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Diodes Incorporated D3Z24BF-7
- Part No.:
- D3Z24BF-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-90, SOD-323F
- Datasheet:
-
D3Z24BF-7.pdf
- Description:
- DIODE ZENER 24.25V 400MW SOD323F
- Quantity:
- Payment:
- Shipping:
Inventory:5,928
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Product details
Overview
D3Z24BF-7 from Diodes Incorporated is a precision 24V Zener diode in SOD323F package, designed for voltage regulation and reference applications with ±2.2% tolerance (23.72–24.78 V at 5 mA), 400 mW power dissipation on FR-4 PCB, 30 Ω dynamic impedance at 5 mA, and -1.6 mV/°C temperature coefficient. It serves in power supply feedback loops, overvoltage protection circuits, and analog reference stages.
For engineers reviewing the D3Z24BF-7 datasheet, D3Z24BF-7 pinout, D3Z24BF-7 application, or D3Z24BF-7 equivalent, key selection criteria include Zener voltage accuracy, thermal stability in compact layouts, low leakage (<0.05 µA at 19 V), and compatibility with automated SMT assembly on space-constrained boards.
Technical Context
This device operates as a two-terminal shunt regulator, maintaining stable output voltage across varying load currents by conducting reverse current above its specified breakdown threshold. Its tight 2.2% VZ tolerance and low 30 Ω ZZT ensure minimal regulation error under dynamic load conditions.
The -1.6 mV/°C temperature coefficient enables predictable drift compensation in temperature-sensitive references, while the 18 pF junction capacitance supports stable operation up to mid-frequency signal conditioning without parasitic resonance concerns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 23.72–24.78 V at 5 mA - defines precise regulation point for feedback networks |
| Power Dissipation (PD) | 400 mW on FR-4 PCB - sets maximum continuous power handling in standard layout |
| Zener Impedance (ZZT) | 30 Ω at 5 mA - ensures low output impedance for stable voltage reference under load variation |
| Reverse Leakage (IR) | <0.05 µA at 19 V - minimizes quiescent current loss in high-impedance bias networks |
| Temp. Coefficient (TC) | -1.6 mV/°C - enables predictable voltage drift correction in ambient-varying environments |
| Junction Capacitance (CJ) | 18 pF at 0 V - limits high-frequency noise coupling in precision analog signal paths |
| Forward Voltage (VF) | 0.9 V at 10 mA - defines forward conduction threshold for bidirectional protection use cases |
Pinout & Package
Package: SOD323F - ultra-compact surface-mount plastic package (1.25 mm × 1.70 mm × 0.95 mm), halogen- and antimony-free, moisture sensitivity level 1, matte tin-plated copper alloy leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Positive terminal in forward bias; connected to lower-potential node in Zener mode | Provides current entry path during forward conduction; referenced to ground in shunt regulation |
| Cathode | Negative terminal in forward bias; marked with band; higher-potential node in Zener mode | Connected to regulated voltage rail; carries reverse current during breakdown operation |
Key Features
| Feature | Design Value |
|---|---|
| Precision voltage regulation | ±2.2% VZ tolerance enables <1% system-level reference error in closed-loop supplies |
| Automated assembly compatibility | SOD323F footprint and matte tin finish ensure reliable reflow soldering and AOI inspection |
| Thermal stability | -1.6 mV/°C TC allows predictable drift compensation in industrial temperature ranges (-40°C to +125°C) |
| Low leakage performance | <0.05 µA reverse current at 19 V preserves battery life in always-on monitoring circuits |
| Green compliance | Halogen- and antimony-free, RoHS 3 compliant, UL 94V-0 rated - meets automotive and medical regulatory requirements |
Applications
| Power Supply Feedback Loop | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Regulating output voltage in isolated DC-DC converters using optocoupler feedback. IC Role / Device Role / Timing Role: Shunt reference providing stable 24V setpoint to TL431 or similar error amplifier. Use Value: Tight 2.2% VZ tolerance maintains ±0.5% output regulation across line/load/temperature variations. |
Use Scenario: Protecting microcontroller I/O pins from transient surges exceeding 24V. IC Role / Device Role / Timing Role: Clamping element diverting excess energy to ground before damage occurs. Use Value: 30 Ω ZZT ensures rapid clamping response with minimal overshoot during 100 ns transients. |
| Analog Sensor Reference | Industrial Current Loop Bias |
Use Scenario: Providing excitation voltage for 4–20 mA pressure transducers in process control systems. IC Role / Device Role / Timing Role: Precision voltage source stabilizing bridge excitation in ratiometric measurement chains. Use Value: -1.6 mV/°C TC aligns with typical strain gauge drift, reducing net system error to <0.02%/°C. |
Use Scenario: Generating stable 24V bias for HART modem communication circuitry in field instruments. IC Role / Device Role / Timing Role: Low-noise, low-drift reference enabling clean FSK signal modulation. Use Value: 18 pF CJ prevents RF interference coupling into 1200/2200 Hz HART signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B24,115 (Nexperia) | Same 24V nominal, ±5% tolerance (22.8–25.2 V), 300 mW PD, 50 Ω ZZT | Higher regulation error and impedance reduce accuracy in precision feedback loops | Select when cost sensitivity outweighs regulation accuracy and thermal stability requirements |
| MMSZ4686T1G (onsemi) | 24V nominal, ±5% tolerance, 500 mW PD, 40 Ω ZZT, SOD-123 package (larger footprint) | Larger package increases board area; higher power rating unnecessary for most 24V reference uses | Prefer only if legacy SOD-123 layout reuse or higher pulse power margin is required |
Compared with BZX384-B24 and MMSZ4686T1G, D3Z24BF-7 delivers superior voltage accuracy (±2.2% vs. ±5%), lower dynamic impedance (30 Ω vs. ≥40 Ω), and optimized thermal behavior (-1.6 mV/°C) in the smallest SOD323F footprint-making it ideal for high-density, precision-regulated designs.
Availability
D3Z24BF-7 is available at Aetrix Electronics and suitable for power supply feedback loops, overvoltage protection clamps, and analog sensor reference circuits requiring stable component supply, consistent parametric performance, and full RoHS 3 compliance.
Supply support for D3Z24BF-7 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, specializing in high-reliability, application-optimized components for industrial, automotive, and computing markets.
D3Z24BF-7 belongs to Diodes' precision Zener diode family engineered for voltage reference and regulation in space-constrained, thermally demanding applications-emphasizing tight tolerance, low TC, and green manufacturing compliance.
FAQ
What is the maximum continuous power dissipation for D3Z24BF-7 on a standard PCB?
D3Z24BF-7 is rated for 400 mW continuous power dissipation when mounted on an FR-4 PCB with the recommended 35 mm × 25 mm pad layout. Derating begins above +25°C ambient per the published curve, reaching zero power at +150°C.
Does D3Z24BF-7 meet automotive qualification standards?
D3Z24BF-7 itself is not AEC-Q101 qualified; however, Diodes offers automotive-grade variants of this series (e.g., D3Z24BFAQ) with PPAP capability, manufactured in IATF 16949-certified facilities. Standard D3Z24BF-7 is suitable for industrial and commercial applications.
How does the cathode band marking align with the SOD323F package outline?
The cathode band on D3Z24BF-7 is located on the top surface adjacent to Pin 1 (cathode), aligned with the flat edge of the SOD323F body. Per Diodes' package drawing, the band corresponds to the side with dimension L1 = 0.40 mm and matches the "Cathode Band" designation in mechanical data.
Can D3Z24BF-7 be used in bidirectional ESD protection configurations?
No-D3Z24BF-7 is a unidirectional Zener diode optimized for reverse-bias regulation. For bidirectional ESD protection, Diodes recommends dedicated TVS arrays like D24Z3 or AP7175 series, which provide symmetrical clamping in both polarities with defined breakdown and low capacitance.
D3Z24BF-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-90, SOD-323F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 24.25 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 19 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323F
D3Z24BF-7 FAQ
1.How can I place an order for D3Z24BF-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for D3Z24BF-7 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 D3Z24BF-7 reliable?
The price and inventory of D3Z24BF-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for D3Z24BF-7 is usually 5 days.
3.What payment methods are accepted for D3Z24BF-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for D3Z24BF-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for D3Z24BF-7?
D3Z24BF-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your D3Z24BF-7 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 D3Z24BF-7?
For technical support, including D3Z24BF-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your D3Z24BF-7 requirements.
6.How does Aetrix verify that D3Z24BF-7 is sourced from the original manufacturer or authorized distributors?
All D3Z24BF-7 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 D3Z24BF-7 meets industry standards.
7.What is the process for return or replacement of D3Z24BF-7?
All D3Z24BF-7 units undergo pre-shipment inspection (PSI). If there is an issue with D3Z24BF-7, 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 D3Z24BF-7 part is unused and in its original packaging.
Return procedure for D3Z24BF-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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