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Nexperia USA Inc. PZU5.1B1A,115
- Part No.:
- PZU5.1B1A,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PZU5.1B1A,115.pdf
- Description:
- DIODE ZENER 5.1V 320MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:382
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Product details
Overview
PZU5.1B1A,115 from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 5.1 V nominal working voltage at 5 mA, with 250 Ω maximum differential resistance, 2 nA reverse current at 0.5 mA, and 0.3 mV/K temperature coefficient - used for precision low-power voltage reference and overvoltage clamping in sensor signal conditioning circuits.
For engineers reviewing the PZU5.1B1A,115 datasheet, PZU5.1B1A,115 pinout, PZU5.1B1A,115 application, or PZU5.1B1A,115 equivalent, key selection criteria include tight voltage tolerance (±2 %), low dynamic impedance at low bias currents, hard breakdown knee, and compatibility with high-density SMT layouts on FR4 PCBs.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain stable reference voltage under varying load and temperature conditions. Its design emphasizes low leakage (2 nA at IZ = 0.5 mA), minimal temperature drift (0.3 mV/K), and fast transient response due to optimized junction capacitance (300 pF at 0 V).
The device features a hard breakdown knee and very low dynamic impedance (250 Ω max at IZ = 5 mA), enabling accurate regulation in low-current applications such as analog front-end biasing and ADC reference stabilization - distinct from general-purpose Zeners with softer knees or higher rdif.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 5.1 V at IZ = 5 mA - defines precise regulation point for low-power reference circuits |
| Voltage Tolerance | ±2 % (B1 series) - ensures tight binning for critical voltage-setting applications |
| Differential Resistance | ≤250 Ω at IZ = 5 mA - maintains stable output under small load variations |
| Reverse Current | 2 nA at IZ = 0.5 mA - enables ultra-low power standby operation without significant leakage error |
| Temperature Coefficient | +0.3 mV/K - near-zero TC minimizes drift across -55 °C to +150 °C ambient range |
| Package | SOD323 (SC-76), 1.7 × 1.25 × 0.95 mm - supports high-density surface-mount assembly on standard FR4 PCBs |
| Total Power Dissipation | 320 mW at Tamb ≤ 25 °C - limits thermal rise in compact board layouts |
Pinout & Package
SOD323 (SC-76) plastic surface-mount package with cathode marked by bar; optimized for reflow/wave soldering per IPC-7095 guidelines on FR4 PCBs with tin-plated copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output node; marking bar identifies this terminal for correct orientation during placement |
| 2 | Anode | Connected to ground or lower-potential rail; completes reverse-bias path for Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| Hard breakdown knee | Enables sharp, predictable turn-on at 5.1 V - critical for accurate threshold detection in protection circuits |
| Very low leakage current | 2 nA at 0.5 mA bias - preserves battery life and avoids loading errors in high-impedance sensor interfaces |
| Tight voltage tolerance | ±2 % (B1 grade) - eliminates need for post-assembly trimming in production calibration |
| Low dynamic impedance | 250 Ω max at 5 mA - sustains regulation accuracy despite ±10 % supply ripple or load transients |
| Optimized thermal resistance | Rth(j-sp) = 55 K/W - allows reliable operation up to 150 °C junction temperature with minimal heatsinking |
Applications
| Industrial Sensor Signal Conditioning | USB Port Overvoltage Clamp |
|---|---|
Use Scenario: Stabilizing reference voltage for 12-bit ADC inputs in temperature/humidity sensors operating from 3.3 V rails. IC Role / Device Role / Timing Role: Zener diode provides fixed 5.1 V reference to ADC's internal voltage reference buffer, compensating for LDO dropout variation. Use Value: ±2 % tolerance and 0.3 mV/K TC ensure <±0.5 LSB error over -40 °C to +85 °C industrial range without software calibration. |
Use Scenario: Protecting USB 2.0 data lines (D+/D−) against ESD-induced voltage spikes exceeding 5.5 V. IC Role / Device Role / Timing Role: Acts as bidirectional clamp between D+ and ground, diverting surge current before IC input structures fail. Use Value: Hard breakdown knee and 40 W non-repetitive peak power rating absorb IEC 61000-4-2 Level 4 (15 kV air) surges without degradation. |
| Low-Power IoT Node Voltage Reference | Programmable Logic Supply Rail Clamp |
Use Scenario: Generating stable bias for op-amps in battery-powered environmental monitoring nodes with 10-year lifetime targets. IC Role / Device Role / Timing Role: Provides 5.1 V reference to rail-to-rail comparator driving wake-up logic, powered from coin-cell source. Use Value: 2 nA reverse current prevents >1 µA parasitic drain - extending shelf life beyond 5 years at room temperature. |
Use Scenario: Preventing FPGA I/O bank damage when external 5 V peripherals drive signals into 3.3 V logic domains. IC Role / Device Role / Timing Role: Clamps overshoot on 3.3 V supply rail caused by back-driving, limiting voltage to 5.1 V + VF. Use Value: 250 Ω dynamic impedance ensures clamping occurs within 10 ns of overvoltage onset, meeting Xilinx/Intel I/O integrity specs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B5V1,115 | Same SOD323 package, ±2 % tolerance, but 600 Ω max rdif at 5 mA and 500 nA IR at 0.5 mA | Higher impedance and leakage reduce accuracy in precision reference use cases | Acceptable for cost-sensitive clamping where regulation stability is secondary |
| MMSZ5231B-7-F | SOD-123 package (larger footprint), ±5 % tolerance, 17 Ω rdif at 20 mA - not tested at low currents | Loose tolerance and different test current limit usability in low-IZ designs | Preferred only when higher power handling (500 mW) outweighs size and accuracy constraints |
Compared with BZX384-B5V1,115 and MMSZ5231B-7-F, PZU5.1B1A,115 delivers superior low-current regulation fidelity (250 Ω rdif, 2 nA IR) in the smallest SMD outline - making it optimal for space-constrained, battery-operated systems requiring long-term voltage stability.
Availability
PZU5.1B1A,115 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, USB port overvoltage protection, low-power IoT node voltage reference, and programmable logic supply rail clamp applications requiring stable component supply across multi-year production cycles.
Supply support for PZU5.1B1A,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, with leadership in automotive-qualified and industrial-grade components.
The PZUxBA series belongs to Nexperia's general-purpose Zener regulator portfolio, engineered specifically for precision low-power voltage reference and clamping in space-constrained SMT designs - emphasizing tight tolerance, low leakage, and hard breakdown characteristics.
FAQ
What is the maximum non-repetitive peak reverse power dissipation for PZU5.1B1A,115?
The device supports 40 W non-repetitive peak reverse power dissipation for 100 µs square-wave pulses at Tj = 25 °C prior to surge, validated per IEC 60134 absolute maximum ratings - enabling robust ESD and transient suppression without derating in typical PCB layouts.
How does the ±2 % tolerance (B1) affect circuit calibration requirements?
The ±2 % tolerance eliminates need for post-manufacture voltage trimming in most applications, as the 4.998–5.202 V range at 5 mA meets MIL-STD-883 Class B accuracy requirements for industrial reference circuits without software compensation or hardware adjustment.
Can PZU5.1B1A,115 be used in place of a 5 V TTL logic clamp?
Yes - its 5.1 V nominal Zener voltage, hard breakdown knee, and 300 pF capacitance ensure fast clamping response (<10 ns) for 5 V logic overshoot events while maintaining signal integrity on high-speed buses like SPI or I²C, provided forward current remains below 200 mA.
What is the thermal resistance from junction to solder point (Rth(j-sp)) and why does it matter?
Rth(j-sp) is 55 K/W, measured at the cathode solder joint - this low value enables efficient heat transfer from the silicon die to the PCB copper, allowing continuous operation at full 320 mW dissipation without exceeding 150 °C junction temperature on standard FR4 boards.
PZU5.1B1A,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):
- 5.1 V
- Tolerance:
- ±2%
- Power - Max:
- 320 mW
- Impedance (Max) (Zzt):
- 60 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 1.5 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
PZU5.1B1A,115 FAQ
1.How can I place an order for PZU5.1B1A,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU5.1B1A,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 PZU5.1B1A,115 reliable?
The price and inventory of PZU5.1B1A,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU5.1B1A,115 is usually 5 days.
3.What payment methods are accepted for PZU5.1B1A,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU5.1B1A,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU5.1B1A,115?
PZU5.1B1A,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU5.1B1A,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 PZU5.1B1A,115?
For technical support, including PZU5.1B1A,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU5.1B1A,115 requirements.
6.How does Aetrix verify that PZU5.1B1A,115 is sourced from the original manufacturer or authorized distributors?
All PZU5.1B1A,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 PZU5.1B1A,115 meets industry standards.
7.What is the process for return or replacement of PZU5.1B1A,115?
All PZU5.1B1A,115 units undergo pre-shipment inspection (PSI). If there is an issue with PZU5.1B1A,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 PZU5.1B1A,115 part is unused and in its original packaging.
Return procedure for PZU5.1B1A,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PZU5.1B1A,115 Tags
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BZT52C5V6T-7
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MMSZ5231B-7-F
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onsemi
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MMSZ5245BS-7-F
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MMSZ4682T1G
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BZT52C15S-7-F
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MM5Z5V1ST1G
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