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Diodes Incorporated D3Z36BF-7
- Part No.:
- D3Z36BF-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-90, SOD-323F
- Datasheet:
-
D3Z36BF-7.pdf
- Description:
- DIODE ZENER 35.97V 400MW SOD323F
- Quantity:
- Payment:
- Shipping:
Inventory:5,563
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Product details
Overview
D3Z36BF-7 from Diodes Incorporated is a precision 36 V Zener diode in SOD323F package, rated for 400 mW power dissipation on FR-4 PCB, with ±2.5% tolerance (35.07–36.87 V at 5 mA), 60 Ω dynamic impedance at 5 mA, and −27 mV/°C temperature coefficient. It serves as a stable voltage reference in low-power analog monitoring circuits.
For engineers reviewing the D3Z36BF-7 datasheet, D3Z36BF-7 pinout, D3Z36BF-7 application, or D3Z36BF-7 equivalent, this part is selected for precision biasing, overvoltage clamping, and feedback regulation where tight VZ tolerance, low thermal drift, and SMT compatibility are required.
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal Zener voltage of 36 V at IZT = 5 mA. Its −27 mV/°C temperature coefficient ensures predictable VZ shift across −65°C to +150°C operating range, and its 60 Ω Zener impedance at test current supports stable regulation under moderate load transients.
The device uses a planar epitaxial construction in a molded plastic SOD323F package with cathode band marking, matte tin–annealed copper alloy terminals, and meets J-STD-020 Level 1 moisture sensitivity-enabling robust reflow compatibility without baking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 35.07–36.87 V at 5 mA - defines precise clamping/reference level for feedback or protection circuits |
| Power Dissipation (PD) | 400 mW on FR-4 - sets maximum continuous DC or pulsed power handling on standard PCB |
| Zener Impedance (ZZT) | 60 Ω at 5 mA - determines AC regulation stiffness and ripple rejection capability |
| Temperature Coefficient (TC) | −27 mV/°C - quantifies VZ drift per degree, critical for temperature-stable references |
| Reverse Current (IR) | 0.05 μA at 28.6 V - confirms low leakage below knee voltage, minimizing standby error |
| Total Capacitance (CJ) | 14 pF at 0 V - impacts high-frequency noise filtering and transient response bandwidth |
Pinout & Package
Package: SOD323F - ultra-small surface-mount plastic package (1.25 mm × 1.70 mm × 0.95 mm), cathode-marked with band, lead-free, halogen-free, and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to lower-potential side in reverse-bias configuration; forms reference ground return path |
| Cathode | Zener breakdown terminal / voltage clamp input | Connected to higher-potential rail; absorbs overvoltage energy and regulates at VZ |
Key Features
| Feature | Design Value |
|---|---|
| Precision Zener voltage tolerance | ±2.5% (35.07–36.87 V) - enables accurate voltage setting without post-calibration |
| Low thermal drift | −27 mV/°C TC - maintains reference stability across industrial temperature range |
| Automated assembly compatibility | SOD323F footprint with J-STD-020 Level 1 MSL - eliminates pre-bake and supports high-yield reflow |
| Green compliance | Halogen- and antimony-free, RoHS 3 compliant (<900 ppm Br/Cl, <1000 ppm Sb) - meets global environmental mandates |
Applications
| Industrial Sensor Signal Conditioning | USB-C Power Delivery Feedback |
|---|---|
Use Scenario: Stabilizing reference voltage for 24-bit ADC front-end in pressure transducer modules. IC Role / Device Role / Timing Role: Precision shunt reference providing 36 V bias to op-amp gain stage and ADC reference divider network. Use Value: Tight 2.5% VZ tolerance and −27 mV/°C TC reduce system calibration frequency and improve long-term measurement repeatability. | Use Scenario: Clamping auxiliary power rail in USB-C PD sink controller during CC line voltage surges. IC Role / Device Role / Timing Role: Fast-acting overvoltage protector limiting CC logic voltage to safe 36 V threshold before controller damage. Use Value: 60 Ω ZZT and 0.05 μA IR ensure minimal loading during normal operation and rapid clamping response to ESD-like transients. |
| Programmable Logic Controller I/O Protection | Medical Infusion Pump Voltage Monitor |
Use Scenario: Protecting 24 V digital input channels against field-wiring induced transients in PLC backplanes. IC Role / Device Role / Timing Role: Shunt clamp absorbing surge energy while holding input voltage below 36 V to preserve optocoupler integrity. Use Value: 400 mW PD rating allows sustained clamping of repetitive 100 ns pulses without thermal runaway. | Use Scenario: Monitoring battery pack voltage in Class II medical infusion pumps with isolated feedback loop. IC Role / Device Role / Timing Role: Reference element in isolated voltage divider feeding secondary-side error amplifier for battery charge control. Use Value: 14 pF junction capacitance minimizes phase lag in feedback path, preserving loop stability in isolated flyback regulators. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B36,115 | Same 36 V nominal, ±5% tolerance (34.2–37.8 V), 90 Ω ZZT, SOD323 package | Higher VZ tolerance and impedance reduce regulation accuracy in precision feedback loops | Select when cost sensitivity outweighs tight VZ stability requirements |
| MMSZ5245B-TP | 36 V nominal, ±5% tolerance, 300 Ω ZZT, SOD123 package, 500 mW rating | Larger SOD123 footprint and higher ZZT limit use in space-constrained, low-noise designs | Select only if board layout requires larger pad spacing or higher pulse power margin |
Compared with BZX384-B36 and MMSZ5245B-TP, D3Z36BF-7 delivers superior voltage accuracy and lower dynamic impedance in the smallest footprint-making it optimal for miniaturized, high-stability analog systems where thermal drift and layout area are critical constraints.
Availability
D3Z36BF-7 is available at Aetrix Electronics and suitable for industrial sensor conditioning, USB-C power delivery feedback, programmable logic controller I/O protection, and medical infusion pump voltage monitoring requiring stable component supply and full traceability.
Supply support for D3Z36BF-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.
The D3Z series targets high-precision, low-power Zener reference applications in automotive, industrial, and medical systems-emphasizing tight tolerance, low thermal drift, and green packaging compliance.
FAQ
What is the maximum continuous Zener current for D3Z36BF-7 at 25°C?
The device is rated for 400 mW power dissipation at 25°C ambient. At 36 V nominal Zener voltage, this corresponds to a maximum continuous Zener current of approximately 11.1 mA (IZ = PD/VZ). Derating applies above 25°C per Fig. 1's power derating curve.
Does D3Z36BF-7 meet AEC-Q101 qualification for automotive use?
No-D3Z36BF-7 is not AEC-Q101 qualified. The datasheet explicitly states that automotive-qualified variants require specific change control, PPAP capability, and IATF 16949 manufacturing; customers must contact Diodes directly for such versions.
How does the −27 mV/°C temperature coefficient affect circuit performance?
This coefficient means VZ decreases by 27 mV per °C rise in junction temperature. Over a 100°C span (−40°C to +60°C), VZ shifts by ~2.7 V-requiring compensation in high-accuracy references but acceptable for general-purpose clamping where absolute stability is secondary to fast response.
Can D3Z36BF-7 be used in place of a 33 V Zener for overvoltage protection?
No-it is not a drop-in replacement. With a minimum VZ of 35.07 V, it triggers at higher voltage than a 33 V Zener (e.g., D3Z33BF, min 32.15 V). Using it in a 33 V protection circuit would delay clamping, risking upstream component damage during overvoltage events.
D3Z36BF-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):
- 35.97 V
- Tolerance:
- ±3%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 60 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 27 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
D3Z36BF-7 FAQ
1.How can I place an order for D3Z36BF-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for D3Z36BF-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 D3Z36BF-7 reliable?
The price and inventory of D3Z36BF-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for D3Z36BF-7 is usually 5 days.
3.What payment methods are accepted for D3Z36BF-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for D3Z36BF-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for D3Z36BF-7?
D3Z36BF-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your D3Z36BF-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 D3Z36BF-7?
For technical support, including D3Z36BF-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your D3Z36BF-7 requirements.
6.How does Aetrix verify that D3Z36BF-7 is sourced from the original manufacturer or authorized distributors?
All D3Z36BF-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 D3Z36BF-7 meets industry standards.
7.What is the process for return or replacement of D3Z36BF-7?
All D3Z36BF-7 units undergo pre-shipment inspection (PSI). If there is an issue with D3Z36BF-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 D3Z36BF-7 part is unused and in its original packaging.
Return procedure for D3Z36BF-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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