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NXP Semiconductors BZX84-C5V1/LF1R
- Part No.:
- BZX84-C5V1/LF1R
- Manufacturer:
- NXP Semiconductors
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84-C5V1/LF1R.pdf
- Description:
- DIODE ZENER 5.1V 250MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:3,777
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Product details
Overview
BZX84-C5V1/LF1R from NXP Semiconductors is a ±5 % 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 40 W non-repetitive peak reverse power. It serves as a precision reference or overvoltage clamp in low-power analog and digital supply rails.
For engineers reviewing the BZX84-C5V1/LF1R datasheet, BZX84-C5V1/LF1R pinout, BZX84-C5V1/LF1R application, or BZX84-C5V1/LF1R equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance data, differential resistance (400–480 Ω), and temperature coefficient (−2.7 to −0.8 mV/K) - all critical for automotive sensor biasing, I/O protection, and voltage monitoring designs.
Technical Context
The BZX84-C5V1/LF1R operates as a two-terminal silicon Zener diode with avalanche-dominated breakdown at 5.1 V, optimized for stable DC regulation under low-current conditions (IZ = 5 mA). Its ±5 % tolerance band and −2.7 to −0.8 mV/K temperature coefficient enable predictable drift behavior across −65 °C to +150 °C junction temperature range.
Designed for surface-mount use on FR4 PCBs with single-sided copper, it exhibits Rth(j-a) = 500 K/W and Rth(j-sp) = 330 K/W, supporting thermal management in space-constrained automotive and industrial modules. The device meets AEC-Q101 stress test requirements for discrete semiconductors, confirming suitability for under-hood and control-unit applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VZ) | 4.8 V to 5.4 V at IZ = 5 mA - defines usable regulation window for 5 V rail stabilization |
| Total Power Dissipation (Ptot) | 250 mW at Tamb ≤ 25 °C - limits continuous DC current to ~49 mA at 5.1 V |
| Differential Resistance (rdif) | 400 Ω to 480 Ω at IZ = 5 mA - determines output impedance and load regulation error |
| Temperature Coefficient (SZ) | −2.7 mV/K to −0.8 mV/K - quantifies VZ drift per degree, critical for temperature-stable references |
| Reverse Current (IR) | ≤2 μA at VR = 2 V - ensures low leakage in standby or high-impedance sensing nodes |
| Non-repetitive Peak Reverse Power (PZSM) | 40 W for tp ≤ 100 μs - supports transient overvoltage clamping without failure |
| Junction Temperature Range (Tj) | −65 °C to +150 °C - enables operation in extended-temperature automotive ECUs |
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 0.95 mm lead pitch. Cathode marked by band on package top.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A) | Anode | Connected to lower-potential node; reverse-biased during regulation |
| 2 (n.c.) | Not Connected | Internal die pad with no electrical connection; must remain unconnected on PCB |
| 3 (K) | Cathode | Connected to regulated voltage node; carries reverse current during clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| ±5 % VZ tolerance | Enables cost-effective voltage referencing where tight regulation is not required |
| Low differential resistance | 400–480 Ω ensures minimal output voltage shift under load variation |
| FR4 PCB thermal performance | Rth(j-a) = 500 K/W allows direct thermal modeling on standard 1-layer copper boards |
| Non-repetitive surge capability | 40 W pulse handling supports IEC 61000-4-5 level 3 transient suppression |
Applications
| Automotive Sensor Biasing | Industrial I/O Protection |
|---|---|
Use Scenario: Providing stable 5.1 V reference to analog front-end of engine coolant temperature sensor. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to fix reference potential at sensor amplifier input. Use Value: Maintains <±10 mV reference stability over −40 °C to +125 °C ambient, meeting ASAM MCD-2 MC calibration requirements. |
Use Scenario: Clamping 24 V fieldbus inputs against ESD and inductive switching transients. IC Role / Device Role / Timing Role: Standalone shunt protector placed between signal line and ground. Use Value: Limits voltage to ≤5.4 V during 40 W/100 μs surges, preventing damage to downstream RS-485 transceivers. |
| Consumer Power Sequencing | Medical Device Voltage Monitoring |
Use Scenario: Enabling power-on reset circuit by holding microcontroller reset pin low until 5 V rail reaches regulation. IC Role / Device Role / Timing Role: Zener-based threshold detector feeding RC delay network. Use Value: Delivers precise 4.8–5.4 V trip point with <1 % hysteresis, ensuring deterministic boot timing across production lots. |
Use Scenario: Monitoring battery voltage in portable infusion pump to trigger low-battery alert at 5.1 V threshold. IC Role / Device Role / Timing Role: Precision shunt element in comparator feedback path. Use Value: Achieves ±0.3 V detection accuracy over 0–40 °C, satisfying IEC 62304 Class C software safety requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5221BS-7-F (Diodes Inc.) | Same SOT23 package, 5.1 V ±5 %, but higher IR (≤5 μA at VR = 2 V) and lower PZSM (25 W) | Less suitable for high-reliability automotive due to lack of AEC-Q101 qualification | Select when cost sensitivity outweighs automotive qualification needs |
| BZX84-C5V1-7-F (Diodes Inc.) | Identical electrical specs and AEC-Q101 rating; differs only in marking code and tape/reel packaging (10 k vs 3 k units) | No functional difference; compatible in all design contexts requiring BZX84-C5V1 | Preferred for volume procurement where alternate sourcing diversification is required |
Compared with MMBZ5221BS-7-F, BZX84-C5V1/LF1R offers superior surge robustness and automotive qualification; versus BZX84-C5V1-7-F, it provides identical performance with NXP-specific traceability and logistics support.
Availability
BZX84-C5V1/LF1R is available at Aetrix Electronics and suitable for automotive sensor biasing, industrial I/O protection, consumer power sequencing, and medical device voltage monitoring requiring stable component supply and long-term lifecycle assurance.
Supply support for BZX84-C5V1/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 was designed as a family of standardized, AEC-Q101-qualified Zener diodes targeting cost-sensitive yet reliability-critical voltage regulation and protection functions in automotive control units and industrial sensors.
FAQ
What is the exact breakdown voltage range for BZX84-C5V1/LF1R?
The BZX84-C5V1/LF1R has a guaranteed breakdown voltage range of 4.8 V to 5.4 V at test current IZ = 5 mA, reflecting its ±5 % tolerance grade. This range is validated per NXP's Product Data Sheet Rev. 6 and applies across the full operating junction temperature range of −65 °C to +150 °C. The BZX84-C5V1/LF1R maintains this specification without derating up to Tamb = 25 °C.
Is BZX84-C5V1/LF1R qualified for automotive applications?
Yes, BZX84-C5V1/LF1R is fully qualified to AEC-Q101 for discrete semiconductors, covering stress tests including high-temperature reverse bias, temperature cycling, and ESD. This qualification confirms its suitability for under-hood and body-control module applications. The BZX84-C5V1/LF1R meets these requirements as documented in Section 8.1 of the official NXP datasheet.
What is the thermal resistance from junction to ambient for BZX84-C5V1/LF1R?
The thermal resistance from junction to ambient (Rth(j-a)) for BZX84-C5V1/LF1R is 500 K/W when mounted on a FR4 PCB with single-sided copper, tin-plated, and standard footprint - per Table 6 of the NXP datasheet. This value assumes free-air convection and is used to calculate maximum allowable power dissipation at elevated ambient temperatures. The BZX84-C5V1/LF1R uses this thermal profile to sustain 250 mW at Tamb ≤ 25 °C.
Does BZX84-C5V1/LF1R have a connected third pin?
No, Pin 2 of the BZX84-C5V1/LF1R is internally not connected (n.c.), as confirmed in Table 2 "Pinning" of the NXP datasheet. It must remain unconnected on the PCB layout. Only Pin 1 (anode) and Pin 3 (cathode) carry functional current. This structural detail ensures correct placement and avoids unintended shorts when routing the BZX84-C5V1/LF1R in SOT23 footprints.
What is the maximum non-repetitive peak reverse power for BZX84-C5V1/LF1R?
The BZX84-C5V1/LF1R supports a maximum non-repetitive peak reverse power (PZSM) of 40 W for pulse durations ≤100 μs, as specified in Table 5 "Limiting values". This rating applies under square-wave surge conditions with Tj = 25 °C prior to surge and is critical for transient voltage suppression in 12 V/24 V automotive systems. The BZX84-C5V1/LF1R leverages this capability to absorb ISO 7637-2 Pulse 1 and Pulse 2a energy without degradation.
BZX84-C5V1/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:
- ±5%
- 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-C5V1/LF1R FAQ
1.How can I place an order for BZX84-C5V1/LF1R through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84-C5V1/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-C5V1/LF1R reliable?
The price and inventory of BZX84-C5V1/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-C5V1/LF1R is usually 5 days.
3.What payment methods are accepted for BZX84-C5V1/LF1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-C5V1/LF1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84-C5V1/LF1R?
BZX84-C5V1/LF1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84-C5V1/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-C5V1/LF1R?
For technical support, including BZX84-C5V1/LF1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-C5V1/LF1R requirements.
6.How does Aetrix verify that BZX84-C5V1/LF1R is sourced from the original manufacturer or authorized distributors?
All BZX84-C5V1/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-C5V1/LF1R meets industry standards.
7.What is the process for return or replacement of BZX84-C5V1/LF1R?
All BZX84-C5V1/LF1R units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-C5V1/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-C5V1/LF1R part is unused and in its original packaging.
Return procedure for BZX84-C5V1/LF1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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