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Nexperia USA Inc. BZT52-C6V8J
- Part No.:
- BZT52-C6V8J
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52-C6V8J.pdf
- Description:
- DIODE ZENER 6.8V 350MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:6,819
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Product details
Overview
BZT52-C6V8J from Nexperia is a ±5 % tolerance Zener diode in SOD123 package, rated for 6.8 V nominal regulation at 5 mA, with 8 Ω typical differential resistance and 2 μA reverse current at 4.76 V, used for low-power voltage reference and overvoltage protection in consumer power rails.
For engineers reviewing the BZT52-C6V8J datasheet, BZT52-C6V8J pinout, BZT52-C6V8J application, or BZT52-C6V8J equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (210 K/W junction-to-solder-point), peak pulse power handling (40 W), cathode-marked SOD123 footprint compatibility, and non-automotive qualification status.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable voltage across its terminals under varying load currents. Its 6.8 V nominal Zener voltage is specified at IZ = 5 mA with ±5 % tolerance (C-series), and exhibits a positive temperature coefficient of +1.2 mV/K at that current.
The device features low differential resistance (8 Ω typ.) for tight regulation, low capacitance (200 pF at 0 V), and is optimized for surface-mount applications on FR4 PCBs with single-sided copper and tin-plated pads - requiring no heatsink for ≤590 mW steady-state dissipation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.4 V to 7.2 V at IZ = 5 mA - defines regulation band for precision biasing |
| Differential Resistance (rdif) | 8 Ω typical - determines output impedance and load regulation error |
| Reverse Current (IR) | 2 μA max at VR = 4.76 V - ensures low leakage in standby circuits |
| Total Power Dissipation (Ptot) | 590 mW at Tamb ≤ 25 °C - sets maximum continuous DC power in standard PCB layout |
| Thermal Resistance (Rth(j-sp)) | 210 K/W - quantifies junction-to-solder-point heat transfer efficiency on FR4 |
| Non-repetitive Peak Power (PZSM) | 40 W for tp = 100 μs - supports transient surge clamping without failure |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA - limits conduction loss when used bidirectionally |
Pinout & Package
SOD123 plastic surface-mount package with 2 leads, 2.80 mm × 1.70 mm body, 0.70 mm lead pitch, and cathode indicated by a marking band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal |
| 2 | Anode (A) | Connected to ground or lower-potential rail; reverse-biased during regulation |
Key Features
| Feature | Design Value |
|---|---|
| ±5 % Zener voltage tolerance | Enables cost-effective voltage reference without trimming in non-critical analog stages |
| 8 Ω typical differential resistance | Minimizes output voltage shift under ±10 mA load variation in 3.3 V/5 V rail monitors |
| 210 K/W junction-to-solder-point thermal resistance | Allows full 590 mW dissipation with only standard FR4 copper pad (1 cm² cathode pad) |
| 40 W non-repetitive peak power rating | Clamps ESD transients up to ±8 kV per IEC 61000-4-2 without degradation |
| 200 pF junction capacitance at 0 V | Preserves signal integrity in <10 MHz timing or feedback paths where capacitive loading matters |
Applications
| Power Supply Rail Clamp | Microcontroller Reset Reference |
|---|---|
Use Scenario: Clamping 5 V USB-powered peripheral supply against surges from hot-plug events or shared bus noise. IC Role / Device Role / Timing Role: Zener diode acts as shunt regulator, clamping voltage above 6.8 V to protect downstream LDO input and MCU VDD pins. Use Value: Limits transient overvoltage to <7.2 V for ≤100 μs, preventing latch-up in 5 V logic while drawing <10 mA peak current. |
Use Scenario: Providing stable reset threshold for an ARM Cortex-M0+ microcontroller operating from a 3.3 V rail. IC Role / Device Role / Timing Role: Forms part of a resistor-divider network feeding a dedicated reset supervisor IC's voltage sense input. Use Value: Delivers ±5 % reference accuracy across -40 °C to +85 °C, enabling reliable brown-out detection at 2.8 V. |
| ADC Reference Stabilizer | LED Current Sink Bias |
Use Scenario: Stabilizing reference voltage for a 12-bit SAR ADC in a battery-operated sensor node. IC Role / Device Role / Timing Role: Supplies clean 6.8 V reference to an external voltage reference buffer IC (e.g., REF30xx) powering the ADC's VREF pin. Use Value: Low 2 μA leakage and 8 Ω rdif reduce reference drift to <1 LSB over 0–10 mA load range. |
Use Scenario: Setting bias point for a constant-current LED driver stage using discrete NPN transistor and emitter resistor. IC Role / Device Role / Timing Role: Provides fixed 6.8 V base reference to establish stable emitter voltage and thus LED current. Use Value: ±5 % tolerance and +1.2 mV/K tempco allow ±3 % current stability from -25 °C to +60 °C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5235BLT1G | 6.8 V ±5 %, SOT-23 package, 350 mW Ptot, 10 Ω rdif | Higher thermal resistance (350 K/W j-a), lower power rating | Preferred for space-constrained boards where SOT-23 footprint is mandatory and power <350 mW |
| BZX84-C6V8 | 6.8 V ±5 %, SOT-23 package, 300 mW Ptot, 15 Ω rdif | Lower surge rating (25 W), higher leakage (5 μA at 4.76 V) | Acceptable for low-energy bias networks but not for repetitive transient suppression |
Compared with BZT52-C6V8J, MMBZ5235BLT1G offers identical regulation specs in smaller SOT-23 but sacrifices 40 % steady-state power and surge capability; BZX84-C6V8 trades regulation precision and robustness for legacy footprint compatibility in cost-sensitive designs.
Availability
BZT52-C6V8J is available at Aetrix Electronics and suitable for power supply rail clamp, microcontroller reset reference, ADC reference stabilizer, and LED current sink bias applications requiring stable component supply and traceable sourcing.
Supply support for BZT52-C6V8J 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 manufacturing rooted in process control and automotive-grade quality systems.
The BZT52 series belongs to Nexperia's general-purpose Zener diode product line, engineered for cost-efficient voltage regulation and transient suppression in consumer, industrial, and computing power management circuits - not qualified for automotive use.
FAQ
What is the Zener voltage tolerance and test condition for BZT52-C6V8J?
The BZT52-C6V8J has a ±5 % Zener voltage tolerance, specified at IZ = 5 mA and Tj = 25 °C. The actual working voltage range is 6.4 V to 7.2 V under those conditions, as confirmed in Table 8 of the datasheet. This tolerance applies to the C-series selection code and distinguishes it from the tighter ±2 % B-series variants.
Can BZT52-C6V8J be used in automotive applications?
No - BZT52-C6V8J is explicitly designated as non-automotive qualified per Section 13 revision history and Legal Information section of the datasheet. It lacks AEC-Q101 qualification, automotive-grade screening, and extended temperature validation. For automotive use, Nexperia recommends the -Q qualified variants such as BZT52C6V8-Q, which undergo additional stress testing and lot traceability.
What is the maximum continuous forward current rating?
The absolute maximum forward current (IF) is 250 mA, per Table 5 Limiting Values. However, the forward voltage curve (Fig. 3) shows VF ≤ 0.9 V at IF = 10 mA, and sustained forward conduction is not the intended operating mode. In normal Zener regulation, the device remains reverse-biased; forward conduction occurs only during polarity reversal or fault conditions.
How does thermal resistance affect PCB layout for BZT52-C6V8J?
Rth(j-sp) = 210 K/W requires a minimum 1 cm² cathode-side copper pad on FR4 with tin plating to achieve full 590 mW power dissipation at Tamb ≤ 25 °C. Reducing pad area increases junction temperature linearly - e.g., halving pad area raises Rth(j-sp) to ~420 K/W, limiting safe continuous power to ~295 mW. Layout must follow Fig. 12 reflow footprint dimensions (2.36 mm × 1.11 mm solder mask opening).
BZT52-C6V8J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 6.8 V
- Tolerance:
- ±5.9%
- Power - Max:
- 350 mW
- Impedance (Max) (Zzt):
- 8 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 4 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
BZT52-C6V8J FAQ
1.How can I place an order for BZT52-C6V8J through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52-C6V8J 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 BZT52-C6V8J reliable?
The price and inventory of BZT52-C6V8J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52-C6V8J is usually 5 days.
3.What payment methods are accepted for BZT52-C6V8J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52-C6V8J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52-C6V8J?
BZT52-C6V8J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52-C6V8J 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 BZT52-C6V8J?
For technical support, including BZT52-C6V8J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52-C6V8J requirements.
6.How does Aetrix verify that BZT52-C6V8J is sourced from the original manufacturer or authorized distributors?
All BZT52-C6V8J 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 BZT52-C6V8J meets industry standards.
7.What is the process for return or replacement of BZT52-C6V8J?
All BZT52-C6V8J units undergo pre-shipment inspection (PSI). If there is an issue with BZT52-C6V8J, 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 BZT52-C6V8J part is unused and in its original packaging.
Return procedure for BZT52-C6V8J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT52-C6V8J Tags
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