |
Use Scenario: Protecting microcontroller I/O pins from ESD or inductive kickback in automotive body control modules. IC Role / Device Role / Timing Role: Acts as bidirectional clamp between signal line and ground, limiting voltage excursions to ±7.84 V. Use Value: 40 W non-repetitive peak power rating absorbs 100 µs surges without degradation; low leakage avoids false triggering in high-impedance sensing paths. |
| Temperature-Compensated Bias Network | Low-Power Sensor Reference |
Use Scenario: Generating stable bias currents for precision op-amp input stages in industrial process transmitters. IC Role / Device Role / Timing Role: Forms part of a matched Zener–transistor network where +4.0 mV/K TC offsets transistor VBE drift. Use Value: Known positive TC enables first-order cancellation of semiconductor temperature drift, improving long-term offset stability. |
Use Scenario: Supplying reference voltage to 12-bit ADCs in portable medical sensors powered by coin-cell batteries. IC Role / Device Role / Timing Role: Delivers low-noise, low-drift 7.5 V reference with sub-10 nA quiescent draw. Use Value: Ultra-low IR preserves battery runtime >5 years in sleep-mode operation; hard knee prevents reference collapse during wake-up transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C7V5 | ±5 % tolerance, 80 Ω rdif, 100 nA IR at 0.5×VZ | Higher voltage drift and leakage reduce accuracy in precision references | Select when cost sensitivity outweighs regulation stability requirements |
| MMSZ5235B | ±5 % tolerance, 15 Ω rdif, 100 nA IR, SOD-123 package (larger footprint) | Lower impedance improves load regulation but larger size limits high-density layouts | Choose for improved dynamic performance where board space permits |
Compared with PZU7.5B3A,115, BZX84-C7V5 trades tighter voltage control for lower cost, while MMSZ5235B offers better dynamic regulation at the expense of footprint size and tolerance-making PZU7.5B3A,115 optimal for space-constrained, precision analog designs requiring guaranteed ±2 % accuracy and ultra-low leakage.
Availability
PZU7.5B3A,115 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, portable medical instrumentation, and IoT edge sensor nodes requiring stable component supply with consistent parametric performance across production lots.
Supply support for PZU7.5B3A,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, reliability, and miniaturization.
PZUxBA series belongs to Nexperia's general-purpose Zener regulator portfolio, engineered for high-volume SMT applications demanding tight voltage tolerance, low leakage, and robust surge capability in compact SOD323 packaging.
FAQ
What is the maximum continuous reverse current this diode can handle?
The PZU7.5B3A,115 has a maximum forward current rating of 200 mA, but its continuous reverse (Zener) current is limited by power dissipation. At 25 °C ambient on standard FR4 PCB, it supports up to ~42 mA continuously (320 mW ÷ 7.5 V), derating linearly above 25 °C per its thermal resistance specification.
Does this Zener diode require a series current-limiting resistor in all applications?
Yes - a series resistor is mandatory to limit Zener current within safe operating limits. For example, with 12 V supply and 7.5 V output, a 100 Ω resistor limits worst-case current to 45 mA, staying within the 320 mW power envelope and avoiding thermal runaway.
How does the +4.0 mV/K temperature coefficient affect circuit performance?
The +4.0 mV/K coefficient means output voltage increases by ~0.3 V over a 75 °C rise (e.g., from 25 °C to 100 °C). This predictable drift enables compensation using complementary negative-TC components like transistors or thermistors in precision reference designs.
Can PZU7.5B3A,115 be used in place of older PZU7.5B2A variants?
Yes - both share identical electrical specs and SOD323 package. The B3 suffix denotes tighter ±2 % tolerance versus B2's ±2 % (same spec), with no functional or mechanical differences; PZU7.5B3A,115 is a direct replacement with identical footprint, marking, and thermal behavior.
PZU7.5B3A,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):
- 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
PZU7.5B3A,115 FAQ
1.How can I place an order for PZU7.5B3A,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU7.5B3A,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 PZU7.5B3A,115 reliable?
The price and inventory of PZU7.5B3A,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU7.5B3A,115 is usually 5 days.
3.What payment methods are accepted for PZU7.5B3A,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU7.5B3A,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU7.5B3A,115?
PZU7.5B3A,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU7.5B3A,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 PZU7.5B3A,115?
For technical support, including PZU7.5B3A,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU7.5B3A,115 requirements.
6.How does Aetrix verify that PZU7.5B3A,115 is sourced from the original manufacturer or authorized distributors?
All PZU7.5B3A,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 PZU7.5B3A,115 meets industry standards.
7.What is the process for return or replacement of PZU7.5B3A,115?
All PZU7.5B3A,115 units undergo pre-shipment inspection (PSI). If there is an issue with PZU7.5B3A,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 PZU7.5B3A,115 part is unused and in its original packaging.
Return procedure for PZU7.5B3A,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PZU7.5B3A,115 Tags
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