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Nexperia USA Inc. PDZ2.4BF
- Part No.:
- PDZ2.4BF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PDZ2.4BF.pdf
- Description:
- DIODE ZENER 2.4V 400MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:9,890
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Product details
Overview
PDZ2.4BF from Nexperia is a single low-power Zener diode in SOD323 (SC-76) package, designed for precision voltage regulation at 2.4 V nominal working voltage with ±2 % tolerance, 50 Ω maximum differential resistance at IZ = 5 mA, and 1000 µA reverse current at VR = 1.0 V, used in compact power rail clamping and reference circuits.
For engineers reviewing the PDZ2.4BF datasheet, PDZ2.4BF pinout, PDZ2.4BF application, or PDZ2.4BF equivalent, this device supports low-current voltage stabilization in space-constrained consumer and industrial PCBs where thermal resistance to solder point (130 K/W) and forward voltage ≤0.9 V at 10 mA are critical selection criteria.
Technical Context
This Zener diode operates in reverse breakdown mode with a hard knee characteristic, enabling stable regulation under low-current conditions (IZ = 0.5 mA to 5 mA). Its temperature coefficient of −1.6 mV/K at IZ = 5 mA indicates negative drift, requiring compensation in precision references.
The device exhibits 450 pF junction capacitance at 1 MHz and 0 V bias, limiting high-frequency bypass use, while its non-repetitive peak reverse current rating of 8.0 A (tp = 100 µs) supports transient overvoltage suppression in low-energy circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage VZ | 2.43 V to 2.63 V at IZ = 5 mA - defines regulation band for 2.4 V nominal rail |
| Differential Resistance rdif | ≤50 Ω at IZ = 5 mA - ensures minimal output voltage shift under load variation |
| Reverse Current IR | ≤1000 µA at VR = 1.0 V - confirms low leakage for standby power integrity |
| Forward Voltage VF | ≤0.9 V at IF = 10 mA - enables efficient anode-cathode conduction during fault conditions |
| Power Dissipation Ptot | 400 mW at Tamb ≤ 25 °C on FR4 PCB - sets maximum continuous thermal budget |
| Junction-to-Solder Thermal Resistance | 130 K/W - determines local board-level thermal rise above solder point |
| Capacitance Cd | 450 pF at f = 1 MHz, VR = 0 V - constrains use in >1 MHz signal path filtering |
Pinout & Package
PDZ2.4BF uses the SOD323 (SC-76) surface-mount plastic package: 1.7 mm × 1.3 mm footprint, 0.95 mm height, cathode marked by a bar on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; reverse-biased terminal during Zener operation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes bias path for breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| Small SMD footprint | SOD323 package enables placement in <1.5 mm² board area, supporting ultra-dense layouts |
| Low dynamic impedance | 50 Ω max at 5 mA ensures <±25 mV regulation error across ±1 mA load step |
| Hard breakdown knee | Sharp transition into conduction improves turn-on predictability in clamp circuits |
| Low leakage at low VR | 1000 µA max at 1.0 V allows use in battery-backed rails without excessive drain |
| Stable temperature coefficient | −1.6 mV/K enables predictable drift modeling for compensated references |
Applications
| USB Port Overvoltage Clamp | Microcontroller Reset Circuit |
|---|---|
Use Scenario: Protects 3.3 V USB data lines from ESD-induced transients exceeding 5 V. IC Role / Device Role / Timing Role: Zener clamps line voltage to 2.4 V + VF, diverting surge current away from PHY IC input. Use Value: Leverages 8.0 A non-repetitive peak current rating and 450 pF capacitance to suppress sub-100 ns spikes without signal distortion. |
Use Scenario: Generates clean 2.4 V reference for RC-based reset timing in low-cost MCU systems. IC Role / Device Role / Timing Role: Provides stable threshold voltage to comparator input, triggering reset when VCC drops below regulation band. Use Value: Uses ±2 % tolerance and 50 Ω dynamic resistance to maintain reset window accuracy within ±15 mV over temperature. |
| IoT Sensor Bias Supply | Industrial Analog Input Protection |
Use Scenario: Supplies regulated 2.4 V bias to analog front-end op-amps in battery-powered environmental sensors. IC Role / Device Role / Timing Role: Acts as shunt regulator, sinking excess current to hold sensor supply rail steady under varying load. Use Value: Delivers 400 mW dissipation headroom and 1000 µA leakage at 1.0 V to extend coin-cell life beyond 3 years. |
Use Scenario: Limits input voltage to 2.4 V before ADC driver stage in 0–10 V industrial analog modules. IC Role / Device Role / Timing Role: Functions as precision crowbar element, clamping overvoltage before signal conditioning circuitry. Use Value: Employs hard breakdown knee and −1.6 mV/K tempco to ensure repeatable trip point across −40 °C to +85 °C ambient. |
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, SOD323 package, but ±5 % tolerance and higher rdif (100 Ω) | Acceptable for non-critical biasing where tighter regulation not required | Select when cost sensitivity outweighs regulation precision needs |
| MMSZ4678 | 2.4 V nominal, SOD123 package (larger), 500 mW Ptot, ±5 % tolerance | Higher power handling suits higher-current clamping but requires 3× board area | Choose when thermal margin >400 mW is mandatory and layout space permits |
Compared with BZX384-B2V4 and MMSZ4678, PDZ2.4BF offers superior regulation precision (±2 % vs. ±5 %), lower dynamic impedance (50 Ω vs. ≥100 Ω), and optimized thermal resistance (130 K/W) for dense layouts-making it preferred for space- and stability-critical 2.4 V reference designs.
Availability
PDZ2.4BF is available at Aetrix Electronics and suitable for USB protection circuits, microcontroller reset generation, IoT sensor bias supplies, and industrial analog input protection requiring stable component supply and tight voltage tolerance.
Supply support for PDZ2.4BF 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 discrete and logic devices, headquartered in Nijmegen, Netherlands.
The PDZ-B series targets general-purpose, low-power voltage regulation in compact SMD designs, emphasizing tight tolerance, low leakage, and robust thermal performance for cost-sensitive consumer and industrial applications.
FAQ
What is the maximum continuous reverse current PDZ2.4BF can sustain without degradation?
PDZ2.4BF is rated for continuous Zener current up to 200 mA per absolute maximum ratings, but practical operation is limited by thermal constraints: at 25 °C ambient on FR4 PCB, 400 mW total power dissipation caps usable IZ to approximately 160 mA (VZ ≈ 2.5 V). Derating applies above 25 °C per Fig. 1's power curve.
Does PDZ2.4BF support reflow soldering, and what footprint is recommended?
Yes, PDZ2.4BF is qualified for lead-free reflow soldering. The recommended footprint per Figure 9 specifies 0.6 mm × 0.5 mm solder lands with 0.95 mm center-to-center spacing, 1.65 mm overall length, and 2.2 mm width for optimal thermal transfer and alignment yield.
How does the −1.6 mV/K temperature coefficient affect long-term voltage reference stability?
At IZ = 5 mA, a −1.6 mV/K coefficient means VZ decreases by 1.6 mV per Kelvin rise. Over a 100 °C range (−40 °C to +60 °C), this yields ~160 mV drift-requiring either temperature compensation or use only in ambient-stable environments for sub-50 mV accuracy.
Can PDZ2.4BF be used in series or parallel configurations for higher voltage or current capability?
No-Zener diodes like PDZ2.4BF must not be paralleled due to mismatched breakdown characteristics causing current hogging. Series connection is possible for higher voltage, but requires individual current-limiting resistors and derating for cumulative power dissipation and thermal coupling effects.
PDZ2.4BF 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
PDZ2.4BF FAQ
1.How can I place an order for PDZ2.4BF through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ2.4BF 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 PDZ2.4BF reliable?
The price and inventory of PDZ2.4BF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDZ2.4BF is usually 5 days.
3.What payment methods are accepted for PDZ2.4BF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ2.4BF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ2.4BF?
PDZ2.4BF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ2.4BF 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 PDZ2.4BF?
For technical support, including PDZ2.4BF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ2.4BF requirements.
6.How does Aetrix verify that PDZ2.4BF is sourced from the original manufacturer or authorized distributors?
All PDZ2.4BF 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 PDZ2.4BF meets industry standards.
7.What is the process for return or replacement of PDZ2.4BF?
All PDZ2.4BF units undergo pre-shipment inspection (PSI). If there is an issue with PDZ2.4BF, 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 PDZ2.4BF part is unused and in its original packaging.
Return procedure for PDZ2.4BF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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