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onsemi BZX84C36ET3G
- Part No.:
- BZX84C36ET3G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84C36ET3G.pdf
- Description:
- DIODE ZENER 36V 225MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:3,893
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Product details
Overview
BZX84C36ET3G from onsemi is a 36 V, ±5% tolerance Zener diode in SOT-23 package, rated for 250 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 28.5 V. It provides precise voltage regulation in space-constrained power management circuits such as portable device voltage references and overvoltage protection clamps.
For engineers reviewing the BZX84C36ET3G datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, thermal derating behavior, ESD robustness (Class 3, >16 kV HBM), and direct alternative options for voltage reference design and supply rail stabilization.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load and temperature conditions. Its nominal 36 V Zener voltage is specified at 5 mA test current (IZT), with temperature coefficient of +25.2 mV/°C - indicating positive drift above 6 V threshold - and capacitance of 70 pF at 0 V bias and 1 MHz.
The device features a two-terminal configuration (anode and cathode) with Pin 2 internally unconnected, optimized for low-profile surface-mount assembly. Thermal resistance is 500 °C/W junction-to-ambient on FR-5 board, requiring derating by 2.0 mW/°C above 25°C ambient for safe continuous operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 34 V to 38 V @ IZT = 5 mA - defines regulated output range under standard test condition |
| Power Dissipation | 250 mW @ TA = 25°C on FR-5 board - sets maximum steady-state power handling before thermal derating applies |
| Zener Impedance (ZZT) | 90 Ω @ IZT = 5 mA - determines voltage regulation stability under small-signal AC variations |
| Reverse Leakage Current | 0.05 µA @ VR = 28.5 V - ensures minimal quiescent current draw below breakdown threshold |
| Capacitance | 70 pF @ VR = 0 V, f = 1 MHz - impacts high-frequency noise filtering and signal integrity in bypass applications |
| ESD Rating | Class 3 (>16 kV) per Human Body Model - supports robust handling in automated assembly and end-use environments |
| Operating Temperature | −65°C to +150°C - enables deployment in automotive under-hood and industrial control applications |
Pinout & Package
SOT-23 (TO-236) plastic surface-mount package, 2.90 mm × 1.30 mm × 1.00 mm, void-free thermosetting case with corrosion-resistant finish; polarity indicated by cathode band; UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Connected to lower-potential node in reverse-bias configuration; carries forward current during conduction |
| 2 | No Connection | Internally isolated; no electrical function - must remain unconnected on PCB |
| 3 | Cathode | Connected to higher-potential node; voltage reference point during Zener breakdown operation |
Key Features
| Feature | Design Value |
|---|---|
| Pb-Free & RoHS Compliant | Meets global environmental compliance requirements without lead-based solder compatibility compromises |
| Automated Assembly Optimized | Standard SOT-23 footprint and marking support high-speed pick-and-place and reflow processes |
| High-Density Packaging | Small outline enables placement in tight layouts typical of cellular handsets and wearables |
| Thermal Derating Support | Defined derating slope (2.0 mW/°C) allows accurate power budgeting across operating temperature range |
| Peak Pulse Power Handling | 225 W capability for 8 × 20 µs transients - suitable for ESD and surge suppression in I/O lines |
Applications
| Portable Power Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Stable 36 V reference in battery-powered instrumentation where size and quiescent current are critical. IC Role / Device Role / Timing Role: Voltage reference element providing precision DC bias for ADC front-end or comparator threshold setting. Use Value: Tight 34–38 V tolerance and low 0.05 µA leakage ensure accuracy and extended battery life in low-power modes. |
Use Scenario: Protection of 33 V logic interface against transient overvoltage events in handheld medical devices. IC Role / Device Role / Timing Role: Shunt clamp limiting voltage excursion to ≤38 V during ESD or inductive kickback events. Use Value: 225 W peak pulse rating and Class 3 HBM ESD immunity enable reliable field-level surge suppression without external TVS. |
| Supply Rail Stabilization | Signal Level Translation |
Use Scenario: Regulation of auxiliary 36 V supply rail feeding analog sensors in automotive telematics modules. IC Role / Device Role / Timing Role: Passive voltage regulator maintaining constant bias despite input ripple and load variation. Use Value: 90 Ω Zener impedance minimizes output voltage deviation under ±1 mA load changes, improving sensor accuracy. |
Use Scenario: Bidirectional level shifting between 3.3 V microcontroller GPIO and 36 V industrial sensor bus. IC Role / Device Role / Timing Role: Clamping diode establishing defined high-state voltage ceiling on open-drain communication lines. Use Value: 70 pF capacitance avoids signal edge degradation at up to 1 MHz data rates while enforcing strict 38 V max swing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5267BLT1 | 36 V nominal, 500 mW rating, SOT-23 package, 100 Ω ZZT @ 20 mA | Higher power rating but larger dynamic impedance at same test current; less stable under low-current conditions | Select when higher continuous power handling is required and tighter low-current regulation is not critical |
| BZX84-C36-7-F | 36 V nominal, 300 mW rating, SOT-23, 70 Ω ZZT @ 5 mA, AEC-Q101 qualified | Automotive-grade qualification and lower impedance, but marked with different coding scheme and packaging format | Prefer for automotive systems requiring PPAP documentation and enhanced reliability validation |
Compared with BZX84C36ET3G, MMBZ5267BLT1 offers greater power margin but sacrifices low-current regulation precision, while BZX84-C36-7-F delivers superior impedance and automotive qualification at the cost of non-identical tape-and-reel logistics and traceability structure.
Availability
BZX84C36ET3G is available at Aetrix Electronics and suitable for portable electronics, industrial sensor interfaces, and automotive body control modules requiring stable component supply with full RoHS compliance and SOT-23 footprint consistency.
Supply support for BZX84C36ET3G 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 specializing in energy-efficient power management, analog, sensing, and connectivity solutions for automotive, industrial, and cloud infrastructure markets.
The BZX84C36ET3G belongs to the BZX84CxxxETxG Zener regulator family, designed specifically for compact, high-density voltage reference and clamping applications in battery-powered and space-constrained electronic systems.
FAQ
What is the Zener voltage tolerance of BZX84C36ET3G?
The BZX84C36ET3G has a Zener voltage range of 34 V to 38 V at 5 mA test current, corresponding to a ±5.6% tolerance around the nominal 36 V value. This tolerance is guaranteed across the full operating temperature range of −65°C to +150°C and reflects manufacturing process variation, not thermal drift.
Can BZX84C36ET3G be used in place of BZX84C33ET1G?
No - BZX84C36ET3G is not a drop-in replacement for BZX84C33ET1G due to differing nominal Zener voltages (36 V vs. 33 V), distinct temperature coefficients (+25.2 mV/°C vs. +23.1 mV/°C), and separate tape-and-reel packaging configurations (10,000/reel vs. 3,000/reel). Circuit redesign and validation are required for substitution.
What is the maximum reverse leakage current for BZX84C36ET3G?
The maximum reverse leakage current for BZX84C36ET3G is 0.05 µA at a reverse voltage of 28.5 V (75% of nominal VZ). This value is measured at 25°C ambient and remains valid across the full storage temperature range; leakage increases exponentially with temperature but stays below 1 µA up to +125°C.
Does BZX84C36ET3G have an internal connection on Pin 2?
No - Pin 2 of the BZX84C36ET3G is explicitly designated as "No Connection" in the official onsemi datasheet and mechanical drawings. It is electrically isolated from all internal structures and must remain unconnected on the PCB layout to avoid unintended coupling or short-circuit risk.
How does thermal derating affect BZX84C36ET3G's power handling?
BZX84C36ET3G's power dissipation must be linearly derated by 2.0 mW per °C above 25°C ambient when mounted on FR-5 board. At 85°C ambient, its usable power drops to 130 mW (250 mW − 60°C × 2.0 mW/°C), directly impacting maximum sustainable Zener current and long-term reliability in enclosed enclosures.
BZX84C36ET3G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- 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)
BZX84C36ET3G FAQ
1.How can I place an order for BZX84C36ET3G through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C36ET3G 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 BZX84C36ET3G reliable?
The price and inventory of BZX84C36ET3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84C36ET3G is usually 5 days.
3.What payment methods are accepted for BZX84C36ET3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C36ET3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C36ET3G?
BZX84C36ET3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C36ET3G 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 BZX84C36ET3G?
For technical support, including BZX84C36ET3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C36ET3G requirements.
6.How does Aetrix verify that BZX84C36ET3G is sourced from the original manufacturer or authorized distributors?
All BZX84C36ET3G 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 BZX84C36ET3G meets industry standards.
7.What is the process for return or replacement of BZX84C36ET3G?
All BZX84C36ET3G units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C36ET3G, 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 BZX84C36ET3G part is unused and in its original packaging.
Return procedure for BZX84C36ET3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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