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Diodes Incorporated DDZ9711-7
- Part No.:
- DDZ9711-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
DDZ9711-7.pdf
- Description:
- DIODE ZENER 27V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:4,153
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Product details
Overview
DDZ9711-7 from Diodes Incorporated is a surface-mount low-current Zener diode with nominal zener voltage 27 V, ±5% tolerance (25.65–28.35 V), 500 mW power dissipation on FR-4 PCB at TL = +75°C, and specified test current of 50 µA - optimized for low-bias, battery-powered voltage reference and regulation in portable electronics.
For engineers reviewing the DDZ9711-7 datasheet, DDZ9711-7 pinout, DDZ9711-7 application, or DDZ9711-7 equivalent, this device serves as a precision, low-leakage (≤50 nA @ VR = 20.4 V) voltage clamp in power supply feedback paths, analog sensor biasing, and overvoltage protection circuits where SOD123 footprint and thermal stability are critical.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load and temperature conditions. Its 27 V nominal zener voltage falls within the positive temperature coefficient range (+0.08 %/°C typical per Fig. 19), minimizing drift in mid-to-high voltage reference designs.
Designed for surface-mount assembly on standard FR-4 PCBs, it delivers 500 mW dissipation with RθJA = 340 °C/W and RθJL = 150 °C/W, enabling reliable operation up to +150°C junction temperature. The cathode band marking and SOD123 package ensure unambiguous polarity and automated placement compatibility.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 27 V (25.65–28.35 V range at IZT = 50 µA); provides stable mid-range reference for feedback networks and clamping. |
| Power Dissipation | 500 mW on FR-4 PCB at TL = +75°C; supports continuous low-power regulation without heatsinking. |
| Reverse Leakage Current | ≤50 nA at VR = 20.4 V; ensures minimal quiescent current draw in battery-critical applications. |
| Zener Test Current | 50 µA; enables accurate low-current biasing in ultra-low-power sensor interfaces and microcontroller reference circuits. |
| Thermal Resistance (Junction–Ambient) | 340 °C/W; defines derating slope - power must be reduced by ~1.47 mW/°C above +75°C ambient. |
| Operating Temperature Range | −65°C to +150°C; suitable for industrial and automotive under-hood environments when qualified variant used. |
Pinout & Package
Package: SOD123 - surface-mount plastic case, 0.01 g weight, UL 94V-0 rated, matte tin–annealed terminals solderable per MIL-STD-202 Method 208. Cathode identified by molded band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground node | Connected to circuit ground or lower-potential node; forms reference return path in shunt regulator topology. |
| Cathode | Zener breakdown terminal / Voltage clamp input | Connected to regulated rail or signal line; maintains 27 V relative to anode during reverse conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Low test current specification | 50 µA enables use in nanoamp-level bias networks without compromising regulation accuracy. |
| Low reverse leakage | ≤50 nA at 75% of VZ ensures <1 µW standby loss in always-on voltage monitoring circuits. |
| SOD123 footprint | Standardized 1.55 mm × 2.65 mm outline supports high-density PCB layouts and automated pick-and-place. |
| Lead-free & RoHS 3 compliant | Fully compliant with EU Directive 2015/863/EU; halogen- and antimony-free "Green" construction. |
Applications
| Portable Power Management | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Voltage reference for lithium-ion battery fuel gauges and charge controller feedback loops. IC Role / Device Role / Timing Role: Shunt Zener reference providing stable 27 V threshold for comparator-based overvoltage detection. Use Value: Enables accurate cell voltage monitoring with <±1% error over −20°C to +70°C due to low TC and tight VZ tolerance. |
Use Scenario: Biasing and clamping in 4–20 mA current loop transmitters with isolated analog front-ends. IC Role / Device Role / Timing Role: Precision voltage clamp protecting op-amp inputs from transient overvoltage events. Use Value: Limits input swing to 27 V while drawing <50 nA, preserving loop accuracy and avoiding saturation-induced errors. |
| Automotive Body Control Modules | Medical Wearable Device Power Rails |
|
Use Scenario: Regulated 27 V supply for LIN bus transceivers and LED driver ICs in BCM subassemblies. IC Role / Device Role / Timing Role: Low-power shunt regulator maintaining stable bias for communication interface ICs. Use Value: Delivers stable voltage with <2% drift over −40°C to +125°C, meeting AEC-Q101 requirements when using Q-grade variant. |
Use Scenario: Overvoltage protection for coin-cell–powered ECG front-end ASICs operating at 2.5–3.3 V logic rails. IC Role / Device Role / Timing Role: Fail-safe clamp preventing >27 V transients from damaging sensitive analog acquisition circuitry. Use Value: Responds within nanoseconds to ESD events while adding zero standby current burden to multi-day battery life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C27LT1G | Same 27 V nominal, but ±5% tolerance at IZT = 5 mA; higher test current increases dynamic impedance (Zzt ≈ 80 Ω vs. DDZ9711's ~300 Ω at 50 µA). | Requires higher bias current; less suitable for nanoamp-sensor biasing but better for moderate-load regulation. | Select when circuit can support ≥5 mA Zener current and lower dynamic impedance is prioritized over quiescent power. |
| MMSZ4683T1G | 27 V nominal, ±5% at IZT = 1 mA; Zzt ≈ 120 Ω; slightly higher IR (≤100 nA @ VR = 20.4 V) than DDZ9711. | Higher leakage and test current reduce suitability for ultra-low-power systems but improve noise immunity in noisy environments. | Prefer for cost-sensitive industrial controls where 1 mA bias is acceptable and tighter Zzt tolerance matters more than leakage. |
Compared with BZX84-C27LT1G and MMSZ4683T1G, DDZ9711-7 uniquely balances ultra-low leakage (≤50 nA), low test current (50 µA), and SOD123 reliability - making it optimal for battery-constrained, high-precision voltage referencing where minimal quiescent draw is non-negotiable.
Availability
DDZ9711-7 is available at Aetrix Electronics and suitable for portable power management, industrial sensor signal conditioning, and automotive body control modules requiring stable component supply with full traceability and lifecycle continuity.
Supply support for DDZ9711-7 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 DDZ9678–DDZ9717 series was developed specifically for low-current, high-stability Zener reference applications in space-constrained, battery-operated, and thermally demanding systems - emphasizing precision, low leakage, and automated assembly compatibility.
FAQ
What is the maximum reverse voltage (VR) at which DDZ9711-7 guarantees ≤50 nA leakage?
Per the Electrical Characteristics table, DDZ9711-7 guarantees ≤50 nA reverse leakage current at VR = 20.4 V - 75% of its nominal 27 V zener voltage. This value is specified under standard test conditions (TA = +25°C) and reflects the device's capability to hold off voltage below breakdown with negligible current draw.
Can DDZ9711-7 be used in place of a 24 V Zener diode in a feedback divider?
No - DDZ9711-7 is a fixed 27 V nominal device with a minimum zener voltage of 25.65 V. Substituting it for a 24 V Zener would raise the regulated output voltage by ~3 V, potentially exceeding IC absolute maximum ratings. Use DDZ9709 (24 V) or DDZ9708 (22 V) for lower-voltage alternatives in the same family.
Is the SOD123 package of DDZ9711-7 compatible with reflow profiles for lead-free soldering?
Yes - the device uses matte tin–annealed terminals qualified per J-STD-020 Level 1 moisture sensitivity and is rated for standard Pb-free reflow profiles (peak temperature ≤260°C). Its UL 94V-0 mold compound and thermal resistance values have been validated for IPC/JEDEC J-STD-020-compliant processes.
Does DDZ9711-7 have automotive qualification?
The base DDZ9711-7 is not AEC-Q101 qualified; however, the automotive-grade variant DDZ9711Q-7 is fully AEC-Q101 qualified, PPAP capable, and manufactured in IATF 16949 certified facilities. For automotive applications, specify the "Q" suffix part number to ensure compliance.
DDZ9711-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 27 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- 50 nA @ 20.4 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
DDZ9711-7 FAQ
1.How can I place an order for DDZ9711-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZ9711-7 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 DDZ9711-7 reliable?
The price and inventory of DDZ9711-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZ9711-7 is usually 5 days.
3.What payment methods are accepted for DDZ9711-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZ9711-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZ9711-7?
DDZ9711-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZ9711-7 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 DDZ9711-7?
For technical support, including DDZ9711-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZ9711-7 requirements.
6.How does Aetrix verify that DDZ9711-7 is sourced from the original manufacturer or authorized distributors?
All DDZ9711-7 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 DDZ9711-7 meets industry standards.
7.What is the process for return or replacement of DDZ9711-7?
All DDZ9711-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZ9711-7, 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 DDZ9711-7 part is unused and in its original packaging.
Return procedure for DDZ9711-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDZ9711-7 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
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SMAJ4744A-TP
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BZT52C3V6LP-7
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SMAZ12-13-F
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