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Nexperia USA Inc. PDZ3.3B,115
- Part No.:
- PDZ3.3B,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PDZ3.3B,115.pdf
- Description:
- DIODE ZENER 3.3V 400MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:16,631
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Product details
Overview
PDZ3.3B,115 from Nexperia is a single Zener diode designed for low-power voltage regulation in space-constrained SMD applications, with a nominal Zener voltage of 3.32–3.53 V at IZ = 5 mA, ±2 % tolerance, 95 Ω maximum differential resistance, and 5 µA maximum reverse leakage at VR = 1 V. It operates in a SOD323 (SC-76) package and supports general-purpose clamping and reference functions in consumer power supplies and signal conditioning circuits.
For engineers reviewing the PDZ3.3B,115 datasheet, PDZ3.3B,115 pinout, PDZ3.3B,115 application, or PDZ3.3B,115 equivalent, key selection criteria include Zener voltage accuracy at low test current (5 mA), thermal resistance (Rth(j-a) = 340 K/W on FR4), cathode-marked polarity, and compatibility with reflow/wave soldering footprints per JEDEC SC-76 standards.
Technical Context
This Zener diode implements a silicon planar junction structure optimized for stable reverse breakdown with a hard knee and low dynamic impedance. Its temperature coefficient of −2.4 mV/K at IZ = 5 mA enables predictable drift behavior in ambient ranges up to +150 °C junction temperature.
The device is rated for 400 mW total power dissipation at Tamb ≤ 25 °C on standard FR4 PCBs, with derating to zero at ~150 °C ambient. Forward voltage is specified at 0.9 V (IF = 10 mA) and 1.1 V (IF = 100 mA), supporting bidirectional use where forward conduction may occur during transient events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.32–3.53 V at IZ = 5 mA - defines precise clamping threshold for 3.3 V rail stabilization |
| Differential Resistance (rdif) | ≤95 Ω at IZ = 5 mA - ensures minimal voltage shift under load variation |
| Reverse Leakage (IR) | ≤5 µA at VR = 1 V - guarantees low quiescent current in standby reference circuits |
| Power Dissipation (Ptot) | 400 mW at Tamb = 25 °C - sets maximum continuous DC/average power handling on standard FR4 |
| Thermal Resistance (Rth(j-a)) | 340 K/W - determines junction-to-ambient temperature rise under steady-state bias |
| Forward Voltage (VF) | 0.9 V at IF = 10 mA - defines conduction loss when used as ESD clamp or bidirectional protector |
| Package | SOD323 (SC-76) - 1.35 × 0.8 mm footprint compatible with high-density automated assembly |
Pinout & Package
SOD323 (SC-76) surface-mount plastic package with 2 leads; cathode identified by a marking bar on the device body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; reverse-biased terminal where Zener breakdown occurs |
| 2 | Anode (A) | Connected to ground or lower-potential rail; defines polarity for correct biasing in shunt regulator configuration |
Key Features
| Feature | Design Value |
|---|---|
| Low dynamic impedance at low current | 95 Ω max at IZ = 5 mA - improves regulation stability in low-power reference designs |
| Hard breakdown knee | Sharp, well-defined reverse conduction onset - reduces ambiguity in clamping threshold selection |
| Small outline package | SOD323 footprint (1.35 × 0.8 mm) - enables placement in tight-layout consumer electronics and wearables |
| ±2 % voltage tolerance | 3.32–3.53 V range at IZ = 5 mA - supports tighter supply margining than standard 5 % Zeners |
| Low leakage current | ≤5 µA at VR = 1 V - minimizes parasitic loading in high-impedance feedback or sensing nodes |
Applications
| USB Port Overvoltage Protection | Microcontroller Reset Circuit |
|---|---|
|
Use Scenario: Clamps transient surges on 3.3 V USB data or VBUS lines to prevent damage to connected ICs. IC Role / Device Role / Timing Role: Shunt voltage limiter placed between signal line and ground, conducting only above 3.53 V. Use Value: Limits peak voltage to ≤3.53 V while drawing <1 mA at 5 V input, avoiding false resets or latch-up. |
Use Scenario: Provides clean, temperature-stable 3.3 V reference for RC-based reset timing in MCU power-up sequencing. IC Role / Device Role / Timing Role: Precision Zener reference replacing resistor-divider + capacitor networks for improved reset threshold consistency. Use Value: Maintains reset assertion within ±2 % across −40 °C to +85 °C ambient due to −2.4 mV/K tempco and low rdif. |
| Low-Power Sensor Biasing | Industrial Signal Conditioning |
|
Use Scenario: Supplies stable 3.3 V bias to analog sensors (e.g., thermistors, bridge transducers) in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Low-current shunt regulator delivering fixed voltage with <5 µA leakage to maximize battery life. Use Value: Enables >10-year operation on coin cell by limiting quiescent current to sub-µA levels in sleep mode. |
Use Scenario: Stabilizes reference voltage for 12-bit ADC front-end in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Precision voltage clamp ensuring ADC reference stays within 0.5 % of nominal despite supply ripple. Use Value: Reduces measurement error to <0.2 LSB over full industrial temperature range using known tempco compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B3V3,115 | Same SOD323 package; 3.3 V nominal, ±2 %, but higher rdif (120 Ω) and 10 µA IR at VR = 1 V | Less stable under varying load; higher leakage increases error in high-Z sensor biasing | Select when cost sensitivity outweighs regulation precision and leakage requirements |
| MMSZ3V3T1G | SOD123 package (larger); same 3.3 V rating but ±5 % tolerance and 100 Ω rdif; Ptot = 500 mW | Lower accuracy and larger footprint limit use in miniaturized designs; higher power rating suits higher-current clamping | Prefer for legacy board redesigns requiring drop-in replacement with relaxed voltage tolerance |
Compared with BZX384-B3V3,115 and MMSZ3V3T1G, PDZ3.3B,115 delivers superior voltage accuracy (±2 % vs ±5 %), lower leakage (5 µA vs 10 µA), and tighter dynamic impedance (95 Ω vs 120/100 Ω), making it optimal for precision low-power reference and clamping where board space and thermal constraints are critical.
Availability
PDZ3.3B,115 is available at Aetrix Electronics and suitable for USB interface protection, microcontroller reset generation, low-power sensor biasing, and industrial signal conditioning requiring stable component supply and consistent parametric performance across production batches.
Supply support for PDZ3.3B,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 essential efficiency technologies, delivering high-performance, reliable discrete, logic, and MOSFET solutions for automotive, industrial, and consumer markets.
PDZ3.3B,115 belongs to the PDZ-B series of low-power Zener diodes engineered specifically for compact, high-accuracy voltage regulation in space-constrained SMD applications across consumer electronics and industrial control systems.
FAQ
What is the maximum continuous reverse current (IZ) this Zener can handle without exceeding its power rating?
At Tamb = 25 °C, PDZ3.3B,115 supports up to ~120 mA continuous Zener current (calculated as 400 mW ÷ 3.53 V), assuming ideal heat dissipation. In practice, derating applies above 25 °C ambient per Fig. 1, and actual safe IZ depends on PCB copper area and airflow. For sustained operation, design below 80 mA to maintain junction temperature <125 °C.
Can PDZ3.3B,115 be used in place of a 3.3 V LDO for powering small logic circuits?
No - PDZ3.3B,115 is a shunt regulator, not a series regulator. It requires a current-limiting resistor and cannot source load current directly. It's suitable only for low-current reference or clamping (≤1–2 mA typical), not for powering logic that draws >5 mA. An LDO provides regulated output voltage independent of load current; this Zener does not.
How does the −2.4 mV/K temperature coefficient affect circuit performance over temperature?
The negative temperature coefficient means VZ decreases by ~2.4 mV per °C rise in junction temperature. At 85 °C ambient (assuming ΔT ≈ 30 °C), VZ drops ~72 mV from its 25 °C value - shifting from 3.425 V to ~3.353 V. This must be accounted for in precision references; compensation techniques (e.g., series diode cancellation) may be needed for <0.1 % stability.
Is the SOD323 package compatible with standard reflow soldering profiles for lead-free assembly?
Yes - Nexperia specifies compatibility with IPC/JEDEC J-STD-020D reflow profiles. The recommended footprint (Fig. 9) uses 0.6 mm solder lands and 0.5 mm solder paste openings per pad. Peak temperature must not exceed 260 °C for ≤10 seconds, and thermal shock limits are satisfied given the device's qualified MSL level 1 rating per J-STD-020.
PDZ3.3B,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- PDZ-B
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 3.3 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
PDZ3.3B,115 FAQ
1.How can I place an order for PDZ3.3B,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ3.3B,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 PDZ3.3B,115 reliable?
The price and inventory of PDZ3.3B,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDZ3.3B,115 is usually 5 days.
3.What payment methods are accepted for PDZ3.3B,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ3.3B,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ3.3B,115?
PDZ3.3B,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ3.3B,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 PDZ3.3B,115?
For technical support, including PDZ3.3B,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ3.3B,115 requirements.
6.How does Aetrix verify that PDZ3.3B,115 is sourced from the original manufacturer or authorized distributors?
All PDZ3.3B,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 PDZ3.3B,115 meets industry standards.
7.What is the process for return or replacement of PDZ3.3B,115?
All PDZ3.3B,115 units undergo pre-shipment inspection (PSI). If there is an issue with PDZ3.3B,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 PDZ3.3B,115 part is unused and in its original packaging.
Return procedure for PDZ3.3B,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDZ3.3B,115 Tags
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