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Nexperia USA Inc. BZT52H-A62-QX
- Part No.:
- BZT52H-A62-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52H-A62-QX.pdf
- Description:
- DIODE ZENER 62V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:5,682
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Product details
Overview
BZT52H-A62-QX from Nexperia is a precision Zener voltage regulator diode in SOD123F package, rated for 62 V nominal breakdown voltage at 2 mA test current, ±1 % tolerance, 830 mW total power dissipation, and qualified to AEC-Q101 for automotive voltage reference and overvoltage protection circuits.
For engineers reviewing the BZT52H-A62-QX datasheet, BZT52H-A62-QX pinout, BZT52H-A62-QX application, or BZT52H-A62-QX equivalent, this device serves as a stable shunt reference in power supply feedback loops, ECU voltage monitoring, and CAN/LIN bus clamp networks where tight regulation and automotive-grade reliability are required.
Technical Context
This Zener diode operates in reverse-bias breakdown mode with a specified 62 V nominal Zener voltage (VZ) at IZ = 2 mA, differential resistance of 400 Ω max, and temperature coefficient of +0.05 mV/K - indicating near-zero thermal drift in mid-voltage range. It exhibits low reverse leakage (<1 μA at VR = 50 V) and supports non-repetitive surge currents up to 0.3 A (100 μs pulse).
Designed for surface-mount use on FR4 PCBs with single-sided copper, its thermal resistance from junction to ambient is 330 K/W (free air) and 70 K/W to solder point, enabling reliable operation up to 150 °C junction temperature under defined layout conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 61.38 V to 62.62 V at IZ = 2 mA - ensures precise 62 V regulation within ±1 % tolerance for feedback sensing. |
| Differential Resistance (rdif) | ≤ 400 Ω - maintains stable output voltage under varying load current in shunt regulation applications. |
| Total Power Dissipation (Ptot) | 830 mW at Tamb ≤ 25 °C - defines maximum continuous DC power handling on standard FR4 PCB with 1 cm² cathode pad. |
| Reverse Current (IR) | < 1 μA at VR = 50 V - guarantees minimal quiescent current in standby or low-power monitoring circuits. |
| Non-repetitive Peak Reverse Current (IZSM) | 0.3 A for 100 μs - supports transient overvoltage clamping without failure in automotive load-dump scenarios. |
| Junction Temperature (Tj) | −65 °C to +150 °C - enables deployment in under-hood automotive environments with wide thermal cycling. |
| AEC-Q101 Qualified | Yes - validated for automotive discrete semiconductor stress testing including HTGB, HTRB, and temperature cycling. |
Pinout & Package
SOD123F surface-mount plastic package: 2-terminal, flat lead, small outline (3.6 mm × 2.7 mm × 1.2 mm), cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; polarity marker determines correct orientation for reverse-bias operation. |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes shunt path when reverse voltage exceeds VZ. |
Key Features
| Feature | Design Value |
|---|---|
| ±1 % Zener voltage tolerance | Enables high-accuracy voltage references without external trimming in automotive sensor signal conditioning. |
| AEC-Q101 qualification | Validates robustness for engine control units, body electronics, and ADAS modules requiring automotive-grade reliability. |
| 830 mW power rating | Supports sustained shunt regulation in 12 V/24 V systems with adequate PCB copper area for thermal management. |
| SOD123F footprint | Compatible with standard reflow processes and automated placement; occupies < 10 mm² board area for space-constrained ECUs. |
| Low temperature coefficient (+0.05 mV/K) | Minimizes VZ drift across −40 °C to +125 °C ambient, critical for battery voltage monitoring accuracy. |
Applications
| Engine Control Unit (ECU) Reference | Automotive LIN Bus Clamp |
|---|---|
Use Scenario: Provides stable 62 V reference for microcontroller ADC calibration and battery voltage scaling in gasoline/diesel ECUs. IC Role / Device Role / Timing Role: Shunt voltage reference connected between VBAT and ground, regulating sampling node against transients. Use Value: Maintains < ±0.62 V error over temperature and life, ensuring consistent fuel injection timing and OBD-II compliance. |
Use Scenario: Clamps LIN bus line during load dump events to protect transceiver ICs from >60 V surges. IC Role / Device Role / Timing Role: Bidirectional transient suppressor placed between LIN line and ground, conducting only above VZ. Use Value: Limits peak bus voltage to 62.6 V, preventing damage to NXP TJA1020 or Infineon TLE7259-2G LIN transceivers. |
| 12 V System Overvoltage Protection | Infotainment Power Sequencing |
Use Scenario: Guards downstream DC-DC converters in vehicle infotainment head units against alternator overvoltage (>18 V). IC Role / Device Role / Timing Role: Primary shunt limiter in pre-regulator stage, diverting excess current before LDO input. Use Value: Activates at 62 V with <100 ns response, absorbing 40 W surge energy (100 μs) without degradation. |
Use Scenario: Enables controlled power-up sequencing by holding reset line low until main 5 V rail reaches regulation. IC Role / Device Role / Timing Role: Zener-based voltage detector feeding comparator input to generate delayed enable signal. Use Value: Delivers 10 ms delay accuracy ±2% over −40 °C to +85 °C using fixed 62 V threshold and RC timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52H-B62-Q | ±2 % tolerance (60.8 V–63.2 V), same SOD123F package and 830 mW rating | Acceptable where system-level calibration compensates for wider VZ spread | Select for cost-sensitive body control modules where ±2 % meets functional safety requirements. |
| MMSZ5262B-TP | 62 V nominal, ±5 % tolerance, SOD-123 package, 500 mW Ptot, not AEC-Q101 qualified | Limited to non-safety-critical consumer or industrial applications | Choose only for prototyping or non-automotive designs where qualification is unnecessary and lower cost is prioritized. |
Compared with BZT52H-A62-QX, the BZT52H-B62-Q trades ±1 % precision for broader tolerance but retains full AEC-Q101 compliance, while MMSZ5262B-TP sacrifices both tolerance and qualification for reduced unit cost - making the original part optimal for production automotive systems demanding traceable 62 V regulation.
Availability
BZT52H-A62-QX is available at Aetrix Electronics and suitable for automotive ECU design, LIN/CAN bus protection, and 12 V/24 V power system overvoltage regulation requiring stable component supply and long-term lifecycle assurance.
Supply support for BZT52H-A62-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 automotive-qualified Zener diode product line, engineered specifically for stable voltage reference and transient suppression in harsh-temperature vehicle subsystems.
FAQ
What is the maximum continuous reverse current this diode can handle at 25 °C ambient?
At Tamb = 25 °C with proper PCB thermal design (1 cm² cathode pad), the BZT52H-A62-QX supports up to 13.4 mA continuous reverse current - calculated from Ptot = 830 mW and VZ ≈ 62 V. Derating applies above 25 °C per the 150 °C max Tj limit and Rth(j-a) = 330 K/W.
Is the SOD123F package compatible with standard reflow soldering profiles?
Yes - Nexperia specifies reflow soldering as the only recommended method for SOD123F. The package withstands peak temperatures up to 260 °C for ≤ 30 seconds, matching IPC/JEDEC J-STD-020D. Footprint dimensions (2.9 mm × 1.6 mm lands) and solder paste volume are defined in Figure 12 of the datasheet.
How does the +0.05 mV/K temperature coefficient impact regulation accuracy across −40 °C to +125 °C?
Over that 165 K range, the coefficient contributes ≤ ±8.25 mV drift (0.05 × 165), or ±0.013 % of 62 V - negligible versus the ±1 % initial tolerance. This stability makes it suitable for battery voltage monitors where absolute accuracy matters more than dynamic response.
Can this Zener diode replace older BZT52C62 in existing designs?
No - BZT52H-A62-QX has tighter ±1 % tolerance, higher 830 mW rating (vs. 500 mW for BZT52C62), and AEC-Q101 qualification. While electrically compatible in most circuits, its improved specs may alter thermal behavior or require layout review for heat dissipation in legacy footprints.
BZT52H-A62-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):
- 62 V
- Tolerance:
- ±1%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 140 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 43.4 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-A62-QX FAQ
1.How can I place an order for BZT52H-A62-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52H-A62-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-A62-QX reliable?
The price and inventory of BZT52H-A62-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-A62-QX is usually 5 days.
3.What payment methods are accepted for BZT52H-A62-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52H-A62-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52H-A62-QX?
BZT52H-A62-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52H-A62-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-A62-QX?
For technical support, including BZT52H-A62-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52H-A62-QX requirements.
6.How does Aetrix verify that BZT52H-A62-QX is sourced from the original manufacturer or authorized distributors?
All BZT52H-A62-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-A62-QX meets industry standards.
7.What is the process for return or replacement of BZT52H-A62-QX?
All BZT52H-A62-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZT52H-A62-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-A62-QX part is unused and in its original packaging.
Return procedure for BZT52H-A62-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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