My Inquiry
My Account
Nexperia USA Inc. BZX8450-C6V8R
- Part No.:
- BZX8450-C6V8R
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX8450-C6V8R.pdf
- Description:
- DIODE ZENER 6.8V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:44,729
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZX8450-C6V8R from Nexperia is a low-current Zener voltage regulator diode in SOT23 package, designed for precision biasing and voltage reference in portable electronics. It delivers 6.8 V nominal regulation at 50 µA test current, with ±5 % tolerance, 80 Ω differential resistance at 5 mA, and 1.2 mV/K temperature coefficient. Used in battery-powered sensor signal conditioning circuits where low quiescent current and stable reference are critical.
For engineers reviewing the BZX8450-C6V8R datasheet, BZX8450-C6V8R pinout, BZX8450-C6V8R application, or BZX8450-C6V8R equivalent, this page provides verified electrical parameters, SOT23 terminal mapping, low-leakage Zener behavior, thermal resistance data (330 K/W to solder point), and validated alternatives for voltage reference design.
Technical Context
This Zener diode operates in reverse breakdown with specified regulation at IZ = 50 µA - enabling ultra-low-power biasing in microcontroller reset circuits and analog front-end references. Its intentional minor leakage rise (per AN90031) reduces switching noise in low-frequency regulation paths.
The device exhibits 100 pF capacitance at 0 V reverse bias and maintains <1 µA reverse current up to VR = 5.1 V, supporting clean DC reference generation without significant AC coupling effects. Junction-to-solder-point thermal resistance of 330 K/W enables reliable operation on standard FR4 PCBs under 250 mW total dissipation limits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 6.8 V at IZ = 50 µA - defines precise DC reference level for low-bias circuits |
| Tolerance | ±5 % - supports cost-sensitive designs where tight regulation is not required |
| Differential Resistance | 80 Ω at IZ = 5 mA - determines output impedance and load regulation error |
| Temperature Coefficient | +1.2 mV/K - enables predictable drift compensation in ambient-variant environments |
| Forward Voltage | ≤0.9 V at IF = 10 mA - ensures minimal drop in series-bias configurations |
| Max Power Dissipation | 250 mW at Tamb ≤ 25 °C - sets upper limit for continuous DC power handling on standard PCB |
| Junction-to-Solder-Point Rth | 330 K/W - quantifies thermal path efficiency for cathode-tab heat transfer in layout |
Pinout & Package
SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch) with three terminals and internal anode/cathode/n.c. configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Connects to lower-potential node in reverse-biased Zener configuration |
| 2 | Not Connected (n.c.) | Electrically isolated; no internal bond wire or die connection |
| 3 | Cathode (K) | Primary heat path and high-side connection; ties to regulated voltage rail |
Key Features
| Feature | Design Value |
|---|---|
| Low test current specification | Regulated at 50 µA - enables use in nanoamp-level standby circuits without loading |
| Optimized leakage profile | Intentional minor IR rise per AN90031 - suppresses high-frequency noise in reference nodes |
| Stable low-voltage reference | 6.8 V ±5 % with +1.2 mV/K TC - suitable for ADC reference buffers and LDO feedback dividers |
| Thermally efficient cathode tab | Rth(j-sp) = 330 K/W - allows >150 °C junction operation with minimal board copper |
Applications
| Portable Sensor Biasing | Microcontroller Reset Circuit |
|---|---|
Use Scenario: Providing stable 6.8 V reference to op-amp input stages in battery-powered environmental sensors. IC Role / Device Role / Timing Role: Zener voltage reference establishing fixed bias point for analog signal chain. Use Value: Enables consistent sensor offset calibration across 0–85 °C ambient range with <±10 mV drift. |
Use Scenario: Generating clean reset threshold for ARM Cortex-M0+ MCUs operating from 3.3 V rails with brown-out detection. IC Role / Device Role / Timing Role: Reverse-biased Zener clamping reset line to 6.8 V until supply stabilizes. Use Value: Eliminates need for dedicated reset IC; achieves <1 µA quiescent current during deep sleep mode. |
| Low-Power ADC Reference | LED Current Setpoint |
Use Scenario: Supplying reference voltage to 12-bit SAR ADC in wearable health monitor with coin-cell battery. IC Role / Device Role / Timing Role: Precision shunt reference defining full-scale input range for analog-to-digital conversion. Use Value: Delivers <0.5 LSB integral nonlinearity contribution due to 80 Ω dynamic impedance at 5 mA. |
Use Scenario: Setting constant current for indicator LEDs in industrial HMI panel powered by 12 V bus. IC Role / Device Role / Timing Role: Zener-based current source reference in emitter-follower LED driver stage. Use Value: Maintains ±3 % LED brightness stability over 10–40 °C ambient with <2 % supply ripple rejection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C6V8 | Same 6.8 V nominal, ±5 % tolerance, but higher rdiff (120 Ω @ 5 mA) and no intentional leakage optimization | Lacks AN90031 noise-reduction tuning; less suitable for sensitive analog references | Prefer when lowest-cost Zener suffices and EMI sensitivity is not critical |
| MMSZ4687 | 6.8 V ±5 %, but rated at 500 mW Ptot, 150 Ω rdiff, and 2.5 mV/K TC - higher power, looser TC | Designed for higher-current regulation; unsuitable for sub-100 µA bias applications | Choose only if board layout permits larger thermal mass and system requires >200 mW dissipation headroom |
Compared with BZX8450-C6V8R, BZX84-C6V8 trades noise performance for cost, while MMSZ4687 sacrifices low-current accuracy and thermal stability for higher power handling - making BZX8450-C6V8R optimal for precision, low-quiescent reference roles.
Availability
BZX8450-C6V8R is available at Aetrix Electronics and suitable for portable sensor biasing, microcontroller reset circuits, low-power ADC references, and LED current setpoint applications requiring stable component supply across production lifecycles.
Supply support for BZX8450-C6V8R 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, with leadership in automotive-qualified and industrial-grade components.
The BZX8450 series belongs to Nexperia's low-current Zener portfolio, engineered specifically for battery-powered and space-constrained applications demanding stable voltage references at microamp-level test currents.
FAQ
What is the maximum reverse voltage before breakdown for BZX8450-C6V8R?
The device is rated for nominal 6.8 V Zener voltage at 50 µA test current, with guaranteed breakdown between 6.46 V and 7.14 V (±5 %). It does not specify a distinct "maximum reverse voltage before breakdown" - instead, it enters controlled regulation at voltages ≥6.46 V under defined test conditions.
Can BZX8450-C6V8R be used in forward conduction mode?
Yes - its forward voltage is specified ≤0.9 V at 10 mA, making it usable as a low-drop silicon diode in clamp or protection roles. However, its primary design intent and characterization are for reverse-biased Zener operation; forward characteristics are secondary and not optimized for switching speed or recovery.
How does the "n.c." pin affect PCB layout and thermal design?
Pin 2 is unconnected internally, so it must remain floating on the PCB - no trace or pad connection. This simplifies routing but means only pins 1 (anode) and 3 (cathode) contribute to thermal conduction; the cathode tab (pin 3) carries the full thermal load, requiring adequate copper area for heatsinking per the 330 K/W Rth(j-sp) spec.
Is BZX8450-C6V8R suitable for automotive applications?
No - the datasheet explicitly states these devices are non-automotive qualified. They are not tested to AEC-Q101, lack automotive-grade screening, and have no guaranteed operation beyond −55 °C to +150 °C ambient. For automotive use, Nexperia offers separate AEC-Q101-qualified Zener families such as PZTA44 or BZX84-A series.
BZX8450-C6V8R 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):
- 6.8 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 5.1 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BZX8450-C6V8R FAQ
1.How can I place an order for BZX8450-C6V8R through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8450-C6V8R 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 BZX8450-C6V8R reliable?
The price and inventory of BZX8450-C6V8R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX8450-C6V8R is usually 5 days.
3.What payment methods are accepted for BZX8450-C6V8R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8450-C6V8R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8450-C6V8R?
BZX8450-C6V8R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8450-C6V8R 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 BZX8450-C6V8R?
For technical support, including BZX8450-C6V8R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8450-C6V8R requirements.
6.How does Aetrix verify that BZX8450-C6V8R is sourced from the original manufacturer or authorized distributors?
All BZX8450-C6V8R 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 BZX8450-C6V8R meets industry standards.
7.What is the process for return or replacement of BZX8450-C6V8R?
All BZX8450-C6V8R units undergo pre-shipment inspection (PSI). If there is an issue with BZX8450-C6V8R, 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 BZX8450-C6V8R part is unused and in its original packaging.
Return procedure for BZX8450-C6V8R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8450-C6V8R 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…
