My Inquiry
My Account
onsemi BZX84C36LT1
- Part No.:
- BZX84C36LT1
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84C36LT1.pdf
- Description:
- DIODE ZENER 36V 225MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:7,202
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZX84C36LT1 from onsemi is a 36 V, ±5% tolerance Zener diode in SOT-23 package, rated for 225 mW power dissipation at 25°C on FR-5 board, with 90 Ω dynamic impedance at 5 mA test current and 0.05 µA reverse leakage at 28.8 V. It provides precise voltage regulation in space-constrained portable electronics.
For engineers reviewing the BZX84C36LT1 datasheet, pinout, applications, or equivalent options, key selection criteria include nominal Zener voltage (36 V), tolerance (±5%), thermal resistance (556 °C/W), ESD rating (>16 kV HBM), and SOT-23 footprint compatibility with automated assembly.
Technical Context
This device operates as a two-terminal voltage reference, conducting in reverse breakdown to clamp voltage across load circuits. Its Zener voltage is specified at three test currents (2 mA, 5 mA, 20 mA), with temperature coefficient of +25.2 mV/°C and capacitance of 70 pF at 0 V bias and 1 MHz.
The SOT-23 package features cathode-indicated polarity band, Pb-free option (BZX84C36LT1G), and UL 94 V-0 flammability rating. Thermal derating begins above 25°C at 1.8 mW/°C on FR-5 board, limiting usable power at elevated ambient temperatures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 36 V nominal, 34–38 V range at 5 mA - defines regulated output voltage under standard test conditions |
| Power Dissipation | 225 mW on FR-5 board at 25°C - sets maximum continuous power before thermal shutdown or degradation |
| Zener Impedance | 90 Ω at 5 mA - determines regulation accuracy under varying load current |
| Reverse Leakage | 0.05 µA at 28.8 V - ensures minimal standby current in high-impedance bias networks |
| Temperature Coefficient | +25.2 mV/°C - quantifies voltage drift per degree Celsius rise in junction temperature |
| Capacitance | 70 pF at 0 V, 1 MHz - impacts high-frequency noise filtering and signal integrity in RF-adjacent circuits |
| ESD Rating | Class 3 (>16 kV HBM) - enables robust handling in manual assembly and field-replaceable modules |
Pinout & Package
SOT-23 plastic surface-mount package (Case 318, Style 8), void-free thermosetting body with corrosion-resistant finish, rated for 260°C soldering (10 s). Cathode identified by band; Pin 2 is unconnected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Forward-biased terminal; connects to lower-potential node in regulation path |
| 2 | No Connection | Internally isolated; must remain unconnected on PCB to avoid parasitic coupling |
| 3 | Cathode | Reverse-biased terminal; connects to regulated voltage rail or reference node |
Key Features
| Feature | Design Value |
|---|---|
| Pb-Free Option Available | BZX84C36LT1G variant meets RoHS compliance without sacrificing electrical performance |
| High-Density Packaging | SOT-23 footprint (2.8 × 1.2 × 0.95 mm) enables placement on 0.65 mm pitch traces in mobile PCBs |
| Automated Assembly Optimized | Transfer-molded case geometry and solderable finish ensure >99.9% placement yield in pick-and-place lines |
| Tight Thermal Resistance Control | 556 °C/W junction-to-ambient allows predictable thermal modeling in thermally constrained layouts |
| Stable Low-Leakage Performance | 0.05 µA max IR at 80% VZ supports battery-powered circuits requiring <1 µA quiescent current |
Applications
| Smartphone Power Rail Clamping | USB Port Overvoltage Protection |
|---|---|
Use Scenario: Clamp transient spikes on 3.3 V or 5 V system rails during hot-plug events or ESD discharge. IC Role / Device Role / Timing Role: Two-terminal shunt regulator absorbing excess energy into ground via cathode connection. Use Value: Prevents damage to PMICs and USB transceivers by clamping voltages above 36 V with sub-100 ns response. | Use Scenario: Protect downstream USB data lines and VBUS monitoring circuitry from accidental 12 V misconnection. IC Role / Device Role / Timing Role: Standby-mode voltage limiter placed between VBUS and ground, activated only during overvoltage fault. Use Value: Limits fault voltage to 38 V max while drawing <0.1 µA during normal 5 V operation, preserving bus integrity. |
| Industrial Sensor Reference Stabilization | IoT Node Battery Voltage Monitoring |
Use Scenario: Provide stable 36 V reference for analog front-end scaling in 4–20 mA loop-powered sensors. IC Role / Device Role / Timing Role: Precision voltage reference source feeding ADC input divider network. Use Value: Maintains ±0.5% reference stability over −40°C to +85°C due to known +25.2 mV/°C TC and low ZZT. | Use Scenario: Monitor lithium-ion battery pack voltage (10–42 V) using resistive divider into MCU ADC. IC Role / Device Role / Timing Role: Overvoltage guard clamping divider output at 36 V to prevent ADC saturation during charging peaks. Use Value: Enables single-resistor divider design with no additional active components, reducing BOM count and leakage paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5267BLT1 | 36 V nominal, ±5%, 200 mW rating, 100 Ω ZZT at 20 mA, 0.1 µA IR at 28.8 V | Higher dynamic impedance and lower power rating limit use in precision references or high-current clamping | Select when legacy design uses MMBZ5267B footprint and thermal margin exceeds 25 mW |
| BZX84C36LT3G | Identical electrical specs, Pb-free, supplied in 10,000-piece tape-and-reel (vs. 3,000 for BZX84C36LT1) | No functional difference; optimized for high-volume automated production with larger reel size | Select for volume manufacturing where reel change frequency and feeder setup time impact line efficiency |
Compared with MMBZ5267BLT1, BZX84C36LT1 offers 25 mW higher power headroom and 10 Ω lower Zener impedance at 5 mA, improving regulation fidelity; versus BZX84C36LT3G, it shares identical performance but differs only in packaging quantity and reel diameter-no electrical or thermal trade-offs.
Availability
BZX84C36LT1 is available at Aetrix Electronics and suitable for smartphone power rail clamping, USB port overvoltage protection, and industrial sensor reference stabilization requiring stable component supply and consistent parametric performance across production lots.
Supply support for BZX84C36LT1 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient electronics, delivering silicon solutions for automotive, industrial, cloud, and IoT applications.
The BZX84C36LT1 belongs to the BZX84CxxxLT1 series of standard-tolerance Zener diodes designed specifically for compact, high-density voltage regulation in portable and battery-powered systems.
FAQ
What is the Zener voltage tolerance of the BZX84C36LT1?
The BZX84C36LT1 has a nominal Zener voltage of 36 V with a tolerance of ±5%, meaning its actual breakdown voltage falls between 34 V and 38 V when measured at 5 mA test current and 25°C ambient temperature. This tolerance is confirmed in the Electrical Characteristics table on page 3 of the official datasheet, and applies specifically to the BZX84C36LT1 variant-not the tighter-tolerance BZX84Bxxx series.
Does the BZX84C36LT1 have a built-in ESD protection rating?
Yes, the BZX84C36LT1 carries an ESD rating of Class 3 (>16 kV) per Human Body Model (HBM), as stated in the Specification Features section of the datasheet. This high-level ESD robustness is intrinsic to the device structure and packaging, making BZX84C36LT1 suitable for direct integration into handheld and field-serviceable electronics without external ESD components.
Can the BZX84C36LT1 be used in place of the BZX84C33LT1 for higher-voltage regulation?
No-BZX84C36LT1 and BZX84C33LT1 are distinct parts with non-interchangeable Zener voltages: BZX84C36LT1 regulates at 36 V (34–38 V), while BZX84C33LT1 regulates at 33 V (31–35 V). Substituting BZX84C36LT1 for BZX84C33LT1 would raise the clamping threshold by ~3 V, potentially exposing downstream circuitry to damaging overvoltage. Always verify target regulation voltage against the exact BZX84C36LT1 specification.
What is the maximum allowable junction temperature for the BZX84C36LT1?
The BZX84C36LT1 has a junction and storage temperature range of −65°C to +150°C, as specified in the Maximum Ratings table. Operation beyond +150°C risks permanent parametric shift or catastrophic failure. At ambient temperatures above 25°C, power dissipation must be linearly derated by 1.8 mW/°C on FR-5 board to maintain safe junction temperature-ensuring BZX84C36LT1 remains within limits under real-world thermal loads.
Is there a Pb-free version of the BZX84C36LT1 available?
Yes-the BZX84C36LT1G is the Pb-free variant of the BZX84C36LT1, explicitly noted in the Ordering Information and Electrical Characteristics tables. It shares identical electrical specifications, SOT-23 package dimensions, and thermal characteristics, differing only in lead finish composition to comply with RoHS Directive 2011/65/EU. Both BZX84C36LT1 and BZX84C36LT1G are pin-compatible and functionally interchangeable.
BZX84C36LT1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- BZX84CxxxLT1
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 36 V
- Tolerance:
- ±6%
- Power - Max:
- 225 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 25.2 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3 (TO-236)
BZX84C36LT1 FAQ
1.How can I place an order for BZX84C36LT1 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C36LT1 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 BZX84C36LT1 reliable?
The price and inventory of BZX84C36LT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84C36LT1 is usually 5 days.
3.What payment methods are accepted for BZX84C36LT1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C36LT1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C36LT1?
BZX84C36LT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C36LT1 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 BZX84C36LT1?
For technical support, including BZX84C36LT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C36LT1 requirements.
6.How does Aetrix verify that BZX84C36LT1 is sourced from the original manufacturer or authorized distributors?
All BZX84C36LT1 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 BZX84C36LT1 meets industry standards.
7.What is the process for return or replacement of BZX84C36LT1?
All BZX84C36LT1 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C36LT1, 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 BZX84C36LT1 part is unused and in its original packaging.
Return procedure for BZX84C36LT1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84C36LT1 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
