My Inquiry
My Account
Nexperia USA Inc. NZX24X,133
- Part No.:
- NZX24X,133
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
NZX24X,133.pdf
- Description:
- DIODE ZENER 23.19V 500MW ALF2
- Quantity:
- Payment:
- Shipping:
Inventory:2,159
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
NZX24X,133 from Nexperia is a single Zener diode in a hermetically sealed SOD27 (SC-40) glass package, designed for precision voltage regulation and reference applications at 24 V nominal Zener voltage (VZ = 22.9–24.0 V at IZ = 2 mA), with 70 Ω typical differential resistance, ≤0.05 µA reverse leakage at 16.8 V, and 500 mW total power dissipation.
For engineers reviewing the NZX24X,133 datasheet, NZX24X,133 pinout, NZX24X,133 application, or NZX24X,133 equivalent, this component serves as a stable, low-leakage, axial-leaded voltage reference in analog power supply feedback loops, overvoltage clamping circuits, and industrial sensor biasing where thermal stability and long-term reliability under ambient temperatures up to +175 °C are required.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified working voltage tolerance of ±5% (22.9–24.0 V at IZ = 2 mA) and exhibits a temperature coefficient of approximately −2.5 mV/K near 24 V, enabling predictable drift compensation in regulated supplies. Its low differential resistance (70 Ω typ.) ensures minimal output impedance variation across operating current.
The device uses a glass-encapsulated axial lead construction (SOD27/SC-40), rated for junction temperatures up to 175 °C and ambient storage from −65 °C to +175 °C. Thermal resistance from junction to ambient is 380 K/W in free air on FR4 PCB - critical for derating calculations in compact, convection-cooled designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VZ (Zener Voltage) | 22.9–24.0 V at IZ = 2 mA - defines precise clamping/reference point in feedback or protection circuits |
| rdif (Diff. Resistance) | 70 Ω typical - ensures stable regulation under varying load currents without significant voltage shift |
| IR (Reverse Leakage) | ≤0.05 µA at VR = 16.8 V - enables ultra-low standby power loss in battery-backed or energy-sensitive systems |
| Ptot (Total Power) | 500 mW max at Ttp ≤ 25 °C - sets maximum continuous dissipation before thermal derating applies |
| Tj (Junction Temp) | −65 to +175 °C - supports operation in harsh environments including industrial motor controls and automotive under-hood modules |
| Rth(j-a) | 380 K/W in free air - determines required board layout and airflow for safe thermal management |
| VF (Forward Voltage) | ≤1.5 V at IF = 200 mA - allows use as forward-biased clamp or polarity indicator in dual-role circuits |
Pinout & Package
Package: SOD27 (SC-40), hermetically sealed axial-leaded glass package with 2 leads; cathode identified by a colored band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output or reference node; reverse-biased during Zener operation |
| 2 | Anode | Connected to ground or lower-potential rail; completes reverse-bias path for breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass sealing | Prevents moisture ingress and long-term parameter drift - essential for 15+ year field reliability in industrial sensors |
| Low differential resistance | 70 Ω typical at 24 V - maintains tight voltage regulation across ±10% load current variation |
| Ultra-low reverse leakage | ≤0.05 µA at 16.8 V - eliminates parasitic discharge paths in high-impedance reference nodes |
| Wide ambient temperature range | −55 to +175 °C operation - suitable for embedded control units in engine compartments or factory-floor PLCs |
| Axial lead mechanical robustness | 25.4 mm minimum lead length - enables secure through-hole mounting and vibration-resistant solder joints |
Applications
| Industrial Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
|
Use Scenario: Regulating output voltage in isolated flyback converters using optocoupler feedback. IC Role / Device Role / Timing Role: Zener reference for TL431-like shunt regulator circuit; sets precise 24 V feedback threshold. Use Value: Tight 5% VZ tolerance and low rdif ensure ±1% output regulation accuracy across line/load/temperature. |
Use Scenario: Protecting microcontroller I/O pins from transient surges on 24 V fieldbus lines. IC Role / Device Role / Timing Role: Reverse-biased clamping element placed between signal line and ground. Use Value: Fast response (<10 ns) and low leakage preserve signal integrity while limiting voltage to 24.7 V peak. |
| Sensor Bias Reference | Temperature-Stable Voltage Reference |
|
Use Scenario: Providing excitation voltage to 4–20 mA current-loop pressure transducers. IC Role / Device Role / Timing Role: Precision 24 V reference source powering Wheatstone bridge and signal conditioning circuitry. Use Value: Low tempco (−2.5 mV/K) and hermetic packaging minimize drift over −40 to +85 °C operating range. |
Use Scenario: Generating stable reference for ADCs in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Primary voltage reference in ratiometric measurement systems requiring long-term stability. Use Value: <0.05 µA leakage prevents loading of high-impedance reference dividers; glass seal ensures <10 ppm/year aging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55-C24 | Plastic DO-35 package; 5% tolerance; 100 Ω rdif; 100 mW Ptot | Limited to +150 °C Tj; higher leakage (≤5 µA); unsuitable for high-temp industrial use | Select when cost sensitivity outweighs thermal/reliability requirements |
| 1N4749A | DO-41 plastic package; 5% tolerance; 20 Ω rdif; 1 W Ptot | Higher power but larger footprint; no hermetic seal; higher leakage (≤5 µA at 18.2 V) | Select only if >500 mW dissipation is needed and board space permits larger package |
Compared with BZX55-C24 and 1N4749A, NZX24X,133 delivers superior thermal endurance (+175 °C), hermetic reliability, and ultra-low leakage - making it the preferred choice for mission-critical industrial references where long-term stability and environmental resilience are non-negotiable.
Availability
NZX24X,133 is available at Aetrix Electronics and suitable for industrial power supply feedback, overvoltage protection clamps, sensor bias references, and temperature-stable voltage references requiring stable component supply across extended product lifecycles.
Supply support for NZX24X,133 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 solutions with focus on efficiency, reliability, and miniaturization.
The NZX series targets general-purpose Zener regulation in demanding environments, emphasizing hermetic sealing, wide temperature capability, and tight parametric consistency for industrial and automotive-adjacent applications.
FAQ
What is the maximum reverse voltage (VR) that NZX24X,133 can withstand before breakdown?
The NZX24X,133 has a nominal Zener voltage of 22.9–24.0 V at IZ = 2 mA, and its guaranteed breakdown begins within this range. It is not rated for sustained reverse voltage above VZ; operation above 24.0 V will cause conduction. The maximum non-breakdown reverse voltage is not specified - the device is intended for controlled Zener operation, not blocking.
Can NZX24X,133 be used in surface-mount designs?
No - NZX24X,133 uses an axial-leaded SOD27 (SC-40) glass package designed exclusively for through-hole mounting. It lacks solder pads or terminations compatible with reflow or wave soldering processes. For SMT equivalents, consider Nexperia's BZX384-B24 or PZM24NB4, which offer similar VZ in SOT23/SOT323 packages.
How does the temperature coefficient affect regulation accuracy over −40 °C to +85 °C?
At 24 V, NZX24X,133 has a typical temperature coefficient of −2.5 mV/K. Over a 125 °C span, this yields ~313 mV total drift - approximately ±1.3% of 24 V. For high-accuracy systems, this must be compensated via circuit design or paired with temperature-sensing feedback; the diode itself provides stable relative behavior, not absolute precision.
Is NZX24X,133 automotive-qualified?
No - per Nexperia's legal disclaimers, NZX24X,133 is explicitly labeled as a non-automotive qualified product. It is neither AEC-Q200 tested nor rated for automotive-grade reliability, ESD, or lifetime requirements. Use in automotive applications is at the customer's sole risk and requires full validation against vehicle-level specifications.
NZX24X,133 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- NZX
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Cut Tape (CT)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 23.19 V
- Tolerance:
- ±2%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 70 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 16.8 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.5 V @ 200 mA
- Operating Temperature:
- -55°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- ALF2
NZX24X,133 FAQ
1.How can I place an order for NZX24X,133 through Aetrix?
Please submit a Request for Quotation (RFQ) for NZX24X,133 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 NZX24X,133 reliable?
The price and inventory of NZX24X,133 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NZX24X,133 is usually 5 days.
3.What payment methods are accepted for NZX24X,133?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NZX24X,133 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NZX24X,133?
NZX24X,133 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NZX24X,133 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 NZX24X,133?
For technical support, including NZX24X,133 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NZX24X,133 requirements.
6.How does Aetrix verify that NZX24X,133 is sourced from the original manufacturer or authorized distributors?
All NZX24X,133 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 NZX24X,133 meets industry standards.
7.What is the process for return or replacement of NZX24X,133?
All NZX24X,133 units undergo pre-shipment inspection (PSI). If there is an issue with NZX24X,133, 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 NZX24X,133 part is unused and in its original packaging.
Return procedure for NZX24X,133:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NZX24X,133 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…
