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Diodes Incorporated BZT52C22LP-7
- Part No.:
- BZT52C22LP-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- 0402 (1006 Metric)
- Datasheet:
-
BZT52C22LP-7.pdf
- Description:
- DIODE ZENER 22V 250MW 2DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,597
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Product details
Overview
BZT52C22LP-7 from Diodes Incorporated is a surface-mount Zener diode with nominal zener voltage 22 V, ±5% tolerance (20.8–23.3 V), 5 mA test current, 55 Ω maximum zener impedance at IZT, and 250 mW power dissipation in DFN1006-2 package - used for precision voltage regulation and overvoltage protection in low-power DC rails.
For engineers reviewing the BZT52C22LP-7 datasheet, BZT52C22LP-7 pinout, BZT52C22LP-7 application, or BZT52C22LP-7 equivalent, key selection criteria include zener voltage stability across temperature (±0.05 %/°C TC), ultra-low leakage (<0.1 µA @ 17.6 V), AEC-Q101 qualification for automotive environments, and lead-free, RoHS-compliant DFN1006-2 footprint compatibility with high-density PCB layouts.
Technical Context
This Zener diode operates in reverse breakdown mode to clamp voltage at 22 V with tight regulation under 5 mA test current and exhibits low dynamic impedance (55 Ω) for stable reference performance. Its thermal resistance of 500 °C/W reflects operation on standard FR-4 PCBs using minimum pad layout per datasheet.
The device features a cathode-indicated DFN1006-2 package with NiPdAu-plated terminals, moisture sensitivity level 1, and operating junction temperature range from –65 °C to +150 °C - enabling use in extended-temperature industrial and automotive control modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 22 V nominal, 20.8–23.3 V range at 5 mA - ensures reliable clamping within ±5% across production lot |
| Power Dissipation (PD) | 250 mW at TA = 25 °C - supports continuous regulation in space-constrained, low-power circuits |
| Zener Impedance (ZZT) | ≤55 Ω at IZT = 5 mA - minimizes output voltage variation under load transients |
| Reverse Leakage (IR) | ≤0.1 µA at VR = 17.6 V - enables low-quiescent-current biasing in battery-powered sensors |
| Temperature Coefficient | +0.05 %/°C typical - provides predictable drift compensation in temperature-stable references |
| Package | DFN1006-2 (1.0 × 0.6 × 0.5 mm) - supports automated placement and reflow on fine-pitch PCBs |
Pinout & Package
DFN1006-2 is a 2-terminal, leadless surface-mount package with exposed cathode pad and molded plastic body. Cathode is marked by a dot on top surface; terminals are NiPdAu-plated copper leads solderable per MIL-STD-202.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Reverse-biased reference node | Connected to lower-potential rail during zener operation; forms regulated reference point when cathode is biased above anode |
| Cathode | Zener breakdown terminal / Voltage clamp input | Marked with dot; connected to higher-potential rail to enable reverse breakdown at 22 V; defines regulated output node |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| Lead-free & RoHS compliant | No intentionally added lead; UL 94V-0 flammability rating ensures safety in enclosed systems |
| Ultra-small DFN1006-2 | 0.001 g weight and 0.6 mm width enable routing in <0.5 mm pitch PCBs |
| Low leakage & stable TC | 0.1 µA max IR at 80% VZ and +0.05 %/°C TC support precision analog sensing |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Regulating 22 V supply rail for LIN transceiver ICs in door module ECUs. IC Role / Device Role / Timing Role: Zener clamp protecting transceiver VCC against load-dump spikes up to 35 V. Use Value: Maintains stable 22 V reference while dissipating transient energy without derating beyond 250 mW limit. | Use Scenario: Providing stable 22 V bias for op-amp-based bridge sensor excitation in pressure transducers. IC Role / Device Role / Timing Role: Precision voltage reference source with low TC and minimal self-heating error. Use Value: Enables <±0.1% full-scale accuracy over –40 to +125 °C ambient due to tight VZ tolerance and predictable drift. |
| USB-C Power Delivery Monitor | Smart Meter Voltage Supervisor |
Use Scenario: Clamping auxiliary 22 V rail feeding PD controller logic during adapter hot-swap events. IC Role / Device Role / Timing Role: Overvoltage protector limiting surge-induced voltage overshoot on monitoring inputs. Use Value: Responds within nanoseconds to 100 ns/100 V transients, holding downstream ICs below absolute max ratings. | Use Scenario: Supervising 22 V backup battery charging circuit in utility meter RTC subsystem. IC Role / Device Role / Timing Role: Low-leakage voltage threshold detector ensuring charge cutoff at precise 22 V. Use Value: Draws only 0.1 µA at 17.6 V, extending 10-year battery life without compromising detection accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5246BS-7-F | Zener voltage 22 V, but SOD-523 package (1.3 × 0.8 mm); 350 mW PD; 70 Ω ZZT | Larger footprint and higher thermal resistance (625 °C/W) reduce suitability for ultra-dense layouts | Select when higher power margin is needed and board area permits larger package |
| 1SMA5931BT3G | 22 V Zener in SMA package (4.5 × 2.7 mm); 1.5 W PD; 15 Ω ZZT; ±5% tolerance | Through-hole compatible but incompatible with automated SMT lines; requires >3× PCB area | Choose for high-energy transient suppression where DFN thermal limits are exceeded |
Compared with MMBZ5246BS-7-F and 1SMA5931BT3G, BZT52C22LP-7 delivers optimal balance of miniaturization, AEC-Q101 compliance, and low-impedance regulation - making it preferred for automotive and portable industrial designs where footprint, reliability, and precision are jointly constrained.
Availability
BZT52C22LP-7 is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor signal conditioning, USB-C power delivery monitors, and smart meter voltage supervisors requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZT52C22LP-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 BZT52CxxLP series belongs to Diodes' AEC-Q101-qualified Zener diode portfolio, engineered specifically for voltage regulation and transient protection in automotive infotainment, ADAS, and powertrain subsystems where reliability and miniaturization are critical.
FAQ
What is the maximum reverse voltage this Zener diode can withstand before breakdown?
The BZT52C22LP-7 has a nominal zener voltage of 22 V with a guaranteed range of 20.8 V to 23.3 V at 5 mA test current. It begins controlled reverse breakdown within this band and maintains regulation up to its 250 mW power limit. At voltages below 20.8 V, leakage remains ≤0.1 µA - no hard "breakdown threshold" exists outside the specified VZ range.
Is this part suitable for use in automotive applications?
Yes - BZT52C22LP-7 is explicitly qualified to AEC-Q101 standards, covering stress tests such as high-temperature reverse bias, temperature cycling, and ESD. Its DFN1006-2 package, –65 °C to +150 °C operating range, and RoHS-compliant construction meet automotive electronics requirements for under-hood and cabin modules.
How does the DFN1006-2 package affect thermal performance?
Mounted on FR-4 with minimum recommended pads, the DFN1006-2 delivers RθJA = 500 °C/W. This allows safe 250 mW operation only at TA ≤ 25 °C; derating is required above that ambient. For higher power needs, thermal vias under the cathode pad or copper pour improve heat spreading but do not change the datasheet-rated RθJA.
Can this Zener diode replace a through-hole 1N4744A in an existing design?
No - while both have 22 V nominal zener voltage, the BZT52C22LP-7 is a surface-mount DFN1006-2 device with different thermal, mechanical, and electrical characteristics. The 1N4744A uses DO-41 package, 1 W power rating, and 20 Ω impedance. Direct replacement requires PCB redesign, thermal validation, and verification of leakage and regulation behavior at 5 mA vs. 21 mA test current.
BZT52C22LP-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 0402 (1006 Metric)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 22 V
- Tolerance:
- ±5.67%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 55 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 15.4 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- X1-DFN1006-2
BZT52C22LP-7 FAQ
1.How can I place an order for BZT52C22LP-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C22LP-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 BZT52C22LP-7 reliable?
The price and inventory of BZT52C22LP-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52C22LP-7 is usually 5 days.
3.What payment methods are accepted for BZT52C22LP-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C22LP-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C22LP-7?
BZT52C22LP-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C22LP-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 BZT52C22LP-7?
For technical support, including BZT52C22LP-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C22LP-7 requirements.
6.How does Aetrix verify that BZT52C22LP-7 is sourced from the original manufacturer or authorized distributors?
All BZT52C22LP-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 BZT52C22LP-7 meets industry standards.
7.What is the process for return or replacement of BZT52C22LP-7?
All BZT52C22LP-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C22LP-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 BZT52C22LP-7 part is unused and in its original packaging.
Return procedure for BZT52C22LP-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT52C22LP-7 Tags
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