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Nexperia USA Inc. BZT5250H-B6V8X
- Part No.:
- BZT5250H-B6V8X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT5250H-B6V8X.pdf
- Description:
- DIODE ZENER 6.8V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:4,794
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Product details
Overview
BZT5250H-B6V8X from Nexperia is a low-current Zener diode in SOD123F package, providing precise 6.66 V to 6.94 V nominal regulation at IZ = 50 µA, with ±2 % tolerance (B-series), 80 Ω differential resistance at 5 mA, and 1.2 mV/K temperature coefficient - optimized for voltage reference and biasing in portable battery-powered sensor nodes and low-power microcontroller reset circuits.
For engineers reviewing the BZT5250H-B6V8X datasheet, BZT5250H-B6V8X pinout, BZT5250H-B6V8X application, or BZT5250H-B6V8X equivalent, this page delivers verified Zener voltage, thermal resistance, leakage behavior, cathode/anode terminal mapping, and direct-fit alternatives for low-bias analog reference design.
Technical Context
This Zener operates in reverse breakdown mode with specified regulation at ultra-low test current (50 µA), enabling stable reference generation in micropower systems where quiescent current must remain below 100 µA. Its intentional minor leakage rise improves switching speed and reduces noise in feedback paths.
The device exhibits a positive temperature coefficient of +1.2 mV/K near 6.8 V, minimizing drift across -55 °C to +150 °C ambient range; thermal resistance from junction to solder point is 150 K/W on standard FR4 PCB, supporting reliable operation under intermittent load transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 6.66 V to 6.94 V at IZ = 50 µA - tight regulation window enables accurate 6.8 V reference without trimming |
| Tolerance | ±2 % (B-series) - supports high-precision biasing in analog front-ends and ADC reference dividers |
| Differential Resistance rdiff | 80 Ω at IZ = 5 mA - low impedance ensures minimal voltage shift under small load variations |
| Temperature Coefficient SZ | +1.2 mV/K - predictable positive drift simplifies compensation in wide-temperature industrial sensors |
| Forward Voltage VF | ≤ 0.9 V at IF = 10 mA - low conduction loss when used bidirectionally or as clamp |
| Total Power Dissipation Ptot | 830 mW at Tamb ≤ 25 °C - sufficient headroom for short-duration surge events in power-rail monitoring |
| Junction-to-Ambient Rth(j-a) | 330 K/W in free air - defines derating curve for ambient-limited designs without heatsinking |
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 - critical for correct polarity in shunt regulator configuration |
| 2 | Anode (A) | Connected to ground or lower-potential rail; forms reverse-biased junction enabling Zener breakdown at defined voltage |
Key Features
| Feature | Design Value |
|---|---|
| Low-test-current regulation | Specified at 50 µA - enables use in nanoampere-bias circuits like RTC backup supplies and wake-up comparators |
| Optimized leakage profile | Intentional minor IR rise per AN90031 - reduces switching noise and improves transient response in feedback loops |
| Thermal stability | Rth(j-sp) = 150 K/W - supports predictable derating on standard PCB copper pads without thermal vias |
| Small-form-factor SMD | SOD123F footprint - compatible with 0805-class pick-and-place and reflow processes, saving board space in wearables |
Applications
| Microcontroller Reset Circuit | Portable Sensor Bias Reference |
|---|---|
Use Scenario: Provides clean, stable 6.8 V reference to enable reset ICs (e.g., MAX809) during brown-out conditions in battery-operated edge nodes. IC Role / Device Role / Timing Role: Shunt Zener regulator establishing threshold voltage for reset assertion logic. Use Value: ±2 % tolerance and +1.2 mV/K TC ensure reset threshold remains within 30 mV drift over –40 °C to +85 °C operating range. |
Use Scenario: Supplies precision bias to op-amp input stages in low-power gas sensors powered by coin cells. IC Role / Device Role / Timing Role: Low-current voltage reference source for signal conditioning circuitry. Use Value: 50 µA test current matches typical sensor amplifier quiescent draw, eliminating need for additional current sources. |
| ADC Reference Divider | ESD-Clamped Signal Line |
Use Scenario: Forms upper leg of resistor divider feeding internal reference to 12-bit SAR ADC in energy-harvesting IoT transceivers. IC Role / Device Role / Timing Role: Stable voltage node defining full-scale input range for analog-to-digital conversion. Use Value: 80 Ω rdiff limits reference error to <1 LSB under 10 µA load variation from ADC sampling current. |
Use Scenario: Placed across UART TX/RX lines in medical telemetry modules to suppress ESD transients while preserving signal integrity. IC Role / Device Role / Timing Role: Bidirectional clamping diode leveraging low VF (≤0.9 V) and controlled Zener knee. Use Value: Fast leakage-optimized structure reduces clamping delay to <1 ns, preventing data corruption during IEC 61000-4-2 contact discharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C6V8 | Same 6.8 V nominal, ±5 % tolerance (C-series), higher rdiff (100 Ω), SOD323 package (smaller, 1.3 mm × 0.85 mm) | Limited to cost-sensitive, non-critical references where ±5 % is acceptable and board space is constrained | Select when footprint reduction outweighs precision needs and thermal performance is secondary |
| MMSZ5236B | 6.8 V nominal, ±5 %, 500 mW Ptot, SOD123 package (same outline but no flat leads), rdiff = 10 Ω at 20 mA | Better regulation under higher loads but requires ≥1 mA test current - unsuitable for sub-100 µA systems | Choose only if circuit can supply ≥1 mA Zener current and lower dynamic impedance is prioritized over ultra-low bias |
Compared with BZT5250H-B6V8X, BZX84-C6V8 trades precision for size and cost, while MMSZ5236B delivers tighter regulation at higher current but fails to meet the 50 µA low-bias requirement essential for battery longevity in always-on sensors.
Availability
BZT5250H-B6V8X is available at Aetrix Electronics and suitable for portable sensor biasing, microcontroller reset circuits, ADC reference dividers, and ESD-clamped signal lines requiring stable component supply with guaranteed long-term traceability.
Supply support for BZT5250H-B6V8X 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 BZT5250H series belongs to Nexperia's low-current Zener portfolio, engineered specifically for precision voltage referencing in battery-constrained and thermally sensitive applications - not general-purpose regulation.
FAQ
What is the maximum reverse current (IR) at 6.0 V for BZT5250H-B6V8X?
At VR = 6.0 V and Tamb = 25 °C, the typical reverse current is 0.1 µA, with a maximum of 0.5 µA per datasheet Figure 5. This ultra-low leakage ensures minimal battery drain in always-on monitoring circuits and preserves accuracy in high-impedance reference networks.
Can BZT5250H-B6V8X be used in place of a 6.8 V TL431 shunt regulator?
No - the BZT5250H-B6V8X is a passive two-terminal Zener diode without adjustable feedback or active regulation. It lacks the 2.5 V reference, error amplifier, and output drive capability of the TL431. It serves only as a fixed-voltage shunt element, not a programmable precision regulator.
Is the SOD123F package compatible with standard SOD123 reflow footprints?
Yes - the SOD123F outline matches SOD123 mechanical dimensions (2.6 mm × 1.6 mm), and Nexperia provides dedicated reflow footprint data (Figure 10) with 1.2 mm × 1.1 mm solder lands. No layout modification is needed for existing SOD123 designs, though flat leads improve coplanarity.
Does BZT5250H-B6V8X meet AEC-Q200 for automotive use?
No - the BZT5250H-B6V8X is not automotive-qualified. Nexperia explicitly states in Section 14 that non-automotive qualified products are unsuitable for safety-critical or life-support systems. For automotive applications, select the AEC-Q200 qualified BZT5250HE6 series instead.
BZT5250H-B6V8X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZT5250H
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123F
BZT5250H-B6V8X FAQ
1.How can I place an order for BZT5250H-B6V8X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT5250H-B6V8X 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-B6V8X reliable?
The price and inventory of BZT5250H-B6V8X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT5250H-B6V8X is usually 5 days.
3.What payment methods are accepted for BZT5250H-B6V8X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT5250H-B6V8X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT5250H-B6V8X?
BZT5250H-B6V8X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT5250H-B6V8X 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-B6V8X?
For technical support, including BZT5250H-B6V8X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT5250H-B6V8X requirements.
6.How does Aetrix verify that BZT5250H-B6V8X is sourced from the original manufacturer or authorized distributors?
All BZT5250H-B6V8X 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-B6V8X meets industry standards.
7.What is the process for return or replacement of BZT5250H-B6V8X?
All BZT5250H-B6V8X units undergo pre-shipment inspection (PSI). If there is an issue with BZT5250H-B6V8X, 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-B6V8X part is unused and in its original packaging.
Return procedure for BZT5250H-B6V8X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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