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Diodes Incorporated DDZX13B-13
- Part No.:
- DDZX13B-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DDZX13B-13.pdf
- Description:
- DIODE ZENER 13V 300MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:8,582
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Product details
Overview
DDZX13B-13 from Diodes Incorporated is a surface-mount precision Zener diode in SOT23 package, rated for 13 V nominal zener voltage (12.55–13.21 V), 10 mA test current, 14 Ω zener impedance at IZT, and 300 mW power dissipation on FR-4 PCB. It delivers tight voltage tolerance and low leakage (<0.1 μA @ 10 V) for voltage reference and regulation in automotive-grade power management circuits.
For engineers reviewing the DDZX13B-13 datasheet, DDZX13B-13 pinout, DDZX13B-13 application, or DDZX13B-13 equivalent, this part is selected for stable low-power voltage clamping, precision biasing in sensor interfaces, and overvoltage protection in automotive ECUs where AEC-Q101 reliability and sharp breakdown characteristics are required.
Technical Context
This Zener diode operates in reverse-biased breakdown mode with tightly controlled VZ tolerance (±2.7% at 12.88 V nominal) and low dynamic impedance (14 Ω @ 10 mA), enabling accurate voltage referencing under varying load conditions. Its thermal resistance (RθJA = 417 °C/W) and derating curve support operation up to +150 °C ambient.
The device features ultra-low reverse leakage (0.1 μA @ 10 V), sharp knee characteristics, and is qualified to AEC-Q101 for high-reliability automotive applications. Polarity is defined by cathode marking on SOT23 package, with matte tin annealed terminals ensuring robust solderability per MIL-STD-202.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 12.55–13.21 V @ IZT = 10 mA - defines precise clamping threshold for 12 V rail regulation |
| Zener Impedance (ZZT) | 14 Ω @ 10 mA - ensures minimal output voltage variation under dynamic load changes |
| Power Dissipation (PD) | 300 mW on FR-4 PCB - supports continuous operation without heatsinking in space-constrained layouts |
| Reverse Leakage (IR) | 0.1 μA @ VR = 10 V - prevents parasitic current draw in battery-backed circuits |
| Operating Temperature | −65 to +150 °C - enables deployment in under-hood automotive environments |
| Thermal Resistance (RθJA) | 417 °C/W - informs thermal design margin when using standard SOT23 pad layout |
Pinout & Package
Package: SOT23 - surface-mount plastic case with matte tin annealed terminals; polarity indicated by cathode band; weight ≈ 0.008 g; moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal | Connected to lower-potential node during normal operation; used for forward-bias testing |
| Cathode (Pin 2) | Zener breakdown terminal | Connected to higher-potential node; defines regulated output voltage referenced to anode |
| Collector / NC (Pin 3) | Internal die attachment pad | Electrically connected to cathode in monolithic construction; serves as thermal path and mechanical anchor |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| Tight VZ tolerance | ±2.7% (12.55–13.21 V) enables single-supply reference without post-calibration |
| Low ZZT & sharp knee | 14 Ω @ 10 mA ensures stable regulation across 1–20 mA operating range |
| Green, RoHS-compliant construction | Halogen- and antimony-free molding compound (UL 94V-0) meets automotive environmental requirements |
| Automated assembly compatibility | SOT23 footprint and matte tin finish support high-yield reflow and wave soldering |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Voltage reference for analog-to-digital converter (ADC) inputs monitoring throttle position and coolant temperature. IC Role / Device Role / Timing Role: Precision Zener provides stable 13 V reference to ADC voltage divider network. Use Value: Enables ±0.5% measurement accuracy over −40 to +125 °C ambient due to low TC and tight VZ tolerance. |
Use Scenario: Biasing and clamping circuit for 4–20 mA transmitter front-end op-amps. IC Role / Device Role / Timing Role: Zener regulates op-amp supply rail and limits input overvoltage transients. Use Value: Prevents op-amp saturation during line surges while maintaining <1 μA quiescent error current. |
| Medical Portable Diagnostic Device | Telecom Power Sequencing Circuit |
|
Use Scenario: Reference source for low-power microcontroller internal ADC during battery-operated mode. IC Role / Device Role / Timing Role: Provides stable 13 V reference for voltage scaling of biosensor outputs. Use Value: Delivers <0.1 μA leakage at 10 V, extending battery life beyond 12 months in standby. |
Use Scenario: Voltage supervisor trigger element in multi-rail DC/DC sequencing logic. IC Role / Device Role / Timing Role: Zener breakdown initiates enable signal when 12 V rail reaches regulation. Use Value: Sharp knee characteristic ensures timing jitter <50 ns across production lots and temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C13 | Wider VZ tolerance (±5%), higher ZZT (30 Ω), no AEC-Q101 qualification | Acceptable for commercial-grade consumer electronics but not automotive or industrial safety-critical use | Select when cost is primary constraint and AEC-Q101 compliance is unnecessary |
| MMSZ5243B | VZ = 13 V ±5%, ZZT = 30 Ω, PD = 350 mW, no automotive qualification | Higher power rating but looser regulation; suitable for non-temperature-critical biasing | Choose only if board-level thermal margin allows higher impedance-induced drift |
Compared with BZX84-C13 and MMSZ5243B, DDZX13B-13 offers superior voltage stability (±2.7% vs. ±5%), lower dynamic impedance (14 Ω vs. ≥30 Ω), and guaranteed AEC-Q101 qualification-making it the sole choice for automotive and high-accuracy industrial references where long-term drift and thermal coefficient matter.
Availability
DDZX13B-13 is available at Aetrix Electronics and suitable for automotive engine control units, industrial sensor transmitters, medical diagnostic devices, and telecom power sequencers requiring stable component supply across extended temperature ranges and lifecycle commitments.
Supply support for DDZX13B-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 North America.
DDZX13B-13 belongs to the DDZX series of precision Zener diodes engineered specifically for automotive and industrial applications demanding AEC-Q101 reliability, tight voltage tolerance, and low-impedance regulation in compact SOT23 packages.
FAQ
What is the maximum continuous reverse voltage (VRWM) for DDZX13B-13?
The DDZX13B-13 has no specified VRWM; it is designed for operation in reverse breakdown. Its rated zener voltage (12.55–13.21 V) applies at IZT = 10 mA. For safe non-breakdown operation, reverse voltage must remain below the minimum VZ (12.55 V) to avoid entering conduction.
Is DDZX13B-13 compatible with lead-free reflow profiles?
Yes-DDZX13B-13 uses matte tin annealed terminals and is fully RoHS-compliant. It supports standard lead-free reflow profiles (peak temperature ≤260 °C, time above 217 °C ≤60 seconds) per J-STD-020, with moisture sensitivity level 1 requiring no dry-pack handling.
Does DDZX13B-13 have a specified temperature coefficient (TC) of VZ?
Yes-the datasheet Fig. 17 shows typical TC of VZ ≈ +0.06 %/°C for 13 V devices. This positive coefficient means VZ increases ~7.8 mV/°C near 25 °C, critical for high-accuracy reference designs requiring TC compensation.
Can DDZX13B-13 be used in place of a 12 V Zener diode?
No-DDZX13B-13 is specified for 12.55–13.21 V, not 12 V. Substituting it for a true 12 V Zener (e.g., DDZX12C) would raise the regulated voltage by ~1 V, potentially exceeding downstream IC absolute maximum ratings and invalidating system calibration.
DDZX13B-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):
- 13 V
- Tolerance:
- ±3%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 14 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 10 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
DDZX13B-13 FAQ
1.How can I place an order for DDZX13B-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZX13B-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 DDZX13B-13 reliable?
The price and inventory of DDZX13B-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZX13B-13 is usually 5 days.
3.What payment methods are accepted for DDZX13B-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZX13B-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZX13B-13?
DDZX13B-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZX13B-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 DDZX13B-13?
For technical support, including DDZX13B-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZX13B-13 requirements.
6.How does Aetrix verify that DDZX13B-13 is sourced from the original manufacturer or authorized distributors?
All DDZX13B-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 DDZX13B-13 meets industry standards.
7.What is the process for return or replacement of DDZX13B-13?
All DDZX13B-13 units undergo pre-shipment inspection (PSI). If there is an issue with DDZX13B-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 DDZX13B-13 part is unused and in its original packaging.
Return procedure for DDZX13B-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDZX13B-13 Tags
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