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Nexperia USA Inc. BZT5250H-B2V2X
- Part No.:
- BZT5250H-B2V2X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT5250H-B2V2X.pdf
- Description:
- DIODE ZENER 2.2V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:5,023
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Product details
Overview
BZT5250H-B2V2X from Nexperia is a low-current Zener diode in SOD123F package, designed for precision voltage regulation at 2.2 V nominal with ±2 % tolerance and specified at 50 μA test current. It delivers stable reference voltage in portable battery-powered systems, low-power sensor interfaces, and microcontroller reset circuits where minimal bias current and low leakage are critical.
For engineers reviewing the BZT5250H-B2V2X datasheet, BZT5250H-B2V2X pinout, BZT5250H-B2V2X application, or BZT5250H-B2V2X equivalent, this page provides verified Zener voltage, differential resistance, thermal resistance, reverse leakage behavior, and SOD123F mounting details essential for low-power analog design and voltage reference selection.
Technical Context
This Zener operates in reverse breakdown mode with a nominal working voltage of 2.2 V at IZ = 50 μA, exhibiting a typical differential resistance of 600 Ω at that current and dropping to 100 Ω at 1 mA. Its temperature coefficient is −3.5 mV/K, indicating predictable negative drift over temperature.
The device features intentional minor leakage optimization per AN90031 for fast switching and noise reduction, and is rated for 830 mW total power dissipation on a 1 cm² cathode pad - significantly higher than standard SOD-123 ratings due to enhanced thermal design.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.15 V to 2.25 V at IZ = 50 μA - tight ±2 % tolerance enables accurate low-voltage reference without trimming. |
| Differential Resistance (rdiff) | 600 Ω max at IZ = 50 μA; 100 Ω max at IZ = 1 mA - ensures stable regulation under varying load conditions in low-current rails. |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA - supports use as clamp or protection diode in bidirectional signal paths. |
| Total Power Dissipation (Ptot) | 830 mW at Tamb ≤ 25 °C with 1 cm² cathode pad - enables higher continuous operation than standard SOD123 devices. |
| Junction-to-Ambient Rth | 330 K/W in free air - confirms suitability for thermally constrained PCB layouts without forced cooling. |
| Reverse Leakage (IR) | 1.0 μA max at VR = 2.0 V - ultra-low leakage preserves battery life in always-on monitoring circuits. |
| Capacitance (Cd) | 210 pF at VR = 0 V, f = 1 MHz - low capacitance minimizes signal distortion in high-frequency reference or clamping applications. |
Pinout & Package
Package: SOD123F - surface-mount plastic package measuring 2.6 mm × 1.6 mm × 1.1 mm, optimized for automated assembly and thermal performance with extended cathode pad area.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Marked side) | Cathode (K) | Connected to regulated output node; marking bar identifies polarity for correct orientation during placement. |
| 2 | Anode (A) | Connected to ground or lower-potential rail; forms reverse-biased junction enabling Zener breakdown conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Low-test-current specification | Rated at IZ = 50 μA - enables stable regulation in nanoamp-level standby circuits without loading sensitive sources. |
| Tight voltage tolerance | ±2 % (B-series) - eliminates need for post-assembly calibration in precision 2.2 V reference designs. |
| Optimized leakage profile | Intentional minor rise per AN90031 - reduces switching transients and broadband noise in timing and sensing nodes. |
| Enhanced thermal pad layout | 1 cm² cathode mounting pad support - improves power handling by 122 % vs. standard SOD123 (375 mW → 830 mW). |
Applications
| Portable Sensor Reference | Microcontroller Reset Circuit |
|---|---|
|
Use Scenario: Providing stable 2.2 V reference for analog front-end of battery-powered environmental sensors (e.g., humidity, temperature ICs) operating in sleep mode. IC Role / Device Role / Timing Role: Zener voltage reference source establishing precise threshold for ADC input scaling and supply monitoring. Use Value: Ultra-low 1.0 μA leakage at 2.0 V ensures <1 nA additional drain on coin-cell batteries during multi-year deployments. |
Use Scenario: Generating clean, noise-immune reset signal for ARM Cortex-M0+ MCUs in wearables with intermittent wake cycles. IC Role / Device Role / Timing Role: Reverse-biased Zener clamping regulator feeding RC delay network into reset pin. Use Value: −3.5 mV/K temperature coefficient and 600 Ω rdiff ensure reset threshold remains within ±15 mV across −40 °C to +85 °C. |
| Low-Power LDO Feedback Divider | ESD-Sensitive Signal Clamp |
|
Use Scenario: Setting output voltage of 3.3 V low-quiescent LDO using resistive divider with top resistor tied to 2.2 V Zener reference. IC Role / Device Role / Timing Role: Precision shunt reference replacing bandgap IC in space-constrained power management subsystems. Use Value: 2.2 V nominal with ±2 % tolerance allows direct use without external trimming, reducing BOM count and layout area. |
Use Scenario: Protecting I²C lines in IoT edge nodes exposed to electrostatic discharge in unshielded enclosures. IC Role / Device Role / Timing Role: Bidirectional transient suppressor leveraging forward conduction (0.9 V) and reverse Zener action (2.2 V). Use Value: 210 pF capacitance avoids signal integrity degradation on 400 kHz bus while clamping ESD pulses to safe levels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52-B2V2 | Same SOD123F package but ±5 % tolerance (C-series), 375 mW Ptot, no leakage optimization. | Limited to non-critical biasing; unsuitable for precision reset or sensor references requiring tight VZ. | Select when cost sensitivity outweighs accuracy and thermal headroom requirements. |
| MMSZ4685 | 2.2 V Zener in SOD-123, ±5 %, 500 mW rating, rdiff = 100 Ω @ 20 mA - not specified at 50 μA. | Requires higher test current; exhibits greater VZ drift below 100 μA, limiting use in ultra-low-power sleep modes. | Prefer only if legacy compatibility or distributor stock availability drives selection over performance. |
Compared with BZT5250H-B2V2X, BZT52-B2V2 sacrifices 2.5× tighter tolerance and 2.2× higher power derating, while MMSZ4685 lacks low-current characterization and thermal enhancement - making the BZT5250H-B2V2X uniquely suited for battery-critical, precision-referenced embedded systems.
Availability
BZT5250H-B2V2X is available at Aetrix Electronics and suitable for portable sensor reference, microcontroller reset circuit, and low-power LDO feedback divider applications requiring stable component supply, long-lifecycle assurance, and traceable sourcing for industrial and medical-grade designs.
Supply support for BZT5250H-B2V2X 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 logic, discrete, and MOSFET solutions, with leadership in automotive-qualified and energy-efficient components.
The BZT5250H series belongs to Nexperia's low-current Zener portfolio, engineered specifically for battery-constrained, noise-sensitive applications demanding stable voltage references at sub-100 μA operating points.
FAQ
What is the guaranteed Zener voltage range for BZT5250H-B2V2X at 50 μA?
The guaranteed Zener voltage is 2.15 V to 2.25 V at IZ = 50 μA and Tj = 25 °C, reflecting its ±2 % B-series tolerance. This range is validated per Table 8 of the official Nexperia datasheet Rev. 1 (July 2024) and applies under standard mounting conditions with defined thermal pad area.
Can BZT5250H-B2V2X be used in forward conduction mode?
Yes - it exhibits a maximum forward voltage of 0.9 V at IF = 10 mA, making it suitable for low-drop clamping or polarity protection. However, its primary design intent and characterization focus remain reverse-bias Zener regulation, and forward characteristics are secondary specifications derived from diode physics rather than optimized performance parameters.
How does the SOD123F package improve thermal performance over standard SOD-123?
The SOD123F variant uses an enlarged cathode pad footprint (1 cm² recommended) that reduces junction-to-solder-point thermal resistance to 70 K/W and enables 830 mW total power dissipation - 122 % higher than the 375 mW limit of conventional SOD-123 packages under identical board conditions.
Is BZT5250H-B2V2X automotive qualified?
No - this part is not automotive qualified. The Nexperia datasheet explicitly states "Non-automotive qualified products" in Section 14 and confirms no AEC-Q200 qualification or automotive-specific testing has been performed. It is intended for industrial, consumer, and medical applications meeting commercial-grade reliability standards.
BZT5250H-B2V2X 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):
- 2.2 V
- Tolerance:
- ±2%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 4 µA @ 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-B2V2X FAQ
1.How can I place an order for BZT5250H-B2V2X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT5250H-B2V2X 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-B2V2X reliable?
The price and inventory of BZT5250H-B2V2X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT5250H-B2V2X is usually 5 days.
3.What payment methods are accepted for BZT5250H-B2V2X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT5250H-B2V2X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT5250H-B2V2X?
BZT5250H-B2V2X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT5250H-B2V2X 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-B2V2X?
For technical support, including BZT5250H-B2V2X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT5250H-B2V2X requirements.
6.How does Aetrix verify that BZT5250H-B2V2X is sourced from the original manufacturer or authorized distributors?
All BZT5250H-B2V2X 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-B2V2X meets industry standards.
7.What is the process for return or replacement of BZT5250H-B2V2X?
All BZT5250H-B2V2X units undergo pre-shipment inspection (PSI). If there is an issue with BZT5250H-B2V2X, 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-B2V2X part is unused and in its original packaging.
Return procedure for BZT5250H-B2V2X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT5250H-B2V2X Tags
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