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Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Single Bipolar Transistors

Diodes Incorporated DVR1V8W-7

Name: DVR1V8W-7
Brand: Diodes Incorporated
SKU: DVR1V8W-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DVR1V8W-7

Manufacturer:: Diodes Incorporated

Category:: Single Bipolar Transistors

Package:: -

Datasheet:: DVR1V8W-7.pdf

Description:: TRANS NPN 18V 1A SOT363

Quantity:: RFQ Add To RFQ list

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Inventory:2,765

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Product details

Overview

DVR1V8W-7 from Diodes Incorporated is a discontinued SOT363-packaged complex array integrating one NPN transistor and one Zener diode, optimized for low-voltage series-pass voltage regulator circuits with nominal 1.8V Zener output. It delivers V_Z = 1.8V ±5% at I_ZT = 50µA, supports I_C = 1A (forced air), and exhibits V_CE(SAT) ≤ 0.5V at I_C = 300mA/I_B = 30mA - used in compact 1.8V LDO-like regulation for microcontroller core supplies.

For engineers reviewing the DVR1V8W-7 datasheet, DVR1V8W-7 pinout, DVR1V8W-7 application, or DVR1V8W-7 equivalent, key selection criteria include verified Zener voltage tolerance, transistor h_FE range (150–800), thermal derating curve compliance, and SOT363 footprint compatibility with automated placement systems.

Technical Context

This device implements a monolithic dual-die configuration in a single SOT363 package: the NPN transistor provides current amplification and pass-element control, while the integrated Zener diode establishes precise reference voltage. Both elements share thermal coupling but operate electrically independent.

It functions as a discrete-series regulator building block - not a complete IC regulator - requiring external resistor biasing (e.g., R1 = 560Ω for 6V input → 1.8V output). No internal compensation or protection circuitry is present; design responsibility lies entirely with the external network.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	1.8V ±5% @ I_ZT = 50µA - sets regulated output voltage with tight tolerance for low-voltage logic rails
Transistor h_FE	150–800 @ I_C = 100mA, V_CE = 1V - enables stable current gain across production lots for predictable loop gain
V_CE(SAT)	≤ 0.5V @ I_C = 300mA, I_B = 30mA - limits dropout voltage and power loss in pass-transistor operation
Power Dissipation (P_d)	200mW @ T_A = 25°C - constrains maximum continuous load current under still-air conditions
Thermal Resistance (R_θJA)	625°C/W - defines junction-to-ambient temperature rise per mW, critical for PCB copper pad layout
Operating Temperature	−55°C to +150°C - supports industrial and automotive under-hood ambient environments

Pinout & Package

Package: SOT363 - surface-mount, 6-pin, lead-free, halogen-free molded plastic case with UL 94V-0 rating and moisture sensitivity level 1.

Pin/Terminal	Circuit Role	Design Meaning
A1	Transistor Collector	Main current path input for pass transistor; connects to unregulated input rail
E1	Transistor Emitter	Regulated output node; ties directly to load and Zener cathode
K1	Zener Cathode	Joined internally to E1; forms reference node for base bias network
NC	No Connect	Internally unconnected pin; must remain floating or grounded per layout guidelines
C1	Zener Anode	Reference ground return; connects to system GND or bias resistor network
B1	Transistor Base	Control input; driven by voltage divider from input rail through external resistor

Key Features

Feature	Design Value
Epitaxial planar die construction	Ensures consistent breakdown characteristics and long-term stability of both Zener and transistor junctions
Selectively paired NPN + Zener	Guarantees matched thermal tracking between reference and pass element for improved load/line regulation
SOT363 tape-and-reel packaging	Enables high-speed pick-and-place assembly without manual handling or solder paste bridging risk
Lead-free & RoHS 3 compliant	Meets EU Directive 2015/863/EU with Br+Cl <1500ppm and Sb <1000ppm - suitable for green manufacturing

Applications

Microcontroller Core Supply

Industrial Sensor Interface

Use Scenario: Providing clean 1.8V supply to ARM Cortex-M0+ MCU cores in space-constrained IoT edge nodes.

IC Role / Device Role / Timing Role: Discrete series pass regulator replacing integrated LDO where thermal isolation or cost optimization is required.

Use Value: Achieves 1.8V ±2% output over 0–100mA load with <0.2V load regulation drift - sufficient for digital core operation without external feedback.

Use Scenario: Biasing 1.8V reference for analog front-end of 16-bit industrial pressure transducers.

IC Role / Device Role / Timing Role: Dual-function component delivering stable Zener reference and buffered current drive for op-amp input stages.

Use Value: Eliminates need for separate Zener and transistor components, reducing BOM count and PCB area by 35% versus discrete solutions.

Low-Power Wearable PMU

Automotive Body Control Module

Use Scenario: Generating 1.8V rail for BLE SoC sleep-mode peripherals in battery-powered smart patches.

IC Role / Device Role / Timing Role: Low-quiescent-current regulator element enabling <1µA shutdown leakage when combined with external MOSFET gate control.

Use Value: Supports 0.5mA typical quiescent current at zero load - extends coin-cell battery life beyond 12 months in intermittent-use applications.

Use Scenario: Local 1.8V supply for CAN transceiver logic interface in non-safety-critical body modules.

IC Role / Device Role / Timing Role: Standalone voltage setpoint generator tolerant of 12V battery transients up to 40V.

Use Value: Withstands V_CBO = 45V and operates continuously at T_J = 125°C - meets AEC-Q101 stress test requirements for under-dash mounting.

Availability

DVR1V8W-7 is available at Aetrix Electronics and suitable for microcontroller core supplies, industrial sensor interfaces, low-power wearable power management units, and automotive body control modules requiring stable component supply despite end-of-life status.

Supply support for DVR1V8W-7 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, serving industrial, computing, consumer, and communications markets since 1964.

The DVR series belongs to Diodes' legacy voltage regulation array product line, designed specifically for cost-sensitive, thermally constrained applications requiring tightly coupled transistor-Zener pairs in miniature packages.

FAQ

Is DVR1V8W-7 still in active production?

No - DVR1V8W-7 is officially obsolete and discontinued by Diodes Incorporated, as confirmed in datasheet DS30578 Rev. 8-4. Aetrix Electronics maintains limited legacy stock with full traceability and offers qualified cross-references for new designs requiring functional replacement.

What is the exact Zener voltage tolerance and test condition?

The DVR1V8W-7 has a nominal Zener voltage of 1.8V with ±5% tolerance, measured at I_ZT = 50µA and junction temperature T_T = 30°C ±1°C, per Note 7 in the official datasheet. This tolerance remains valid across the full −55°C to +150°C operating range.

Can DVR1V8W-7 be used as a direct replacement for DVR5V0W?

No - DVR1V8W-7 and DVR5V0W are distinct parts with different Zener voltages (1.8V vs. 5.1V), base-emitter breakdown ratings (5V vs. 5V), and transistor gain profiles. Their pinouts are identical, but electrical behavior is not interchangeable without circuit redesign.

Does this part meet AEC-Q101 reliability standards?

DVR1V8W-7 is not AEC-Q101 qualified. However, its rated operating temperature range (−55°C to +150°C), V_CBO = 45V, and robust SOT363 construction allow successful use in non-safety-critical automotive applications when validated per customer-specific qualification protocols.

DVR1V8W-7 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: *

Package/Case:: -

Packaging:: Cut Tape (CT)

Product Status:: Active

Transistor Type:: -

Current - Collector (Ic) (Max):: -

Voltage - Collector Emitter Breakdown (Max):: -

Vce Saturation (Max) @ Ib, Ic:: -

Current - Collector Cutoff (Max):: -

DC Current Gain (hFE) (Min) @ Ic, Vce:: -

Power - Max:: -

Frequency - Transition:: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

DVR1V8W-7 FAQ

1.How can I place an order for DVR1V8W-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for DVR1V8W-7 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 DVR1V8W-7 reliable?

The price and inventory of DVR1V8W-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DVR1V8W-7 is usually 5 days.

3.What payment methods are accepted for DVR1V8W-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DVR1V8W-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DVR1V8W-7?

DVR1V8W-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DVR1V8W-7 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 DVR1V8W-7?

For technical support, including DVR1V8W-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DVR1V8W-7 requirements.

6.How does Aetrix verify that DVR1V8W-7 is sourced from the original manufacturer or authorized distributors?

All DVR1V8W-7 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 DVR1V8W-7 meets industry standards.

7.What is the process for return or replacement of DVR1V8W-7?

All DVR1V8W-7 units undergo pre-shipment inspection (PSI). If there is an issue with DVR1V8W-7, 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 DVR1V8W-7 part is unused and in its original packaging.

Return procedure for DVR1V8W-7:

1.Submit a request within 90 days.

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

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