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Nexperia USA Inc. BZX8850S-B27-QYL
- Part No.:
- BZX8850S-B27-QYL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-882
- Datasheet:
-
BZX8850S-B27-QYL.pdf
- Description:
- DIODE ZENER 27V 365MW DFN1006BD
- Quantity:
- Payment:
- Shipping:
Inventory:6,701
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Product details
Overview
BZX8850S-B27-QYL from Nexperia is a low-current Zener voltage regulator diode in the BZX8850S-Q series, designed for precision voltage reference and regulation in space-constrained, low-power circuits. It delivers a nominal 27 V Zener voltage at 50 µA test current, with ±2 % tolerance (B-series), 365 mW total power dissipation, and AEC-Q101 qualification for automotive use.
For engineers reviewing the BZX8850S-B27-QYL datasheet, BZX8850S-B27-QYL pinout, BZX8850S-B27-QYL application, or BZX8850S-B27-QYL equivalent, key selection criteria include its ultra-low test current operation, side-wettable DFN1006BD-2 package for automated optical inspection, differential resistance of 300 Ω at 5 mA, and temperature coefficient of +20.4 mV/K - critical for stable biasing in battery-powered sensor nodes and automotive ECUs.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified working voltage of 26.5 V to 27.5 V at IZ = 50 µA, exhibiting a positive temperature coefficient (+20.4 mV/K) that ensures predictable drift over temperature. Its low 50 µA test current enables stable regulation in micro-power circuits where quiescent current must remain below 100 µA.
The device uses a planar silicon process optimized for low leakage and fast transient response, with intentional minor leakage rise (per AN90031) to reduce noise and improve switching behavior in feedback paths. It is rated for junction temperatures up to 150 °C and qualified per AEC-Q101 for under-hood automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 26.5 V to 27.5 V at IZ = 50 µA - defines precise regulation point for low-bias reference circuits |
| Tolerance | ±2 % (B-series) - enables tight voltage margin control in safety-critical automotive sensors |
| Differential Resistance (rdiff) | 300 Ω max at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Temperature Coefficient (SZ) | +20.4 mV/K - quantifies voltage drift per degree Celsius for thermal design margining |
| Total Power Dissipation (Ptot) | 365 mW at Tamb ≤ 25 °C on FR4 PCB - sets maximum continuous power handling in standard layout |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA - defines conduction loss when used in forward-biased protection paths |
| Junction Temperature (Tj) | −55 °C to +150 °C - supports operation in extended-temperature automotive and industrial environments |
Pinout & Package
Package: DFN1006BD-2 (SOD882BD), ultra-small leadless surface-mount package measuring 1.0 mm × 0.6 mm × 0.47 mm with side-wettable flanks for solder-joint inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (marked side) | Cathode (K) | Connected to regulated voltage node; polarity marker (bar) identifies cathode for correct PCB orientation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low test current | Specified at 50 µA - enables stable regulation in micropower systems (e.g., coin-cell IoT sensors) |
| AEC-Q101 qualification | Qualified for automotive applications - supports deployment in engine control, body electronics, and ADAS modules |
| Side-wettable flanks | DFN1006BD-2 package geometry - allows automated optical inspection (AOI) of solder joints without X-ray |
| Optimized leakage profile | Intentional minor IR rise per AN90031 - reduces high-frequency noise and improves transient response in feedback loops |
| Narrow voltage tolerance | ±2 % (B-series) - eliminates need for post-assembly trimming in precision voltage references |
Applications
| Automotive Sensor Biasing | Portable Gas Detector Reference |
|---|---|
|
Use Scenario: Providing stable 27 V bias to MEMS pressure transducers in engine manifold sensors. IC Role / Device Role / Timing Role: Zener voltage reference diode operating in reverse breakdown to fix reference potential. Use Value: ±2 % tolerance and +20.4 mV/K TC ensure <±1.2 % total drift over −40 °C to +125 °C, meeting ASIL-B calibration requirements. |
Use Scenario: Generating precise reference voltage for electrochemical gas sensor signal conditioning in handheld detectors. IC Role / Device Role / Timing Role: Low-current Zener regulator supplying reference to ADC input stage. Use Value: 50 µA test current enables operation from 3.3 V LDO with resistive divider, extending battery life beyond 2 years on CR2032. |
| Industrial PLC Input Protection | Medical Wearable Power Monitoring |
|
Use Scenario: Clamping and regulating 24 V DC input signals in programmable logic controller analog input modules. IC Role / Device Role / Timing Role: Overvoltage protection and precision reference element in front-end signal chain. Use Value: 365 mW Ptot and 300 Ω rdiff allow robust clamping of 100 ms surges while maintaining <10 mV regulation error at 100 µA load. |
Use Scenario: Supplying calibrated reference to fuel gauge IC in rechargeable lithium-polymer powered wearable ECG monitors. IC Role / Device Role / Timing Role: Stable voltage reference for coulomb counter accuracy during sleep/active transitions. Use Value: Side-wettable flanks ensure reliable reflow in 0201-class assembly, and AEC-Q101 qualification validates long-term reliability under cyclic thermal stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX8840S-B27-QYL | Same 27 V, ±2 %, but in larger SOD323 package (1.7 mm × 1.3 mm); 500 mW Ptot; no side-wettable flanks | Not suitable for AOI-dependent high-volume automotive SMT lines; better for prototyping or manual rework | Select if board real estate permits larger footprint and AOI is not required. |
| MMSZ5256ET1G | 27 V, ±5 %, SOD-123 package; 500 mW Ptot; no AEC-Q101 qualification; 700 Ω rdiff at 20 mA | Lacks automotive qualification and low-current optimization; higher rdiff degrades regulation under varying load | Select only for cost-sensitive non-automotive consumer applications with relaxed accuracy and reliability needs. |
Compared with BZX8850S-B27-QYL, the BZX8840S-B27-QYL offers higher power headroom but sacrifices AOI compatibility and board density, while the MMSZ5256ET1G trades AEC-Q101 compliance and low-current performance for lower unit cost in non-critical designs.
Availability
BZX8850S-B27-QYL is available at Aetrix Electronics and suitable for automotive sensor biasing, portable gas detector references, and industrial PLC input protection requiring stable component supply across extended temperature ranges and high-reliability production cycles.
Supply support for BZX8850S-B27-QYL 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 components and advanced packaging technologies.
The BZX8850S-Q series belongs to Nexperia's precision Zener regulator portfolio, engineered specifically for low-current, space-constrained applications in automotive, industrial, and portable electronics where AEC-Q101 compliance and side-wettable manufacturability are mandatory.
FAQ
What is the maximum reverse current (IR) at 24 V for BZX8850S-B27-QYL?
At 24 V reverse bias and Tj = 25 °C, the typical reverse current is less than 0.05 µA, as confirmed in Table 8 of the datasheet for B-series 27 V types. This ultra-low leakage ensures minimal power loss in always-on monitoring circuits and preserves battery life in energy-harvesting systems.
Can BZX8850S-B27-QYL be used in parallel for higher power handling?
No - Zener diodes exhibit manufacturing variation in VZ and dynamic resistance, causing current imbalance when paralleled. The datasheet does not recommend parallel operation. For higher power, select a single higher-rated device such as the PZM27NB or use an active shunt regulator circuit.
Is the marking code 'T1' on the device body sufficient to confirm it is BZX8850S-B27-QYL?
Yes - per Table 4, 'T1' is the official marking code for BZX8850S-B27-QYL. The cathode is indicated by a bar on the top surface adjacent to pin 1, consistent with the simplified outline in Table 2 and Figure 9.
Does the 365 mW power rating apply at elevated ambient temperatures?
No - the 365 mW rating is valid only at Tamb ≤ 25 °C on a standard FR4 PCB with single-sided copper. Above 25 °C, derating applies per the thermal resistance Rth(j-a) = 340 K/W; at 85 °C ambient, maximum allowable power drops to approximately 250 mW to maintain Tj ≤ 150 °C.
BZX8850S-B27-QYL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX8850S-Q
- Package/Case:
- SOD-882
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 27 V
- Tolerance:
- ±2%
- Power - Max:
- 365 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 20.4 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DFN1006BD-2
BZX8850S-B27-QYL FAQ
1.How can I place an order for BZX8850S-B27-QYL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8850S-B27-QYL 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 BZX8850S-B27-QYL reliable?
The price and inventory of BZX8850S-B27-QYL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX8850S-B27-QYL is usually 5 days.
3.What payment methods are accepted for BZX8850S-B27-QYL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8850S-B27-QYL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8850S-B27-QYL?
BZX8850S-B27-QYL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8850S-B27-QYL 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 BZX8850S-B27-QYL?
For technical support, including BZX8850S-B27-QYL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8850S-B27-QYL requirements.
6.How does Aetrix verify that BZX8850S-B27-QYL is sourced from the original manufacturer or authorized distributors?
All BZX8850S-B27-QYL 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 BZX8850S-B27-QYL meets industry standards.
7.What is the process for return or replacement of BZX8850S-B27-QYL?
All BZX8850S-B27-QYL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8850S-B27-QYL, 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 BZX8850S-B27-QYL part is unused and in its original packaging.
Return procedure for BZX8850S-B27-QYL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8850S-B27-QYL Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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