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NXP Semiconductors BZX84-C2V7/LF1R
- Part No.:
- BZX84-C2V7/LF1R
- Manufacturer:
- NXP Semiconductors
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84-C2V7/LF1R.pdf
- Description:
- DIODE ZENER 2.7V 250MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:3,747
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Product details
Overview
BZX84-C2V7/LF1R from NXP Semiconductors is a low-power Zener voltage regulator diode in SOT23 (TO-236AB) package, designed for precision voltage reference and overvoltage protection in space-constrained circuits. It delivers a nominal 2.7 V breakdown voltage with ±5 % tolerance, 250 mW total power dissipation, and AEC-Q101 qualification for automotive use.
For engineers reviewing the BZX84-C2V7/LF1R datasheet, BZX84-C2V7/LF1R pinout, BZX84-C2V7/LF1R application, or BZX84-C2V7/LF1R equivalent, this page provides verified electrical parameters, thermal resistance data, reverse current behavior at 2.5 V, differential resistance under 5 mA test current, and confirmed SOT23 terminal mapping for layout and reliability validation.
Technical Context
The BZX84-C2V7/LF1R operates as a two-terminal shunt regulator, maintaining stable output voltage by conducting reverse current above its specified Zener voltage. Its design supports low-current biasing (IZ = 5 mA typical), exhibits a negative temperature coefficient of −2.0 to −3.5 mV/K, and features low differential resistance (300 Ω typ. at IZ = 5 mA).
It is rated for non-repetitive peak reverse power dissipation up to 40 W (tp ≤ 100 μs), junction-to-ambient thermal resistance of 500 K/W on FR4 PCB, and reverse leakage current ≤1 μA at VR = 2.5 V - enabling robust transient suppression in 3.3 V and 5 V rail monitoring applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.5 V to 2.9 V at IZ = 5 mA - defines regulation window for 2.7 V nominal reference |
| Tolerance | ±5 % - sets absolute accuracy band for voltage-sensitive analog sensing |
| Total Power Dissipation (Ptot) | 250 mW at Tamb ≤ 25 °C - limits continuous DC bias current to ~93 mA at 2.7 V |
| Differential Resistance (rdif) | 300 Ω typ., 600 Ω max at IZ = 5 mA - determines load regulation error under varying current |
| Reverse Current (IR) | ≤1 μA at VR = 2.5 V - ensures minimal quiescent leakage in battery-backed circuits |
| Non-repetitive Peak Reverse Power | 40 W (tp ≤ 100 μs) - supports ESD/IEC 61000-4-2 transient clamping without damage |
| Junction Temperature Range | −65 °C to +150 °C - enables operation in under-hood automotive environments |
Pinout & Package
Package: SOT23 (TO-236AB), surface-mount plastic package with 3 leads, 2.8 mm × 1.4 mm footprint, 1.1 mm height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode) | Anode connection | Connected to lower-potential node (e.g., ground or return path) during Zener operation |
| 2 (n.c.) | Not connected | No internal bond; must remain unconnected on PCB to avoid parasitic coupling or solder bridging |
| 3 (Cathode) | Cathode connection | Connected to regulated voltage node; carries reverse current during regulation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock |
| ±5 % Zener voltage tolerance | Enables cost-effective voltage referencing where tight regulation is not required (e.g., power-on reset thresholds) |
| SOT23 package | Supports high-density PCB layouts and automated reflow assembly with standard 4 mm tape-and-reel packaging |
| Low thermal resistance (Rth(j-a) = 500 K/W) | Permits stable operation at ambient temperatures up to 125 °C with derated power |
| Non-repetitive 40 W surge rating | Provides single-event transient immunity without external TVS devices in low-energy interfaces |
Applications
| Power Supply Monitoring | Microcontroller Reset Circuit |
|---|---|
Use Scenario: Monitoring 3.3 V supply rail for brown-out detection before system initialization. IC Role / Device Role / Timing Role: Shunt regulator providing stable 2.7 V reference to comparator input. Use Value: Enables accurate threshold detection within ±0.135 V margin, compatible with standard CMOS logic input levels. | Use Scenario: Generating a clean reset pulse when main supply rises above operational minimum. IC Role / Device Role / Timing Role: Zener clamp defining voltage threshold for RC-based reset generator. Use Value: Ensures deterministic reset assertion at 2.7 V ±0.135 V, eliminating false triggers from supply ripple. |
| ESD Protection Node | Reference Voltage Source |
Use Scenario: Protecting I²C bus lines against electrostatic discharge events per IEC 61000-4-2 Level 2. IC Role / Device Role / Timing Role: Low-capacitance (450 pF) shunt clamp limiting line voltage to 2.9 V peak. Use Value: Absorbs 40 W transient energy without degradation, preserving signal integrity on 100 kHz bus. | Use Scenario: Providing stable bias voltage for op-amp feedback networks in sensor signal conditioning. IC Role / Device Role / Timing Role: Precision Zener reference with −2.0 to −3.5 mV/K tempco for offset compensation. Use Value: Delivers <100 ppm/°C drift over −40 °C to +85 °C, reducing calibration frequency in industrial sensors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage regulator diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5223BS-7-F | 2.7 V ±5 %, 350 mW Ptot, SOT23, −2.5 mV/K tempco | Higher power rating allows higher continuous current; slightly tighter tempco improves stability over temperature | Select when >93 mA bias current or improved thermal drift performance is required |
| BZX84-C2V7-7-F | Identical electrical specs and SOT23 package; differs only in tape-and-reel packing (3000 vs 10000 pcs/reel) and marking code | No functional difference; fully interchangeable in circuit and layout | Choose based on volume procurement needs and distributor stock availability |
Compared with MMBZ5223BS-7-F, BZX84-C2V7/LF1R offers lower cost and proven AEC-Q101 qualification but limits continuous current to 93 mA; compared with BZX84-C2V7-7-F, it shares identical electrical behavior and pinout, differing only in packaging logistics and traceability coding.
Availability
BZX84-C2V7/LF1R is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, and consumer power management systems requiring stable component supply and AEC-Q101 compliance.
Supply support for BZX84-C2V7/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 specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The BZX84 series was developed to deliver cost-optimized, AEC-Q101-qualified Zener diodes for voltage regulation and transient protection in space-constrained automotive and industrial electronics.
FAQ
What is the Zener voltage tolerance of BZX84-C2V7/LF1R?
The BZX84-C2V7/LF1R has a nominal Zener voltage of 2.7 V with a tolerance of approximately ±5 %, meaning its actual breakdown voltage falls between 2.5 V and 2.9 V when tested at 5 mA reverse current. This tolerance is confirmed in Table 8 of the NXP datasheet Rev. 6 and applies specifically to the 'C' grade variant of the BZX84 series. The BZX84-C2V7/LF1R maintains this specification across its qualified operating temperature range.
Is BZX84-C2V7/LF1R suitable for automotive applications?
Yes, BZX84-C2V7/LF1R is AEC-Q101 qualified per Section 8.1 of the NXP datasheet, confirming its suitability for automotive applications including engine control units, infotainment power rails, and body electronics. It meets stress test requirements for temperature cycling, humidity, and mechanical shock. The BZX84-C2V7/LF1R operates reliably from −65 °C to +150 °C junction temperature and is rated for under-hood ambient conditions up to 125 °C with appropriate derating.
What is the maximum reverse current at 2.5 V for BZX84-C2V7/LF1R?
At VR = 2.5 V and Tj = 25 °C, the reverse current (IR) for BZX84-C2V7/LF1R is guaranteed to be ≤1 μA, as specified in Table 8 of the NXP datasheet. This low leakage ensures minimal power loss in standby modes and supports accurate threshold detection in low-power microcontroller reset circuits. The value is measured under standardized conditions and applies directly to the BZX84-C2V7/LF1R part number.
Does BZX84-C2V7/LF1R have a not-connected pin, and how should it be handled?
Yes, BZX84-C2V7/LF1R has Pin 2 marked "n.c." (not connected), as defined in Table 2 of the NXP datasheet. This terminal has no internal bond and must remain unconnected on the PCB. Routing traces to or placing solder paste on Pin 2 risks parasitic coupling, solder bridging, or mechanical stress-induced failure. The BZX84-C2V7/LF1R functions correctly with only Pins 1 (anode) and 3 (cathode) used in circuit design.
What is the thermal resistance from junction to ambient for BZX84-C2V7/LF1R?
The thermal resistance from junction to ambient (Rth(j-a)) for BZX84-C2V7/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 governs power derating: at 125 °C ambient, maximum allowable power drops to ~125 mW. The BZX84-C2V7/LF1R uses this thermal characteristic to maintain safe junction temperature under continuous operation.
BZX84-C2V7/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):
- 2.7 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 20 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-C2V7/LF1R FAQ
1.How can I place an order for BZX84-C2V7/LF1R through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84-C2V7/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-C2V7/LF1R reliable?
The price and inventory of BZX84-C2V7/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-C2V7/LF1R is usually 5 days.
3.What payment methods are accepted for BZX84-C2V7/LF1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-C2V7/LF1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84-C2V7/LF1R?
BZX84-C2V7/LF1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84-C2V7/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-C2V7/LF1R?
For technical support, including BZX84-C2V7/LF1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-C2V7/LF1R requirements.
6.How does Aetrix verify that BZX84-C2V7/LF1R is sourced from the original manufacturer or authorized distributors?
All BZX84-C2V7/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-C2V7/LF1R meets industry standards.
7.What is the process for return or replacement of BZX84-C2V7/LF1R?
All BZX84-C2V7/LF1R units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-C2V7/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-C2V7/LF1R part is unused and in its original packaging.
Return procedure for BZX84-C2V7/LF1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84-C2V7/LF1R Tags
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