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NXP Semiconductors BZX84-C22/LF1R
- Part No.:
- BZX84-C22/LF1R
- Manufacturer:
- NXP Semiconductors
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84-C22/LF1R.pdf
- Description:
- DIODE ZENER 22V 250MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:3,239
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Product details
Overview
BZX84-C22/LF1R from NXP Semiconductors is a ±5 % tolerance Zener voltage regulator diode in SOT23 (TO-236AB) package, rated for 22 V nominal breakdown voltage at 5 mA, 250 mW total power dissipation, and AEC-Q101 qualified for automotive use. It provides stable reference voltage in low-power supply regulation and overvoltage protection circuits.
For engineers reviewing the BZX84-C22/LF1R datasheet, BZX84-C22/LF1R pinout, BZX84-C22/LF1R application, or BZX84-C22/LF1R equivalent, key selection criteria include its 22 V Zener voltage tolerance (±5 %), differential resistance of 60 Ω at 5 mA, reverse current ≤0.05 μA at 17.6 V, temperature coefficient of +16.4 mV/K, and non-repetitive peak reverse current capability of 1.25 A.
Technical Context
The BZX84-C22/LF1R operates as a two-terminal silicon planar Zener diode optimized for voltage regulation and reference functions in space-constrained SMD designs. Its junction construction enables stable reverse breakdown with controlled temperature coefficient (+16.4 mV/K) and low dynamic impedance (60 Ω typical at IZ = 5 mA).
Designed for operation up to 150 °C junction temperature and qualified per AEC-Q101, it supports automotive-grade reliability under thermal cycling and humidity stress. The device exhibits ≤0.05 μA reverse leakage at VR = 17.6 V and forward voltage of ≤0.9 V at IF = 10 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 22 V nominal at IZ = 5 mA; ±5 % tolerance band (20.8 V to 23.3 V) defines usable regulation window in precision biasing |
| Total Power Dissipation (Ptot) | 250 mW at Tamb ≤25 °C; limits continuous DC current to ~11.4 mA at 22 V, constraining use to low-power regulation |
| Differential Resistance (rdif) | 60 Ω typical at IZ = 5 mA; determines output impedance and load regulation sensitivity in shunt reference applications |
| Reverse Current (IR) | ≤0.05 μA at VR = 17.6 V; ensures minimal quiescent power loss and high impedance in standby mode |
| Temperature Coefficient (SZ) | +16.4 mV/K typical; positive drift improves stability in warm environments versus negative-coefficient Zeners |
| Non-repetitive Peak Reverse Current (IZSM) | 1.25 A at tp = 100 μs; supports transient overvoltage clamping without device failure |
| Forward Voltage (VF) | ≤0.9 V at IF = 10 mA; enables low-loss polarity checking and basic rectification in dual-role circuits |
Pinout & Package
SOT23 (TO-236AB) plastic surface-mounted package with 3 leads; 2.8 mm × 1.4 mm footprint, 1.1 mm height, and standard FR4 PCB mounting per JEDEC MO-203.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Connects to lower-potential node in reverse-bias configuration; required for proper Zener conduction path |
| 2 | Not Connected (n.c.) | Internal die pad with no electrical connection; must remain unconnected on PCB to avoid parasitic coupling |
| 3 | Cathode (K) | Connects to higher-potential node; carries full Zener current during regulation; primary thermal path to PCB copper |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive underhood and infotainment systems requiring extended temperature (-65 °C to +150 °C) and reliability compliance |
| ±5 % Zener tolerance (C-series) | Cost-optimized regulation accuracy suitable for non-critical biasing, power supply feedback, and overvoltage detection |
| Low differential resistance (60 Ω) | Minimizes output voltage variation under load changes, improving regulation stability in shunt configurations |
| 1.25 A non-repetitive surge rating | Enables robust transient suppression without external series limiting resistors in short-duration fault conditions |
| SOT23 package compatibility | Supports automated pick-and-place assembly and reflow soldering per J-STD-020; footprint matches industry-standard 0805 equivalents |
Applications
| Automotive ECU Power Monitoring | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Monitoring 24 V vehicle battery rail for undervoltage/overvoltage events in engine control units. IC Role / Device Role / Timing Role: Shunt Zener reference providing threshold detection point for comparator input. Use Value: Stable 22 V reference enables accurate ±10 % window detection with <0.05 μA leakage, minimizing system standby current. |
Use Scenario: Providing precise bias voltage for analog front-end op-amps in 4–20 mA industrial transmitters. IC Role / Device Role / Timing Role: Low-drift voltage reference source stabilizing amplifier offset and gain calibration points. Use Value: +16.4 mV/K temperature coefficient counterbalances op-amp drift, reducing calibration frequency in wide-temperature deployments. |
| Consumer Power Adapter Feedback | Medical Device Overvoltage Clamp |
Use Scenario: Secondary-side voltage sensing in isolated flyback AC/DC adapters for smartphone chargers. IC Role / Device Role / Timing Role: Zener element in optocoupler feedback loop regulating output voltage via TL431-like topology. Use Value: 250 mW power rating allows direct integration without heatsinking; 60 Ω rdif ensures tight regulation across line/load variations. |
Use Scenario: Protecting ADC inputs in portable diagnostic equipment from accidental 30 V transients. IC Role / Device Role / Timing Role: Fast-response shunt clamp absorbing energy before sensitive analog circuitry. Use Value: 1.25 A IZSM rating clamps 100 μs surges without degradation, preserving signal chain integrity per IEC 61000-4-5 Level 3. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5247BS-7-F | 22 V, ±5 %, SOT23, 200 mW Ptot, 70 Ω rdif at 20 mA | Lower power rating reduces surge margin; higher rdif increases load regulation error | Select when board-level thermal management restricts 250 mW operation or legacy BOM mandates ON Semi sourcing |
| Vishay BZX84-C22-TP | 22 V, ±5 %, SOT23, 300 mW Ptot, 55 Ω rdif at 5 mA, AEC-Q101 qualified | Higher power and lower impedance improve regulation but require layout review for thermal relief | Prefer for new automotive designs needing enhanced surge resilience or tighter voltage stability under varying loads |
Compared with MMBZ5247BS-7-F, BZX84-C22/LF1R delivers 25 % higher power handling and 14 % lower dynamic impedance, enabling more robust clamping; versus BZX84-C22-TP, it trades 50 mW headroom for NXP's established automotive qualification history and consistent marking code (Y8*) traceability.
Availability
BZX84-C22/LF1R is available at Aetrix Electronics and suitable for automotive ECU monitoring, industrial sensor biasing, consumer power adapter feedback, and medical overvoltage protection requiring stable component supply across production lifecycles.
Supply support for BZX84-C22/LF1R 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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.
The BZX84 series belongs to NXP's discrete voltage regulation portfolio, engineered for cost-sensitive, high-volume applications demanding AEC-Q101 reliability and standardized SOT23 packaging.
FAQ
What is the Zener voltage tolerance of BZX84-C22/LF1R?
The BZX84-C22/LF1R has a nominal Zener voltage of 22 V with a ±5 % tolerance, meaning its actual breakdown voltage falls between 20.8 V and 23.3 V when tested at 5 mA. This C-series tolerance balances cost and performance for non-critical regulation tasks where tight voltage accuracy is not required. The BZX84-C22/LF1R maintains this specification across its qualified operating temperature range.
Is BZX84-C22/LF1R suitable for automotive applications?
Yes, BZX84-C22/LF1R is AEC-Q101 qualified by NXP Semiconductors, confirming its suitability for automotive applications including engine control units, body electronics, and infotainment systems. It operates reliably from −65 °C to +150 °C junction temperature and meets stress test requirements for humidity, temperature cycling, and mechanical shock. BZX84-C22/LF1R is commonly deployed in 12 V/24 V rail monitoring and sensor biasing within automotive ECUs.
What is the maximum non-repetitive peak reverse current for BZX84-C22/LF1R?
The BZX84-C22/LF1R supports a non-repetitive peak reverse current (IZSM) of 1.25 A under 100 μs square-wave pulse conditions at Tj = 25 °C. This rating enables effective transient voltage suppression without device failure during short-duration overvoltage events. Engineers must ensure external current-limiting resistors or system-level protection prevents repeated surges exceeding this limit, as BZX84-C22/LF1R is not rated for repetitive operation at IZSM.
How does the temperature coefficient affect BZX84-C22/LF1R performance?
The BZX84-C22/LF1R exhibits a typical temperature coefficient (SZ) of +16.4 mV/K, meaning its Zener voltage increases by approximately 16.4 mV per degree Celsius rise in junction temperature. This positive drift helps compensate for negative temperature effects in associated circuitry, such as op-amp input offsets. In contrast to low-voltage Zeners with negative coefficients, BZX84-C22/LF1R offers improved thermal stability above 5.6 V, making it well-suited for reference applications in variable-temperature environments.
What package type is used for BZX84-C22/LF1R?
BZX84-C22/LF1R uses the SOT23 (TO-236AB) surface-mount plastic package - a 3-lead, 2.8 mm × 1.4 mm outline with 1.1 mm height. Pin 1 is anode, Pin 2 is not connected, and Pin 3 is cathode. This JEDEC-standard package supports automated assembly, reflow soldering per J-STD-020, and thermal dissipation via the cathode pad to PCB copper. The BZX84-C22/LF1R marking code "Y8*" is laser-etched on the top surface for traceability.
BZX84-C22/LF1R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 22 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 55 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 15.4 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23 (TO-236AB)
BZX84-C22/LF1R FAQ
1.How can I place an order for BZX84-C22/LF1R through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84-C22/LF1R 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 BZX84-C22/LF1R reliable?
The price and inventory of BZX84-C22/LF1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84-C22/LF1R is usually 5 days.
3.What payment methods are accepted for BZX84-C22/LF1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-C22/LF1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84-C22/LF1R?
BZX84-C22/LF1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84-C22/LF1R 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 BZX84-C22/LF1R?
For technical support, including BZX84-C22/LF1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-C22/LF1R requirements.
6.How does Aetrix verify that BZX84-C22/LF1R is sourced from the original manufacturer or authorized distributors?
All BZX84-C22/LF1R 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 BZX84-C22/LF1R meets industry standards.
7.What is the process for return or replacement of BZX84-C22/LF1R?
All BZX84-C22/LF1R units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-C22/LF1R, 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 BZX84-C22/LF1R part is unused and in its original packaging.
Return procedure for BZX84-C22/LF1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84-C22/LF1R Tags
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MM5Z5V1ST1G
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