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Nexperia USA Inc. PDZ12B,115
- Part No.:
- PDZ12B,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PDZ12B,115.pdf
- Description:
- DIODE ZENER 12V 400MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:5,844
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Product details
Overview
PDZ12B,115 from Nexperia is a single Zener diode designed for low-power voltage regulation in surface-mounted applications. It provides a nominal 12 V Zener voltage at 5 mA, with ±2 % tolerance, 80 Ω maximum differential resistance at 5 mA, 0.1 μA maximum reverse leakage at 9.0 V, and operates within a 400 mW total power dissipation limit on FR4 PCB. It is used in precision reference and overvoltage protection circuits in consumer power supplies and sensor signal conditioning.
For engineers reviewing the PDZ12B,115 datasheet, PDZ12B,115 pinout, PDZ12B,115 application, or PDZ12B,115 equivalent, this device is selected for stable low-current voltage clamping where compact SOD323 packaging, hard breakdown knee, and low temperature coefficient (±8.4 mV/K) are critical to circuit accuracy and thermal stability.
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 under controlled current conditions. Its hard breakdown knee and low dynamic impedance (≤80 Ω at IZ = 5 mA) ensure minimal voltage variation during load transients in feedback or reference paths.
Thermal performance is defined by Rth(j-a) = 340 K/W and Rth(j-sp) = 130 K/W on standard FR4 PCB, enabling predictable derating above 25 °C ambient. The −65 °C to +150 °C storage and junction temperature range supports industrial-grade operation without special thermal management.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 11.74 V to 12.24 V at IZ = 5 mA - defines precise clamping threshold for 12 V rail stabilization |
| Differential Resistance rdif | ≤80 Ω at IZ = 5 mA - ensures <0.4 V deviation over ±1 mA current change in regulation zone |
| Reverse Leakage IR | ≤0.1 μA at VR = 9.0 V - minimizes quiescent current loss in battery-powered bias networks |
| Temperature Coefficient SZ | +8.4 mV/K at IZ = 5 mA - enables predictable drift compensation in temperature-sensitive references |
| Total Power Dissipation Ptot | 400 mW at Tamb ≤ 25 °C - sets maximum continuous DC or pulsed power handling on standard PCB layout |
| Forward Voltage VF | 0.9 V at IF = 10 mA - defines forward conduction drop when used bidirectionally or in ESD clamp configurations |
| Junction Temperature Tj | +150 °C maximum - determines upper thermal limit for reliability in enclosed or high-ambient environments |
Pinout & Package
The PDZ12B,115 is housed in a SOD323 (SC-76) plastic surface-mounted 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 (K) | Cathode | Connected to regulated output node; reverse-biased terminal where Zener breakdown occurs |
| 2 (A) | Anode | Connected to ground or lower-potential reference; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Hard breakdown knee | Enables sharp, repeatable turn-on at VZ, reducing regulation hysteresis in precision feedback loops |
| Low dynamic impedance | ≤80 Ω at 5 mA ensures <1% voltage shift under ±10% current variation-critical for ADC reference stability |
| Small SOD323 footprint | 1.8 × 1.35 mm outline allows placement in space-constrained layouts such as portable sensor modules |
| ±2 % VZ tolerance | Reduces need for post-production trimming in factory calibration of voltage monitors and comparators |
| Low leakage at low VR | 0.1 μA max at 9.0 V prevents loading of high-impedance bias networks in op-amp input stages |
Applications
| Power Supply Reference | Sensor Signal Conditioning |
|---|---|
Use Scenario: Providing stable 12 V reference for linear regulators or comparator thresholds in wall-adapters and USB-C PD auxiliary circuits. IC Role / Device Role / Timing Role: Shunt voltage reference element establishing fixed potential against which output voltage is compared. Use Value: Tight 11.74–12.24 V window and +8.4 mV/K TC allow direct use without external compensation in 0–70 °C ambient ranges. |
Use Scenario: Clamping analog sensor outputs (e.g., thermistor bridges or Hall-effect ICs) to prevent overvoltage damage to downstream ADC inputs. IC Role / Device Role / Timing Role: Passive overvoltage protection device placed between sensor output and microcontroller analog input pin. Use Value: Hard breakdown knee and 0.1 μA leakage avoid signal distortion while ensuring fast response to >12.5 V transients. |
| Microcontroller Reset Circuit | LED Current Regulation |
Use Scenario: Generating clean reset voltage threshold for brown-out detection in 12 V powered MCU systems (e.g., automotive body control modules). IC Role / Device Role / Timing Role: Zener-based voltage divider leg feeding comparator input in dedicated reset IC or discrete supervisor design. Use Value: Low 80 Ω rdif maintains threshold accuracy despite supply ripple up to ±50 mV at 100 Hz. |
Use Scenario: Setting constant current for indicator LEDs in industrial HMI panels where 12 V rail powers multiple parallel strings. IC Role / Device Role / Timing Role: Series-pass voltage reference in simple LED driver topology with current-setting resistor. Use Value: 400 mW Ptot rating supports ≥33 mA continuous current through 360 Ω resistor at 12 V, enabling robust visual status indication. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55C12 (ON Semiconductor) | Same 12 V nominal VZ, but ±5 % tolerance and higher rdif (≤150 Ω); TO-92 through-hole package | Requires board real estate for leaded mounting and lacks SOD323's thermal efficiency on dense PCBs | Select only if legacy through-hole assembly or cost sensitivity outweighs SMT density and regulation precision |
| MMSZ5242B (Diodes Inc.) | 12 V nominal VZ, ±5 % tolerance, 90 Ω rdif, SOD-123 package (larger than SOD323, 2.7 × 1.7 mm) | Higher thermal resistance (~400 K/W) reduces power margin in confined layouts | Prefer when existing SOD-123 footprint reuse is required, but expect ~10 % higher voltage drift under thermal load |
Compared with BZX55C12 and MMSZ5242B, PDZ12B,115 delivers tighter tolerance, lower impedance, and superior thermal performance in the smallest footprint-making it optimal for high-density, precision-regulated 12 V subsystems.
Availability
PDZ12B,115 is available at Aetrix Electronics and suitable for power supply reference, sensor signal conditioning, microcontroller reset circuits, and LED current regulation requiring stable component supply and consistent parametric performance across production batches.
Supply support for PDZ12B,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 leading global semiconductor expert delivering high-performance, reliable discrete, logic, and MOSFET devices optimized for efficiency and miniaturization in mass-market electronics.
PDZ12B,115 belongs to the PDZ-B series of low-power Zener diodes engineered specifically for general-purpose voltage regulation in space-constrained, surface-mounted designs across consumer, industrial, and computing applications.
FAQ
What is the maximum continuous reverse current for PDZ12B,115 before exceeding its power rating?
At 25 °C ambient on standard FR4 PCB, PDZ12B,115 sustains up to 33.3 mA continuously (400 mW ÷ 12 V) without exceeding Ptot. Derating begins above 25 °C per the 340 K/W Rth(j-a); at 70 °C ambient, max continuous IZ drops to ~22 mA to maintain Tj ≤ 150 °C.
Does PDZ12B,115 support bidirectional ESD protection?
No-PDZ12B,115 is a unidirectional Zener diode rated only for reverse-bias regulation. Its forward voltage is 0.9 V at 10 mA, but it lacks specified ESD parameters (e.g., IEC 61000-4-2 rating) or symmetric breakdown behavior required for robust bidirectional transient suppression.
How does the +8.4 mV/K temperature coefficient affect long-term voltage stability?
A +8.4 mV/K coefficient means VZ increases by ~0.42 V over a 50 °C rise (e.g., 25 °C to 75 °C). In circuits requiring <1 % drift, this must be compensated via resistor ratio design or paired with negative-TC components; it is not inherently unstable but requires thermal-aware layout.
Can PDZ12B,115 replace PDZ12B without revision impact?
Yes-PDZ12B,115 is the full-orderable part number for the PDZ12B device in SOD323 package with 115 tape-and-reel packaging option (3000 pcs/reel). Electrical specs, marking (ZH), and thermal behavior are identical to base PDZ12B; only packaging format differs.
PDZ12B,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):
- 12 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 9 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
PDZ12B,115 FAQ
1.How can I place an order for PDZ12B,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ12B,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 PDZ12B,115 reliable?
The price and inventory of PDZ12B,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDZ12B,115 is usually 5 days.
3.What payment methods are accepted for PDZ12B,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ12B,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ12B,115?
PDZ12B,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ12B,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 PDZ12B,115?
For technical support, including PDZ12B,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ12B,115 requirements.
6.How does Aetrix verify that PDZ12B,115 is sourced from the original manufacturer or authorized distributors?
All PDZ12B,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 PDZ12B,115 meets industry standards.
7.What is the process for return or replacement of PDZ12B,115?
All PDZ12B,115 units undergo pre-shipment inspection (PSI). If there is an issue with PDZ12B,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 PDZ12B,115 part is unused and in its original packaging.
Return procedure for PDZ12B,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDZ12B,115 Tags
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