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Diodes Incorporated DDZX24C-7
- Part No.:
- DDZX24C-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DDZX24C-7.pdf
- Description:
- DIODE ZENER 24V 300MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,224
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Product details
Overview
DDZX24C-7 from Diodes Incorporated is a surface-mount precision Zener diode in SOT23 package, rated for 24 V nominal zener voltage (23.12–24.31 V), 5 mA test current, 35 Ω maximum zener impedance at 5 mA, and 300 mW power dissipation on FR-4 PCB. It delivers tight voltage tolerance and low leakage (<0.05 µA at 19 V) for voltage reference and regulation in automotive and industrial power rails.
For engineers reviewing the DDZX24C-7 datasheet, DDZX24C-7 pinout, DDZX24C-7 application, or DDZX24C-7 equivalent, this part is selected for stable low-power voltage clamping, precision biasing in analog front-ends, and overvoltage protection where AEC-Q101 reliability and <1% VZ tolerance are required.
Technical Context
This device operates as a two-terminal shunt regulator with sharp reverse breakdown characteristics and temperature-stable performance across –65°C to +150°C. Its 24 V nominal zener voltage falls in the positive temperature coefficient region (≈+0.08%/°C), enabling predictable drift compensation in reference circuits.
The SOT23 package supports automated assembly and provides 417°C/W junction-to-ambient thermal resistance on standard FR-4 layout. It exhibits 0.5 µA maximum reverse current at 19 V and maintains ≤200 Ω dynamic impedance up to 100 mA transient current per typical curves.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 23.12–24.31 V at IZT = 5 mA - defines precise clamping threshold for 24 V rail monitoring |
| Power Dissipation (PD) | 300 mW on FR-4 PCB - sets maximum continuous power handling without heatsinking |
| Zener Impedance (ZZT) | 35 Ω max at 5 mA - ensures minimal output voltage variation under load changes |
| Reverse Leakage (IR) | 0.05 µA max at VR = 19 V - enables ultra-low standby current in battery-backed circuits |
| Thermal Resistance (RθJA) | 417°C/W - determines junction temperature rise under steady-state power dissipation |
| Operating Temperature | –65°C to +150°C - supports deployment in under-hood automotive and industrial environments |
| AEC-Q101 Qualified | Yes - validated for high-reliability automotive applications per stress test requirements |
Pinout & Package
SOT23 package: 3-pin surface-mount plastic case with matte tin annealed terminals; polarity marked by cathode band; weight ≈0.008 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Current sink terminal in reverse bias | Connected to lower-potential node (e.g., ground or return path) during regulation |
| Cathode (Pin 2) | Current source terminal in reverse bias | Connected to regulated voltage node; carries full zener current during clamping |
| No-connect (Pin 3) | Internal die attach pad | Electrically isolated; serves mechanical anchoring only - must not be connected |
Key Features
| Feature | Design Value |
|---|---|
| Very tight VZ tolerance | ±2.5% (23.12–24.31 V range) - reduces need for post-assembly calibration in reference designs |
| Low zener impedance | 35 Ω max at 5 mA - improves line and load regulation in feedback loops |
| AEC-Q101 qualification | Qualified for automotive-grade reliability - meets stress testing for temperature cycling, HTRB, and ESD |
| Green, RoHS-compliant construction | Halogen- and antimony-free molding compound (UL 94V-0) - satisfies environmental compliance for global markets |
| Automated assembly compatibility | SOT23 footprint with J-STD-020 Level 1 moisture sensitivity - enables high-yield pick-and-place manufacturing |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Stable 24 V rail monitoring in BCM power management subsystems. IC Role / Device Role / Timing Role: Shunt voltage reference for ADC input scaling and overvoltage detection circuitry. Use Value: Tight ±2.5% VZ tolerance eliminates calibration steps; AEC-Q101 rating ensures operation across –40°C to +125°C ambient. |
Use Scenario: Precision biasing of bridge sensor amplifiers in factory automation transmitters. IC Role / Device Role / Timing Role: Low-drift voltage reference for op-amp gain-setting networks and excitation sources. Use Value: 35 Ω zener impedance minimizes gain error under varying load; 0.05 µA leakage preserves microamp-level sensor bias accuracy. |
| Telecom Power Supply Supervision | Medical Diagnostic Equipment Reference |
|
Use Scenario: Undervoltage lockout (UVLO) and overvoltage protection in 24 V telecom DC/DC converters. IC Role / Device Role / Timing Role: Fast-response clamp element in comparator-based fault detection circuits. Use Value: Sharp breakdown onset ensures rapid triggering at 23.12 V; 300 mW rating handles transient surges without degradation. |
Use Scenario: Isolated analog front-end reference for ECG/EEG signal acquisition channels. IC Role / Device Role / Timing Role: Low-noise, low-leakage voltage reference for differential amplifier offset trimming. Use Value: Sub-0.1 µA leakage prevents input bias current errors; green RoHS compliance meets IEC 60601-1 medical safety requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C24LT1G | 24.2–25.8 V VZ range (±3.3%), 80 Ω ZZT, same SOT23 package | Higher impedance and wider tolerance reduce accuracy in precision references | Select when cost priority outweighs tight regulation; verify loop stability with higher ZZ |
| MMSZ5242BT1G | 22.8–25.2 V VZ range (±5%), 30 Ω ZZT, SOD-123 package | SOD-123 footprint requires PCB redesign; wider tolerance impacts calibration yield | Choose only if board space constraints favor smaller package and ±5% VZ is acceptable |
Compared with BZX84-C24LT1G and MMSZ5242BT1G, DDZX24C-7 offers superior voltage accuracy (±2.5% vs. ±3.3%/±5%) and lower thermal resistance (417°C/W vs. ~500°C/W), making it optimal for high-stability reference designs where board area and long-term drift matter.
Availability
DDZX24C-7 is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor transmitters, telecom power supervision systems, and medical diagnostic equipment requiring stable component supply and AEC-Q101 compliance.
Supply support for DDZX24C-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 ICs, specializing in high-reliability components for automotive, industrial, and computing applications.
DDZX24C-7 belongs to the DDZX series of precision Zener diodes, designed specifically for stable voltage reference and regulation in harsh-environment applications demanding AEC-Q101 qualification and tight parametric control.
FAQ
What is the maximum continuous power dissipation for DDZX24C-7 on standard FR-4 PCB?
The DDZX24C-7 is rated for 300 mW continuous power dissipation when mounted on FR-4 PCB using Diodes Incorporated's recommended pad layout. This value assumes ambient temperature of +25°C and accounts for thermal resistance of 417°C/W. Derating is required above +25°C per the published power derating curve (Fig. 1).
Does DDZX24C-7 have automotive qualification?
Yes, DDZX24C-7 is qualified to AEC-Q101 standards for high-reliability automotive applications. It has passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and electrostatic discharge (ESD) per the AEC-Q101-001 and -002 specifications, as documented in Diodes Incorporated's qualification reports.
What is the zener voltage temperature coefficient for DDZX24C-7?
DDZX24C-7 exhibits a positive temperature coefficient of approximately +0.08%/°C, consistent with other 24 V Zeners in the DDZX series (see Fig. 18). This allows predictable, linear drift over temperature and enables compensation in reference circuits using complementary TC components.
Can DDZX24C-7 be used in place of DDZX24C-13?
Yes - DDZX24C-7 and DDZX24C-13 share identical electrical and thermal specifications; the suffix denotes packaging only: "-7" indicates 3,000-unit tape-and-reel, while "-13" indicates 10,000-unit tape-and-reel. Both use the same SOT23 die and marking code "PL", and are interchangeable in design.
DDZX24C-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 24 V
- Tolerance:
- ±3%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 35 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 19 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:
- SOT-23-3
DDZX24C-7 FAQ
1.How can I place an order for DDZX24C-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZX24C-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 DDZX24C-7 reliable?
The price and inventory of DDZX24C-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZX24C-7 is usually 5 days.
3.What payment methods are accepted for DDZX24C-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZX24C-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZX24C-7?
DDZX24C-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZX24C-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 DDZX24C-7?
For technical support, including DDZX24C-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZX24C-7 requirements.
6.How does Aetrix verify that DDZX24C-7 is sourced from the original manufacturer or authorized distributors?
All DDZX24C-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 DDZX24C-7 meets industry standards.
7.What is the process for return or replacement of DDZX24C-7?
All DDZX24C-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZX24C-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 DDZX24C-7 part is unused and in its original packaging.
Return procedure for DDZX24C-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDZX24C-7 Tags
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Diodes Incorporated
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