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Nexperia USA Inc. PZU9.1B2A,115
- Part No.:
- PZU9.1B2A,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PZU9.1B2A,115.pdf
- Description:
- DIODE ZENER 9.1V 320MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:1,140
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Product details
Overview
PZU9.1B2A,115 from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 9.1 V nominal working voltage, 320 mW total power dissipation at 25 °C ambient, and 40 W non-repetitive peak reverse power. It delivers low dynamic impedance (60 Ω max at IZ = 5 mA), 10 nA reverse current at IZ = 0.5 mA, and optimized leakage for fast switching in precision reference circuits.
For engineers reviewing the PZU9.1B2A,115 datasheet, PZU9.1B2A,115 pinout, PZU9.1B2A,115 application, or PZU9.1B2A,115 equivalent, this device serves as a stable, surface-mount voltage reference in low-power analog monitoring, overvoltage clamping, and biasing networks where tight tolerance and low noise are critical.
Technical Context
This Zener diode operates in reverse breakdown to maintain a stable 9.1 V reference across load and supply variations, with a temperature coefficient of +5.5 mV/K at IZ = 5 mA and typical junction-to-solder-point thermal resistance of 55 K/W. Its hard breakdown knee and intentional minor leakage rise support clean transient response in signal conditioning paths.
The SOD323 package enables high-density PCB layouts while maintaining thermal performance under pulsed surge conditions up to 100 µs, with validated non-repetitive peak reverse current of 120 A at Tj = 25 °C prior to surge - enabling robust protection in compact DC-DC feedback loops.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 9.1 V ±2 % (B2 tolerance); ensures precise regulation in 9 V rail monitoring and reference generation |
| Differential Resistance | ≤60 Ω at IZ = 5 mA; minimizes output voltage variation under load current changes |
| Reverse Current | ≤10 nA at IZ = 0.5 mA; enables ultra-low standby power in battery-backed circuits |
| Total Power Dissipation | 320 mW at Tamb ≤ 25 °C on FR4 PCB; defines continuous DC operating limit in standard layout |
| Non-repetitive Peak Power | 40 W at tp = 100 µs; supports transient overvoltage suppression without failure |
| Junction Temperature | −55 °C to +150 °C; allows operation in industrial and automotive-adjacent environments |
| Package | SOD323 (SC-76); 1.7 mm × 1.25 mm × 0.95 mm footprint for space-constrained SMT designs |
Pinout & Package
SOD323 (SC-76) plastic surface-mount package with 2 leads, 1.3 mm pitch, and cathode marked by a bar on the body.
| 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 |
|---|---|
| ±2 % Zener voltage tolerance (B2 series) | Enables tighter regulation than ±5 % parts, reducing calibration overhead in precision analog systems |
| Optimized leakage for fast switching | Intentional minor IR rise improves transient response and reduces noise in feedback paths per AN90031 |
| Low dynamic impedance at low currents | 60 Ω max at 5 mA supports stable reference behavior even in microamp-level bias networks |
| Hard breakdown knee | Ensures sharp, predictable turn-on without soft saturation-critical for accurate clamping thresholds |
| FR4-compatible thermal design | 255 K/W junction-to-ambient (1 cm² cathode pad) enables reliable derating without heatsinks |
Applications
| Power Supply Feedback Reference | Overvoltage Clamp in Sensor Interface |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback converters via optocoupler-coupled feedback loop. IC Role / Device Role / Timing Role: Provides stable 9.1 V reference to TL431-like shunt regulator input, defining primary-side voltage setpoint. Use Value: ±2 % tolerance eliminates need for post-production trimming; low rdif maintains regulation accuracy across line/load transients. |
Use Scenario: Protecting ADC input pins from ESD-induced voltage spikes in industrial 4–20 mA transmitter modules. IC Role / Device Role / Timing Role: Acts as bidirectional clamp between signal line and ground, limiting voltage to ±9.1 V during surge events. Use Value: 40 W peak power rating absorbs 100 µs surges without degradation; SOD323 size fits near connector entry points. |
| Battery Voltage Monitor Threshold | Low-Power Bias Generator |
Use Scenario: Detecting end-of-charge condition in Li-ion battery packs using comparator-based cutoff logic. IC Role / Device Role / Timing Role: Supplies fixed 9.1 V reference to comparator non-inverting input, triggering shutdown at 4.2 V/cell × 2.16 = ~9.07 V. Use Value: 10 nA reverse current extends battery life in always-on monitoring circuits; ±2 % tolerance ensures consistent trip point across units. |
Use Scenario: Generating stable bias for op-amp input stages in portable medical sensor front-ends. IC Role / Device Role / Timing Role: Functions as passive voltage reference in high-impedance divider network feeding op-amp reference pin. Use Value: Hard breakdown knee prevents drift during low-current operation; 60 Ω rdif limits error contribution to <0.06 % of full-scale output. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B9V1,115 | Same SOD323 package, ±2 % tolerance, but higher rdif (100 Ω max) and higher IR (500 nA at 0.5 mA) | Less suitable for ultra-low-power biasing; acceptable for general-purpose clamping where leakage is not critical | Select when cost priority outweighs leakage and impedance requirements |
| MMSZ5240B-TP | SOD-123 package (larger), ±5 % tolerance, 100 Ω rdif, 100 nA IR at 1 mA | Requires more board area; looser tolerance increases calibration burden in precision references | Choose only if legacy SOD-123 footprint compatibility is mandatory |
Compared with BZX384-B9V1,115 and MMSZ5240B-TP, PZU9.1B2A,115 offers superior low-current stability (10 nA IR vs. ≥100 nA) and tighter regulation (±2 % vs. ±5 % or higher rdif), making it optimal for battery-sensitive and high-accuracy analog subsystems.
Availability
PZU9.1B2A,115 is available at Aetrix Electronics and suitable for power supply feedback reference, overvoltage clamp in sensor interface, and battery voltage monitor threshold applications requiring stable component supply and guaranteed long-term sourcing.
Supply support for PZU9.1B2A,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 delivering high-performance, reliable discrete, logic, and MOSFET devices with focus on efficiency, miniaturization, and robustness.
The PZUxBA series targets high-density, low-power voltage regulation and protection in consumer, industrial, and communications equipment, emphasizing tight tolerance, low leakage, and fast transient response in miniature packages.
FAQ
What is the maximum continuous reverse current for PZU9.1B2A,115 at 25 °C ambient?
The device has no specified maximum continuous reverse current; instead, its DC operation is limited by total power dissipation of 320 mW at Tamb ≤ 25 °C. At 9.1 V Zener voltage, this corresponds to a maximum steady-state reverse current of approximately 35 mA before thermal derating applies.
Does PZU9.1B2A,115 require a heatsink in standard FR4 PCB mounting?
No heatsink is required. With Rth(j-a) = 255 K/W on standard FR4 (single-sided copper, tin-plated), the junction-to-ambient temperature rise at 320 mW is ~82 K - well within the 150 °C max junction rating when ambient stays below 68 °C. Derating begins above 25 °C ambient per the datasheet curve.
How does the B2 tolerance series differ from B1 or B3 in the PZUxBA family?
B2 denotes ±2 % tolerance at 25 °C, positioned between B1 (tighter ±2 % with tighter binning) and B3 (±2 % with extended temperature stability). For PZU9.1B2A,115, B2 guarantees 8.92–9.28 V at IZ = 5 mA and Tj = 25 °C, with SZ = +5.5 mV/K ensuring predictable drift over temperature.
Can PZU9.1B2A,115 be used in place of a 9.1 V Zener with ±5 % tolerance?
Yes - it is pin- and form-factor compatible with ±5 % variants (e.g., PZU9.1BA), but provides tighter regulation (±2 % vs. ±5 %), lower dynamic impedance (60 Ω vs. up to 100 Ω), and lower leakage (10 nA vs. typically 100–500 nA), directly improving accuracy and power efficiency without layout change.
PZU9.1B2A,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 9.1 V
- Tolerance:
- ±2%
- Power - Max:
- 320 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 6 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
PZU9.1B2A,115 FAQ
1.How can I place an order for PZU9.1B2A,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU9.1B2A,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 PZU9.1B2A,115 reliable?
The price and inventory of PZU9.1B2A,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU9.1B2A,115 is usually 5 days.
3.What payment methods are accepted for PZU9.1B2A,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU9.1B2A,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU9.1B2A,115?
PZU9.1B2A,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU9.1B2A,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 PZU9.1B2A,115?
For technical support, including PZU9.1B2A,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU9.1B2A,115 requirements.
6.How does Aetrix verify that PZU9.1B2A,115 is sourced from the original manufacturer or authorized distributors?
All PZU9.1B2A,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 PZU9.1B2A,115 meets industry standards.
7.What is the process for return or replacement of PZU9.1B2A,115?
All PZU9.1B2A,115 units undergo pre-shipment inspection (PSI). If there is an issue with PZU9.1B2A,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 PZU9.1B2A,115 part is unused and in its original packaging.
Return procedure for PZU9.1B2A,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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