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Nexperia USA Inc. BZT5250H-B3V0X
- Part No.:
- BZT5250H-B3V0X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT5250H-B3V0X.pdf
- Description:
- DIODE ZENER 3V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:9,355
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Product details
Overview
BZT5250H-B3V0X from Nexperia is a low-current Zener diode in SOD123F package, providing precise 3.0 V regulation at 50 µA test current with ±2 % tolerance, 600 Ω dynamic impedance at 50 µA, and 0.8 µA reverse leakage at VR = 2.4 V - used for voltage reference and biasing in portable battery-powered sensor nodes and microcontroller reset circuits.
For engineers reviewing the BZT5250H-B3V0X datasheet, BZT5250H-B3V0X pinout, BZT5250H-B3V0X application, or BZT5250H-B3V0X equivalent, key selection criteria include low-test-current regulation stability, thermal resistance (150 K/W junction-to-solder-point), SOD123F footprint compatibility, and leakage-optimized switching behavior per AN90031.
Technical Context
This Zener operates in reverse breakdown with a nominal 3.0 V working voltage (2.94–3.06 V min/max), specified at 50 µA to minimize power draw in ultra-low-bias applications. Its differential resistance remains ≤600 Ω at IZ = 50 µA and drops to ≤100 Ω at IZ = 1 mA, supporting stable regulation across light-load variations.
The device features intentional minor leakage rise (per AN90031) to improve transient response and reduce noise in signal conditioning paths. Thermal design is enabled by Rth(j-sp) = 150 K/W and Rth(j-a) = 330 K/W, validated on FR4 PCB with tin-plated single-sided copper and 1 cm² cathode pad.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.94 V to 3.06 V at IZ = 50 µA - ensures tight 3.0 V reference under ultra-low bias conditions |
| Tolerance | ±2 % - enables high-accuracy voltage clamping without external trimming |
| Differential Resistance (rdiff) | ≤600 Ω at IZ = 50 µA - maintains regulation stability even at microampere bias currents |
| Reverse Leakage (IR) | 0.8 µA max at VR = 2.4 V - supports low-quiescent-power operation in always-on circuits |
| Total Power Dissipation (Ptot) | 830 mW at Tamb ≤ 25 °C on 1 cm² cathode pad - allows moderate power handling in compact SMD layout |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA - defines anode-cathode conduction threshold for bidirectional protection use cases |
| Junction Temperature (Tj) | 150 °C maximum - sets thermal derating boundary for continuous operation in industrial environments |
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 - critical for correct polarity in shunt regulation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; forms reverse-biased junction enabling Zener breakdown at 3.0 V |
Key Features
| Feature | Design Value |
|---|---|
| Low-test-current specification | Rated at IZ = 50 µA - enables accurate regulation in energy-constrained IoT sensors and coin-cell devices |
| Optimized leakage profile | Intentional minor IR rise per AN90031 - improves switching speed and reduces broadband noise in analog front-ends |
| Thermal performance | Rth(j-sp) = 150 K/W - supports reliable power dissipation with minimal PCB copper area |
| Package compatibility | SOD123F footprint - matches industry-standard reflow soldering profiles and automated placement equipment |
| Voltage tolerance options | ±2 % (B-series) and ~±5 % (C-series) - provides precision vs. cost trade-off for different BOM tiers |
Applications
| Microcontroller Reset Circuit | Portable Sensor Bias Reference |
|---|---|
|
Use Scenario: Provides clean, stable 3.0 V reference to enable precise reset threshold detection in ARM Cortex-M0+ MCUs powered by 3.3 V LDOs. IC Role / Device Role / Timing Role: Shunt Zener regulator establishing fixed voltage rail for reset comparator input. Use Value: ±2 % tolerance and 0.8 µA leakage ensure reset accuracy over temperature and extend battery life in wireless sensor transmitters. |
Use Scenario: Supplies bias voltage to MEMS accelerometer analog front-end in wearable health monitors operating from CR2032 cells. IC Role / Device Role / Timing Role: Low-current voltage reference stabilizing op-amp supply rails and ADC reference inputs. Use Value: 50 µA test current rating and 600 Ω rdiff maintain regulation integrity during intermittent wake-up bursts without load-induced drift. |
| USB-C Port Overvoltage Clamp | Industrial PLC Input Protection |
|
Use Scenario: Clamps transient overvoltage on USB-C CC line during hot-plug events in embedded host controllers. IC Role / Device Role / Timing Role: Fast-reacting Zener clamp absorbing ESD and surge energy before downstream PHY damage. Use Value: Optimized leakage profile per AN90031 reduces capacitive loading and preserves signal integrity on high-speed configuration channels. |
Use Scenario: Protects 24 V digital input channel of DIN-rail PLC against field-wiring transients and induced surges. IC Role / Device Role / Timing Role: Primary shunt limiter in multi-stage protection network, preceding TVS and series resistor. Use Value: 830 mW Ptot and 150 °C Tj rating allow sustained clamping during repetitive 100 V/1 A surge tests per IEC 61000-4-5. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5222BS-7-F | 3.0 V, ±5 %, SOD-323, 200 mW Ptot, rdiff = 1000 Ω @ 20 µA | Lower power rating and looser tolerance; higher dynamic impedance limits low-current stability | Acceptable only where cost drives selection and regulation precision < ±5 % is sufficient |
| BZX384-B3V0 | 3.0 V, ±2 %, SOD-323, 300 mW Ptot, rdiff = 90 Ω @ 5 mA | Higher test current (5 mA) increases quiescent draw; unsuitable for sub-100 µA bias designs | Preferred when higher current drive capability is needed, but incompatible with ultra-low-power sleep modes |
Compared with MMBZ5222BS-7-F and BZX384-B3V0, BZT5250H-B3V0X uniquely balances ±2 % precision, 50 µA test current, and 830 mW thermal capability - making it optimal for battery-operated systems requiring long-term voltage reference stability without compromising PCB area or thermal margin.
Availability
BZT5250H-B3V0X is available at Aetrix Electronics and suitable for portable sensor nodes, microcontroller reset circuits, USB-C interface protection, and industrial PLC input stages requiring stable component supply with guaranteed long-term continuity.
Supply support for BZT5250H-B3V0X 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 logic, discrete, and MOSFET solutions optimized for efficiency, reliability, and miniaturization in consumer, industrial, and automotive applications.
The BZT5250H series belongs to Nexperia's low-current Zener portfolio, engineered specifically for precision voltage reference and ultra-low-power biasing in battery-constrained and space-sensitive designs.
FAQ
What is the maximum reverse voltage that BZT5250H-B3V0X can safely clamp?
The device is rated for non-repetitive peak reverse power dissipation of 40 W at tp = 100 µs, corresponding to a maximum clamped voltage of approximately 3.0 V during breakdown. Its absolute maximum reverse voltage is limited by the 3.06 V upper bound of the Zener voltage range at IZ = 50 µA; operation beyond this risks thermal runaway due to insufficient heat sinking in SOD123F package.
How does the "intentional minor rise of leakage current" affect circuit performance?
Per AN90031, this controlled leakage increase reduces minority-carrier lifetime, shortening turn-off time and lowering high-frequency noise generation. In practice, it improves transient response during fast voltage excursions and suppresses broadband interference in analog signal chains - without degrading DC regulation accuracy or increasing static power consumption beyond datasheet limits.
Can BZT5250H-B3V0X be used in place of a standard 3.3 V Zener diode?
No - its nominal Zener voltage is 3.0 V (2.94–3.06 V), not 3.3 V. Substituting it for a 3.3 V part would cause undervoltage at the regulated node, potentially triggering false resets or analog reference errors. For 3.3 V applications, BZT5250H-B3V3X (3.3 V, ±2 %) is the functionally matched variant in the same series and package.
What PCB layout considerations are critical for thermal reliability?
Mounting must follow the datasheet's 1 cm² cathode pad requirement on single-sided FR4 with tin plating to achieve the rated 830 mW dissipation. Reducing pad area increases Rth(j-sp) beyond 150 K/W, causing junction temperature to exceed 150 °C at just 300 mW - risking parametric shift or premature failure. Avoid thermal vias under the cathode unless validated per Nexperia's SOD123F reflow footprint guidelines.
BZT5250H-B3V0X 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):
- 3 V
- Tolerance:
- ±2%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 800 nA @ 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-B3V0X FAQ
1.How can I place an order for BZT5250H-B3V0X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT5250H-B3V0X 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-B3V0X reliable?
The price and inventory of BZT5250H-B3V0X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT5250H-B3V0X is usually 5 days.
3.What payment methods are accepted for BZT5250H-B3V0X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT5250H-B3V0X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT5250H-B3V0X?
BZT5250H-B3V0X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT5250H-B3V0X 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-B3V0X?
For technical support, including BZT5250H-B3V0X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT5250H-B3V0X requirements.
6.How does Aetrix verify that BZT5250H-B3V0X is sourced from the original manufacturer or authorized distributors?
All BZT5250H-B3V0X 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-B3V0X meets industry standards.
7.What is the process for return or replacement of BZT5250H-B3V0X?
All BZT5250H-B3V0X units undergo pre-shipment inspection (PSI). If there is an issue with BZT5250H-B3V0X, 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-B3V0X part is unused and in its original packaging.
Return procedure for BZT5250H-B3V0X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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