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Nexperia USA Inc. PZU12BA,115
- Part No.:
- PZU12BA,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PZU12BA,115.pdf
- Description:
- DIODE ZENER 12V 320MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:277
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Product details
Overview
PZU12BA,115 from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, designed for precision voltage reference and overvoltage protection in low-power analog circuits. It delivers nominal 12 V regulation at 5 mA, with differential resistance ≤80 Ω, reverse current ≤10 nA at 0.5 mA, temperature coefficient of +3 mV/K, and non-repetitive peak reverse current of 9 A - enabling stable clamping in power supply feedback loops and sensor biasing networks.
For engineers reviewing the PZU12BA,115 datasheet, PZU12BA,115 pinout, PZU12BA,115 application, or PZU12BA,115 equivalent, key selection criteria include its tight ±2 % tolerance (B2 series), low dynamic impedance at low currents, hard breakdown knee, and suitability for space-constrained SMT designs requiring predictable thermal coefficient behavior across -55 °C to +150 °C ambient.
Technical Context
This Zener diode operates in reverse-bias breakdown mode to maintain a stable reference voltage under varying load and temperature conditions. Its B2 tolerance grade ensures nominal 12 V output stays within 11.74 V–12.24 V at IZ = 5 mA and Tj = 25 °C, with a positive temperature coefficient (+3 mV/K) that counteracts typical PCB thermal drift in mid-range voltage references.
The device exhibits a hard breakdown knee and very low leakage (≤10 nA at 0.5 mA), minimizing standby power loss in battery-powered systems. Its 80 Ω max differential resistance at 5 mA supports stable regulation even with moderate current variations in feedback paths of LDOs or DC-DC converters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 12 V at IZ = 5 mA - defines precise regulation point for feedback and reference circuits |
| Tolerance Grade | B2 (±2 %) - ensures voltage accuracy within ±0.24 V, critical for high-precision analog sensing |
| Differential Resistance | ≤80 Ω at IZ = 5 mA - maintains low output impedance for stable regulation under load transients |
| Reverse Current | ≤10 nA at VR = 0.5 × VZ - enables ultra-low quiescent current in always-on monitoring circuits |
| Temperature Coefficient | +3 mV/K - provides predictable, linear voltage drift with junction temperature for thermal compensation design |
| Non-repetitive Peak Current | 9 A (tp = 100 µs) - supports transient surge suppression without degradation in ESD-critical nodes |
| Total Power Dissipation | 320 mW at Tamb ≤ 25 °C on FR4 PCB - sets maximum continuous DC power handling in standard layout |
Pinout & Package
Package: SOD323 (SC-76), surface-mount plastic package measuring 1.7 mm × 1.25 mm × 0.95 mm with 1.3 mm lead pitch and cathode-marked top-side bar.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated voltage node; marking bar identifies this terminal - reverse-bias anode connection point |
| 2 | Anode | Ground or lower-potential reference point; completes reverse-bias path for Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| Hard breakdown knee | Enables sharp, predictable turn-on at VZ, reducing regulation uncertainty in low-current bias networks |
| Very low leakage current | ≤10 nA at 0.5 mA reverse bias - preserves battery life in always-on IoT sensor nodes and wearables |
| B2 tolerance grade | ±2 % voltage accuracy - eliminates post-production trimming in precision voltage reference designs |
| Optimized thermal coefficient | +3 mV/K at 12 V - allows predictable compensation when paired with NTC thermistors or complementary silicon devices |
| SOD323 footprint compatibility | Standard 1.3 mm pitch, 1.7 × 1.25 mm body - supports automated placement and reflow on high-density PCBs |
Applications
| Power Supply Feedback Reference | Sensor Biasing Network |
|---|---|
Use Scenario: Stabilizing output voltage in adjustable switching regulator feedback loop using TL431-like topology. IC Role / Device Role / Timing Role: Provides precise 12 V reference to comparator input, setting regulation threshold independent of input ripple. Use Value: ±2 % tolerance ensures output accuracy within ±0.12 V across production lots without calibration. |
Use Scenario: Supplying stable bias voltage to MEMS pressure sensor bridge in automotive cabin air quality module. IC Role / Device Role / Timing Role: Acts as low-drift voltage reference for Wheatstone bridge excitation, minimizing offset drift with temperature. Use Value: +3 mV/K coefficient matches sensor's thermal drift profile, reducing net system error by >40 % vs. generic Zeners. |
| Overvoltage Clamp Protection | Low-Power Analog Reference |
Use Scenario: Protecting ADC input of industrial data logger against 15 V surges on 12 V rail. IC Role / Device Role / Timing Role: Shunts excess current above 12.24 V during transients, limiting voltage seen by downstream ICs. Use Value: 9 A non-repetitive peak current rating handles 100 µs surges without parametric shift or failure. |
Use Scenario: Generating stable 12 V reference for precision op-amp gain-setting network in portable medical pulse oximeter. IC Role / Device Role / Timing Role: Supplies low-noise, low-leakage reference to resistor divider controlling amplifier gain. Use Value: ≤10 nA reverse current prevents loading error in high-impedance divider, preserving gain accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C12 | ±5 % tolerance (B grade), 100 Ω max rdif, higher leakage (≤100 nA) | Acceptable where ±0.6 V regulation tolerance suffices and cost is primary constraint | Select only if board-level calibration or wider voltage margin accommodates looser tolerance |
| MMSZ5242B | SOD-123 package (larger), ±5 % tolerance, 23 Ω min rdif but higher IR (≤100 nA at 0.5×VZ) | Preferred for higher-power dissipation (500 mW) but unsuitable for ultra-dense layouts | Choose when thermal margin exceeds 320 mW and PCB real estate permits 2.7 × 1.4 mm footprint |
Compared with BZX84-C12 and MMSZ5242B, PZU12BA,115 offers superior voltage accuracy and leakage performance in the smallest SOD323 footprint - making it optimal for miniaturized, battery-sensitive, and high-precision analog systems where regulation stability outweighs cost or power-handling trade-offs.
Availability
PZU12BA,115 is available at Aetrix Electronics and suitable for precision voltage reference, overvoltage protection, sensor biasing, and low-power analog circuitry requiring stable component supply across industrial control, medical instrumentation, and portable electronics programs.
Supply support for PZU12BA,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, serving automotive, industrial, and consumer markets with ISO/TS 16949-certified manufacturing.
PZUxBA series belongs to Nexperia's general-purpose Zener regulator portfolio, engineered specifically for surface-mounted precision voltage reference and clamping in space-constrained, thermally demanding applications.
FAQ
What is the maximum continuous power dissipation for PZU12BA,115 at 70 °C ambient?
At Tamb = 70 °C, derated power dissipation is 224 mW, calculated using Rth(j-a) = 390 K/W and Tj(max) = 150 °C. This assumes standard FR4 PCB mounting with single-sided copper and tin plating per datasheet condition [3]. No heatsinking or enhanced pad area is included in this value.
Does PZU12BA,115 support bidirectional ESD protection?
No - PZU12BA,115 is a unidirectional Zener diode optimized for reverse-bias regulation and clamping. It lacks symmetric breakdown characteristics required for bidirectional TVS operation. For ESD protection, dedicated TVS diodes such as PESD5V0S1BA should be used instead.
How does the +3 mV/K temperature coefficient affect long-term voltage stability?
The +3 mV/K coefficient causes VZ to increase by ~30 mV over a 10 K junction temperature rise. In a 12 V reference, this yields ~0.25 % drift per 10 K - manageable in closed-loop systems but requires compensation in open-loop precision references operating across wide thermal ranges.
Can PZU12BA,115 replace PZU12B2A in existing designs?
Yes - PZU12BA,115 and PZU12B2A are identical in electrical specification, package, and marking (VK). The ",115" suffix denotes tape-and-reel packaging per Nexperia ordering convention and does not alter device functionality or parametric performance.
PZU12BA,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):
- 12 V
- Tolerance:
- ±5%
- 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
PZU12BA,115 FAQ
1.How can I place an order for PZU12BA,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU12BA,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 PZU12BA,115 reliable?
The price and inventory of PZU12BA,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU12BA,115 is usually 5 days.
3.What payment methods are accepted for PZU12BA,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU12BA,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU12BA,115?
PZU12BA,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU12BA,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 PZU12BA,115?
For technical support, including PZU12BA,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU12BA,115 requirements.
6.How does Aetrix verify that PZU12BA,115 is sourced from the original manufacturer or authorized distributors?
All PZU12BA,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 PZU12BA,115 meets industry standards.
7.What is the process for return or replacement of PZU12BA,115?
All PZU12BA,115 units undergo pre-shipment inspection (PSI). If there is an issue with PZU12BA,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 PZU12BA,115 part is unused and in its original packaging.
Return procedure for PZU12BA,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PZU12BA,115 Tags
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