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Nexperia USA Inc. BZX84-C24,215
- Part No.:
- BZX84-C24,215
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84-C24,215.pdf
- Description:
- DIODE ZENER 24V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,771
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Product details
Overview
BZX84-C24,215 from Nexperia is a ±5 % tolerance Zener voltage regulator diode in SOT23 (TO-236AB) package, rated for 24 V nominal breakdown voltage at 5 mA, 250 mW total power dissipation, and 55 Ω maximum differential resistance - used for precision low-power voltage reference and overvoltage protection in sensor signal conditioning circuits.
For engineers reviewing the BZX84-C24,215 datasheet, BZX84-C24,215 pinout, BZX84-C24,215 application, or BZX84-C24,215 equivalent, key selection criteria include Zener voltage tolerance (±5 %), thermal resistance (330 K/W to solder point), non-repetitive peak reverse current (1.25 A), and SOT23 footprint compatibility with high-density PCB layouts.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain stable DC voltage across load variations and supply fluctuations. Its 24 V nominal Zener voltage is specified at IZ = 5 mA with a temperature coefficient of +16.8 mV/K, indicating positive drift with junction temperature rise.
The device features low dynamic impedance (≤55 Ω at 5 mA), supports pulse operation up to 40 W (100 μs square wave), and exhibits ≤0.9 V forward voltage at 10 mA - enabling bidirectional clamping and dual-role use in protection and regulation paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 22.8 V to 25.6 V at IZ = 5 mA - defines regulated output range under standard test conditions |
| Power Dissipation Ptot | 250 mW at Tamb ≤ 25 °C on FR4 PCB - sets continuous DC power limit for thermal design |
| Differential Resistance rdif | ≤55 Ω at IZ = 5 mA - determines regulation stiffness and output voltage variation under load current change |
| Reverse Current IR | ≤70 μA at VR = 18.8 V - quantifies leakage before breakdown, critical for low-power standby circuits |
| Non-repetitive Peak Current IZSM | 1.25 A at tp = 100 μs - specifies transient surge handling capability for ESD or inductive kick suppression |
| Forward Voltage VF | ≤0.9 V at IF = 10 mA - enables use as low-drop clamp or series rectifier in bidirectional protection schemes |
| Junction-to-Solder-Point Rth(j-sp) | 330 K/W - guides thermal pad layout and copper pour design for reliable power derating |
Pinout & Package
SOT23 (TO-236AB) plastic surface-mounted package with 3 leads; 1.3 mm × 2.9 mm footprint, 1.1 mm height, and gull-wing lead form for reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Connected to lower-potential node in reverse-bias regulation; carries forward current during clamping events |
| 2 | Not Connected (n.c.) | Internally unconnected terminal - must remain floating; no PCB trace or thermal pad connection |
| 3 | Cathode (K) | Connected to higher-potential node; serves as voltage reference output and primary heat path to PCB |
Key Features
| Feature | Design Value |
|---|---|
| ±5 % Zener voltage tolerance | Enables cost-effective regulation where tight voltage accuracy is not required, e.g., supply rail monitoring thresholds |
| 250 mW power rating | Supports regulation in ultra-low-power systems such as battery-backed sensors and IoT edge nodes without heatsinking |
| 1.25 A non-repetitive peak current | Provides robust transient immunity against 100 μs surges, meeting IEC 61000-4-5 Level 3 surge requirements |
| 330 K/W junction-to-solder-point thermal resistance | Allows direct thermal coupling to PCB copper, enabling predictable derating curves down to 150 °C junction temperature |
| SOT23 package compatibility | Ensures drop-in replacement in legacy designs using JEDEC-standard footprint and automated assembly compatibility |
Applications
| Industrial Sensor Signal Conditioning | USB Port Overvoltage Protection |
|---|---|
|
Use Scenario: Stabilizing reference voltage for 24 V industrial analog sensor outputs subject to supply ripple and EMI. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to clamp and regulate excitation voltage for bridge-based pressure transducers. Use Value: Maintains <±1 % output stability over -40 °C to +85 °C ambient via +16.8 mV/K temperature coefficient compensation in feedback network. |
Use Scenario: Protecting USB 2.0 data lines and VBUS from accidental 24 V misconnection in field-serviceable equipment. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between D+ and D− lines, leveraging forward conduction (<0.9 V) and reverse Zener action (24 V). Use Value: Limits transient voltage to safe levels within 100 ns while surviving 1.25 A surge pulses without degradation. |
| Programmable Logic Controller Input Protection | Low-Power Microcontroller Reset Circuit |
|
Use Scenario: Safeguarding 24 V digital input channels on PLC modules against wiring faults and induced transients. IC Role / Device Role / Timing Role: Primary shunt regulator in series with current-limiting resistor, sinking fault current during overvoltage events. Use Value: Absorbs up to 40 W peak power (100 μs) without failure, preventing damage to downstream optocouplers and level translators. |
Use Scenario: Generating precise reset threshold for 3.3 V microcontrollers powered from a 24 V intermediate rail via LDO. IC Role / Device Role / Timing Role: Zener reference in resistive divider feeding comparator input for brown-out detection. Use Value: Delivers stable 24 V reference with ≤55 Ω dynamic impedance, ensuring reset assertion within 10 μs of supply dip. |
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 MMBZ5245BS-7-F | 24 V ±5 %, 225 mW, SOT23, 70 Ω rdif | Higher dynamic impedance reduces regulation precision in low-current sensing | Preferred when tighter batch consistency is needed due to ON Semi's tighter process control on Zener spread |
| Vishay BZX84-C24-TP | 24 V ±5 %, 300 mW, SOT23, 50 Ω rdif, automotive-qualified (-Q variant available) | Higher power rating allows extended DC operation at elevated ambient temperatures | Chosen for industrial control panels requiring AEC-Q200 compliance or extended lifetime validation |
Compared with BZX84-C24,215, MMBZ5245BS-7-F trades regulation precision for broader vendor availability, while BZX84-C24-TP offers higher power headroom and qualification pedigree - making the original optimal for cost-sensitive, space-constrained 24 V reference designs where 250 mW and 55 Ω performance are sufficient.
Availability
BZX84-C24,215 is available at Aetrix Electronics and suitable for industrial sensor interfaces, USB port protection circuits, PLC input stages, and microcontroller reset networks requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZX84-C24,215 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 manufacturing rooted in process innovation and automotive-grade quality systems.
The BZX84 series belongs to Nexperia's precision Zener diode product line, engineered specifically for low-power voltage reference and overvoltage clamping in space-constrained industrial and consumer electronics.
FAQ
What is the maximum continuous reverse current this diode can sustain at 25 °C ambient?
The BZX84-C24,215 does not specify a maximum continuous reverse current; instead, its DC operation is limited by power dissipation. At 25 °C ambient on an FR4 PCB, it sustains up to 10.4 mA reverse current continuously (24 V × 10.4 mA = 250 mW), assuming ideal thermal conditions and no derating.
Can this Zener diode be used in a forward-biased configuration for ESD protection?
Yes - with ≤0.9 V forward voltage at 10 mA, the BZX84-C24,215 provides low-threshold clamping in forward bias, making it suitable for bidirectional TVS-like protection on low-voltage signal lines when paired with series impedance, though its 200 mA absolute maximum forward current limits energy absorption.
How does the 22.8 V to 25.6 V Zener voltage range impact circuit design?
This ±5 % tolerance band requires design margins: for a 24 V reference, the actual regulation point may vary by ±1.2 V, so feedback dividers and comparator thresholds must accommodate 22.8–25.6 V to ensure functional correctness across production lots and temperature extremes.
Is pin 2 truly unused, or does it serve a mechanical or thermal function?
Pin 2 is electrically unconnected (n.c.) per Nexperia's official pinning diagram and internal construction - it has no electrical role. While it may provide minor mechanical stability during handling, it must not be soldered or tied to any net, as doing so risks internal shorting or thermal stress-induced failure.
BZX84-C24,215 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX84
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 24 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 70 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 16.8 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BZX84-C24,215 FAQ
1.How can I place an order for BZX84-C24,215 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84-C24,215 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 BZX84-C24,215 reliable?
The price and inventory of BZX84-C24,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84-C24,215 is usually 5 days.
3.What payment methods are accepted for BZX84-C24,215?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-C24,215 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84-C24,215?
BZX84-C24,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84-C24,215 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 BZX84-C24,215?
For technical support, including BZX84-C24,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-C24,215 requirements.
6.How does Aetrix verify that BZX84-C24,215 is sourced from the original manufacturer or authorized distributors?
All BZX84-C24,215 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 BZX84-C24,215 meets industry standards.
7.What is the process for return or replacement of BZX84-C24,215?
All BZX84-C24,215 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-C24,215, 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 BZX84-C24,215 part is unused and in its original packaging.
Return procedure for BZX84-C24,215:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84-C24,215 Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
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onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
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SMAJ4744A-TP
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BZT52C3V6LP-7
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SMAZ12-13-F
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