Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

Nexperia USA Inc. NZH18C,115

Name: NZH18C,115
Brand: Nexperia USA Inc.
SKU: NZH18C,115
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: NZH18C,115

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

Package:: SOD-123F

Datasheet:: NZH18C,115.pdf

Description:: DIODE ZENER 18V 500MW SOD123F

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:6,327

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

NZH18C,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 17.42 V to 18.33 V at I_Z = 10 mA, with maximum differential resistance of 150 Ω, reverse current ≤ 0.04 μA at V_R = 13 V, and AEC-Q101 qualification for under-hood applications.

For engineers reviewing the NZH18C,115 datasheet, NZH18C,115 pinout, NZH18C,115 application, or NZH18C,115 equivalent, key selection criteria include Zener voltage tolerance (±3%), low thermal resistance (125 K/W junction-to-solder-point), stable regulation under transient load conditions, and compatibility with reflow-only assembly on FR4 or ceramic PCBs.

Technical Context

This Zener diode operates as a two-terminal voltage reference device, clamping reverse-biased voltage at its specified V_Z range while maintaining low dynamic impedance across 1–10 mA test currents. Its design targets stable DC biasing and overvoltage protection in compact, high-reliability circuits.

It exhibits a forward voltage ≤ 0.9 V at I_F = 10 mA and supports pulsed forward operation up to 250 mA. Thermal performance is defined for both FR4 (R_th(j-a) = 250 K/W) and Al₂O₃ substrates (R_th(j-sp) = 70 K/W), enabling accurate derating in thermally constrained layouts.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage V_Z	17.42 V to 18.33 V at I_Z = 10 mA - defines precise regulation threshold for 18 V nominal rail stabilization
Differential Resistance r_dif	≤ 150 Ω - ensures minimal output voltage shift under ±1 mA load variation
Reverse Current I_R	≤ 0.04 μA at V_R = 13 V - guarantees negligible leakage in high-impedance reference nodes
Total Power Dissipation P_tot	500 mW (FR4) / 1 W (ceramic) - sets maximum continuous DC power handling based on board thermal mass
Junction Temperature T_j	−55 °C to +150 °C - enables operation in extended-temperature automotive environments
Thermal Resistance R_th(j-sp)	70 K/W - quantifies temperature rise from junction to cathode solder point on standard footprint

Pinout & Package

The NZH18C,115 is housed in a SOD123F surface-mount plastic package measuring 3.6 mm × 1.7 mm × 1.0 mm, with gull-wing leads optimized for reflow soldering on FR4 or ceramic PCBs. The cathode is marked by a bar on the device top surface.

Pin/Terminal	Circuit Role	Design Meaning
1 (K)	Cathode	Connected to regulated output node; marking bar identifies this terminal for correct orientation during placement
2 (A)	Anode	Connected to ground or lower-potential rail; reverse-biased configuration enables Zener breakdown conduction

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness per JESD22 standards
Low differential resistance	150 Ω max ensures <±15 mV regulation error across 10 mA ±1 mA load current swing
SOD123F footprint	Standardized 2.9 mm × 1.6 mm land pattern supports automated optical inspection and high-yield reflow
Wide Zener voltage range	17.42–18.33 V window provides tight tolerance for 18 V system references without external trimming

Applications

Automotive Body Control Module (BCM)

Industrial Sensor Signal Conditioning

Use Scenario: Stable 18 V reference for microcontroller ADC calibration and CAN transceiver biasing in BCM power domain.

IC Role / Device Role / Timing Role: Zener voltage reference providing fixed threshold for analog monitoring and digital logic level translation.

Use Value: Maintains ±0.5% reference accuracy over −40 °C to +125 °C ambient, reducing need for active compensation circuitry.

Use Scenario: Precision voltage clamp in 4–20 mA loop transmitter front-end protecting op-amp inputs from overvoltage transients.

IC Role / Device Role / Timing Role: Passive overvoltage protection element limiting input swing to 18.33 V peak.

Use Value: Limits fault energy to <10 mJ during 100 ns surge events, preserving downstream signal chain integrity.

DC-DC Converter Feedback Network

Power Supply Undervoltage Lockout (UVLO)

Use Scenario: Top resistor in resistive divider feeding feedback pin of buck controller regulating 18 V output rail.

IC Role / Device Role / Timing Role: Voltage reference establishing setpoint for closed-loop regulation.

Use Value: Enables ±1.5% output voltage tolerance across line/load/temperature with no trimming required.

Use Scenario: Threshold detector in discrete UVLO circuit disabling power stage when main 24 V supply drops below 18 V.

IC Role / Device Role / Timing Role: Zener-based hysteresis-free trip point generator.

Use Value: Activates shutdown at 17.42 V with <0.1 V hysteresis, preventing brown-out oscillation during slow supply ramp-down.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener regulation applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX84-C18	Same nominal V_Z (18 V), but ±5% tolerance vs. NZH18C's ±3%; SOT23 package; not AEC-Q101 qualified	Limited to commercial-temperature industrial use; unsuitable for automotive under-hood deployment	Select only for cost-sensitive non-automotive designs where tighter V_Z tolerance and qualification are unnecessary
MMSZ4685	V_Z = 18 V ±5%, 500 mW rating, SOD-123 package; AEC-Q101 qualified but higher r_dif (200 Ω)	Acceptable for general-purpose regulation but less stable under dynamic load due to higher impedance	Prefer when existing BOM uses MMSZ series; avoid where <150 Ω r_dif is required for low-noise reference stability

Compared with BZX84-C18 and MMSZ4685, NZH18C,115 offers superior voltage tolerance (±3%), lower dynamic impedance (150 Ω), and verified AEC-Q101 compliance-making it the optimal choice for automotive-grade 18 V reference and protection circuits demanding long-term parametric stability.

Availability

NZH18C,115 is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor transmitters, and DC-DC converter feedback networks requiring stable component supply with full traceability and lifecycle continuity.

Supply support for NZH18C,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 quality.

The NZH series is engineered specifically for high-stability Zener regulation in space-constrained, thermally demanding automotive and industrial systems-emphasizing low r_dif, AEC-Q101 qualification, and SOD123F manufacturability.

FAQ

What is the maximum continuous reverse current for NZH18C,115 at 13 V?

The reverse current I_R is guaranteed ≤ 0.04 μA at V_R = 13 V and T_j = 25 °C. This ultra-low leakage supports high-impedance reference nodes and minimizes quiescent power loss in battery-critical applications.

Can NZH18C,115 be used in pulse-clamping applications?

Yes-it supports peak forward current up to 250 mA under pulsed conditions (t_p ≤ 300 μs, duty cycle ≤ 2%). Its 1 W dissipation rating on ceramic PCB allows brief energy absorption during transient overvoltage events.

Is the SOD123F package compatible with standard reflow profiles?

Yes-Nexperia specifies reflow soldering as the only recommended method. The SOD123F footprint aligns with IPC-7351B standards, and thermal characteristics are validated for JEDEC J-STD-020-compliant profiles on both FR4 and Al₂O₃ substrates.

How does NZH18C,115 differ from generic 18 V Zeners in terms of automotive suitability?

It is fully AEC-Q101 qualified-including stress testing for temperature cycling, high-temperature reverse bias, and electrostatic discharge-whereas generic Zeners lack documented automotive validation and may fail accelerated life testing in under-hood environments.

NZH18C,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):: 18 V

Tolerance:: ±3%

Power - Max:: 500 mW

Impedance (Max) (Zzt):: 23 Ohms

Current - Reverse Leakage @ Vr:: 40 nA @ 13 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

NZH18C,115 FAQ

1.How can I place an order for NZH18C,115 through Aetrix?

Please submit a Request for Quotation (RFQ) for NZH18C,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 NZH18C,115 reliable?

The price and inventory of NZH18C,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NZH18C,115 is usually 5 days.

3.What payment methods are accepted for NZH18C,115?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NZH18C,115 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for NZH18C,115?

NZH18C,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NZH18C,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 NZH18C,115?

For technical support, including NZH18C,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NZH18C,115 requirements.

6.How does Aetrix verify that NZH18C,115 is sourced from the original manufacturer or authorized distributors?

All NZH18C,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 NZH18C,115 meets industry standards.

7.What is the process for return or replacement of NZH18C,115?

All NZH18C,115 units undergo pre-shipment inspection (PSI). If there is an issue with NZH18C,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 NZH18C,115 part is unused and in its original packaging.

Return procedure for NZH18C,115:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

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.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

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…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

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…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

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…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

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 …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

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…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

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…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

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…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

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…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

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…