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Diodes Incorporated DDZ14BQ-7
- Part No.:
- DDZ14BQ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
DDZ14BQ-7.pdf
- Description:
- DIODE ZENER 14.26V 470MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:5,367
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Product details
Overview
DDZ14BQ-7 from Diodes Incorporated is a precision automotive-grade Zener diode in SOD123 package, with nominal zener voltage 14.25 V (min 13.89 V, max 14.62 V) at 10 mA test current, 16 Ω zener impedance at 10 mA, and 0.05 µA reverse leakage at 11.0 V. It delivers stable voltage reference in power supply feedback loops, overvoltage protection circuits, and analog sensor biasing for industrial control modules.
For engineers reviewing the DDZ14BQ-7 datasheet, DDZ14BQ-7 pinout, DDZ14BQ-7 application, or DDZ14BQ-7 equivalent, key selection criteria include zener voltage tolerance (±2.6%), low dynamic impedance, AEC-Q101 qualification, thermal resistance (425 °C/W on minimal pad), and SOD123 footprint compatibility with automated SMT assembly.
Technical Context
This device operates as a two-terminal voltage reference, conducting in reverse breakdown to clamp or regulate voltage with tight VZ tolerance and low temperature coefficient (≈+0.07 %/°C near 14 V). Its 10 mA zener test current and 16 Ω dynamic impedance ensure predictable regulation under moderate load transients.
Designed for automotive environments, it features IATF16949 manufacturing, PPAP capability, and halogen/antimony-free "Green" molding compound rated UL 94V-0. Moisture sensitivity level is J-STD-020 Level 1, enabling standard reflow without baking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 13.89 V to 14.62 V at IZT = 10 mA - ensures ±2.6% regulation accuracy across production lot |
| Zener Impedance (ZZT) | 16 Ω at IZT = 10 mA - maintains stable output under small-signal load variations |
| Reverse Leakage (IR) | 0.05 µA at VR = 11.0 V - minimizes quiescent current in high-impedance bias networks |
| Power Dissipation (PD) | 294 mW at TA = +25°C on minimal pad - defines maximum continuous DC power in compact layouts |
| Thermal Resistance (RθJA) | 425 °C/W - determines junction temperature rise per milliwatt in standard FR-4 mounting |
| Operating Temperature | –65 °C to +150 °C - supports under-hood and industrial ambient conditions |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test requirements including HTGB, HTRB, and TCT |
Pinout & Package
Package: SOD123 surface-mount plastic package with cathode band marking; dimensions: 2.65 mm × 1.55 mm × 1.05 mm (L × W × H); weight ≈ 0.01 g; matte tin-plated alloy 42 leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Reference ground node | Connected to system ground or lower-potential rail; forms return path during reverse-bias regulation |
| Cathode | Zener breakdown terminal / Regulated output node | Connected to voltage node requiring clamping or reference; carries reverse current during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Tight VZ tolerance | ±2.6% at 10 mA enables precise feedback in 12 V–15 V power supplies without trimming |
| AEC-Q101 qualification | Validated for automotive use with PPAP documentation support and IATF16949 traceability |
| Low ZZT (16 Ω) | Minimizes output voltage deviation under ±1 mA load shifts in sensor reference circuits |
| Halogen- and antimony-free | Meets <900 ppm Br, <900 ppm Cl, <1000 ppm Sb - compliant with EU environmental directives |
| SOD123 footprint | Standardized 2-pin SMT outline compatible with high-speed pick-and-place and AOI inspection |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Analog Input Stage |
|---|---|
|
Use Scenario: Voltage reference for 12 V battery-sensed ADC channel in BCM microcontroller. IC Role / Device Role / Timing Role: Provides stable 14.25 V reference to scale battery voltage measurement range. Use Value: Enables ±0.3 V absolute accuracy over –40 °C to +125 °C due to low TC and AEC-Q101 validation. |
Use Scenario: Overvoltage clamp on 4–20 mA transmitter input protection circuit. IC Role / Device Role / Timing Role: Shunts transient surges above 14.6 V to protect op-amp front-end. Use Value: Limits fault energy with 294 mW dissipation margin and 16 Ω dynamic impedance for fast response. |
| Medical Infusion Pump Power Monitor | Telecom Remote Radio Unit (RRU) Bias Supply |
|
Use Scenario: Precision bias for isolated current-sense amplifier in battery-powered infusion pump. IC Role / Device Role / Timing Role: Supplies regulated 14.25 V to op-amp V+ rail for ratiometric sensing. Use Value: Delivers <0.05 µA leakage to preserve battery life over multi-year operation. |
Use Scenario: Reference node stabilization in GaN FET gate driver auxiliary supply. IC Role / Device Role / Timing Role: Maintains fixed threshold for UVLO detection in 12 V auxiliary rail. Use Value: Ensures consistent trip point across temperature via +0.07 %/°C TC and 10 mA test condition. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C15-7-F | Zener voltage 14.4–15.6 V (±4%), higher ZZT = 30 Ω, no AEC-Q101 qualification | Commercial-grade only; unsuitable for automotive PPAP or high-reliability industrial use | Select when cost is primary and automotive qualification is not required |
| MMSZ5243B-7-F | Zener voltage 13.0–14.0 V (±5%), ZZT = 20 Ω, JEDEC SOD-123 but not AEC-Q101 qualified | Limited VZ range coverage; lacks automotive change control and IATF16949 traceability | Use where tighter VZ tolerance and full automotive compliance are not mandatory |
Compared with BZX84-C15-7-F and MMSZ5243B-7-F, DDZ14BQ-7 offers superior voltage accuracy (±2.6% vs. ±4–5%), lower dynamic impedance (16 Ω vs. 20–30 Ω), and full automotive qualification-making it the only choice for safety-critical or PPAP-driven designs.
Availability
DDZ14BQ-7 is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC analog inputs, medical infusion pump monitors, and telecom remote radio unit bias supplies requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for DDZ14BQ-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and the Americas.
The DDZ series targets precision voltage reference applications in automotive and industrial systems, emphasizing tight VZ tolerance, AEC-Q101 compliance, and robust thermal performance in miniature SOD123 packaging.
FAQ
Is DDZ14BQ-7 RoHS and REACH compliant?
Yes. DDZ14BQ-7 is fully RoHS 3 (2015/863/EU) compliant with no purposely added lead, and meets REACH SVHC thresholds. It uses halogen- and antimony-free green molding compound containing <900 ppm bromine, <900 ppm chlorine, and <1000 ppm antimony compounds.
What is the maximum continuous reverse power dissipation at 105°C ambient?
At TA = +105°C, derated power dissipation is 175 mW based on the 425 °C/W RθJA curve (PD = (150°C − 105°C) / 425 °C/W = 0.106 W). This value assumes minimal copper pad layout per datasheet Note 8.
Does DDZ14BQ-7 have a specified temperature coefficient?
Yes. Per Figure 19, the typical temperature coefficient is +0.07 %/°C at VZ ≈ 14 V. This positive TC enables compensation pairing with negative-TC components in precision reference designs.
Can DDZ14BQ-7 be used in place of DDZ14B-7 in existing designs?
Yes - DDZ14BQ-7 is the automotive-qualified version of DDZ14B-7, sharing identical electrical specs, SOD123 package, and marking code KX. The "Q" suffix denotes AEC-Q101 qualification, PPAP capability, and IATF16949 manufacturing, with no electrical or mechanical differences.
DDZ14BQ-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 14.26 V
- Tolerance:
- ±3%
- Power - Max:
- 470 mW
- Impedance (Max) (Zzt):
- 16 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 11 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
DDZ14BQ-7 FAQ
1.How can I place an order for DDZ14BQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZ14BQ-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 DDZ14BQ-7 reliable?
The price and inventory of DDZ14BQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZ14BQ-7 is usually 5 days.
3.What payment methods are accepted for DDZ14BQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZ14BQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZ14BQ-7?
DDZ14BQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZ14BQ-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 DDZ14BQ-7?
For technical support, including DDZ14BQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZ14BQ-7 requirements.
6.How does Aetrix verify that DDZ14BQ-7 is sourced from the original manufacturer or authorized distributors?
All DDZ14BQ-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 DDZ14BQ-7 meets industry standards.
7.What is the process for return or replacement of DDZ14BQ-7?
All DDZ14BQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZ14BQ-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 DDZ14BQ-7 part is unused and in its original packaging.
Return procedure for DDZ14BQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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