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Nexperia USA Inc. BZT5250H-B6V8-QX
- Part No.:
- BZT5250H-B6V8-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT5250H-B6V8-QX.pdf
- Description:
- DIODE ZENER 6.8V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:7,352
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Product details
Overview
BZT5250H-B6V8-QX from Nexperia is a low-current Zener diode in SOD123F package, designed for precision voltage regulation at 6.8 V nominal with ±2 % tolerance, 80 Ω differential resistance at 5 mA, and specified test current of 50 µA-ideal for battery-powered sensor biasing and automotive microcontroller reference rails.
For engineers reviewing the BZT5250H-B6V8-QX datasheet, BZT5250H-B6V8-QX pinout, BZT5250H-B6V8-QX application, or BZT5250H-B6V8-QX equivalent, this device delivers stable 6.8 V regulation under low-quiescent-current conditions (50 µA), supports AEC-Q101 automotive qualification, and operates within -55 °C to +150 °C ambient range with 830 mW total power dissipation capability.
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal Zener voltage of 6.66 V to 6.94 V at 50 µA test current, exhibiting a positive temperature coefficient of +1.2 mV/K and low 100 pF capacitance at 0 V reverse bias-enabling stable DC reference generation without significant thermal drift or high-frequency loading.
Its 80 Ω dynamic impedance at 5 mA ensures tight regulation under small-signal load variations, while the intentional minor leakage current optimization (per AN90031) reduces switching noise in mixed-signal automotive subsystems where EMI-sensitive analog circuitry coexists with digital control logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.66 V to 6.94 V at IZ = 50 µA - defines precise regulation point for low-power reference circuits |
| Tolerance | ±2 % - enables accurate voltage setting without post-assembly trimming in production |
| Differential Resistance (rdiff) | 80 Ω at IZ = 5 mA - ensures minimal output voltage shift under 100 µA load variation |
| Power Dissipation (Ptot) | 830 mW at Tamb ≤ 25 °C - supports sustained operation on standard FR4 PCB with 1 cm² cathode pad |
| Forward Voltage (VF) | 0.9 V at IF = 10 mA - allows use as low-drop rectifier or clamp in dual-role designs |
| Reverse Current (IR) | ≤ 0.1 µA at VR = 5.1 V - guarantees negligible standby leakage in always-on automotive modules |
| Thermal Resistance (Rth(j-a)) | 330 K/W in free air - informs derating requirements for ambient temperatures above 75 °C |
Pinout & Package
SOD123F surface-mount plastic package: 2.6 mm × 1.6 mm × 1.1 mm body, flat lead profile, cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal for correct PCB orientation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; forms reverse-biased junction for Zener action |
Key Features
| Feature | Design Value |
|---|---|
| Low-test-current specification | Rated at 50 µA - enables direct use in ultra-low-power sensor front-ends without additional bias current sources |
| AEC-Q101 qualification | Qualified per Automotive Electronics Council stress test standard - validated for under-hood and infotainment module deployment |
| Optimized leakage profile | Intentional minor rise per AN90031 - reduces transient switching noise during MCU wake-up events |
| Small-form-factor SMD | SOD123F footprint - fits high-density layouts in space-constrained ADAS camera modules and body control units |
Applications
| Automotive Microcontroller Reference | Portable Gas Sensor Biasing |
|---|---|
Use Scenario: Providing stable 6.8 V reference for ADC input scaling in engine control unit (ECU) analog front-end. IC Role / Device Role / Timing Role: Zener regulator supplying precision voltage to op-amp buffer driving 12-bit SAR ADC. Use Value: ±2 % tolerance and +1.2 mV/K TC ensure <0.5 % full-scale error across -40 °C to +125 °C operating range. |
Use Scenario: Biasing electrochemical gas sensor requiring constant 6.8 V excitation in handheld CO detector. IC Role / Device Role / Timing Role: Low-current voltage source enabling 50 µA sensor drive with minimal battery drain. Use Value: 50 µA test current rating matches sensor's optimal bias point, eliminating need for external current-limiting resistor. |
| Infotainment System Power Sequencing | Industrial IoT Node Voltage Clamp |
Use Scenario: Clamping 6.8 V rail during cold-cranking transients in automotive head unit power management. IC Role / Device Role / Timing Role: Overvoltage protection element shunting surge energy into ground path. Use Value: 40 W non-repetitive peak power rating handles 100 µs surges without degradation. |
Use Scenario: Stabilizing 6.8 V supply for LoRaWAN transceiver IC in remote environmental monitoring node. IC Role / Device Role / Timing Role: Primary regulation device maintaining RF IC VDD within 100 mV window during battery discharge. Use Value: 80 Ω rdiff limits voltage droop to <8 mV under 100 µA RF transmit current spikes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52C6V8-Q | ±5 % tolerance, 150 Ω rdiff at 5 mA, same SOD123F package | Higher voltage drift under load; suitable only for non-critical biasing | Select when cost sensitivity outweighs regulation accuracy requirements |
| MMSZ5235B-TP | ±5 % tolerance, 100 Ω rdiff, SOD-123 package (identical mechanical outline) | No AEC-Q101 qualification; lacks optimized leakage profile for noise reduction | Use in consumer-grade portable electronics where automotive reliability not required |
Compared with BZT5250H-B6V8-QX, BZT52C6V8-Q trades regulation precision for lower cost, while MMSZ5235B-TP offers identical form factor but omits automotive qualification and noise-optimized leakage behavior-making the original part uniquely suited for safety-aware, low-noise automotive sensing nodes.
Availability
BZT5250H-B6V8-QX is available at Aetrix Electronics and suitable for automotive ECU reference design, portable gas sensor biasing, and industrial IoT node voltage clamping requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZT5250H-B6V8-QX 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 components and advanced packaging technologies.
The BZT5250H-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode product line, engineered specifically for low-current, low-noise voltage regulation in automotive and portable electronics where precision, stability, and qualification integrity are mandatory.
FAQ
What is the maximum reverse voltage before breakdown for BZT5250H-B6V8-QX?
The device exhibits sharp Zener breakdown between 6.66 V and 6.94 V at 50 µA test current, with no defined "maximum reverse voltage before breakdown" - it is designed to operate continuously in controlled reverse conduction. Below 5.1 V, reverse current remains ≤ 0.1 µA, confirming effective blocking behavior in pre-breakdown region.
Can BZT5250H-B6V8-QX be used in place of a 6.8 V TL431 shunt regulator?
No - the BZT5250H-B6V8-QX is a two-terminal passive Zener diode requiring external current limiting, whereas the TL431 is a three-terminal active shunt regulator with adjustable output and higher accuracy. This part serves only fixed-voltage reference or clamp roles, not programmable feedback applications.
Does the "QX" suffix indicate tape-and-reel packaging or a specific revision?
The "QX" suffix denotes Nexperia's standard automotive-grade ordering variant with AEC-Q101 qualification, RoHS compliance, and moisture sensitivity level 1 (MSL1) - not packaging format. Tape-and-reel is default for SOD123F; bulk or cut-tape options require separate order codes.
How does the intentional leakage current optimization affect long-term reliability?
The minor leakage increase is process-controlled and verified per AN90031 to enhance switching noise performance without compromising MTTF - accelerated life testing shows no degradation in Zener voltage stability or failure rate over 1000 hours at 125 °C junction temperature.
BZT5250H-B6V8-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZT5250H-Q
- Package/Case:
- SOD-123F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 6.8 V
- Tolerance:
- ±2%
- Power - Max:
- 375 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123F
BZT5250H-B6V8-QX FAQ
1.How can I place an order for BZT5250H-B6V8-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT5250H-B6V8-QX 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 BZT5250H-B6V8-QX reliable?
The price and inventory of BZT5250H-B6V8-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT5250H-B6V8-QX is usually 5 days.
3.What payment methods are accepted for BZT5250H-B6V8-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT5250H-B6V8-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT5250H-B6V8-QX?
BZT5250H-B6V8-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT5250H-B6V8-QX 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 BZT5250H-B6V8-QX?
For technical support, including BZT5250H-B6V8-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT5250H-B6V8-QX requirements.
6.How does Aetrix verify that BZT5250H-B6V8-QX is sourced from the original manufacturer or authorized distributors?
All BZT5250H-B6V8-QX 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 BZT5250H-B6V8-QX meets industry standards.
7.What is the process for return or replacement of BZT5250H-B6V8-QX?
All BZT5250H-B6V8-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZT5250H-B6V8-QX, 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 BZT5250H-B6V8-QX part is unused and in its original packaging.
Return procedure for BZT5250H-B6V8-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT5250H-B6V8-QX Tags
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