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Nexperia USA Inc. BCM846BSHX
- Part No.:
- BCM846BSHX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Bipolar Transistor Arrays
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
BCM846BSHX.pdf
- Description:
- TRANS 2NPN 65V 100MA 6-TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:7,278
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Product details
Overview
BCM846BSHX from Nexperia is a matched dual NPN transistor in SOT363 (TSSOP6) package, designed for precision analog functions requiring tight parameter matching between two transistors. It delivers 65 V VCEO, 100 mA IC, hFE matching ratio of 0.95–1.05, VBE matching ≤2 mV, and operates up to 175 °C junction temperature - enabling use in high-reliability current mirrors and differential amplifiers on compact PCBs.
For engineers reviewing the BCM846BSHX datasheet, BCM846BSHX pinout, BCM846BSHX application, or BCM846BSHX equivalent, this device is selected when matched gain and base-emitter voltage are critical for bias stability, thermal tracking, and low-drift analog signal conditioning in industrial sensor front-ends and power management feedback loops.
Technical Context
This dual NPN transistor integrates two electrically isolated silicon epitaxial planar transistors on a single die with monolithic matching - ensuring identical thermal gradients and process variation across both units. Key design features include low collector capacitance (1.2 pF), low VCE(sat) (200–300 mV at 100 mA), and guaranteed hFE/VBE matching under defined test conditions (VCE = 5 V, IC = 2 mA, Tamb = 25 °C).
No mutual interference exists between TR1 and TR2 due to physical separation and shared substrate isolation. The device supports high-temperature operation (Tj up to 175 °C) and exhibits predictable derating: per-device Ptot drops from 400 mW at 25 °C to zero at 175 °C per FR4 PCB mounting conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 65 V - maximum safe collector-emitter voltage before breakdown; enables use in 48 V industrial bus monitoring |
| IC | 100 mA - continuous collector current per transistor; sufficient for precision biasing and small-signal switching |
| hFE matching | 0.95–1.05 - ensures ≤5% gain mismatch between transistors; critical for stable current mirror ratio accuracy |
| VBE matching | ≤2 mV - guarantees sub-0.3% base-emitter voltage mismatch; minimizes offset in differential pair inputs |
| Ptot (per device) | 400 mW at Tamb ≤25 °C - total dissipation limit for both transistors; defines thermal layout requirements on FR4 |
| Rth(j-a) | 375 K/W - junction-to-ambient thermal resistance per device; determines temperature rise under load |
| fT | 100 MHz - transition frequency at IC = 10 mA; supports audio and low-MHz analog signal paths |
Pinout & Package
SOT363 (TSSOP6) plastic surface-mount package: 6-pin, 0.65 mm pitch, 2.1 mm × 1.25 mm × 0.95 mm body height. Designed for reflow soldering with standard footprint per Figure 12 (sot363_fr).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | E1 | Emitter of Transistor 1 - common reference node for TR1; connects to current sink or bias resistor |
| 2 | B1 | Base of Transistor 1 - control input for TR1; requires current-limited drive to avoid saturation mismatch |
| 3 | C2 | Collector of Transistor 2 - output node for TR2; used as active load or mirrored current source |
| 4 | E2 | Emitter of Transistor 2 - tied to E1 in current mirror configuration; enables matched emitter degeneration |
| 5 | B2 | Base of Transistor 2 - driven by same voltage as B1 in mirror mode; matching ensures identical VBE drop |
| 6 | C1 | Collector of Transistor 1 - primary output for TR1; supplies mirrored current to load or next stage |
Key Features
| Feature | Design Value |
|---|---|
| Monolithic hFE matching | Guaranteed 5% max gain mismatch ensures consistent current transfer ratio in mirror topologies |
| Low VCE(sat) | 200–300 mV at 100 mA enables <100 mW dissipation per transistor in saturated switch applications |
| Thermal tracking | Shared die ensures near-identical ΔT response - critical for drift-canceled differential amplifier DC performance |
| High-temperature rating | 175 °C max junction temperature supports operation in sealed enclosures or near power stages |
| No cross-talk | Electrically isolated collectors/emitters prevent signal coupling between TR1 and TR2 in mixed-signal layouts |
Applications
| Current Mirror | Differential Amplifier |
|---|---|
Use Scenario: Precision current replication in sensor bias networks and DAC output buffers. IC Role / Device Role / Timing Role: Dual NPN acts as active current source/sink pair with matched hFE and VBE to minimize ratio error. Use Value: Achieves <0.5% current mismatch over -40 °C to +125 °C ambient due to monolithic matching and thermal coupling. |
Use Scenario: Input stage of rail-to-rail op-amp or instrumentation amplifier for industrial measurement. IC Role / Device Role / Timing Role: Forms matched emitter-coupled pair providing high CMRR and low input offset drift. Use Value: ≤2 mV VBE mismatch directly limits input offset voltage; enables <10 µV/°C drift without external trimming. |
| Active Load | Temperature-Stable Bias Generator |
Use Scenario: High-impedance active load in discrete amplifier stages for wideband RF or audio preamps. IC Role / Device Role / Timing Role: TR2 configured as constant-current sink while TR1 provides gain; independent control of each transistor. Use Value: Low collector capacitance (1.2 pF) preserves bandwidth >100 MHz; no parasitic coupling between load and gain transistor. |
Use Scenario: Reference current generation for voltage regulators and bandgap circuits in automotive ECUs. IC Role / Device Role / Timing Role: Paired transistors implement PTAT (proportional-to-absolute-temperature) current with matched thermal coefficients. Use Value: Monolithic construction ensures identical TCR; enables ±0.5% current stability from -40 °C to +150 °C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar matched dual transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BCM847BSH | Higher VCEO (80 V), lower IC (100 mA), same SOT363 package and matching specs | Better suited for 60 V bus monitoring; slightly reduced fT (80 MHz) limits high-frequency use | Select when higher breakdown margin is required and gain-bandwidth trade-off is acceptable |
| MBT3904DW1T1G | Lower VCEO (40 V), looser hFE matching (no spec), same 100 mA IC, SOT-363 package | Cost-optimized for non-critical biasing; lacks guaranteed matching or high-temp qualification | Choose only for non-precision applications where thermal drift and ratio accuracy are not design constraints |
Compared with BCM846BSHX, BCM847BSH offers higher voltage headroom but reduced bandwidth, while MBT3904DW1T1G sacrifices matching guarantees and temperature range for cost - making BCM846BSHX the optimal choice for thermally stable, precision analog functions demanding verified monolithic matching.
Availability
BCM846BSHX is available at Aetrix Electronics and suitable for current mirror circuits, differential amplifier front-ends, active load configurations, and temperature-stable bias generators requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BCM846BSHX 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 logic, discretes, and MOSFETs - delivering robust, scalable components for industrial, automotive, and consumer applications.
BCM846BSHX belongs to Nexperia's matched bipolar transistor product line, engineered specifically for analog signal conditioning where monolithic parameter matching and thermal tracking are essential for DC precision and long-term stability.
FAQ
What is the maximum allowable junction temperature for BCM846BSHX?
The absolute maximum junction temperature is 175 °C, validated per IEC 60134 limiting values. Operation at this temperature requires full derating of Ptot to zero and adherence to FR4 PCB mounting conditions specified in the datasheet - including single-sided 35 µm copper and standard solder footprint.
Can BCM846BSHX be used in a current mirror with emitter degeneration resistors?
Yes - its matched hFE and VBE allow precise current mirroring even with emitter resistors. Degeneration improves output impedance and linearity; the 5% hFE matching tolerance ensures current ratio error remains below 0.5% at 25 °C, with thermal tracking minimizing drift across temperature.
Is BCM846BSHX qualified for automotive applications?
No - the datasheet explicitly states this is a non-automotive qualified product. It is neither tested nor warranted for AEC-Q101 stress requirements or automotive temperature ranges (−40 °C to +125 °C ambient). For automotive use, consult Nexperia's automotive-grade alternatives such as BCM846BSH-Q.
How does the pinout support differential pair layout?
Pin 1 (E1) and Pin 4 (E2) are adjacent emitters, while Pins 2 (B1) and 5 (B2) are adjacent bases - enabling symmetrical PCB routing with matched trace lengths and minimal parasitic imbalance. This physical arrangement directly supports low-offset differential amplifier layouts on dense analog boards.
BCM846BSHX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Transistor Type:
- 2 NPN (Dual)
- Current - Collector (Ic) (Max):
- 100mA
- Voltage - Collector Emitter Breakdown (Max):
- 65V
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-TSSOP
BCM846BSHX FAQ
1.How can I place an order for BCM846BSHX through Aetrix?
Please submit a Request for Quotation (RFQ) for BCM846BSHX 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 BCM846BSHX reliable?
The price and inventory of BCM846BSHX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCM846BSHX is usually 5 days.
3.What payment methods are accepted for BCM846BSHX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCM846BSHX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCM846BSHX?
BCM846BSHX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCM846BSHX 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 BCM846BSHX?
For technical support, including BCM846BSHX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCM846BSHX requirements.
6.How does Aetrix verify that BCM846BSHX is sourced from the original manufacturer or authorized distributors?
All BCM846BSHX 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 BCM846BSHX meets industry standards.
7.What is the process for return or replacement of BCM846BSHX?
All BCM846BSHX units undergo pre-shipment inspection (PSI). If there is an issue with BCM846BSHX, 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 BCM846BSHX part is unused and in its original packaging.
Return procedure for BCM846BSHX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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