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NXP Semiconductors BZX84-C3V3/LF1VL
- Part No.:
- BZX84-C3V3/LF1VL
- Manufacturer:
- NXP Semiconductors
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84-C3V3/LF1VL.pdf
- Description:
- DIODE ZENER 3.3V 250MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:5,752
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Product details
Overview
BZX84-C3V3/LF1VL from NXP Semiconductors is a ±5 % tolerance Zener voltage regulator diode in SOT23 (TO-236AB) package, rated for 3.3 V nominal breakdown voltage at 5 mA, 250 mW total power dissipation, and AEC-Q101 qualification for automotive use.
For engineers reviewing the BZX84-C3V3/LF1VL datasheet, BZX84-C3V3/LF1VL pinout, BZX84-C3V3/LF1VL application, or BZX84-C3V3/LF1VL equivalent, this page delivers verified specifications, validated pin functions, confirmed automotive-grade thermal and surge performance, and real-world regulation use cases - all aligned to NXP's Rev. 6 product data sheet dated 6 March 2014.
Technical Context
This device operates as a passive voltage reference in reverse-biased mode, with a typical Zener voltage of 3.3 V (min 3.1 V, max 3.5 V) at IZ = 5 mA and differential resistance of 350 Ω (typical). It exhibits a negative temperature coefficient of −2.4 mV/K, enabling predictable drift compensation in stable bias networks.
Designed for low-power regulation, it supports non-repetitive peak reverse power dissipation up to 40 W (tp ≤ 100 μs), forward voltage ≤ 0.9 V at IF = 10 mA, and reverse current ≤ 5 μA at VR = 1 V - all specified under Tj = 25 °C with FR4 PCB mounting per standard footprint.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.3 V nominal at IZ = 5 mA; min 3.1 V / max 3.5 V defines ±5 % tolerance band for precision reference design |
| Total Power Dissipation (Ptot) | 250 mW at Tamb ≤ 25 °C; sets maximum continuous DC power handling on standard FR4 PCB |
| Differential Resistance (rdif) | 350 Ω typical at IZ = 5 mA; determines output impedance and load regulation sensitivity |
| Reverse Current (IR) | ≤5 μA at VR = 1 V; ensures low leakage in standby or high-impedance bias circuits |
| Non-repetitive Peak Reverse Power | 40 W for tp ≤ 100 μs; enables transient overvoltage clamping without permanent damage |
| Temperature Coefficient (SZ) | −2.4 mV/K typical; quantifies voltage drift per degree Celsius for thermal stability analysis |
| Forward Voltage (VF) | ≤0.9 V at IF = 10 mA; defines conduction loss when used in forward-biased protection paths |
Pinout & 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 (reflow/wave soldering).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode) | Anode connection | Connected to lower-potential node in reverse-bias regulation; carries forward current during fault conditions |
| 2 (n.c.) | Not connected | Internally unconnected terminal; must remain floating - no PCB trace or component attachment |
| 3 (Cathode) | Cathode connection | Connected to higher-potential node; serves as regulated output reference point in Zener configuration |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and body electronics requiring reliability under thermal cycling and vibration |
| ±5 % Zener tolerance (BZX84-C series) | Enables cost-optimized voltage reference selection where tight regulation is not required, e.g., power supply feedback thresholds |
| 250 mW power rating in SOT23 | Supports compact board layouts while delivering sufficient headroom for 3.3 V rail stabilization in microcontroller peripherals |
| Low 5 μA reverse leakage at 1 V | Minimizes quiescent current draw in battery-powered systems and enables use in high-impedance sensing nodes |
| 40 W non-repetitive surge capability | Provides robust ESD and transient suppression in I/O line protection without external TVS devices |
Applications
| Power Supply Feedback | Microcontroller Reset Circuit |
|---|---|
|
Use Scenario: Stabilizing feedback voltage in adjustable LDO or switching regulator ICs operating at 3.3 V output. IC Role / Device Role / Timing Role: Zener reference providing precise 3.3 V threshold to error amplifier input. Use Value: Maintains ±5 % output accuracy across temperature and load, leveraging −2.4 mV/K coefficient for predictable drift behavior. |
Use Scenario: Generating clean reset signal for ARM Cortex-M0+ microcontrollers during brown-out conditions. IC Role / Device Role / Timing Role: Voltage monitor establishing 3.3 V reset threshold with low leakage (<5 μA) to avoid battery drain. Use Value: Ensures reliable reset assertion below 3.1 V while consuming negligible current in active-low reset path. |
| Automotive Sensor Biasing | I/O Line Transient Protection |
|
Use Scenario: Providing stable bias voltage to analog pressure or temperature sensors in engine bay modules. IC Role / Device Role / Timing Role: Low-drift reference source compensating for ambient temperature swings up to +125 °C. Use Value: Delivers consistent sensor excitation using AEC-Q101-qualified construction and −2.4 mV/K TC matching common sensor offsets. |
Use Scenario: Clamping induced transients on CAN or LIN bus lines exposed to load dump or ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Fast-response shunt element absorbing 40 W surges (tp ≤ 100 μs) without failure. Use Value: Replaces discrete TVS in space-constrained ECUs by combining regulation and surge suppression in one SOT23 device. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5226BS-7-F (Diodes Inc.) | 3.3 V, ±5 %, 350 mW, SOT23; VF = 0.9 V @ 10 mA; IR = 5 μA @ 1 V - matches BZX84-C3V3/LF1VL electrical specs closely | Not AEC-Q101 qualified; suitable for industrial/commercial but not automotive deployment | Select when automotive qualification is unnecessary and second-source availability is prioritized |
| BZX84-C3V3-7-F (Diodes Inc.) | Identical 3.3 V ±5 % spec, 250 mW, SOT23; AEC-Q101 qualified; IR = 5 μA @ 1 V; rdif = 350 Ω @ 5 mA - functionally equivalent | Same marking code *B1 and identical thermal/surge ratings; validated for same automotive use cases | Preferred drop-in alternative with identical form, fit, and function - ideal for dual-sourcing in Tier-1 supply chains |
Compared with MMBZ5226BS-7-F and BZX84-C3V3-7-F, the BZX84-C3V3/LF1VL offers identical Zener performance and AEC-Q101 compliance, but differs in packaging variant (LF1VL denotes specific tape/reel and moisture sensitivity level per NXP internal coding), making BZX84-C3V3-7-F the most seamless replacement for production continuity.
Availability
BZX84-C3V3/LF1VL is available at Aetrix Electronics and suitable for automotive control modules, industrial sensor interfaces, and consumer power management systems requiring stable component supply and long-term lifecycle support.
Supply support for BZX84-C3V3/LF1VL 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 portfolio of general-purpose Zener regulators designed specifically for cost-sensitive, space-constrained applications requiring AEC-Q101 reliability - especially in automotive body electronics and power management subsystems.
FAQ
What is the Zener voltage tolerance of BZX84-C3V3/LF1VL?
The BZX84-C3V3/LF1VL has a nominal Zener voltage of 3.3 V with a tolerance of approximately ±5 %, meaning the actual breakdown voltage falls between 3.1 V and 3.5 V when tested at IZ = 5 mA and Tj = 25 °C. This tolerance is defined by the "C" suffix in the BZX84 series nomenclature and is confirmed in Table 8 of the NXP datasheet Rev. 6.
Is BZX84-C3V3/LF1VL qualified for automotive applications?
Yes, BZX84-C3V3/LF1VL is AEC-Q101 qualified per Section 8.1 of the NXP datasheet, confirming its suitability for automotive environments including under-hood and cabin modules. This qualification covers stress testing for temperature cycling, humidity, mechanical shock, and ESD - critical for use in engine control units and ADAS sensor interfaces.
What is the maximum non-repetitive peak reverse power dissipation for BZX84-C3V3/LF1VL?
The BZX84-C3V3/LF1VL supports a non-repetitive peak reverse power dissipation of 40 W under pulse conditions of tp ≤ 100 μs and duty cycle δ ≤ 0.02, as specified in Table 5 (Limiting Values) and Fig 1 of the NXP datasheet. This rating applies at Tj = 25 °C before surge and enables transient suppression in I/O protection circuits.
What does the "LF1VL" suffix indicate in BZX84-C3V3/LF1VL?
The "LF1VL" suffix denotes NXP's internal packaging and handling specification: "LF" indicates lead-free finish, "1" specifies tape-and-reel packing with 3000 units per reel, and "VL" refers to moisture sensitivity level (MSL) 1 - meaning unlimited floor life at ≤30 °C/60 % RH. This is distinct from generic SOT23 variants and ensures compatibility with standard reflow profiles.
Can BZX84-C3V3/LF1VL be used in forward-bias applications?
Yes, BZX84-C3V3/LF1VL can conduct in forward bias with VF ≤ 0.9 V at IF = 10 mA (Table 1), making it usable in polarity protection or LED current-limiting roles. However, its primary design intent is reverse-bias regulation, and forward operation is limited to ≤200 mA (IF max per Table 5) - always verify thermal derating on target PCB layout.
BZX84-C3V3/LF1VL 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):
- 3.3 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1 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-C3V3/LF1VL FAQ
1.How can I place an order for BZX84-C3V3/LF1VL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84-C3V3/LF1VL 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-C3V3/LF1VL reliable?
The price and inventory of BZX84-C3V3/LF1VL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84-C3V3/LF1VL is usually 5 days.
3.What payment methods are accepted for BZX84-C3V3/LF1VL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-C3V3/LF1VL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84-C3V3/LF1VL?
BZX84-C3V3/LF1VL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84-C3V3/LF1VL 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-C3V3/LF1VL?
For technical support, including BZX84-C3V3/LF1VL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-C3V3/LF1VL requirements.
6.How does Aetrix verify that BZX84-C3V3/LF1VL is sourced from the original manufacturer or authorized distributors?
All BZX84-C3V3/LF1VL 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-C3V3/LF1VL meets industry standards.
7.What is the process for return or replacement of BZX84-C3V3/LF1VL?
All BZX84-C3V3/LF1VL units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-C3V3/LF1VL, 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-C3V3/LF1VL part is unused and in its original packaging.
Return procedure for BZX84-C3V3/LF1VL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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