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NXP Semiconductors PZU3.3B1,115
- Part No.:
- PZU3.3B1,115
- Manufacturer:
- NXP Semiconductors
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
PZU3.3B1,115.pdf
- Description:
- DIODE ZENER 3.3V 310MW SOD323F
- Quantity:
- Payment:
- Shipping:
Inventory:246,000
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Product details
Overview
PZU3.3B1,115 from NXP Semiconductors is a precision Zener diode optimized for voltage regulation and reference applications in space-constrained SMD designs. It delivers a nominal Zener voltage of 3.3 V at 5 mA with ±2 % tolerance (B1 grade), 95 Ω maximum differential resistance, and 5 μA maximum reverse current at 1 V, housed in the ultra-compact SOD323F (SC-90) package.
For engineers reviewing the PZU3.3B1,115 datasheet, PZU3.3B1,115 pinout, PZU3.3B1,115 application, or PZU3.3B1,115 equivalent, key selection criteria include tight voltage tolerance, low dynamic impedance, thermal stability across −65 °C to +150 °C ambient, and compatibility with reflow soldering on FR4 PCBs using standard footprint layouts.
Technical Context
The PZU3.3B1,115 operates as a two-terminal voltage reference device, conducting in reverse breakdown to maintain stable output voltage under varying load and temperature conditions. Its Zener mechanism provides predictable regulation with a temperature coefficient of −2.4 mV/K at 5 mA, enabling predictable drift compensation in analog circuits.
Designed for surface-mount use on single-sided tin-plated FR4 PCBs, it supports total power dissipation up to 310 mW at ≤25 °C ambient (standard footprint) or 550 mW with 1 cm² cathode pad. Thermal resistance from junction to ambient is 400 K/W (free air) or 230 K/W (standard PCB mount).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.10 V to 3.35 V at IZ = 5 mA - defines precise regulation band for low-voltage reference circuits |
| Tolerance Grade | B1 (±2 %) - enables tighter system-level voltage accuracy vs. B-grade (±5 %) variants |
| Differential Resistance (rdif) | ≤95 Ω at IZ = 5 mA - ensures minimal output voltage variation under load transients |
| Reverse Current (IR) | ≤5 μA at VR = 1 V - guarantees low quiescent power loss in standby or high-impedance bias networks |
| Power Dissipation (Ptot) | 310 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling on standard PCB layout |
| Junction Temperature (Tj) | −65 °C to +150 °C - supports operation in extended industrial and automotive under-hood environments |
| Forward Voltage (VF) | ≤0.9 V at IF = 10 mA - allows reliable anode-cathode polarity verification during functional test |
Pinout & Package
The PZU3.3B1,115 is housed in the SOD323F (SC-90) plastic surface-mount package: 2.7 mm × 1.6 mm × 0.95 mm body, 0.65 mm lead pitch, cathode marked by a bar on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output node; marking bar identifies this terminal; carries reverse breakdown current |
| 2 | Anode | Connected to ground or lower-potential rail; completes reverse-biased path for Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance (B1 grade) | Reduces calibration overhead in precision analog front-ends and ADC reference buffers |
| SOD323F ultra-small footprint | Enables placement in dense routing areas where larger packages (e.g., SOD123) are impractical |
| Low 5 μA reverse leakage at 1 V | Minimizes error contribution in high-impedance voltage divider or sensor bias networks |
| −2.4 mV/K temperature coefficient | Supports predictable drift modeling for temperature-compensated reference designs |
| Reflow-solder compatible construction | Eliminates need for wave or hand-soldering; aligns with automated PCB assembly standards |
Applications
| Power Supply Rail Clamp | ADC Reference Stabilizer |
|---|---|
Use Scenario: Clamping 3.3 V logic supply against transient overvoltage in microcontroller-based peripherals. IC Role / Device Role / Timing Role: Zener diode acting as shunt regulator to divert excess current when rail exceeds 3.3 V threshold. Use Value: Prevents latch-up or damage to 3.3 V I/O pins using only 95 Ω dynamic impedance and 310 mW dissipation capability. |
Use Scenario: Providing stable reference voltage for 12-bit SAR ADC in battery-powered data loggers. IC Role / Device Role / Timing Role: Low-drift voltage reference source replacing higher-cost IC references where ±2 % accuracy suffices. Use Value: Achieves <1 LSB error at full scale via −2.4 mV/K tempco and 5 μA leakage, minimizing calibration frequency. |
| Signal Level Shifter | Overvoltage Protection Circuit |
Use Scenario: Biasing op-amp input stage to 3.3 V common-mode level in single-supply sensor interfaces. IC Role / Device Role / Timing Role: DC bias generator establishing fixed reference point for AC-coupled signal paths. Use Value: Maintains stable offset with <0.25 V deviation across −40 °C to +85 °C due to tight B1 tolerance and known tempco. |
Use Scenario: Protecting USB VBUS line from ESD-induced surges exceeding 5.5 V in portable docking stations. IC Role / Device Role / Timing Role: Fast-acting shunt clamp activated above 3.3 V, limiting peak voltage before TVS triggers. Use Value: Responds within nanoseconds to transients, leveraging low capacitance (<410 pF) and 8 A non-repetitive surge rating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B3V3,115 | Same SOD323F package, ±2 % tolerance, but higher 120 Ω rdif and −2.0 mV/K tempco | Less stable under load variation; suitable where cost is prioritized over regulation precision | Select when lower dynamic impedance is not required and legacy BZX384 footprint compatibility is needed |
| MMSZ5226BS-7-F | SOD-123 package (larger), ±5 % tolerance (B grade), 17 Ω rdif, but rated for 500 mW | Higher power handling but looser voltage accuracy and less board-area efficient | Choose when thermal margin is critical and ±5 % regulation tolerance is acceptable in cost-sensitive designs |
Compared with PZU3.3B1,115, the BZX384-B3V3,115 trades regulation precision for broader vendor availability, while MMSZ5226BS-7-F sacrifices miniaturization and tight tolerance for higher power derating headroom-making PZU3.3B1,115 optimal for compact, precision-biased analog subsystems.
Availability
PZU3.3B1,115 is available at Aetrix Electronics and suitable for voltage reference design, power rail clamping, and analog signal conditioning requiring stable component supply across industrial control, medical instrumentation, and portable electronics programs.
Supply support for PZU3.3B1,115 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 voltage regulation and reference functions in consumer, computing, and industrial electronics.
FAQ
What is the Zener voltage range of the PZU3.3B1,115 at 5 mA test current?
The PZU3.3B1,115 has a guaranteed Zener voltage range of 3.10 V to 3.35 V when measured at IZ = 5 mA and Tj = 25 °C. This 2.5 V span reflects its ±2 % B1 tolerance grade and is validated per NXP's PZUxB series product data sheet Rev. 02. The PZU3.3B1,115 achieves tighter regulation than the B-grade variant (3.10 V–3.50 V) due to binning during manufacturing.
Does the PZU3.3B1,115 support reflow soldering, and what is its maximum peak temperature rating?
Yes, the PZU3.3B1,115 is qualified for reflow soldering per JEDEC J-STD-020, with a maximum peak temperature of 260 °C for ≤10 seconds. Its SOD323F package uses lead-free terminations compatible with standard Pb-free reflow profiles. The PZU3.3B1,115 must not be subjected to wave or hand soldering, as specified in Section 10 of the NXP datasheet.
What is the thermal resistance from junction to ambient for the PZU3.3B1,115 on a standard FR4 PCB?
When mounted on an FR4 PCB with single-sided copper, tin-plated finish, and standard footprint (per Figure 7), the PZU3.3B1,115 exhibits a thermal resistance Rth(j-a) of 400 K/W in free air and 230 K/W with standard copper land pattern. These values are defined in Table 6 of the NXP datasheet and directly impact safe operating power limits at elevated ambient temperatures.
How does the temperature coefficient of the PZU3.3B1,115 affect its performance across industrial temperature ranges?
The PZU3.3B1,115 has a typical temperature coefficient of −2.4 mV/K at IZ = 5 mA, meaning its Zener voltage decreases by approximately 2.4 mV per Kelvin rise in junction temperature. Over −40 °C to +125 °C ambient, this results in ~370 mV total drift-predictable and compensatable in precision reference designs. The PZU3.3B1,115's coefficient is documented in Table 8 and Fig. 2 of the NXP datasheet.
Can the PZU3.3B1,115 be used as a replacement for older Zener diodes like the 1N4728A in new designs?
No-the PZU3.3B1,115 is not a direct replacement for through-hole devices like the 1N4728A due to fundamental differences in package (SOD323F vs. DO-41), thermal behavior, and mounting requirements. While both regulate at ~3.3 V, the PZU3.3B1,115 requires reflow-compatible PCB layout and delivers tighter tolerance and lower dynamic impedance. Migration requires full layout and thermal validation-not just electrical equivalence.
PZU3.3B1,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- -
- Tolerance:
- -
- Power - Max:
- -
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- -
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
PZU3.3B1,115 FAQ
1.How can I place an order for PZU3.3B1,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU3.3B1,115 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 PZU3.3B1,115 reliable?
The price and inventory of PZU3.3B1,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU3.3B1,115 is usually 5 days.
3.What payment methods are accepted for PZU3.3B1,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU3.3B1,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU3.3B1,115?
PZU3.3B1,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU3.3B1,115 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 PZU3.3B1,115?
For technical support, including PZU3.3B1,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU3.3B1,115 requirements.
6.How does Aetrix verify that PZU3.3B1,115 is sourced from the original manufacturer or authorized distributors?
All PZU3.3B1,115 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 PZU3.3B1,115 meets industry standards.
7.What is the process for return or replacement of PZU3.3B1,115?
All PZU3.3B1,115 units undergo pre-shipment inspection (PSI). If there is an issue with PZU3.3B1,115, 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 PZU3.3B1,115 part is unused and in its original packaging.
Return procedure for PZU3.3B1,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PZU3.3B1,115 Tags
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