My Inquiry
My Account
Nexperia USA Inc. BZX84-C3V6/DG/B4R
- Part No.:
- BZX84-C3V6/DG/B4R
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84-C3V6/DG/B4R.pdf
- Description:
- DIODE ZENER 3.6V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,144
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZX84-C3V6/DG/B4R from Nexperia is a 3.6 V, 250 mW surface-mount Zener diode in SOT-23 package with ±5% tolerance, 100 nA maximum reverse leakage at 1 V, and 90 Ω typical dynamic impedance, used for voltage regulation and overvoltage protection in low-power sensor biasing circuits.
For engineers reviewing the BZX84-C3V6/DG/B4R datasheet, BZX84-C3V6/DG/B4R pinout, BZX84-C3V6/DG/B4R application, or BZX84-C3V6/DG/B4R equivalent, key selection criteria include Zener voltage accuracy, power dissipation limit, thermal resistance, and SOT-23 footprint compatibility with automated PCB assembly.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable reference voltage across its terminals under varying load and supply conditions. It features a nominal Zener voltage of 3.6 V at test current of 5 mA, with guaranteed operation up to 200 mW derated above 25 °C per 1.67 mW/K thermal coefficient.
The device uses planar epitaxial technology for consistent voltage tolerance and low noise performance. Its SOT-23 package provides thermal resistance of 400 K/W junction-to-ambient, enabling reliable operation in compact, non-ventilated environments without forced cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.6 V ±5% at IZ = 5 mA - defines precise clamping level for 3.3 V rail protection |
| Power Dissipation (Ptot) | 250 mW at Tamb = 25 °C - limits continuous current to ~69 mA at 3.6 V |
| Dynamic Impedance (ZZT) | 90 Ω max at IZ = 5 mA - ensures <180 mV output variation for ±10 mA load change |
| Reverse Leakage (IR) | 100 nA max at VR = 1 V - negligible current draw in standby sensor circuits |
| Package | SOT-23 - enables 0.65 mm pitch pick-and-place placement and 1.3 mm² board area |
| Thermal Resistance (RthJA) | 400 K/W - requires derating to 150 mW at 75 °C ambient for sustained reliability |
Pinout & Package
SOT-23 plastic surface-mount package with three terminals: anode (pin 1), cathode (pin 2), and unused terminal (pin 3) - pin 3 is internally unconnected and must remain floating or grounded per layout guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode | Connected to lower-potential node; reverse-biased during regulation |
| Pin 2 | Cathode | Connected to higher-potential node; voltage reference output point |
| Pin 3 | NC | No internal connection; must not be soldered to power/ground planes |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance | Enables direct replacement in 3.3 V system bias networks without recalibration |
| Low 100 nA reverse leakage | Preserves battery life in always-on IoT sensor nodes drawing <1 µA quiescent current |
| 90 Ω dynamic impedance | Maintains regulation stability under transient load steps common in ADC reference circuits |
| SOT-23 footprint compatibility | Supports reflow soldering with standard JEDEC J-STD-020 profile and AOI inspection |
Applications
| Industrial Sensor Signal Conditioning | USB Peripheral Overvoltage Clamp |
|---|---|
Use Scenario: Protecting 3.3 V analog front-end inputs of temperature/humidity sensors against ESD and supply transients. IC Role / Device Role / Timing Role: Zener clamp placed between signal line and ground to shunt >4 V spikes before reaching ADC input. Use Value: Limits input voltage to 3.6 V ±5%, preventing damage to 3.3 V tolerant SAR ADCs with 100 nA leakage preserving measurement offset. | Use Scenario: Safeguarding USB data lines (D+/D−) from 5 V bus coupling during hot-plug events. IC Role / Device Role / Timing Role: Bidirectional clamping pair (two devices) referenced to ground to suppress ±6 V transients. Use Value: 90 Ω ZZT ensures fast response to 1 kV/µs ESD pulses while maintaining <1 pF parasitic capacitance for USB 2.0 signal integrity. |
| Low-Power Microcontroller Reset Circuit | White LED Current Regulation |
Use Scenario: Generating clean 3.6 V reset threshold for ARM Cortex-M0+ MCUs operating from 3.3 V rails. IC Role / Device Role / Timing Role: Zener-based voltage divider feeding comparator input to trigger POR or brown-out detection. Use Value: ±5% VZ tolerance ensures reset assertion within 3.42–3.78 V window, meeting STMicro STM32L0x specification. | Use Scenario: Setting constant current for single 20 mA white LED in portable lighting modules. IC Role / Device Role / Timing Role: Series-pass Zener element dropping excess voltage from 5 V supply to match LED forward voltage. Use Value: 250 mW rating supports 20 mA × (5 V − 3.2 V) = 36 mW dissipation with 164 mW margin for ambient rise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5227BS-7-F | 3.6 V ±5%, 300 mW, SOT-323 package, 150 Ω ZZT | Larger thermal resistance (500 K/W) reduces usable power at elevated ambient | Preferred when board space allows larger SOT-323 and higher power margin is needed |
| BZX84-C3V6,115 | Identical electrical specs, same SOT-23 package, differing tape-and-reel packaging code | No functional difference; qualified for same automotive AEC-Q200 stress tests | Select for direct drop-in replacement where reel orientation or labeling matches legacy BOM |
Compared with BZX84-C3V6/DG/B4R, MMBZ5227BS-7-F offers higher power but requires more board area and has poorer thermal performance, while BZX84-C3V6,115 is electrically identical with no design impact-making it ideal for seamless BOM updates.
Availability
BZX84-C3V6/DG/B4R is available at Aetrix Electronics and suitable for industrial sensor interfaces, USB peripheral protection, microcontroller reset circuits, and LED biasing requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZX84-C3V6/DG/B4R 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, serving automotive, industrial, and consumer markets with ISO/TS 16949-certified manufacturing.
This Zener diode belongs to Nexperia's BZX84 series designed specifically for precision voltage reference and clamping in space-constrained, low-power applications where SOT-23 compatibility and tight tolerance are critical.
FAQ
What is the maximum reverse current the BZX84-C3V6/DG/B4R can handle continuously?
The device is rated for 250 mW total power dissipation at 25 °C ambient. At its 3.6 V Zener voltage, this corresponds to a maximum continuous reverse current of approximately 69 mA. Derating applies linearly above 25 °C at 1.67 mW/K, reducing usable current to ~42 mA at 75 °C ambient.
Can BZX84-C3V6/DG/B4R be used in bidirectional ESD protection configurations?
Yes - two units configured anode-to-anode (or cathode-to-cathode) form a symmetrical clamp for ±3.6 V protection. This configuration achieves <100 pF total capacitance and clamps transients to within ±4.0 V, making it suitable for USB 2.0 and I²C bus protection without signal distortion.
How does the SOT-23 pin 3 (NC) affect PCB layout?
Pin 3 is internally unconnected and must not be tied to any net. Layout guidelines require isolation from copper pours and traces; soldering it risks mechanical stress-induced die cracking. Standard SOT-23 footprints with 0.65 mm pitch accommodate this configuration without modification.
Is BZX84-C3V6/DG/B4R compliant with AEC-Q200 for automotive use?
No - this specific variant is qualified to general industrial standards (IEC 60134). For automotive applications, select BZX84-C3V6,115 or BZX84-C3V6-Q, which carry full AEC-Q200 qualification including temperature cycling, humidity testing, and mechanical shock validation.
BZX84-C3V6/DG/B4R 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:
- Active
- Voltage - Zener (Nom) (Vz):
- 3.6 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1 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-C3V6/DG/B4R FAQ
1.How can I place an order for BZX84-C3V6/DG/B4R through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84-C3V6/DG/B4R 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-C3V6/DG/B4R reliable?
The price and inventory of BZX84-C3V6/DG/B4R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84-C3V6/DG/B4R is usually 5 days.
3.What payment methods are accepted for BZX84-C3V6/DG/B4R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-C3V6/DG/B4R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84-C3V6/DG/B4R?
BZX84-C3V6/DG/B4R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84-C3V6/DG/B4R 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-C3V6/DG/B4R?
For technical support, including BZX84-C3V6/DG/B4R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-C3V6/DG/B4R requirements.
6.How does Aetrix verify that BZX84-C3V6/DG/B4R is sourced from the original manufacturer or authorized distributors?
All BZX84-C3V6/DG/B4R 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-C3V6/DG/B4R meets industry standards.
7.What is the process for return or replacement of BZX84-C3V6/DG/B4R?
All BZX84-C3V6/DG/B4R units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-C3V6/DG/B4R, 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-C3V6/DG/B4R part is unused and in its original packaging.
Return procedure for BZX84-C3V6/DG/B4R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84-C3V6/DG/B4R 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
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…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
