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NXP Semiconductors BZX84-B5V1/LF1R
- Part No.:
- BZX84-B5V1/LF1R
- Manufacturer:
- NXP Semiconductors
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84-B5V1/LF1R.pdf
- Description:
- DIODE ZENER 5.1V 250MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:8,316
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Product details
Overview
BZX84-B5V1/LF1R from NXP Semiconductors is a ±2 % tolerance Zener voltage regulator diode in SOT23 (TO-236AB) package, rated for 5.1 V nominal breakdown voltage at 5 mA, 250 mW total power dissipation, and AEC-Q101 qualification for automotive use. It provides stable reference voltage in low-power supply regulation and overvoltage protection circuits.
For engineers reviewing the BZX84-B5V1/LF1R datasheet, BZX84-B5V1/LF1R pinout, BZX84-B5V1/LF1R application, or BZX84-B5V1/LF1R equivalent, key selection considerations include its ±2 % VZ tolerance, 400–480 Ω differential resistance at 5 mA, 2 µA max reverse current at 3.8 V, −0.8 to +1.2 mV/K temperature coefficient, and SOT23 footprint compatibility with automated assembly.
Technical Context
This device operates as a two-terminal silicon Zener diode, conducting in reverse bias above its specified breakdown voltage to clamp or regulate voltage. Its behavior is defined by sharp knee characteristics, low dynamic impedance, and predictable temperature drift across the operating junction temperature range of −65 °C to +150 °C.
Designed for surface-mount applications on FR4 PCBs with standard tin-plated copper, it supports pulse operation up to 40 W non-repetitive peak reverse power (100 µs, square wave) and maintains regulation under DC forward currents up to 200 mA and reverse currents up to 6 A peak surge.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VZ) | 5.0 V to 5.2 V at IZ = 5 mA - ensures precise 5.1 V nominal regulation within ±2 % tolerance band |
| Differential Resistance (rdif) | 400 Ω to 480 Ω at IZ = 5 mA - defines output impedance affecting regulation stability under load variation |
| Reverse Current (IR) | ≤2 µA at VR = 3.8 V - guarantees low leakage below regulation threshold, critical for battery-powered systems |
| Temperature Coefficient (SZ) | −0.8 mV/K to +1.2 mV/K - quantifies VZ drift per degree Celsius, enabling thermal error budgeting |
| Total Power Dissipation (Ptot) | 250 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling on standard PCB layout |
| Non-repetitive Peak Reverse Power | 40 W (100 µs pulse) - supports transient overvoltage suppression without failure |
| Junction Temperature Range | −65 °C to +150 °C - validates operation in extended industrial and automotive ambient conditions |
Pinout & Package
Package: SOT23 (TO-236AB), plastic surface-mounted package with 3 leads; dimensions 2.9 mm × 1.3 mm × 1.0 mm (L × W × H), standard footprint per Fig 9/10 in datasheet Rev. 6.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward-biased terminal; connects to lower-potential node in regulation path |
| 2 | Not Connected (n.c.) | Internally unconnected lead; must remain floating-no PCB trace or solder joint |
| 3 | Cathode (K) | Reverse-biased terminal; connects to higher-potential node and serves as voltage reference output |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity testing, and mechanical shock |
| ±2 % VZ tolerance | Enables tighter system-level voltage margin control than ±5 % variants, reducing need for post-regulation trimming |
| SOT23 package | Supports high-density PCB layouts and reflow/wave soldering per IPC-7095 guidelines |
| Low leakage (≤2 µA @ 3.8 V) | Minimizes standby current in always-on circuits such as microcontroller reset supervisors or sensor bias networks |
| Thermal resistance (Rth(j-a)) | 500 K/W in free air - allows accurate junction temperature estimation for derating calculations |
Applications
| Power Supply Regulation | Overvoltage Protection |
|---|---|
|
Use Scenario: Stabilizing 5 V rail in low-current auxiliary supplies for MCU peripherals or analog sensors. IC Role / Device Role / Timing Role: Two-terminal shunt regulator providing fixed reference voltage via reverse-bias conduction. Use Value: Maintains output within ±2 % across temperature and line variations without external feedback components. |
Use Scenario: Clamping transient spikes on 5 V I/O lines exposed to ESD or inductive switching noise. IC Role / Device Role / Timing Role: Fast-acting voltage clamp absorbing surge energy before downstream IC damage occurs. Use Value: Withstands 40 W non-repetitive pulses (100 µs), limiting voltage to ≤5.2 V during transients. |
| Reference Voltage Source | Automotive Subsystem Biasing |
|
Use Scenario: Generating precision bias for op-amp comparators or ADC reference dividers in industrial controls. IC Role / Device Role / Timing Role: Low-drift Zener element delivering stable DC reference independent of supply ripple. Use Value: Temperature coefficient of −0.8 to +1.2 mV/K enables <10 mV total drift over −40 °C to +125 °C. |
Use Scenario: Providing regulated 5.1 V bias to LIN transceivers or CAN node supervisors in vehicle body electronics. IC Role / Device Role / Timing Role: AEC-Q101 qualified shunt regulator ensuring functional safety compliance in automotive subsystems. Use Value: Qualified per AEC-Q101 stress tests confirms suitability for 15-year automotive service life under thermal cycling and vibration. |
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 MMBZ5221BS | Same SOT23 package, 5.1 V ±5 % tolerance, 225 mW Ptot, higher rdif (600 Ω typ) | Lower accuracy and power rating; suitable only where ±5 % regulation suffices and thermal headroom is constrained | Select when cost sensitivity outweighs precision requirements and AEC-Q101 is not mandated |
| Vishay BZX84-C5V1 | Same SOT23 package, 5.1 V ±5 % tolerance, identical Ptot and thermal specs, no AEC-Q101 qualification | Lacks automotive qualification; acceptable for commercial/industrial use but not for automotive ECUs or ADAS modules | Choose for non-automotive designs requiring same footprint and basic regulation, with relaxed reliability validation |
Compared with MMBZ5221BS and BZX84-C5V1, BZX84-B5V1/LF1R delivers tighter ±2 % voltage tolerance, AEC-Q101 certification, and lower dynamic impedance-making it the preferred choice for automotive and high-accuracy industrial regulation where long-term stability and qualification evidence are mandatory.
Availability
BZX84-B5V1/LF1R is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor signal conditioning, and consumer power management systems requiring stable component supply and full traceability.
Supply support for BZX84-B5V1/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 is part of NXP's broad portfolio of discrete protection and regulation devices, engineered specifically for high-reliability, space-constrained applications demanding AEC-Q101 compliance and consistent parametric performance across temperature and lifetime.
FAQ
What is the exact Zener voltage tolerance for BZX84-B5V1/LF1R?
The BZX84-B5V1/LF1R has a guaranteed breakdown voltage range of 5.0 V to 5.2 V at 5 mA test current, corresponding to a ±2 % tolerance about the nominal 5.1 V value. This is explicitly defined in Table 8 of the NXP datasheet Rev. 6 and distinguishes it from the ±1 % (BZX84-A5V1) and ±5 % (BZX84-C5V1) variants in the same family.
Is BZX84-B5V1/LF1R qualified for automotive applications?
Yes, BZX84-B5V1/LF1R is AEC-Q101 qualified per Section 8.1 of the NXP datasheet Rev. 6. This qualification covers stress tests including high-temperature operating life, temperature cycling, and mechanical shock-validating its use in automotive ECUs, body control modules, and infotainment systems.
What is the maximum continuous power dissipation for BZX84-B5V1/LF1R?
BZX84-B5V1/LF1R has a total power dissipation limit of 250 mW at ambient temperatures ≤25 °C, as specified in Table 5 (Limiting Values) and Table 1 (Quick Reference Data). Derating is required above 25 °C using the thermal resistance Rth(j-a) = 500 K/W.
Does BZX84-B5V1/LF1R have a connected pin 2?
No, pin 2 of BZX84-B5V1/LF1R is internally not connected (n.c.), as confirmed in Table 2 (Pinning) of the datasheet. It must remain unconnected on the PCB-no trace, pad, or solder joint should be applied to this terminal.
What marking code identifies BZX84-B5V1/LF1R on the device body?
BZX84-B5V1/LF1R is marked with code "R1" on its top surface, as listed in Table 4 (Marking codes) of the NXP datasheet Rev. 6. The "*" in the table is a placeholder for manufacturing site code; actual units show "R1" followed by date/lot codes.
BZX84-B5V1/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):
- 5.1 V
- Tolerance:
- ±2%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 60 Ohms
- Current - Reverse Leakage @ Vr:
- 2 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-B5V1/LF1R FAQ
1.How can I place an order for BZX84-B5V1/LF1R through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84-B5V1/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-B5V1/LF1R reliable?
The price and inventory of BZX84-B5V1/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-B5V1/LF1R is usually 5 days.
3.What payment methods are accepted for BZX84-B5V1/LF1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-B5V1/LF1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84-B5V1/LF1R?
BZX84-B5V1/LF1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84-B5V1/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-B5V1/LF1R?
For technical support, including BZX84-B5V1/LF1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-B5V1/LF1R requirements.
6.How does Aetrix verify that BZX84-B5V1/LF1R is sourced from the original manufacturer or authorized distributors?
All BZX84-B5V1/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-B5V1/LF1R meets industry standards.
7.What is the process for return or replacement of BZX84-B5V1/LF1R?
All BZX84-B5V1/LF1R units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-B5V1/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-B5V1/LF1R part is unused and in its original packaging.
Return procedure for BZX84-B5V1/LF1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84-B5V1/LF1R Tags
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BZT52C5V6T-7
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MMSZ5231B-7-F
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BZT52C15-7-F
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onsemi
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MMSZ5245BS-7-F
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Diodes Incorporated
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MM5Z5V1ST1G
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