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Diodes Incorporated DFLZ22-13
- Part No.:
- DFLZ22-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- POWERDI®123
- Datasheet:
-
DFLZ22-13.pdf
- Description:
- DIODE ZENER 22V 1W POWERDI 123
- Quantity:
- Payment:
- Shipping:
Inventory:6,398
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Product details
Overview
DFLZ22-13 from Diodes Incorporated is a 1.0W surface-mount power Zener diode in PowerDI123 package, rated for 22V nominal Zener voltage (20.8–23.3V range at 25mA), with 15Ω maximum Zener impedance, 1µA maximum reverse leakage at 17.6V, and ±0.06%/°C temperature coefficient. It delivers stable voltage regulation in power supply feedback loops, overvoltage clamping, and reference circuits operating from −55°C to +150°C.
For engineers reviewing the DFLZ22-13 datasheet, DFLZ22-13 pinout, DFLZ22-13 application, or DFLZ22-13 equivalent, key selection criteria include its 1W FR-4 power dissipation capability, JEDEC-qualified reliability, automotive-grade variant availability (DFLZ22Q-13), RoHS-compliant matte tin finish, and thermal resistance of 9°C/W junction-to-soldering-point.
Technical Context
This Zener diode operates in reverse breakdown mode with tightly controlled voltage tolerance (±5% typical) and low dynamic impedance-critical for precision regulation under varying load currents. Its PowerDI123 package enables high thermal efficiency via direct cathode tab conduction to PCB copper, supporting stable operation up to 150°C junction temperature.
The device exhibits minimal voltage drift across temperature (±0.06%/°C), enabling reliable reference performance in industrial and automotive environments. Reverse leakage remains below 1µA at 80% of VZ, ensuring low standby power loss in protection circuits without compromising clamping speed.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 22V nominal, 20.8–23.3V range at IZT = 25mA - defines precise regulation point for feedback or clamp threshold |
| Power Dissipation (PD) | 1.0W on FR-4 PCB - supports robust transient energy absorption without derating at 25°C ambient |
| Zener Impedance (ZZT) | ≤15Ω max at IZT = 25mA - ensures minimal output voltage variation under dynamic load changes |
| Reverse Leakage (IR) | ≤1µA at VR = 17.6V - guarantees negligible quiescent current in always-on protection circuits |
| Temp. Coefficient (αVZ) | ±0.06%/°C - maintains <±1% total VZ drift over −40°C to +125°C operating range |
| Junction-to-Solder Point RθJS | 9°C/W - enables efficient heat transfer to PCB ground plane, critical for sustained 1W operation |
| Operating Temperature | −55°C to +150°C - qualified for under-hood automotive and industrial control applications |
Pinout & Package
Package: PowerDI123 - molded green plastic, UL 94V-0 rated, 0.01g weight, cathode band marking, matte tin annealed terminals solderable per MIL-STD-202.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse bias reference node | Connected to lower-potential rail in shunt regulator or clamp configuration |
| Cathode | Zener breakdown terminal / Output reference node | Provides regulated voltage node; bonded to exposed metal tab for thermal conduction to PCB |
Key Features
| Feature | Design Value |
|---|---|
| 1W Power Dissipation on FR-4 | Enables direct integration into compact power supplies without heatsinks or airflow |
| JEDEC High-Reliability Qualification | Validated for mission-critical applications including automotive ECUs and industrial PLCs |
| RoHS & Halogen-Free Compliance | Meets EU Directive 2015/863/EU with Br+Cl <1500ppm and Sb <1000ppm - supports eco-design requirements |
| Cathode Band Polarity Marking | Ensures unambiguous orientation during automated placement and visual inspection |
| Moisture Sensitivity Level 1 | Eliminates bake requirements prior to reflow, reducing manufacturing cost and process complexity |
Applications
| Switch-Mode Power Supply Feedback | Automotive Overvoltage Clamp |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback converters by sensing secondary-side voltage via optocoupler feedback network. IC Role / Device Role / Timing Role: Shunt reference providing stable 22V threshold to error amplifier input. Use Value: Maintains ±1% output accuracy across line/load/temperature with <15Ω dynamic impedance limiting loop gain variation. |
Use Scenario: Protects 24V CAN bus transceivers and microcontrollers from load-dump transients up to 40V. IC Role / Device Role / Timing Role: Fast-acting crowbar element clamping rail voltage before TVS activation. Use Value: Absorbs 1W surge energy without degradation, leveraging 9°C/W RθJS to sustain repeated 100ms pulses. |
| Industrial Sensor Reference | Programmable Logic Controller Input Protection |
Use Scenario: Supplies stable bias voltage to analog front-end amplifiers in 4–20mA current-loop transmitters. IC Role / Device Role / Timing Role: Precision voltage reference with low tempco ensuring <0.1% full-scale error over −40°C to +85°C. Use Value: Enables 16-bit ADC resolution by minimizing reference drift-±0.06%/°C yields only ±0.75% total VZ shift. |
Use Scenario: Shields digital input pins of PLC CPU modules against field-wiring induced surges and ESD events. IC Role / Device Role / Timing Role: Primary clamping device placed before series current-limiting resistor. Use Value: Limits input voltage to ≤24V with <1µA leakage, preventing false triggering while maintaining high-impedance input state. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C22-7-F | 0.3W SOT-23 package, 22V ±5%, 55Ω ZZT, higher RθJA (350°C/W) | Limited to low-power signal-level clamping; unsuitable for >100mA regulation loads | Select when board space is constrained and power <300mW; avoid in power supply feedback |
| MMSZ5247B-TP | 0.5W SOD-123, 22V ±5%, 30Ω ZZT, RθJS = 120°C/W | Lower thermal performance limits continuous dissipation to ~0.4W on standard PCB | Prefer for cost-sensitive consumer designs where 1W rating is unnecessary |
Compared with BZX84-C22-7-F and MMSZ5247B-TP, DFLZ22-13 provides 3.3× and 2× higher power handling respectively, with superior thermal resistance enabling reliable 1W operation in industrial ambient conditions-making it the only choice for high-stability, high-energy regulation tasks.
Availability
DFLZ22-13 is available at Aetrix Electronics and suitable for switch-mode power supplies, automotive overvoltage protection, and industrial sensor reference circuits requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for DFLZ22-13 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, specializing in high-reliability power management, signal integrity, and protection solutions for industrial, automotive, and computing markets.
DFLZ22-13 belongs to the PowerDI® Zener diode product line, engineered specifically for high-power-density voltage regulation and transient suppression in thermally demanding environments where traditional SOD/SOT packages fail.
FAQ
What is the maximum continuous Zener current for DFLZ22-13 at 70°C ambient?
At 70°C ambient, the derated power dissipation is 0.7W (per Figure 1 derating curve). With VZ ≈ 22V, maximum continuous Zener current is ~32mA. This assumes adequate PCB copper area (1"x1", 2 oz.) and no additional airflow. Exceeding this risks thermal runaway due to positive tempco above 5V.
Does DFLZ22-13 meet AEC-Q200 stress test requirements?
No-DFLZ22-13 is qualified to JEDEC standards for high reliability but is not AEC-Q200 certified. For automotive applications, use the pin- and form-compatible DFLZ22Q-13 variant, which undergoes full AEC-Q200 qualification including temperature cycling, humidity bias, and mechanical shock testing.
Can DFLZ22-13 be used in parallel for higher power handling?
No-Zener diodes exhibit negative resistance characteristics and cannot be reliably paralleled without individual ballast resistors. Even with matched units, minor VZ tolerances cause current hogging. For >1W needs, select a single higher-rated device like DFLZ22-7 (same die, different packaging) or consider active regulation.
What is the significance of the "-13" suffix in DFLZ22-13?
The "-13" denotes tape-and-reel packaging: 10,000 units per reel. The base part DFLZ22 is identical electrically and thermally; only packaging differs from the "-7" variant (3,000 units/reel). Both share identical PowerDI123 footprint, marking, and reliability data.
DFLZ22-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- POWERDI®123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 22 V
- Tolerance:
- ±5.68%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 16 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerDI™ 123
DFLZ22-13 FAQ
1.How can I place an order for DFLZ22-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DFLZ22-13 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 DFLZ22-13 reliable?
The price and inventory of DFLZ22-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DFLZ22-13 is usually 5 days.
3.What payment methods are accepted for DFLZ22-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DFLZ22-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DFLZ22-13?
DFLZ22-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DFLZ22-13 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 DFLZ22-13?
For technical support, including DFLZ22-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DFLZ22-13 requirements.
6.How does Aetrix verify that DFLZ22-13 is sourced from the original manufacturer or authorized distributors?
All DFLZ22-13 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 DFLZ22-13 meets industry standards.
7.What is the process for return or replacement of DFLZ22-13?
All DFLZ22-13 units undergo pre-shipment inspection (PSI). If there is an issue with DFLZ22-13, 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 DFLZ22-13 part is unused and in its original packaging.
Return procedure for DFLZ22-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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