My Inquiry
My Account
Nexperia USA Inc. BZT5250H-B22X
- Part No.:
- BZT5250H-B22X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT5250H-B22X.pdf
- Description:
- DIODE ZENER 22V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:7,154
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZT5250H-B22X from Nexperia is a low-current Zener diode in SOD123F package, providing precise 22 V ±5 % regulation at 50 µA test current, with 250 Ω differential resistance at 5 mA and 0.05 µA reverse leakage at rated voltage-designed for voltage reference and biasing in portable battery-powered sensor nodes and low-power microcontroller reset circuits.
For engineers reviewing the BZT5250H-B22X datasheet, BZT5250H-B22X pinout, BZT5250H-B22X application, or BZT5250H-B22X equivalent, key selection criteria include its 22 V nominal Zener voltage, ±5 % tolerance, 830 mW total power dissipation at 25 °C ambient, and intentional minor leakage optimization for fast switching and noise reduction per AN90031.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified Zener voltage of 21.6 V to 22.4 V at IZ = 50 µA, exhibiting a temperature coefficient of +16.7 mV/K and 20 pF capacitance at 0 V reverse bias. Its differential resistance drops to 250 Ω at 5 mA, enabling stable regulation under light-load conditions.
The device features two tolerance series (±2 % and ±5 %), with the B-series-including BZT5250H-B22X-optimized for low-bias applications via controlled leakage current rise, improving transient response and reducing high-frequency noise in precision analog front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 21.6 V to 22.4 V at IZ = 50 µA - defines regulation setpoint for low-current reference circuits |
| Tolerance | ±5 % - ensures predictable voltage accuracy across production lots without trimming |
| Differential Resistance (rdiff) | 250 Ω at IZ = 5 mA - determines load regulation error under small-signal variations |
| Reverse Leakage Current (IR) | 0.05 µA at VR = 22 V - enables ultra-low quiescent current in battery-critical designs |
| Total Power Dissipation (Ptot) | 830 mW at Tamb ≤ 25 °C on 1 cm² cathode pad - sets maximum continuous DC power handling in PCB-mounted operation |
| Forward Voltage (VF) | 0.9 V at IF = 10 mA - supports use as low-drop rectifier or clamp in dual-role circuits |
| Thermal Resistance (Rth(j-sp)) | 150 K/W - quantifies junction-to-solder-point thermal path for reliability modeling in compact layouts |
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; polarity marker aligns with PCB silkscreen bar for automated assembly verification |
| 2 | Anode (A) | Connected to ground or lower-potential rail; forms reverse-biased junction for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Low-test-current specification | Rated at 50 µA - enables accurate voltage setting in µA-level bias networks without loading error |
| Optimized leakage profile | Intentional minor IR rise per AN90031 - improves switching speed and reduces broadband noise in feedback paths |
| Small-form-factor SMD | SOD123F footprint - supports high-density PCB layouts and automated reflow assembly with IPC-compliant solder land pattern |
| Two-tolerance series | ±2 % (C-series) and ±5 % (B-series) - allows cost-performance trade-off without redesigning layout or bill of materials |
| Thermal robustness | 150 °C max junction temperature - ensures reliability in thermally constrained enclosures and industrial ambient ranges |
Applications
| Portable Sensor Node Reference | Microcontroller Reset Circuit |
|---|---|
Use Scenario: A battery-powered environmental sensor uses a 3.3 V LDO with external voltage reference for ADC calibration. IC Role / Device Role / Timing Role: BZT5250H-B22X serves as stable 22 V Zener reference for resistive divider feeding an op-amp buffer that generates 3.3 V reference. Use Value: Its 0.05 µA leakage avoids measurable battery drain over multi-year deployment while maintaining ±5 % regulation accuracy. |
Use Scenario: An industrial PLC controller requires reliable brown-out detection during AC line dips. IC Role / Device Role / Timing Role: BZT5250H-B22X provides threshold voltage to a comparator monitoring 24 V supply rail. Use Value: 250 Ω rdiff ensures minimal hysteresis shift across temperature, preserving reset window integrity from −40 °C to +85 °C. |
| Low-Power IoT Edge Node Bias | Signal-Level Clamping in RS-485 Interface |
Use Scenario: A LoRaWAN end-node uses discrete logic powered from a 3.3 V rail derived from a buck converter. IC Role / Device Role / Timing Role: BZT5250H-B22X establishes a stable bias point for a low-noise amplifier input stage. Use Value: Optimized leakage behavior per AN90031 suppresses 1/f noise in baseband signal chain, improving SNR by ≥3 dB. |
Use Scenario: A ruggedized serial interface board protects RS-485 transceivers against ESD-induced overvoltage. IC Role / Device Role / Timing Role: BZT5250H-B22X acts as bidirectional clamp between data lines and local ground. Use Value: 830 mW Ptot rating sustains 40 W non-repetitive surges (tp = 100 µs), meeting IEC 61000-4-2 Level 4 immunity. |
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 MMBZ5250BS | Same 22 V ±5 % rating but SOD-323 package (1.7 mm × 1.25 mm); 300 mW Ptot; no documented leakage optimization | Higher power density but lower surge capability; unsuitable for >100 µs transient clamping | Select when board space is critical and thermal margin exceeds 150 K/W |
| Vishay BZX84-C22 | SOT-23 package; ±5 % tolerance; 500 mW Ptot; 400 Ω rdiff at 5 mA; no AN90031 compliance | Larger rdiff increases load regulation error; lacks fast-switching leakage tuning | Select only for legacy compatibility where SOT-23 footprint is mandated |
Compared with MMBZ5250BS and BZX84-C22, BZT5250H-B22X delivers superior thermal performance (830 mW vs. ≤500 mW), lower dynamic impedance (250 Ω vs. ≥400 Ω), and application-specific leakage tuning-making it optimal for battery longevity and noise-sensitive analog references.
Availability
BZT5250H-B22X is available at Aetrix Electronics and suitable for portable sensor nodes, microcontroller reset circuits, low-power IoT edge nodes, and RS-485 signal clamping requiring stable component supply across extended temperature and lifecycle requirements.
Supply support for BZT5250H-B22X 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 delivering high-performance, reliable discrete, logic, and MOSFET devices with focus on efficiency, miniaturization, and automotive-grade quality.
The BZT5250H series belongs to Nexperia's low-current Zener regulator portfolio, engineered specifically for precision voltage reference and biasing in energy-constrained, noise-sensitive applications such as wearables and wireless sensors.
FAQ
What is the exact Zener voltage range for BZT5250H-B22X at 50 µA test current?
The BZT5250H-B22X has a guaranteed Zener voltage range of 21.6 V to 22.4 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 is confirmed for the B-series variant and applies under standard test conditions without derating.
Can BZT5250H-B22X be used in place of a 24 V Zener diode?
No-BZT5250H-B22X is strictly a 22 V device with 21.6 V to 22.4 V range; substituting it for a 24 V Zener would cause under-regulation in circuits relying on precise 24 V thresholding. The nearest Nexperia part in this series is BZT5250H-B24 (23.5 V–24.5 V), which shares identical SOD123F packaging and electrical architecture.
Does BZT5250H-B22X meet RoHS and REACH compliance?
Yes-BZT5250H-B22X is manufactured by Nexperia in accordance with EU RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Its SOD123F package contains no lead in solderable terminations, and full material declarations are available through Nexperia's Product Change Notification system and Aetrix Electronics' compliance portal.
Is thermal derating required above 25 °C ambient temperature?
Yes-total power dissipation must be linearly derated above 25 °C ambient. Per Table 5, Ptot decreases by 6.64 mW/°C above 25 °C, reaching zero at 150 °C. For example, at 85 °C ambient, allowable Ptot is reduced to 450 mW, calculated as 830 mW − (60 K × 6.64 mW/K).
BZT5250H-B22X 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):
- 22 V
- Tolerance:
- ±2%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 55 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 16.7 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-B22X FAQ
1.How can I place an order for BZT5250H-B22X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT5250H-B22X 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-B22X reliable?
The price and inventory of BZT5250H-B22X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT5250H-B22X is usually 5 days.
3.What payment methods are accepted for BZT5250H-B22X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT5250H-B22X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT5250H-B22X?
BZT5250H-B22X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT5250H-B22X 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-B22X?
For technical support, including BZT5250H-B22X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT5250H-B22X requirements.
6.How does Aetrix verify that BZT5250H-B22X is sourced from the original manufacturer or authorized distributors?
All BZT5250H-B22X 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-B22X meets industry standards.
7.What is the process for return or replacement of BZT5250H-B22X?
All BZT5250H-B22X units undergo pre-shipment inspection (PSI). If there is an issue with BZT5250H-B22X, 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-B22X part is unused and in its original packaging.
Return procedure for BZT5250H-B22X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT5250H-B22X Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
