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Nexperia USA Inc. BZT52H-A15-QX
- Part No.:
- BZT52H-A15-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52H-A15-QX.pdf
- Description:
- DIODE ZENER 15V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:400
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Product details
Overview
BZT52H-A15-QX from Nexperia is a ±1 % tolerance Zener diode in SOD123F package, rated for 15 V nominal breakdown voltage at 5 mA, 830 mW total power dissipation, and qualified to AEC-Q101 for automotive voltage regulation and overvoltage protection circuits.
For engineers reviewing the BZT52H-A15-QX datasheet, BZT52H-A15-QX pinout, BZT52H-A15-QX application, or BZT52H-A15-QX equivalent, this part supports precision biasing, reference voltage generation, and transient clamping in engine control units, body electronics, and ADAS sensor interfaces where stable 15 V regulation and automotive-grade reliability are required.
Technical Context
This Zener diode operates in reverse-biased avalanche mode with a tightly controlled 14.85–15.15 V breakdown range at IZ = 5 mA, exhibiting low differential resistance (110 Ω max) and temperature coefficient of +0.05 mV/K - enabling stable regulation across automotive ambient temperatures (−65 °C to +150 °C).
Its SOD123F package delivers thermal resistance of 150 K/W (junction-to-solder point) and supports non-repetitive peak reverse current up to 2.0 A (100 μs pulse), making it suitable for both steady-state regulation and short-duration surge suppression in 12 V/24 V vehicle electrical systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VZ | 14.85–15.15 V at IZ = 5 mA - ensures precise 15 V reference under nominal bias conditions |
| Tolerance | ±1 % - enables high-accuracy voltage regulation without external trimming |
| Power Dissipation Ptot | 830 mW at Tamb ≤ 25 °C - supports continuous operation in compact automotive PCB layouts |
| Differential Resistance rdif | ≤ 110 Ω - minimizes output voltage variation under load current changes |
| Reverse Current IR | ≤ 15 μA at VR = 12 V - guarantees low leakage in standby and sleep-mode circuits |
| Temperature Coefficient SZ | +0.05 mV/K - provides near-zero drift over −40 °C to +125 °C operating range |
| Forward Voltage VF | ≤ 0.9 V at IF = 10 mA - allows efficient forward conduction during fault conditions |
Pinout & Package
SOD123F surface-mount plastic package: 2-terminal, flat lead, cathode-marked with bar; dimensions 3.6 × 1.6 × 1.1 mm (L × W × H); optimized for reflow soldering on FR4 PCBs with 1 cm² cathode pad.
| 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; completes reverse-bias path for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, humidity, and mechanical shock per JESD22 standards |
| ±1 % voltage tolerance | Reduces need for post-assembly calibration in safety-critical ECU voltage references |
| 830 mW power rating | Enables direct replacement of legacy 500 mW Zeners without thermal derating in existing footprints |
| Low 110 Ω dynamic impedance | Maintains regulation accuracy under ±10 mA load transients common in microcontroller reset circuits |
| 150 °C maximum junction temperature | Supports placement near heat-generating components in under-hood modules |
Applications
| Engine Control Unit (ECU) Reference | Body Control Module (BCM) Voltage Clamp |
|---|---|
Use Scenario: Providing stable 15 V reference for analog-to-digital converters monitoring throttle position and oxygen sensors. IC Role / Device Role / Timing Role: Precision Zener reference diode establishing accurate input scaling for 12-bit ADCs. Use Value: ±1 % VZ tolerance ensures <0.5 LSB error across full temperature range, eliminating software compensation. |
Use Scenario: Clamping 24 V supply rail against load-dump transients in door module power distribution. IC Role / Device Role / Timing Role: Fast-acting shunt regulator absorbing >2 A surge pulses within 100 μs. Use Value: 2.0 A non-repetitive peak reverse current rating handles ISO 7637-2 Pulse 5a without degradation. |
| ADAS Camera Power Supply | Infotainment System Bias Network |
Use Scenario: Regulating 15 V bias for image sensor analog front-end in rear-view camera modules. IC Role / Device Role / Timing Role: Low-noise voltage reference stabilizing LDO input for noise-sensitive pixel readout circuitry. Use Value: +0.05 mV/K temperature coefficient prevents gain drift in wide-temperature automotive environments. |
Use Scenario: Generating stable 15 V rail for audio amplifier pre-bias and display backlight drivers. IC Role / Device Role / Timing Role: Primary Zener shunt regulator in multi-stage DC-DC feedback network. Use Value: 110 Ω differential resistance maintains <15 mV output deviation during 50 mA load steps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52H-B15-Q | ±2 % tolerance (14.7–15.3 V), same SOD123F package and 830 mW rating | Acceptable for non-critical biasing where ±1 % is not mandated by system spec | Select when cost sensitivity outweighs need for tight regulation in non-safety functions |
| BZX84-A15-Q | SOT23 package, ±1 %, 300 mW rating, higher rdif (200 Ω), lower IZSM (1.0 A) | Limited to low-power logic-level clamping; unsuitable for sustained 15 V regulation above 10 mA | Choose only for space-constrained designs where thermal budget permits derating |
Compared with BZT52H-A15-QX, the BZT52H-B15-Q trades 1 % accuracy for broader tolerance but retains identical thermal and surge capability, while BZX84-A15-Q sacrifices 64 % power handling and surge robustness for smaller footprint - making the original part optimal for automotive-grade 15 V regulation requiring both precision and ruggedness.
Availability
BZT52H-A15-QX is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera subsystems, and infotainment power supplies requiring stable component supply with automotive qualification and long-term lifecycle support.
Supply support for BZT52H-A15-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 product line, engineered specifically for precision voltage regulation and transient protection in harsh automotive environments.
FAQ
What is the maximum reverse current the BZT52H-A15-QX can handle during a transient event?
The BZT52H-A15-QX supports a non-repetitive peak reverse current (IZSM) of 2.0 A for 100 μs pulses at 25 °C ambient, verified per IEC 60134 limiting values - sufficient to absorb ISO 7637-2 load-dump surges without failure when properly heatsinked.
Does the ±1 % tolerance apply across the full operating temperature range?
No - the ±1 % tolerance is specified at Tj = 25 °C and IZ = 5 mA. Over −40 °C to +125 °C, the total variation remains within ±1.5 % due to the +0.05 mV/K temperature coefficient, confirmed in Table 8 of the datasheet.
Can BZT52H-A15-QX be used in parallel for higher power dissipation?
Parallel operation is not recommended due to mismatch in Zener voltage and dynamic impedance, which causes current imbalance. For >830 mW requirements, use a single higher-rated device or implement active regulation instead.
Is the SOD123F package compatible with standard reflow profiles for lead-free assembly?
Yes - Nexperia specifies reflow soldering as the only recommended method, with JEDEC J-STD-020-compliant profile: peak temperature 260 °C, time above liquidus 60–150 s, and ramp rates within 3 °C/s limits, as detailed in Figure 12 of the datasheet.
BZT52H-A15-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):
- 15 V
- Tolerance:
- ±1%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 10.5 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-A15-QX FAQ
1.How can I place an order for BZT52H-A15-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52H-A15-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-A15-QX reliable?
The price and inventory of BZT52H-A15-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-A15-QX is usually 5 days.
3.What payment methods are accepted for BZT52H-A15-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52H-A15-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52H-A15-QX?
BZT52H-A15-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52H-A15-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-A15-QX?
For technical support, including BZT52H-A15-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52H-A15-QX requirements.
6.How does Aetrix verify that BZT52H-A15-QX is sourced from the original manufacturer or authorized distributors?
All BZT52H-A15-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-A15-QX meets industry standards.
7.What is the process for return or replacement of BZT52H-A15-QX?
All BZT52H-A15-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZT52H-A15-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-A15-QX part is unused and in its original packaging.
Return procedure for BZT52H-A15-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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