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Nexperia USA Inc. BZT52-C22X
- Part No.:
- BZT52-C22X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52-C22X.pdf
- Description:
- DIODE ZENER 22.05V 350MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:1,140
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Product details
Overview
BZT52-C22X from Nexperia is a ±5 % tolerance Zener diode in SOD123 package, rated for 22 V nominal Zener voltage at 5 mA, 220 Ω maximum differential resistance, and 590 mW total power dissipation at 25 °C ambient. It serves as a precision voltage reference or shunt regulator in low-power analog signal conditioning and power rail stabilization circuits.
For engineers reviewing the BZT52-C22X datasheet, BZT52-C22X pinout, BZT52-C22X application, or BZT52-C22X equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (210 K/W junction-to-solder-point), reverse current at 17.6 V (≤0.05 μA), temperature coefficient (±15.4 mV/K at 5 mA), and SOD123 footprint compatibility with automated SMT assembly.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable voltage across its terminals under varying load or supply conditions. Its 22 V nominal Zener voltage is specified at IZ = 5 mA, with differential resistance ≤220 Ω ensuring minimal output voltage variation over current changes.
The device exhibits a positive temperature coefficient of +15.4 mV/K at 5 mA, enabling predictable drift compensation in temperature-sensitive references. Its 210 K/W junction-to-solder-point thermal resistance supports reliable operation on standard FR4 PCBs with 1 cm² cathode pad.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 20.8 V to 23.3 V at IZ = 5 mA - defines regulated output voltage range under nominal test condition |
| Differential Resistance (rdif) | ≤220 Ω - limits output voltage shift under ±1 mA load current change |
| Reverse Current (IR) | ≤0.05 μA at VR = 17.6 V - ensures low leakage below knee voltage in standby mode |
| Total Power Dissipation (Ptot) | 590 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling on standard FR4 board |
| Thermal Resistance (Rth(j-sp)) | 210 K/W - determines temperature rise above solder point per watt dissipated |
| Forward Voltage (VF) | ≤0.9 V at IF = 10 mA - defines conduction loss when used in forward-biased protection paths |
| Non-repetitive Peak Reverse Power | 40 W at tp = 100 μs - supports transient overvoltage clamping without failure |
Pinout & Package
SOD123 surface-mount plastic package: 2-terminal, flat lead, 2.80 mm × 1.70 mm body, 0.70 mm lead width, cathode marked by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking band identifies this terminal for correct PCB orientation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; forms current path during Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| ±5 % Zener voltage tolerance | Enables cost-effective regulation where tight voltage accuracy is not critical, e.g., non-precision biasing |
| Low differential resistance (≤220 Ω) | Reduces output voltage deviation under load transients, improving stability in feedback loops |
| 210 K/W junction-to-solder-point thermal resistance | Allows direct thermal coupling to PCB copper, supporting >150 °C junction operation with modest heatsinking |
| Non-repetitive peak reverse power (40 W) | Provides robust ESD and surge immunity up to 100 μs pulses without derating |
| SOD123 footprint compatibility | Matches industry-standard reflow soldering profiles and pick-and-place machine tooling |
Applications
| Power Supply Rail Clamp | Reference Voltage Source |
|---|---|
|
Use Scenario: Clamping 24 V industrial sensor supply against transient spikes exceeding 28 V. IC Role / Device Role / Timing Role: Shunt regulator absorbing excess current during overvoltage events to protect downstream LDOs and ADCs. Use Value: Limits rail excursion to ≤23.3 V using 22 V Zener with 5 % tolerance, preventing damage to 25 V-rated components. |
Use Scenario: Generating stable 22 V reference for analog front-end gain calibration in test equipment. IC Role / Device Role / Timing Role: Precision voltage reference providing known potential for DAC/ADC offset trimming. Use Value: Delivers <±0.5 V stability over 0–70 °C due to +15.4 mV/K coefficient and low rdif, reducing calibration drift. |
| Overvoltage Protection Circuit | Signal Level Translation |
|
Use Scenario: Protecting microcontroller GPIO pins from accidental 24 V miswiring in factory automation I/O modules. IC Role / Device Role / Timing Role: Crowbar element diverting fault current when input exceeds safe threshold. Use Value: Activates at 20.8 V (min VZ), clamping within 100 ns to limit pin stress to <100 mJ per event. |
Use Scenario: Biasing op-amp inputs to 22 V common-mode level in high-side current sensing circuits. IC Role / Device Role / Timing Role: DC level shifter establishing fixed reference potential for differential amplification. Use Value: Maintains <1 % voltage error over 10 μA–5 mA bias current range, enabling accurate current measurement resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5248BS | 22 V nominal, ±5 %, SOD-123, 350 mW Ptot | Lower power rating reduces thermal margin in sustained clamp duty | Select when board space is constrained and peak power <350 mW |
| Vishay BZX84-C22 | 22 V nominal, ±5 %, SOT-23, 300 mW Ptot, higher rdif (≤300 Ω) | Smaller package but higher impedance degrades regulation under dynamic loads | Select for ultra-compact layouts where 220 Ω rdif is not required |
Compared with BZT52-C22X, MMBZ5248BS offers identical voltage spec but 41 % lower power handling, while BZX84-C22 trades SOD123 thermal performance for SOT-23 size-making BZT52-C22X optimal for thermally demanding 22 V regulation where 590 mW and 210 K/W Rth(j-sp) are decisive.
Availability
BZT52-C22X is available at Aetrix Electronics and suitable for industrial sensor interfaces, programmable logic controller (PLC) input protection, and analog signal conditioning requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZT52-C22X 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
Nexperia is a global semiconductor expert delivering high-performance, reliable discrete, logic, and MOSFET devices optimized for efficiency-critical applications in automotive, industrial, and consumer markets.
BZT52-C22X belongs to the BZT52 series of general-purpose Zener diodes designed for cost-sensitive, surface-mounted voltage regulation and protection in non-automotive industrial and commercial electronics.
FAQ
What is the maximum continuous reverse current the BZT52-C22X can sustain without degradation?
The BZT52-C22X has no defined maximum continuous reverse current rating; its safe operating limit is governed by power dissipation. At 22 V Zener voltage, sustained current must be limited to ≤26.8 mA to stay within the 590 mW total power dissipation limit at 25 °C ambient. Derating is required above 25 °C per the 210 K/W junction-to-solder-point thermal resistance.
How does the temperature coefficient affect regulation accuracy over –40 °C to +125 °C?
With a specified +15.4 mV/K temperature coefficient at 5 mA, the BZT52-C22X exhibits approximately +1.54 V total drift across a 100 K temperature span. This translates to ±3.5 % deviation from nominal 22 V over that range, making it suitable for non-precision applications where absolute voltage stability is secondary to cost and size.
Can BZT52-C22X replace BZT52-B22 in an existing design?
Yes, BZT52-C22X can replace BZT52-B22 electrically and mechanically: both share identical SOD123 package, 22 V nominal Zener voltage, and 2-pin pinout. The key difference is tolerance-BZT52-B22 offers ±2 %, while BZT52-C22X provides ±5 %. Use C-series only if the application tolerates wider voltage variation.
What is the minimum reverse voltage required to achieve stable Zener conduction?
Stable Zener conduction begins near the knee voltage, which for BZT52-C22X is approximately 17.6 V-the voltage at which reverse current reaches 0.05 μA. Reliable regulation requires operation above 20.8 V (minimum VZ) with ≥1 mA current to ensure low differential resistance and minimal voltage drift.
BZT52-C22X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 22.05 V
- Tolerance:
- ±5.7%
- Power - Max:
- 350 mW
- Impedance (Max) (Zzt):
- 25 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 15.4 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
BZT52-C22X FAQ
1.How can I place an order for BZT52-C22X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52-C22X 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 BZT52-C22X reliable?
The price and inventory of BZT52-C22X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52-C22X is usually 5 days.
3.What payment methods are accepted for BZT52-C22X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52-C22X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52-C22X?
BZT52-C22X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52-C22X 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 BZT52-C22X?
For technical support, including BZT52-C22X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52-C22X requirements.
6.How does Aetrix verify that BZT52-C22X is sourced from the original manufacturer or authorized distributors?
All BZT52-C22X 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 BZT52-C22X meets industry standards.
7.What is the process for return or replacement of BZT52-C22X?
All BZT52-C22X units undergo pre-shipment inspection (PSI). If there is an issue with BZT52-C22X, 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 BZT52-C22X part is unused and in its original packaging.
Return procedure for BZT52-C22X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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