My Inquiry
My Account
Diodes Incorporated QZX363C20-7-F
- Part No.:
- QZX363C20-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Zener Diode Arrays
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
QZX363C20-7-F.pdf
- Description:
- DIODE ZENER ARRAY 20V SOT363
- Quantity:
- Payment:
- Shipping:
Inventory:8,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
QZX363C20-7-F from Diodes Incorporated is a quad surface-mount Zener diode array with nominal 20 V Zener voltage (19.0–21.0 V at 5 mA), 200 mW power dissipation, 55 Ω maximum Zener impedance at 5 mA, and SOT363 package. It provides precision voltage regulation and transient suppression in compact space-constrained PCBs for industrial sensor signal conditioning and I/O protection circuits.
For engineers reviewing the QZX363C20-7-F datasheet, QZX363C20-7-F pinout, QZX363C20-7-F application, or QZX363C20-7-F equivalent, key selection criteria include Zener voltage tolerance (±5%), thermal resistance (625 °C/W), reverse leakage (≤0.1 µA at 14 V), temperature coefficient (+14.4 to +18.0 mV/°C), and quad-channel integration in a single 2.15 mm × 2.10 mm footprint.
Technical Context
This device integrates four independent Zener diodes in one monolithic SOT363 package, each rated for 20 V nominal breakdown with tight ±5% tolerance and low dynamic impedance. It operates across –65 °C to +150 °C and maintains stable regulation under pulse conditions per short-duration test methodology (Note 5).
The array supports transient voltage suppression via controlled avalanche conduction, with specified reverse current limits (IR ≤ 0.1 µA at VR = 14 V) and thermal derating down to zero power at 150 °C ambient. Its matte tin-plated Alloy 42 leadframe ensures solderability per MIL-STD-202, Method 208.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 20 V nominal, 19.0–21.0 V at IZT = 5 mA - defines precise clamping threshold for overvoltage protection |
| Power Dissipation (PD) | 200 mW at TA = 25 °C - sets maximum continuous steady-state power handling before thermal derating |
| Zener Impedance (ZZT) | 55 Ω max at f = 1 kHz, IZT = 5 mA - determines regulation stiffness under dynamic load changes |
| Reverse Leakage (IR) | ≤0.1 µA at VR = 14 V - ensures minimal standby current in high-impedance bias networks |
| Temp. Coefficient (TC) | +14.4 to +18.0 mV/°C - quantifies voltage drift with junction temperature in precision reference applications |
| Thermal Resistance (RθJA) | 625 °C/W on FR-4 board - defines junction-to-ambient temperature rise per watt dissipated |
| Package | SOT363 - 6-pin ultra-small outline transistors (USOT) footprint measuring 2.15 mm × 2.10 mm × 0.95 mm |
Pinout & Package
SOT363 is a 6-pin, dual-row surface-mount plastic package with gull-wing leads. Pin 1 is marked by a notch or beveled corner; pin numbering follows standard JEDEC SOT363 convention (1–3 on left row, 4–6 on right row, top view).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (C1) | Anode of Diode 1 | Connects to reference ground or return path for first Zener channel |
| Pin 2 (C2) | Cathode of Diode 1 | Input node for 20 V clamping; ties to protected signal line or supply rail |
| Pin 3 (NC) | No Connect | Internally unconnected; must remain floating or grounded per layout guidelines |
| Pin 4 (C3) | Anode of Diode 2 | Shared anode configuration enables common-cathode transient suppression topology |
| Pin 5 (C4) | Cathode of Diode 2 | Second clamping node; used for differential or dual-rail protection schemes |
| Pin 6 (A) | Anode Common (Diodes 3 & 4) | Internal tie point for third and fourth Zener anodes; enables compact multi-channel layout |
Key Features
| Feature | Design Value |
|---|---|
| Quad Zener Integration | Four independent 20 V Zener elements in one SOT363 - reduces component count and board area vs. discrete solutions |
| Precision Voltage Regulation | ±5% Zener voltage tolerance at 5 mA - enables accurate clamping without external trimming |
| Low Thermal Resistance | 625 °C/W on FR-4 - supports reliable operation up to +150 °C junction temperature in industrial environments |
| Green Compliance | Halogen- and antimony-free, RoHS 3 compliant (<900 ppm Br/Cl, <1000 ppm Sb) - meets global environmental directives |
| Transient Suppression Suitability | Specified for single-phase half-wave 60 Hz loads with 20% capacitive derating - validated for ESD and surge clamp use |
Applications
| Industrial Sensor Signal Conditioning | PLC Digital Input Protection |
|---|---|
|
Use Scenario: Protecting analog front-end inputs of 4–20 mA current loop receivers from induced transients on factory floor wiring. IC Role / Device Role / Timing Role: Zener clamp limiting input voltage to 20 V while maintaining high-impedance bias network integrity. Use Value: Prevents op-amp saturation and ADC damage during 1 kV EFT events without adding series resistance that degrades signal fidelity. |
Use Scenario: Safeguarding 24 V DC digital input channels in programmable logic controllers against field-wiring surges and polarity reversals. IC Role / Device Role / Timing Role: Quad-array cathode-anode pairing enables bidirectional clamping across two isolated input lines. Use Value: Eliminates need for eight discrete Zeners; maintains <10 ns response time and <0.1 µA leakage at 18 V operating point. |
| Automotive Body Control Module I/O | Medical Diagnostic Equipment Power Rails |
|
Use Scenario: Regulating and protecting LIN bus interface pins and switch-sense inputs in automotive BCMs exposed to load-dump pulses. IC Role / Device Role / Timing Role: Zener diode functioning as voltage reference and overvoltage limiter in 12 V system interfaces. Use Value: Withstands 40 V/50 ms load dump per ISO 7637-2 Pulse 5a when combined with series impedance, leveraging 200 mW rating. |
Use Scenario: Stabilizing auxiliary 5 V and 3.3 V rails in portable ultrasound and ECG devices where low leakage is critical for battery life. IC Role / Device Role / Timing Role: Precision 20 V Zener used in feedback divider of isolated DC-DC converter for medical-grade output regulation. Use Value: Enables ±0.5% output accuracy over temperature due to predictable +16.2 mV/°C TC and low 0.1 µA IR at 14 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode array applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-C20,115 (Nexperia) | Single 20 V Zener in SOD323 (1.7 × 1.3 mm); no quad integration; 300 mW PD; 60 Ω ZZT | Requires four separate placements; higher board area; better power handling per diode but no channel matching | Select when individual diode replacement or higher per-diode power is needed; not suitable for space-constrained quad-clamp layouts |
| MMBZ5248BS-7-F (Diodes Inc.) | Quad 20 V Zener in SOT363; same package; 225 mW PD; 60 Ω ZZT; wider VZ tolerance (±6%) | Identical footprint and pinout; slightly looser voltage spec; identical thermal and leakage performance | Drop-in alternative if ±6% tolerance is acceptable; verified compatible in existing SOT363 land patterns and assembly processes |
Compared with BZX384-C20 and MMBZ5248BS-7-F, QZX363C20-7-F offers tighter ±5% Zener tolerance and lower 55 Ω impedance, making it preferable for precision clamping where channel-to-channel matching and regulation stiffness are critical.
Availability
QZX363C20-7-F is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, PLC digital input protection, and automotive body control module I/O requiring stable component supply and long-term lifecycle support.
Supply support for QZX363C20-7-F 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 QZX363 series belongs to Diodes' precision Zener diode portfolio, engineered specifically for space-efficient transient voltage suppression and voltage reference applications in industrial, automotive, and medical electronics.
FAQ
What is the maximum reverse voltage (VR) at which leakage current remains ≤0.1 µA?
The datasheet specifies IR ≤ 0.1 µA at VR = 14 V for QZX363C20-7-F. This is below the nominal 20 V Zener voltage and reflects the device's low-leakage behavior in pre-breakdown region-critical for high-impedance bias networks and battery-powered systems.
Can QZX363C20-7-F be used in bidirectional TVS configurations?
No-it is a unidirectional Zener array with anodes and cathodes assigned per pinout. Bidirectional clamping requires back-to-back Zener pairs or dedicated TVS diodes. For differential signal protection, external series diodes must be added to achieve symmetrical clamping.
Is the SOT363 package compatible with standard reflow profiles for lead-free soldering?
Yes. The device uses matte tin-plated Alloy 42 leads and is rated for lead-free reflow per J-STD-020 Level 1 moisture sensitivity. Peak temperatures up to 260 °C are supported, and solderability is validated per MIL-STD-202, Method 208.
How does the +16.2 mV/°C temperature coefficient affect voltage reference stability?
At nominal 20 V, the TC causes ~0.081% per °C drift. Over a 100 °C range (–40 to +60 °C), this yields ~1.6 V total shift-acceptable for non-precision clamping but insufficient for metrology-grade references without compensation circuitry.
QZX363C20-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Configuration:
- 2 Pair Common Anode
- Voltage - Zener (Nom) (Vz):
- 20 V
- Tolerance:
- ±5%
- Power - Max:
- 200 mW
- Impedance (Max) (Zzt):
- 55 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 14 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:
- SOT-363
QZX363C20-7-F FAQ
1.How can I place an order for QZX363C20-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for QZX363C20-7-F 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 QZX363C20-7-F reliable?
The price and inventory of QZX363C20-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for QZX363C20-7-F is usually 5 days.
3.What payment methods are accepted for QZX363C20-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for QZX363C20-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for QZX363C20-7-F?
QZX363C20-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your QZX363C20-7-F 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 QZX363C20-7-F?
For technical support, including QZX363C20-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your QZX363C20-7-F requirements.
6.How does Aetrix verify that QZX363C20-7-F is sourced from the original manufacturer or authorized distributors?
All QZX363C20-7-F 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 QZX363C20-7-F meets industry standards.
7.What is the process for return or replacement of QZX363C20-7-F?
All QZX363C20-7-F units undergo pre-shipment inspection (PSI). If there is an issue with QZX363C20-7-F, 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 QZX363C20-7-F part is unused and in its original packaging.
Return procedure for QZX363C20-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
QZX363C20-7-F Tags
-
MMBZ18VALT1G
onsemi
-
AZ23C18-7-F
Diodes Incorporated
-
MMBZ6V2ALT1G
onsemi
-
MMBZ5V6ALT1G
onsemi
-
MMBZ6V8ALT1G
onsemi
-
MMBZ5V6ALT3G
onsemi
-
MMBZ33VALT1G
onsemi
-
MMBZ9V1ALT1G
onsemi
-
MMBZ20VALT1G
onsemi
-
SZMMBZ27VALT1G
onsemi
-
MMBZ15VALT1G
onsemi
-
MMBZ12VALT1G
onsemi
Tech Hub
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…
