My Inquiry
My Account
Diodes Incorporated D3Z3V3BF-7
- Part No.:
- D3Z3V3BF-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-90, SOD-323F
- Datasheet:
-
D3Z3V3BF-7.pdf
- Description:
- DIODE ZENER 3.43V 400MW SOD323F
- Quantity:
- Payment:
- Shipping:
Inventory:5,366
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
D3Z3V3BF-7 from Diodes Incorporated is a precision 3.32–3.53 V, 400 mW surface-mount Zener diode in SOD323F package, optimized for voltage regulation and reference applications in space-constrained power management circuits, with ±1% typical Zener tolerance, 95 Ω dynamic impedance at 5 mA, and -1.9 mV/°C temperature coefficient.
For engineers reviewing the D3Z3V3BF-7 datasheet, D3Z3V3BF-7 pinout, D3Z3V3BF-7 application, or D3Z3V3BF-7 equivalent, this part supports low-power analog reference design, overvoltage clamping in USB-C PD interfaces, and precision biasing in sensor signal conditioning stages where tight voltage stability and thermal predictability are required.
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal test current of 5 mA, delivering stable regulation across -65°C to +150°C ambient range. Its 95 Ω Zener impedance at IZT and 145 pF junction capacitance support fast transient response in feedback loops and low-noise reference generation.
The device uses a planar epitaxial construction with matte tin–annealed copper alloy leadframe, enabling reliable solderability per MIL-STD-202 and compatibility with automated reflow processes on FR-4 PCBs. Its SOD323F package provides 312.5°C/W junction-to-ambient thermal resistance under standard mounting conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.32–3.53 V @ 5 mA - defines precise regulation window for 3.3 V rail monitoring and clamping |
| Power Dissipation (PD) | 400 mW on FR-4 - enables operation without heatsinking in compact consumer and industrial PCB layouts |
| Zener Impedance (ZZT) | 95 Ω @ 1 kHz, 5 mA - ensures minimal output voltage shift under load transients in reference circuits |
| Reverse Current (IR) | 5 μA @ 1 V - guarantees low leakage in high-impedance bias networks and battery-powered systems |
| Temp. Coefficient (αVZ) | -1.9 mV/°C - allows predictable drift compensation in temperature-sensitive analog front-ends |
| Junction Capacitance (CJ) | 145 pF @ 0 V, 1 MHz - supports stable performance in low-frequency regulation and ESD-tolerant input protection |
Pinout & Package
Package: SOD323F - ultra-compact surface-mount plastic package (1.25 mm × 1.70 mm × 0.95 mm), UL 94V-0 rated, moisture sensitivity level 1, cathode band marked on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener reference ground node | Connected to system ground or lower-potential rail; forms reference return path in shunt regulator topology |
| Cathode | Zener breakdown terminal / regulated output node | Connected to input rail or signal node requiring clamping; delivers stable voltage relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| Precision Zener voltage tolerance | ±1% typical at 5 mA - reduces calibration overhead in factory-trimmed analog subsystems |
| Low thermal resistance | 312.5°C/W junction-to-ambient - maintains regulation accuracy under sustained 400 mW dissipation on standard PCB |
| Automated assembly compatibility | SOD323F footprint with J-STD-020 Level 1 moisture rating - eliminates bake requirements and supports high-yield SMT lines |
| Green material compliance | Halogen- and antimony-free molding compound (<900 ppm Br/Cl, <1000 ppm Sb) - meets automotive and industrial environmental mandates |
Applications
| USB Power Delivery Clamp | Industrial Sensor Bias Reference |
|---|---|
|
Use Scenario: Clamping transient surges on CC1/CC2 lines in USB-C PD controllers during hot-plug events. IC Role / Device Role / Timing Role: Shunt voltage limiter protecting PHY-level interface pins from >5.5 V excursions. Use Value: 3.32–3.53 V breakdown threshold prevents false PD negotiation while surviving 8 kV HBM ESD pulses due to low CJ and robust junction design. |
Use Scenario: Providing stable 3.3 V reference for bridge-based pressure sensors in factory automation nodes. IC Role / Device Role / Timing Role: Precision DC bias source for Wheatstone bridge excitation and ADC reference scaling. Use Value: -1.9 mV/°C tempco and 95 Ω ZZT minimize measurement drift across -40°C to +85°C operating range. |
| Low-Power IoT Node Regulator | Automotive Cabin Controller Monitor |
|
Use Scenario: Regulating supply to ultra-low-power microcontrollers in battery-operated BLE beacons. IC Role / Device Role / Timing Role: Passive shunt regulator maintaining 3.3 V rail when LDO dropout is impractical. Use Value: 5 μA reverse leakage at 1 V preserves battery life over multi-year deployments; 400 mW rating handles peak transmit loads. |
Use Scenario: Monitoring 3.3 V domain integrity in infotainment head unit power sequencing logic. IC Role / Device Role / Timing Role: Voltage supervisor input reference for reset ICs and watchdog comparators. Use Value: AEC-Q200-aligned manufacturing and -65°C to +150°C TJ rating ensure reliability in under-dash thermal environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B3V3,115 (Nexperia) | 3.3 V nominal, ±2% tolerance, 300 mW PD, 150 Ω ZZT | Higher impedance and wider tolerance reduce regulation accuracy in precision analog paths | Select when cost sensitivity outweighs 0.2% VZ tolerance and 50 Ω ZZT advantage |
| MMSZ3V3T1G (ON Semiconductor) | 3.3 V nominal, ±5% tolerance, 350 mW PD, 90 Ω ZZT, SOD-123 package | Larger SOD-123 footprint increases board area; looser tolerance requires post-calibration | Choose for legacy SOD-123 layout reuse where 145 pF CJ and -1.9 mV/°C αVZ are non-critical |
Compared with BZX384-B3V3 and MMSZ3V3T1G, D3Z3V3BF-7 delivers tighter voltage control, lower thermal resistance, and superior temperature stability-making it preferred for new designs demanding minimal calibration and high long-term reference integrity.
Availability
D3Z3V3BF-7 is available at Aetrix Electronics and suitable for USB-C PD interface protection, industrial sensor biasing, and low-power IoT node regulation requiring stable component supply across production lifecycles.
Supply support for D3Z3V3BF-7 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.
This device belongs to Diodes' precision Zener diode family engineered for high-stability voltage reference and clamping in space-constrained, thermally demanding applications-from consumer wearables to automotive control modules.
FAQ
What is the maximum continuous Zener current for D3Z3V3BF-7 at 25°C?
The device is rated for 400 mW power dissipation at 25°C ambient. With a nominal Zener voltage of 3.43 V (midpoint of 3.32–3.53 V), the maximum continuous Zener current is approximately 117 mA (400 mW ÷ 3.43 V). However, derating begins above 25°C per Figure 1, limiting usable current in elevated ambient conditions.
Does D3Z3V3BF-7 meet AEC-Q200 stress testing requirements?
D3Z3V3BF-7 is manufactured in IATF 16949-certified facilities and supports PPAP documentation. While not pre-qualified to AEC-Q200, Diodes offers automotive-grade variants (e.g., D3Z3V3BFQ-7) with full AEC-Q200 qualification. Standard D3Z3V3BF-7 is suitable for non-safety-critical automotive cabin applications where customer validation is performed.
How does the -1.9 mV/°C temperature coefficient impact circuit accuracy over temperature?
Over a 100°C span (e.g., -40°C to +60°C), the Zener voltage shifts by approximately -190 mV. For a 3.43 V nominal, that represents -5.5% drift. In practice, this is mitigated by using the diode in low-current, low-self-heating configurations or pairing it with complementary tempcos elsewhere in the signal chain.
Can D3Z3V3BF-7 be used in place of a 3.3 V LDO for low-current applications?
Yes-as a shunt regulator, it can maintain ~3.3 V across loads drawing up to ~10 mA when supplied with a series resistor and stable input. Unlike an LDO, it lacks active pass elements, so output impedance equals ZZT (95 Ω), making it unsuitable for dynamic loads >1 mA. It excels in static biasing, not powering digital ICs.
D3Z3V3BF-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-90, SOD-323F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 3.43 V
- Tolerance:
- ±3%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323F
D3Z3V3BF-7 FAQ
1.How can I place an order for D3Z3V3BF-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for D3Z3V3BF-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 D3Z3V3BF-7 reliable?
The price and inventory of D3Z3V3BF-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for D3Z3V3BF-7 is usually 5 days.
3.What payment methods are accepted for D3Z3V3BF-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for D3Z3V3BF-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for D3Z3V3BF-7?
D3Z3V3BF-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your D3Z3V3BF-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 D3Z3V3BF-7?
For technical support, including D3Z3V3BF-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your D3Z3V3BF-7 requirements.
6.How does Aetrix verify that D3Z3V3BF-7 is sourced from the original manufacturer or authorized distributors?
All D3Z3V3BF-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 D3Z3V3BF-7 meets industry standards.
7.What is the process for return or replacement of D3Z3V3BF-7?
All D3Z3V3BF-7 units undergo pre-shipment inspection (PSI). If there is an issue with D3Z3V3BF-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 D3Z3V3BF-7 part is unused and in its original packaging.
Return procedure for D3Z3V3BF-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
D3Z3V3BF-7 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
