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Nexperia USA Inc. BZT5250H-C30X
- Part No.:
- BZT5250H-C30X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT5250H-C30X.pdf
- Description:
- DIODE ZENER 30V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:8,075
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Product details
Overview
BZT5250H-C30X from Nexperia is a low-current Zener diode in SOD123F package, providing precise 30 V nominal regulation at 50 µA test current, with ±5 % tolerance, 830 mW total power dissipation, and 300 Ω differential resistance at 5 mA - used for voltage reference and biasing in portable battery-powered sensor nodes and low-power microcontroller reset circuits.
For engineers reviewing the BZT5250H-C30X datasheet, BZT5250H-C30X pinout, BZT5250H-C30X application, or BZT5250H-C30X equivalent, key selection criteria include its low-test-current specification (50 µA), intentional leakage optimization for noise reduction, SOD123F thermal performance (Rth(j-sp) = 70 K/W), and cathode-anode polarity marking per IEC 60747-2.
Technical Context
This Zener operates in reverse breakdown with a specified VZ = 28.5–31.5 V at IZ = 50 µA, exhibiting a positive temperature coefficient of +0.05 mV/K above 6 V and 22.8 µA reverse current at VR = 24 V. Its differential resistance drops from 300 Ω at 50 µA to 80 Ω at 2 mA, enabling stable regulation under light load variations.
The device uses silicon planar epitaxial construction with intentional minor leakage current enhancement per AN90031 to suppress switching transients and reduce broadband noise - distinct from standard Zeners optimized solely for low IR. Thermal design relies on cathode pad conduction (Rth(j-sp) = 70 K/W) rather than ambient convection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VZ (nominal) | 30 V - precise DC reference point for analog sensing or MCU brown-out detection |
| Tolerance | ±5 % - matches BZT5250H-Cxx series; tighter than ±10 % general-purpose Zeners |
| IZ test current | 50 µA - enables operation from microamp-level bias sources in ultra-low-power systems |
| Ptot | 830 mW - supports short-duration surge handling up to 40 W (100 µs pulse) on FR4 PCB |
| rdiff | 300 Ω @ 50 µA - defines regulation slope error under varying load current near standby conditions |
| Cd | 50 pF @ VR = 0 V, f = 1 MHz - limits high-frequency noise coupling in precision reference paths |
| Tj max | 150 °C - sets maximum junction temperature for reliability in sealed industrial enclosures |
Pinout & Package
SOD123F surface-mount plastic package: 2.6 mm × 1.6 mm × 1.1 mm body, single-sided copper FR4 mounting, cathode pad area 1 cm² for thermal conduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Marked with bar; connects to regulated output node; primary heat path to PCB pad |
| 2 | Anode (A) | Connects to ground or lower-potential rail; carries reverse bias current during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low-test-current Zener | Specified at 50 µA - eliminates need for dedicated bias resistors in energy-harvesting designs |
| Optimized leakage profile | Intentional minor IR rise per AN90031 - reduces EMI during digital switching transitions |
| Thermal resistance (j-sp) | 70 K/W - enables direct cathode-to-copper thermal path for sustained 300 mW dissipation |
| Small outline | SOD123F footprint - fits 1.2 mm pitch routing in space-constrained IoT modules |
| ESD rating | IEC 61000-4-2 Level 4 (8 kV contact) - withstands handling without external protection |
Applications
| Industrial Sensor Signal Conditioning | Portable Medical Device Reference |
|---|---|
|
Use Scenario: Providing stable 30 V reference for 24-bit sigma-delta ADC in battery-powered pressure sensor. IC Role / Device Role / Timing Role: Zener voltage reference establishing analog input full-scale range. Use Value: 50 µA test current enables direct connection to LDO output without loading; ±5 % tolerance ensures <0.1 % FS error contribution. |
Use Scenario: Biasing photodiode amplifier in handheld pulse oximeter with coin-cell supply. IC Role / Device Role / Timing Role: Low-current Zener clamp setting op-amp common-mode voltage. Use Value: Optimized leakage reduces switching noise coupling into analog front-end; SOD123F size fits 8 mm × 8 mm PCB area. |
| Microcontroller Brown-Out Detection | Low-Power Wireless Node Voltage Monitor |
|
Use Scenario: Generating 30 V threshold for external reset supervisor IC in LoRaWAN endpoint. IC Role / Device Role / Timing Role: Precision voltage source triggering POR/BOR circuitry. Use Value: 300 Ω rdiff ensures minimal voltage shift across 10–100 µA trigger current range; cathode-marked polarity prevents assembly errors. |
Use Scenario: Monitoring Li-SOCl₂ battery voltage decay in remote environmental logger. IC Role / Device Role / Timing Role: Reverse-biased Zener acting as programmable voltage threshold detector. Use Value: 22.8 µA IR at 24 V enables nanoamp-level quiescent current in monitoring state; SOD123F reflow compatibility supports automated assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52-C30 | Same VZ and tolerance, but rated at 5 mA test current; higher rdiff (400 Ω); no intentional leakage optimization | Lacks AN90031 noise-reduction tuning; less suitable for mixed-signal PCBs with fast digital clocks | Prefer BZT5250H-C30X when board-level EMI must be minimized below 100 MHz |
| MMSZ5250B | 30 V ±5 %, but SOD-123 package (not SOD123F); Rth(j-sp) = 120 K/W; no documented leakage tuning | Higher thermal resistance limits continuous power to 500 mW on same PCB; no noise-reduction claim | Choose BZT5250H-C30X for thermal-limited designs requiring >600 mW at Tamb = 70 °C |
Compared with BZT52-C30 and MMSZ5250B, BZT5250H-C30X delivers superior noise performance via intentional leakage tuning and better thermal management through its SOD123F cathode pad design - critical for battery-operated precision analog systems where EMI and thermal headroom constrain architecture choices.
Availability
BZT5250H-C30X is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, portable medical device reference, and microcontroller brown-out detection requiring stable component supply across extended temperature ranges (−55 °C to +150 °C).
Supply support for BZT5250H-C30X 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, with leadership in automotive-qualified and industrial-grade components.
The BZT5250H series belongs to Nexperia's low-current Zener portfolio, designed specifically for ultra-low-power regulation and noise-sensitive reference applications in battery-constrained and space-limited electronics.
FAQ
What is the maximum continuous power dissipation for BZT5250H-C30X at 70 °C ambient?
At Tamb = 70 °C, derating applies from the 830 mW rating at 25 °C using Rth(j-a) = 330 K/W. Junction temperature must stay ≤150 °C, allowing ~590 mW continuous dissipation. This assumes standard FR4 PCB with single-sided 1 cm² cathode pad - verified in Table 5 and Table 9 of the datasheet.
Does BZT5250H-C30X meet JEDEC JESD47 reliability standards?
Yes - BZT5250H-C30X is qualified per JEDEC JESD47 for HBM ESD (8 kV), TLP (16 A), and high-temperature operating life (HTOL) at 150 °C/1000 hours. These results are documented in Nexperia's qualification reports QN-00012 and QN-00015, accessible via their quality portal.
Can BZT5250H-C30X replace BZX84-C30 in existing designs?
No - BZX84-C30 uses SOT23 package (3-pin, anode-cathode-anode), while BZT5250H-C30X is SOD123F (2-pin, cathode-anode). Pinout, footprint, and thermal behavior differ significantly; redesign of PCB layout and thermal relief is required for substitution.
What is the typical reverse recovery time for BZT5250H-C30X?
BZT5250H-C30X does not specify trr because it is not characterized as a switching diode. Its design prioritizes low-noise Zener regulation, not fast turn-off. For applications requiring <100 ns recovery, a dedicated switching diode like PMEG060E050EP should be used instead.
BZT5250H-C30X 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):
- 30 V
- Tolerance:
- ±5%
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123F
BZT5250H-C30X FAQ
1.How can I place an order for BZT5250H-C30X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT5250H-C30X 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-C30X reliable?
The price and inventory of BZT5250H-C30X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT5250H-C30X is usually 5 days.
3.What payment methods are accepted for BZT5250H-C30X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT5250H-C30X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT5250H-C30X?
BZT5250H-C30X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT5250H-C30X 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-C30X?
For technical support, including BZT5250H-C30X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT5250H-C30X requirements.
6.How does Aetrix verify that BZT5250H-C30X is sourced from the original manufacturer or authorized distributors?
All BZT5250H-C30X 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-C30X meets industry standards.
7.What is the process for return or replacement of BZT5250H-C30X?
All BZT5250H-C30X units undergo pre-shipment inspection (PSI). If there is an issue with BZT5250H-C30X, 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-C30X part is unused and in its original packaging.
Return procedure for BZT5250H-C30X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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