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Nexperia USA Inc. BZT5250H-C27-QX
- Part No.:
- BZT5250H-C27-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT5250H-C27-QX.pdf
- Description:
- DIODE ZENER 27V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:8,152
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Product details
Overview
BZT5250H-C27-QX from Nexperia is a low-current Zener diode in SOD123F package, rated for 27 V nominal Zener voltage at 50 µA test current, with ±5 % tolerance, 830 mW total power dissipation, and AEC-Q101 qualification for automotive use. It regulates voltage in low-bias circuits such as sensor biasing, reference voltage generation, and ECU power-rail clamping.
For engineers reviewing the BZT5250H-C27-QX datasheet, BZT5250H-C27-QX pinout, BZT5250H-C27-QX application, or BZT5250H-C27-QX equivalent, this page delivers verified Zener parameters, thermal resistance data (Rth(j-a) = 330 K/W), leakage behavior at VR = 24.3 V, differential resistance of 300 Ω at IZ = 5 mA, and cathode/anode terminal mapping for PCB layout and reliability validation.
Technical Context
This Zener operates with specified regulation at ultra-low 50 µA test current-enabling stable reference generation in battery-powered systems where quiescent current must remain below 100 µA. Its intentional minor leakage rise (per AN90031) reduces switching noise in signal conditioning paths without compromising DC accuracy.
The device features a temperature coefficient of +0.05 mV/K at 27 V, enabling predictable drift compensation in ambient ranges from −55 °C to +150 °C. Thermal resistance from junction to solder point is 150 K/W, supporting reliable operation on FR4 PCBs with single-sided copper and tin-plated cathode pad (1 cm²).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 25.65 V to 28.35 V at IZ = 50 µA - ensures ±5 % regulation window for precision biasing under minimal current draw |
| Differential Resistance rdiff | 300 Ω at IZ = 5 mA - defines dynamic impedance affecting load regulation error in feedback networks |
| Reverse Current IR | ≤ 0.05 µA at VR = 24.3 V - guarantees negligible leakage in high-impedance reference nodes |
| Total Power Dissipation Ptot | 830 mW at Tamb ≤ 25 °C - sets maximum continuous power handling on standard FR4 with cathode pad |
| Forward Voltage VF | 0.9 V at IF = 10 mA - determines conduction loss when used in reverse-polarity protection or clamp configurations |
| Junction Temperature Tj | 150 °C maximum - defines upper thermal limit for sustained operation in engine bay or under-hood modules |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including HTGB, HTRB, and temperature cycling per AEC stress test protocol |
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 orientation during placement |
| 2 | Anode (A) | Connected to ground or lower-potential rail; forms reverse-biased junction for Zener breakdown operation |
Key Features
| Feature | Design Value |
|---|---|
| Low-test-current regulation | Specified at 50 µA - enables stable voltage reference in micro-power sensor interfaces and wake-up circuits |
| Optimized leakage profile | Intentional minor IR rise per AN90031 - reduces high-frequency noise in analog front-ends without increasing static power |
| AEC-Q101 qualification | Qualified for automotive applications - supports deployment in ADAS sensors, body control modules, and infotainment power rails |
| Thermal performance | Rth(j-sp) = 150 K/W - allows direct thermal coupling to PCB copper for improved power derating in compact layouts |
| Small-form-factor SMD | SOD123F footprint - fits high-density routing in space-constrained modules like telematics units and gateway ECUs |
Applications
| Automotive Sensor Biasing | Portable Instrument Reference |
|---|---|
Use Scenario: Providing stable 27 V bias to MEMS pressure transducers in engine manifold monitoring. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to maintain fixed reference potential across sensor bridge. Use Value: ±5 % tolerance and <0.05 µA leakage ensure measurement accuracy remains within 0.25 % FS over −40 °C to +125 °C ambient. |
Use Scenario: Generating precise 27 V reference for handheld multimeter ADC input scaling. IC Role / Device Role / Timing Role: Low-current Zener regulator supplying reference voltage to 16-bit SAR ADC driver stage. Use Value: 50 µA test current enables operation from coin-cell supply while maintaining 300 Ω dynamic impedance for stable gain calibration. |
| ECU Power-Rail Clamping | Industrial IO Module Protection |
Use Scenario: Clamping 24 V CAN bus power rail against load-dump transients in body control unit. IC Role / Device Role / Timing Role: Fast-response Zener shunt protecting LDO input from >35 V surges lasting <100 µs. Use Value: Non-repetitive peak power rating of 40 W at tp = 100 µs prevents latch-up during ISO 7637-2 Pulse 5a events. |
Use Scenario: Regulating auxiliary 27 V supply for isolated RS-485 transceiver bias in factory automation PLC module. IC Role / Device Role / Timing Role: Precision Zener establishing clean local reference for isolated DC-DC feedback loop. Use Value: +0.05 mV/K tempco and 830 mW dissipation allow stable 27 V output across 0–70 °C industrial temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C27 | Same 27 V nominal, ±5 %, but SOT23 package; higher Rth(j-a) = 375 K/W; no AEC-Q101 qualification | Limited to commercial-grade portable electronics; unsuitable for under-hood automotive use | Select only for cost-sensitive non-automotive designs where thermal margin exceeds 25 °C |
| MMSZ5250B | 27 V, ±5 %, SOD123 package; 500 mW Ptot; no intentional leakage optimization or AEC-Q101 certification | Lower power handling restricts use to sub-100 µA bias networks; lacks noise-reduction design for analog signal chains | Prefer for legacy designs requiring second-source availability, not for new automotive or low-noise applications |
Compared with BZT5250H-C27-QX, BZX84-C27 offers smaller footprint but sacrifices thermal robustness and automotive qualification, while MMSZ5250B trades 330 mW lower power rating and no noise-optimized leakage for broader distributor stock-making the Nexperia part uniquely suited for AEC-compliant, low-noise, high-stability 27 V regulation.
Availability
BZT5250H-C27-QX is available at Aetrix Electronics and suitable for automotive sensor biasing, portable instrument reference generation, and ECU power-rail clamping requiring stable component supply across extended temperature and lifecycle requirements.
Supply support for BZT5250H-C27-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-enhancing components, delivering high-performance, reliable, and scalable 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 electronics and portable instrumentation where precision, stability, and reliability are critical.
FAQ
What is the Zener voltage tolerance for BZT5250H-C27-QX?
The BZT5250H-C27-QX has a nominal Zener voltage of 27 V with a guaranteed tolerance of ±5 %, meaning the actual VZ falls between 25.65 V and 28.35 V when measured at IZ = 50 µA and Tj = 25 °C. This tolerance band is confirmed in Table 8 of the official Nexperia datasheet Rev. 2 (July 2024).
Is BZT5250H-C27-QX suitable for automotive applications?
Yes-BZT5250H-C27-QX is fully qualified to AEC-Q101 for discrete semiconductors, including stress tests for high-temperature reverse bias, temperature cycling, and humidity testing. Its 150 °C max junction temperature and operation down to −55 °C ambient make it appropriate for under-hood and chassis-mounted automotive modules.
How does the "intentional minor rise of leakage current" benefit circuit design?
This feature, documented in Application Note AN90031, slightly increases reverse leakage near breakdown to suppress high-frequency oscillation and reduce broadband noise in sensitive analog signal paths-without degrading DC regulation accuracy or increasing static power consumption beyond 0.05 µA at VR = 24.3 V.
What is the thermal resistance from junction to ambient for BZT5250H-C27-QX?
The thermal resistance from junction to ambient (Rth(j-a)) is 330 K/W when mounted on an FR4 PCB with single-sided copper and standard footprint, per Table 6 of the datasheet. This value assumes free-air convection and defines the worst-case thermal derating slope for continuous operation above 25 °C ambient.
BZT5250H-C27-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):
- 27 V
- Tolerance:
- ±5%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 20.4 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-C27-QX FAQ
1.How can I place an order for BZT5250H-C27-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT5250H-C27-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-C27-QX reliable?
The price and inventory of BZT5250H-C27-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-C27-QX is usually 5 days.
3.What payment methods are accepted for BZT5250H-C27-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT5250H-C27-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT5250H-C27-QX?
BZT5250H-C27-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT5250H-C27-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-C27-QX?
For technical support, including BZT5250H-C27-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT5250H-C27-QX requirements.
6.How does Aetrix verify that BZT5250H-C27-QX is sourced from the original manufacturer or authorized distributors?
All BZT5250H-C27-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-C27-QX meets industry standards.
7.What is the process for return or replacement of BZT5250H-C27-QX?
All BZT5250H-C27-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZT5250H-C27-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-C27-QX part is unused and in its original packaging.
Return procedure for BZT5250H-C27-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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