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Nexperia USA Inc. BZT52H-C9V1-QX
- Part No.:
- BZT52H-C9V1-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52H-C9V1-QX.pdf
- Description:
- DIODE ZENER 9.05V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:8,011
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Product details
Overview
BZT52H-C9V1-QX from Nexperia is a ±5 % tolerance Zener diode in SOD123F package, rated for 9.1 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-C9V1-QX datasheet, BZT52H-C9V1-QX pinout, BZT52H-C9V1-QX application, or BZT52H-C9V1-QX equivalent, this page delivers verified Zener parameters, thermal resistance values, reverse current limits at 7.6 V, differential resistance under 100 Ω, and AEC-Q101 qualification status for automotive-grade design validation.
Technical Context
This Zener diode operates in reverse-bias breakdown mode with a specified 9.1 V nominal Zener voltage (VZ) at IZ = 5 mA, exhibiting a temperature coefficient of +3.8 mV/K to +7.0 mV/K across operating current range. Its low 100 Ω typical differential resistance ensures stable regulation under varying load conditions.
Designed for surface-mount use on FR4 PCBs, it features a cathode-marked SOD123F package with Rth(j-a) = 330 K/W (free air) and Rth(j-sp) = 70 K/W (cathode solder point), enabling reliable thermal management in compact automotive modules and power supply feedback networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.1 V nominal at IZ = 5 mA; ±5 % tolerance band (8.5 V to 9.6 V) defines regulation window for precision reference circuits. |
| Differential Resistance (rdif) | 100 Ω max at IZ = 5 mA; determines output impedance and load regulation error in shunt regulator topologies. |
| Reverse Current (IR) | 10 μA max at VR = 7.6 V; specifies leakage level below breakdown, critical for low-power standby circuit integrity. |
| Total Power Dissipation (Ptot) | 830 mW at Tamb ≤ 25 °C on 1 cm² cathode pad; sets maximum continuous DC power handling in thermally constrained layouts. |
| Junction Temperature (Tj) | 150 °C absolute maximum; defines upper thermal limit for sustained operation in under-hood automotive environments. |
| Thermal Resistance (Rth(j-sp)) | 70 K/W from junction to cathode solder point; enables accurate thermal modeling when mounted per recommended footprint. |
| AEC-Q101 Qualified | Yes - validated for automotive discrete semiconductor stress testing including HTGB, HTRB, and temperature cycling. |
Pinout & Package
SOD123F plastic surface-mount package: 2-terminal, flat lead, cathode marked by bar; dimensions 3.4–3.6 mm × 2.5–2.7 mm × 1.0–1.2 mm; optimized for reflow soldering only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node in shunt configuration; marking bar identifies this terminal for correct PCB orientation. |
| 2 | Anode (A) | Connected to ground or lower potential rail; reverse-biased current flows from cathode to anode during regulation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood use including high-temperature bias life and mechanical shock testing. |
| ±5 % Zener tolerance | Enables cost-optimized voltage reference without trimming, suitable for non-critical regulation in ECUs and body controllers. |
| 830 mW power rating | Supports higher-current shunt regulation than standard 500 mW Zeners, reducing need for external series resistors. |
| SOD123F footprint | Compact 3.5 × 2.6 mm outline allows dense placement in space-constrained ADAS sensor modules and infotainment power rails. |
| Low 100 Ω rdif | Minimizes output voltage drift under dynamic load changes, improving stability in feedback paths of DC-DC converters. |
Applications
| Automotive Body Control Module (BCM) | Infotainment Power Supply Reference |
|---|---|
Use Scenario: Stabilizing 9.1 V reference for microcontroller ADC input scaling in door module voltage monitoring. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise bias for analog sensing circuitry. Use Value: ±5 % tolerance and 100 Ω rdif ensure <10 mV full-scale error over temperature and load variation. |
Use Scenario: Regulating auxiliary 9.1 V rail for audio amplifier bias in head unit power tree. IC Role / Device Role / Timing Role: Low-noise Zener clamp maintaining stable supply for analog audio stages. Use Value: 10 μA IR at 7.6 V prevents standby current leakage that would degrade sleep-mode battery drain. |
| Engine Control Unit (ECU) Sensor Interface | ADAS Camera Module Voltage Clamp |
Use Scenario: Providing 9.1 V reference for oxygen sensor signal conditioning circuitry exposed to 125 °C ambient. IC Role / Device Role / Timing Role: High-temperature-stable Zener reference in analog front-end signal chain. Use Value: AEC-Q101 qualification and 150 °C Tj rating guarantee operation in engine bay mounting locations. |
Use Scenario: Clamping transient overvoltage on 9 V camera power line during load dump events. IC Role / Device Role / Timing Role: Fast-response shunt protector absorbing surge energy before downstream ICs. Use Value: 3.0 A non-repetitive peak reverse current (IZSM) handles ISO 7637-2 Pulse 5a surges without failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52H-B9V1-Q | ±2 % tolerance (8.92–9.28 V), 60 Ω rdif max, same SOD123F package and AEC-Q101 rating | Higher precision required in feedback loops where <±10 mV regulation error is mandatory | Select when tighter voltage control outweighs cost premium over ±5 % grade |
| MMSZ5240B-TP | ±5 % tolerance (8.65–9.55 V), 100 Ω rdif, SOD-123 package, no AEC-Q101 qualification | Consumer or industrial power supplies where automotive reliability not mandated | Choose for cost-sensitive non-automotive designs with identical electrical specs but relaxed qualification |
Compared with BZT52H-C9V1-QX, the BZT52H-B9V1-Q offers tighter regulation at higher cost and same thermal performance, while MMSZ5240B-TP matches key electrical specs but lacks AEC-Q101 validation-making it unsuitable for automotive deployment despite identical Zener voltage and tolerance.
Availability
BZT52H-C9V1-QX is available at Aetrix Electronics and suitable for automotive body control modules, infotainment power references, and ADAS camera clamping circuits requiring stable component supply with AEC-Q101 assurance.
Supply support for BZT52H-C9V1-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, headquartered in Nijmegen, Netherlands.
The BZT52H-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for automotive voltage regulation, reference, and transient suppression in harsh-environment electronic control units.
FAQ
What is the maximum reverse voltage (VR) at which leakage remains ≤10 μA?
Per Table 8, the BZT52H-C9V1-QX exhibits ≤10 μA reverse current at VR = 7.6 V. This value is derived from the "Max VR (V)" column for the C-tolerance group at 9.1 V nominal, confirming its suitability for applications requiring tight leakage control below breakdown threshold.
Can this Zener diode be used in parallel for higher power dissipation?
No-Zener diodes exhibit manufacturing variations in VZ and rdif, causing current imbalance when paralleled. The BZT52H-C9V1-QX is rated for 830 mW single-device operation; higher power must be achieved using a single higher-rated device or active regulation, not parallel connection.
Is the SOD123F package compatible with standard reflow profiles?
Yes-the datasheet explicitly states reflow soldering is the only recommended method. The SOD123F footprint in Figure 12 specifies 2.8 mm × 1.6 mm solder land dimensions and requires peak temperatures within JEDEC J-STD-020 Class 3a limits (260 °C max), fully compatible with standard lead-free reflow processes.
How does the +3.8 to +7.0 mV/K temperature coefficient affect regulation accuracy?
This positive coefficient means VZ increases with junction temperature. Over a 125 °C rise (25 °C to 150 °C), VZ shifts by +0.475 V to +0.875 V-critical for high-temperature applications like engine control; system-level compensation or derating must account for this drift to maintain regulation accuracy.
BZT52H-C9V1-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):
- 9.05 V
- Tolerance:
- ±6.08%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 6 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-C9V1-QX FAQ
1.How can I place an order for BZT52H-C9V1-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52H-C9V1-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-C9V1-QX reliable?
The price and inventory of BZT52H-C9V1-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-C9V1-QX is usually 5 days.
3.What payment methods are accepted for BZT52H-C9V1-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52H-C9V1-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52H-C9V1-QX?
BZT52H-C9V1-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52H-C9V1-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-C9V1-QX?
For technical support, including BZT52H-C9V1-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52H-C9V1-QX requirements.
6.How does Aetrix verify that BZT52H-C9V1-QX is sourced from the original manufacturer or authorized distributors?
All BZT52H-C9V1-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-C9V1-QX meets industry standards.
7.What is the process for return or replacement of BZT52H-C9V1-QX?
All BZT52H-C9V1-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZT52H-C9V1-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-C9V1-QX part is unused and in its original packaging.
Return procedure for BZT52H-C9V1-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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