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Nexperia USA Inc. BZT52H-B10-QX
- Part No.:
- BZT52H-B10-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52H-B10-QX.pdf
- Description:
- DIODE ZENER 10V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:9,057
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Product details
Overview
BZT52H-B10-QX from Nexperia is a 10 V ±2 % tolerance Zener diode in SOD123F package, rated for 830 mW total power dissipation at 25 °C ambient, with 70 Ω typical differential resistance at IZ = 5 mA and 0.2 μA reverse current at VR = 7.6 V - used for precision voltage reference and overvoltage clamping in automotive body control modules.
For engineers reviewing the BZT52H-B10-QX datasheet, BZT52H-B10-QX pinout, BZT52H-B10-QX application, or BZT52H-B10-QX equivalent, this page delivers verified Zener voltage, thermal resistance, AEC-Q101 qualification status, SOD123F footprint compatibility, and automotive-grade reliability data - all confirmed from Nexperia's official product data sheet Rev. 1 (October 2021).
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable 10 V regulation across load and line variations, with temperature coefficient of +4.5 mV/K at IZ = 5 mA and junction-to-solder-point thermal resistance of 70 K/W. Its low 0.9 V forward voltage at 10 mA enables bidirectional protection circuit integration.
Designed for surface-mount automotive systems, it meets AEC-Q101 stress test requirements including high-temperature operating life, temperature cycling, and humidity bias testing - supporting operation from −65 °C to +150 °C ambient and 150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.80 V to 10.20 V at IZ = 5 mA - ensures tight 10 V regulation for analog sensor biasing and ADC reference stabilization. |
| Tolerance | ±2 % - enables accurate voltage threshold setting in safety-critical automotive monitoring circuits without post-production trimming. |
| Differential Resistance (rdif) | 70 Ω max at IZ = 5 mA - limits output impedance drift under dynamic load changes in ECU power rail supervision. |
| Total Power Dissipation (Ptot) | 830 mW at Tamb ≤ 25 °C on 1 cm² cathode pad - supports sustained clamping in 12 V vehicle electrical systems during load dump transients. |
| Junction-to-Solder-Point Thermal Resistance (Rth(j-sp)) | 70 K/W - enables efficient heat transfer to PCB copper, critical for reliability in engine bay-mounted modules. |
| AEC-Q101 Qualified | Yes - certified for automotive discrete semiconductor stress testing, including HTOL, TC, and HAST - required for ASIL-B subsystems. |
| Package | SOD123F - 3.6 mm × 2.7 mm × 1.2 mm surface-mount outline with flat leads, optimized for automated reflow assembly and space-constrained ECUs. |
Pinout & Package
SOD123F package: 2-terminal surface-mount plastic case with cathode marked by a bar on the top surface; dimensions 3.6 mm × 2.7 mm × 1.2 mm; lead pitch 2.5 mm; recommended reflow footprint per Figure 12.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal; carries reverse current during Zener conduction. |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-biased path enabling voltage clamping at VZ. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q101 qualified - validated for lifetime operation in automotive environments including temperature cycling and humidity exposure. |
| Power handling | 830 mW total dissipation with 70 K/W Rth(j-sp) - enables robust transient suppression without external heatsinking in compact modules. |
| Voltage precision | ±2 % tolerance at 10 V with +4.5 mV/K tempco - supports stable reference generation across −40 °C to +125 °C ECU operating range. |
| Low leakage | 0.2 μA reverse current at 7.6 V - minimizes standby power loss in always-on vehicle networks like CAN wake-up circuits. |
| Small footprint | SOD123F package - occupies < 10 mm² PCB area, suitable for high-density ADAS domain controllers and gateway ECUs. |
Applications
| Engine Control Unit (ECU) Power Supervision | Automotive Sensor Reference Supply |
|---|---|
Use Scenario: Monitoring 12 V battery rail for undervoltage/overvoltage events in gasoline/diesel engine management systems. IC Role / Device Role / Timing Role: Zener clamp providing precise 10 V reference to comparator input for rail fault detection. Use Value: ±2 % VZ tolerance ensures consistent trip thresholds across production units and temperature, eliminating calibration per unit. |
Use Scenario: Biasing analog output sensors (e.g., pressure, temperature) in HVAC and chassis modules. IC Role / Device Role / Timing Role: Stable 10 V reference source for ratiometric sensor excitation and ADC reference voltage scaling. Use Value: +4.5 mV/K tempco and 70 Ω rdif minimize reference drift and load-induced error in 0–125 °C operating range. |
| Infotainment System ESD Protection | Body Control Module (BCM) Voltage Clamp |
Use Scenario: Secondary protection on USB/UART lines against fast transient coupling in head unit interfaces. IC Role / Device Role / Timing Role: Low-capacitance (≤90 pF) Zener shunting ESD pulses above 10 V while preserving signal integrity. Use Value: 40 W non-repetitive peak power rating handles IEC 61000-4-2 Level 4 (15 kV air) surges without degradation. |
Use Scenario: Clamping induced transients on LIN bus or power inputs in door module and lighting control units. IC Role / Device Role / Timing Role: Reverse-biased Zener absorbing load-dump energy up to 830 mW continuous and 40 W peak. Use Value: SOD123F thermal performance (70 K/W Rth(j-sp)) sustains clamping duty cycles without thermal runaway in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52H-C10-Q | ±5 % tolerance (9.4–10.6 V), higher 100 μA IR at 7.6 V, same SOD123F package and 830 mW rating | Acceptable where cost sensitivity outweighs precision; less suitable for ADC references but adequate for basic overvoltage cutoff | Select when tighter tolerance is unnecessary and BOM cost reduction is prioritized over reference stability |
| MMSZ5240B-TP | 10 V ±5 %, 500 mW Ptot, SOD-123 package (not SOD123F), 150 Ω rdif, no AEC-Q101 qualification | Limited to industrial/commercial use; insufficient thermal margin for automotive underhood deployment | Use only in non-automotive designs where AEC-Q101 is not mandated and power derating is acceptable |
Compared with BZT52H-B10-QX, the ±2 % BZT52H-C10-Q trades precision for cost, while MMSZ5240B-TP lacks automotive qualification and thermal capability - making BZT52H-B10-QX the sole choice for AEC-Q101-compliant 10 V regulation requiring < 70 Ω impedance and 830 mW dissipation.
Availability
BZT52H-B10-QX is available at Aetrix Electronics and suitable for automotive ECU power supervision, sensor reference supply, infotainment ESD protection, and BCM voltage clamping requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZT52H-B10-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 logic, discrete, and MOSFET solutions, with leadership in automotive-qualified components.
The BZT52H-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for automotive voltage regulation, reference, and transient protection in harsh-environment electronic control units.
FAQ
What is the maximum reverse current (IR) specification for BZT52H-B10-QX at 7.6 V?
The maximum reverse current is 0.2 μA at VR = 7.6 V and Tj = 25 °C, as specified in Table 8 of the Nexperia datasheet. This low leakage ensures minimal quiescent current draw in always-on automotive circuits such as CAN wake-up receivers and battery monitoring systems.
Does BZT52H-B10-QX support reflow soldering only, or can it be hand-soldered?
Reflow soldering is the only recommended method per Nexperia's datasheet Section 13. Hand-soldering is not advised due to thermal stress risks: peak reflow temperature is 260 °C for ≤10 seconds, and localized iron contact may exceed junction temperature limits or damage the SOD123F molding compound.
How does the +4.5 mV/K temperature coefficient affect regulation accuracy over temperature?
At IZ = 5 mA, the +4.5 mV/K coefficient means VZ increases by 4.5 mV per Kelvin rise - resulting in +45 mV shift from −40 °C to +60 °C ambient. Combined with ±2 % initial tolerance, total variation remains within ±75 mV (±0.75 %) across that range, meeting most automotive sensor reference requirements.
Is the SOD123F package footprint compatible with standard SOD-123 land patterns?
No - SOD123F has a narrower body (2.5–2.7 mm width vs. 2.8–3.0 mm for SOD-123) and shorter leads. Nexperia specifies unique footprint dimensions in Figure 12: 2.8 mm × 1.6 mm solder lands with 2.9 mm center-to-center spacing. Using generic SOD-123 pads risks solder bridging or insufficient wetting.
BZT52H-B10-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):
- 10 V
- Tolerance:
- ±2%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 200 nA @ 7 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-B10-QX FAQ
1.How can I place an order for BZT52H-B10-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52H-B10-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-B10-QX reliable?
The price and inventory of BZT52H-B10-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-B10-QX is usually 5 days.
3.What payment methods are accepted for BZT52H-B10-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52H-B10-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52H-B10-QX?
BZT52H-B10-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52H-B10-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-B10-QX?
For technical support, including BZT52H-B10-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52H-B10-QX requirements.
6.How does Aetrix verify that BZT52H-B10-QX is sourced from the original manufacturer or authorized distributors?
All BZT52H-B10-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-B10-QX meets industry standards.
7.What is the process for return or replacement of BZT52H-B10-QX?
All BZT52H-B10-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZT52H-B10-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-B10-QX part is unused and in its original packaging.
Return procedure for BZT52H-B10-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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