My Inquiry
My Account
Nexperia USA Inc. BZX8850-C39YL
- Part No.:
- BZX8850-C39YL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-882
- Datasheet:
-
BZX8850-C39YL.pdf
- Description:
- DIODE ZENER 39V 250MW DFN1006-2
- Quantity:
- Payment:
- Shipping:
Inventory:6,904
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZX8850-C39YL from Nexperia is a low-current Zener diode in SOD882 (DFN1006-2) package, designed for precision voltage regulation at 39 V nominal with ±5 % tolerance. It delivers stable reference voltage at 50 μA test current, features 350 Ω differential resistance at 2 mA, and exhibits 0.05 μA reverse leakage at rated voltage-ideal for battery-powered sensor biasing and low-power analog signal conditioning.
For engineers reviewing the BZX8850-C39YL datasheet, BZX8850-C39YL pinout, BZX8850-C39YL application, or BZX8850-C39YL equivalent, this part supports low-quiescent-current voltage clamping, portable device power rail stabilization, and precision reference generation where thermal stability and ultra-small footprint are critical.
Technical Context
This Zener operates in reverse breakdown mode with a nominal working voltage of 39 V (min 37.05 V, max 40.95 V at IZ = 50 μA), optimized for low-bias operation. Its temperature coefficient is +33.4 mV/K, indicating positive drift over temperature, and its diode capacitance is 41.2 pF at 0 V and 1 MHz.
The device uses a planar silicon junction structure with intentional minor leakage enhancement per AN90031 to improve switching speed and reduce noise. Thermal resistance from junction to ambient is 500 K/W on FR4 PCB, limiting continuous power dissipation to 250 mW at Tamb ≤ 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 39 V (37.05–40.95 V range at 50 μA); enables precise 39 V rail clamping or reference in low-current circuits |
| Tolerance | ±5 % (C-series); allows predictable voltage margining without trimming in cost-sensitive designs |
| Differential Resistance | 350 Ω at 2 mA; determines output impedance and load regulation sensitivity in shunt regulator configurations |
| Reverse Leakage Current | 0.05 μA at VR = 39 V; ensures minimal standby power loss in always-on battery applications |
| Forward Voltage | 0.9 V at 10 mA; defines conduction threshold when used in series protection or polarity detection |
| Power Dissipation | 250 mW maximum at Tamb ≤ 25 °C; sets safe operating area for continuous DC regulation without heatsinking |
| Package | SOD882 (DFN1006-2); 1.0 × 0.6 × 0.5 mm leadless footprint ideal for space-constrained wearables and IoT nodes |
Pinout & Package
SOD882 (DFN1006-2) is a 2-terminal, leadless surface-mount plastic package with cathode marked by a bar on the top surface. Body dimensions: 1.0 mm × 0.6 mm × 0.5 mm; terminals are co-planar and soldered directly to PCB pads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to regulated voltage node; reverse-biased terminal where Zener breakdown occurs |
| 2 (A) | Anode | Connected to ground or lower-potential rail; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 μA-enables regulation in microamp-level bias networks without loading source |
| Optimized leakage profile | Intentional minor IR increase per AN90031 improves transient response and reduces broadband noise |
| Ultra-small footprint | DFN1006-2 package saves >70 % board area vs. SOD-123, critical for miniaturized PCBs |
| Stable thermal coefficient | +33.4 mV/K at 39 V-predictable drift behavior simplifies temperature compensation in reference designs |
| Robust surge rating | 40 W non-repetitive peak reverse power (100 μs pulse)-withstands ESD transients in I/O protection |
Applications
| Portable Sensor Biasing | IoT Node Voltage Clamping |
|---|---|
|
Use Scenario: Providing stable 39 V bias to MEMS pressure sensors in battery-powered environmental monitors. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown as a passive shunt voltage reference. Use Value: 0.05 μA leakage preserves multi-year battery life; ±5 % tolerance meets industrial sensor accuracy requirements. |
Use Scenario: Clamping 39 V supply rail against surges in NB-IoT cellular modems. IC Role / Device Role / Timing Role: Transient voltage suppressor placed between VCC and GND. Use Value: 40 W non-repetitive surge rating absorbs ESD events; 350 Ω dynamic impedance limits clamping overshoot. |
| Low-Power Analog Reference | Wearable Device Power Rail Stabilization |
|
Use Scenario: Generating a clean 39 V reference for 16-bit ADC front-end in portable medical instrumentation. IC Role / Device Role / Timing Role: Precision voltage reference element in ratiometric measurement circuitry. Use Value: +33.4 mV/K TC enables first-order compensation; 41.2 pF capacitance avoids high-frequency coupling into sensitive analog paths. |
Use Scenario: Stabilizing 39 V intermediate rail in compact smartwatch charging subsystems. IC Role / Device Role / Timing Role: Shunt regulator maintaining constant voltage under variable load conditions. Use Value: 250 mW power limit aligns with thermal constraints of thin-flex PCBs; DFN1006-2 footprint fits within 1.2 mm² layout area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX8850-B39 | ±2 % tolerance (vs. ±5 %), higher initial cost, tighter VZ spread (38.2–39.8 V) | Preferred where absolute voltage accuracy is prioritized over cost and leakage | Select when system calibration budget allows tighter tolerance and leakage is not critical |
| MMSZ5257ET1G | 39 V ±5 %, SOD-123 package (2.7 × 1.6 mm), 500 mW Ptot, 100 Ω rdiff at 20 mA | Better power handling but 4.5× larger footprint; higher test current (20 mA) increases quiescent draw | Choose only if board space permits and higher current regulation is required |
Compared with BZX8850-B39, the C39YL trades voltage precision for lower cost and optimized low-current performance; versus MMSZ5257ET1G, it sacrifices power capability and dynamic impedance for ultra-compact size and microamp-level operation.
Availability
BZX8850-C39YL is available at Aetrix Electronics and suitable for portable sensor biasing, IoT node voltage clamping, and low-power analog reference applications requiring stable component supply across high-mix, low-volume production runs.
Supply support for BZX8850-C39YL 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-performance, energy-efficient components for automotive, industrial, and consumer markets.
The BZX8850 series belongs to Nexperia's precision low-current Zener portfolio, engineered specifically for space- and power-constrained applications demanding reliable voltage regulation below 1 mA.
FAQ
What is the maximum continuous reverse power dissipation for BZX8850-C39YL?
The maximum total power dissipation is 250 mW at ambient temperature ≤ 25 °C when mounted on a standard FR4 PCB with single-sided copper. Derating is required above 25 °C at 2.0 mW/°C, based on a thermal resistance of 500 K/W.
Does BZX8850-C39YL support bidirectional ESD protection?
No-it is a unidirectional Zener diode configured for reverse-biased regulation only. Its anode must be tied to ground or lower potential; forward conduction (anode > cathode) yields ~0.9 V drop but offers no defined clamping behavior for positive transients.
How does the "C" suffix differ from "B" in the BZX8850 series?
The "C" suffix denotes ±5 % voltage tolerance and incorporates intentional minor leakage current enhancement per AN90031 for improved switching speed and reduced noise. The "B" variant offers ±2 % tolerance but lacks the optimized leakage profile.
Can BZX8850-C39YL be used in place of a 39 V TVS diode?
No-while it handles 40 W non-repetitive surges, it is not rated or characterized for standardized ESD/IEC 61000-4-2 or surge immunity testing. Its primary function is precision DC voltage regulation, not transient suppression compliance.
BZX8850-C39YL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX8850
- Package/Case:
- SOD-882
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 39 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 130 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 29.6 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DFN1006-2
BZX8850-C39YL FAQ
1.How can I place an order for BZX8850-C39YL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8850-C39YL 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 BZX8850-C39YL reliable?
The price and inventory of BZX8850-C39YL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX8850-C39YL is usually 5 days.
3.What payment methods are accepted for BZX8850-C39YL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8850-C39YL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8850-C39YL?
BZX8850-C39YL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8850-C39YL 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 BZX8850-C39YL?
For technical support, including BZX8850-C39YL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8850-C39YL requirements.
6.How does Aetrix verify that BZX8850-C39YL is sourced from the original manufacturer or authorized distributors?
All BZX8850-C39YL 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 BZX8850-C39YL meets industry standards.
7.What is the process for return or replacement of BZX8850-C39YL?
All BZX8850-C39YL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8850-C39YL, 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 BZX8850-C39YL part is unused and in its original packaging.
Return procedure for BZX8850-C39YL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8850-C39YL 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…
