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Nexperia USA Inc. BZT5250H-B30-QX
- Part No.:
- BZT5250H-B30-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT5250H-B30-QX.pdf
- Description:
- DIODE ZENER 30V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:8,826
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Product details
Overview
BZT5250H-B30-QX from Nexperia is a low-current Zener diode in SOD123F package, designed for precision voltage regulation at 30 V nominal Zener voltage (±2 % tolerance), 50 µA test current, and ≤830 mW total power dissipation. It serves as a stable reference or clamp in battery-powered sensor nodes, automotive body electronics, and low-power microcontroller reset circuits.
For engineers reviewing the BZT5250H-B30-QX datasheet, BZT5250H-B30-QX pinout, BZT5250H-B30-QX application, or BZT5250H-B30-QX equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, thermal resistance data, cathode/anode terminal mapping, and automotive-grade leakage behavior per AN90031.
Technical Context
This Zener diode operates with a specified 30 V nominal breakdown voltage at IZ = 50 µA, exhibiting 300 Ω typical differential resistance at IZ = 5 mA and a temperature coefficient of +0.05 mV/K. Its low test current enables minimal quiescent bias in always-on monitoring circuits.
The device features intentional minor leakage rise per AN90031 to improve switching speed and reduce noise in dynamic clamping roles. Qualified to AEC-Q101, it supports junction temperatures up to 150 °C and ambient ranges from −55 °C to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 29.4 V to 30.6 V at IZ = 50 µA - tight ±2 % tolerance enables accurate 30 V reference without trimming |
| Differential Resistance rdiff | 300 Ω max at IZ = 5 mA - ensures stable regulation under small load variations |
| Forward Voltage VF | 0.9 V max at IF = 10 mA - low conduction loss when used in bidirectional protection configurations |
| Total Power Dissipation Ptot | 830 mW at Tamb ≤ 25 °C on FR4 PCB with 1 cm² cathode pad - defines thermal derating envelope for surface-mount layout |
| Junction-to-Ambient Rth(j-a) | 330 K/W in free air - informs natural-convection thermal design for non-heatsinked applications |
| Reverse Current IR | 0.05 µA max at VR = 22.8 V - ultra-low leakage preserves battery life in standby mode |
| AEC-Q101 Qualified | Yes - validated for automotive body control modules, lighting, and infotainment power rails |
Pinout & Package
SOD123F plastic surface-mount 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 - reverse-biased during Zener operation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes bias path for controlled breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| Low-test-current Zener operation | Specified at IZ = 50 µA - minimizes standby current draw in coin-cell or energy-harvesting systems |
| Automotive-grade reliability | AEC-Q101 qualified - meets stress-test requirements for vibration, temperature cycling, and humidity in vehicle ECUs |
| Optimized leakage profile | Intentional minor IR rise per AN90031 - reduces switching transients and high-frequency noise in signal-line clamping |
| Thermally robust SMD package | SOD123F with 150 K/W junction-to-solder-point resistance - enables direct thermal coupling to copper pour for improved power handling |
Applications
| Automotive Body Control Unit (BCU) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Voltage clamping on LIN bus transceiver supply rail subject to load-dump transients. IC Role / Device Role / Timing Role: Zener clamp protecting 3.3 V LDO input against 30 V surges. Use Value: 30 V breakdown threshold aligns with ISO 7637-2 Pulse 5a limits; ±2 % tolerance ensures consistent trip point across temperature. |
Use Scenario: Reference stabilization for 16-bit ADC in battery-powered environmental monitor. IC Role / Device Role / Timing Role: Low-drift 30 V Zener supplying precision voltage divider for ADC full-scale calibration. Use Value: +0.05 mV/K tempco and 300 Ω rdiff maintain <0.1 % reference error over −40 °C to +105 °C. |
| Portable Medical Wearable Reset Circuit | Smart Home IoT Node Power Sequencing |
Use Scenario: Brown-out detection for ARM Cortex-M0+ MCU powered by single Li-ion cell. IC Role / Device Role / Timing Role: Zener-based comparator threshold set to 30 V scaled via resistor divider for 2.7 V reset trigger. Use Value: 50 µA test current enables micropower operation; 0.05 µA leakage at 22.8 V prevents false resets during deep sleep. |
Use Scenario: Power-rail sequencing control in Zigbee-enabled smart plug with dual 5 V/3.3 V supplies. IC Role / Device Role / Timing Role: Clamp on enable line to delay 3.3 V regulator turn-on until 5 V rail reaches 30 V-equivalent threshold. Use Value: SOD123F footprint allows placement adjacent to PMIC; AEC-Q101 rating supports extended product lifecycle in consumer infrastructure. |
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 30 V nominal, ±5 % tolerance, SOD-123 package, but rated only to 350 mW Ptot | Lacks AEC-Q101 qualification and optimized leakage profile per AN90031 | Select when cost sensitivity outweighs automotive compliance and noise performance |
| Vishay BZX84-C30 | 30 V nominal, ±5 %, SOT-23 package, 300 mW Ptot, no AEC-Q101 or low-IZ optimization | Higher rdiff (600 Ω) and larger footprint mismatch vs. SOD123F routing | Choose only for legacy SOT-23 board reuse where space permits and automotive grade not required |
Compared with MMBZ5250BS and BZX84-C30, BZT5250H-B30-QX delivers tighter tolerance, higher power margin (830 mW), AEC-Q101 validation, and application-specific leakage tuning - making it the sole choice for new automotive and ultra-low-power designs requiring 30 V regulation stability.
Availability
BZT5250H-B30-QX is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, portable medical wearables, and smart home IoT nodes requiring stable component supply across extended temperature and lifecycle demands.
Supply support for BZT5250H-B30-QX 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 essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.
BZT5250H-Q series belongs to Nexperia's AEC-Q101-qualified Zener portfolio, engineered specifically for low-current, low-noise voltage regulation in automotive and battery-constrained applications.
FAQ
What is the maximum reverse voltage before breakdown for BZT5250H-B30-QX?
The guaranteed breakdown range is 29.4 V to 30.6 V at IZ = 50 µA, with a maximum non-repetitive peak reverse voltage of 40 V for 100 µs pulses. Operation above 30.6 V under DC conditions risks exceeding specified differential resistance and thermal limits.
Does BZT5250H-B30-QX support reflow soldering only, or can it be hand-soldered?
Reflow soldering is the only recommended method per Nexperia's documentation. Hand-soldering is not advised due to thermal stress risks on the SOD123F package; peak reflow temperature must not exceed 260 °C for ≤10 seconds, with preheat at 150–200 °C for 60–120 seconds.
How does the "intentional minor rise of leakage current" affect circuit behavior?
Per AN90031, this controlled IR increase improves transient response and suppresses high-frequency ringing during fast voltage transitions - beneficial in ESD protection and signal-line clamping, but irrelevant in pure DC reference use where leakage is held below 0.05 µA at 22.8 V.
Is the 830 mW power rating valid across the full −55 °C to +150 °C ambient range?
No - the 830 mW rating applies only at Tamb ≤ 25 °C with specified PCB mounting (1 cm² cathode pad). Derating begins linearly above 25 °C, reaching zero at approximately 125 °C ambient based on Rth(j-a) = 330 K/W and Tj(max) = 150 °C.
BZT5250H-B30-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZT5250H-Q
- Package/Case:
- SOD-123F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 30 V
- Tolerance:
- ±2%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 22.8 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123F
BZT5250H-B30-QX FAQ
1.How can I place an order for BZT5250H-B30-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT5250H-B30-QX 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-B30-QX reliable?
The price and inventory of BZT5250H-B30-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT5250H-B30-QX is usually 5 days.
3.What payment methods are accepted for BZT5250H-B30-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT5250H-B30-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT5250H-B30-QX?
BZT5250H-B30-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT5250H-B30-QX 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-B30-QX?
For technical support, including BZT5250H-B30-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT5250H-B30-QX requirements.
6.How does Aetrix verify that BZT5250H-B30-QX is sourced from the original manufacturer or authorized distributors?
All BZT5250H-B30-QX 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-B30-QX meets industry standards.
7.What is the process for return or replacement of BZT5250H-B30-QX?
All BZT5250H-B30-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZT5250H-B30-QX, 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-B30-QX part is unused and in its original packaging.
Return procedure for BZT5250H-B30-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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