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Nexperia USA Inc. NZH12B,115
- Part No.:
- NZH12B,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
NZH12B,115.pdf
- Description:
- DIODE ZENER 12V 500MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:1,630
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Product details
Overview
NZH12B,115 from Nexperia is a single Zener diode in SOD123F package, designed for precision voltage regulation and reference functions in automotive and industrial power rails. It delivers a nominal Zener voltage of 12.0 V at IZ = 10 mA, with differential resistance ≤110 Ω, reverse current ≤0.04 μA at VR = 9 V, and AEC-Q101 qualification for under-hood applications.
For engineers reviewing the NZH12B,115 datasheet, NZH12B,115 pinout, NZH12B,115 application, or NZH12B,115 equivalent, this page provides verified Zener parameters, thermal resistance data (Rth(j-a) = 250 K/W on FR4), cathode/anode terminal mapping, and automotive-grade substitution guidance - all confirmed against Nexperia's Rev. 2 (May 2024) product data sheet.
Technical Context
This Zener diode operates as a two-terminal voltage reference device, clamping reverse-biased voltage to its specified VZ range (11.44–12.03 V) with low dynamic impedance and minimal temperature drift. Its design targets stable DC biasing and overvoltage protection in compact SMD layouts.
It supports continuous operation up to Tj = 150 °C and ambient temperatures from −55 °C to +150 °C, with thermal resistance from junction to solder point (Rth(j-sp)) rated at 70 K/W when mounted on ceramic substrate - critical for thermal reliability in high-density PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 11.44–12.03 V at IZ = 10 mA - defines precise regulation threshold for 12 V rail stabilization |
| Differential Resistance rdif | ≤110 Ω - ensures tight voltage control under load variation and ripple suppression |
| Reverse Current IR | ≤0.04 μA at VR = 9 V - enables ultra-low leakage in battery-backed or standby circuits |
| Forward Voltage VF | ≤0.9 V at IF = 10 mA - confirms low conduction loss during forward-bias transient events |
| Total Power Dissipation Ptot | 500 mW (FR4 PCB) / 1 W (ceramic PCB) - sets maximum steady-state power handling per mounting condition |
| Junction-to-Ambient Rth(j-a) | 250 K/W (FR4) - determines required board copper area and airflow for thermal management |
| AEC-Q101 Qualified | Yes - validates suitability for automotive powertrain, body electronics, and ADAS modules |
Pinout & Package
SOD123F surface-mount plastic package: 2-lead, flat lead, small outline (3.6 × 1.7 mm footprint), cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal; carries reverse current during Zener breakdown |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes bias path for Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive use including engine control units and infotainment power supplies |
| Low differential resistance (≤110 Ω) | Minimizes output voltage deviation across ±10% current changes in feedback loops |
| Ultra-low reverse leakage (≤0.04 μA) | Preserves battery life in always-on vehicle subsystems such as CAN wake-up receivers |
| SOD123F package footprint | Enables high-density placement on space-constrained PCBs without compromising thermal performance |
| Wide operating temperature range | −55 °C to +150 °C ambient allows deployment in under-hood and industrial motor drive environments |
Applications
| Automotive Voltage Reference | Industrial Sensor Biasing |
|---|---|
Use Scenario: Providing stable 12 V reference for analog-to-digital converters in engine control modules. IC Role / Device Role / Timing Role: Zener diode acts as primary voltage reference source for ADC input scaling and sensor signal conditioning. Use Value: Tight VZ tolerance (±2.5%) and low rdif ensure measurement accuracy within ±0.5 LSB across temperature. |
Use Scenario: Biasing precision current sources for 4–20 mA industrial transmitters. IC Role / Device Role / Timing Role: Functions as shunt regulator to maintain constant excitation voltage for RTD or strain gauge bridges. Use Value: Sub-microampere reverse leakage prevents error injection into high-impedance sensor nodes. |
| Power Supply Overvoltage Clamp | Microcontroller Reset Circuit |
Use Scenario: Protecting downstream 12 V logic from transient surges in automotive DC/DC outputs. IC Role / Device Role / Timing Role: Shunt clamp activated during overvoltage events (>13.5 V), diverting excess current to ground. Use Value: Fast response and 1 W pulse capability (on ceramic PCB) absorb ISO 7637-2 Load Dump energy without failure. |
Use Scenario: Generating clean reset signal for microcontrollers during brown-out conditions. IC Role / Device Role / Timing Role: Zener + RC network creates voltage-threshold-triggered reset pulse with controlled hysteresis. Use Value: Low temperature coefficient and AEC-Q101 reliability ensure deterministic reset behavior across vehicle lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C12 | VZ = 11.4–12.7 V (±5%), rdif ≤ 120 Ω, no AEC-Q101 qualification | Limited to commercial-grade consumer or industrial non-automotive systems | Select when cost sensitivity outweighs automotive qualification requirements |
| MMSZ4687 | VZ = 11.4–12.6 V (±5%), rdif ≤ 150 Ω, AEC-Q101 qualified, SOD-123 package | Identical mechanical fit but higher differential resistance reduces regulation precision | Choose when legacy BOM compatibility with ON Semiconductor platforms is required |
Compared with NZH12B,115, BZX84-C12 lacks automotive qualification and offers looser VZ tolerance, while MMSZ4687 matches qualification and footprint but trades 36% higher rdif, reducing voltage stability under dynamic load.
Availability
NZH12B,115 is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interfaces, and embedded reset circuitry requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for NZH12B,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 components and advanced packaging.
The NZH series targets automotive and industrial voltage regulation applications, delivering AEC-Q101-compliant Zener diodes optimized for thermal robustness, low leakage, and precision VZ in space-constrained SMD designs.
FAQ
What is the maximum continuous reverse current the NZH12B,115 can handle at 12 V?
The NZH12B,115 is not rated for continuous reverse current at its nominal Zener voltage. Its limiting value is IF = 250 mA forward, but reverse operation is defined by power dissipation: at 12 V, maximum continuous reverse current is Ptot/VZ = 500 mW / 12 V ≈ 42 mA on FR4 PCB. Exceeding this risks thermal runaway unless heatsinking is applied.
Is the NZH12B,115 compatible with lead-free reflow soldering profiles?
Yes - the SOD123F package is qualified for standard lead-free reflow soldering per JEDEC J-STD-020. Peak temperature must not exceed 260 °C for ≤60 seconds, with ramp rates compliant with IPC/JEDEC J-STD-020D. The device's 150 °C max junction temperature and thermal characteristics support full compliance.
How does the 0.04 μA reverse current specification impact circuit design?
This ultra-low IR enables use in high-impedance bias networks where leakage would otherwise shift operating points - e.g., in op-amp reference dividers or microcontroller reset thresholds. At 9 V reverse bias, it draws only 0.36 nW, eliminating measurable error in battery-powered systems with >10 MΩ source impedances.
Can NZH12B,115 replace NZH12C in an existing design?
No - NZH12B uses IZ = 10 mA test condition and has VZ = 11.44–12.03 V, while NZH12C is tested at IZ = 5 mA and has wider VZ range (11.2–12.4 V). Their differential resistance also differs (110 Ω vs. 120 Ω), affecting regulation stiffness. Direct substitution requires validation of loop stability and voltage tolerance margins.
NZH12B,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SOD-123F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 12 V
- Tolerance:
- ±3%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 12 Ohms
- Current - Reverse Leakage @ Vr:
- 40 nA @ 9 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123F
NZH12B,115 FAQ
1.How can I place an order for NZH12B,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for NZH12B,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 NZH12B,115 reliable?
The price and inventory of NZH12B,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NZH12B,115 is usually 5 days.
3.What payment methods are accepted for NZH12B,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NZH12B,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NZH12B,115?
NZH12B,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NZH12B,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 NZH12B,115?
For technical support, including NZH12B,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NZH12B,115 requirements.
6.How does Aetrix verify that NZH12B,115 is sourced from the original manufacturer or authorized distributors?
All NZH12B,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 NZH12B,115 meets industry standards.
7.What is the process for return or replacement of NZH12B,115?
All NZH12B,115 units undergo pre-shipment inspection (PSI). If there is an issue with NZH12B,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 NZH12B,115 part is unused and in its original packaging.
Return procedure for NZH12B,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NZH12B,115 Tags
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