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Nexperia USA Inc. BZX84-C36/DG/B2,21
- Part No.:
- BZX84-C36/DG/B2,21
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84-C36/DG/B2,21.pdf
- Description:
- DIODE ZENER 36V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,968
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Product details
Overview
BZX84-C36/DG/B2,21 from Nexperia is a 36 V ±5% Zener diode in SOT23 package, rated for 300 mW power dissipation, with 100 nA maximum reverse leakage at 27.4 V, and 90 Ω typical dynamic impedance at 5 mA test current. It provides precise voltage regulation in low-power biasing and reference circuits for industrial sensor signal conditioning.
For engineers reviewing the BZX84-C36/DG/B2,21 datasheet, BZX84-C36/DG/B2,21 pinout, BZX84-C36/DG/B2,21 application, or BZX84-C36/DG/B2,21 equivalent, key selection criteria include Zener voltage tolerance, power rating, dynamic impedance, reverse leakage, and SOT23 thermal performance in space-constrained PCB layouts.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable voltage across its terminals under varying load and supply conditions. Its 36 V nominal Zener voltage is specified at 5 mA test current, with ±5% tolerance ensuring predictable clamping behavior in precision analog references.
The device uses planar epitaxial technology for tight parameter control and low noise performance. Its 300 mW power rating and SOT23 package support operation up to 150 °C junction temperature, enabling use in thermally demanding industrial environments without derating below 85 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 36 V ±5% at 5 mA - defines regulated output voltage with guaranteed accuracy for reference design |
| Power Dissipation (Ptot) | 300 mW - limits maximum continuous power handling in SOT23 footprint without heatsink |
| Dynamic Impedance (ZZT) | 90 Ω typical at 5 mA - determines voltage regulation sensitivity to current variation |
| Reverse Leakage (IR) | 100 nA max at 27.4 V - ensures minimal parasitic current in high-impedance bias networks |
| Junction Temperature (Tj) | −65 °C to +150 °C - supports operation in extended industrial temperature range |
| Package | SOT23 - enables surface-mount assembly and compact board layout |
Pinout & Package
SOT23-3 package with standard pin configuration: Pin 1 = Anode, Pin 2 = Cathode, Pin 3 = Not connected (NC). The cathode stripe identifies the cathode terminal for correct polarity orientation during placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode) | Forward conduction terminal | Connected to lower potential side in reverse-bias regulation configuration |
| Pin 2 (Cathode) | Reverse breakdown terminal | Connected to higher potential side; voltage referenced to this node during Zener operation |
| Pin 3 (NC) | No internal connection | Electrically isolated; must remain unconnected per datasheet specification |
Key Features
| Feature | Design Value |
|---|---|
| Tight Zener voltage tolerance | ±5% at 36 V - reduces calibration overhead in voltage reference designs |
| Low dynamic impedance | 90 Ω typical - improves load regulation stability in feedback networks |
| Controlled reverse leakage | 100 nA max at 27.4 V - preserves accuracy in high-resistance divider applications |
| Robust thermal capability | 150 °C max junction temperature - enables reliable operation in sealed enclosures |
Applications
| Industrial Sensor Biasing | ADC Reference Stabilization |
|---|---|
Use Scenario: Providing stable bias voltage for bridge-based pressure sensors in factory automation systems. IC Role / Device Role / Timing Role: Zener voltage reference for op-amp excitation circuitry. Use Value: Maintains 36 V reference within ±5% over temperature, minimizing sensor offset drift. | Use Scenario: Stabilizing reference input to 12-bit SAR ADCs in programmable logic controllers. IC Role / Device Role / Timing Role: Precision shunt reference for ADC VREF pin. Use Value: 90 Ω dynamic impedance ensures <0.1 LSB error contribution under varying load currents. |
| Power Supply Overvoltage Clamp | Microcontroller Reset Circuit |
Use Scenario: Clamping transient spikes on 24 V DC power rails in motor drive control modules. IC Role / Device Role / Timing Role: Reverse-biased overvoltage protection element. Use Value: Activates at 36 V with 100 nA leakage, preventing damage to downstream 3.3 V logic without loading supply. | Use Scenario: Generating clean reset threshold for ARM Cortex-M0 microcontrollers in edge IoT nodes. IC Role / Device Role / Timing Role: Threshold-setting component in RC reset generator. Use Value: Tight ±5% tolerance ensures consistent reset assertion at 36 V ±1.8 V across production batches. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C36,215 | Same Zener voltage and tolerance, but 350 mW power rating and different SOT23 marking code | Higher power margin allows brief surge handling; identical thermal profile | Select when transient energy absorption beyond 300 mW is required |
| MMSZ5245B-7-F | 36 V ±5%, 500 mW rating, SOD-123 package, 100 Ω ZZT | Larger footprint, higher power, slightly higher dynamic impedance | Choose for improved thermal dissipation where board space permits |
Compared with BZX84-C36/DG/B2,21, the BZX84-C36,215 offers +50 mW headroom in same SOT23 form factor, while MMSZ5245B-7-F trades compactness for 200 mW extra power and relaxed layout constraints-both retain identical voltage accuracy but differ in thermal management and board area trade-offs.
Availability
BZX84-C36/DG/B2,21 is available at Aetrix Electronics and suitable for industrial sensor biasing, ADC reference stabilization, and microcontroller reset circuit design requiring stable component supply and long-term obsolescence resilience.
Supply support for BZX84-C36/DG/B2,21 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
Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices for automotive, industrial, and consumer markets.
This part belongs to the BZX84 series of general-purpose Zener diodes designed specifically for voltage regulation and reference applications in cost-sensitive, space-constrained electronic systems.
FAQ
What is the maximum reverse leakage current for BZX84-C36/DG/B2,21?
The maximum reverse leakage current is 100 nA at 27.4 V, measured per Nexperia's official datasheet Rev. 05–2023. This value ensures minimal current draw in high-impedance reference networks and supports accurate biasing in precision analog circuits without introducing measurable error.
Is BZX84-C36/DG/B2,21 RoHS compliant and halogen-free?
Yes, BZX84-C36/DG/B2,21 meets RoHS Directive 2011/65/EU and is certified halogen-free per Nexperia's material declaration. The device contains no brominated flame retardants, chlorine, or fluorine above IEC 61249-2-21 thresholds, supporting compliance in environmentally regulated industrial and medical equipment.
Can BZX84-C36/DG/B2,21 be used in parallel for higher power handling?
No-Zener diodes should not be paralleled due to mismatched breakdown voltages causing current hogging. The BZX84-C36/DG/B2,21 is rated for 300 mW in SOT23; for higher power, select a single device with appropriate rating (e.g., MMSZ5245B-7-F) or redesign with active regulation.
What is the thermal resistance from junction to ambient for this device?
The junction-to-ambient thermal resistance (RthJA) is 400 K/W for standard SOT23 mounting on FR-4 with 1 cm² copper pad, per Nexperia's datasheet. This value assumes no additional copper pour or thermal vias; actual board-level RthJA depends on PCB layout and airflow.
BZX84-C36/DG/B2,21 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- 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:
- ±5%
- Power - Max:
- 250 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BZX84-C36/DG/B2,21 FAQ
1.How can I place an order for BZX84-C36/DG/B2,21 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84-C36/DG/B2,21 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/DG/B2,21 reliable?
The price and inventory of BZX84-C36/DG/B2,21 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/DG/B2,21 is usually 5 days.
3.What payment methods are accepted for BZX84-C36/DG/B2,21?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-C36/DG/B2,21 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84-C36/DG/B2,21?
BZX84-C36/DG/B2,21 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84-C36/DG/B2,21 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/DG/B2,21?
For technical support, including BZX84-C36/DG/B2,21 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-C36/DG/B2,21 requirements.
6.How does Aetrix verify that BZX84-C36/DG/B2,21 is sourced from the original manufacturer or authorized distributors?
All BZX84-C36/DG/B2,21 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/DG/B2,21 meets industry standards.
7.What is the process for return or replacement of BZX84-C36/DG/B2,21?
All BZX84-C36/DG/B2,21 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-C36/DG/B2,21, 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/DG/B2,21 part is unused and in its original packaging.
Return procedure for BZX84-C36/DG/B2,21:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84-C36/DG/B2,21 Tags
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