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NXP Semiconductors BZX84-C11/LF1VL
- Part No.:
- BZX84-C11/LF1VL
- Manufacturer:
- NXP Semiconductors
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84-C11/LF1VL.pdf
- Description:
- DIODE ZENER 11V 250MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:2,789
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Product details
Overview
BZX84-C11/LF1VL from NXP Semiconductors is a ±5 % tolerance Zener voltage regulator diode in SOT23 (TO-236AB) package, rated for 250 mW total power dissipation at 25 °C ambient, with nominal Zener voltage of 11 V and typical differential resistance of 50 Ω at 5 mA. It serves as a precision low-power reference or clamp in power supply feedback paths, sensor bias networks, and overvoltage protection circuits.
For engineers reviewing the BZX84-C11/LF1VL datasheet, BZX84-C11/LF1VL pinout, BZX84-C11/LF1VL application, or BZX84-C11/LF1VL equivalent, this page delivers verified specifications including Zener voltage tolerance (±5 %), thermal resistance (500 K/W junction-to-ambient), non-repetitive peak reverse power (40 W), AEC-Q101 qualification, and SOT23 pin configuration - all critical for automotive-grade voltage regulation design validation.
Technical Context
The BZX84-C11/LF1VL operates as a two-terminal silicon Zener diode optimized for stable reverse-bias breakdown at 11 V under DC or low-frequency transient conditions. Its ±5 % tolerance band, 50 Ω typical dynamic impedance at IZ = 5 mA, and −1.6 to +9.0 mV/K temperature coefficient enable predictable clamping across industrial temperature ranges.
Designed for surface-mount use on FR4 PCBs with standard SOT23 footprint, it supports reflow and wave soldering per JEDEC J-STD-020. The device features a cathode-anode configuration with Pin 1 = anode, Pin 2 = not connected, Pin 3 = cathode - confirmed by NXP's official pinning diagram and marking code Y1*.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 10.4 V to 11.6 V at IZ = 5 mA - defines clamping threshold range for overvoltage protection and reference stability |
| Tolerance | Approximately ±5 % - specifies allowable deviation from nominal 11 V, suitable for non-critical regulation tasks |
| Total Power Dissipation (Ptot) | 250 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling without derating |
| Differential Resistance (rdif) | 50 Ω typical at IZ = 5 mA - determines output impedance and regulation sensitivity to current variation |
| Non-repetitive Peak Reverse Power (PZSM) | 40 W for tp ≤ 100 μs - enables short-duration surge suppression in transient protection circuits |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA - defines conduction loss when used in forward-biased configurations |
| AEC-Q101 Qualified | Yes - confirms suitability for automotive electronics applications requiring stress-tested reliability |
Pinout & Package
Package: SOT23 (TO-236AB), plastic surface-mounted package with 3 leads; dimensions per Fig 8: 2.9 mm × 1.3 mm × 1.0 mm (L × W × H), standard footprint for automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Connects to lower-potential node in reverse-bias operation; required for forward conduction path |
| 2 | Not Connected (n.c.) | Internally unconnected terminal - must remain floating; no PCB trace or pad connection |
| 3 | Cathode (K) | Connects to higher-potential node in reverse-bias operation; primary current entry point during Zener breakdown |
Key Features
| Feature | Design Value |
|---|---|
| Low-Power Regulation | 250 mW rating enables compact placement in space-constrained PCB layouts without heatsinking |
| Automotive Qualification | AEC-Q101 compliance ensures reliability in engine control units, body electronics, and infotainment systems |
| SOT23 Standard Footprint | Compatible with industry-standard pick-and-place equipment and reflow profiles per JEDEC J-STD-020 |
| Three-Tolerance Series | Part of BZX84-C (±5 %) series - balances cost and accuracy for general-purpose voltage referencing |
| Marking Code | Y1* laser marking - enables rapid visual identification and traceability on assembled boards |
Applications
| Power Supply Feedback Clamping | Sensor Bias Reference |
|---|---|
Use Scenario: Stabilizing feedback voltage in adjustable DC-DC converter ICs (e.g., TL431-based regulators). IC Role / Device Role / Timing Role: Zener diode provides fixed reference voltage to comparator input, enabling precise output voltage setpoint. Use Value: 11 V nominal breakdown ensures compatibility with common 12 V rail systems while maintaining margin against ripple-induced false triggering. |
Use Scenario: Providing stable bias current to analog sensors (e.g., thermistors, RTDs) in automotive cabin temperature modules. IC Role / Device Role / Timing Role: Functions as a shunt reference to generate constant current source via series resistor. Use Value: ±5 % tolerance and 50 Ω dynamic impedance ensure repeatable sensor excitation within 1 % full-scale error budget. |
| Overvoltage Protection Clamp | ESD Transient Suppression |
Use Scenario: Protecting microcontroller I/O pins from accidental 12 V battery backfeed in automotive body control modules. IC Role / Device Role / Timing Role: Shunt limiter that conducts above 11.6 V to divert excess energy away from sensitive inputs. Use Value: 40 W non-repetitive peak power rating handles 100 μs load-dump transients per ISO 7637-2 Pulse 5a without failure. |
Use Scenario: Secondary-level ESD protection on CAN bus termination resistors in vehicle networking nodes. IC Role / Device Role / Timing Role: Fast-acting clamp activated during human-body-model (HBM) discharges to limit voltage overshoot. Use Value: Low 0.9 V forward voltage minimizes insertion loss in series protection paths while maintaining robust reverse breakdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5240BLT1G | 10 V nominal Zener voltage, ±5 % tolerance, 225 mW power rating, SOT23 package | Lower clamping voltage suits 5 V–9 V logic rail protection; slightly reduced power handling limits sustained surge duty | Select when 10 V reference is required and board layout allows minor voltage adjustment in feedback network |
| Vishay BZX84-C10-TP | 10 V nominal Zener voltage, ±5 % tolerance, 350 mW power rating, SOT23 package | Higher power rating supports longer-duration transients but requires verification of thermal performance on target PCB | Prefer for high-reliability industrial controls where extended surge immunity outweighs tighter voltage tolerance needs |
Compared with BZX84-C11/LF1VL, MMBZ5240BLT1G offers lower voltage and reduced power capacity, while BZX84-C10-TP provides higher power at a different nominal voltage - both require circuit-level recalibration of reference or clamp thresholds.
Availability
BZX84-C11/LF1VL is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and consumer power management systems requiring stable component supply and AEC-Q101-compliant Zener regulation.
Supply support for BZX84-C11/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 belongs to NXP's portfolio of discrete voltage regulation components, designed specifically for cost-effective, space-efficient Zener reference and protection functions in high-volume SMT applications.
FAQ
What is the exact Zener voltage range for BZX84-C11/LF1VL?
The BZX84-C11/LF1VL has a guaranteed Zener voltage range of 10.4 V to 11.6 V at test current IZ = 5 mA, reflecting its ±5 % tolerance specification. This range is validated per NXP's Product data sheet Rev. 6 (March 2014), Table 8, and applies under standard 25 °C junction temperature conditions. The BZX84-C11/LF1VL maintains this performance across its qualified operating temperature span.
Is BZX84-C11/LF1VL suitable for automotive applications?
Yes, BZX84-C11/LF1VL is AEC-Q101 qualified per Section 8.1 of the NXP datasheet, confirming its reliability for automotive use cases including engine control, lighting modules, and infotainment systems. The BZX84-C11/LF1VL undergoes stress testing for temperature cycling, humidity, and mechanical shock, meeting automotive-grade quality requirements without derating.
What does the marking code Y1* indicate on BZX84-C11/LF1VL?
The marking code Y1* on BZX84-C11/LF1VL identifies it as the 11 V variant within the BZX84-C (±5 %) series, per Table 4 of the NXP datasheet. The "Y1" prefix denotes the voltage grade, while "*" is a placeholder for the manufacturing site code. This marking enables field verification and traceability during PCB assembly and failure analysis of the BZX84-C11/LF1VL.
Can BZX84-C11/LF1VL replace a 12 V Zener diode in existing designs?
No - BZX84-C11/LF1VL is specified at 11 V nominal with 10.4–11.6 V range, making it unsuitable as a direct replacement for a true 12 V Zener (e.g., BZX84-C12). Substituting BZX84-C11/LF1VL would shift clamping or reference voltage downward by ~1 V, potentially violating system margin requirements. Always verify voltage alignment before interchanging Zener diodes like the BZX84-C11/LF1VL.
What is the thermal resistance of BZX84-C11/LF1VL and how does it affect PCB layout?
The BZX84-C11/LF1VL has a junction-to-ambient thermal resistance (Rth(j-a)) of 500 K/W when mounted on a standard FR4 PCB with single-sided copper and tin-plated finish. This high value means even modest power dissipation (e.g., 100 mW) raises junction temperature by ~50 °C above ambient - so PCB layout must avoid thermal isolation and consider copper pour area near Pin 3 (cathode) to improve heat spreading for the BZX84-C11/LF1VL.
BZX84-C11/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):
- 11 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 8 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-C11/LF1VL FAQ
1.How can I place an order for BZX84-C11/LF1VL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84-C11/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-C11/LF1VL reliable?
The price and inventory of BZX84-C11/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-C11/LF1VL is usually 5 days.
3.What payment methods are accepted for BZX84-C11/LF1VL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-C11/LF1VL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84-C11/LF1VL?
BZX84-C11/LF1VL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84-C11/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-C11/LF1VL?
For technical support, including BZX84-C11/LF1VL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-C11/LF1VL requirements.
6.How does Aetrix verify that BZX84-C11/LF1VL is sourced from the original manufacturer or authorized distributors?
All BZX84-C11/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-C11/LF1VL meets industry standards.
7.What is the process for return or replacement of BZX84-C11/LF1VL?
All BZX84-C11/LF1VL units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-C11/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-C11/LF1VL part is unused and in its original packaging.
Return procedure for BZX84-C11/LF1VL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84-C11/LF1VL Tags
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MMSZ5231B-7-F
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MM5Z5V1ST1G
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