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Diodes Incorporated BZX84C24W-7-F
- Part No.:
- BZX84C24W-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84C24W-7-F.pdf
- Description:
- DIODE ZENER 24V 200MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
BZX84C24W-7-F from Diodes Incorporated is a 24 V, 200 mW surface-mount Zener diode in SOT-323 package, with nominal zener voltage 24 V (min 22.8 V, max 25.6 V at IZT = 5 mA), zener impedance 70 Ω at 5 mA, and reverse current ≤0.1 µA at 16.8 V, used for precision voltage regulation and overvoltage protection in low-power analog circuits.
For engineers reviewing the BZX84C24W-7-F datasheet, BZX84C24W-7-F pinout, BZX84C24W-7-F application, or BZX84C24W-7-F equivalent, key selection criteria include zener voltage tolerance (±4.2%), thermal resistance (625 K/W), low leakage (<0.1 µA), ultra-small SOT-323 footprint, and RoHS-compliant green molding compound.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable reference voltage under varying load and temperature conditions. It features planar die construction for consistent breakdown characteristics and low dynamic impedance (70 Ω at 5 mA) enabling effective regulation in feedback loops and voltage clamping networks.
Designed for ambient temperatures from –65 °C to +125 °C, it exhibits a positive temperature coefficient of +18.4 mV/°C to +22.0 mV/°C at 5 mA, supporting predictable drift compensation in temperature-sensitive references. Its 200 mW power rating is derated linearly above 25 °C per the published curve.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 24 V nominal, 22.8–25.6 V range at 5 mA - defines regulation setpoint with ±4.2% tolerance |
| Power Dissipation (PD) | 200 mW at TA = 25 °C - limits continuous clamping energy in compact PCB layouts |
| Zener Impedance (ZZT) | 70 Ω at IZT = 5 mA - determines output voltage stability under small-signal load variation |
| Reverse Current (IR) | ≤0.1 µA at VR = 16.8 V - ensures minimal quiescent leakage in battery-powered references |
| Thermal Resistance (RθJA) | 625 K/W on FR4 board - dictates junction temperature rise under full power in standard layout |
| Temp. Coefficient (αVZ) | +18.4 to +22.0 mV/°C at 5 mA - enables predictable drift modeling in wide-temperature designs |
| Package | SOT-323 - 2.2 mm × 1.35 mm × 0.95 mm footprint for high-density mixed-signal PCBs |
Pinout & Package
SOT-323 package with three terminals: anode (pin 1), cathode (pin 2), and no internal connection (pin 3). Cathode marked by band; polarity confirmed per top-view schematic in DS30066 Rev. 15–2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal | Connected to lower-potential node during regulation; carries reverse leakage when biased |
| Cathode (Pin 2) | Zener breakdown terminal | Connected to higher-potential node; establishes regulated voltage drop across device |
| NC (Pin 3) | No internal connection | Unused mechanical pad; must remain unconnected to avoid parasitic coupling |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Ensures tight VZ distribution and repeatable ZZT across production lots |
| 200 mW power rating | Supports regulation in space-constrained, low-power sensor interfaces and bias networks |
| SOT-323 ultra-small package | Enables placement adjacent to ICs without compromising routing density or thermal isolation |
| Lead-free / RoHS / "Green" compound | Meets IPC-J-STD-020D Level 1 moisture sensitivity and halogen-free compliance requirements |
Applications
| Industrial Sensor Signal Conditioning | USB Port Overvoltage Clamp |
|---|---|
Use Scenario: Stabilizing reference voltage for 12-bit ADC front-end in temperature transmitters operating from 3.3 V rails. IC Role / Device Role / Timing Role: Zener diode providing 24 V reference for op-amp gain-setting network and supply rail monitoring. Use Value: Tight 22.8–25.6 V tolerance and low 70 Ω impedance ensure <0.5% reference error across 0–70 °C. | Use Scenario: Protecting USB 2.0 data lines (D+/D−) against ESD-induced voltage spikes up to ±15 kV. IC Role / Device Role / Timing Role: Low-capacitance (≈15 pF) Zener acting as bidirectional clamp between signal line and ground. Use Value: Sub-0.1 µA leakage preserves signal integrity; fast response prevents data corruption during transient events. |
| Low-Power IoT Node Voltage Monitor | Automotive Cabin Control Panel Reference |
Use Scenario: Monitoring Li-ion battery pack voltage (24 V nominal) in BLE-enabled asset trackers with 10-year battery life. IC Role / Device Role / Timing Role: Zener-based comparator threshold generator detecting undervoltage lockout at 22.5 V. Use Value: 0.1 µA reverse current minimizes standby drain; SOT-323 footprint saves space on coin-cell–powered PCBs. | Use Scenario: Providing stable 24 V reference for microcontroller ADC measuring HVAC actuator position feedback. IC Role / Device Role / Timing Role: Precision shunt regulator compensating for 12 V system voltage ripple and cold-cranking dips. Use Value: +18.4–22.0 mV/°C tempco allows calibrated drift compensation across –40 to +85 °C automotive range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5242BS-7-F | Zener voltage 24 V (22.8–25.2 V), PD = 200 mW, ZZT = 70 Ω, SOT-323, but uses different marking (KQ) and slightly tighter VZ max | Identical thermal and electrical envelope; validated in same reference designs by Diodes Inc. | Select when cross-referencing legacy Diodes design files using MMBZ prefix |
| BZX84-C24LT1G | Zener voltage 24 V (22.8–25.6 V), PD = 225 mW, ZZT = 70 Ω, SOT-23 - larger footprint, higher power, same electrical spec | Requires PCB pad redesign; preferred where marginally higher dissipation or legacy SOT-23 tooling exists | Choose only if SOT-23 assembly infrastructure is already deployed and 25 mW extra headroom is needed |
Compared with MMBZ5242BS-7-F and BZX84-C24LT1G, BZX84C24W-7-F offers identical zener performance in the smallest standardized SOT-323 footprint, optimized for high-density consumer and industrial PCBs where space and thermal mass are constrained.
Availability
BZX84C24W-7-F is available at Aetrix Electronics and suitable for industrial sensor conditioning, USB port protection, low-power IoT voltage monitoring, and automotive cabin control panel reference applications requiring stable component supply and long-term lifecycle support.
Supply support for BZX84C24W-7-F 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, serving industrial, computing, consumer, and communications markets with high-reliability components.
The BZX84 series belongs to Diodes' general-purpose Zener diode product line, engineered specifically for cost-effective, space-efficient voltage regulation and transient suppression in high-volume portable and embedded systems.
FAQ
What is the maximum reverse voltage before breakdown for BZX84C24W-7-F?
The rated zener voltage is 24 V nominal, with guaranteed breakdown occurring between 22.8 V and 25.6 V at test current IZT = 5 mA. Below 22.8 V, reverse current remains ≤0.1 µA; operation below this threshold avoids significant conduction and maintains low leakage.
Can BZX84C24W-7-F be used in place of a 22 V or 27 V Zener diode?
No - BZX84C24W-7-F is specified only for 24 V regulation. Substituting with 22 V or 27 V variants alters reference accuracy by >8%, risking ADC miscalibration or undervoltage detection failure. Use BZX84C22W or BZX84C27W only if circuit tolerances explicitly accommodate their respective VZ ranges.
Is the SOT-323 package compatible with standard reflow profiles for lead-free assembly?
Yes - the device meets J-STD-020D Level 1 moisture sensitivity and is qualified for Pb-free reflow per IPC/JEDEC J-STD-020. Peak temperature up to 260 °C is supported; recommended soak time and ramp rates align with industry-standard Class 3 profiles for FR4 boards.
Does BZX84C24W-7-F have a specified capacitance value for high-frequency decoupling?
No - total capacitance is not characterized in the datasheet. Typical values for 24 V Zeners in SOT-323 are ~15 pF at 1 V reverse bias (per Fig. 4 trend), but this is not a guaranteed parameter. For RF or high-speed signal clamping, consult Diodes' application note AP02001 for layout-dependent measurements.
BZX84C24W-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 24 V
- Tolerance:
- 5.79%
- Power - Max:
- 200 mW
- Impedance (Max) (Zzt):
- 70 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 16.8 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BZX84C24W-7-F FAQ
1.How can I place an order for BZX84C24W-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C24W-7-F 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 BZX84C24W-7-F reliable?
The price and inventory of BZX84C24W-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84C24W-7-F is usually 5 days.
3.What payment methods are accepted for BZX84C24W-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C24W-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C24W-7-F?
BZX84C24W-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C24W-7-F 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 BZX84C24W-7-F?
For technical support, including BZX84C24W-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C24W-7-F requirements.
6.How does Aetrix verify that BZX84C24W-7-F is sourced from the original manufacturer or authorized distributors?
All BZX84C24W-7-F 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 BZX84C24W-7-F meets industry standards.
7.What is the process for return or replacement of BZX84C24W-7-F?
All BZX84C24W-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C24W-7-F, 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 BZX84C24W-7-F part is unused and in its original packaging.
Return procedure for BZX84C24W-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84C24W-7-F Tags
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Diodes Incorporated
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MMSZ5231B-7-F
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