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Nexperia USA Inc. BZT5250H-B2V4X
- Part No.:
- BZT5250H-B2V4X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT5250H-B2V4X.pdf
- Description:
- DIODE ZENER 2.4V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:7,252
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Product details
Overview
BZT5250H-B2V4X from Nexperia is a low-current Zener diode in SOD123F package, designed for precision voltage regulation at 2.4 V nominal with ±2 % tolerance and specified at 50 µA test current. It delivers 830 mW total power dissipation at 25 °C ambient, features 200 mA maximum forward current, and supports low-bias, battery-powered applications including sensor biasing and reference voltage generation.
For engineers reviewing the BZT5250H-B2V4X datasheet, BZT5250H-B2V4X pinout, BZT5250H-B2V4X application, or BZT5250H-B2V4X equivalent, this page provides verified electrical characteristics, thermal resistance data (150 K/W junction-to-solder point), differential resistance (≤600 Ω at 50 µA), reverse leakage behavior, and real-world use context for portable and space-constrained designs.
Technical Context
This Zener diode operates as a two-terminal shunt voltage regulator, maintaining stable 2.4 V output across load variations using reverse-biased breakdown conduction. Its low 50 µA test current enables operation in ultra-low-power circuits where quiescent current must remain below 100 µA.
The device exhibits a negative temperature coefficient of −3.5 mV/K and 200 pF capacitance at 0 V reverse bias, making it suitable for noise-sensitive analog references. Its SOD123F package provides 70 K/W junction-to-cathode solder point thermal resistance, enabling reliable thermal performance on standard FR4 PCBs with 1 cm² cathode pad.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.35 V to 2.45 V at IZ = 50 µA - tight ±2 % tolerance ensures accurate reference in low-current bias networks |
| Differential Resistance (rdiff) | ≤600 Ω at IZ = 50 µA - low dynamic impedance maintains regulation stability under small signal load shifts |
| Forward Voltage (VF) | ≤0.9 V at IF = 10 mA - enables efficient anode-side clamping and low-loss forward conduction paths |
| Total Power Dissipation (Ptot) | 830 mW at Tamb ≤ 25 °C with 1 cm² cathode pad - defines maximum continuous DC power handling in standard layout |
| Reverse Current (IR) | ≤2.0 µA at VR = 1.0 V - ultra-low leakage preserves battery life in always-on monitoring circuits |
| Junction Temperature (Tj) | 150 °C maximum - sets upper thermal limit for sustained operation in enclosed or high-ambient environments |
| Thermal Resistance (Rth(j-sp)) | 150 K/W junction-to-solder point - quantifies thermal path efficiency from die to PCB copper, critical for thermal design margin |
Pinout & Package
SOD123F surface-mount plastic package: 2.6 mm × 1.6 mm × 1.1 mm body, flat lead configuration with cathode marked by bar. Mounting requires reflow only; footprint per Figure 10 specifies 2.8 mm × 1.2 mm solder land with 1.1 mm pad spacing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to regulated output node; marking bar identifies this terminal; carries reverse breakdown current during regulation |
| 2 (A) | Anode | Connected to ground or lower-potential rail; completes Zener conduction path; handles forward current up to 10 mA |
Key Features
| Feature | Design Value |
|---|---|
| Low test current specification | Rated at 50 µA - enables use in microamp-level bias chains without compromising regulation accuracy |
| Tight voltage tolerance | ±2 % (B-series) - reduces need for post-regulation trimming in precision analog sensor interfaces |
| Optimized leakage profile | Controlled IR ≤ 2.0 µA at 1.0 V - minimizes standby drain in coin-cell–powered IoT endpoints |
| Fast switching response | Intentional minor leakage rise per AN90031 - improves transient suppression speed in ESD-coupled protection nodes |
| Thermally robust mounting | 150 K/W Rth(j-sp) with standard pad - allows direct thermal coupling to PCB copper without thermal vias in cost-sensitive designs |
Applications
| Portable Sensor Biasing | Low-Power Reference Generation |
|---|---|
Use Scenario: Providing stable excitation voltage to MEMS pressure sensors in wearable health monitors powered by CR2032 cells. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to deliver fixed 2.4 V reference independent of battery voltage decay from 3.0 V to 2.0 V. Use Value: Enables consistent sensor output scaling over full battery discharge cycle while drawing <50 µA total quiescent current. |
Use Scenario: Generating a precision 2.4 V reference for ADC input scaling in battery-operated environmental data loggers. IC Role / Device Role / Timing Role: Shunt regulator establishing known voltage node for ratiometric measurement against internal ADC reference. Use Value: Delivers ±2 % initial accuracy and −3.5 mV/K TC, reducing calibration frequency and supporting 12-bit effective resolution. |
| ESD-Suppressed Signal Clamping | Microcontroller Reset Conditioning |
Use Scenario: Protecting UART TX lines in industrial edge nodes exposed to 8 kV contact ESD per IEC 61000-4-2. IC Role / Device Role / Timing Role: Low-capacitance (200 pF) Zener placed between signal line and ground to clamp transients without distorting 115.2 kbps data edges. Use Value: Fast turn-on due to optimized leakage profile limits overshoot to <3.3 V, preventing MCU input latch-up. |
Use Scenario: Stabilizing reset line voltage during brown-out conditions in ARM Cortex-M0+ based smart meters. IC Role / Device Role / Timing Role: Zener referenced to VDD to hold reset active until supply exceeds 2.4 V ±2 % with hysteresis via external resistor divider. Use Value: Ensures deterministic reset assertion timing across temperature (−40 °C to +85 °C) with no external IC required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52-C2V4 | ±5 % tolerance, higher 5 µA test current, 100 Ω rdiff at 5 mA | Less precise but more stable under moderate load; suited for non-critical biasing | Select when cost sensitivity outweighs voltage accuracy requirements |
| MMSZ4685 | 2.4 V ±5 %, SOD-123 package, 500 mW Ptot, 100 Ω rdiff at 5 mA | Lower power rating and higher leakage (>5 µA at 1 V); less suitable for sub-100 µA systems | Choose only if legacy footprint compatibility is mandatory and thermal margin permits reduced Ptot |
Compared with BZT52-C2V4 and MMSZ4685, the BZT5250H-B2V4X offers superior voltage accuracy (±2 % vs. ±5 %), lower test current (50 µA vs. 5 mA), and higher power capability (830 mW vs. 500 mW), making it optimal for modern ultra-low-power, high-precision analog subsystems.
Availability
BZT5250H-B2V4X is available at Aetrix Electronics and suitable for portable sensor biasing, low-power reference generation, ESD-suppressed signal clamping, and microcontroller reset conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZT5250H-B2V4X 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 specializing in high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified and energy-efficient components.
The BZT5250H series belongs to Nexperia's low-current Zener diode product line, engineered specifically for battery-powered and space-constrained applications demanding precision regulation at microamp bias levels.
FAQ
What is the maximum reverse voltage this Zener can regulate before breakdown?
The BZT5250H-B2V4X has a nominal Zener voltage of 2.4 V with a guaranteed range of 2.35 V to 2.45 V at 50 µA test current. Its absolute maximum reverse voltage is not defined - instead, it operates within its specified VZ tolerance band under controlled current. Exceeding 2.45 V without current limiting risks thermal runaway due to uncontrolled power dissipation.
Can this diode be used in forward conduction mode like a standard rectifier?
Yes - the BZT5250H-B2V4X has a forward voltage ≤0.9 V at 10 mA and supports up to 200 mA peak forward current. However, its primary design intent is reverse-biased regulation; forward use is limited to low-current signal clamping or level-shifting where its 0.9 V VF and 375 mW pulse-rated forward power are sufficient.
How does the SOD123F package affect thermal performance compared to SOD-123?
The SOD123F package features a flatter profile and optimized thermal pad geometry, achieving 150 K/W junction-to-solder point resistance versus ~200 K/W for standard SOD-123. This 25 % improvement enables higher continuous power handling on identical PCB layouts, especially with the recommended 1 cm² cathode copper area.
Is this part suitable for automotive applications?
No - the BZT5250H-B2V4X is not AEC-Q200 qualified and lacks automotive-grade screening, temperature validation beyond −55 °C to +150 °C, or PPAP documentation. Nexperia explicitly states non-automotive qualification in the legal disclaimers; use in automotive systems requires formal qualification or selection of an AEC-Q200-compliant alternative.
BZT5250H-B2V4X 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):
- 2.4 V
- Tolerance:
- ±2%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 2 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-B2V4X FAQ
1.How can I place an order for BZT5250H-B2V4X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT5250H-B2V4X 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-B2V4X reliable?
The price and inventory of BZT5250H-B2V4X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT5250H-B2V4X is usually 5 days.
3.What payment methods are accepted for BZT5250H-B2V4X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT5250H-B2V4X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT5250H-B2V4X?
BZT5250H-B2V4X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT5250H-B2V4X 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-B2V4X?
For technical support, including BZT5250H-B2V4X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT5250H-B2V4X requirements.
6.How does Aetrix verify that BZT5250H-B2V4X is sourced from the original manufacturer or authorized distributors?
All BZT5250H-B2V4X 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-B2V4X meets industry standards.
7.What is the process for return or replacement of BZT5250H-B2V4X?
All BZT5250H-B2V4X units undergo pre-shipment inspection (PSI). If there is an issue with BZT5250H-B2V4X, 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-B2V4X part is unused and in its original packaging.
Return procedure for BZT5250H-B2V4X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT5250H-B2V4X Tags
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