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Nexperia USA Inc. PDZ20BZ
- Part No.:
- PDZ20BZ
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PDZ20BZ.pdf
- Description:
- DIODE ZENER 20V 400MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:30,000
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Product details
Overview
PDZ20BZ from Nexperia is a single Zener diode designed for low-power voltage regulation in space-constrained SMD applications, featuring a nominal Zener voltage of 20 V (19.52–20.39 V at IZ = 5 mA), ±2 % tolerance, 100 Ω maximum differential resistance at 5 mA, 0.05 μA maximum reverse leakage at 15 V, and 1.5 mV/K temperature coefficient. It operates in general-purpose regulator circuits requiring stable reference voltages under low-current conditions.
For engineers reviewing the PDZ20BZ datasheet, PDZ20BZ pinout, PDZ20BZ application, or PDZ20BZ equivalent, this device is selected for precision clamping, overvoltage protection, and biasing in portable power management, sensor interface conditioning, and industrial control signal stabilization where compact size and tight voltage tolerance are critical.
Technical Context
This Zener diode functions as a two-terminal voltage reference with hard breakdown knee and low dynamic impedance-enabling stable regulation even at low test currents (IZ = 0.5 mA to 5 mA). Its thermal coefficient of +16.4 mV/K at 5 mA supports predictable drift behavior across operating temperatures.
The device uses silicon planar technology in an SOD323 package, optimized for surface-mount reflow soldering on FR4 PCBs. Junction-to-ambient thermal resistance is 340 K/W, limiting continuous power dissipation to 400 mW at 25 °C ambient with derating above that temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 19.52–20.39 V at IZ = 5 mA - defines precise clamping threshold for 20 V nominal regulation |
| Differential Resistance rdif | ≤100 Ω at IZ = 5 mA - ensures minimal output voltage variation under load current changes |
| Reverse Leakage IR | ≤0.05 μA at VR = 15 V - enables ultra-low standby current in battery-powered circuits |
| Temperature Coefficient SZ | +16.4 mV/K at IZ = 5 mA - quantifies voltage drift per degree Celsius for thermal design margining |
| Power Dissipation Ptot | 400 mW at Tamb = 25 °C - sets maximum steady-state power handling on standard FR4 PCB |
| Forward Voltage VF | 0.9 V at IF = 10 mA - determines forward conduction loss in series protection configurations |
| Junction Temperature Tj | −65 to +150 °C - defines operational envelope for reliability-critical embedded environments |
Pinout & Package
PDZ20BZ is housed in a SOD323 (SC-76) plastic surface-mount package measuring 1.8 × 1.35 × 0.95 mm, with cathode marked by a bar on the top surface. The package is optimized for automated placement and reflow soldering using standard footprint dimensions (0.6 mm pad width, 2.1 mm center-to-center pitch).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to regulated output node; polarity must be observed to ensure reverse-bias operation |
| 2 (A) | Anode | Connected to ground or lower-potential rail; forms current path during Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| Low dynamic impedance at low current | 100 Ω max at 5 mA enables stable regulation in micro-power circuits (<100 μA quiescent) |
| Hard breakdown knee | Sharp transition into conduction improves accuracy of voltage clamping without soft roll-off |
| Tight voltage tolerance | ±2 % ensures predictable regulation without post-production trimming in cost-sensitive designs |
| Ultra-low leakage current | 0.05 μA max at 15 V minimizes parasitic loading in high-impedance reference nodes |
| SOD323 footprint compatibility | Standardized 0.65 mm pitch allows drop-in replacement in existing 0402-class layouts |
Applications
| Portable Power Management | Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Regulating bias voltage for low-power analog front-ends in wearables and IoT edge nodes. IC Role / Device Role / Timing Role: Zener reference source providing stable 20 V supply to op-amp rails and ADC references. Use Value: Enables <1 μA sleep-mode current draw while maintaining 0.4 % regulation accuracy across −40 to +85 °C. |
Use Scenario: Clamping transient overvoltage on thermistor or RTD input lines exposed to ESD events. IC Role / Device Role / Timing Role: Bidirectional transient suppressor protecting downstream instrumentation amplifiers. Use Value: Limits voltage excursions to ≤20.4 V with <10 ns response time, preventing amplifier saturation or latch-up. |
| Industrial Control Interface | LED Driver Biasing |
|
Use Scenario: Providing reference voltage for 4–20 mA loop transmitter DACs in PLC analog output modules. IC Role / Device Role / Timing Role: Precision shunt regulator stabilizing DAC reference node against supply ripple. Use Value: Maintains 12-bit linearity (±0.5 LSB error) despite ±100 mV supply variation due to low rdif. |
Use Scenario: Setting constant-current threshold for linear LED driver ICs in architectural lighting controls. IC Role / Device Role / Timing Role: Zener-based current-sense reference enabling accurate LED current setpoint. Use Value: Delivers ±1.5 % current accuracy over temperature with no external trim components required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C20 | Same 20 V nominal, but ±5 % tolerance and 150 Ω rdif; higher leakage (0.1 μA) | Acceptable for non-critical biasing where tighter regulation is not required | Select when cost sensitivity outweighs regulation precision and thermal stability needs |
| MMSZ5249B | 20 V nominal, ±5 % tolerance, 100 Ω rdif, but rated for only 350 mW Ptot | Suitable for lower-power circuits with limited board area and no thermal derating margin | Choose if layout constraints prevent use of larger packages and peak power remains <300 mW |
Compared with BZX84-C20 and MMSZ5249B, PDZ20BZ delivers superior voltage accuracy (±2 % vs ±5 %), lower thermal drift (+16.4 mV/K vs typical +20–25 mV/K), and higher power headroom (400 mW), making it optimal for precision analog and long-lifetime industrial applications.
Availability
PDZ20BZ is available at Aetrix Electronics and suitable for portable power management, sensor signal conditioning, and industrial control interface applications requiring stable component supply with guaranteed long-term continuity.
Supply support for PDZ20BZ 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, energy-efficient logic, discrete, and MOSFET devices, headquartered in Nijmegen, Netherlands.
The PDZ-B series belongs to Nexperia's general-purpose Zener diode product line, engineered specifically for reliable, low-cost voltage regulation and clamping in consumer, industrial, and computing applications where small size and consistent performance are essential.
FAQ
What is the maximum reverse voltage PDZ20BZ can withstand before breakdown?
The PDZ20BZ has a nominal Zener voltage of 20 V, with a guaranteed range of 19.52 V to 20.39 V at 5 mA test current. Breakdown occurs within this band under reverse bias; it is not rated for sustained operation above 20.39 V. Exceeding the absolute maximum reverse voltage of 27 V (per Table 5, IZSM limit) risks permanent damage.
Can PDZ20BZ be used in series or parallel configurations?
PDZ20BZ is not recommended for parallel connection due to mismatched Zener voltages causing current hogging. In series, total voltage equals sum of individual VZ values, but thermal coupling must be managed-uneven heating alters regulation points. For multi-voltage references, use dedicated multi-Zener arrays or precision voltage references instead.
How does thermal derating affect PDZ20BZ's power handling above 25 °C?
PDZ20BZ's 400 mW rating applies only at Tamb = 25 °C. Above that, power must be reduced linearly: at 75 °C ambient, maximum allowable power drops to 200 mW (derating slope = 4 mW/°C, based on Rth(j-a) = 340 K/W). This ensures junction temperature stays below 150 °C.
Is PDZ20BZ automotive qualified?
No. PDZ20BZ is not AEC-Q200 qualified and is explicitly designated for industrial and consumer applications. Nexperia's official documentation states it is "non-automotive qualified" and unsuitable for safety-critical or life-support systems. Automotive designs require parts explicitly tested to AEC-Q200 Grade 2 or 1 standards.
PDZ20BZ 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):
- 20 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 15 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
PDZ20BZ FAQ
1.How can I place an order for PDZ20BZ through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ20BZ 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 PDZ20BZ reliable?
The price and inventory of PDZ20BZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDZ20BZ is usually 5 days.
3.What payment methods are accepted for PDZ20BZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ20BZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ20BZ?
PDZ20BZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ20BZ 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 PDZ20BZ?
For technical support, including PDZ20BZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ20BZ requirements.
6.How does Aetrix verify that PDZ20BZ is sourced from the original manufacturer or authorized distributors?
All PDZ20BZ 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 PDZ20BZ meets industry standards.
7.What is the process for return or replacement of PDZ20BZ?
All PDZ20BZ units undergo pre-shipment inspection (PSI). If there is an issue with PDZ20BZ, 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 PDZ20BZ part is unused and in its original packaging.
Return procedure for PDZ20BZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDZ20BZ Tags
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