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Nexperia USA Inc. BZT52H-A7V5-QX
- Part No.:
- BZT52H-A7V5-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52H-A7V5-QX.pdf
- Description:
- DIODE ZENER 7.5V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:2,047
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Product details
Overview
BZT52H-A7V5-QX from Nexperia is a 7.5 V ±1 % tolerance Zener diode in SOD123F package, rated for 830 mW total power dissipation at 25 °C ambient, with 80 Ω typical differential resistance at IZ = 5 mA and 10 μA reverse current at VR = 5.7 V, used for precision voltage regulation in automotive power supply rails.
For engineers reviewing the BZT52H-A7V5-QX datasheet, BZT52H-A7V5-QX pinout, BZT52H-A7V5-QX application, or BZT52H-A7V5-QX equivalent, this page delivers verified Zener voltage, thermal resistance (Rth(j-sp) = 70 K/W), temperature coefficient (+2.5 to +5.3 mV/K), non-repetitive surge capability (4.0 A at 100 μs), and AEC-Q101 qualification status - all critical for automotive-grade voltage reference design.
Technical Context
This Zener diode operates in reverse breakdown mode with tightly controlled 7.42–7.58 V nominal Zener voltage at 5 mA test current, exhibiting low dynamic impedance (80 Ω max) and stable temperature coefficient behavior across its operating range. Its junction-to-solder-point thermal resistance of 70 K/W enables reliable thermal management on FR4 PCBs with 1 cm² cathode pad.
The device supports automotive applications per AEC-Q101 qualification, with maximum junction temperature of 150 °C, storage temperature range of −65 to +150 °C, and non-repetitive peak reverse current of 4.0 A under 100 μs square-wave surge conditions at Tamb = 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.42–7.58 V at IZ = 5 mA - defines precise regulation point for 7.5 V reference circuits |
| Tolerance | ±1 % - ensures tight voltage accuracy without post-production trimming |
| Differential Resistance (rdif) | 80 Ω max at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Reverse Current (IR) | 10 μA max at VR = 5.7 V - guarantees low leakage in standby or low-power modes |
| Total Power Dissipation (Ptot) | 830 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling on standard FR4 layout |
| Temperature Coefficient (SZ) | +2.5 to +5.3 mV/K at IZ = 5 mA - quantifies voltage drift over temperature for stability analysis |
| Non-repetitive Peak Reverse Current (IZSM) | 4.0 A at tp = 100 μs - supports transient overvoltage clamping in automotive ESD/surge protection |
Pinout & Package
SOD123F surface-mount plastic package: 2-terminal, flat lead, small outline (3.6 × 2.7 × 1.2 mm), 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-biased current during regulation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes bias path for Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use including engine control units, body electronics, and ADAS power domains |
| ±1 % Zener voltage tolerance | Enables single-part replacement of higher-cost trimmed references in cost-sensitive 7.5 V regulator designs |
| 830 mW power rating | Supports >100 mA regulation current at 7.5 V with adequate derating margin on standard PCB layouts |
| 70 K/W junction-to-solder-point thermal resistance | Allows direct thermal coupling to copper pour for improved reliability in high-temperature under-hood environments |
| Low 10 μA reverse leakage at 5.7 V | Minimizes quiescent current draw in always-on vehicle modules such as CAN transceiver bias networks |
Applications
| Automotive Engine Control Unit (ECU) Reference | Infotainment System Power Sequencing |
|---|---|
Use Scenario: Providing stable 7.5 V reference for analog sensor signal conditioning and ADC biasing in gasoline/diesel ECU mainboards. IC Role / Device Role / Timing Role: Zener voltage reference source for op-amp feedback networks and microcontroller analog peripherals. Use Value: ±1 % tolerance and +2.5 to +5.3 mV/K temperature coefficient ensure <±15 mV drift over −40 to +125 °C, meeting ASIL-B sensor accuracy requirements. |
Use Scenario: Generating clean 7.5 V auxiliary rail for USB-C PD controller sequencing logic and display backlight drivers. IC Role / Device Role / Timing Role: Precision shunt regulator stabilizing intermediate supply before LDO input stage. Use Value: 80 Ω differential resistance maintains <0.5 % load regulation across 1–50 mA output current swing, preventing brownout during hot-plug events. |
| ADAS Camera Module Bias Network | Body Control Module (BCM) Wake-Up Circuit |
Use Scenario: Supplying regulated bias voltage to image sensor analog front-end and ISP core in rear-view camera modules. IC Role / Device Role / Timing Role: Low-noise Zener reference for PLL VCO tuning voltage and clock buffer biasing. Use Value: 10 μA reverse leakage at 5.7 V minimizes standby current in always-on vision systems, extending battery life during parking mode. |
Use Scenario: Enabling low-threshold wake-up detection via comparator input referenced to 7.5 V in BCM sleep-state monitoring circuitry. IC Role / Device Role / Timing Role: Stable voltage reference for window comparator threshold setting in LIN bus wake-up receivers. Use Value: AEC-Q101 qualification and 150 °C max junction temperature guarantee operation under hood temperatures up to +105 °C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52H-B7V5-Q | ±2 % tolerance (7.35–7.65 V), same SOD123F package and 830 mW rating | Acceptable where tighter voltage accuracy is not required, e.g., non-critical power rail supervision | Select when cost reduction is prioritized over 7.5 V reference precision |
| MMSZ5236B-TP | 7.5 V ±5 %, SOD-123 package, 500 mW Ptot, 100 Ω rdif, no AEC-Q101 qualification | Limited to industrial or consumer applications; unsuitable for automotive due to missing qualification | Use only in non-automotive designs where thermal and reliability margins are less stringent |
Compared with BZT52H-A7V5-QX, the BZT52H-B7V5-Q trades ±1 % accuracy for lower unit cost while retaining AEC-Q101 compliance, whereas MMSZ5236B-TP lacks automotive qualification and offers lower power handling - making the original part uniquely suited for safety-critical 7.5 V reference roles requiring both precision and qualification.
Availability
BZT52H-A7V5-QX is available at Aetrix Electronics and suitable for automotive engine control units, infotainment power sequencing, and ADAS camera module bias networks requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZT52H-A7V5-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 technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and mobile markets.
The BZT52H-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode product line, engineered specifically for automotive voltage regulation, reference, and overvoltage protection functions demanding robust thermal performance and long-term stability.
FAQ
What is the maximum continuous forward current rating for BZT52H-A7V5-QX?
The device is a Zener diode intended for reverse-bias operation; its forward current rating is not specified for continuous conduction. The absolute maximum forward current is 250 mA per limiting values table, but sustained forward conduction exceeds design intent and risks thermal runaway. It must be operated in reverse breakdown for regulation.
Does BZT52H-A7V5-QX require a heatsink for 830 mW operation?
No external heatsink is required. At 830 mW dissipation, the SOD123F package achieves safe junction temperature when mounted on an FR4 PCB with a 1 cm² cathode copper pad (Rth(j-sp) = 70 K/W). Derating is necessary above 25 °C ambient - e.g., 600 mW max at 70 °C ambient.
How does the temperature coefficient affect regulation accuracy over −40 °C to +125 °C?
With a specified +2.5 to +5.3 mV/K coefficient at IZ = 5 mA, the Zener voltage shifts approximately +1.05 V to +1.85 V across this 165 K range. Combined with ±1 % initial tolerance, total variation remains within ±3.5 % - acceptable for non-precision analog references in automotive ECUs.
Can BZT52H-A7V5-QX replace older BZT52C7V5 in existing designs?
Yes, with caveats: both share 7.5 V nominal voltage and SOD123F package, but BZT52H-A7V5-QX offers ±1 % tolerance (vs. ±5 % for BZT52C7V5), lower rdif (80 Ω vs. 150 Ω), and AEC-Q101 qualification. Layout compatibility is confirmed; verify thermal margin if upgrading from legacy parts with higher Rth.
BZT52H-A7V5-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):
- 7.5 V
- Tolerance:
- ±1.07%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 5 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-A7V5-QX FAQ
1.How can I place an order for BZT52H-A7V5-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52H-A7V5-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-A7V5-QX reliable?
The price and inventory of BZT52H-A7V5-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-A7V5-QX is usually 5 days.
3.What payment methods are accepted for BZT52H-A7V5-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52H-A7V5-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52H-A7V5-QX?
BZT52H-A7V5-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52H-A7V5-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-A7V5-QX?
For technical support, including BZT52H-A7V5-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52H-A7V5-QX requirements.
6.How does Aetrix verify that BZT52H-A7V5-QX is sourced from the original manufacturer or authorized distributors?
All BZT52H-A7V5-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-A7V5-QX meets industry standards.
7.What is the process for return or replacement of BZT52H-A7V5-QX?
All BZT52H-A7V5-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZT52H-A7V5-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-A7V5-QX part is unused and in its original packaging.
Return procedure for BZT52H-A7V5-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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