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

Infineon Technologies BCX6816H6327XTSA1

Name: BCX6816H6327XTSA1
Brand: Infineon Technologies
SKU: BCX6816H6327XTSA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BCX6816H6327XTSA1

Manufacturer:: Infineon Technologies

Category:: Single Bipolar Transistors

Package:: TO-243AA

Datasheet:: BCX6816H6327XTSA1.pdf

Description:: TRANS NPN 20V 1A PG-SOT89

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BCX6816H6327XTSA1 from Infineon Technologies is an NPN silicon bipolar junction transistor designed for general-purpose audio-frequency amplification and switching. It delivers 1 A continuous collector current, 160–250 DC current gain (h_FE) at IC = 500 mA / V_CE = 1 V, and low 0.5 V collector-emitter saturation voltage under full load. It is used in automotive body control modules for relay driver stages.

For engineers reviewing the BCX6816H6327XTSA1 datasheet, BCX6816H6327XTSA1 pinout, BCX6816H6327XTSA1 application, or BCX6816H6327XTSA1 equivalent, key selection criteria include V_CEO = 20 V, I_C = 1 A, h_FE range (160–250), V_CE(sat) ≤ 0.5 V at I_C = 1 A / I_B = 100 mA, and SOT89 thermal resistance R_thJS ≤ 12 K/W.

Technical Context

This transistor operates as a medium-power NPN switch or linear amplifier with fixed-emitter biasing capability. Its 20 V V_CEO, 25 V V_CBO, and 5 V V_EBO ratings support 12 V automotive rail operation with margin. The device exhibits f_T = 100 MHz (typ.) at I_C = 100 mA / V_CE = 5 V, enabling stable performance up to mid-audio frequencies.

Thermal design relies on its SOT89 package's low R_thJS ≤ 12 K/W and P_tot = 3 W at T_S ≤ 114 °C. Junction temperature is rated to 150 °C, supporting under-hood deployment when mounted on thermally optimized PCB copper areas.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	20 V - Maximum safe collector-emitter voltage before breakdown in common-emitter configuration
I_C	1 A - Continuous DC collector current rating at T_S ≤ 114 °C
h_FE	160–250 - DC current gain at I_C = 500 mA, V_CE = 1 V, defining base drive sizing for saturated switching
V_CE(sat)	≤ 0.5 V - Voltage drop across C–E terminals when fully saturated at I_C = 1 A / I_B = 100 mA
f_T	100 MHz (typ.) - Transition frequency indicating usable bandwidth for small-signal amplification
R_thJS	≤ 12 K/W - Thermal resistance from junction to soldering point, critical for heatsink-less PCB thermal design
P_tot	3 W - Total power dissipation limit at case temperature ≤ 114 °C

Pinout & Package

The BCX6816H6327XTSA1 is housed in a surface-mount SOT89 package with three leads: emitter (pin 3), base (pin 1), and collector (pin 2). The package features a large exposed collector tab for thermal conduction and mechanical anchoring.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Control input terminal; requires ~100 mA peak drive for full saturation at 1 A collector load
2	Collector	Main power output terminal; electrically and thermally connected to exposed metal tab
3	Emitter	Reference/return path; typically tied to ground or low-side return in switching configurations

Key Features

Feature	Design Value
AEC-Q101 qualified	Qualified for automotive applications per stress test standard, including temperature cycling and HTRB
RoHS-compliant packaging	Lead-free SOT89 construction meeting EU Directive 2011/65/EU requirements
Complementary PNP pair	BCX69 series provides matched PNP counterpart for push-pull or H-bridge topologies
Low V_CE(sat)	≤ 0.5 V at full 1 A load reduces conduction loss and self-heating in high-duty-cycle drivers

Applications

Automotive Relay Driver

DC Motor Speed Control

Use Scenario: Driving 12 V automotive relays (e.g., headlight, fan, fuel pump) from microcontroller GPIO pins via discrete BJT stage.

IC Role / Device Role / Timing Role: NPN switch providing current gain and isolation between low-current MCU output and inductive relay coil.

Use Value: 1 A I_C rating and ≤0.5 V V_CE(sat) ensure reliable coil energization with <500 mW dissipation at full load.

Use Scenario: PWM-controlled speed regulation of brushed 12 V DC motors in HVAC actuators or seat adjusters.

IC Role / Device Role / Timing Role: Low-side switching element handling bidirectional current pulses during PWM commutation.

Use Value: 150 °C T_j rating and 3 W P_tot allow sustained 1 A pulsed operation without external heatsinking on 2 oz copper PCBs.

LED Load Switch

Power Supply Enable Stage

Use Scenario: Enabling high-brightness LED arrays (e.g., interior lighting, status indicators) in vehicle cabins.

IC Role / Device Role / Timing Role: Constant-current or switched-current driver operating in linear or saturated mode.

Use Value: Tight h_FE spread (160–250) enables predictable base resistor selection for consistent LED brightness across production units.

Use Scenario: Controlling enable/disable sequencing of secondary DC-DC converters in multi-rail automotive ECUs.

IC Role / Device Role / Timing Role: High-current pass transistor activated by system controller to assert power-good signals or gate downstream rails.

Use Value: 20 V V_CEO and 25 V V_CBO provide sufficient margin against load-dump transients (ISO 7637-2 Pulse 5a).

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BCX68-16,115 (Nexperia)	Same SOT89 package, identical V_CEO/I_C/h_FE specs, but not AEC-Q101 qualified	Limited to non-automotive industrial use due to qualification gap	Select when automotive qualification is unnecessary and cost sensitivity is higher
MJD127G (ON Semiconductor)	TO-252 package, higher V_CEO = 60 V, lower h_FE = 30–120, P_tot = 15 W	Used where higher voltage margin or higher power dissipation is required	Choose only if >20 V blocking or >3 W thermal budget is needed; larger footprint required

Compared with BCX6816H6327XTSA1, BCX68-16,115 offers identical electrical performance without automotive qualification, while MJD127G trades compact SOT89 size for higher voltage and power capability at the cost of gain consistency and board area.

Availability

BCX6816H6327XTSA1 is available at Aetrix Electronics and suitable for automotive body electronics, industrial motor control, LED lighting systems, and power supply sequencing requiring stable component supply and AEC-Q101 compliance.

Supply support for BCX6816H6327XTSA1 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

Infineon Technologies AG is a German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs and discrete devices.

The BCX68 family belongs to Infineon's automotive-qualified bipolar transistor product line, engineered specifically for robust, high-reliability switching in 12 V vehicle subsystems.

FAQ

What is the maximum allowable base current for continuous operation?

The absolute maximum rated base current (I_B) is 100 mA DC. Exceeding this value risks metallization failure or bond wire overheating. For reliable 1 A collector switching, design base drive to deliver 100 mA peak with ≤50% duty cycle and adequate thermal relief on the PCB.

Does BCX6816H6327XTSA1 support pulse operation beyond its DC ratings?

Yes - it supports pulsed collector currents up to 2 A (I_CM) for pulse widths ≤10 ms and duty cycles ≤2%. Permissible pulse load curves in the datasheet confirm safe operation up to 3.5× DC power for short durations, provided average power remains within 3 W limits.

How does the SOT89 package affect thermal performance in PCB layout?

The SOT89's exposed collector tab must be soldered to ≥25 mm² of 2 oz copper pour with ≥4 thermal vias (0.3 mm diameter) to achieve R_thJA ≤ 60 K/W. Without this, junction temperature rise exceeds safe limits at >0.8 A continuous load.

Is BCX6816H6327XTSA1 pin-compatible with BCX68-10 or BCX68-25 variants?

Yes - all BCX68 variants (10, 16, 25) share identical SOT89 pinout (B-C-E), same footprint, and mechanical dimensions. Only h_FE min/max ranges differ; electrical substitution is permissible if gain requirements align with the selected variant's specification.

BCX6816H6327XTSA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: TO-243AA

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 1 A

Voltage - Collector Emitter Breakdown (Max):: 20 V

Vce Saturation (Max) @ Ib, Ic:: 500mV @ 100mA, 1A

Current - Collector Cutoff (Max):: 100nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 100 @ 500mA, 1V

Power - Max:: 3 W

Frequency - Transition:: 100MHz

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: PG-SOT89

BCX6816H6327XTSA1 FAQ

1.How can I place an order for BCX6816H6327XTSA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for BCX6816H6327XTSA1 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 BCX6816H6327XTSA1 reliable?

The price and inventory of BCX6816H6327XTSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCX6816H6327XTSA1 is usually 5 days.

3.What payment methods are accepted for BCX6816H6327XTSA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCX6816H6327XTSA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BCX6816H6327XTSA1?

BCX6816H6327XTSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BCX6816H6327XTSA1 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 BCX6816H6327XTSA1?

For technical support, including BCX6816H6327XTSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCX6816H6327XTSA1 requirements.

6.How does Aetrix verify that BCX6816H6327XTSA1 is sourced from the original manufacturer or authorized distributors?

All BCX6816H6327XTSA1 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 BCX6816H6327XTSA1 meets industry standards.

7.What is the process for return or replacement of BCX6816H6327XTSA1?

All BCX6816H6327XTSA1 units undergo pre-shipment inspection (PSI). If there is an issue with BCX6816H6327XTSA1, 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 BCX6816H6327XTSA1 part is unused and in its original packaging.

Return procedure for BCX6816H6327XTSA1:

1.Submit a request within 90 days.

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

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