My Inquiry
My Account
Nexperia USA Inc. PDZ9.1B,115
- Part No.:
- PDZ9.1B,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PDZ9.1B,115.pdf
- Description:
- DIODE ZENER 9.1V 400MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:6,237
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PDZ9.1B,115 from Nexperia is a single Zener diode designed for low-power voltage regulation in surface-mounted applications, with a nominal Zener voltage of 9.1 V (8.85–9.23 V at IZ = 5 mA), ±2 % tolerance, 60 Ω maximum differential resistance at 5 mA, and 0.5 µA maximum reverse leakage at 7.3 V. It operates in the SOD323 (SC-76) package and supports general-purpose clamping and reference functions in power supply feedback paths and overvoltage protection circuits.
For engineers reviewing the PDZ9.1B,115 datasheet, PDZ9.1B,115 pinout, PDZ9.1B,115 application, or PDZ9.1B,115 equivalent, key selection criteria include Zener voltage accuracy, dynamic impedance at regulation current, thermal resistance (Rth(j-a) = 340 K/W), cathode/anode polarity marking, and SOD323 footprint compatibility with automated reflow assembly.
Technical Context
This Zener diode provides stable reverse-bias voltage regulation via controlled avalanche breakdown, optimized for low-current operation (IZ = 5 mA typical) with hard knee characteristics and minimal temperature drift (SZ = +5.5 mV/K). Its design targets precision biasing and signal-level clamping where tight voltage control and low leakage are required.
The device exhibits forward voltage ≤ 0.9 V at 10 mA and ≤ 1.1 V at 100 mA, supports non-repetitive peak reverse current up to 3.5 A (tp = 100 µs), and maintains junction temperature up to +150 °C with derated power dissipation above +25 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 8.85–9.23 V at IZ = 5 mA - defines precise regulation point for feedback or reference circuits |
| Differential Resistance rdif | ≤ 60 Ω at IZ = 5 mA - ensures minimal output voltage variation under load changes |
| Reverse Leakage IR | ≤ 0.5 µA at VR = 7.3 V - enables low-power standby operation without significant quiescent loss |
| Power Dissipation Ptot | 400 mW at Tamb ≤ 25 °C - sets maximum continuous thermal budget on standard FR4 PCB |
| Thermal Resistance Rth(j-a) | 340 K/W - determines junction-to-ambient temperature rise per watt, critical for thermal margining |
| Forward Voltage VF | ≤ 0.9 V at IF = 10 mA - confirms low conduction loss when used in forward-biased protection roles |
| Package | SOD323 (SC-76) - 2-pin surface-mount outline with 1.35–1.6 mm body length and cathode bar marking |
Pinout & Package
The PDZ9.1B,115 is housed in a plastic SOD323 (SC-76) surface-mount package with two terminals: anode (A) and cathode (K). The cathode is marked by a visible bar on the device body. Mounting follows JEDEC-standard solder land patterns for reflow (Fig. 9) or wave (Fig. 10) processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; reverse-bias terminal where Zener breakdown occurs |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes bias path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low dynamic impedance | 60 Ω max at 5 mA - improves regulation stability across varying load currents |
| Hard breakdown knee | Sharp transition into conduction - reduces ambiguity in turn-on threshold for precision clamping |
| Tight voltage tolerance | ±2 % - eliminates need for post-production trimming in mid-accuracy reference designs |
| Low leakage current | 0.5 µA max at 7.3 V - preserves battery life and signal integrity in high-impedance nodes |
| SOD323 footprint | Standardized 1.35 × 0.85 mm outline - ensures compatibility with high-density PCB layouts and pick-and-place automation |
Applications
| Power Supply Feedback | Overvoltage Clamp |
|---|---|
|
Use Scenario: Stabilizing output voltage in linear regulators or switching converter feedback loops using resistive divider networks. IC Role / Device Role / Timing Role: Zener reference element providing fixed voltage threshold to error amplifier input. Use Value: Enables ±2 % output regulation accuracy without external trim components due to tight VZ tolerance and low rdif. |
Use Scenario: Protecting microcontroller I/O pins or analog sensor inputs from transient overvoltage events. IC Role / Device Role / Timing Role: Shunt clamping device that conducts excess energy to ground when input exceeds 9.1 V. Use Value: Limits peak voltage to ≤9.23 V with <0.5 µA leakage below clamp threshold, preserving signal fidelity during normal operation. |
| Reference Voltage Source | Signal Level Shifting |
|
Use Scenario: Generating a stable 9.1 V reference for ADC biasing or comparator thresholds in industrial sensors. IC Role / Device Role / Timing Role: Passive voltage reference node supplying known potential to analog circuitry. Use Value: Delivers consistent 9.1 V with +5.5 mV/K temperature coefficient-suitable for non-critical references where drift compensation is not required. |
Use Scenario: Translating logic-level signals between 3.3 V and 5 V domains using simple resistor-Zener networks. IC Role / Device Role / Timing Role: Clamping diode establishing upper voltage limit on translated signal path. Use Value: Provides sharp 9.1 V ceiling with hard knee behavior, preventing overshoot beyond safe logic thresholds during fast edge transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584-C9V1 | Same 9.1 V nominal, ±5 % tolerance, higher Ptot = 500 mW, SOD523 package (smaller footprint) | Higher power handling but tighter layout constraints; less thermal margin on FR4 | Select when board space is critical and >400 mW dissipation is needed |
| MMSZ5240B | 9.1 V nominal, ±5 % tolerance, Ptot = 350 mW, SOD123 package (larger, easier hand-soldering) | Lower power rating and looser voltage tolerance; better manufacturability for prototyping | Select for cost-sensitive, non-precision applications where manual assembly is used |
Compared with PDZ9.1B,115, BZX584-C9V1 offers higher power but demands tighter layout control, while MMSZ5240B trades voltage accuracy and thermal performance for ease of assembly and lower unit cost-making PDZ9.1B,115 optimal for production-grade SMD designs requiring ±2 % regulation and proven FR4 thermal behavior.
Availability
PDZ9.1B,115 is available at Aetrix Electronics and suitable for power supply feedback, overvoltage clamp, and reference voltage source applications requiring stable component supply, consistent Zener voltage tolerance, and reliable SOD323 mounting performance.
Supply support for PDZ9.1B,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 automotive-grade robustness.
The PDZ-B series targets low-power, high-accuracy voltage regulation in space-constrained consumer, industrial, and computing systems-emphasizing tight tolerance, low leakage, and standardized SMD packaging for automated manufacturing.
FAQ
What is the maximum continuous reverse current the PDZ9.1B,115 can sustain at 25 °C ambient?
The PDZ9.1B,115 does not specify a maximum continuous reverse current rating; its regulation is defined at IZ = 5 mA, and total power dissipation is limited to 400 mW. Sustained operation above ~44 mA (400 mW ÷ 9.1 V) risks exceeding Ptot and thermal limits unless board-level cooling is enhanced.
How is cathode polarity identified on the PDZ9.1B,115 package?
The cathode is unambiguously marked by a visible bar printed on the top surface of the SOD323 body-aligned with Pin 1 per Table 2 and Figure 8. This marking matches the "K" designation in the pinning diagram and corresponds to the terminal connected to the stripe side in schematic symbols.
Does the PDZ9.1B,115 meet automotive qualification standards?
No-the PDZ9.1B,115 is not automotive-qualified. Nexperia explicitly states in Section 14 that unless designated as automotive qualified in the data sheet, products are unsuitable for safety-critical or life-support systems, and this part carries no AEC-Q200 or similar certification.
Can PDZ9.1B,115 be used in parallel for higher power dissipation?
Parallel connection is not recommended due to mismatched Zener voltages and thermal runaway risk. Even with ±2 % tolerance, slight VZ differences cause unequal current sharing-leading one device to dominate conduction and overheat. Use a single higher-rated Zener or active regulation instead.
PDZ9.1B,115 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):
- 9.1 V
- Tolerance:
- ±2%
- Power - Max:
- 400 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:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
PDZ9.1B,115 FAQ
1.How can I place an order for PDZ9.1B,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ9.1B,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 PDZ9.1B,115 reliable?
The price and inventory of PDZ9.1B,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDZ9.1B,115 is usually 5 days.
3.What payment methods are accepted for PDZ9.1B,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ9.1B,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ9.1B,115?
PDZ9.1B,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ9.1B,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 PDZ9.1B,115?
For technical support, including PDZ9.1B,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ9.1B,115 requirements.
6.How does Aetrix verify that PDZ9.1B,115 is sourced from the original manufacturer or authorized distributors?
All PDZ9.1B,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 PDZ9.1B,115 meets industry standards.
7.What is the process for return or replacement of PDZ9.1B,115?
All PDZ9.1B,115 units undergo pre-shipment inspection (PSI). If there is an issue with PDZ9.1B,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 PDZ9.1B,115 part is unused and in its original packaging.
Return procedure for PDZ9.1B,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDZ9.1B,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…
