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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

Nexperia USA Inc. BZV49-C27,115

Name: BZV49-C27,115
Brand: Nexperia USA Inc.
SKU: BZV49-C27,115
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZV49-C27,115

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

Package:: TO-243AA

Datasheet:: BZV49-C27,115.pdf

Description:: DIODE ZENER 27V 1W SOT89

Quantity:: RFQ Add To RFQ list

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Inventory:2,891

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Product details

Overview

BZV49-C27,115 from Nexperia is a medium-power Zener voltage regulator diode in SOT89 package, designed for precision DC voltage reference and regulation in power supply feedback paths. It delivers a nominal 27 V working voltage at 2 mA test current, with ±5% tolerance, 25 Ω typical differential resistance, and −1.0 mV/K temperature coefficient. Used in industrial power supplies and automotive sensor biasing circuits where stable 27 V reference is required.

For engineers reviewing the BZV49-C27,115 datasheet, BZV49-C27,115 pinout, BZV49-C27,115 application, or BZV49-C27,115 equivalent, key selection criteria include Zener voltage accuracy at low test current (2 mA), thermal resistance (125 K/W junction-to-ambient), non-repetitive peak reverse power capability (40 W), and SOT89 thermal pad layout compatibility for PCB heat dissipation.

Technical Context

This Zener diode operates in reverse breakdown mode to maintain a stable voltage across its terminals under varying load and input conditions. Its 27 V nominal Zener voltage is specified at I_Ztest = 2 mA, with differential resistance of 25 Ω (typ) ensuring minimal voltage shift under current variation.

The device features a negative temperature coefficient of −1.0 mV/K, indicating voltage decreases slightly with rising junction temperature - critical for thermal drift compensation in precision references. It is rated for 1 W total power dissipation at 25 °C ambient when mounted on a 2.5 cm² ceramic substrate.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage V_Z	25.1–28.9 V at I_Z = 2 mA; ensures stable 27 V reference within ±5% tolerance band
Differential Resistance r_dif	25 Ω (typ); limits output voltage variation to ~50 mV per 2 mA load change
Temperature Coefficient S_Z	−1.0 mV/K (typ); enables predictable thermal drift correction in closed-loop designs
Total Power Dissipation P_tot	1 W at T_amb = 25 °C; requires thermal pad layout per SOT89 footprint for reliable operation
Non-repetitive Peak Power P_ZSM	40 W for 100 μs; supports transient overvoltage clamping in surge-protected inputs
Junction Temperature T_j	150 °C max; defines maximum allowable die temperature before parametric shift or failure
Reverse Current I_R	≤0.05 μA at V_R = 20.3 V; ensures negligible leakage in high-impedance bias networks

Pinout & Package

Package: SOT89 (SC-62), plastic surface-mounted package with exposed collector pad for enhanced thermal conduction. Dimensions: 4.6 × 2.6 × 1.6 mm (L × W × H), with 3 leads and 1.5 mm lead pitch.

Pin/Terminal	Circuit Role	Design Meaning
1	Anode	Connected to lower-potential node in reverse-bias configuration; forms cathode-anode voltage drop during regulation
2	Cathode	Connected to regulated output node; carries full Zener current and must route to ground or return path with low inductance
3	Anode	Electrically tied to Pin 1; provides second anode connection for mechanical stability and improved thermal coupling to PCB copper

Key Features

Feature	Design Value
E24 ±5% voltage grading	Enables precise binning across 37 types (2.4–75 V); simplifies inventory management for multi-rail systems
SOT89 thermal pad	Reduces R_th(j-a) to 125 K/W; allows 1 W continuous dissipation without heatsink in standard FR4 layouts
Low leakage at 75% V_Z	I_R ≤ 0.05 μA at 20.3 V ensures <1 nW standby loss in battery-backed reference circuits
Controlled tempco	−1.0 mV/K typ enables first-order thermal compensation when paired with positive-coefficient components

Applications

Industrial Power Supply Feedback

Automotive Sensor Biasing

Use Scenario: Regulates feedback voltage in isolated flyback converters delivering 27 V auxiliary rail.

IC Role / Device Role / Timing Role: Zener diode providing stable 27 V reference to optocoupler input, closing primary-side regulation loop.

Use Value: ±5% V_Z tolerance and 25 Ω r_dif ensure <±0.5% output voltage accuracy across line/load/temperature.

Use Scenario: Supplies bias voltage to pressure transducer bridge in engine control unit.

IC Role / Device Role / Timing Role: Precision voltage reference establishing excitation potential for Wheatstone bridge sensing element.

Use Value: −1.0 mV/K tempco matches bridge thermal drift, reducing net system error to <0.1%/°C.

Programmable Overvoltage Clamp

Microcontroller Reset Circuit

Use Scenario: Clamps 30 V rail during load dump events in 24 V vehicle electronics.

IC Role / Device Role / Timing Role: Transient voltage suppressor absorbing 40 W surges for 100 μs via non-repetitive peak rating.

Use Value: 40 W P_ZSM withstands ISO 7637-2 Pulse 5a without degradation, protecting downstream LDOs.

Use Scenario: Generates clean 27 V reset threshold for FPGA configuration monitoring circuit.

IC Role / Device Role / Timing Role: Reference element in comparator-based reset generator detecting brown-out conditions.

Use Value: Sub-μA leakage at 20.3 V prevents false triggering during low-power sleep modes.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener regulation applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX84-C27	Same 27 V Zener voltage but in SOT23 package; higher r_dif (40 Ω typ) and no thermal pad	Limited to ≤300 mW continuous dissipation; unsuitable for >100 mA regulation loads	Select when board space is constrained and thermal load is <300 mW
MMSZ5252B	27 V Zener in SOD-123; 100 mW P_tot, 35 Ω r_dif, no thermal pad	Only suitable for signal-level referencing (<5 mA), not power regulation	Select only for low-current biasing where 1 W capability is unnecessary

Compared with BZX84-C27 and MMSZ5252B, the BZV49-C27,115 uniquely supports 1 W continuous regulation with SOT89 thermal pad integration - making it the sole choice for industrial 27 V rail stabilization requiring both precision and power handling.

Availability

BZV49-C27,115 is available at Aetrix Electronics and suitable for industrial power supplies, automotive sensor interfaces, programmable clamp circuits, and microcontroller reset generation requiring stable component supply and long-term lifecycle continuity.

Supply support for BZV49-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 leader in discrete semiconductors, formed in 2017 from the former NXP Standard Products division, with focus on automotive, industrial, and computing applications.

The BZV49 series belongs to Nexperia's voltage regulator diode product line, engineered specifically for medium-power, precision DC voltage reference and regulation in thermally demanding environments.

FAQ

What is the maximum continuous Zener current for BZV49-C27,115?

The device supports up to 250 mA continuous forward current (I_F), but in Zener regulation mode, maximum continuous reverse current is derived from P_tot = 1 W and V_Z ≈ 27 V, yielding ~37 mA. Exceeding this risks thermal runaway unless PCB thermal design reduces R_th(j-a).

Can BZV49-C27,115 be used in parallel for higher current handling?

No - Zener diodes exhibit negative tempco and manufacturing spread, causing current hogging in parallel configurations. Use a single device with appropriate heatsinking or select a higher-power alternative like BZX85-C27 in TO-220 if >37 mA continuous regulation is needed.

Is the SOT89 thermal pad electrically isolated?

Yes - the exposed pad (Pin 3) is internally connected to Pin 1 (anode), not cathode or ground. It must be soldered to a dedicated copper pour tied to the anode net to avoid short circuits while enabling thermal conduction.

What is the recommended PCB footprint for optimal thermal performance?

Use the official Nexperia SOT89 outline (SOT89-3) with ≥25 mm² copper area connected directly to the thermal pad, 2–4 thermal vias (0.3 mm diameter) to inner ground plane, and minimum 0.5 mm solder mask opening around the pad to maximize solder wetting and thermal transfer.

BZV49-C27,115 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: TO-243AA

Packaging:: Tape & Reel (TR)

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 27 V

Tolerance:: ±5%

Power - Max:: 1 W

Impedance (Max) (Zzt):: 80 Ohms

Current - Reverse Leakage @ Vr:: 50 nA @ 18.9 V

Voltage - Forward (Vf) (Max) @ If:: 1 V @ 50 mA

Operating Temperature:: -65°C ~ 150°C

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-89

BZV49-C27,115 FAQ

1.How can I place an order for BZV49-C27,115 through Aetrix?

Please submit a Request for Quotation (RFQ) for BZV49-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 BZV49-C27,115 reliable?

The price and inventory of BZV49-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 BZV49-C27,115 is usually 5 days.

3.What payment methods are accepted for BZV49-C27,115?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZV49-C27,115 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZV49-C27,115?

BZV49-C27,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZV49-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 BZV49-C27,115?

For technical support, including BZV49-C27,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZV49-C27,115 requirements.

6.How does Aetrix verify that BZV49-C27,115 is sourced from the original manufacturer or authorized distributors?

All BZV49-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 BZV49-C27,115 meets industry standards.

7.What is the process for return or replacement of BZV49-C27,115?

All BZV49-C27,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZV49-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 BZV49-C27,115 part is unused and in its original packaging.

Return procedure for BZV49-C27,115:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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