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Nexperia USA Inc. PZU24B1A,115
- Part No.:
- PZU24B1A,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PZU24B1A,115.pdf
- Description:
- DIODE ZENER 24V 320MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:4,684
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Product details
Overview
PZU24B1A,115 from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 24 V nominal working voltage, 320 mW total power dissipation at 25 °C ambient, and 19 A non-repetitive peak reverse current. It delivers low dynamic impedance (120 Ω max at IZ = 5 mA), tight temperature coefficient (±1.3 mV/K), and reverse leakage ≤30 nA at 0.5 mA, serving as a precision reference in low-power voltage regulation circuits.
For engineers reviewing the PZU24B1A,115 datasheet, PZU24B1A,115 pinout, PZU24B1A,115 application, or PZU24B1A,115 equivalent, this device is selected for stable 24 V reference generation in space-constrained DC-DC feedback paths, sensor biasing networks, and overvoltage clamp stages where ±2 % initial accuracy and thermal stability under 150 °C junction temperature are required.
Technical Context
This Zener diode operates in reverse breakdown mode with a hard knee characteristic optimized for low-noise, fast-switching applications per AN90031. Its differential resistance of ≤120 Ω at 5 mA ensures minimal output voltage variation under load transients.
Designed for surface-mount use on FR4 PCBs with single-sided copper, it exhibits Rth(j-a) = 390 K/W in free air and Rth(j-sp) = 55 K/W to solder point, enabling reliable thermal management in compact consumer and industrial power rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 24 V - precise regulation point for 24 V supply monitoring and clamping |
| Tolerance | ±2 % - B1 series grade enables tighter feedback loop accuracy than ±5 % variants |
| Total Power Dissipation | 320 mW at Tamb ≤ 25 °C - defines maximum continuous DC power handling on standard FR4 |
| Differential Resistance | ≤120 Ω at IZ = 5 mA - ensures <120 mV output shift per 1 mA current change in regulation zone |
| Reverse Current | ≤30 nA at IZ = 0.5 mA - ultra-low leakage preserves battery life in always-on sensing nodes |
| Non-repetitive Peak Current | 19 A at tp = 100 μs - supports transient surge suppression without degradation |
| Junction Temperature | 150 °C max - allows operation in high-temperature industrial enclosures |
Pinout & Package
SOD323 (SC-76) plastic surface-mount package: 1.7 mm × 1.25 mm × 0.95 mm body, 1.3 mm lead pitch, cathode marked by bar.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output node; marking bar identifies this terminal for correct PCB orientation |
| 2 | Anode | Connected to ground or current-limiting resistor; forms reverse-biased junction for Zener action |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance (B1) | Reduces calibration overhead in factory programming of 24 V reference circuits |
| Low dynamic impedance (≤120 Ω) | Maintains regulation stability during 1–10 mA load steps in feedback divider networks |
| Hard breakdown knee | Enables clean turn-on in overvoltage protection without soft saturation artifacts |
| Optimized leakage for noise reduction | Intentional minor IR rise improves RF immunity in EMI-sensitive analog front-ends |
| SOD323 footprint compatibility | Supports automated placement on 0402-class land patterns with standard reflow profiles |
Applications
| Power Supply Feedback Regulation | Sensor Bias Reference |
|---|---|
Use Scenario: Stabilizing output voltage of isolated DC-DC converters via optocoupler-coupled feedback loop. IC Role / Device Role / Timing Role: Zener diode provides precise 24 V reference to TL431 shunt regulator input, setting primary-side duty cycle. Use Value: ±2 % tolerance eliminates need for post-production trimming, reducing test time and cost in high-volume SMPS manufacturing. |
Use Scenario: Providing stable excitation voltage to resistive temperature detectors (RTDs) in HVAC control modules. IC Role / Device Role / Timing Role: Acts as low-drift 24 V bias source for Wheatstone bridge completion, minimizing self-heating error. Use Value: 1.3 mV/K temperature coefficient limits drift to <±300 μV over –40 °C to +85 °C ambient range. |
| Overvoltage Clamp Protection | ADC Reference Stabilization |
Use Scenario: Clamping transient spikes on 24 V CAN bus power rail during load dump events. IC Role / Device Role / Timing Role: Shunts excess energy above 24 V to ground before downstream TVS diodes activate, extending system lifetime. Use Value: 19 A peak current rating handles ISO 7637-2 Pulse 5a surges without parametric shift or failure. |
Use Scenario: Supplying reference voltage to 12-bit SAR ADC in programmable logic controller (PLC) analog input module. IC Role / Device Role / Timing Role: Replaces bulkier IC references in cost-sensitive designs where 0.5 % full-scale error budget permits discrete solution. Use Value: 30 nA reverse leakage prevents loading errors in high-impedance reference buffer inputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C24,115 | ±5 % tolerance, 400 mW Ptot, higher rdif (≤200 Ω), no B1-grade option | Acceptable where calibration is performed post-assembly or where thermal margin exceeds 320 mW | Select when cost sensitivity outweighs initial accuracy requirements and board layout allows larger thermal pad |
| MMSZ5242B-TP | ±5 % tolerance, SOD-123 package (2.7 × 1.6 mm), 500 mW Ptot, 100 nA IR at 0.5 mA | Preferred for higher-power derating needs but sacrifices PCB area efficiency and low-leakage advantage | Choose when legacy SOD-123 footprint compatibility is mandatory and leakage >30 nA is acceptable |
Compared with BZX84-C24,115 and MMSZ5242B-TP, PZU24B1A,115 offers superior initial accuracy and lower leakage in the smallest footprint-critical for miniaturized industrial sensors and dense power modules where calibration headroom and standby current are constrained.
Availability
PZU24B1A,115 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, and IoT sensor nodes requiring stable component supply with guaranteed long-term continuity.
Supply support for PZU24B1A,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 global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, headquartered in Nijmegen, Netherlands.
The PZUxBA series belongs to Nexperia's general-purpose Zener regulator portfolio, engineered specifically for precision voltage reference and clamping in space-constrained, thermally demanding SMD applications across consumer, industrial, and automotive-qualified systems.
FAQ
What is the maximum continuous reverse current for PZU24B1A,115 at 25 °C ambient?
The device is rated for 320 mW total power dissipation at Tamb ≤ 25 °C on standard FR4 PCB. At 24 V Zener voltage, this corresponds to a maximum continuous reverse current of approximately 13.3 mA (320 mW ÷ 24 V). Exceeding this value risks thermal runaway unless board-level heatsinking is enhanced.
Does PZU24B1A,115 meet automotive AEC-Q200 requirements?
No. The PZU24B1A,115 is not AEC-Q200 qualified. Nexperia explicitly states in its legal disclaimers that non-automotive qualified products like this Zener diode are unsuitable for automotive safety-critical or life-support applications. Automotive designs require verified AEC-Q200 parts such as the PZU24B2A variant with extended qualification testing.
How does the B1 tolerance series differ electrically from the B series in the PZUxBA family?
The B1 series guarantees ±2 % Zener voltage tolerance versus ±5 % for the B series, achieved through tighter binning during production. This results in reduced initial error in feedback loops and fewer calibration steps. No other parameters-such as dynamic impedance, leakage, or thermal resistance-are altered between B and B1 grades for the same nominal voltage.
Can PZU24B1A,115 be used in place of a 24 V TVS diode for surge protection?
No. While it handles 19 A non-repetitive surges, the PZU24B1A,115 is not designed for repetitive transient suppression. Its 320 mW steady-state power rating and lack of clamping voltage specification make it unsuitable as a primary TVS. Use dedicated TVS diodes like PESD5V0S1BA for ESD and ISO 10605 compliance; reserve PZU24B1A,115 for precision regulation only.
PZU24B1A,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 24 V
- Tolerance:
- ±2%
- Power - Max:
- 320 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 19 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
PZU24B1A,115 FAQ
1.How can I place an order for PZU24B1A,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU24B1A,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 PZU24B1A,115 reliable?
The price and inventory of PZU24B1A,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU24B1A,115 is usually 5 days.
3.What payment methods are accepted for PZU24B1A,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU24B1A,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU24B1A,115?
PZU24B1A,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU24B1A,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 PZU24B1A,115?
For technical support, including PZU24B1A,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU24B1A,115 requirements.
6.How does Aetrix verify that PZU24B1A,115 is sourced from the original manufacturer or authorized distributors?
All PZU24B1A,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 PZU24B1A,115 meets industry standards.
7.What is the process for return or replacement of PZU24B1A,115?
All PZU24B1A,115 units undergo pre-shipment inspection (PSI). If there is an issue with PZU24B1A,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 PZU24B1A,115 part is unused and in its original packaging.
Return procedure for PZU24B1A,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PZU24B1A,115 Tags
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