My Inquiry
My Account
Nexperia USA Inc. BZX384-A24X
- Part No.:
- BZX384-A24X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-A24X.pdf
- Description:
- DIODE ZENER 24V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:4,813
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZX384-A24X from Nexperia is a ±1 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 24 V nominal breakdown voltage at 5 mA, 300 mW total power dissipation, and 16.8 mV/K temperature coefficient - used for precision low-power voltage reference and overvoltage clamping in sensor signal conditioning circuits.
For engineers reviewing the BZX384-A24X datasheet, BZX384-A24X pinout, BZX384-A24X application, or BZX384-A24X equivalent, key selection criteria include its tight ±1 % VZ tolerance, low 250 mA forward current limit, 55 μA reverse leakage at 19.2 V, 250 Ω differential resistance at 5 mA, and thermal resistance of 415 K/W in free air - critical for stable biasing in space-constrained analog front-ends.
Technical Context
This Zener diode operates in reverse-biased avalanche mode to maintain a stable 24 V reference across load variations, with specified test conditions at Tj = 25 °C and IZ = 5 mA. Its low 250 Ω dynamic impedance ensures minimal output voltage shift under changing current demand.
The device features a negative temperature coefficient of +16.8 mV/K above 6 V, enabling predictable drift compensation in temperature-sensitive references. It supports non-repetitive surge handling up to 40 W for 100 μs pulses, with cathode-anode polarity clearly marked by a bar on the SOD323 body.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VZ) | 23.76 V to 24.24 V at IZ = 5 mA - ensures ±1 % regulation accuracy for precision 24 V reference generation |
| Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C - defines maximum continuous DC power handling on standard FR4 PCB |
| Differential Resistance (rdif) | 250 Ω max at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Reverse Leakage (IR) | 55 μA max at VR = 19.2 V - sets minimum quiescent current in clamping configurations |
| Temperature Coefficient (SZ) | +16.8 mV/K at IZ = 5 mA - quantifies VZ drift per degree Celsius for thermal design margining |
| Non-repetitive Peak Power | 40 W for tp = 100 μs - enables transient overvoltage suppression without failure |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA - defines conduction loss when used in forward-biased protection paths |
Pinout & Package
SOD323 (SC-76) surface-mount plastic package with 2 leads, 1.35 mm × 0.85 mm footprint, 0.45 mm height, and cathode marked by a bar on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; polarity marker aligns with PCB silkscreen bar for correct orientation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; forms reverse-bias path for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| ±1 % VZ tolerance | Enables direct replacement in high-accuracy 24 V reference designs without calibration adjustment |
| Low-profile SOD323 package | Supports automated placement in dense PCB layouts with 0.65 mm lead pitch and <1 mm height clearance |
| 415 K/W junction-to-ambient Rth | Allows thermal derating calculation for ambient temperatures up to +125 °C in sealed enclosures |
| 55 μA max reverse leakage @ 19.2 V | Minimizes standby current in always-on voltage monitor circuits powered from microampere sources |
| 100 μs/40 W surge rating | Provides immunity against ESD events per IEC 61000-4-2 Level 4 without external TVS stacking |
Applications
| Industrial Sensor Signal Conditioning | USB-C Power Delivery Clamp |
|---|---|
Use Scenario: Stabilizing excitation voltage for 4–20 mA loop-powered pressure transducers operating from 24 V rails. IC Role / Device Role / Timing Role: Zener reference diode providing fixed 24 V regulation to op-amp bias networks and ADC reference dividers. Use Value: ±1 % VZ tolerance maintains <0.5 % full-scale error in analog signal chain without trimming resistors. |
Use Scenario: Clamping CC line voltage during USB-C port negotiation to prevent controller latch-up. IC Role / Device Role / Timing Role: Reverse-biased Zener limiting CC pin voltage to 24 V during hot-plug transients. Use Value: 40 W non-repetitive surge rating absorbs 100 μs ESD pulses without degradation, eliminating need for discrete TVS. |
| Automotive Cabin Control Panel | IoT Node Battery Monitor |
Use Scenario: Regulating supply to touch controller ICs in 12 V automotive infotainment displays. IC Role / Device Role / Timing Role: Low-power shunt regulator maintaining clean 24 V auxiliary rail derived from buck converter output. Use Value: 300 mW Ptot and 250 Ω rdif ensure stable 24 V output across -40 °C to +105 °C ambient range. |
Use Scenario: Providing reference voltage for lithium battery cell voltage measurement in wireless sensor nodes. IC Role / Device Role / Timing Role: Precision Zener generating stable 24 V reference for 16-bit SAR ADC input scaling. Use Value: +16.8 mV/K temperature coefficient allows software-based drift compensation using onboard temperature sensor data. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5249BS-7-F | 24 V ±5 % tolerance, SOD-123 package, 200 mW Ptot, 300 Ω rdif | Higher tolerance and lower power rating reduce accuracy in precision references but improve cost-per-unit in non-critical clamping | Select when ±5 % regulation suffices and board space allows larger SOD-123 footprint |
| Vishay BZX384-C24-TP | 24 V ±5 % tolerance, same SOD323 package, 300 mW Ptot, 250 Ω rdif, higher 100 μA IR | Looser tolerance increases reference error but identical thermal and surge performance enables drop-in replacement where calibration is performed post-assembly | Select for cost-sensitive production where final system calibration compensates for VZ variation |
Compared with BZX384-A24X, the MMBZ5249BS-7-F trades ±1 % accuracy and SOD323 compactness for lower cost and wider availability, while the BZX384-C24-TP retains identical package and power specs but relaxes tolerance to ±5 % - making it suitable only where post-production trimming or software correction is implemented.
Availability
BZX384-A24X is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, USB-C power delivery clamp circuits, automotive cabin control panels, and IoT node battery monitors requiring stable component supply and traceable sourcing.
Supply support for BZX384-A24X 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 manufacturer headquartered in Nijmegen, Netherlands, specializing in high-volume logic, discretes, and MOSFETs with focus on reliability and efficiency.
The BZX384 series belongs to Nexperia's precision Zener diode product line, engineered for low-power voltage reference and overvoltage protection in space-constrained consumer, industrial, and computing applications.
FAQ
What is the maximum continuous reverse current the BZX384-A24X can sustain?
The BZX384-A24X does not specify a maximum continuous reverse (Zener) current; instead, its safe operating area is defined by total power dissipation (300 mW at Tamb ≤ 25 °C) and thermal resistance (415 K/W). At 24 V, this limits continuous Zener current to approximately 12.5 mA under ideal cooling conditions - derating required above 25 °C ambient.
How is polarity identified on the BZX384-A24X SOD323 package?
Polarity is marked by a white or black bar on the top surface of the SOD323 package, aligned with Pin 1 (cathode). The cathode (K) connects to the regulated output side of the circuit, while Pin 2 (anode) connects to ground or the lower-potential rail - consistent with standard Zener diode symbol orientation.
Can the BZX384-A24X be used in series for higher voltage regulation?
Yes - multiple BZX384-A24X diodes may be connected in series to achieve higher regulated voltages (e.g., two in series yield ~48 V), but voltage distribution depends on matching of VZ tolerances and temperature coefficients. For reliable operation, use matched lots and ensure equal thermal coupling to avoid current hogging and thermal runaway.
Does the BZX384-A24X meet automotive qualification standards?
No - the BZX384-A24X is explicitly designated as non-automotive qualified per Nexperia's revision history (Rev. 4, January 2023). It lacks AEC-Q101 stress testing and is not warranted for automotive safety-critical systems. For automotive use, Nexperia offers separate -Q qualified variants such as the BZX384-A24-Q series.
BZX384-A24X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX384
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 24 V
- Tolerance:
- ±1%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 16.8 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
BZX384-A24X FAQ
1.How can I place an order for BZX384-A24X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-A24X 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 BZX384-A24X reliable?
The price and inventory of BZX384-A24X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX384-A24X is usually 5 days.
3.What payment methods are accepted for BZX384-A24X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-A24X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-A24X?
BZX384-A24X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-A24X 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 BZX384-A24X?
For technical support, including BZX384-A24X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-A24X requirements.
6.How does Aetrix verify that BZX384-A24X is sourced from the original manufacturer or authorized distributors?
All BZX384-A24X 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 BZX384-A24X meets industry standards.
7.What is the process for return or replacement of BZX384-A24X?
All BZX384-A24X units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-A24X, 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 BZX384-A24X part is unused and in its original packaging.
Return procedure for BZX384-A24X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX384-A24X 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…
