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Vishay General Semiconductor - Diodes Division BZD17C3V9P-E3-18
- Part No.:
- BZD17C3V9P-E3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Zener Diodes
- Package:
- DO-219AB
- Datasheet:
-
BZD17C3V9P-E3-18.pdf
- Description:
- DIODE ZENER 3.9V 800MW DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,164
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Product details
Overview
BZD17C3V9P-E3-18 from Vishay Semiconductors is a silicon planar Zener diode in DO219AB (SMF®) surface-mount package, rated for 3.7 V to 4.1 V nominal zener voltage at 100 mA test current, with 8 Ω typical differential resistance and -0.14 %/°C to -0.04 %/°C temperature coefficient, used for precision voltage regulation in low-power analog circuits and power supply reference stages.
For engineers reviewing the BZD17C3V9P-E3-18 datasheet, BZD17C3V9P-E3-18 pinout, BZD17C3V9P-E3-18 application, or BZD17C3V9P-E3-18 equivalent, key selection criteria include zener voltage tolerance, thermal resistance (RthJA = 180 K/W), low leakage (IR ≤ 50 µA at VR = 1 V), and JEDEC-compliant high-temperature soldering capability (260 °C/10 s).
Technical Context
The BZD17C3V9P-E3-18 operates as a two-terminal voltage reference device, leveraging silicon planar junction technology to deliver stable reverse-biased breakdown behavior. Its zener voltage is specified at IZT = 100 mA with tight min/max bounds (3.7 V–4.1 V) and low dynamic impedance (8 Ω typ.), enabling accurate clamping and regulation in feedback loops.
Designed for surface-mount assembly on epoxy-glass PCBs with 3 mm × 3 mm copper pads (≥40 µm thick), it supports ambient operating temperatures from -55 °C to +150 °C and withstands non-repetitive surge pulses up to 300 W (100 µs square wave), with thermal resistance junction-to-ambient of 180 K/W under standard mounting conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener voltage (VZ) | 3.7 V min. to 4.1 V max. at IZT = 100 mA - defines precise clamping threshold for low-voltage reference designs |
| Differential resistance (rdif) | 8 Ω typical at IZT = 100 mA - ensures minimal output voltage shift under load variation |
| Temperature coefficient (αZ) | -0.14 %/°C min. to -0.04 %/°C max. - quantifies voltage drift over temperature for stability-critical applications |
| Reverse leakage current (IR) | ≤ 50 µA at VR = 1 V - guarantees low standby power loss in always-on bias networks |
| Power dissipation (Ptot) | 0.8 W at TA = 25 °C - sets maximum continuous DC power handling on standard PCB layout |
| Thermal resistance (RthJA) | 180 K/W - determines junction temperature rise per watt under defined mounting conditions |
| Package | DO219AB (SMF®) - ultra-low-profile SMD case (1.3 mm × 2.9 mm × 0.85 mm) compatible with automated pick-and-place |
Pinout & Package
DO219AB (SMF®) plastic surface-mount package: 1.3 mm height, 2.9 mm length, 1.4 mm width, 15 mg weight, compliant with RoHS 2002/95/EC and WEEE 2002/96/EC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Forward conduction terminal / cathode reference node in reverse-bias operation | Connected to lower-potential side in zener regulator configuration; defines polarity for correct breakdown orientation |
| Cathode (K) | Zener breakdown terminal / voltage reference output node | Provides stable regulated voltage relative to anode; must be held at higher potential than anode during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMD package | DO219AB footprint (2.9 mm × 1.4 mm) enables high-density PCB layouts in space-constrained consumer and portable electronics |
| High-temperature soldering tolerance | Rated for 260 °C/10 s at terminals - supports lead-free reflow without parametric degradation or delamination |
| Excellent long-term stability | Minimal parameter drift over time and thermal cycling - critical for uncalibrated reference circuits requiring field reliability |
| Low leakage current | IR ≤ 50 µA at VR = 1 V - reduces quiescent current in battery-powered voltage monitor and supervisor circuits |
Applications
| USB Power Management | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Clamping transient overvoltage on USB VBUS line during hot-plug events or ESD coupling. IC Role / Device Role / Timing Role: Zener clamp protecting downstream USB transceivers and power switches from >6 V surges. Use Value: Fast response and 300 W pulse rating suppress 100 µs transients without latch-up, preserving data integrity and port compliance. | Use Scenario: Providing stable 4.0 V reference for 12-bit ADC front-end in 4–20 mA loop-powered sensors. IC Role / Device Role / Timing Role: Precision voltage reference source for ratiometric sensor excitation and ADC reference scaling. Use Value: Tight VZ tolerance (±0.2 V) and low αZ ensure <0.1% full-scale error across -40 °C to +85 °C operating range. |
| Automotive Body Control Module | IoT Edge Node Voltage Monitoring |
Use Scenario: Regulating 5 V rail for microcontroller I/O peripherals in 12 V automotive subsystems with wide input variation. IC Role / Device Role / Timing Role: Low-power shunt regulator maintaining stable logic supply despite battery voltage fluctuations (9–16 V). Use Value: 0.8 W Ptot and 180 K/W RthJA allow operation without heatsink in confined BCM enclosures up to +85 °C ambient. | Use Scenario: Detecting brown-out condition in coin-cell-powered BLE modules by monitoring supply decay against fixed 3.9 V threshold. IC Role / Device Role / Timing Role: Voltage threshold detector using reverse-bias leakage current change near VZ knee. Use Value: Sub-1 µA leakage below 3.7 V and sharp turn-on enable reliable wake-up triggering with <100 nA quiescent current overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B3V9,115 | Zener voltage 3.9 V ±5%, SOD323 package (1.7 mm × 1.3 mm), RthJA = 450 K/W, Ptot = 0.3 W | Lower power rating limits use in >300 mW continuous regulation; better suited for signal-level clamping | Select when board space is tighter and power demand is <300 mW; verify thermal margin due to higher RthJA |
| MMBZ5227BS-7-F | Zener voltage 3.6 V ±5%, SOT-323 package, Ptot = 0.2 W, IR = 10 µA at VR = 1 V | Lower leakage improves ultra-low-power sensing but reduced VZ accuracy and higher tempco (±0.05 %/°C) | Prefer for battery-life-critical IoT nodes where leakage dominates budget, not precision |
Compared with BZD17C3V9P-E3-18, the BZX384-B3V9 offers smaller footprint but sacrifices 62% power handling and doubles thermal resistance, while MMBZ5227BS trades 0.3 V lower nominal VZ and looser tolerance for 5× lower leakage-making each suitable only in distinct power/precision/size trade-off contexts.
Availability
BZD17C3V9P-E3-18 is available at Aetrix Electronics and suitable for USB power protection, industrial sensor reference, automotive body control, and IoT voltage monitoring requiring stable component supply and consistent parametric performance across production lots.
Supply support for BZD17C3V9P-E3-18 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
Vishay Semiconductors is a global manufacturer of discrete semiconductors and passive components, specializing in high-reliability diodes, MOSFETs, optoelectronics, and resistive solutions for industrial, automotive, and computing markets.
The BZD17C series targets precision voltage reference and transient suppression in compact SMD applications, emphasizing thermal robustness, tight zener tolerance, and high-soldering survivability for modern automated assembly lines.
FAQ
What is the zener voltage tolerance of BZD17C3V9P-E3-18?
The BZD17C3V9P-E3-18 has a zener voltage range of 3.7 V minimum to 4.1 V maximum at IZT = 100 mA, corresponding to a ±0.2 V absolute tolerance or approximately ±5.1% around the nominal 3.9 V rating. This tolerance is guaranteed per unit and verified during production testing per Vishay Document Number 81821 Rev. 1.0.
Can BZD17C3V9P-E3-18 be used in place of a 3.9 V through-hole zener diode?
No direct substitution is recommended without layout and thermal redesign. The BZD17C3V9P-E3-18 uses DO219AB surface-mount packaging, differing mechanically and thermally from through-hole packages like DO-35. Its RthJA = 180 K/W assumes specific 3 mm × 3 mm Cu pad layout; replacing a through-hole part requires verifying solder joint reliability, current derating, and PCB copper area.
What is the maximum non-repetitive surge power rating for BZD17C3V9P-E3-18?
The BZD17C3V9P-E3-18 supports a non-repetitive peak pulse power dissipation of 300 W for a 100 µs square pulse, as specified under "Absolute Maximum Ratings" in Vishay's Document Number 81821. This rating applies only to single, isolated transients and does not imply continuous operation capability.
Does BZD17C3V9P-E3-18 meet RoHS and REACH requirements?
Yes, the BZD17C3V9P-E3-18 complies with the RoHS Directive 2002/95/EC and WEEE Directive 2002/96/EC as stated in its official datasheet. It is also manufactured in accordance with REACH SVHC requirements, with no substances above threshold concentrations present in the final device.
What is the forward voltage of BZD17C3V9P-E3-18 at 0.2 A?
The forward voltage (VF) of BZD17C3V9P-E3-18 is 1.2 V maximum at IF = 0.2 A, with typical performance near this value. This parameter is relevant when the device is operated in forward conduction mode, such as in ESD protection configurations or dual-direction clamp circuits.
BZD17C3V9P-E3-18 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- DO-219AB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 3.9 V
- Tolerance:
- -
- Power - Max:
- 800 mW
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- 50 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
BZD17C3V9P-E3-18 FAQ
1.How can I place an order for BZD17C3V9P-E3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZD17C3V9P-E3-18 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 BZD17C3V9P-E3-18 reliable?
The price and inventory of BZD17C3V9P-E3-18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZD17C3V9P-E3-18 is usually 5 days.
3.What payment methods are accepted for BZD17C3V9P-E3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZD17C3V9P-E3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZD17C3V9P-E3-18?
BZD17C3V9P-E3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZD17C3V9P-E3-18 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 BZD17C3V9P-E3-18?
For technical support, including BZD17C3V9P-E3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZD17C3V9P-E3-18 requirements.
6.How does Aetrix verify that BZD17C3V9P-E3-18 is sourced from the original manufacturer or authorized distributors?
All BZD17C3V9P-E3-18 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 BZD17C3V9P-E3-18 meets industry standards.
7.What is the process for return or replacement of BZD17C3V9P-E3-18?
All BZD17C3V9P-E3-18 units undergo pre-shipment inspection (PSI). If there is an issue with BZD17C3V9P-E3-18, 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 BZD17C3V9P-E3-18 part is unused and in its original packaging.
Return procedure for BZD17C3V9P-E3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZD17C3V9P-E3-18 Tags
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