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Diodes Incorporated DDZ9691T-7
- Part No.:
- DDZ9691T-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
DDZ9691T-7.pdf
- Description:
- DIODE ZENER 6.2V 150MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
DDZ9691T-7 from Diodes Incorporated is a surface-mount Zener diode with nominal zener voltage 6.2 V, tolerance ±5% (5.89–6.51 V), maximum power dissipation 150 mW, and reverse leakage current ≤1 µA at 5 V. It uses SOD523 package and serves as precision voltage reference or overvoltage clamp in low-power analog signal conditioning circuits.
For engineers reviewing the DDZ9691T-7 datasheet, DDZ9691T-7 pinout, DDZ9691T-7 application, or DDZ9691T-7 equivalent, key selection criteria include zener voltage accuracy, low leakage at bias voltages below breakdown, thermal resistance (833 °C/W), and compatibility with automated SMT assembly on space-constrained PCBs.
Technical Context
This device operates in reverse-biased breakdown mode to maintain stable voltage across its terminals under varying load currents. Its sharp breakdown knee and low dynamic impedance (typ. <40 Ω at IZ = 5 mA) support tight regulation in feedback networks and reference dividers.
Designed for ambient temperatures from –65 °C to +150 °C, it exhibits a temperature coefficient of approximately +0.03 %/°C near 6.2 V, enabling predictable drift behavior in industrial sensor interfaces and power supply monitoring circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (Nominal) | 6.2 V - Stable regulation point for 5 V–6.5 V rail monitoring and clamping |
| Zener Voltage Range | 5.89–6.51 V - ±5% tolerance ensures predictable trip point in protection circuits |
| Power Dissipation | 150 mW - Limits continuous current to ~24 mA at 6.2 V; requires derating above 25 °C |
| Reverse Leakage Current | ≤1 µA @ 5 V - Minimizes error in high-impedance reference nodes and battery-backed circuits |
| Forward Voltage | 0.9 V @ 10 mA - Enables use as low-drop rectifier or ESD path in bidirectional protection schemes |
| Thermal Resistance | 833 °C/W - Requires careful pad layout per Diodes' SOD523 recommendations to avoid thermal runaway |
Pinout & Package
Package: SOD523 - ultra-compact 2-pin surface-mount plastic case (0.80 mm × 1.25 mm × 0.60 mm), cathode marked by band, matte tin-plated alloy 42 leadframe, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to lower-potential node in zener operation | Used for forward conduction paths or as reference ground return in shunt regulator topologies |
| Cathode | Current exit terminal in forward bias; connected to higher-potential node in zener operation | Terminal where regulated voltage appears; marked by band; ties to supply rail or feedback node |
Key Features
| Feature | Design Value |
|---|---|
| Sharp breakdown knee | Enables precise voltage threshold detection without hysteresis or soft turn-on in clamp circuits |
| Low leakage current | Preserves signal integrity in high-Z op-amp inputs and microcontroller ADC reference dividers |
| SOD523 footprint | Reduces board area by >50% vs. SOD-123; compatible with fine-pitch 0.4 mm pitch pick-and-place equipment |
| Lead-free & halogen-free | Meets IPC-J-STD-020D Level 1 and RoHS 2 compliance without compromising solderability or long-term reliability |
Applications
| Industrial Sensor Signal Conditioning | USB Port Overvoltage Protection |
|---|---|
Use Scenario: Stabilizing reference voltage for bridge sensor amplifiers in pressure transducers operating from 3.3 V or 5 V rails. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 6.2 V bias to instrumentation amplifier input stage. Use Value: Low 1 µA leakage prevents loading of high-impedance Wheatstone bridge outputs; sharp knee avoids false triggering during transient surges. | Use Scenario: Clamping induced transients on USB D+ and D− lines during hot-plug events or ESD discharge. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor placed between data line and ground. Use Value: 0.9 V forward drop enables fast clamping in both directions; SOD523 size allows placement within 2 mm of connector for effective high-frequency suppression. |
| Low-Power Microcontroller Reset Circuit | Automotive Body Control Module Voltage Monitor |
Use Scenario: Generating clean reset pulse when main 5 V supply drops below 4.75 V during brown-out conditions. IC Role / Device Role / Timing Role: Zener-based comparator reference in discrete reset generator circuit. Use Value: Tight 5.89–6.51 V range ensures consistent reset threshold across temperature; low leakage maintains capacitor hold-up time. | Use Scenario: Monitoring 12 V battery rail for undervoltage (≤9 V) and overvoltage (≥15 V) faults in BCM power management. IC Role / Device Role / Timing Role: Precision clamp element in resistor-divider feedback network feeding supervisor IC. Use Value: Specified TC (~+0.03 %/°C) allows accurate fault thresholds across –40 °C to +125 °C ambient; 150 mW rating supports sustained clamp duty in load-dump scenarios. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C6V2 | Same 6.2 V nominal, but SOD-323 package (larger footprint); 200 mW power rating | Higher power handling suits higher-current clamp loads; less suitable for ultra-dense layouts | Select if board space permits and >150 mW dissipation is required |
| MMSZ4687 | 6.2 V nominal, SOD-123 package; 500 mW rating; ±5% tolerance; higher leakage (≤5 µA @ 5 V) | Greater thermal margin for intermittent surge clamping; higher leakage may affect precision references | Select for robustness in non-critical voltage sensing where leakage is not limiting |
Compared with BZX584C6V2 and MMSZ4687, DDZ9691T-7 offers the smallest footprint and lowest leakage, making it optimal for space-constrained, low-power precision applications-though its 150 mW limit requires careful thermal design in sustained clamp roles.
Availability
DDZ9691T-7 is available at Aetrix Electronics and suitable for industrial sensor interfaces, USB port protection, microcontroller reset circuits, and automotive body control module voltage monitoring requiring stable component supply and full RoHS/Green compliance.
Supply support for DDZ9691T-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 North America.
The DDZ9689T–DDZ9717T series belongs to Diodes' precision Zener diode product line, engineered specifically for compact, low-leakage voltage reference and clamping in portable, automotive, and industrial electronics.
FAQ
What is the maximum zener test current (IZT) for DDZ9691T-7?
The datasheet specifies IZT = 5 mA for DDZ9691T-7. This is the standardized test current used to measure nominal zener voltage (6.2 V) and dynamic impedance. Operation beyond this current requires verification against the power derating curve (Fig. 1), especially above 25 °C ambient.
Does DDZ9691T-7 have a specified zener impedance (ZZT)?
Yes-Figure 10 shows typical zener impedance for DDZ9691T-7 (within the DDZ9689T–DDZ9692T group) as ~35 Ω at 1 mA and ~25 Ω at 5 mA. This low dynamic impedance supports stable regulation under small-signal load variations in reference applications.
Can DDZ9691T-7 be used in bidirectional ESD protection?
No-it is a unidirectional Zener diode optimized for reverse-bias regulation. For bidirectional ESD protection, a dedicated TVS diode (e.g., D3V3F4U2P) or back-to-back Zener pair is required. Forward conduction (0.9 V @ 10 mA) is not rated for ESD pulse handling.
Is the SOD523 package of DDZ9691T-7 compatible with reflow profiles for lead-free soldering?
Yes-the device is fully RoHS-compliant and qualified for standard Pb-free reflow profiles (J-STD-020D Level 1). Its matte tin finish and alloy 42 leadframe ensure reliable wetting and joint formation under peak temperatures up to 260 °C, provided recommended pad layout and thermal relief are followed.
DDZ9691T-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-79, SOD-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 6.2 V
- Tolerance:
- ±5%
- Power - Max:
- 150 mW
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- 1 µA @ 5 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-523
DDZ9691T-7 FAQ
1.How can I place an order for DDZ9691T-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZ9691T-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 DDZ9691T-7 reliable?
The price and inventory of DDZ9691T-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZ9691T-7 is usually 5 days.
3.What payment methods are accepted for DDZ9691T-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZ9691T-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZ9691T-7?
DDZ9691T-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZ9691T-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 DDZ9691T-7?
For technical support, including DDZ9691T-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZ9691T-7 requirements.
6.How does Aetrix verify that DDZ9691T-7 is sourced from the original manufacturer or authorized distributors?
All DDZ9691T-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 DDZ9691T-7 meets industry standards.
7.What is the process for return or replacement of DDZ9691T-7?
All DDZ9691T-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZ9691T-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 DDZ9691T-7 part is unused and in its original packaging.
Return procedure for DDZ9691T-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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