My Inquiry
My Account
Nexperia USA Inc. BZX84W-C15F
- Part No.:
- BZX84W-C15F
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84W-C15F.pdf
- Description:
- DIODE ZENER 15V 275MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:7,097
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZX84W-C15F from Nexperia is a ±5 % tolerance Zener voltage regulator diode with nominal 15 V breakdown voltage, 200 mA maximum forward current, 275 mW total power dissipation, and 200 Ω typical differential resistance at IZ = 5 mA - used for precision voltage reference and overvoltage protection in low-power analog signal conditioning circuits.
For engineers reviewing the BZX84W-C15F datasheet, BZX84W-C15F pinout, BZX84W-C15F application, or BZX84W-C15F equivalent, this page delivers verified Zener parameters, SOT323 terminal mapping, thermal resistance (455 K/W), reverse leakage (50 nA at 10.5 V), and real-world regulation use cases in portable power management and sensor biasing.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain stable 15 V across its terminals under varying load and temperature conditions. Its ±5 % tolerance (C-series) and 11.4 mV/K temperature coefficient enable predictable drift behavior in ambient ranges from −55 °C to +150 °C.
Designed for surface-mount assembly on FR4 PCBs with single-sided copper, it delivers 275 mW power handling at 25 °C ambient and supports non-repetitive surge pulses up to 40 W (100 µs). Junction-to-ambient thermal resistance is 455 K/W under standard footprint conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 15 V nominal; guaranteed 13.8 V to 15.6 V at IZ = 5 mA - defines regulated output level in shunt reference designs |
| Tolerance | ±5 % (C-series) - determines initial accuracy of voltage setpoint without trimming |
| Differential Resistance (rdif) | 200 Ω max at IZ = 5 mA - quantifies regulation stiffness against load current changes |
| Reverse Leakage (IR) | 50 nA max at VR = 10.5 V - ensures minimal quiescent current in standby regulation paths |
| Power Dissipation (Ptot) | 275 mW at Tamb = 25 °C on FR4 PCB - sets maximum continuous DC power handling before thermal derating |
| Junction Temperature (Tj) | −55 °C to +150 °C - defines operational envelope for automotive and industrial ambient environments |
| Capacitance (Cd) | 2.0 pF at f = 1 MHz, VR = 0 V - enables stable performance in high-frequency noise suppression applications |
Pinout & Package
Package: SOT323 (SC-70), leadless surface-mount plastic package with 3 terminals; dimensions per IEC JEDEC outline (D = 2.2 mm, E = 1.35 mm, Lp = 1.8 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward-biased terminal; connects to lower-potential side in regulation path |
| 2 | Not Connected (n.c.) | Electrically isolated internal pad; no circuit function or routing required |
| 3 | Cathode (K) | Reverse-biased terminal; connects to higher-potential side and carries Zener current during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Wide Zener voltage range | 2.4 V to 75 V in E24 steps - supports standardized selection across diverse supply rail requirements |
| Two tolerance options | ±2 % (B-series) and ±5 % (C-series) - balances cost vs. precision for different design tiers |
| Low capacitance | 2.0 pF at 1 MHz - minimizes high-frequency signal coupling in RF-adjacent bias networks |
| High surge capability | 40 W non-repetitive peak reverse power (100 µs pulse) - withstands transient overvoltage events |
| Thermal robustness | 150 °C max junction temperature - sustains operation in thermally constrained PCB layouts |
Applications
| Portable Sensor Biasing | USB Power Rail Clamping |
|---|---|
|
Use Scenario: Providing stable 15 V reference to MEMS pressure sensor front-end amplifier in battery-powered IoT node. IC Role / Device Role / Timing Role: Shunt voltage reference maintaining constant bias point despite 3.0–4.2 V Li-ion supply variation. Use Value: Enables <1 % full-scale error in analog output by limiting reference drift to ±0.15 V over −25 °C to +70 °C. |
Use Scenario: Protecting 15 V auxiliary rail in USB-C PD sink controller from 20 V adapter overshoot. IC Role / Device Role / Timing Role: Overvoltage clamp absorbing transient energy above 15.6 V threshold. Use Value: Limits clamping voltage to ≤16.2 V with <50 ns response, preventing damage to downstream LDO input stage. |
| Industrial Analog Input Protection | Low-Power Microcontroller Reset Circuit |
|
Use Scenario: Guarding 15 V analog input channel of PLC I/O module against field-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage limiter placed ahead of series resistor and TVS diode. Use Value: Absorbs up to 40 W surge energy (100 µs) while holding clamped voltage below 18 V, preserving signal chain integrity. |
Use Scenario: Generating clean 15 V reset threshold for ARM Cortex-M0+ MCU with brown-out detection. IC Role / Device Role / Timing Role: Precision voltage reference feeding comparator input in reset supervisor IC. Use Value: Delivers ±5 % accuracy and <200 Ω dynamic impedance to ensure reset assertion within 10 µs of supply dip below 14.25 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5245BS | 15 V, ±5 %, SOT-323, 200 mW Ptot, 300 Ω rdif | Higher differential resistance reduces regulation precision under dynamic loads | Prefer when legacy ON Semi BOM alignment is required and tighter rdif is not critical |
| Vishay BZX84-C15 | 15 V, ±5 %, SOT-23, 350 mW Ptot, 190 Ω rdif, larger footprint | Higher power rating allows higher continuous current but requires more board area | Choose when thermal margin >275 mW is needed and SOT-23 layout is already established |
Compared with BZX84W-C15F, MMBZ5245BS trades regulation stiffness for cross-supplier compatibility, while BZX84-C15 sacrifices miniaturization for enhanced thermal headroom - making the BZX84W-C15F optimal for space-constrained, precision-shunt designs where 275 mW and 200 Ω rdif meet system requirements.
Availability
BZX84W-C15F is available at Aetrix Electronics and suitable for portable sensor biasing, USB power rail clamping, and industrial analog input protection requiring stable component supply, consistent parametric performance, and SOT323 footprint compatibility.
Supply support for BZX84W-C15F 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
Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified and industrial-grade components.
The BZX84W series belongs to Nexperia's general-purpose Zener diode product line, engineered for stable voltage regulation in compact SMT applications where precision, thermal resilience, and high-frequency performance are essential.
FAQ
What is the maximum reverse voltage the BZX84W-C15F can sustain without breakdown?
The BZX84W-C15F begins controlled Zener breakdown at its nominal 15 V rating, with guaranteed regulation starting at 13.8 V (min VZ). It is not rated for sustained reverse voltage above 15.6 V (max VZ) - operation beyond this risks uncontrolled conduction or thermal runaway unless current-limited by external series resistance.
Can BZX84W-C15F be used in parallel for higher power handling?
No - Zener diodes exhibit manufacturing spread in VZ, causing current hogging if paralleled without individual ballast resistors. The BZX84W-C15F's ±5 % tolerance means two units may differ by up to 1.5 V, leading to >90 % of current flowing through the lower-VZ unit and potential failure.
How does ambient temperature affect the 15 V regulation accuracy?
At IZ = 5 mA, the BZX84W-C15F has a temperature coefficient of +11.4 mV/K. Over a −40 °C to +125 °C ambient range, this introduces ±1.87 V drift from nominal - meaning regulation shifts from ~13.1 V to ~16.9 V, requiring derating or compensation in precision applications.
Is the n.c. pin (Pin 2) electrically isolated or internally tied to substrate?
Pin 2 is explicitly designated "not connected" in Nexperia's pinning table and graphic symbol. It is an isolated metallurgical pad with no internal bond wire or silicon connection - no electrical function, no thermal path, and no requirement for PCB routing or grounding.
BZX84W-C15F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX84W
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 15 V
- Tolerance:
- ±5%
- Power - Max:
- 275 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 10.5 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BZX84W-C15F FAQ
1.How can I place an order for BZX84W-C15F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84W-C15F 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 BZX84W-C15F reliable?
The price and inventory of BZX84W-C15F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84W-C15F is usually 5 days.
3.What payment methods are accepted for BZX84W-C15F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84W-C15F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84W-C15F?
BZX84W-C15F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84W-C15F 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 BZX84W-C15F?
For technical support, including BZX84W-C15F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84W-C15F requirements.
6.How does Aetrix verify that BZX84W-C15F is sourced from the original manufacturer or authorized distributors?
All BZX84W-C15F 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 BZX84W-C15F meets industry standards.
7.What is the process for return or replacement of BZX84W-C15F?
All BZX84W-C15F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84W-C15F, 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 BZX84W-C15F part is unused and in its original packaging.
Return procedure for BZX84W-C15F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84W-C15F 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
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
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…
