NXP Semiconductors BZX84-C5V6/CH/LFVL
- Part No.:
- BZX84-C5V6/CH/LFVL
- Manufacturer:
- NXP Semiconductors
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84-C5V6/CH/LFVL.pdf
- Description:
- DIODE ZENER 5.6V 250MW SOT23
- Quantity:
- Payment:

- Shipping:

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Product details
Overview
BZX84-C5V6/CH/LFVL from NXP Semiconductors is a ±5 % tolerance Zener voltage regulator diode in SOT23 (TO-236AB) package, rated for 5.6 V nominal breakdown voltage at 5 mA, 250 mW total power dissipation, and AEC-Q101 qualified for automotive use.
For engineers reviewing the BZX84-C5V6/CH/LFVL datasheet, BZX84-C5V6/CH/LFVL pinout, BZX84-C5V6/CH/LFVL application, or BZX84-C5V6/CH/LFVL equivalent, this device serves as a low-power precision reference or overvoltage clamp in space-constrained PCBs where thermal resistance to ambient (500 K/W) and non-repetitive surge capability (40 W) are critical design factors.
Technical Context
This Zener diode operates in reverse-bias breakdown mode to maintain stable voltage across its terminals under varying load and temperature conditions. Its differential resistance of 80 Ω at 5 mA and temperature coefficient of −2.0 to +2.5 mV/K enable predictable regulation within industrial and automotive ambient ranges (−65 °C to +150 °C junction).
The device features a three-terminal SOT23 configuration with anode (Pin 1), unconnected (Pin 2), and cathode (Pin 3), optimized for surface-mount assembly on FR4 PCBs with standard footprint and tin-plated copper. It supports pulse operation up to 100 μs with ≤0.02 duty cycle per IEC 60134 limiting values.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VZ) | 5.2 V to 6.0 V at IZ = 5 mA - defines usable regulation window for 5.6 V nominal reference |
| Tolerance | ±5 % - specifies maximum deviation from nominal 5.6 V under specified test conditions |
| Total Power Dissipation (Ptot) | 250 mW at Tamb ≤ 25 °C - sets continuous DC power limit before thermal derating applies |
| Differential Resistance (rdif) | 80 Ω typical at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Reverse Current (IR) | ≤1 μA at VR = 3.5 V - ensures low leakage in standby or high-impedance sensing circuits |
| Non-repetitive Peak Reverse Power | 40 W for tp ≤ 100 μs - enables transient overvoltage suppression without failure |
| AEC-Q101 Qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
SOT23 (TO-236AB) plastic surface-mounted package with 3 leads, 2.8 mm × 1.4 mm body, 0.95 mm height, and standard FR4-compatible footprint per Figure 8 and Figure 9 of NXP BZX84_SER Rev. 6.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Connected to lower-potential side of regulated node; forward bias path for test/verification |
| 2 | Not Connected (n.c.) | Internal die pad with no electrical connection; must remain floating on PCB layout |
| 3 | Cathode (K) | Connected to higher-potential side; primary current entry point during Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMT packaging | SOT23 footprint enables high-density routing and automated assembly in compact consumer and automotive PCBs |
| Automotive qualification | AEC-Q101 compliance ensures suitability for engine control, body electronics, and ADAS subsystems |
| Precision voltage reference | 5.6 V nominal with ±5 % tolerance provides cost-effective regulation where tight accuracy is not required |
| Thermal robustness | Junction-to-ambient thermal resistance of 500 K/W allows operation up to +150 °C junction temperature |
| Transient surge handling | 40 W non-repetitive peak power rating supports protection against ESD and load-dump events |
Applications
| Power Supply Rail Clamping | Microcontroller Reset Circuit |
|---|---|
Use Scenario: Clamp 5 V logic rail against overvoltage transients in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Zener shunt element absorbing excess energy above 5.6 V threshold. Use Value: Prevents MCU latch-up or damage during hot-swap or inductive switching events without external active components. |
Use Scenario: Generate clean reset signal for ARM Cortex-M0+ microcontrollers during brown-out conditions. IC Role / Device Role / Timing Role: Reference diode in RC-reset circuit defining precise 5.6 V trip point. Use Value: Ensures deterministic reset assertion below 5.2 V while minimizing component count versus dedicated supervisor ICs. |
| Automotive Sensor Biasing | Industrial Analog Signal Conditioning |
Use Scenario: Provide stable 5.6 V bias for Hall-effect position sensors in powertrain modules. IC Role / Device Role / Timing Role: Low-noise voltage reference source for sensor excitation. Use Value: Maintains sensor linearity and repeatability across −40 °C to +125 °C ambient with AEC-Q101 validated reliability. |
Use Scenario: Regulate supply to op-amp input stages in 4–20 mA transmitter front-ends. IC Role / Device Role / Timing Role: Local shunt regulator isolating analog section from noisy digital rails. Use Value: Reduces PSRR dependency and improves offset stability by delivering <1 μA leakage at 3.5 V reverse bias. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5232BS-7-F (Diodes Inc.) | Same 5.6 V nominal, ±5 % tolerance, SOT23 package; 200 mW Ptot, 100 Ω rdif at 20 mA | Lower power rating and higher dynamic impedance reduce regulation accuracy under variable load | Select when legacy Diodes Inc. sourcing is preferred and thermal margin exceeds 50 °C ambient |
| 1SMA5919BT3G (ON Semiconductor) | 5.6 V nominal, ±5 %, SMA package (larger); 1.5 W Ptot, 3 Ω rdif at 42 mA | SMA's higher power and lower impedance suit high-current clamping but require 3× PCB area | Choose for surge-heavy industrial environments where 40 W peak power must be sustained repeatedly |
Compared with MMBZ5232BS-7-F, BZX84-C5V6/CH/LFVL offers superior thermal resistance control in dense layouts; versus 1SMA5919BT3G, it trades peak power headroom for board-space efficiency and automotive qualification.
Availability
BZX84-C5V6/CH/LFVL is available at Aetrix Electronics and suitable for automotive sensor modules, industrial 4–20 mA transmitters, and battery-powered IoT edge devices requiring stable component supply with AEC-Q101 assurance.
Supply support for BZX84-C5V6/CH/LFVL 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 regulator portfolio, designed specifically for cost-sensitive, space-constrained applications requiring reliable Zener reference or clamping functionality in harsh environments.
FAQ
What is the exact Zener voltage tolerance for BZX84-C5V6/CH/LFVL?
The BZX84-C5V6/CH/LFVL has a guaranteed breakdown voltage range of 5.2 V to 6.0 V at 5 mA test current, corresponding to the "C" grade ±5 % tolerance per NXP BZX84_SER Rev. 6 datasheet Table 8. This tolerance reflects manufacturing spread under standardized test conditions and does not include temperature drift or long-term aging effects.
Is BZX84-C5V6/CH/LFVL suitable for automotive applications?
Yes, BZX84-C5V6/CH/LFVL is AEC-Q101 qualified per Section 8.1 of the NXP datasheet, having passed stress tests for temperature cycling, high-temperature reverse bias, and ESD. It is approved for use in automotive body electronics, infotainment power supplies, and sensor interfaces operating within −40 °C to +125 °C ambient.
What is the maximum forward current rating for BZX84-C5V6/CH/LFVL?
The absolute maximum forward current for BZX84-C5V6/CH/LFVL is 200 mA per Table 5 (Limiting Values) in the NXP datasheet. However, forward conduction is not its intended operating mode; sustained forward current above 10 mA may cause excessive self-heating and compromise Zener regulation stability.
How does the non-connected pin (Pin 2) affect PCB layout for BZX84-C5V6/CH/LFVL?
Pin 2 of BZX84-C5V6/CH/LFVL is internally unconnected and must remain electrically floating on the PCB. NXP's SOT23 footprint guidelines (Figure 9) specify no solder mask opening or copper pour under Pin 2 to avoid parasitic coupling or unintended thermal paths that could alter junction temperature behavior during regulation.
What is the thermal resistance from junction to ambient for BZX84-C5V6/CH/LFVL?
The thermal resistance from junction to ambient (Rth(j-a)) for BZX84-C5V6/CH/LFVL is 500 K/W when mounted on a standard FR4 PCB with single-sided 1 oz copper and tin plating, as specified in Table 6 of the NXP datasheet. This value assumes free-air convection and defines the baseline for thermal derating above 25 °C ambient.
BZX84-C5V6/CH/LFVL 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):
- 5.6 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 2 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-C5V6/CH/LFVL FAQ
1.How can I place an order for BZX84-C5V6/CH/LFVL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84-C5V6/CH/LFVL 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-C5V6/CH/LFVL reliable?
The price and inventory of BZX84-C5V6/CH/LFVL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84-C5V6/CH/LFVL is usually 5 days.
3.What payment methods are accepted for BZX84-C5V6/CH/LFVL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-C5V6/CH/LFVL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84-C5V6/CH/LFVL?
BZX84-C5V6/CH/LFVL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84-C5V6/CH/LFVL 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-C5V6/CH/LFVL?
For technical support, including BZX84-C5V6/CH/LFVL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-C5V6/CH/LFVL requirements.
6.How does Aetrix verify that BZX84-C5V6/CH/LFVL is sourced from the original manufacturer or authorized distributors?
All BZX84-C5V6/CH/LFVL 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-C5V6/CH/LFVL meets industry standards.
7.What is the process for return or replacement of BZX84-C5V6/CH/LFVL?
All BZX84-C5V6/CH/LFVL units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-C5V6/CH/LFVL, 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-C5V6/CH/LFVL part is unused and in its original packaging.
Return procedure for BZX84-C5V6/CH/LFVL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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