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Diodes Incorporated DDZX24C-13
- Part No.:
- DDZX24C-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DDZX24C-13.pdf
- Description:
- DIODE ZENER 24V 300MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
DDZX24C-13 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 1 kHz, 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-compliant power management circuits.
For engineers reviewing the DDZX24C-13 datasheet, DDZX24C-13 pinout, DDZX24C-13 application, or DDZX24C-13 equivalent, this page provides verified electrical parameters, thermal derating behavior, SOT23 terminal mapping, AEC-Q101 qualification status, and direct alternatives with documented voltage/impedance/leakage trade-offs.
Technical Context
This device operates as a two-terminal shunt voltage regulator, maintaining stable output voltage across varying load currents via controlled reverse breakdown. Its sharp knee characteristics and low dynamic impedance (35 Ω @ 5 mA) enable high-accuracy feedback in LDOs and switching converter references.
Designed for automated SMT assembly, it features matte tin-annealed terminals compliant with MIL-STD-202, moisture sensitivity level 1, and UL 94V-0 molded plastic case. Thermal resistance is 417 °C/W junction-to-ambient on standard FR-4 layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 23.12–24.31 V at IZT = 5 mA - defines precise regulation band for 24 V rail monitoring |
| Zener Impedance (ZZT) | 35 Ω max @ 1 kHz - ensures minimal output voltage shift under dynamic load transients |
| Power Dissipation (PD) | 300 mW on FR-4 PCB - sets maximum continuous power handling without heatsinking |
| Reverse Leakage (IR) | ≤0.05 µA @ VR = 19 V - guarantees negligible error current in high-impedance reference paths |
| Operating Temp Range | −65 to +150 °C - supports under-hood automotive and industrial ambient conditions |
| Thermal Resistance (RθJA) | 417 °C/W - determines temperature rise per watt dissipated on standard layout |
Pinout & Package
SOT23 package: 3-pin surface-mount plastic case, 0.008 g weight, UL 94V-0 flammability rating, polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Current sink during forward bias; grounded node in shunt regulation | Connected to system ground or low-impedance return path in voltage reference circuits |
| Cathode (Pin 2) | Zener breakdown terminal; voltage sensing node | Connected to regulated rail or feedback divider; carries full zener current |
| No Connect (Pin 3) | Internal die attach pad - electrically isolated | Thermally conductive but not bonded to active circuitry; may be left floating or tied to ground for thermal relief |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics use including engine control and body modules |
| Tight VZ tolerance | ±2.5% total variation (23.12–24.31 V) enables single-supply 24 V system calibration without trimming |
| Low leakage current | <0.05 µA at 19 V supports nanoamp-level standby current budgets in battery-powered systems |
| Sharp breakdown knee | Enables stable regulation even at sub-mA bias currents, critical for low-power sensor interfaces |
| Lead-free & halogen-free | Complies with RoHS 2 and JEDEC J-STD-020 Level 1 - suitable for green manufacturing and export compliance |
Applications
| Automotive Engine Control Unit (ECU) Reference | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Providing stable 24 V reference for ADC biasing and sensor excitation in diesel ECU power supply rails. IC Role / Device Role / Timing Role: Shunt voltage reference establishing precision threshold for overvoltage detection and microcontroller reset generation. Use Value: Maintains ±0.3 V regulation accuracy across −40 to +125 °C ambient, enabling reliable fault flagging without external trimming. |
Use Scenario: Clamping transient surges on 24 V analog input channels of programmable logic controllers. IC Role / Device Role / Timing Role: Overvoltage protection element limiting input voltage to downstream op-amps and ADC front-ends. Use Value: Responds within nanoseconds to 1 kV/µs transients while adding <1 pF capacitance - preserving signal integrity up to 100 kHz bandwidth. |
| Medical Infusion Pump Power Monitoring | Telecom Remote Radio Unit (RRU) Bias Supply |
Use Scenario: Monitoring 24 V DC bus voltage in battery-backed infusion pumps to trigger low-voltage alarms before shutdown. IC Role / Device Role / Timing Role: Precision voltage sense node feeding comparator hysteresis circuit for battery state-of-charge estimation. Use Value: Delivers 0.05 µA leakage at 19 V - avoids loading high-resistance voltage dividers used in ultra-low-power monitoring paths. |
Use Scenario: Setting bias point for GaN FET gate drivers in 24 V-powered remote radio units operating at −30 to +60 °C. IC Role / Device Role / Timing Role: Stable reference source for current-sense amplifier offset calibration in RF power amplifiers. Use Value: 35 Ω zener impedance ensures <10 mV output variation under 100 mA load step - critical for PA linearity stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C24LT1G | VZ = 22.8–25.2 V (±5%), ZZT = 80 Ω max @ 5 mA, PD = 300 mW | Wider voltage tolerance and higher impedance reduce accuracy in precision feedback loops | Select when cost sensitivity outweighs regulation tightness; verify loop stability with higher ZZ |
| MMSZ4686T1G | VZ = 23.0–25.0 V (±5%), ZZT = 100 Ω max @ 5 mA, PD = 500 mW | Higher power rating allows greater surge handling but larger impedance degrades AC regulation | Prefer for transient-heavy environments where short-duration overloads exceed 300 mW limits |
Compared with DDZX24C-13, BZX84-C24LT1G offers lower unit cost but sacrifices 2.5× higher zener impedance and looser voltage tolerance, while MMSZ4686T1G trades regulation precision for 67% higher steady-state power capacity - making DDZX24C-13 optimal for accuracy-critical 24 V reference designs.
Availability
DDZX24C-13 is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC analog inputs, medical infusion pump monitoring, and telecom RRU bias supplies requiring stable component supply with AEC-Q101 qualification and tight 24 V regulation.
Supply support for DDZX24C-13 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, with design, manufacturing, and sales operations across Asia, Europe, and the Americas.
The DDZX series targets high-reliability voltage reference applications in automotive and industrial systems, emphasizing AEC-Q101 qualification, tight zener tolerance, and robust SMT packaging for automated assembly.
FAQ
What is the maximum continuous reverse current DDZX24C-13 can handle without degradation?
DDZX24C-13 is rated for 300 mW power dissipation on FR-4 PCB at 25 °C ambient. At its nominal 24 V zener voltage, this corresponds to a maximum continuous reverse current of 12.5 mA (300 mW ÷ 24 V). Derating applies above 25 °C per the published curve - at 100 °C ambient, max current drops to ~7.2 mA.
Does DDZX24C-13 have a specified temperature coefficient for its zener voltage?
Yes - Figure 18 in the datasheet shows typical temperature coefficient (TC) of VZ for DDZX20C–DDZX30D devices. For DDZX24C, TC is approximately +0.07 %/°C near 25 °C, meaning VZ increases by ~17 mV per 10 °C rise. This positive TC is consistent across the 20–30 V range and enables predictable drift compensation in multi-Zener networks.
Can DDZX24C-13 be used in place of a 24 V Zener diode with different SOT23 pinout?
DDZX24C-13 follows standard SOT23 pinout: Pin 1 = Anode, Pin 2 = Cathode, Pin 3 = NC (die attach). It is mechanically and electrically compatible with other SOT23 Zeners using this configuration - such as BZX84-C24LT1G and MMSZ4686T1G - provided the cathode marking aligns and PCB footprint matches the 2.4 mm × 1.3 mm land pattern.
Is DDZX24C-13 suitable for use in life support equipment?
No - Diodes Incorporated explicitly prohibits use of DDZX24C-13 in life support devices or systems without express written approval from their CEO. The device is not certified to ISO 13485 or IEC 62304, and its AEC-Q101 qualification does not extend to safety-critical medical applications requiring redundant fault coverage or ASIL-D compliance.
DDZX24C-13 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-13 FAQ
1.How can I place an order for DDZX24C-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZX24C-13 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-13 reliable?
The price and inventory of DDZX24C-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZX24C-13 is usually 5 days.
3.What payment methods are accepted for DDZX24C-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZX24C-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZX24C-13?
DDZX24C-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZX24C-13 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-13?
For technical support, including DDZX24C-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZX24C-13 requirements.
6.How does Aetrix verify that DDZX24C-13 is sourced from the original manufacturer or authorized distributors?
All DDZX24C-13 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-13 meets industry standards.
7.What is the process for return or replacement of DDZX24C-13?
All DDZX24C-13 units undergo pre-shipment inspection (PSI). If there is an issue with DDZX24C-13, 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-13 part is unused and in its original packaging.
Return procedure for DDZX24C-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDZX24C-13 Tags
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Diodes Incorporated
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Diodes Incorporated
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