My Inquiry
My Account
Nexperia USA Inc. BZX585-C15,115
.jpg)
- Part No.:
- BZX585-C15,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX585-C15,115.pdf
- Description:
- DIODE ZENER 15V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:9,028
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZX585-C15,115 from Nexperia is a 15 V ±5 % Zener voltage regulator diode in SOD523 (SC-79) ultra-small surface-mount package, rated for 300 mW total power dissipation and 40 W non-repetitive peak reverse power, used for precision low-power voltage reference and overvoltage clamping in space-constrained consumer and industrial PCBs.
For engineers reviewing the BZX585-C15,115 datasheet, BZX585-C15,115 pinout, BZX585-C15,115 application, or BZX585-C15,115 equivalent, key selection criteria include its 15 V nominal Zener voltage at 5 mA, 25 Ω typical differential resistance, −10.7 mV/K temperature coefficient, and cathode-anode polarity marking on the SOD523 body.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable DC voltage under varying load and input conditions. Its 15 V nominal Zener voltage is specified at IZ = 5 mA with ±5 % tolerance, and exhibits 25 Ω typical differential resistance at that current, ensuring tight regulation across small current deviations.
The device features a negative temperature coefficient of −10.7 mV/K at IZ = 5 mA, enabling predictable thermal drift compensation in reference circuits. It supports pulsed surge handling up to 40 W for 100 µs square-wave transients at Tj = 25 °C, with junction temperature rated from −65 °C to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 15 V nominal at IZ = 5 mA, ±5 % tolerance - defines precise clamping/reference level in low-current bias networks |
| Differential Resistance (rdiff) | 25 Ω typical at IZ = 5 mA - determines output impedance and regulation sensitivity to current changes |
| Temperature Coefficient (SZ) | −10.7 mV/K at IZ = 5 mA - quantifies voltage drift per degree Celsius for thermal stability analysis |
| Total Power Dissipation (Ptot) | 300 mW at Tamb = 25 °C on FR4 PCB with 35 mm² copper - sets continuous DC power limit in standard layout |
| Non-repetitive Peak Power (PZSM) | 40 W for tp = 100 µs square wave - enables transient overvoltage suppression without failure |
| Forward Voltage (VF) | 1.1 V max at IF = 100 mA - defines forward conduction loss during polarity-reversal fault conditions |
| Reverse Current (IR) | 0.05 µA max at VR = 11.4 V - specifies leakage below knee voltage, critical for high-impedance biasing |
Pinout & Package
SOD523 (SC-79) ultra-small flat-lead plastic package: 1.25 mm × 0.85 mm footprint, 0.65 mm height, cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal - reverse-biased operation requires higher potential here than at anode |
| 2 | Anode (A) | Connected to ground or lower-potential rail - completes reverse-bias path enabling Zener breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-compact SMD package | SOD523 footprint (1.25 × 0.85 mm) enables placement in dense portable electronics layouts without sacrificing thermal derating |
| Low differential resistance | 25 Ω typical at 5 mA ensures <15 mV output shift per 0.6 mA load change - suitable for stable biasing of op-amp references |
| Controlled temperature coefficient | −10.7 mV/K allows predictable drift modeling in temperature-critical sensor front-ends or ADC reference buffers |
| High surge robustness | 40 W non-repetitive peak power rating supports ESD and lightning-induced transient suppression in USB/IO protection circuits |
| Tight voltage tolerance | ±5 % at 15 V provides deterministic clamping threshold for 12 V–16 V supply rail monitoring without external trimming |
Applications
| Power Supply Rail Clamp | ADC Reference Stabilizer |
|---|---|
|
Use Scenario: Clamping 12 V logic rail against transient spikes in battery-powered IoT sensor nodes. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to shunt excess energy above 15 V threshold. Use Value: Limits voltage excursions to ≤15.75 V (15 V +5 %), preventing damage to 12 V-rated microcontrollers and level-shifters. |
Use Scenario: Providing stable 15 V reference for 12-bit SAR ADC in industrial data acquisition modules. IC Role / Device Role / Timing Role: Precision voltage reference source biased at 5 mA in low-noise, low-drift configuration. Use Value: Delivers 15 V ±0.75 V with 25 Ω dynamic impedance, reducing reference error contribution to <0.05 LSB at full scale. |
| LED Current Limiter Bias | Microcontroller Reset Circuit |
|
Use Scenario: Setting bias point for constant-current LED driver IC in smart lighting control PCBs. IC Role / Device Role / Timing Role: Zener-based voltage reference feeding into current-sense amplifier feedback network. Use Value: Maintains 15 V reference with −10.7 mV/K drift, enabling <±1.5 % current accuracy across −40 °C to +85 °C ambient. |
Use Scenario: Generating clean reset signal for ARM Cortex-M0+ MCU during brown-out events in edge gateways. IC Role / Device Role / Timing Role: Reverse-biased Zener holding reset line high until supply reaches 15 V threshold. Use Value: Triggers reset release at precisely 14.25 V (15 V −5 %), ensuring reliable boot sequencing before core voltage stabilizes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX585-B15,115 | ±2 % tolerance (vs. ±5 %), 20 Ω rdiff typical at 5 mA | Higher precision required in metrology-grade references where 0.3 V tighter tolerance matters | Select when absolute voltage accuracy outweighs cost sensitivity and board space constraints |
| MMSZ5245B-7-F | 15 V ±5 %, SOD-123 package (2.7 × 1.4 mm), 500 mW Ptot | Higher power handling needed in 24 V industrial IO modules with sustained 10 mA bias current | Choose when thermal margin >300 mW is mandatory and 1.8× larger footprint is acceptable |
Compared with BZX585-C15,115, the BZX585-B15,115 improves voltage accuracy at identical size but increases cost, while MMSZ5245B-7-F trades miniaturization for higher power capability and different thermal resistance - selection depends on whether precision, size, or power dominates the design constraint.
Availability
BZX585-C15,115 is available at Aetrix Electronics and suitable for power supply rail clamp, ADC reference stabilizer, LED current limiter bias, and microcontroller reset circuit applications requiring stable component supply in high-volume consumer and industrial production.
Supply support for BZX585-C15,115 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 BZX585 series belongs to Nexperia's general-purpose Zener diode product line, engineered for compact, cost-effective voltage regulation and transient suppression in space- and power-constrained applications.
FAQ
What is the maximum continuous reverse current for BZX585-C15,115 at 25 °C ambient?
The device has no defined maximum continuous reverse current; instead, it is limited by total power dissipation of 300 mW. At 15 V Zener voltage, this corresponds to a maximum steady-state reverse current of 20 mA (300 mW ÷ 15 V), assuming negligible forward drop and ideal thermal conditions on FR4 with 35 mm² copper.
Can BZX585-C15,115 be used in series for higher voltage regulation?
No - Zener diodes in series exhibit cumulative tolerance and temperature coefficient errors, and mismatched dynamic impedances cause uneven voltage division. For >15 V regulation, use a single higher-voltage Zener (e.g., BZX585-C24,115) or a dedicated voltage reference IC with guaranteed tracking.
How does the SOD523 package affect thermal performance compared to SOD-123?
The SOD523 package has higher thermal resistance: Rth(j-a) = 350 K/W versus ~250 K/W for SOD-123. This reduces safe continuous power handling - at 25 °C ambient, BZX585-C15,115 derates to ~170 mW at 85 °C board temperature, requiring careful layout with cathode-side copper pour to maintain 300 mW rating.
Is the cathode marking visible under standard optical inspection?
Yes - the cathode is indicated by a distinct laser-marked bar on the top surface of the SOD523 package, aligned with pin 1 per JEDEC outline SOT523. The bar is 0.15 mm wide and contrasts clearly against the matte black molding compound, supporting automated optical inspection (AOI) and manual verification.
BZX585-C15,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-79, SOD-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 15 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 10.5 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
BZX585-C15,115 FAQ
1.How can I place an order for BZX585-C15,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX585-C15,115 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 BZX585-C15,115 reliable?
The price and inventory of BZX585-C15,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX585-C15,115 is usually 5 days.
3.What payment methods are accepted for BZX585-C15,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX585-C15,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX585-C15,115?
BZX585-C15,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX585-C15,115 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 BZX585-C15,115?
For technical support, including BZX585-C15,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX585-C15,115 requirements.
6.How does Aetrix verify that BZX585-C15,115 is sourced from the original manufacturer or authorized distributors?
All BZX585-C15,115 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 BZX585-C15,115 meets industry standards.
7.What is the process for return or replacement of BZX585-C15,115?
All BZX585-C15,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX585-C15,115, 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 BZX585-C15,115 part is unused and in its original packaging.
Return procedure for BZX585-C15,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX585-C15,115 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…
