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Diodes Incorporated BZX84C15W-7-F
- Part No.:
- BZX84C15W-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84C15W-7-F.pdf
- Description:
- DIODE ZENER 15V 200MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:37,074
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Product details
Overview
BZX84C15W-7-F from Diodes Incorporated is a 15 V, 200 mW surface-mount Zener diode in SOT-323 package, with nominal zener voltage 15 V (min 13.8 V, max 15.6 V at IZT = 5 mA), zener impedance 30 Ω at 5 mA, and reverse current ≤0.1 µA at 10.5 V, used for precision voltage regulation and reference in low-power analog circuits.
For engineers reviewing the BZX84C15W-7-F datasheet, BZX84C15W-7-F pinout, BZX84C15W-7-F application, or BZX84C15W-7-F equivalent, key selection criteria include zener voltage tolerance (±8%), thermal resistance (625 K/W), ultra-small footprint (SOT-323), RoHS-compliant lead-free plating, and temperature coefficient (+9.2 to +13.0 mV/°C).
Technical Context
This Zener diode operates in reverse breakdown mode with tightly controlled voltage regulation across 5 mA test current. Its planar die construction ensures stable zener characteristics and low leakage (≤0.1 µA at VR = 10.5 V) over -65°C to +125°C ambient range.
The device exhibits a positive temperature coefficient (+9.2 to +13.0 mV/°C at 5 mA), indicating increasing zener voltage with rising junction temperature - critical for biasing stability in temperature-sensitive references and feedback networks.
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 tolerance in shunt regulator designs |
| Power Dissipation (PD) | 200 mW at TA = 25°C - limits maximum continuous power in PCB-mounted applications |
| Zener Impedance (ZZT) | 30 Ω at IZT = 5 mA - determines regulation stiffness and AC ripple rejection capability |
| Reverse Current (IR) | ≤0.1 µA at VR = 10.5 V - ensures minimal leakage in high-impedance reference nodes |
| Temp Coefficient (αVZ) | +9.2 to +13.0 mV/°C at 5 mA - quantifies drift direction and magnitude for thermal compensation planning |
| Package | SOT-323 - 2.2 mm × 1.35 mm footprint enables dense layout in space-constrained consumer and portable electronics |
| Thermal Resistance (RθJA) | 625 K/W on FR4 board - sets junction-to-ambient temperature rise per watt dissipated |
Pinout & Package
Package: SOT-323 - three-terminal surface-mount plastic case with anode (A), cathode (K), and no third functional terminal; polarity marked by cathode band on top view; terminals are solderable per MIL-STD-202, Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Forward conduction terminal | Connected to lower-potential node in reverse-biased Zener configuration |
| Cathode (K) | Zener breakdown terminal | Connected to higher-potential node; voltage referenced to this terminal during regulation |
| Case / Exposed Pad | Non-electrical mechanical interface | No internal connection; serves only as thermal and mechanical anchor on PCB |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Enables tight VZ tolerance and repeatable breakdown characteristics across production lots |
| 200 mW power rating | Supports stable regulation in low-current (<10 mA) analog signal chains and microcontroller reference circuits |
| Lead-free / RoHS-compliant plating | Matte tin finish over Alloy 42 leadframe meets global environmental compliance without sacrificing solderability |
| Moisture sensitivity Level 1 | Eliminates need for baking prior to reflow, reducing manufacturing overhead and handling risk |
| "Green" molding compound | Halogen-free, UL 94V-0 rated encapsulant supports sustainability requirements without compromising flammability safety |
Applications
| Portable Power Management | Microcontroller Voltage Reference |
|---|---|
Use Scenario: Regulating 15 V rail for USB-C PD auxiliary power path in compact battery-powered devices. IC Role / Device Role: Shunt voltage reference providing stable bias for buck controller feedback divider. Use Value: Tight 13.8–15.6 V tolerance ensures ±8% output accuracy under load transients and temperature variation. | Use Scenario: Supplying precise 15 V reference to ADC input buffer in wearable health sensor node. IC Role / Device Role: Low-leakage (≤0.1 µA) Zener establishing known DC offset for analog front-end calibration. Use Value: Minimal reverse current prevents loading of high-impedance sensor outputs and preserves measurement fidelity. |
| Industrial Sensor Signal Conditioning | Automotive Body Control Module |
Use Scenario: Biasing op-amp input stage in 4–20 mA transmitter loop powered by 24 V supply. IC Role / Device Role: Temperature-compensated (9.2–13.0 mV/°C) Zener setting gain-setting node voltage. Use Value: Predictable positive TC allows passive compensation in fixed-gain amplifier design across -40°C to +85°C. | Use Scenario: Providing 15 V clamp for LIN bus transceiver protection in door module ECU. IC Role / Device Role: Transient-suppressing Zener limiting voltage spikes on 12 V system-derived rails. Use Value: 200 mW rating sustains short-duration surges while SOT-323 footprint fits tight connector routing zones. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5245BS-7-F | Zener voltage 15 V (14.25–15.75 V), 350 mW rating, SOT-323 package, 20 Ω ZZT at 5 mA | Higher power and lower impedance support higher-current regulation but require derating above 70°C | Select when >200 mW headroom or <30 Ω dynamic impedance is required in same footprint |
| 1N4744A-TAP | 15 V (14.25–15.75 V), 1 W rating, DO-35 through-hole package, 16 Ω ZZT at 20 mA | Through-hole mounting and higher power suit legacy industrial boards; incompatible with SMT-only assembly | Choose only for manual repair, prototyping, or existing through-hole designs requiring drop-in replacement |
Compared with BZX84C15W-7-F, MMBZ5245BS-7-F offers lower impedance and higher power in identical SOT-323 packaging, while 1N4744A-TAP provides higher robustness in through-hole form but sacrifices miniaturization and automated assembly compatibility.
Availability
BZX84C15W-7-F is available at Aetrix Electronics and suitable for portable power management, microcontroller voltage reference, industrial sensor signal conditioning, and automotive body control module applications requiring stable component supply and RoHS-compliant sourcing.
Supply support for BZX84C15W-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, headquartered in Plano, Texas, serving industrial, computing, consumer, and communications markets with high-reliability components.
The BZX84 series belongs to Diodes' standard Zener diode product line, designed specifically for precision voltage regulation and reference in space-constrained, low-power surface-mount applications.
FAQ
What is the maximum reverse voltage before breakdown for BZX84C15W-7-F?
The nominal zener voltage is 15 V, with guaranteed breakdown occurring between 13.8 V and 15.6 V at test current IZT = 5 mA. Below 13.8 V, reverse current remains ≤0.1 µA at 10.5 V, confirming non-conductive behavior in sub-threshold operation.
Can BZX84C15W-7-F be used in place of a 1N4744A?
No - although both regulate at 15 V, BZX84C15W-7-F is a 200 mW SOT-323 surface-mount device with 30 Ω impedance at 5 mA, whereas 1N4744A is a 1 W through-hole part with 16 Ω impedance at 20 mA. Direct substitution requires PCB redesign and power derating analysis.
Is the temperature coefficient of BZX84C15W-7-F linear across its operating range?
The specified temperature coefficient (+9.2 to +13.0 mV/°C) applies at IZT = 5 mA and TJ = 25°C. While the coefficient remains positive across -65°C to +125°C, its magnitude varies nonlinearly with temperature and current - full characterization requires consulting Diodes Inc.'s DS30066 Figure 2.
Does BZX84C15W-7-F require a heatsink in typical applications?
No - with RθJA = 625 K/W and PD = 200 mW, junction-to-ambient rise is 125°C at 25°C ambient. In practice, it operates safely up to +85°C ambient without heatsinking when mounted on standard FR4 with recommended pad layout per AP02001.
BZX84C15W-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 15 V
- Tolerance:
- ±6%
- Power - Max:
- 200 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 ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BZX84C15W-7-F FAQ
1.How can I place an order for BZX84C15W-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C15W-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 BZX84C15W-7-F reliable?
The price and inventory of BZX84C15W-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 BZX84C15W-7-F is usually 5 days.
3.What payment methods are accepted for BZX84C15W-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C15W-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C15W-7-F?
BZX84C15W-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C15W-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 BZX84C15W-7-F?
For technical support, including BZX84C15W-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C15W-7-F requirements.
6.How does Aetrix verify that BZX84C15W-7-F is sourced from the original manufacturer or authorized distributors?
All BZX84C15W-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 BZX84C15W-7-F meets industry standards.
7.What is the process for return or replacement of BZX84C15W-7-F?
All BZX84C15W-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C15W-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 BZX84C15W-7-F part is unused and in its original packaging.
Return procedure for BZX84C15W-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84C15W-7-F Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
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BZT52C3V6LP-7
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