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Nexperia USA Inc. PDZ30BZ
- Part No.:
- PDZ30BZ
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PDZ30BZ.pdf
- Description:
- DIODE ZENER 30V 400MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:29,818
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Product details
Overview
PDZ30BZ from Nexperia is a single silicon Zener diode designed for low-power voltage regulation in surface-mounted applications, with a nominal Zener voltage of 30 V (29.19 V to 30.69 V at IZ = 5 mA), total power dissipation up to 400 mW, differential resistance ≤ 200 Ω at IZ = 0.5 mA, and reverse current ≤ 0.05 μA at VR = 23 V - used in precision reference and overvoltage clamp circuits in power management subsystems.
For engineers reviewing the PDZ30BZ datasheet, PDZ30BZ pinout, PDZ30BZ application, or PDZ30BZ equivalent, this page delivers verified package mapping (SOD323), cathode/anode terminal roles, thermal resistance (Rth(j-sp) = 130 K/W), temperature coefficient (+26.6 mV/K), and real-world Zener regulation behavior under 5 mA test current.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable DC voltage across its terminals under varying load or input conditions. Its hard breakdown knee and low leakage (<0.05 µA at 23 V) support reliable clamping in low-current bias networks and reference dividers.
The device exhibits a positive temperature coefficient of +26.6 mV/K at 5 mA, enabling predictable drift compensation in multi-diode references. Thermal performance is defined for FR4 PCB mounting (single-sided copper, standard footprint), with junction-to-solder-point resistance of 130 K/W and junction-to-ambient of 340 K/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 29.19 V to 30.69 V at IZ = 5 mA - defines precise regulation point for feedback or clamp circuits |
| Differential Resistance rdif | ≤ 200 Ω at IZ = 0.5 mA - ensures minimal voltage shift under small load variations |
| Reverse Current IR | ≤ 0.05 µA at VR = 23 V - enables ultra-low standby power in always-on protection paths |
| Temperature Coefficient SZ | +26.6 mV/K at IZ = 5 mA - supports predictable thermal drift modeling in reference designs |
| Total Power Dissipation Ptot | 400 mW at Tamb ≤ 25 °C - sets maximum continuous power handling on standard FR4 PCB |
| Forward Voltage VF | 0.9 V at IF = 10 mA - confirms low-loss forward conduction for bidirectional protection use cases |
| Junction Temperature Tj | Up to +150 °C - allows operation in thermally constrained industrial environments |
Pinout & Package
PDZ30BZ is housed in a SOD323 (SC-76) plastic surface-mount package measuring 1.8 mm × 1.35 mm × 0.95 mm, with cathode identified by a marking bar on the 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; completes reverse-bias path for regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low dynamic impedance at low currents | 200 Ω differential resistance at 0.5 mA enables stable regulation even in micro-power bias networks |
| Hard breakdown knee | Sharp, well-defined reverse conduction onset improves accuracy in precision clamping applications |
| Ultra-low leakage current | ≤ 0.05 µA at 23 V minimizes parasitic loading in high-impedance reference nodes |
| SOD323 package compatibility | Standardized 2-pin footprint supports automated placement and reflow soldering on dense PCB layouts |
| ±2 % voltage tolerance | Tight initial VZ spread reduces need for post-assembly trimming in production systems |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
|
Use Scenario: Providing stable 30 V reference for ADC voltage dividers or op-amp bias networks in industrial sensor signal conditioning. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to fix reference potential relative to ground. Use Value: Delivers <±2 % initial accuracy and <0.05 µA leakage, minimizing error contribution in 16-bit measurement systems. |
Use Scenario: Protecting microcontroller I/O pins from transient overvoltage events exceeding 30 V in automotive body control modules. IC Role / Device Role / Timing Role: Clamping element shunting excess energy to ground when reverse voltage exceeds VZ. Use Value: Hard breakdown knee and 400 mW power rating enable fast, repeatable clamping without thermal runaway during 100 µs surges. |
| Low-Power Bias Network | Temperature-Compensated Reference |
|
Use Scenario: Generating stable bias current for JFET amplifiers or current mirrors in battery-powered instrumentation. IC Role / Device Role / Timing Role: Zener-regulated current source using series resistor and PDZ30BZ as voltage reference. Use Value: Low 200 Ω dynamic impedance maintains constant current despite supply ripple, extending battery life. |
Use Scenario: Paired with negative-TC Zener (e.g., PDZ5.1B) to construct zero-drift 25 V reference for calibration equipment. IC Role / Device Role / Timing Role: Positive-temperature-coefficient (26.6 mV/K) element balancing negative-TC partner. Use Value: Predictable +26.6 mV/K drift at 5 mA enables accurate cancellation with complementary diodes in matched pairs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B30 | Same 30 V nominal VZ, but SOD323 package with ±5 % tolerance and higher rdif (300 Ω) | Lower accuracy and stability make it suitable only for non-critical clamping, not precision references | Select when cost sensitivity outweighs regulation accuracy requirements |
| MMSZ5261B | 30 V nominal VZ, SOD-123 package, ±5 % tolerance, rdif = 35 Ω at 20 mA - optimized for higher-current operation | Requires ≥20 mA test current for spec compliance; unsuitable for micro-power bias networks | Prefer for higher-current clamping where board space allows larger SOD-123 footprint |
Compared with BZX384-B30 and MMSZ5261B, PDZ30BZ offers tighter ±2 % tolerance, lower leakage (0.05 µA vs. 1 µA), and superior low-current regulation (200 Ω @ 0.5 mA), making it uniquely suited for precision, low-power reference design - not just generic clamping.
Availability
PDZ30BZ is available at Aetrix Electronics and suitable for industrial sensor interfaces, battery-powered instrumentation, and automotive body electronics requiring stable component supply with guaranteed long-term continuity.
Supply support for PDZ30BZ 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 for automotive, industrial, and consumer markets.
PDZ30BZ belongs to the PDZ-B series of low-power Zener diodes engineered specifically for precision voltage regulation and overvoltage protection in space-constrained, surface-mounted designs.
FAQ
What is the maximum reverse voltage PDZ30BZ can withstand before breakdown?
The PDZ30BZ has a nominal Zener voltage of 29.19 V to 30.69 V at 5 mA test current, with a hard breakdown knee ensuring stable regulation above ~28.5 V. It is not rated for sustained reverse voltage beyond its specified VZ range - operation above 30.69 V risks exceeding its 400 mW power limit unless current is strictly limited by external series resistance.
Can PDZ30BZ be used in series for higher-voltage reference generation?
Yes - PDZ30BZ may be cascaded with other PDZ-B series diodes (e.g., PDZ5.1B) to build multi-Zener references. However, due to its +26.6 mV/K temperature coefficient, pairing with a negative-TC diode is required to achieve net-zero drift; mismatched coefficients will cause compounded thermal error in series configurations.
Is PDZ30BZ suitable for surge protection against ESD or lightning transients?
No - PDZ30BZ is rated for non-repetitive peak reverse current of only 1.0 A (100 µs pulse), insufficient for robust ESD or lightning-level surge suppression. It functions effectively as a low-energy clamp or reference, but dedicated TVS diodes like PESD5V0S1BA should be used for system-level transient protection.
How does the SOD323 package affect thermal performance in high-density PCB layouts?
Mounted on standard FR4 with single-sided copper, PDZ30BZ achieves Rth(j-sp) = 130 K/W to solder point - meaning a 400 mW dissipation raises junction temperature by ~52 °C above solder point. In compact layouts with limited copper area, derating below 400 mW is essential; adding thermal relief pads or local copper pours significantly improves heat extraction.
PDZ30BZ 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):
- 30 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 23 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
PDZ30BZ FAQ
1.How can I place an order for PDZ30BZ through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ30BZ 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 PDZ30BZ reliable?
The price and inventory of PDZ30BZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDZ30BZ is usually 5 days.
3.What payment methods are accepted for PDZ30BZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ30BZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ30BZ?
PDZ30BZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ30BZ 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 PDZ30BZ?
For technical support, including PDZ30BZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ30BZ requirements.
6.How does Aetrix verify that PDZ30BZ is sourced from the original manufacturer or authorized distributors?
All PDZ30BZ 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 PDZ30BZ meets industry standards.
7.What is the process for return or replacement of PDZ30BZ?
All PDZ30BZ units undergo pre-shipment inspection (PSI). If there is an issue with PDZ30BZ, 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 PDZ30BZ part is unused and in its original packaging.
Return procedure for PDZ30BZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDZ30BZ Tags
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