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Nexperia USA Inc. BZT5250H-C11X
- Part No.:
- BZT5250H-C11X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT5250H-C11X.pdf
- Description:
- DIODE ZENER 11V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:4,059
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Product details
Overview
BZT5250H-C11X from Nexperia is a low-current Zener diode in SOD123F package, rated for 11 V nominal regulation at 50 µA test current, with ±5 % tolerance, 830 mW total power dissipation, and optimized leakage for fast switching and noise reduction in portable battery-powered voltage reference circuits.
For engineers reviewing the BZT5250H-C11X datasheet, BZT5250H-C11X pinout, BZT5250H-C11X application, or BZT5250H-C11X equivalent, this part serves as a precision low-bias voltage regulator in space-constrained, low-power analog monitoring and reference subsystems where thermal stability and low leakage are critical.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified working voltage of 10.45 V to 11.55 V at IZ = 50 µA, exhibiting a temperature coefficient of +5.4 mV/K and differential resistance ≤150 Ω at IZ = 1 mA. Its intentional minor rise in leakage current enables faster transient response and reduced noise in feedback paths.
Designed for surface-mount use on FR4 PCBs with single-sided copper, it delivers 830 mW power dissipation with a 1 cm² cathode pad and maintains junction temperature up to 150 °C. Thermal resistance from junction to solder point is 150 K/W, supporting reliable operation in compact, thermally unassisted layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 11 V (10.45–11.55 V range at 50 µA; stable reference for low-current bias networks) |
| Tolerance | ±5 % (C-series grade; supports cost-optimized designs where tighter tolerance is not required) |
| Test Current | 50 µA (enables ultra-low quiescent current operation in battery-powered sensor nodes) |
| Total Power Dissipation | 830 mW (at Tamb ≤ 25 °C with 1 cm² cathode pad; sufficient for passive regulation in signal conditioning) |
| Differential Resistance | ≤150 Ω at IZ = 1 mA (low dynamic impedance ensures minimal output voltage shift under small load variations) |
| Reverse Leakage @ VR = 9 V | ≤0.05 µA (ultra-low leakage preserves battery life and minimizes error in high-impedance reference dividers) |
| Forward Voltage | 0.9 V at IF = 10 mA (supports bidirectional protection or dual-role circuit integration) |
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; carries reverse breakdown current |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes Zener conduction path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Optimized leakage profile | Intentional minor rise improves switching speed and reduces noise in feedback loops (AN90031) |
| Low test current specification | 50 µA rating enables stable regulation in micro-power systems without active biasing |
| Thermal performance | Rth(j-sp) = 150 K/W supports reliable operation on standard FR4 without thermal vias |
| Small footprint | SOD123F package fits high-density layouts while maintaining 830 mW dissipation capability |
| Two tolerance options | ±2 % (B-series) and ±5 % (C-series) allow trade-off between precision and cost |
Applications
| Portable Sensor Reference | Low-Power ADC Bias |
|---|---|
Use Scenario: Providing stable 11 V reference for MEMS pressure sensor excitation in coin-cell-powered IoT nodes. IC Role / Device Role / Timing Role: Zener voltage reference supplying fixed bias to sensor bridge, operating continuously at <100 µA. Use Value: Ultra-low 50 µA test current and <0.05 µA leakage at 9 V minimize battery drain over multi-year deployments. |
Use Scenario: Generating precise 11 V reference for 12-bit SAR ADC in handheld medical monitor. IC Role / Device Role / Timing Role: Passive voltage reference source for ADC VREF input, isolated from noisy digital supply rails. Use Value: ±5 % tolerance and ≤150 Ω dynamic impedance ensure <0.5 LSB reference error across temperature and load variation. |
| Microcontroller Reset Threshold | Signal-Level Clamping |
Use Scenario: Setting brown-out detection threshold for ultra-low-power MCU in smart meter design. IC Role / Device Role / Timing Role: Zener-based comparator input reference, activated only during undervoltage events. Use Value: Fast switching response from optimized leakage enables sub-10 µs threshold detection latency. |
Use Scenario: Protecting analog front-end inputs from ESD transients in industrial data acquisition modules. IC Role / Device Role / Timing Role: Low-capacitance (85 pF) clamping diode shunting overvoltage to ground before IC damage. Use Value: 85 pF capacitance at 0 V and 11 V breakdown voltage provide effective high-frequency transient suppression without signal distortion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT5250H-B11 | ±2 % tolerance (vs. ±5 %), same 11 V nominal, identical SOD123F package and thermal specs | Higher precision required in metrology-grade references; tighter VZ drift over temperature | Select when absolute voltage accuracy outweighs cost sensitivity and leakage optimization is secondary |
| MMBZ5240BS-7-F | Same 10 V nominal, SOD-323 package (1.7 × 1.25 × 0.95 mm), 200 mW Ptot, higher rdiff (≤250 Ω) | Used in ultra-dense RF front-ends where footprint is prioritized over power handling | Choose only if board area is constrained below SOD123F limits and 200 mW dissipation suffices |
Compared with BZT5250H-B11, the C11X offers relaxed tolerance for cost-sensitive designs while retaining optimized leakage behavior; versus MMBZ5240BS-7-F, it delivers 4× higher power capability and lower dynamic impedance in a slightly larger but more robust package.
Availability
BZT5250H-C11X is available at Aetrix Electronics and suitable for portable sensor reference, low-power ADC bias, and microcontroller reset threshold applications requiring stable component supply across extended production lifecycles.
Supply support for BZT5250H-C11X 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.
The BZT5250H series belongs to Nexperia's low-current Zener diode product line, engineered specifically for battery-powered and space-constrained applications demanding ultra-low test current, stable regulation, and enhanced noise immunity.
FAQ
What is the maximum continuous reverse power dissipation for BZT5250H-C11X at 70 °C ambient?
At Tamb = 70 °C, derated power dissipation is 581 mW, calculated using the 830 mW rating at 25 °C and thermal resistance Rth(j-a) = 330 K/W. This assumes mounting on FR4 with single-sided copper and standard footprint per datasheet condition [2]. Junction temperature remains within 150 °C limit under this condition.
Does BZT5250H-C11X support bidirectional ESD protection?
No - BZT5250H-C11X is a unidirectional Zener diode optimized for reverse-biased regulation. Its forward voltage is 0.9 V at 10 mA, but it lacks symmetric clamping characteristics or specified ESD ratings. For bidirectional protection, dedicated TVS diodes like PESD5V0S1BA should be used instead.
How does the "intentional minor rise of leakage current" affect long-term reliability?
This controlled leakage increase is a design feature verified per AN90031 and does not compromise reliability. It results from process tuning to reduce minority carrier lifetime, improving switching speed without accelerating degradation mechanisms. FIT rate remains consistent with Nexperia's standard Zener qualification (JESD22-A108).
Can BZT5250H-C11X replace BZX84-C11 in existing designs?
Direct replacement is possible only if layout accommodates SOD123F (2.6 × 1.6 mm) vs. SOT23 (2.9 × 1.3 mm) and thermal design accounts for 830 mW vs. 300 mW rating. Electrical parameters differ: BZX84-C11 has higher rdiff (≤200 Ω) and no optimized leakage profile. Validation of regulation stability under actual load and temperature is required.
BZT5250H-C11X 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):
- 11 V
- Tolerance:
- ±5%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 8.4 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-C11X FAQ
1.How can I place an order for BZT5250H-C11X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT5250H-C11X 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-C11X reliable?
The price and inventory of BZT5250H-C11X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT5250H-C11X is usually 5 days.
3.What payment methods are accepted for BZT5250H-C11X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT5250H-C11X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT5250H-C11X?
BZT5250H-C11X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT5250H-C11X 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-C11X?
For technical support, including BZT5250H-C11X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT5250H-C11X requirements.
6.How does Aetrix verify that BZT5250H-C11X is sourced from the original manufacturer or authorized distributors?
All BZT5250H-C11X 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-C11X meets industry standards.
7.What is the process for return or replacement of BZT5250H-C11X?
All BZT5250H-C11X units undergo pre-shipment inspection (PSI). If there is an issue with BZT5250H-C11X, 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-C11X part is unused and in its original packaging.
Return procedure for BZT5250H-C11X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT5250H-C11X Tags
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