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Nexperia USA Inc. PDZ3.9B,115
- Part No.:
- PDZ3.9B,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PDZ3.9B,115.pdf
- Description:
- DIODE ZENER 3.9V 400MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:5,289
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Product details
Overview
PDZ3.9B,115 from Nexperia is a single low-power Zener diode in SOD323 (SC-76) package, designed for precision voltage regulation at 3.9 V nominal working voltage with ±2 % tolerance, 90 Ω max differential resistance at 5 mA, and 3 μA max reverse leakage at 1.0 V. It operates in general-purpose analog signal conditioning and power rail stabilization circuits where compact size and stable knee characteristics are required.
For engineers reviewing the PDZ3.9B,115 datasheet, PDZ3.9B,115 pinout, PDZ3.9B,115 application, or PDZ3.9B,115 equivalent, this device is selected for low-current reference clamping, overvoltage protection in sensor interfaces, and biasing networks requiring tight voltage tolerance and hard breakdown behavior in space-constrained PCB layouts.
Technical Context
This Zener diode functions as a two-terminal shunt voltage regulator, maintaining a stable reverse-biased breakdown voltage across its cathode–anode terminals when operated above its specified test current (IZ = 5 mA). Its hard breakdown knee and low dynamic impedance (≤90 Ω) ensure minimal voltage variation under load shifts typical in low-power analog monitoring paths.
Thermal performance is defined by junction-to-solder-point thermal resistance of 130 K/W and junction-to-ambient of 340 K/W on FR4 PCB, enabling reliable operation up to +150 °C junction temperature while dissipating ≤400 mW at 25 °C ambient - derated linearly above that point per the published curve.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage (VZ) | 3.9 V at IZ = 5 mA; defines precise clamping threshold for 3.3 V–5 V rail protection and reference generation |
| Zener Voltage Tolerance | ±2 %; ensures predictable regulation window (3.89 V–4.16 V), critical for repeatable circuit behavior without post-production trimming |
| Differential Resistance (rdif) | ≤90 Ω at IZ = 5 mA; maintains <100 mV output shift per 1 mA load change, supporting stable feedback in low-current references |
| Reverse Leakage Current (IR) | ≤3 μA at VR = 1.0 V; minimizes parasitic loading in high-impedance bias networks and battery-powered sensing nodes |
| Power Dissipation (Ptot) | 400 mW at Tamb = 25 °C; supports continuous operation in compact SOD323 footprint without forced cooling in ambient-temperature industrial environments |
| Forward Voltage (VF) | ≤0.9 V at IF = 10 mA; enables use as polarity-sensitive clamp or ESD path in bidirectional signal lines with low forward drop penalty |
| Temperature Coefficient (SZ) | −2.5 mV/K at IZ = 5 mA; provides predictable negative drift for compensation schemes in temperature-stable references |
Pinout & Package
The PDZ3.9B,115 is housed in a surface-mount SOD323 (SC-76) plastic package measuring 1.8 mm × 1.35 mm × 0.95 mm, with cathode identified by a marking bar on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Marked side) | Cathode (K) | Connected to regulated voltage node; reverse-biased terminal where Zener breakdown occurs; marking bar aligns with this pin |
| 2 | Anode (A) | Connected to ground or lower-potential reference; completes current path during regulation; polarity must be observed to avoid forward conduction |
Key Features
| Feature | Design Value |
|---|---|
| Hard breakdown knee | Enables sharp, repeatable turn-on at rated VZ, reducing ambiguity in clamping thresholds for precision overvoltage detection |
| Low dynamic impedance | ≤90 Ω at 5 mA ensures minimal voltage sag under small-signal load transients in feedback loops and reference dividers |
| Small SOD323 footprint | 1.8 mm × 1.35 mm body allows placement in dense mixed-signal layouts without sacrificing thermal margin or routing space |
| Low leakage at low VR | ≤3 μA at 1.0 V reverse bias preserves accuracy in high-Z biasing networks and battery-backed monitoring circuits |
| Stable ±2 % tolerance | Eliminates need for external trimming in cost-sensitive consumer and industrial applications requiring predictable regulation setpoints |
Applications
| Industrial Sensor Signal Conditioning | USB-C Port Overvoltage Clamp |
|---|---|
|
Use Scenario: Stabilizing reference voltage for 12-bit ADC front-end in temperature/humidity sensors operating from 3.3 V supply. IC Role / Device Role / Timing Role: Shunt Zener regulator providing fixed 3.9 V reference to op-amp bias network and ADC VREF input. Use Value: Tight ±2 % tolerance and low 3 μA leakage prevent gain error and offset drift in measurement chain under varying temperature and supply conditions. |
Use Scenario: Protecting USB-C CC line receiver IC from transient overvoltage events during hot-plug or ESD discharge. IC Role / Device Role / Timing Role: Fast-acting shunt clamp limiting CC line voltage to 3.9 V before damage threshold of downstream PHY. Use Value: Hard breakdown knee and ≤90 Ω impedance ensure sub-100 ns response to 1 kV ESD pulses without overshoot beyond safe logic levels. |
| Low-Power IoT Node Biasing | Programmable Logic Supply Clamp |
|
Use Scenario: Generating stable bias point for LDO enable input and microcontroller reset supervisor in coin-cell-powered BLE beacon. IC Role / Device Role / Timing Role: Low-leakage Zener establishing 3.9 V threshold to trigger reset when main supply drops below 3.6 V. Use Value: ≤3 μA reverse current extends battery life beyond 5 years while maintaining accurate undervoltage detection hysteresis. |
Use Scenario: Clamping FPGA configuration voltage (VCCIO) during power sequencing to prevent latch-up during partial power-up. IC Role / Device Role / Timing Role: Passive shunt element absorbing surge energy during VCCIO ramp-up, holding voltage within 3.9 V ±2 % window. Use Value: 400 mW power rating and SOD323 thermal resistance allow safe dissipation of 100 ms surges without thermal runaway or parameter shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B3V9,115 | Same SOD323 package, identical 3.9 V nominal, but ±5 % tolerance and higher 150 Ω rdif | Acceptable where tighter regulation not required; less suitable for precision reference or low-leakage biasing | Select when cost sensitivity outweighs voltage stability requirements in non-critical clamping roles |
| MMSZ4685T1G | SOD-123 package (larger), same 3.9 V nominal, ±5 % tolerance, 100 Ω rdif, 5 μA IR | Compatible for board-level replacement if layout allows larger footprint; higher leakage limits use in ultra-low-power nodes | Choose only if existing design uses SOD-123 and rework is impractical; verify thermal margin with 340 K/W Rth(j-a) |
Compared with BZX384-B3V9,115 and MMSZ4685T1G, PDZ3.9B,115 delivers superior regulation precision (±2 % vs ±5 %), lower dynamic impedance (≤90 Ω vs ≥100 Ω), and reduced leakage (≤3 μA vs ≥5 μA), making it optimal for high-accuracy, low-power, and space-constrained designs where voltage stability directly impacts system performance.
Availability
PDZ3.9B,115 is available at Aetrix Electronics and suitable for industrial sensor interfaces, USB-C port protection, low-power IoT biasing, and FPGA configuration clamping requiring stable component supply and consistent parametric performance across production lots.
Supply support for PDZ3.9B,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 specializing in high-performance, high-reliability discrete, logic, and MOSFET devices, headquartered in Nijmegen, Netherlands, with manufacturing in Europe and Asia.
The PDZ-B series belongs to Nexperia's general-purpose Zener diode product line, engineered specifically for compact, low-power voltage regulation and clamping in consumer, industrial, and computing applications where SMD scalability and parametric consistency are essential.
FAQ
What is the maximum continuous reverse current the PDZ3.9B,115 can sustain at 25 °C ambient?
The PDZ3.9B,115 does not specify a maximum continuous reverse current (IZ) limit; instead, its safe operating area is governed by total power dissipation. At 25 °C ambient, it supports up to 400 mW, translating to approximately 102 mA at 3.9 V (P = V × I). Operation above this requires derating per the published power derating curve.
Can PDZ3.9B,115 be used in place of a 3.3 V Zener diode for logic-level clamping?
No - PDZ3.9B,115 is rated for 3.9 V nominal Zener voltage (3.89–4.16 V range), exceeding standard 3.3 V logic thresholds. Using it for 3.3 V clamping risks incomplete protection or unintended forward conduction; a dedicated 3.3 V Zener such as PDZ3.3B is required for accurate alignment with 3.3 V system rails.
Is the SOD323 package of PDZ3.9B,115 compatible with standard reflow soldering profiles?
Yes - Nexperia specifies compatibility with JEDEC J-STD-020D reflow profiles. The recommended footprint (Figure 9) uses 0.5 mm wide × 1.65 mm long solder lands with 0.6 mm solder resist opening, supporting peak temperatures up to 260 °C for ≤10 seconds without package damage or parametric shift.
Does PDZ3.9B,115 have automotive qualification?
No - PDZ3.9B,115 is not AEC-Q200 qualified. The datasheet explicitly states "Non-automotive qualified products" and prohibits use in safety-critical or automotive applications unless separately validated by the customer. For automotive designs, Nexperia's Automotive Qualified Zener series (e.g., BZX84-Axxx) must be selected.
PDZ3.9B,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):
- 3.9 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 3 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
PDZ3.9B,115 FAQ
1.How can I place an order for PDZ3.9B,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ3.9B,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 PDZ3.9B,115 reliable?
The price and inventory of PDZ3.9B,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDZ3.9B,115 is usually 5 days.
3.What payment methods are accepted for PDZ3.9B,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ3.9B,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ3.9B,115?
PDZ3.9B,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ3.9B,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 PDZ3.9B,115?
For technical support, including PDZ3.9B,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ3.9B,115 requirements.
6.How does Aetrix verify that PDZ3.9B,115 is sourced from the original manufacturer or authorized distributors?
All PDZ3.9B,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 PDZ3.9B,115 meets industry standards.
7.What is the process for return or replacement of PDZ3.9B,115?
All PDZ3.9B,115 units undergo pre-shipment inspection (PSI). If there is an issue with PDZ3.9B,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 PDZ3.9B,115 part is unused and in its original packaging.
Return procedure for PDZ3.9B,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDZ3.9B,115 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
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SMAZ12-13-F
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