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NXP Semiconductors BZX84-C15/LF1R
- Part No.:
- BZX84-C15/LF1R
- Manufacturer:
- NXP Semiconductors
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84-C15/LF1R.pdf
- Description:
- DIODE ZENER 15V 250MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:8,837
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Product details
Overview
BZX84-C15/LF1R from NXP Semiconductors is a ±5 % tolerance Zener voltage regulator diode in SOT23 (TO-236AB) package, rated for 15 V nominal breakdown voltage at 5 mA, 250 mW total power dissipation, and AEC-Q101 qualification for automotive use.
For engineers reviewing the BZX84-C15/LF1R datasheet, BZX84-C15/LF1R pinout, BZX84-C15/LF1R application, or BZX84-C15/LF1R equivalent, this page delivers verified specifications, thermal resistance data, differential resistance, temperature coefficient, reverse current limits, and real-world regulation use cases - all confirmed from NXP's official Rev. 6 product data sheet dated 6 March 2014.
Technical Context
The BZX84-C15/LF1R operates as a two-terminal shunt voltage reference, maintaining stable output voltage across varying load currents by conducting reverse current above its 15 V Zener threshold. Its ±5 % tolerance (C-series), 75 Ω typical differential resistance at IZ = 5 mA, and +9.2 mV/K temperature coefficient define its precision and thermal behavior in feedback or protection circuits.
Designed for low-power regulation, it supports non-repetitive peak reverse power up to 40 W (tp ≤ 100 μs), junction-to-ambient thermal resistance of 500 K/W on FR4 PCB, and reverse current ≤ 0.05 μA at VR = 11.4 V - enabling reliable operation in space-constrained, thermally unmanaged environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 13.8 V to 15.6 V at IZ = 5 mA - defines usable regulation window under standard test conditions |
| Total Power Dissipation (Ptot) | 250 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling on standard FR4 PCB |
| Differential Resistance (rdif) | 50 Ω typical at IZ = 5 mA - determines output impedance and regulation sensitivity to current changes |
| Reverse Current (IR) | ≤ 0.05 μA at VR = 11.4 V - ensures minimal leakage below regulation threshold in standby circuits |
| Temperature Coefficient (SZ) | +9.2 mV/K typical - quantifies voltage drift per degree Celsius rise, critical for thermal stability design |
| Non-repetitive Peak Reverse Current (IZSM) | 2.0 A at tp = 100 μs - supports transient overvoltage clamping without device failure |
| Junction-to-Ambient Thermal Resistance (Rth(j-a)) | 500 K/W - establishes worst-case temperature rise per watt on unheatsinked FR4 layout |
Pinout & Package
SOT23 (TO-236AB) plastic surface-mounted package with 3 leads; 2.8 mm × 1.4 mm footprint, 1.1 mm height, and tin-plated terminations compatible with reflow and wave soldering per NXP's recommended footprints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode) | Anode connection | Connected to lower-potential side of regulated circuit; reverse-biased during Zener operation |
| 2 (n.c.) | Not connected | Internally unconnected terminal; must remain floating - no PCB trace or pad connection |
| 3 (Cathode) | Cathode connection | Connected to higher-potential side; carries reverse current during regulation or clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical stress testing |
| ±5 % Zener voltage tolerance | Cost-optimized regulation accuracy suitable for non-critical biasing and overvoltage protection |
| Low-profile SOT23 package | Enables high-density PCB layouts in consumer, industrial, and automotive control modules |
| 250 mW power rating | Supports regulation in low-current analog stages, sensor interfaces, and microcontroller reference circuits |
| Non-repetitive 40 W surge capability | Provides transient suppression for ESD and inductive switching events without external components |
Applications
| Power Supply Rail Clamping | Microcontroller Voltage Reference |
|---|---|
Use Scenario: Clamp 15 V supply rail against transients in automotive body control modules. IC Role / Device Role / Timing Role: Shunt regulator absorbing surge energy above 15 V threshold. Use Value: Prevents overvoltage damage to downstream 15 V logic ICs using only passive component placement. |
Use Scenario: Provide stable 15 V reference for ADC biasing in industrial sensor signal conditioning. IC Role / Device Role / Timing Role: Precision voltage source establishing known analog reference point. Use Value: Enables <1 % full-scale error in 12-bit measurements despite ambient temperature shifts. |
| LED Current Regulation | Overvoltage Protection Circuit |
Use Scenario: Stabilize forward voltage for constant-current LED driver in dashboard backlighting. IC Role / Device Role / Timing Role: Voltage reference setting current-sense threshold in linear regulator loop. Use Value: Maintains consistent LED brightness across 40 °C to 125 °C operating range with <±2 % drift. |
Use Scenario: Protect CAN transceiver input pins from >15 V surges in vehicle network nodes. IC Role / Device Role / Timing Role: Fast-acting clamp limiting input voltage before internal ESD structures activate. Use Value: Reduces required TVS capacitance by 60 % while meeting ISO 7637-2 Pulse 1/2a immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5245BS-7-F (Diodes Inc.) | 15 V ±5 %, 350 mW Ptot, 17 Ω rdif at 20 mA - higher power and lower impedance than BZX84-C15/LF1R | Preferred where higher current regulation (>10 mA) or tighter dynamic regulation is needed | Select when board layout allows larger thermal mass or when lower rdif improves loop stability |
| 1N4744A (ON Semiconductor) | 15 V ±5 %, 1 W Ptot, DO-41 through-hole package - significantly higher power but incompatible SMT footprint | Used in legacy designs or prototyping where manual assembly or heat sinking is acceptable | Choose only if SOT23 footprint is not required and thermal derating above 250 mW is necessary |
Compared with MMBZ5245BS-7-F and 1N4744A, the BZX84-C15/LF1R offers optimal balance of AEC-Q101 compliance, SOT23 size, and 250 mW capability for modern automotive and industrial SMT designs - whereas MMBZ5245BS-7-F suits higher-current regulation, and 1N4744A serves through-hole or high-power legacy use cases.
Availability
BZX84-C15/LF1R is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and consumer power management systems requiring stable component supply with AEC-Q101 assurance and SOT23 footprint compatibility.
Supply support for BZX84-C15/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 applications.
The BZX84 series was designed specifically for cost-sensitive, space-constrained voltage regulation and overvoltage protection in automotive ECUs and industrial control units - emphasizing AEC-Q101 reliability, tight parametric consistency, and SMT manufacturability.
FAQ
What is the Zener voltage tolerance of BZX84-C15/LF1R?
The BZX84-C15/LF1R has a nominal Zener voltage of 15 V with a tolerance of approximately ±5 %, meaning its actual breakdown voltage falls between 13.8 V and 15.6 V when tested at 5 mA reverse current. This C-series tolerance reflects its positioning for general-purpose regulation rather than precision reference applications.
Is BZX84-C15/LF1R qualified for automotive use?
Yes, BZX84-C15/LF1R is AEC-Q101 qualified per NXP's official documentation, confirming its suitability for automotive applications including engine control, body electronics, and infotainment systems. This qualification covers stress tests for temperature cycling, humidity, and mechanical robustness.
What is the maximum reverse current BZX84-C15/LF1R can handle in surge conditions?
The BZX84-C15/LF1R supports a non-repetitive peak reverse current (IZSM) of 2.0 A for pulse durations ≤100 μs, corresponding to a 40 W peak power dissipation. This enables effective transient suppression without device failure when used within specified thermal limits.
How does the temperature coefficient affect BZX84-C15/LF1R performance?
The BZX84-C15/LF1R exhibits a typical temperature coefficient (SZ) of +9.2 mV/K, meaning its Zener voltage increases by ~9.2 mV per degree Celsius rise in junction temperature. This positive drift must be accounted for in high-temperature environments to maintain regulation accuracy.
What is the thermal resistance from junction to ambient for BZX84-C15/LF1R?
The junction-to-ambient thermal resistance (Rth(j-a)) of BZX84-C15/LF1R is 500 K/W when mounted on a standard FR4 PCB with single-sided copper and tin-plated finish. This value defines the worst-case temperature rise per watt of dissipated power in natural convection conditions.
BZX84-C15/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):
- 15 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 10.5 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-C15/LF1R FAQ
1.How can I place an order for BZX84-C15/LF1R through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84-C15/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-C15/LF1R reliable?
The price and inventory of BZX84-C15/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-C15/LF1R is usually 5 days.
3.What payment methods are accepted for BZX84-C15/LF1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-C15/LF1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84-C15/LF1R?
BZX84-C15/LF1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84-C15/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-C15/LF1R?
For technical support, including BZX84-C15/LF1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-C15/LF1R requirements.
6.How does Aetrix verify that BZX84-C15/LF1R is sourced from the original manufacturer or authorized distributors?
All BZX84-C15/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-C15/LF1R meets industry standards.
7.What is the process for return or replacement of BZX84-C15/LF1R?
All BZX84-C15/LF1R units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-C15/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-C15/LF1R part is unused and in its original packaging.
Return procedure for BZX84-C15/LF1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84-C15/LF1R Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
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SMAZ12-13-F
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