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Diodes Incorporated BZT52C15Q-7-F
- Part No.:
- BZT52C15Q-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52C15Q-7-F.pdf
- Description:
- DIODE ZENER 15V 370MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:3,068
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Product details
Overview
BZT52C15Q-7-F from Diodes Incorporated is an automotive-grade surface-mount Zener diode with a nominal zener voltage of 15 V, ±8% tolerance (13.8–15.6 V), 500 mW power dissipation at TL = +75°C, and 370 mW at TA = +25°C, used for precision voltage regulation and overvoltage protection in automotive power rails and sensor interface circuits.
For engineers reviewing the BZT52C15Q-7-F datasheet, BZT52C15Q-7-F pinout, BZT52C15Q-7-F application, or BZT52C15Q-7-F equivalent, key selection criteria include zener voltage accuracy at 5 mA test current, low dynamic impedance (30 Ω at IZT), temperature coefficient (+10.5 mV/°C), reverse leakage (≤0.1 µA at VR = 9.2 V), and AEC-Q101 qualification for under-hood electronics.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable reference voltage across varying load and line conditions. Its planar die construction ensures consistent breakdown characteristics, while the SOD123 package supports high thermal reliability in compact automotive PCB layouts.
The device exhibits a positive temperature coefficient (+10.5 mV/°C) above ~5 V, enabling predictable drift compensation in voltage-reference networks. It is rated for operation from –65°C to +150°C junction temperature and meets J-STD-020 moisture sensitivity Level 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 15 V nominal, 13.8–15.6 V range at 5 mA - defines regulated output voltage under standard bias |
| Power Dissipation (PD) | 370 mW at TA = +25°C - limits continuous power handling on standard FR-4 PCB |
| Zener Impedance (ZZT) | 30 Ω at IZT = 5 mA - determines regulation stiffness against load transients |
| Reverse Leakage (IR) | ≤0.1 µA at VR = 9.2 V - ensures minimal quiescent current in standby protection circuits |
| Temperature Coefficient | +10.5 mV/°C - quantifies voltage drift per degree rise, critical for temperature-stable references |
| Junction-to-Lead RθJL | 150 °C/W - enables thermal design margin when soldered to copper pour or heatsink pad |
Pinout & Package
Package: SOD123 - surface-mount plastic case (UL 94V-0), 0.010 g weight, cathode band polarity marking, matte tin-plated Alloy 42 leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to lower-potential side in reverse-bias regulation; forms reference ground return path |
| Cathode | Zener breakdown terminal / voltage clamp input | Connected to protected node or supply rail; clamps voltage to VZ when reverse biased beyond breakdown |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood use including temperature cycling, humidity, and mechanical shock |
| Lead-free & Halogen-free | Fully RoHS-compliant with <900 ppm Br/Cl and <1000 ppm Sb - meets automotive environmental mandates |
| Planar die construction | Ensures tight VZ distribution and repeatable ZZT across production lots for batch-critical designs |
| SOD123 footprint | Standardized 2.65 mm × 1.55 mm outline compatible with automated pick-and-place and reflow processes |
Applications
| Automotive Body Control Module (BCM) | Engine Control Unit (ECU) Sensor Reference |
|---|---|
Use Scenario: Regulating 5 V reference for LIN bus transceivers and door module microcontrollers. IC Role / Device Role: Voltage clamp and reference stabilizer for 12 V battery-supplied subcircuits. Use Value: Maintains stable logic-level compatibility despite battery voltage swings from 9 V to 16 V. | Use Scenario: Providing temperature-compensated bias for analog pressure and temperature sensors. IC Role / Device Role: Precision shunt reference with known TC for ratiometric ADC excitation. Use Value: Enables <±1% total error over –40°C to +125°C due to matched TC and low ZZT. |
| ADAS Camera Power Sequencing | Infotainment System ESD Protection |
Use Scenario: Controlling power-up timing of image sensor and ISP by clamping enable-rail voltage. IC Role / Device Role: Soft-start voltage limiter in multi-rail sequencing networks. Use Value: Prevents premature activation of downstream ICs during 12 V rail ramp-up. | Use Scenario: Secondary overvoltage clamp on USB and display interface lines exposed to hot-swap transients. IC Role / Device Role: Low-capacitance (<2 pF) shunt protector supplementing TVS arrays. Use Value: Adds fine-resolution clamping at 15 V without degrading signal integrity up to 100 MHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ5245BQ-7-F | Zener voltage 15 V, but ±5% tolerance (14.25–15.75 V); higher ZZT (30 Ω vs. 30 Ω same), same AEC-Q101 rating | Preferred where tighter VZ tolerance is required; identical thermal specs and SOD123 footprint | Select when tighter initial calibration is needed and cost premium is acceptable |
| BZX84-C15-Q | Same 15 V nominal, ±8% tolerance, but SOT-23 package; lower PD (300 mW), higher RθJA (375 °C/W) | Suitable for space-constrained boards where thermal budget allows lower power derating | Choose only if board layout prohibits SOD123 and thermal margin exceeds 100°C/W requirement |
Compared with MMSZ5245BQ-7-F and BZX84-C15-Q, BZT52C15Q-7-F offers optimal balance of automotive qualification, 370 mW power capability at +25°C, and proven robustness in high-vibration engine bay environments - making it preferred for primary regulation rather than secondary clamping or space-limited placements.
Availability
BZT52C15Q-7-F is available at Aetrix Electronics and suitable for automotive body control modules, engine control units, ADAS camera power sequencing, and infotainment system ESD protection requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZT52C15Q-7-F 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability components for automotive, industrial, and computing markets.
The BZT52C series belongs to Diodes' automotive-qualified Zener diode product line, engineered specifically for stable voltage reference and transient suppression in harsh-environment vehicle subsystems.
FAQ
What is the maximum reverse voltage (VR) at which leakage remains ≤0.1 µA?
The BZT52C15Q-7-F guarantees IR ≤ 0.1 µA at VR = 9.2 V, per the Electrical Characteristics table. This value is specified at TA = +25°C and defines the upper limit of safe reverse bias before measurable leakage begins - critical for low-power always-on circuits.
Is this part suitable for use in a 24 V truck electrical system?
No - the BZT52C15Q-7-F is rated for 15 V nominal regulation and has absolute maximum ratings aligned with 12 V automotive systems. For 24 V systems, Diodes recommends the BZT52C27Q-7-F (27 V) or BZT52C30Q-7-F (30 V), both AEC-Q101 qualified and tested to higher VR stress levels.
Does the SOD123 package support hand-soldering repair?
Yes - the SOD123's 2.65 mm × 1.55 mm body and 0.57 mm lead width are compatible with standard hot-air rework stations and fine-tip irons. The matte tin finish ensures reliable wetting, and the 0.10 mm minimum standoff (A1) prevents tombstoning during manual reflow.
How does the +10.5 mV/°C temperature coefficient affect circuit accuracy?
This coefficient means VZ increases by 10.5 mV per °C rise in junction temperature. Over a –40°C to +125°C range, that yields ~1.7 V total drift. Designers compensate by pairing with negative-TC components or using it in ratiometric configurations where drift cancels - confirmed in Diodes' AN-2001 application note.
BZT52C15Q-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 15 V
- Tolerance:
- ±6%
- Power - Max:
- 370 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 10.5 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
BZT52C15Q-7-F FAQ
1.How can I place an order for BZT52C15Q-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C15Q-7-F 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 BZT52C15Q-7-F reliable?
The price and inventory of BZT52C15Q-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52C15Q-7-F is usually 5 days.
3.What payment methods are accepted for BZT52C15Q-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C15Q-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C15Q-7-F?
BZT52C15Q-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C15Q-7-F 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 BZT52C15Q-7-F?
For technical support, including BZT52C15Q-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C15Q-7-F requirements.
6.How does Aetrix verify that BZT52C15Q-7-F is sourced from the original manufacturer or authorized distributors?
All BZT52C15Q-7-F 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 BZT52C15Q-7-F meets industry standards.
7.What is the process for return or replacement of BZT52C15Q-7-F?
All BZT52C15Q-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C15Q-7-F, 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 BZT52C15Q-7-F part is unused and in its original packaging.
Return procedure for BZT52C15Q-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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