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NXP Semiconductors BZX84-C36/LF1R
- Part No.:
- BZX84-C36/LF1R
- Manufacturer:
- NXP Semiconductors
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84-C36/LF1R.pdf
- Description:
- DIODE ZENER 36V 250MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:2,028
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Product details
Overview
BZX84-C36/LF1R from NXP Semiconductors is a ±5 % tolerance Zener voltage regulator diode in SOT23 (TO-236AB) package, rated for 36 V nominal breakdown voltage at 2 mA, 250 mW total power dissipation, and AEC-Q101 qualified for automotive use.
For engineers reviewing the BZX84-C36/LF1R datasheet, BZX84-C36/LF1R pinout, BZX84-C36/LF1R application, or BZX84-C36/LF1R equivalent, this page delivers verified specifications, validated SOT23 terminal mapping, confirmed automotive-grade reliability data, and direct alternative part comparisons for voltage reference design and overvoltage protection circuits.
Technical Context
The BZX84-C36/LF1R operates as a passive two-terminal shunt regulator, maintaining stable reverse-biased voltage across its cathode-anode terminals under controlled current conditions. Its Zener breakdown mechanism provides predictable regulation with 36 V nominal VZ, 80 Ω typical differential resistance at IZ = 2 mA, and −1.2 mV/K temperature coefficient.
Designed for low-power signal-level regulation, it supports non-repetitive peak reverse currents up to 0.8 A (100 µs pulse), exhibits ≤100 nA reverse leakage at 28.8 V, and achieves thermal resistance of 500 K/W junction-to-ambient on FR4 PCB - all within −65 °C to +150 °C operating junction range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VZ Nominal | 36 V at IZ = 2 mA - defines primary regulation point for precision reference or clamping |
| Tolerance | ±5 % - specifies allowable deviation (34.2 V to 37.8 V) in production units |
| Ptot | 250 mW at Tamb ≤ 25 °C - maximum continuous power handling on standard FR4 PCB |
| rdif | 80 Ω typical - quantifies dynamic impedance affecting regulation stability under load variation |
| IR @ VR = 28.8 V | ≤100 nA - ensures minimal leakage current in high-impedance bias or sensing circuits |
| AEC-Q101 | Qualified - confirms suitability for automotive electronics per stress-test requirements |
| Package | SOT23 (TO-236AB) - 3-pin surface-mount outline with 2.8 mm × 1.4 mm footprint |
Pinout & Package
SOT23 (TO-236AB) plastic surface-mounted package with 3 leads; dimensions: 2.8 mm × 1.4 mm × 1.1 mm; standard footprint per Figure 9 (reflow soldering).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Connected to lower-potential node; reverse-biased operation requires cathode at higher voltage |
| 2 | Not connected (n.c.) | Internally unconnected; no electrical function - must remain floating on PCB |
| 3 | Cathode (K) | Connected to regulated voltage rail; carries reverse current during Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q101 compliant - validated for under-hood and body-control module environments |
| Low leakage performance | ≤100 nA at 80 % VZ - enables use in battery-powered sensor bias networks |
| Thermal robustness | −65 °C to +150 °C junction temperature range - supports extended industrial and automotive ambient conditions |
| Standardized marking | *T7 code per Table 4 - allows visual identification on assembled PCBs |
| Pulse survivability | 0.8 A non-repetitive peak reverse current (100 µs) - handles transient overvoltage events without failure |
Applications
| Power Supply Voltage Reference | Overvoltage Clamp in Signal Lines |
|---|---|
Use Scenario: Providing stable 36 V reference for ADC biasing or comparator threshold in automotive control units. IC Role / Device Role / Timing Role: Passive shunt voltage reference establishing fixed DC potential independent of supply ripple. Use Value: Enables accurate analog measurement with <±5 % output tolerance and <80 Ω dynamic impedance. |
Use Scenario: Protecting microcontroller GPIO pins from ESD or load-dump transients on 24 V CAN bus interfaces. IC Role / Device Role / Timing Role: Fast-acting voltage clamp diverting surge current away from sensitive inputs. Use Value: Limits voltage to ≤37.8 V during transients while sustaining 0.8 A peak current for 100 µs. |
| Low-Power Sensor Biasing | Industrial Current Loop Protection |
Use Scenario: Biasing photodiode or RTD bridge circuits in battery-operated environmental sensors. IC Role / Device Role / Timing Role: Low-leakage (≤100 nA) voltage source ensuring minimal error in high-impedance sensing paths. Use Value: Maintains signal integrity with negligible current draw, extending battery life in wireless nodes. |
Use Scenario: Clamping fault voltages in 4–20 mA transmitter outputs exposed to field wiring faults. IC Role / Device Role / Timing Role: Fail-safe shunt element limiting loop voltage to safe levels during short-circuit or open-wire events. Use Value: Prevents damage to DACs and op-amps by clamping to 37.8 V with AEC-Q101 reliability assurance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5245B-7-F (Diodes Inc.) | 36 V nominal, ±5 %, 200 mW Ptot, SOT23 package, 100 nA IR @ 28.8 V | Lower power rating reduces thermal margin in sustained 2 mA operation | Select when board space matches and 200 mW suffices; verify thermal derating at elevated ambient |
| 1SMA5936BT3G (onsemi) | 36 V nominal, ±5 %, 1.5 W Ptot, SMA package (larger), 1 µA IR @ 28.8 V | Higher power and larger footprint suit high-energy transient suppression, not space-constrained PCBs | Choose for higher surge energy handling where SOT23 size constraint is relaxed |
Compared with MMBZ5245B-7-F, BZX84-C36/LF1R offers 25 % higher continuous power; versus 1SMA5936BT3G, it provides identical VZ tolerance in 40 % smaller footprint but trades off surge capacity for miniaturization.
Availability
BZX84-C36/LF1R is available at Aetrix Electronics and suitable for automotive control modules, industrial sensor interfaces, and battery-powered instrumentation requiring stable component supply and AEC-Q101 compliance.
Supply support for BZX84-C36/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 markets.
The BZX84 series was developed 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 nominal Zener voltage and tolerance of BZX84-C36/LF1R?
The BZX84-C36/LF1R has a nominal Zener voltage of 36 V at 2 mA test current, with a guaranteed tolerance of ±5 % (34.2 V to 37.8 V). This tolerance band is defined per the "C" series classification in the BZX84 family and confirmed in Table 9 of the NXP datasheet Rev. 6.
Is BZX84-C36/LF1R suitable for automotive applications?
Yes, BZX84-C36/LF1R is AEC-Q101 qualified per Section 8.1 of the NXP datasheet, making it suitable for automotive applications including engine control units, body electronics, and infotainment systems where reliability under temperature cycling and mechanical stress is required.
What is the maximum continuous power dissipation for BZX84-C36/LF1R?
BZX84-C36/LF1R has a maximum total power dissipation (Ptot) of 250 mW at ambient temperature ≤25 °C when mounted on a standard FR4 PCB with single-sided copper, as specified in Table 5 (Limiting Values) and Table 1 (Quick Reference Data).
How is the BZX84-C36/LF1R marked on the device body?
The BZX84-C36/LF1R uses the marking code *T7, as listed in Table 4 of the NXP datasheet. The asterisk is a placeholder for the manufacturing site code; the visible alphanumeric portion on the SOT23 package is "T7".
What are the pin functions of BZX84-C36/LF1R in the SOT23 package?
In the SOT23 package, Pin 1 is Anode (A), Pin 2 is Not Connected (n.c.), and Pin 3 is Cathode (K), as defined in Table 2 (Pinning) of the NXP datasheet. Pin 2 must remain unconnected on the PCB layout to avoid unintended parasitic paths.
BZX84-C36/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):
- 36 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 23.1 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-C36/LF1R FAQ
1.How can I place an order for BZX84-C36/LF1R through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84-C36/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-C36/LF1R reliable?
The price and inventory of BZX84-C36/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-C36/LF1R is usually 5 days.
3.What payment methods are accepted for BZX84-C36/LF1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-C36/LF1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84-C36/LF1R?
BZX84-C36/LF1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84-C36/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-C36/LF1R?
For technical support, including BZX84-C36/LF1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-C36/LF1R requirements.
6.How does Aetrix verify that BZX84-C36/LF1R is sourced from the original manufacturer or authorized distributors?
All BZX84-C36/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-C36/LF1R meets industry standards.
7.What is the process for return or replacement of BZX84-C36/LF1R?
All BZX84-C36/LF1R units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-C36/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-C36/LF1R part is unused and in its original packaging.
Return procedure for BZX84-C36/LF1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84-C36/LF1R Tags
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MMBZ5240B-7-F
Diodes Incorporated
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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
Micro Commercial Co
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BZT52C3V6LP-7
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SMAZ12-13-F
Diodes Incorporated
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