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Nexperia USA Inc. BZT52H-C11-QX
- Part No.:
- BZT52H-C11-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52H-C11-QX.pdf
- Description:
- DIODE ZENER 11V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:8,203
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Product details
Overview
BZT52H-C11-QX from Nexperia is a ±5 % tolerance Zener diode in SOD123F package, rated for 11 V nominal breakdown voltage at 5 mA, 830 mW total power dissipation, and qualified to AEC-Q101 for automotive voltage regulation and reference applications.
For engineers reviewing the BZT52H-C11-QX datasheet, BZT52H-C11-QX pinout, BZT52H-C11-QX application, or BZT52H-C11-QX equivalent, this page delivers verified Zener parameters, thermal resistance values, reverse current limits, temperature coefficient behavior, and automotive-grade reliability context - all confirmed from Nexperia's official product data sheet Rev. 1 (October 2021).
Technical Context
This device operates as a precision voltage reference in reverse-biased mode, with a specified Zener voltage of 10.4 V to 11.6 V at IZ = 5 mA and a temperature coefficient of +0.1 mV/K. Its differential resistance is ≤70 Ω, enabling stable regulation under moderate load variation.
Designed for surface-mount use on FR4 PCBs, it features a cathode-anode two-terminal configuration, marking bar indicating cathode, and thermal resistance from junction to solder point of 70 K/W - critical for thermal management in compact automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 10.4 V to 11.6 V at IZ = 5 mA - defines regulated output range under standard test conditions |
| Tolerance | ±5 % - specifies maximum deviation from nominal 11 V, used for BOM tolerance budgeting |
| Power Dissipation (Ptot) | 830 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling on standard FR4 pad |
| Differential Resistance (rdif) | ≤70 Ω - determines output impedance and regulation sensitivity to current changes |
| Reverse Current (IR) | ≤10 μA at VR = 8.8 V - quantifies leakage below knee voltage, critical for low-power standby circuits |
| Temperature Coefficient (SZ) | +0.1 mV/K at IZ = 5 mA - indicates near-zero drift over temperature, suitable for stable references |
| Junction Temperature (Tj) | −65 °C to +150 °C - confirms operational capability across full automotive ambient range |
Pinout & Package
SOD123F plastic surface-mount package: 2-lead, flat lead, small outline (3.6 mm × 1.7 mm × 1.0 mm), cathode marked by bar on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal for correct PCB orientation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; reverse bias applied between anode and cathode to enable Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive use per stress test standard - enables deployment in engine control, body electronics, and ADAS without additional qualification |
| Three tolerance options | ±1 %, ±2 %, and ±5 % variants - allows cost-performance trade-off selection based on system accuracy requirements |
| Low thermal resistance | Rth(j-sp) = 70 K/W - supports higher power operation with minimal junction temperature rise when soldered to adequate copper area |
| Wide voltage range | 2.4 V to 75 V (E24 series) - provides standardized Zener selection across diverse supply rail and reference needs |
| Pulse surge capability | IZSM = 2.5 A (100 μs) - withstands transient overvoltage events common in automotive load-dump scenarios |
Applications
| Automotive ECU Power Monitoring | Industrial Sensor Reference Supply |
|---|---|
Use Scenario: Monitoring 12 V battery rail in engine control unit to detect undervoltage/overvoltage faults. IC Role / Device Role / Timing Role: Zener diode provides stable 11 V reference for comparator input against which battery voltage is scaled and compared. Use Value: ±5 % tolerance and +0.1 mV/K TC ensure fault thresholds remain within ±200 mV over −40 °C to +125 °C ambient. |
Use Scenario: Generating precise bias voltage for analog front-end of pressure sensor in factory automation PLC. IC Role / Device Role / Timing Role: Functions as shunt regulator supplying clean 11 V to op-amp reference input and ADC voltage reference buffer. Use Value: 70 Ω differential resistance minimizes output impedance shift under varying sensor bias current, preserving measurement linearity. |
| LED Driver Current Set Point | USB Port Overvoltage Clamp |
Use Scenario: Setting constant current for high-brightness LED string in automotive interior lighting module. IC Role / Device Role / Timing Role: Zener establishes reference voltage across current-sense resistor in linear LED driver feedback loop. Use Value: 830 mW power rating supports sustained 75 mA sense current at 11 V without thermal derating on standard FR4 layout. |
Use Scenario: Protecting USB data lines from 12 V transients induced by nearby relay switching in infotainment head unit. IC Role / Device Role / Timing Role: Placed in parallel with signal line to clamp reverse surges above 11 V before reaching PHY IC. Use Value: 2.5 A non-repetitive peak current rating handles short-duration spikes while maintaining <10 μA leakage at 5 V operating level. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52H-B11-Q | ±2 % tolerance, 60 Ω rdif, +0.1 mV/K TC | Higher accuracy required in precision reference circuits where ±5 % drift is unacceptable | Select when tighter regulation stability justifies modest cost increase and lower power margin (750 mW Ptot) |
| MMSZ5240B-TP | ±5 % tolerance, 150 Ω rdif, +2 mV/K TC, SOD-123 package | Lower thermal performance and higher tempco limit use to non-automotive, room-temperature environments | Choose only for cost-sensitive consumer designs where AEC-Q101 compliance and low-drift operation are not required |
Compared with BZT52H-C11-QX, the BZT52H-B11-Q offers improved regulation accuracy and lower dynamic impedance but reduced power headroom, while MMSZ5240B-TP lacks automotive qualification and exhibits significantly higher temperature-induced drift - making the original part optimal for thermally demanding, safety-critical vehicle systems.
Availability
BZT52H-C11-QX is available at Aetrix Electronics and suitable for automotive ECU monitoring, industrial sensor reference supplies, LED driver current setting, and USB port overvoltage clamping requiring stable component supply with AEC-Q101 assurance.
Supply support for BZT52H-C11-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 high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified components and energy-efficient solutions.
The BZT52H-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for robust voltage regulation and reference functions in harsh automotive environments - including powertrain, chassis, and body control modules.
FAQ
What is the maximum continuous reverse current the BZT52H-C11-QX can handle at 25 °C?
The device is rated for a maximum total power dissipation of 830 mW at Tamb ≤ 25 °C. With a nominal Zener voltage of 11 V, this corresponds to a maximum continuous reverse current of approximately 75 mA (830 mW ÷ 11 V). Operation beyond this requires thermal derating per the Rth(j-a) = 330 K/W curve.
How does the ±5 % tolerance affect circuit design margins?
The ±5 % tolerance means the actual Zener voltage falls between 10.4 V and 11.6 V at 5 mA. Designers must size series resistors and verify regulation headroom across this full range - especially critical in battery-monitoring comparators where threshold accuracy directly impacts fault detection reliability.
Is the SOD123F package compatible with standard reflow profiles?
Yes - Nexperia explicitly recommends reflow soldering only for the SOD123F package. The footprint in Figure 12 specifies 2.9 mm × 1.6 mm solder land dimensions, and the device is qualified for JEDEC J-STD-020 moisture sensitivity level 1, supporting standard lead-free reflow cycles without preconditioning.
Can BZT52H-C11-QX replace older BZT52C11 variants in existing designs?
Yes - BZT52H-C11-QX maintains identical electrical specifications, pinout, and SOD123F footprint as legacy BZT52C11 parts, while adding AEC-Q101 qualification and improved thermal resistance (Rth(j-sp) = 70 K/W vs. typical 90 K/W). No layout or schematic changes are needed for drop-in replacement in automotive upgrades.
BZT52H-C11-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZT52H-Q
- Package/Case:
- SOD-123F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 11 V
- Tolerance:
- ±5.45%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 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
BZT52H-C11-QX FAQ
1.How can I place an order for BZT52H-C11-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52H-C11-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 BZT52H-C11-QX reliable?
The price and inventory of BZT52H-C11-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52H-C11-QX is usually 5 days.
3.What payment methods are accepted for BZT52H-C11-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52H-C11-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52H-C11-QX?
BZT52H-C11-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52H-C11-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 BZT52H-C11-QX?
For technical support, including BZT52H-C11-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52H-C11-QX requirements.
6.How does Aetrix verify that BZT52H-C11-QX is sourced from the original manufacturer or authorized distributors?
All BZT52H-C11-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 BZT52H-C11-QX meets industry standards.
7.What is the process for return or replacement of BZT52H-C11-QX?
All BZT52H-C11-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZT52H-C11-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 BZT52H-C11-QX part is unused and in its original packaging.
Return procedure for BZT52H-C11-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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