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NXP Semiconductors BZX84-C75/LF1VL
- Part No.:
- BZX84-C75/LF1VL
- Manufacturer:
- NXP Semiconductors
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84-C75/LF1VL.pdf
- Description:
- DIODE ZENER 75V 250MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:5,925
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Product details
Overview
BZX84-C75/LF1VL from NXP Semiconductors is a ±5 % tolerance Zener voltage regulator diode in SOT23 (TO-236AB) package, rated for 75 V nominal breakdown voltage at 2 mA, 250 mW total power dissipation, and AEC-Q101 qualified for automotive use. It provides stable reference voltage in low-power supply regulation and overvoltage protection circuits.
For engineers reviewing the BZX84-C75/LF1VL datasheet, BZX84-C75/LF1VL pinout, BZX84-C75/LF1VL application, or BZX84-C75/LF1VL equivalent, key selection factors include its 70–79 V breakdown range, 170–500 Ω differential resistance at 2 mA, 95 μA reverse current at 52.5 V, +0.05 mV/K temperature coefficient, and suitability for space-constrained PCBs requiring automotive-grade reliability.
Technical Context
This Zener diode operates in reverse-bias breakdown mode to maintain a stable reference voltage across its cathode-anode terminals. Its performance is specified at Tj = 25 °C with defined test currents (IZ = 2 mA), and it exhibits a positive temperature coefficient of +0.05 mV/K - indicating slight voltage increase with junction temperature rise.
The device supports non-repetitive peak reverse power dissipation up to 40 W (tp ≤ 100 μs), and thermal resistance from junction to ambient is 500 K/W on FR4 PCB. It is not intended for continuous high-current regulation but for precision clamping, voltage referencing, and transient suppression in low-power analog and digital subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VZ) | 70 V min to 79 V max at IZ = 2 mA - defines usable clamping window for 75 V nominal design |
| Total Power Dissipation (Ptot) | 250 mW at Tamb ≤ 25 °C - limits continuous DC power handling on standard FR4 PCB |
| Differential Resistance (rdif) | 170 Ω typ to 500 Ω max at IZ = 2 mA - determines regulation stiffness under load variation |
| Reverse Current (IR) | 95 μA max at VR = 52.5 V - specifies leakage level below breakdown, critical for low-power standby circuits |
| Temperature Coefficient (SZ) | +0.05 mV/K - indicates minimal positive drift, enabling stable reference in moderate-temperature environments |
| Non-repetitive Peak Reverse Current (IZSM) | 0.20 A max at tp = 100 μs - supports short-duration surge suppression without damage |
| AEC-Q101 Qualified | Validated for automotive applications per stress-test qualification - ensures reliability in vehicle ECUs and infotainment systems |
Pinout & Package
SOT23 (TO-236AB) plastic surface-mounted package with 3 leads; dimensions: 2.9 × 1.3 × 1.0 mm (L × W × H); standard footprint per Fig 9/10; anode (Pin 1), no-connect (Pin 2), cathode (Pin 3).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Connected to lower-potential side of regulated node; reverse-bias current enters here during clamping |
| 2 | Not Connected (n.c.) | Internal die bond wire stub; electrically isolated - must remain unconnected on PCB |
| 3 | Cathode (K) | Connected to higher-potential side; voltage reference output is measured between Pin 3 and Pin 1 |
Key Features
| Feature | Design Value |
|---|---|
| ±5 % Zener tolerance (BZX84-C series) | Enables cost-optimized voltage referencing where tight regulation is not required, e.g., power-rail supervision |
| AEC-Q101 qualification | Confirms robustness against automotive environmental stresses - vibration, thermal cycling, humidity - without derating |
| 250 mW power rating in SOT23 | Supports compact board layout while delivering sufficient clamping energy for low-duty-cycle transients |
| Non-repetitive 40 W peak power capability | Allows safe absorption of ESD or inductive-switching spikes without failure, provided pulse duration ≤100 μs |
| Low 95 μA leakage at 52.5 V | Minimizes quiescent current draw in battery-powered systems operating near the Zener knee |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Clamping 12 V supply rail against load-dump transients in door module microcontroller power domain. IC Role / Device Role / Timing Role: Zener shunt regulator providing overvoltage protection and reference stabilization for LDO input stage. Use Value: Limits voltage excursion to ≤79 V during ISO 7637-2 Pulse 5a events, preventing downstream IC damage without external TVS. |
Use Scenario: Establishing precise 75 V reference for 4–20 mA transmitter loop-powered sensor calibration. IC Role / Device Role / Timing Role: Passive voltage reference element in two-resistor divider network feeding ADC reference input. Use Value: Delivers stable 75 V point with <±5 % initial accuracy and +0.05 mV/K drift, enabling <0.1 % full-scale error over 0–70 °C. |
| Consumer Power Adapter Feedback | Medical Diagnostic Equipment Bias Supply |
Use Scenario: Secondary-side voltage sensing in flyback converter feedback path for USB-C PD adapter. IC Role / Device Role / Timing Role: Zener-based optocoupler bias reference setting regulation threshold for TL431 replacement. Use Value: Provides predictable 75 V clamp with 170–500 Ω dynamic impedance, ensuring consistent feedback gain across production lots. |
Use Scenario: Generating isolated high-voltage bias for photomultiplier tube (PMT) anode chain in portable X-ray detector. IC Role / Device Role / Timing Role: Precision shunt reference defining 75 V node in resistive ladder network. Use Value: Low 95 μA leakage at 52.5 V minimizes current error in high-impedance bias string, preserving signal-to-noise ratio. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5265BLT1G | 75 V nominal, ±5 %, 225 mW Ptot, SOT23, 100 Ω rdif typ at 20 mA - higher test current, lower dynamic impedance | Optimized for higher-current regulation; less suitable for low-leakage, low-IZ bias networks | Select when tighter dynamic regulation is needed at >5 mA, and AEC-Q101 is not required |
| Vishay BZX84-C75-TP | 75 V nominal, ±5 %, 300 mW Ptot, SOT23, AEC-Q101 qualified, 200 Ω rdif typ at 2 mA - higher power rating, identical test conditions | Supports higher continuous dissipation in thermally constrained layouts | Choose when board-level thermal management limits junction temperature rise under sustained 250+ mW loads |
Compared with BZX84-C75/LF1VL, MMBZ5265BLT1G offers lower dynamic impedance but lacks automotive qualification and uses different test current, while BZX84-C75-TP provides 20 % higher power rating with identical Zener characteristics and qualification - making it a drop-in upgrade for thermally demanding automotive designs.
Availability
BZX84-C75/LF1VL is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor signal conditioning, consumer power adapter feedback circuits, and medical diagnostic equipment bias supplies requiring stable component supply with AEC-Q101 assurance.
Supply support for BZX84-C75/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 applications.
The BZX84 series was designed as a family of standardized, AEC-Q101-qualified Zener diodes targeting cost-sensitive, space-constrained voltage regulation and protection functions in automotive and industrial electronics.
FAQ
What is the exact breakdown voltage range for BZX84-C75/LF1VL?
The BZX84-C75/LF1VL has a guaranteed breakdown voltage range of 70 V minimum to 79 V maximum when tested at IZ = 2 mA and Tj = 25 °C, reflecting its ±5 % tolerance grade within the BZX84-C series. This range is confirmed in Table 9 of the NXP datasheet Rev. 6.
Is BZX84-C75/LF1VL suitable for automotive applications?
Yes, BZX84-C75/LF1VL is AEC-Q101 qualified per Section 8.1 of the NXP datasheet, meaning it has passed stress tests for temperature cycling, humidity, mechanical shock, and ESD required for automotive electronic control units. Its qualification applies directly to this part number, not just the BZX84 series generically.
What is the maximum reverse current specification for BZX84-C75/LF1VL?
The BZX84-C75/LF1VL specifies a maximum reverse current (IR) of 95 μA at VR = 52.5 V, as listed in Table 9 under "Reverse current IR (μA)" for IZ = 2 mA condition. This value is critical for estimating leakage in low-power bias networks.
Does BZX84-C75/LF1VL have a no-connect pin, and how should it be handled on PCB?
Yes, BZX84-C75/LF1VL has Pin 2 marked "n.c." (not connected) per Table 2 in the datasheet. This terminal is internally unconnected and must remain unattached on the PCB layout - no trace, pad, or solder mask opening should interface with it to avoid parasitic coupling or assembly defects.
What is the thermal resistance from junction to ambient for BZX84-C75/LF1VL?
The thermal resistance from junction to ambient (Rth(j-a)) for BZX84-C75/LF1VL is 500 K/W when mounted on a FR4 PCB with single-sided copper, tin-plated, and standard footprint per Table 6. This value assumes free-air convection and defines worst-case junction temperature rise under DC load.
BZX84-C75/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):
- 75 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 255 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 52.5 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-C75/LF1VL FAQ
1.How can I place an order for BZX84-C75/LF1VL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84-C75/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-C75/LF1VL reliable?
The price and inventory of BZX84-C75/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-C75/LF1VL is usually 5 days.
3.What payment methods are accepted for BZX84-C75/LF1VL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-C75/LF1VL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84-C75/LF1VL?
BZX84-C75/LF1VL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84-C75/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-C75/LF1VL?
For technical support, including BZX84-C75/LF1VL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-C75/LF1VL requirements.
6.How does Aetrix verify that BZX84-C75/LF1VL is sourced from the original manufacturer or authorized distributors?
All BZX84-C75/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-C75/LF1VL meets industry standards.
7.What is the process for return or replacement of BZX84-C75/LF1VL?
All BZX84-C75/LF1VL units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-C75/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-C75/LF1VL part is unused and in its original packaging.
Return procedure for BZX84-C75/LF1VL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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