My Inquiry
My Account
Nexperia USA Inc. BZX585-C27,115
.jpg)
- Part No.:
- BZX585-C27,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZX585-C27,115.pdf
- Description:
- DIODE ZENER 27V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:2,053
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZX585-C27,115 from Nexperia is a 27 V ±5 % Zener voltage regulator diode in SOD523 (SC-79) ultra-small SMD package, rated for 300 mW total power dissipation and 40 W non-repetitive peak reverse power, used for precision voltage reference and overvoltage protection in space-constrained low-power circuits.
For engineers reviewing the BZX585-C27,115 datasheet, BZX585-C27,115 pinout, BZX585-C27,115 application, or BZX585-C27,115 equivalent, key selection criteria include Zener voltage tolerance (±5 %), differential resistance (65 Ω at IZ = 2 mA), thermal resistance (65 K/W junction-to-solder point), and SC-79 package compatibility with high-density PCB layouts.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable 27 V regulation across load and line variations, with a temperature coefficient of +21.4 mV/K at IZ = 2 mA - indicating positive drift that must be compensated in precision references. Its low 0.05 µA reverse current at VR = 25 V ensures minimal leakage in standby modes.
The device features ultra-low thermal resistance (Rth(j-sp) = 65 K/W) due to direct cathode tab soldering, enabling reliable operation up to 150 °C junction temperature. Its 1.1 V forward voltage at 100 mA supports use as a low-drop clamp or polarity indicator in dual-role designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 27 V nominal, ±5 % tolerance (25.65 V to 28.35 V) - defines regulation setpoint accuracy under 2 mA test current |
| Differential Resistance (rdiff) | 65 Ω typical at IZ = 2 mA - determines output impedance and load regulation error |
| Power Dissipation (Ptot) | 300 mW at Tamb = 25 °C on FR4 PCB with 35 mm² copper - sets continuous thermal limit in standard layout |
| Non-repetitive Peak Power (PZSM) | 40 W for tp = 100 µs square wave - enables transient surge suppression without failure |
| Reverse Current (IR) | 0.05 µA max at VR = 25 V - ensures negligible standby power loss in battery-powered systems |
| Thermal Resistance (Rth(j-sp)) | 65 K/W junction-to-solder point - allows direct thermal path to PCB copper for efficient heat extraction |
| Capacitance (Cd) | 18.9 pF at f = 1 MHz, VR = 0 V - limits high-frequency noise coupling in RF-adjacent circuits |
Pinout & Package
SOD523 (SC-79) ultra-small flat-lead surface-mount plastic package: 1.25 mm × 0.85 mm body, 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; carries reverse breakdown current |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-compact SOD523 footprint | Enables placement in <1.1 mm² board area - critical for wearables and miniaturized IoT sensors |
| ±5 % Zener voltage tolerance | Supports cost-sensitive applications where tighter tolerance is unnecessary, reducing BOM cost vs. ±2 % variants |
| Low differential resistance (65 Ω) | Minimizes output voltage shift under ±1 mA load variation - improves stability in feedback networks |
| High non-repetitive surge rating (40 W) | Withstands ESD and inductive kick events without degradation - eliminates need for external TVS in many cases |
| Junction-to-solder-point thermal resistance | 65 K/W enables >200 mW sustained dissipation on minimal copper - simplifies thermal design |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Providing stable 27 V reference for ADC biasing or op-amp feedback in industrial sensor signal chains. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to fix reference node voltage independent of supply ripple. Use Value: ±5 % tolerance and 65 Ω rdiff ensure reference drift remains within 15 mV over 1 mA load change - sufficient for 12-bit system accuracy. |
Use Scenario: Protecting microcontroller I/O pins from 30 V transients induced by relay switching in PLC modules. IC Role / Device Role / Timing Role: Fast-acting shunt clamp that conducts above 27 V to divert surge energy to ground. Use Value: 40 W non-repetitive peak power rating absorbs 100 µs surges without degradation - meets IEC 61000-4-4 Level 3 requirements. |
| Low-Power Voltage Monitor | LED Current Regulation |
Use Scenario: Detecting brownout conditions in battery-powered medical monitors using comparator input referenced to 27 V Zener. IC Role / Device Role / Timing Role: Precision voltage threshold element defining trip point for undervoltage lockout logic. Use Value: 0.05 µA IR at 25 V ensures <1 nW quiescent power draw - extends shelf life of sealed lithium primary cells. |
Use Scenario: Setting constant current for high-brightness white LED strings in smart lighting control boards. IC Role / Device Role / Timing Role: Shunt regulator establishing fixed voltage drop across current-sense resistor. Use Value: 1.1 V VF at 100 mA allows use as forward-biased clamp to limit LED string voltage swing - reduces MOSFET stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX585-B27,115 | ±2 % Zener tolerance (26.46–27.54 V) vs. ±5 % (25.65–28.35 V); identical package and power ratings | Required where tighter regulation stability is needed for metrology-grade references | Select when reference accuracy dominates cost and board space constraints |
| MMSZ5256B-7-F | 27 V ±5 %, SOD-123 package (2.7 × 1.4 mm), 500 mW Ptot, higher rdiff (100 Ω) | Preferred for higher-power dissipation needs but occupies >3× more PCB area | Choose when thermal margin is critical and layout space permits larger footprint |
Compared with BZX585-B27,115, the C-series offers relaxed tolerance for cost-sensitive designs; versus MMSZ5256B-7-F, it trades 200 mW extra power headroom for 65 % smaller footprint and lower parasitic capacitance - optimizing for miniaturization over raw power handling.
Availability
BZX585-C27,115 is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable medical devices, and automotive body-control modules requiring stable component supply with guaranteed long-term sourcing.
Supply support for BZX585-C27,115 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 delivering high-performance, reliable discrete, logic, and MOSFET devices optimized for efficiency and miniaturization.
The BZX585 series targets space-constrained, low-power regulation needs with ultra-small SOD523 packaging and tightly controlled Zener characteristics for consumer, industrial, and computing applications.
FAQ
What is the maximum continuous reverse current the BZX585-C27,115 can sustain?
The device has no specified maximum continuous reverse current; instead, its 300 mW total power dissipation limit at 25 °C ambient defines safe DC operation. At 27 V, this corresponds to ~11.1 mA average Zener current. Exceeding this requires derating per the Rth(j-a) = 350 K/W curve or active thermal management.
Can BZX585-C27,115 be used in parallel for higher power handling?
No - Zener diodes exhibit negative temperature coefficients below ~5 V and positive above, but even within the same batch, slight VZ mismatches cause current hogging. Parallel connection risks thermal runaway and premature failure; use a single higher-rated device or external current-sharing resistors if absolutely required.
How does the cathode marking align with the SOD523 package outline?
The cathode is marked by a visible bar on the top surface of the SOD523 package, aligned with Pin 1 per Figure 11 in the datasheet. When viewed from above with the marking bar leftmost, Pin 1 (cathode) is the left lead and Pin 2 (anode) is the right lead - matching the standard SC-79 pinning convention.
Is BZX585-C27,115 suitable for automotive applications?
No - this part is not AEC-Q200 qualified. Nexperia explicitly states in Section 14 that non-automotive qualified products like BZX585-C27,115 are unsuitable for safety-critical or automotive use. For automotive designs, select AEC-Q200-compliant Zeners such as PZUxxL3A series with validated qualification data.
BZX585-C27,115 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):
- 27 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 18.9 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-C27,115 FAQ
1.How can I place an order for BZX585-C27,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX585-C27,115 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-C27,115 reliable?
The price and inventory of BZX585-C27,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX585-C27,115 is usually 5 days.
3.What payment methods are accepted for BZX585-C27,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX585-C27,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX585-C27,115?
BZX585-C27,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX585-C27,115 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-C27,115?
For technical support, including BZX585-C27,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX585-C27,115 requirements.
6.How does Aetrix verify that BZX585-C27,115 is sourced from the original manufacturer or authorized distributors?
All BZX585-C27,115 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-C27,115 meets industry standards.
7.What is the process for return or replacement of BZX585-C27,115?
All BZX585-C27,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX585-C27,115, 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-C27,115 part is unused and in its original packaging.
Return procedure for BZX585-C27,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX585-C27,115 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…
