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Nexperia USA Inc. BCM847BS-QX
- Part No.:
- BCM847BS-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Bipolar Transistor Arrays
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
BCM847BS-QX.pdf
- Description:
- TRANS 2NPN 45V 100MA 6-TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:5,661
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Product details
Overview
BCM847BS-QX from Nexperia is an AEC-Q101-qualified NPN/NPN matched double transistor in SOT363-3 (SC-88) package, featuring hFE matching ratio ≥0.9, VBE matching ≤2 mV, and 45 V VCEO per transistor. It serves as a precision current mirror or differential pair in automotive signal conditioning circuits.
For engineers reviewing the BCM847BS-QX datasheet, BCM847BS-QX pinout, BCM847BS-QX application, or BCM847BS-QX equivalent, this page delivers verified matching specs, thermal derating data, TSSOP6 layout guidance, and automotive-grade reliability context - all critical for analog front-end design validation.
Technical Context
This dual NPN device integrates two fully isolated transistors on a single die with tightly controlled hFE (200–450) and VBE (610–710 mV at IC = 2 mA) across temperature. Matching tolerances are defined by ratio-based hFE1/hFE2 ≥0.9 and absolute ΔVBE ≤2 mV at 25 °C.
It operates within −65 °C to +150 °C ambient range, supports reflow-only soldering, and delivers 100 MHz fT at IC = 10 mA. Thermal resistance is 416 K/W per device (junction-to-ambient, FR4 PCB), enabling stable biasing in space-constrained automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - Maximum collector-emitter voltage before breakdown; sets safe operating range for 12 V/24 V automotive rail interfaces. |
| hFE matching | ≥0.9 - Ratio of smaller/larger DC current gain ensures <11% gain mismatch between transistors, critical for accurate current mirroring. |
| ΔVBE | ≤2 mV - Base-emitter voltage difference at 2 mA bias enables sub-0.1% error in differential amplifier common-mode rejection. |
| Ptot (device) | 300 mW - Total power dissipation limit at 25 °C ambient; defines maximum combined bias power before thermal derating applies. |
| fT | 100–250 MHz - Transition frequency at IC = 10 mA; supports high-frequency analog signal paths up to ~50 MHz small-signal bandwidth. |
| Rth(j-a) | 416 K/W - Junction-to-ambient thermal resistance on FR4 PCB; determines temperature rise of 125 K per 300 mW dissipation. |
| AEC-Q101 | Qualified - Validated for automotive use per stress test standard; includes HTOL, TC, HAST, and ESD testing per JEDEC JESD47. |
Pinout & Package
SOT363-3 (SC-88/TSSOP6) plastic surface-mount package with 0.65 mm lead pitch, 2.2 mm × 1.35 mm body, and exposed pad not present. Designed for reflow soldering only; wave soldering requires specific footprint (Fig. 13).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | E1 | Emitter of Transistor 1 - Connected to low-side reference node in current mirror or differential pair tail current path. |
| 2 | B1 | Base of Transistor 1 - Bias input for active load or input transistor in matched-pair configurations. |
| 3 | C2 | Collector of Transistor 2 - Output node for mirrored current or differential output leg. |
| 4 | E2 | Emitter of Transistor 2 - Shared emitter node with E1 in differential pair; tied to current source in mirror topology. |
| 5 | B2 | Base of Transistor 2 - Input node for second leg of differential pair or feedback control in active mirror. |
| 6 | C1 | Collector of Transistor 1 - Primary output node for current mirror reference leg or first differential output. |
Key Features
| Feature | Design Value |
|---|---|
| Current gain matching | hFE1/hFE2 ≥ 0.9 - Enables <11% current error in mirror applications without trimming resistors. |
| Base-emitter voltage matching | ΔVBE ≤ 2 mV at 2 mA - Supports >60 dB CMRR in discrete differential amplifiers at room temperature. |
| AEC-Q101 qualification | Validated for automotive underhood environments - Ensures reliability over 15-year service life in engine control units and ADAS sensors. |
| Drop-in replacement | Pin- and footprint-compatible with BC847BS and BCM857BS (PNP complement) - Reduces redesign effort in legacy analog layouts. |
Applications
| Current Mirror | Differential Amplifier |
|---|---|
|
Use Scenario: Precision bias current generation for op-amp input stages in automotive sensor signal conditioners. IC Role / Device Role / Timing Role: Dual-transistor current mirror providing matched reference and output legs with minimal thermal drift. Use Value: Achieves <0.5% current error over −40 °C to +125 °C due to monolithic matching and low ΔVBE. |
Use Scenario: Front-end amplification of thermocouple or strain gauge signals in battery management systems. IC Role / Device Role / Timing Role: Matched NPN pair forming the core differential input stage with shared emitter degeneration. Use Value: Delivers >55 dB common-mode rejection at 1 kHz without external trimming, enabled by hFE and VBE matching. |
| Automotive Voltage Reference | LED Driver Current Control |
|
Use Scenario: Stable bandgap-independent reference current source in LIN transceivers and CAN node regulators. IC Role / Device Role / Timing Role: Paired transistors configured as Widlar or Wilson mirror to generate temperature-compensated bias currents. Use Value: Maintains ±2% reference current stability across automotive temperature range, leveraging matched VBE temperature coefficients. |
Use Scenario: Constant-current sink for RGB LED clusters in instrument cluster backlighting and HUD illumination. IC Role / Device Role / Timing Role: One transistor acts as sensing element, the other as regulated current pass device in feedback loop. Use Value: Enables <3% LED brightness variation across 1000:1 dimming range via matched hFE-based current regulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar matched NPN transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BC847BS | Unmatched version; no hFE or VBE matching specification; same pinout and basic ratings. | Lacks current mirror accuracy and differential amplifier CMRR; suitable only for non-critical biasing. | Select when matching tolerance >20% is acceptable and cost sensitivity outweighs performance requirements. |
| BCM857BS | PNP/PNP matched pair; identical matching specs (hFE ratio ≥0.9, ΔVBE ≤2 mV) and package. | Used in complementary mirror topologies or PNP-input differential pairs; not interchangeable in NPN-only circuits. | Choose for complementary designs requiring matched PNP behavior alongside BCM847BS in push-pull or Class AB stages. |
Compared with BC847BS, BCM847BS-QX adds guaranteed matching for precision analog functions; compared with BCM857BS, it provides NPN polarity essential for high-side current sensing and NPN-input amplifier topologies.
Availability
BCM847BS-QX is available at Aetrix Electronics and suitable for automotive sensor interfaces, battery management analog front-ends, and ADAS signal conditioning requiring stable component supply and AEC-Q101 compliance.
Supply support for BCM847BS-QX 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.
BCM847BS-QX belongs to Nexperia's AEC-Q101-qualified matched transistor product line, engineered specifically for precision analog functions in harsh-environment automotive electronics.
FAQ
Is BCM847BS-QX pin-compatible with BC847BS?
Yes - BCM847BS-QX uses the identical SOT363-3 package and pin assignment (E1-B1-C2-E2-B2-C1) as BC847BS. No PCB layout changes are required for drop-in replacement where matching performance is needed.
What is the maximum continuous collector current per transistor?
The maximum continuous collector current per transistor is 100 mA, as specified in the Absolute Maximum Ratings table. Derating begins above 25 °C ambient per the Rth(j-a) = 416 K/W thermal resistance value.
Does BCM847BS-QX support wave soldering?
No - Nexperia explicitly states reflow soldering is the only recommended method. Wave soldering is possible only with the dedicated footprint shown in Figure 13 and requires strict process validation; standard wave profiles risk thermal damage.
How is hFE matching defined for BCM847BS-QX?
hFE matching is defined as the ratio of the smaller hFE value to the larger hFE value (hFE1/hFE2 or hFE2/hFE1), with minimum 0.9. This ensures no more than 11% relative gain difference between the two transistors at VCE = 5 V and IC = 2 mA.
BCM847BS-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- 2 NPN
- Current - Collector (Ic) (Max):
- 100mA
- Voltage - Collector Emitter Breakdown (Max):
- 45V
- Vce Saturation (Max) @ Ib, Ic:
- 400mV @ 5mA, 100mA
- Current - Collector Cutoff (Max):
- 15nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 200 @ 2mA, 5V
- Power - Max:
- 200mW
- Frequency - Transition:
- 250MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-TSSOP
BCM847BS-QX FAQ
1.How can I place an order for BCM847BS-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BCM847BS-QX 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 BCM847BS-QX reliable?
The price and inventory of BCM847BS-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCM847BS-QX is usually 5 days.
3.What payment methods are accepted for BCM847BS-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCM847BS-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCM847BS-QX?
BCM847BS-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCM847BS-QX 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 BCM847BS-QX?
For technical support, including BCM847BS-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCM847BS-QX requirements.
6.How does Aetrix verify that BCM847BS-QX is sourced from the original manufacturer or authorized distributors?
All BCM847BS-QX 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 BCM847BS-QX meets industry standards.
7.What is the process for return or replacement of BCM847BS-QX?
All BCM847BS-QX units undergo pre-shipment inspection (PSI). If there is an issue with BCM847BS-QX, 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 BCM847BS-QX part is unused and in its original packaging.
Return procedure for BCM847BS-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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