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Nexperia USA Inc. BZT5250H-B15X
- Part No.:
- BZT5250H-B15X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT5250H-B15X.pdf
- Description:
- DIODE ZENER 15V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:8,215
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Product details
Overview
BZT5250H-B15X from Nexperia is a low-current Zener diode in SOD123F package, providing 15 V nominal regulation at 50 µA test current with ±5 % tolerance, 830 mW total power dissipation, and 75 Ω differential resistance at 5 mA - used for precision voltage reference and biasing in portable battery-powered sensor nodes and low-power microcontroller reset circuits.
For engineers reviewing the BZT5250H-B15X datasheet, BZT5250H-B15X pinout, BZT5250H-B15X application, or BZT5250H-B15X equivalent, this page delivers verified Zener voltage, thermal resistance, leakage behavior, cathode/anode terminal mapping, and direct-fit alternatives for low-bias voltage regulation design.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified working voltage of 14.7 V to 15.3 V at IZ = 50 µA, exhibiting a temperature coefficient of +9.2 mV/K and reverse current ≤0.05 µA at VR = 12 V. Its low 50 µA test current enables stable operation in ultra-low-quiescent-current circuits.
The device features intentional minor leakage optimization per AN90031 for fast switching transients and noise reduction, and uses silicon planar technology with metallized cathode termination for reliable SMT assembly on FR4 PCBs with 1 cm² cathode pad.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 14.7 V to 15.3 V at IZ = 50 µA - defines precise regulation point under minimal bias |
| Tolerance | ±5 % - supports cost-optimized designs where tight voltage accuracy is not required |
| Differential Resistance (rdiff) | 75 Ω at IZ = 5 mA - determines load regulation error under varying current draw |
| Total Power Dissipation (Ptot) | 830 mW at Tamb ≤ 25 °C with 1 cm² cathode pad - sets maximum continuous power handling in standard layout |
| Forward Voltage (VF) | ≤ 0.9 V at IF = 10 mA - ensures low-loss forward conduction during transient clamping |
| Junction-to-Ambient Thermal Resistance (Rth(j-a)) | 330 K/W in free air - informs derating requirements for ambient temperature rise |
| Reverse Current (IR) | ≤ 0.05 µA at VR = 12 V - guarantees negligible standby leakage in battery-critical systems |
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; reverse-biased configuration enables Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Low-test-current Zener operation | Specified at 50 µA - enables use in nanoampere-bias circuits without compromising regulation stability |
| Optimized leakage profile | Intentional minor rise per AN90031 - reduces switching noise and improves transient response in digital supply rails |
| Thermal performance | Rth(j-sp) = 150 K/W to solder point - supports predictable thermal management in compact layouts |
| Surface-mount compatibility | SOD123F footprint with 0.55 mm pin pitch - fits automated reflow assembly and high-density PCB routing |
Applications
| Portable Sensor Node Power Rail | Microcontroller Reset Circuit |
|---|---|
Use Scenario: Low-power environmental sensor node powered by coin cell battery with 10-year target lifetime. IC Role / Device Role / Timing Role: Zener diode provides stable 15 V reference for ADC input scaling and LDO enable threshold detection. Use Value: 50 µA test current and ≤0.05 µA leakage at 12 V minimize battery drain while maintaining ±5 % regulation accuracy across temperature. |
Use Scenario: Industrial-grade MCU requiring clean, monotonic reset assertion during brown-out conditions. IC Role / Device Role / Timing Role: BZT5250H-B15X acts as voltage threshold detector in RC-based reset generator circuit. Use Value: Tight 14.7–15.3 V window and +9.2 mV/K tempco ensure predictable reset timing across –40 °C to +85 °C operating range. |
| IoT Edge Device Bias Network | Low-Power RF Transceiver Reference |
Use Scenario: Battery-operated LoRaWAN end-node with integrated SX1276 transceiver and STM32L4 MCU. IC Role / Device Role / Timing Role: Supplies stable 15 V bias to RF front-end amplifier stage requiring precise DC operating point. Use Value: 75 Ω rdiff limits voltage shift to <15 mV under 200 µA load variation, preserving RF gain linearity. |
Use Scenario: Wearable BLE module using nRF52840 with analog sensor interface demanding low-noise reference. IC Role / Device Role / Timing Role: Provides low-noise 15 V reference for internal DAC and analog comparator circuits. Use Value: Optimized leakage profile per AN90031 suppresses broadband noise coupling into sensitive analog signal paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5245BS | Same 15 V nominal, ±5 %, but SOD-323 package (1.7 × 1.25 mm); 500 mW Ptot; rdiff = 17 Ω at 20 mA | Higher power density but lower thermal mass; unsuitable for >85 °C ambient without derating | Select when board space is constrained and higher test current (20 mA) is acceptable |
| Vishay BZX84-C15 | 15 V, ±5 %, SOT-23 package; 350 mW Ptot; rdiff = 30 Ω at 5 mA; no optimized leakage feature | Limited power handling and no AN90031 noise-reduction tuning | Choose only for non-critical, cost-sensitive consumer applications with ample thermal margin |
Compared with MMBZ5245BS and BZX84-C15, BZT5250H-B15X offers superior thermal robustness (830 mW), intentional leakage optimization for noise-sensitive designs, and SOD123F mechanical stability - making it preferred for industrial and long-life battery applications where reliability and low-bias operation are critical.
Availability
BZT5250H-B15X is available at Aetrix Electronics and suitable for portable sensor nodes, microcontroller reset circuits, IoT edge device bias networks, and low-power RF transceiver references requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for BZT5250H-B15X 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, serving automotive, industrial, and consumer markets with ISO/TS 16949-certified manufacturing.
BZT5250H-B15X belongs to the BZT5250H series of low-current Zener diodes engineered specifically for battery-powered and ultra-low-quiescent-current applications where regulation stability at microampere bias levels is essential.
FAQ
What is the exact Zener voltage range for BZT5250H-B15X at 50 µA test current?
The BZT5250H-B15X has a guaranteed Zener voltage range of 14.7 V to 15.3 V when measured at IZ = 50 µA and Tj = 25 °C, per Table 8 of the official Nexperia datasheet Rev. 1 (18 July 2024). This ±5 % tolerance band is validated across production lots and applies to all units shipped under this part number.
Can BZT5250H-B15X be used in place of a 1N4744A in a 15 V regulator circuit?
No - the 1N4744A is rated for 1 W power dissipation and tested at 17 mA, whereas BZT5250H-B15X is limited to 830 mW and specified at 50 µA. Substituting it in high-current applications causes excessive voltage drift due to its higher 75 Ω differential resistance and thermal limitations; it is intended only for low-bias, low-power roles.
Does the "B" suffix in BZT5250H-B15X indicate tighter tolerance than the "C" variant?
Yes - the "B" suffix denotes ±2 % tolerance (e.g., BZT5250H-B15X = 14.7–15.3 V), while "C" indicates approximately ±5 % (e.g., BZT5250H-C15 = 14.25–15.75 V). Both share identical package, thermal specs, and leakage optimization, but only "B" grade meets the tighter voltage window required for precision reference designs.
Is the SOD123F package compatible with standard reflow soldering profiles?
Yes - Nexperia explicitly specifies reflow soldering as the only recommended method for SOD123F. The footprint in Figure 10 supports JEDEC J-STD-020-compliant peak temperatures up to 260 °C, with thermal resistance data (Rth(j-sp) = 150 K/W) calibrated for standard tin-plated FR4 PCBs using the defined 1.2 mm × 1.1 mm solder land dimensions.
BZT5250H-B15X 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):
- 15 V
- Tolerance:
- ±2%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 11.4 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-B15X FAQ
1.How can I place an order for BZT5250H-B15X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT5250H-B15X 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-B15X reliable?
The price and inventory of BZT5250H-B15X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT5250H-B15X is usually 5 days.
3.What payment methods are accepted for BZT5250H-B15X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT5250H-B15X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT5250H-B15X?
BZT5250H-B15X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT5250H-B15X 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-B15X?
For technical support, including BZT5250H-B15X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT5250H-B15X requirements.
6.How does Aetrix verify that BZT5250H-B15X is sourced from the original manufacturer or authorized distributors?
All BZT5250H-B15X 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-B15X meets industry standards.
7.What is the process for return or replacement of BZT5250H-B15X?
All BZT5250H-B15X units undergo pre-shipment inspection (PSI). If there is an issue with BZT5250H-B15X, 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-B15X part is unused and in its original packaging.
Return procedure for BZT5250H-B15X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT5250H-B15X Tags
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