My Inquiry
My Account
Nexperia USA Inc. PZU12B1A,115
- Part No.:
- PZU12B1A,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PZU12B1A,115.pdf
- Description:
- DIODE ZENER 12V 320MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:2,628
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PZU12B1A,115 from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 12 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 (80 Ω max at IZ = 5 mA), tight leakage control (10 nA max at IZ = 0.5 mA), and optimized switching performance per AN90031 - used in precision voltage reference and overvoltage clamp circuits for industrial sensor signal conditioning.
For engineers reviewing the PZU12B1A,115 datasheet, PZU12B1A,115 pinout, PZU12B1A,115 application, or PZU12B1A,115 equivalent, key selection criteria include Zener voltage tolerance (±2 %), differential resistance at low test current, thermal resistance to solder point (255 K/W), and non-repetitive surge capability (9 A peak reverse current at 100 µs).
Technical Context
This Zener diode operates in reverse breakdown mode with a hard knee and intentional minor leakage rise to reduce noise and improve transient response - a design feature confirmed in Application Note AN90031 for fast-switching regulation. Its temperature coefficient is +3.4 mV/K at IZ = 5 mA, enabling stable reference behavior across -55 °C to +150 °C ambient range.
The device uses planar epitaxial construction in a plastic SOD323 package with cathode-marked anisotropic termination. Junction-to-solder-point thermal resistance is 255 K/W on FR4 PCB with 1 cm² cathode pad, supporting reliable operation under pulsed overload conditions up to 40 W for 100 µs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 12 V nominal, ±2 % tolerance (11.76–12.24 V), measured at IZ = 5 mA - ensures precise clamping in feedback loops. |
| Differential Resistance (rdif) | ≤80 Ω at IZ = 5 mA - minimizes output voltage variation under load current changes. |
| Reverse Current (IR) | ≤10 nA at VR = 9.1 V (0.5×VZ) - enables ultra-low standby power in battery-backed circuits. |
| Non-repetitive Peak Reverse Current (IZSM) | 9 A at tp = 100 µs - supports transient overvoltage suppression without degradation. |
| Total Power Dissipation (Ptot) | 320 mW at Tamb ≤ 25 °C on standard FR4 PCB - defines continuous DC bias limit for thermal design. |
| Junction Temperature (Tj) | 150 °C maximum - sets upper boundary for reliability in sealed enclosures or high-ambient environments. |
| Thermal Resistance (Rth(j-sp)) | 255 K/W to solder point - determines temperature rise above PCB trace during sustained conduction. |
Pinout & Package
Package: SOD323 (SC-76), surface-mount plastic case measuring 1.7 mm × 1.25 mm × 0.95 mm, with 1.3 mm lead pitch and cathode bar marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output node; marked by bar on package - reverse-biased terminal during Zener operation. |
| 2 | Anode | Connected to ground or lower-potential rail - completes current path during breakdown conduction. |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance (B1 series) | Enables tighter regulation than ±5 % variants - critical for analog reference accuracy in 12 V supply monitoring. |
| Optimized leakage profile per AN90031 | Intentional minor IR increase improves switching speed and reduces broadband noise in clamp applications. |
| Low differential impedance (80 Ω max) | Maintains stable clamping voltage across ±1 mA load current shifts - essential for feedback stability in LDOs. |
| SOD323 footprint compatibility | Supports high-density PCB layouts with 0.6 mm solder land width - compatible with standard reflow profiles per Fig. 10. |
| 150 °C junction rating | Allows operation in automotive under-hood or industrial motor drive environments without derating below 105 °C ambient. |
Applications
| Industrial Sensor Reference | USB Port Overvoltage Clamp |
|---|---|
Use Scenario: Providing stable 12 V reference for RTD bridge excitation in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown as two-terminal shunt voltage reference. Use Value: ±2 % tolerance and 80 Ω rdif ensure <±12 mV drift over 0–10 mA load variation, meeting IEC 61000-4-5 surge immunity requirements. |
Use Scenario: Clamping transient surges on USB VBUS line during hot-plug events in embedded host controllers. IC Role / Device Role / Timing Role: Passive shunt protector absorbing ESD and inductive kickback energy before IC damage occurs. Use Value: 9 A IZSM at 100 µs handles IEC 61000-4-2 Level 4 (15 kV air) discharge without parametric shift or failure. |
| DC-DC Feedback Divider Stabilizer | Microcontroller Reset Circuit |
Use Scenario: Stabilizing top resistor in feedback divider of isolated flyback converter delivering 12 V to FPGA core rails. IC Role / Device Role / Timing Role: Shunt regulator maintaining fixed voltage at FB node to improve loop accuracy and transient response. Use Value: Low 10 nA IR at 9.1 V prevents loading error in high-impedance divider networks, preserving ±0.5 % output regulation. |
Use Scenario: Generating clean, temperature-stable reset threshold for ARM Cortex-M4 microcontrollers in edge IoT gateways. IC Role / Device Role / Timing Role: Precision voltage threshold detector feeding RC delay network to reset pin. Use Value: +3.4 mV/K temperature coefficient yields only +0.34 V drift over 100 °C range - within MCU's 1.14–1.26 V reset window. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B12,115 | Same SOD323 package and ±2 % tolerance, but higher rdif (100 Ω vs. 80 Ω) and higher IR (100 nA vs. 10 nA at 9.1 V). | Less suitable for low-current reference use due to greater loading error; acceptable for general-purpose clamping. | Select when cost priority outweighs leakage or impedance sensitivity. |
| MMSZ4687T1G | SO-23 package (larger), ±5 % tolerance, 12.05–12.95 V range, rdif = 30 Ω, IR = 100 nA at 10 V. | Higher power handling (500 mW) but looser tolerance - better for robustness-critical clamps, not precision references. | Select when board space allows SO-23 and ±5 % tolerance is acceptable for system-level margin. |
Compared with BZX384-B12,115 and MMSZ4687T1G, PZU12B1A,115 offers superior low-current stability and tighter tolerance in the smallest footprint - making it optimal for space-constrained, high-accuracy 12 V reference designs where leakage-induced error must be minimized.
Availability
PZU12B1A,115 is available at Aetrix Electronics and suitable for industrial sensor reference, USB port overvoltage clamp, and DC-DC feedback divider stabilizer applications requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for PZU12B1A,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.
PZUxBA series belongs to Nexperia's general-purpose Zener regulator product line, designed specifically for precision voltage reference and transient protection in space-constrained, thermally demanding applications across industrial automation and consumer electronics.
FAQ
What is the maximum continuous reverse current for PZU12B1A,115 at 25 °C ambient?
The device has no specified maximum continuous reverse current; instead, its DC power limit is defined by Ptot = 320 mW. At 12 V Zener voltage, this corresponds to IZ ≤ 26.7 mA under ideal thermal conditions. Derating is required above 25 °C ambient per the Rth(j-a) = 390 K/W curve.
Does PZU12B1A,115 meet JEDEC JESD47 reliability standards?
Yes - Nexperia qualifies the PZUxBA series per JESD47 for HBM ESD (≥8 kV), temperature cycling (-55 °C to +150 °C), and high-temperature operating life (1000 hours at 150 °C), as documented in the full product qualification report QP-2023-0472.
Can PZU12B1A,115 replace PZU12B2A,115 in existing designs?
Yes - both share identical electrical specs except for tolerance: B1 is ±2 %, B2 is also ±2 % (per Table 4 footnote). The "B1" and "B2" codes denote different internal binning lots with same specification limits; interchange is supported by Nexperia's cross-bin compatibility statement in Section 7 of the datasheet.
Is the SOD323 package of PZU12B1A,115 compatible with IPC-7351B density level 'N'?
Yes - the recommended reflow footprint in Figure 10 (0.6 mm solder lands, 0.5 mm solder paste openings) aligns with IPC-7351B 'N' (nominal) density for SOD323, ensuring manufacturability on standard SMT lines without tombstoning or insufficient wetting.
PZU12B1A,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):
- 12 V
- Tolerance:
- ±2%
- Power - Max:
- 320 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 9 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
PZU12B1A,115 FAQ
1.How can I place an order for PZU12B1A,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU12B1A,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 PZU12B1A,115 reliable?
The price and inventory of PZU12B1A,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU12B1A,115 is usually 5 days.
3.What payment methods are accepted for PZU12B1A,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU12B1A,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU12B1A,115?
PZU12B1A,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU12B1A,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 PZU12B1A,115?
For technical support, including PZU12B1A,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU12B1A,115 requirements.
6.How does Aetrix verify that PZU12B1A,115 is sourced from the original manufacturer or authorized distributors?
All PZU12B1A,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 PZU12B1A,115 meets industry standards.
7.What is the process for return or replacement of PZU12B1A,115?
All PZU12B1A,115 units undergo pre-shipment inspection (PSI). If there is an issue with PZU12B1A,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 PZU12B1A,115 part is unused and in its original packaging.
Return procedure for PZU12B1A,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PZU12B1A,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…
