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Nexperia USA Inc. PDZ2.4BZ
- Part No.:
- PDZ2.4BZ
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PDZ2.4BZ.pdf
- Description:
- DIODE ZENER 2.4V 400MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:29,440
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Product details
Overview
PDZ2.4BZ from Nexperia is a single low-power Zener diode designed for precision voltage regulation in space-constrained SMD applications, with a nominal Zener voltage of 2.43 V to 2.63 V at IZ = 5 mA, ±2 % tolerance, 400 mW total power dissipation, and 1000 Ω maximum differential resistance at IZ = 0.5 mA - used in biasing networks and reference circuits for sensor signal conditioning.
For engineers reviewing the PDZ2.4BZ datasheet, PDZ2.4BZ pinout, PDZ2.4BZ application, or PDZ2.4BZ equivalent, key selection considerations include its 2.4 V Zener working range, cathode-marked SOD323 package, low leakage (≤50 µA at VR = 1.0 V), negative temperature coefficient (−1.6 mV/K), and thermal resistance of 340 K/W on FR4 PCB.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable DC voltage under varying load or supply conditions. Its hard breakdown knee and low dynamic impedance (1000 Ω @ 0.5 mA) ensure predictable regulation onset, while the −1.6 mV/K temperature coefficient enables predictable drift compensation in low-voltage references.
Designed for surface-mount use on standard FR4 PCBs with tin-plated copper, it delivers 400 mW power handling at Tamb ≤ 25 °C and derates linearly above that temperature, with junction-to-ambient thermal resistance of 340 K/W and junction-to-solder-point resistance of 130 K/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.43 V to 2.63 V at IZ = 5 mA - defines precise clamping threshold for 2.4 V nominal regulation |
| Tolerance | ±2 % - ensures tight voltage matching across production lots without post-assembly trimming |
| Differential Resistance (rdif) | 1000 Ω max at IZ = 0.5 mA - limits regulation error under light-load current variation |
| Reverse Current (IR) | 50 µA max at VR = 1.0 V - minimizes standby power loss in battery-backed circuits |
| Temperature Coefficient (SZ) | −1.6 mV/K at IZ = 5 mA - enables predictable thermal drift modeling in analog front-ends |
| Total Power Dissipation (Ptot) | 400 mW at Tamb = 25 °C on FR4 PCB - sets maximum continuous power before thermal derating applies |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA - supports use as forward-biased clamp or ESD protection element |
Pinout & Package
PDZ2.4BZ uses the SOD323 (SC-76) surface-mount plastic package - a 2-pin, 1.35 mm × 0.8 mm footprint with 0.25 mm lead pitch and cathode indicated by a marking bar on the device body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; reverse-biased during Zener operation; marked side of package |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path for breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| Low-leakage Zener regulation | 50 µA max reverse current at 1.0 V - reduces quiescent current in always-on monitoring circuits |
| Hard breakdown knee | Sharp, well-defined transition into conduction - improves accuracy of low-current voltage references |
| SOD323 package compatibility | Standardized 1.35 mm × 0.8 mm footprint - enables high-density PCB layout and automated reflow assembly |
| Negative temperature coefficient | −1.6 mV/K at 5 mA - allows predictable thermal drift compensation when paired with positive-TC components |
| FR4-optimized thermal design | 340 K/W junction-to-ambient resistance - supports reliable operation without heatsinking in consumer-grade PCBs |
Applications
| Power Supply Rail Clamping | Sensor Bias Reference |
|---|---|
|
Use Scenario: Protecting microcontroller I/O pins from overvoltage transients on 3.3 V or 2.5 V supply rails. IC Role / Device Role / Timing Role: Shunt regulator clamping excess voltage to 2.4 V, diverting surge current away from sensitive inputs. Use Value: Limits peak voltage to within 0.3 V of system rail, preventing latch-up in CMOS input stages without adding series resistance. |
Use Scenario: Providing stable bias voltage for analog sensor amplifiers in industrial temperature transmitters. IC Role / Device Role / Timing Role: Low-drift Zener reference source for op-amp offset nulling and gain-setting networks. Use Value: Delivers <±5 mV stability over −40 °C to +85 °C due to predictable −1.6 mV/K coefficient and low rdif. |
| Low-Power Voltage Monitor | ESD Protection Element |
|
Use Scenario: Detecting brown-out conditions in battery-powered IoT nodes operating near 2.4 V cutoff thresholds. IC Role / Device Role / Timing Role: Reverse-biased Zener triggering comparator input when supply drops below 2.43 V. Use Value: Enables accurate 2.4 V threshold detection with <±50 mV hysteresis via resistor divider feedback. |
Use Scenario: Supplementing TVS diodes in USB data line protection for portable medical devices. IC Role / Device Role / Timing Role: Forward-biased clamp absorbing low-energy ESD pulses (<2 kV HBM) on signal lines. Use Value: Provides 0.9 V forward clamping at 10 mA, limiting transient overshoot before main TVS activates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B2V4 | Same 2.4 V nominal Zener, but ±5 % tolerance and higher rdif (1200 Ω); SOD323 package | Less precise regulation; suitable only where ±5 % voltage tolerance is acceptable | Select when cost sensitivity outweighs regulation accuracy requirements |
| MMSZ4678 | 2.4 V nominal, ±5 % tolerance, 500 mW Ptot, SOD123 package (larger footprint) | Higher power handling but incompatible footprint; requires PCB redesign | Choose only if 500 mW dissipation is mandatory and board space permits SOD123 |
Compared with BZX384-B2V4 and MMSZ4678, PDZ2.4BZ offers tighter ±2 % tolerance and lower dynamic impedance in the same compact SOD323 package - making it optimal for precision low-power references where board area and voltage accuracy are constrained.
Availability
PDZ2.4BZ is available at Aetrix Electronics and suitable for voltage reference design, sensor biasing, and low-power rail clamping requiring stable component supply across automotive infotainment modules, industrial sensor nodes, and portable medical diagnostics equipment.
Supply support for PDZ2.4BZ 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 high-volume, high-reliability logic, discrete, and MOSFET solutions, with manufacturing rooted in process control and automotive-grade quality systems.
PDZ2.4BZ belongs to the PDZ-B series of low-power Zener diodes engineered specifically for precision voltage regulation in space-constrained consumer, industrial, and computing applications - emphasizing tight tolerance, low leakage, and SMD manufacturability.
FAQ
What is the maximum reverse current specification for PDZ2.4BZ at 1.0 V?
The maximum reverse current (IR) for PDZ2.4BZ is 50 µA at VR = 1.0 V and Tj = 25 °C. This value is confirmed in Table 8 of the Nexperia datasheet and reflects leakage behavior prior to Zener onset - critical for minimizing standby power in always-on circuits.
Does PDZ2.4BZ have a specified Zener test current?
Yes - the Zener voltage is specified at IZ = 5 mA, with minimum and maximum values of 2.43 V and 2.63 V respectively. This test condition is explicitly defined in Table 8 and used for all VZ, rdif, and SZ measurements in the characteristics section.
Can PDZ2.4BZ be used in forward-bias mode?
Yes - PDZ2.4BZ has a forward voltage (VF) of ≤0.9 V at IF = 10 mA and ≤1.1 V at IF = 100 mA, per Tables 1 and 7. It is routinely applied as a forward clamp in ESD protection schemes or as a low-drop rectifier in ultra-low-voltage signal paths.
Is the SOD323 package of PDZ2.4BZ compatible with standard reflow profiles?
Yes - Nexperia specifies compatibility with standard Pb-free reflow soldering per J-STD-020, including peak temperatures up to 260 °C. The recommended footprint (Figure 9) uses 0.6 mm × 0.5 mm solder lands with 0.25 mm solder mask clearance, validated for high-yield assembly on FR4 boards.
PDZ2.4BZ 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):
- 2.4 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 1000 Ohms
- Current - Reverse Leakage @ Vr:
- 50 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
PDZ2.4BZ FAQ
1.How can I place an order for PDZ2.4BZ through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ2.4BZ 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 PDZ2.4BZ reliable?
The price and inventory of PDZ2.4BZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDZ2.4BZ is usually 5 days.
3.What payment methods are accepted for PDZ2.4BZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ2.4BZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ2.4BZ?
PDZ2.4BZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ2.4BZ 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 PDZ2.4BZ?
For technical support, including PDZ2.4BZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ2.4BZ requirements.
6.How does Aetrix verify that PDZ2.4BZ is sourced from the original manufacturer or authorized distributors?
All PDZ2.4BZ 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 PDZ2.4BZ meets industry standards.
7.What is the process for return or replacement of PDZ2.4BZ?
All PDZ2.4BZ units undergo pre-shipment inspection (PSI). If there is an issue with PDZ2.4BZ, 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 PDZ2.4BZ part is unused and in its original packaging.
Return procedure for PDZ2.4BZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDZ2.4BZ Tags
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