My Inquiry
My Account
Nexperia USA Inc. PZU9.1B1A,115
- Part No.:
- PZU9.1B1A,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PZU9.1B1A,115.pdf
- Description:
- DIODE ZENER 9.1V 320MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:8,715
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PZU9.1B1A,115 from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 9.1 V nominal working voltage at 5 mA, with 60 Ω maximum differential resistance, 10 nA reverse current at 0.5 mA, and 5.5 A non-repetitive peak reverse current. It delivers stable voltage reference in low-power analog monitoring circuits.
For engineers reviewing the PZU9.1B1A,115 datasheet, PZU9.1B1A,115 pinout, PZU9.1B1A,115 application, or PZU9.1B1A,115 equivalent, key selection criteria include tight voltage tolerance, low dynamic impedance at regulation current, thermal resistance to solder point (255 K/W), and compatibility with standard FR4 PCB reflow footprints.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain precise DC voltage under varying load and temperature conditions. Its hard breakdown knee and intentional minor leakage rise support fast transient response and reduced noise in feedback paths.
Designed for surface-mounted use on single-sided tin-plated FR4 boards, it sustains 320 mW total power dissipation at 25 °C ambient and withstands 40 W non-repetitive surge pulses (100 µs square wave) without degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 9.1 V at IZ = 5 mA - defines primary regulation point in feedback networks |
| Voltage Tolerance | ±2 % (B1 series) - ensures tight output stability across production batches |
| Differential Resistance | ≤60 Ω at IZ = 5 mA - minimizes output voltage shift under load variation |
| Reverse Current | ≤10 nA at VR = 7.5 V - enables ultra-low standby power in battery-backed circuits |
| Non-repetitive Peak Current | 5.5 A at tp = 100 µs - provides robust ESD/transient immunity without external clamping |
| Total Power Dissipation | 320 mW at Tamb ≤ 25 °C - sets maximum continuous DC bias capability on standard PCB |
| Thermal Resistance j-sp | 255 K/W - determines junction-to-solder-point temperature rise during steady-state operation |
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 |
| 2 | Anode | Connected to ground or lower-potential rail; completes reverse-bias path |
Key Features
| Feature | Design Value |
|---|---|
| Low dynamic impedance at low current | 60 Ω at 5 mA enables stable regulation even in micro-power sensor interfaces |
| Hard breakdown knee | Sharp transition into conduction improves accuracy of voltage threshold detection |
| Optimized leakage for noise reduction | Intentional minor IR rise suppresses high-frequency oscillation in LDO feedback loops |
| Small-outline SMD package | SOD323 footprint supports high-density layout in space-constrained IoT modules |
Applications
| Power Supply Reference | Overvoltage Protection |
|---|---|
Use Scenario: Providing stable 9.1 V reference for adjustable DC-DC converter feedback divider. IC Role / Device Role / Timing Role: Voltage reference element defining output setpoint in closed-loop regulation. Use Value: ±2 % tolerance and 60 Ω dynamic impedance ensure <±1 % output deviation across line/load/temperature. |
Use Scenario: Clamping transient surges on 9 V rail in industrial control I/O modules. IC Role / Device Role / Timing Role: Shunt protection device diverting excess energy during ESD or inductive kick events. Use Value: 5.5 A peak current rating handles 40 W surges without failure, eliminating need for TVS co-location. |
| Sensor Biasing | ADC Input Protection |
Use Scenario: Biasing precision temperature sensor ICs requiring stable excitation voltage. IC Role / Device Role / Timing Role: Low-noise voltage source establishing sensor operating point. Use Value: Optimized leakage profile reduces broadband noise coupling into sensitive analog front-ends. |
Use Scenario: Limiting input voltage to 12-bit SAR ADC channels in data acquisition systems. IC Role / Device Role / Timing Role: Input clamp preventing overvoltage damage during hot-plug or fault conditions. Use Value: 9.1 V breakdown threshold aligns with 10 V full-scale range, preserving measurement headroom while ensuring safety. |
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 (80 Ω) and higher IR (50 nA) | Less suitable for low-noise sensor biasing due to elevated leakage | Prefer when cost sensitivity outweighs noise or impedance requirements |
| MMSZ5240B-TP | SOD-123 package, ±5 % tolerance, 150 Ω rdif, 100 nA IR at 7.6 V | Larger footprint and looser tolerance limit use in precision references | Select only if board layout requires SOD-123 compatibility and ±5 % is acceptable |
Compared with PZU9.1B1A,115, BZX384-B9V1,115 trades lower impedance and leakage for marginally lower unit cost, while MMSZ5240B-TP sacrifices both precision and package size for broader distributor availability-making PZU9.1B1A,115 optimal for compact, low-noise, ±2 % regulation tasks.
Availability
PZU9.1B1A,115 is available at Aetrix Electronics and suitable for power supply reference design, overvoltage protection circuits, and sensor biasing applications requiring stable component supply and consistent parametric performance across production lots.
Supply support for PZU9.1B1A,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 delivering high-performance, reliable discrete, logic, and MOSFET solutions for automotive, industrial, and consumer markets.
This device belongs to the PZUxBA series of general-purpose Zener regulators engineered for precision voltage reference and shunt protection in space-constrained SMD designs.
FAQ
What is the maximum continuous power dissipation for PZU9.1B1A,115 on a standard FR4 PCB?
The total power dissipation is rated at 320 mW when mounted on an FR4 PCB with single-sided copper, tin-plated finish, and standard footprint per datasheet condition [3]. This value drops with rising ambient temperature and is limited by junction temperature not exceeding 150 °C.
How does the B1 tolerance designation affect voltage accuracy at 5 mA test current?
The B1 series guarantees a nominal 9.1 V Zener voltage within ±2 % (8.92 V to 9.28 V) when measured at IZ = 5 mA and Tj = 25 °C. This tighter tolerance than standard B-series (±5 %) improves system-level accuracy in feedback and reference applications.
Can PZU9.1B1A,115 be used in place of a 9 V Zener for microcontroller reset circuitry?
Yes-it provides a stable 9.1 V threshold ideal for supervisory ICs requiring precise brown-out detection. Its low dynamic impedance ensures minimal voltage droop during reset assertion, and its SOD323 footprint fits compact MCU carrier boards.
Is the cathode terminal marked on the physical device, and how is it identified?
Yes-the cathode is unambiguously marked by a visible bar on the top surface of the SOD323 package. Pin 1 (cathode) aligns with this marking, and the simplified outline in the datasheet confirms orientation relative to the bar.
PZU9.1B1A,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):
- 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
PZU9.1B1A,115 FAQ
1.How can I place an order for PZU9.1B1A,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU9.1B1A,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 PZU9.1B1A,115 reliable?
The price and inventory of PZU9.1B1A,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU9.1B1A,115 is usually 5 days.
3.What payment methods are accepted for PZU9.1B1A,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU9.1B1A,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU9.1B1A,115?
PZU9.1B1A,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU9.1B1A,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 PZU9.1B1A,115?
For technical support, including PZU9.1B1A,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU9.1B1A,115 requirements.
6.How does Aetrix verify that PZU9.1B1A,115 is sourced from the original manufacturer or authorized distributors?
All PZU9.1B1A,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 PZU9.1B1A,115 meets industry standards.
7.What is the process for return or replacement of PZU9.1B1A,115?
All PZU9.1B1A,115 units undergo pre-shipment inspection (PSI). If there is an issue with PZU9.1B1A,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 PZU9.1B1A,115 part is unused and in its original packaging.
Return procedure for PZU9.1B1A,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PZU9.1B1A,115 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
