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Diodes Incorporated BZT52HC9V1WFQ-7
- Part No.:
- BZT52HC9V1WFQ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52HC9V1WFQ-7.pdf
- Description:
- DIODE ZENER 9.1V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:5,565
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Product details
Overview
BZT52HC9V1WFQ from Diodes Incorporated is an AEC-Q101 qualified surface-mount Zener diode with nominal zener voltage 9.1 V, 5 mA test current, 10 Ω maximum zener impedance at 5 mA, ±7.0 mV/°C temperature coefficient, and 150 pF capacitance at 1 MHz. It operates in automotive power rail regulation and voltage reference circuits requiring stable clamping under transient conditions.
For engineers reviewing the BZT52HC9V1WFQ datasheet, BZT52HC9V1WFQ pinout, BZT52HC9V1WFQ application, or BZT52HC9V1WFQ equivalent, key selection criteria include zener voltage tolerance (8.5–9.6 V), low thermal resistance (150 °C/W on 1 cm² cathode pad), AEC-Q101 qualification, SOD123F package footprint, and reverse leakage ≤0.5 µA at 6 V.
Technical Context
This Zener diode functions as a precision voltage reference and overvoltage clamp in low-power analog and automotive subsystems. Its 9.1 V nominal breakdown supports 12 V rail monitoring, with tight 8.5–9.6 V tolerance ensuring reliable threshold detection across temperature.
The device uses planar epitaxial construction for stable zener characteristics and low noise. Its SOD123F package enables high power dissipation (830 mW with 1 cm² copper pad) while maintaining low profile (max height 1.15 mm), critical for space-constrained engine control units and ADAS modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.5–9.6 V at IZT = 5 mA - defines clamping range for 12 V system protection |
| Zener Impedance (ZZT) | 10 Ω max at 5 mA - ensures minimal voltage shift under load variation |
| Temperature Coefficient | ±3.8 to ±7.0 mV/°C - enables predictable drift compensation in reference designs |
| Capacitance (CT) | 150 pF max at 1 MHz, 0 V - limits high-frequency noise coupling in signal conditioning paths |
| Reverse Leakage (IR) | 0.5 µA max at VR = 6 V - guarantees low standby current in always-on automotive circuits |
| Power Dissipation (PD) | 830 mW with 1 cm² cathode pad - supports sustained clamping during load dump events |
| Thermal Resistance (RθJA) | 150 °C/W - allows operation up to +150 °C ambient in under-hood environments |
Pinout & Package
Package: SOD123F - flat-lead, low-profile surface-mount package with cathode band marking; dimensions: 2.70 mm length × 1.80 mm width × 1.15 mm height; weight ≈ 0.015 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward bias | Connected to lower-potential node in clamping configuration; must be routed with adequate current-carrying trace width |
| Cathode | Current exit terminal during forward bias; zener breakdown terminal | Marked by band; connects to protected node; requires ≥1 cm² copper pour for rated 830 mW dissipation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, humidity testing, and mechanical shock per IATF 16949 production standards |
| SOD123F package | Enables 30% higher power density vs. standard SOD123; compatible with automated pick-and-place and reflow soldering |
| Green compound (UL 94V-0) | Halogen- and antimony-free molding compound meets automotive environmental compliance without compromising flame resistance |
| Low zener impedance | 10 Ω max ensures <10 mV output variation across 1–10 mA load current changes in reference applications |
| Cathode band polarity marking | Unambiguous visual identification reduces assembly errors in high-volume automotive PCB manufacturing |
Applications
| Engine Control Unit (ECU) Power Monitoring | Infotainment System Voltage Reference |
|---|---|
|
Use Scenario: Monitoring 12 V battery rail for undervoltage/overvoltage faults in gasoline/diesel ECUs. IC Role / Device Role / Timing Role: Zener clamping element in comparator input stage, setting precise trip thresholds. Use Value: Tight 8.5–9.6 V tolerance and ±7.0 mV/°C TC enable accurate fault detection across −40 to +150 °C operating range. |
Use Scenario: Providing stable 9.1 V reference for ADC biasing and audio codec power sequencing. IC Role / Device Role / Timing Role: Precision voltage reference source for analog front-end circuitry. Use Value: Low 150 pF capacitance prevents high-frequency noise injection into sensitive audio signal paths. |
| ADAS Camera Module Protection | Body Control Module (BCM) Load Dump Clamp |
|
Use Scenario: Protecting image sensor supply lines from ESD and fast transients in rear-view camera systems. IC Role / Device Role / Timing Role: Transient voltage suppression element placed directly at connector interface. Use Value: 0.5 µA max reverse leakage preserves low-power sleep mode integrity in always-on vision systems. |
Use Scenario: Clamping induced voltage spikes during alternator load dump in BCM power distribution networks. IC Role / Device Role / Timing Role: Primary overvoltage clamp in 12 V rail protection circuit. Use Value: 830 mW power rating with 150 °C/W thermal resistance sustains clamping for >100 ms at 150 °C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ5240B-TP (Micro Commercial) | Zener voltage 10 V (9.5–10.5 V), 17 Ω ZZT, no AEC-Q101 qualification | Rated for commercial temperature range only (−65 to +150 °C not validated per AEC); lacks PPAP documentation | Select when cost sensitivity outweighs automotive qualification requirements and thermal derating is acceptable |
| BZX84-C9V1 (Nexperia) | SOT23 package, 9.1 V (8.65–9.55 V), 60 Ω ZZT, AEC-Q101 qualified | Higher zener impedance increases voltage error under dynamic load; smaller SOT23 limits power handling to 350 mW | Choose for space-constrained boards where 350 mW clamping suffices and SOT23 footprint is preferred |
Compared with MMSZ5240B-TP and BZX84-C9V1, BZT52HC9V1WFQ delivers superior thermal performance (150 °C/W vs. ≥200 °C/W), tighter voltage tolerance, and lower impedance-making it optimal for high-reliability automotive clamping where sustained power dissipation and precision matter.
Availability
BZT52HC9V1WFQ is available at Aetrix Electronics and suitable for engine control units, infotainment systems, and ADAS camera modules requiring stable component supply with full automotive qualification traceability.
Supply support for BZT52HC9V1WFQ 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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The BZT52HC series targets automotive-grade voltage regulation and protection, designed specifically to meet AEC-Q101 stress test requirements and support IATF 16949-compliant production for safety-critical vehicle subsystems.
FAQ
What is the maximum power dissipation of BZT52HC9V1WFQ under standard PCB layout?
BZT52HC9V1WFQ dissipates up to 375 mW when mounted on FR-4 PCB with Diodes' minimum recommended pad layout. With a 1 cm² copper pad on the cathode side, it achieves 830 mW-critical for automotive load dump protection where sustained clamping is required. Derating begins above +25 °C ambient per Figure 1 in DS41143 Rev. 4-2.
Is BZT52HC9V1WFQ suitable for bidirectional ESD protection?
No-BZT52HC9V1WFQ is a unidirectional Zener diode optimized for reverse-bias voltage regulation and clamping. It lacks symmetrical breakdown characteristics required for bidirectional ESD protection. For such applications, purpose-built TVS diodes like D24Z9.1LQ-7 (also Diodes Inc.) should be used instead.
How does the temperature coefficient affect voltage stability in automotive environments?
With a specified TC of ±3.8 to ±7.0 mV/°C at 5 mA, BZT52HC9V1WFQ exhibits predictable voltage drift over −40 to +150 °C. At +125 °C, its zener voltage shifts by approximately +0.7 V from room-temperature value-within tolerance bands for most 12 V rail monitoring applications when properly compensated in system design.
Can BZT52HC9V1WFQ replace BZT52C9V1 in existing designs?
Yes-BZT52HC9V1WFQ is a direct upgrade: same SOD123F package, identical marking code "WE", improved thermal resistance (150 vs. 330 °C/W), higher power rating (830 vs. 375 mW), and AEC-Q101 qualification. No layout change is needed, but verify thermal margin in high-ambient applications due to increased power capability.
BZT52HC9V1WFQ-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123F
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 9.1 V
- Tolerance:
- ±5.42%
- 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:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123F
BZT52HC9V1WFQ-7 FAQ
1.How can I place an order for BZT52HC9V1WFQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52HC9V1WFQ-7 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 BZT52HC9V1WFQ-7 reliable?
The price and inventory of BZT52HC9V1WFQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52HC9V1WFQ-7 is usually 5 days.
3.What payment methods are accepted for BZT52HC9V1WFQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52HC9V1WFQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52HC9V1WFQ-7?
BZT52HC9V1WFQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52HC9V1WFQ-7 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 BZT52HC9V1WFQ-7?
For technical support, including BZT52HC9V1WFQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52HC9V1WFQ-7 requirements.
6.How does Aetrix verify that BZT52HC9V1WFQ-7 is sourced from the original manufacturer or authorized distributors?
All BZT52HC9V1WFQ-7 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 BZT52HC9V1WFQ-7 meets industry standards.
7.What is the process for return or replacement of BZT52HC9V1WFQ-7?
All BZT52HC9V1WFQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52HC9V1WFQ-7, 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 BZT52HC9V1WFQ-7 part is unused and in its original packaging.
Return procedure for BZT52HC9V1WFQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT52HC9V1WFQ-7 Tags
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Diodes Incorporated
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