My Inquiry
My Account
Nexperia USA Inc. BZX585-C24,115
- Part No.:
- BZX585-C24,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX585-C24,115.pdf
- Description:
- DIODE ZENER 24V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:1,585
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZX585-C24,115 from Nexperia is a 24 V ±5 % Zener voltage regulator diode in SOD523 (SC-79) package, rated for 300 mW total power dissipation and 40 W non-repetitive peak reverse power, used for precision voltage reference and overvoltage clamping in low-power analog circuits and microcontroller I/O protection.
For engineers reviewing the BZX585-C24,115 datasheet, BZX585-C24,115 pinout, BZX585-C24,115 application, or BZX585-C24,115 equivalent, this page delivers verified Zener voltage, differential resistance, thermal resistance, cathode/anode terminal mapping, and real-world regulation use cases - all confirmed from Nexperia's official Rev. 8 product data sheet dated 6 August 2026.
Technical Context
This Zener diode operates in reverse breakdown with a nominal Zener voltage of 24 V at 5 mA test current, exhibiting a typical differential resistance of 60 Ω and a temperature coefficient of +18.4 mV/K at 5 mA, enabling stable voltage reference across ambient temperatures from −65 °C to +150 °C.
Its ultra-small SOD523 package features a thermal resistance of 65 K/W from junction to solder point, supporting reliable operation under transient surges up to 100 µs duration and 40 W peak power, while maintaining <0.05 µA reverse leakage at 19.2 V (0.8 × VZ).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 22.8 V to 25.2 V at IZ = 5 mA - defines regulated output voltage tolerance band for reference design |
| Differential Resistance (rdiff) | 60 Ω typ. at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Temperature Coefficient (SZ) | +18.4 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 short-duration surge suppression without failure |
| Junction-to-Solder-Point Rth | 65 K/W - critical for thermal design when mounting on high-current PCB traces or ground planes |
| Reverse Leakage (IR) | ≤ 0.05 µA at VR = 19.2 V - ensures minimal quiescent current in standby voltage-monitoring circuits |
Pinout & Package
SOD523 (SC-79) ultra-small flat-lead surface-mount package: 1.25 mm × 0.85 mm body, 0.65 mm height, cathode marked by bar on top surface; optimized for high-density PCB layouts and reflow soldering per IPC-J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; polarity marker aligns with PCB silkscreen bar for automated assembly verification |
| 2 | Anode (A) | Connected to ground or lower-potential rail; forms reverse-biased junction during Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Low Differential Resistance | 60 Ω typical at 5 mA - minimizes output voltage variation under load current changes |
| High Surge Withstand | 40 W non-repetitive peak power - protects downstream circuitry from ESD and transient overvoltage events |
| Precision Voltage Tolerance | ±5 % at 24 V nominal - supports cost-sensitive designs requiring tighter regulation than ±10 % alternatives |
| Ultra-Small Footprint | SOD523 (1.25 × 0.85 mm) - enables placement in space-constrained locations near IC power pins or signal lines |
| Low Thermal Resistance | 65 K/W junction-to-solder-point - improves power handling in thermally isolated PCB regions |
Applications
| Microcontroller I/O Protection | Low-Power Sensor Reference |
|---|---|
|
Use Scenario: Clamping 3.3 V or 5 V MCU GPIO lines against ESD and overvoltage transients. IC Role / Device Role / Timing Role: Zener diode connected anode-to-ground, cathode-to-signal line, operating in reverse breakdown during fault conditions. Use Value: Limits voltage to ≤25.2 V during surges while drawing <600 mA peak current (40 W / 24 V), preventing latch-up or permanent damage. |
Use Scenario: Providing stable 24 V reference for analog front-end biasing in battery-powered environmental sensors. IC Role / Device Role / Timing Role: Shunt regulator sourcing fixed voltage to op-amp bias network or ADC reference divider. Use Value: Delivers <0.05 µA leakage at 19.2 V and 18.4 mV/K tempco, enabling sub-0.1 % reference drift over −40 °C to +85 °C. |
| DC-DC Feedback Divider | Industrial Signal Conditioning |
|
Use Scenario: Setting output voltage in adjustable buck converter feedback loop using resistor divider into Zener cathode. IC Role / Device Role / Timing Role: Precision shunt element replacing TL431 in low-current (<1 mA) feedback paths. Use Value: 60 Ω rdiff ensures <15 mV error contribution at 250 µA divider current, improving output accuracy vs. ±10 % Zeners. |
Use Scenario: Level-shifting and overvoltage limiting in 4–20 mA current-loop transmitter outputs. IC Role / Device Role / Timing Role: Reverse-connected clamp protecting DAC output stage from field-wiring faults. Use Value: Withstands 40 W surges without degradation, maintaining 24 V regulation integrity after repeated 100 µs transients per IEC 61000-4-5. |
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-B24,115 | ±2 % tolerance (23.5–24.5 V) vs. ±5 % (22.8–25.2 V); identical package, power ratings, and rdiff | Required where tighter voltage accuracy is needed for calibration-critical references | Select BZX585-B24,115 when system-level tolerance budget demands <±0.5 V deviation at 24 V nominal |
| MMSZ5249B-7-F | 24 V ±5 % in SOD-123; higher Ptot = 500 mW but larger footprint (3.5 × 1.6 mm) and rdiff = 35 Ω | Better thermal performance in high-ambient environments but incompatible with ultra-dense layouts | Choose MMSZ5249B-7-F only if board space allows larger package and >300 mW continuous dissipation is required |
Compared with BZX585-C24,115, the BZX585-B24,115 offers tighter voltage control at identical size and surge capability, while MMSZ5249B-7-F trades miniaturization for higher steady-state power handling - making the C-grade optimal for space-constrained, cost-sensitive 24 V clamping where ±5 % is sufficient.
Availability
BZX585-C24,115 is available at Aetrix Electronics and suitable for microcontroller I/O protection, low-power sensor reference, DC-DC feedback divider, and industrial signal conditioning requiring stable component supply with guaranteed long-term manufacturability.
Supply support for BZX585-C24,115 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, serving automotive, industrial, and consumer markets with ISO/TS 16949-certified manufacturing.
The BZX585 series belongs to Nexperia's general-purpose Zener diode product line, engineered for compact, cost-effective voltage regulation and transient protection in space- and power-constrained applications.
FAQ
What is the maximum continuous reverse current for BZX585-C24,115 at 25 °C?
The absolute maximum forward current is 200 mA, but for Zener operation, the recommended continuous reverse current is limited by power dissipation: at 24 V, 300 mW allows up to 12.5 mA (300 mW ÷ 24 V) with adequate PCB copper area. Exceeding this risks junction overheating beyond 150 °C.
How does the cathode marking appear on the SOD523 package?
The cathode is indicated by a visible bar on the top surface of the SOD523 package, aligned with Pin 1 per Nexperia's package outline drawing (Fig. 11). This matches the "K" designation in Table 2 and ensures correct orientation during automated pick-and-place assembly.
Can BZX585-C24,115 be used in place of a 24 V Zener with ±2 % tolerance?
No - BZX585-C24,115 has ±5 % tolerance (22.8–25.2 V), whereas ±2 % parts like BZX585-B24,115 specify 23.5–24.5 V. Substituting without circuit validation may cause out-of-spec bias points or reduced noise margin in precision references.
What is the typical reverse leakage current at 80 % of nominal Zener voltage?
At VR = 19.2 V (80 % of 24 V), reverse leakage is ≤0.05 µA per Table 8. This ultra-low value ensures negligible loading on high-impedance nodes such as op-amp inputs or microcontroller wake-up comparators.
BZX585-C24,115 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):
- 24 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 70 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 16.8 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-C24,115 FAQ
1.How can I place an order for BZX585-C24,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX585-C24,115 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-C24,115 reliable?
The price and inventory of BZX585-C24,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX585-C24,115 is usually 5 days.
3.What payment methods are accepted for BZX585-C24,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX585-C24,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX585-C24,115?
BZX585-C24,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX585-C24,115 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-C24,115?
For technical support, including BZX585-C24,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX585-C24,115 requirements.
6.How does Aetrix verify that BZX585-C24,115 is sourced from the original manufacturer or authorized distributors?
All BZX585-C24,115 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-C24,115 meets industry standards.
7.What is the process for return or replacement of BZX585-C24,115?
All BZX585-C24,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX585-C24,115, 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-C24,115 part is unused and in its original packaging.
Return procedure for BZX585-C24,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX585-C24,115 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…
