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

onsemi NSS20201DMTTBG

Name: NSS20201DMTTBG
Brand: onsemi
SKU: NSS20201DMTTBG
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: NSS20201DMTTBG

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: 6-WDFN Exposed Pad

Datasheet:: NSS20201DMTTBG.pdf

Description:: TRANS PNP 20V 2A 6WDFN

Quantity:: RFQ Add To RFQ list

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Product details

Overview

NSS20201DMTTBG from onsemi is a dual NPN low V_CE(sat) transistor in a WDFN6 package, rated for 20 V V_CEO, 2 A continuous collector current, and featuring ultra-low saturation voltage (0.100 V at I_C = 500 mA / I_B = 50 mA). It delivers high DC current gain (h_FE = 250 min at I_C = 100 mA) and 180 MHz f_T, optimized for high-efficiency DC–DC converters and automotive instrument cluster switching.

For engineers reviewing the NSS20201DMTTBG datasheet, pinout, applications, or equivalent options, key selection criteria include verified dual-transistor thermal derating (1.8 W per transistor), wettable flanks compatibility for automated optical inspection, and AEC−Q101 qualification for automotive deployment circuits.

Technical Context

This device integrates two matched NPN transistors in a single 2 mm × 2 mm WDFN6 package with exposed thermal pad. Each transistor supports independent operation with separate base, emitter, and collector terminals-no shared internal nodes. The dual configuration enables synchronous switching or complementary drive without cross-coupling.

It operates under strict automotive-grade reliability constraints: junction temperature range −55 °C to +150 °C, Pb-free/halogen-free construction, and validated performance across temperature extremes (−55 °C to +150 °C) with stable h_FE and V_CE(sat) behavior per Figure 1–6 of the datasheet.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	20 V - Maximum safe collector-emitter voltage before breakdown; sets upper limit for switch-node voltage in 12 V automotive systems.
I_C (continuous)	2 A - Sustained current-handling capability per transistor; supports 2 A load switching without forced cooling in PCB layouts with 100 mm² copper pad.
V_CE(sat)	0.100 V @ I_C=500 mA/I_B=50 mA - Ultra-low saturation loss reduces conduction power dissipation to ≤50 mW at mid-load, critical for thermally constrained modules.
h_FE	250 min @ I_C=100 mA - High DC current gain enables direct drive from low-current PMU outputs (e.g., 5 mA GPIO), eliminating base-resistor networks.
f_T	180 MHz - Sufficient bandwidth for PWM switching up to ~10 MHz with controlled rise/fall times (t_r = 18 ns, t_f = 80 ns).
R_JA (single)	69 °C/W - Thermal resistance under JESD51-7 single-transistor test condition; used to calculate max ambient temperature for 1.8 W operation.
P_D (per transistor)	1.8 W @ T_A = 25 °C - Power dissipation limit when only one transistor is active; defines safe operating area with derating above 25 °C.

Pinout & Package

Package: WDFN6 (Case 506AN), 2 mm × 2 mm, 0.65 mm pitch, exposed thermal pad (pin 6), RoHS-compliant, wettable flanks enabled.

Pin/Terminal	Circuit Role	Design Meaning
1	Base 1	Control input for first NPN transistor; requires ≥0.9 V V_BE(on) to initiate conduction.
2	Emitter 1	Current return path for transistor 1; internally connected to exposed thermal pad for enhanced heat transfer.
3	Collector 1	High-side switched output for transistor 1; rated for 20 V and 2 A continuous.
4	Collector 2	High-side switched output for transistor 2; electrically isolated from Collector 1; supports independent load control.
5	Emitter 2	Current return path for transistor 2; tied to same thermal pad as Emitter 1 for shared thermal management.
6	Base 2	Control input for second NPN transistor; identical V_BE(sat) and h_FE characteristics as Base 1.

Key Features

Feature	Design Value
AEC−Q101 qualified	Validated for automotive applications including airbag deployment and instrument clusters; includes PPAP documentation support.
Wettable flanks	Side-wettable leads enable automated solder-joint inspection (AOI) without X-ray, improving manufacturing yield in automotive SMT lines.
Ultra-low V_CE(sat)	0.100 V typical at I_C/I_B = 10:1 ensures <100 mW conduction loss at 1 A, reducing thermal stress in compact DC–DC modules.
Dual independent transistors	Two fully isolated NPN devices in one footprint eliminate board space for discrete pairs while maintaining signal integrity between channels.
High h_FE linearity	h_FE remains ≥100 at I_C = 2 A (IC/IB = 10), enabling predictable analog amplifier biasing and stable digital switching thresholds.

Applications

Automotive Instrument Cluster	DC–DC Converter Switching
Use Scenario: Driving LED backlight arrays and stepper motor drivers in vehicle dashboards with 12 V supply rails. IC Role / Device Role / Timing Role: Dual NPN switch controlling parallel LED strings and motor phase currents with synchronized PWM inputs. Use Value: Low V_CE(sat) minimizes heat generation in sealed cluster housings; AEC−Q101 qualification ensures functional safety compliance.	Use Scenario: High-frequency synchronous rectification in buck converter output stages operating at 500 kHz–2 MHz. IC Role / Device Role / Timing Role: Low-loss switching element replacing Schottky diodes; driven by gate driver with 50 mA peak base current. Use Value: 0.100 V V_CE(sat) cuts conduction loss by >60% vs. standard bipolar transistors, improving efficiency in 5–12 V output designs.
LED Lighting Driver	Automotive Airbag Control
Use Scenario: Constant-current dimming of high-brightness LEDs in interior lighting modules with PWM modulation. IC Role / Device Role / Timing Role: Current-switching transistor modulating LED current at 1–10 kHz; operated in linear region for analog dimming or saturated for PWM. Use Value: Linear gain (Beta) stability across temperature allows precise analog current regulation without feedback compensation.	Use Scenario: Triggering squib detonators and diagnostic monitoring circuits in airbag control units during crash events. IC Role / Device Role / Timing Role: Fast-turn-on switch delivering 2 A pulse within <13 ns delay time to initiate pyrotechnic charge ignition. Use Value: 13 ns t_d and 18 ns t_r ensure sub-100 ns total switching window, meeting ASAM-12 timing requirements for occupant protection.

Automotive Instrument Cluster

DC–DC Converter Switching

Use Scenario: Driving LED backlight arrays and stepper motor drivers in vehicle dashboards with 12 V supply rails.

IC Role / Device Role / Timing Role: Dual NPN switch controlling parallel LED strings and motor phase currents with synchronized PWM inputs.

Use Value: Low V_CE(sat) minimizes heat generation in sealed cluster housings; AEC−Q101 qualification ensures functional safety compliance.

Use Scenario: High-frequency synchronous rectification in buck converter output stages operating at 500 kHz–2 MHz.

IC Role / Device Role / Timing Role: Low-loss switching element replacing Schottky diodes; driven by gate driver with 50 mA peak base current.

Use Value: 0.100 V V_CE(sat) cuts conduction loss by >60% vs. standard bipolar transistors, improving efficiency in 5–12 V output designs.

LED Lighting Driver

Automotive Airbag Control

Use Scenario: Constant-current dimming of high-brightness LEDs in interior lighting modules with PWM modulation.

IC Role / Device Role / Timing Role: Current-switching transistor modulating LED current at 1–10 kHz; operated in linear region for analog dimming or saturated for PWM.

Use Value: Linear gain (Beta) stability across temperature allows precise analog current regulation without feedback compensation.

Use Scenario: Triggering squib detonators and diagnostic monitoring circuits in airbag control units during crash events.

IC Role / Device Role / Timing Role: Fast-turn-on switch delivering 2 A pulse within <13 ns delay time to initiate pyrotechnic charge ignition.

Use Value: 13 ns t_d and 18 ns t_r ensure sub-100 ns total switching window, meeting ASAM-12 timing requirements for occupant protection.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN switching applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
NSV20201DMTWTBG	Identical electrical specs and package; differs only in marking (NSV prefix denotes AEC−Q101 + PPAP-capable variant with unique site controls).	Required for Tier-1 automotive programs mandating NSV traceability and change control; same use cases as NSS20201DMTTBG.	Select NSV20201DMTWTBG when full PPAP documentation and automotive-specific quality gate requirements apply.
ZXTN2020FDE6TA	Single NPN in SOT-26; 20 V/2 A rating but higher V_CE(sat) (0.25 V typ), lower f_T (150 MHz), no AEC−Q101 qualification.	Suitable for industrial DC–DC or LED drivers where automotive qualification is not required; lacks dual-transistor integration.	Choose ZXTN2020FDE6TA only for cost-sensitive non-automotive designs accepting higher losses and larger board area.

Compared with NSS20201DMTTBG, NSV20201DMTWTBG adds mandatory automotive traceability without electrical trade-offs, while ZXTN2020FDE6TA offers lower unit cost at the expense of thermal performance, frequency response, and automotive compliance-making NSS20201DMTTBG optimal for space-constrained, safety-critical dual-switching roles.

Availability

NSS20201DMTTBG is available at Aetrix Electronics and suitable for automotive instrument clusters, DC–DC converter modules, and LED lighting drivers requiring stable component supply, AEC−Q101 validation, and wettable flanks manufacturability.

Supply support for NSS20201DMTTBG 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

onsemi (Semiconductor Components Industries, LLC) is a global semiconductor supplier focused on energy-efficient innovation for automotive, industrial, cloud, and IoT applications.

The e2PowerEdge family-including NSS20201DMTTBG-is engineered specifically for high-efficiency, low-voltage switching in thermally constrained automotive and portable power systems, emphasizing ultra-low V_CE(sat) and AEC−Q101 reliability.

FAQ

What is the maximum continuous collector current rating for NSS20201DMTTBG?

The NSS20201DMTTBG is rated for 2 A continuous collector current per transistor at T_A = 25 °C with a 100 mm² copper pad. Derating applies above 25 °C per the 69 °C/W R_JA curve in Figure 14; at 70 °C ambient, max I_C drops to approximately 1.4 A per transistor to maintain T_J ≤ 150 °C.

Does NSS20201DMTTBG support automotive qualification standards?

Yes, NSS20201DMTTBG is AEC−Q101 qualified and PPAP capable. Its qualification covers temperature cycling, humidity testing, mechanical shock, and lifetime reliability under automotive stress conditions-enabling use in instrument clusters, airbag controllers, and body electronics per ISO/TS 16949 requirements.

What is the purpose of the exposed thermal pad on the NSS20201DMTTBG WDFN6 package?

The exposed thermal pad (pin 6) on the NSS20201DMTTBG serves as the primary heat dissipation path, directly connecting both emitters to the PCB ground plane. When soldered to a ≥100 mm² 2 oz. copper pad, it achieves 69 °C/W R_JA (single transistor), enabling 1.8 W power handling without external heatsinks in compact automotive modules.

How does the dual-transistor configuration of NSS20201DMTTBG improve board-level design?

The dual-transistor configuration of NSS20201DMTTBG replaces two discrete SOT-23 transistors in 40% less board area, eliminates layout mismatch between channels, and ensures matched h_FE and V_CE(sat) across temperature-critical for balanced current sharing in LED drivers and synchronous rectifiers where channel-to-channel variation must be <5%.

What is the minimum base-emitter turn-on voltage (V_BE(on)) for NSS20201DMTTBG?

The minimum base-emitter turn-on voltage V_BE(on) for NSS20201DMTTBG is 0.9 V at I_C = 500 mA and V_CE = 2 V (Table 1). This low threshold enables reliable switching from 1.8 V and 3.3 V logic sources without level-shifting, supporting direct interface with low-voltage PMUs and microcontrollers.

NSS20201DMTTBG Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: 6-WDFN Exposed Pad

Packaging:: Tape & Reel (TR)

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:: Surface Mount

Supplier Device Package:: 6-WDFN (2x2)

NSS20201DMTTBG FAQ

1.How can I place an order for NSS20201DMTTBG through Aetrix?

Please submit a Request for Quotation (RFQ) for NSS20201DMTTBG 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 NSS20201DMTTBG reliable?

The price and inventory of NSS20201DMTTBG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NSS20201DMTTBG is usually 5 days.

3.What payment methods are accepted for NSS20201DMTTBG?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NSS20201DMTTBG transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for NSS20201DMTTBG?

NSS20201DMTTBG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NSS20201DMTTBG 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 NSS20201DMTTBG?

For technical support, including NSS20201DMTTBG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NSS20201DMTTBG requirements.

6.How does Aetrix verify that NSS20201DMTTBG is sourced from the original manufacturer or authorized distributors?

All NSS20201DMTTBG 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 NSS20201DMTTBG meets industry standards.

7.What is the process for return or replacement of NSS20201DMTTBG?

All NSS20201DMTTBG units undergo pre-shipment inspection (PSI). If there is an issue with NSS20201DMTTBG, 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 NSS20201DMTTBG part is unused and in its original packaging.

Return procedure for NSS20201DMTTBG:

1.Submit a request within 90 days.

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

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