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Nexperia USA Inc. BCM857BSH-QX
- Part No.:
- BCM857BSH-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Bipolar Transistor Arrays
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
BCM857BSH-QX.pdf
- Description:
- TRANS 2PNP 45V 100MA 6-TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:7,780
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Product details
Overview
BCM857BSH-QX from Nexperia is a PNP/PNP matched double transistor in SOT363 (SC-88) package, rated for −45 V VCEO, −100 mA IC, and 175 °C junction temperature. It delivers precise current gain matching (0.95–1.05) and base-emitter voltage matching (≤2 mV) for high-accuracy analog functions in automotive-grade circuits.
For engineers reviewing the BCM857BSH-QX datasheet, BCM857BSH-QX pinout, BCM857BSH-QX application, or BCM857BSH-QX equivalent, key selection criteria include dual-transistor matching tolerance, thermal robustness up to 175 °C, low VCEsat (−200 mV at −100 mA), and AEC-Q101 qualification for under-hood signal conditioning.
Technical Context
This device integrates two electrically isolated PNP transistors on a single die with tightly controlled parametric matching-enabling stable differential pair operation without mutual interference. Its matched hFE and VBE ensure consistent biasing across temperature (−55 °C to +175 °C) and load conditions.
The SOT363 package supports high-density PCB layouts while maintaining per-device Ptot = 400 mW at Tamb ≤ 25 °C and Rth(j-a) = 375 K/W. Low collector capacitance (1.8 pF) and fT = 100 MHz support stable operation in precision amplification and current mirror topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −45 V: Maximum safe collector-emitter voltage before breakdown in open-base configuration. |
| IC | −100 mA: Continuous collector current rating per transistor; supports medium-signal analog stages. |
| hFE Matching | 0.95–1.05: Ratio of DC current gains between TR1 and TR2 ensures <±5% gain error in differential pairs. |
| VBE Matching | ≤2 mV: Base-emitter voltage difference enables sub-mV offset in current mirrors and amplifiers. |
| Tj Max | 175 °C: Junction temperature limit validated per AEC-Q101, enabling under-hood automotive use. |
| Cc | 1.8 pF: Low collector capacitance minimizes high-frequency phase shift in feedback networks. |
| VCEsat | −200 mV @ −100 mA: Low saturation voltage reduces power loss and improves efficiency in active loads. |
Pinout & Package
Package: SOT363 (TSSOP6), 2.1 mm × 1.25 mm × 0.95 mm body, 0.65 mm lead pitch, surface-mount plastic package qualified for automotive reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | E1 | Emitter of Transistor 1 - referenced node for TR1 current sourcing path. |
| 2 | B1 | Base of Transistor 1 - control input for TR1; requires negative bias relative to E1. |
| 3 | C2 | Collector of Transistor 2 - output node for TR2; sinks current when B2 is biased. |
| 4 | E2 | Emitter of Transistor 2 - referenced node for TR2 current sourcing path. |
| 5 | B2 | Base of Transistor 2 - independent control input for TR2; no coupling to B1. |
| 6 | C1 | Collector of Transistor 1 - output node for TR1; sinks current when B1 is biased. |
Key Features
| Feature | Design Value |
|---|---|
| Matched hFE and VBE | Enables <1 mV input offset in current mirrors and <0.5% gain error in differential amplifiers. |
| AEC-Q101 qualification | Validated for automotive applications including engine control modules and ADAS sensor interfaces. |
| No mutual interference | Electrically isolated transistors prevent crosstalk in dual-channel biasing or mirrored reference generation. |
| Low VCEsat and Cc | Reduces thermal rise in high-current mirrors and preserves bandwidth in wideband amplifier feedback loops. |
Applications
| Current Mirror | Differential Amplifier |
|---|---|
Use Scenario: Precision current replication in sensor biasing and DAC output stages. IC Role / Device Role / Timing Role: Dual-transistor pair provides matched current transfer ratio with minimal temperature drift. Use Value: ≤2 mV VBE mismatch ensures <0.2% current error over −40 °C to +125 °C ambient. | Use Scenario: Input stage of automotive-grade operational amplifiers and comparator front-ends. IC Role / Device Role / Timing Role: Matched PNP pair forms high-input-impedance, low-offset differential pair. Use Value: 0.95–1.05 hFE matching maintains common-mode rejection >70 dB across operating temperature. |
| Active Load | Temperature-Stable Reference |
Use Scenario: Constant-current active load in voltage regulator error amplifiers. IC Role / Device Role / Timing Role: One transistor acts as programmable current sink; second provides matched bias. Use Value: −200 mV VCEsat at −100 mA enables <100 mW dissipation per side in compact layout. | Use Scenario: PTAT (proportional-to-absolute-temperature) reference generation in power management ICs. IC Role / Device Role / Timing Role: Paired transistors with known ΔVBE generate accurate thermal voltage references. Use Value: Matched geometry and thermal coupling minimize curvature error in ΔVBE-based bandgap circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar matched PNP transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BC857B-D-13 | Single PNP transistor, no matching; VCEO = −45 V, IC = −100 mA, but no hFE/VBE pairing. | Not suitable for current mirrors or differential pairs requiring tracking. | Select only for discrete biasing where matching is unnecessary. |
| BCM847BSH-Q | NPN/NPN complement; identical package and matching specs, but opposite polarity. | Used in NPN-based current mirrors and emitter-coupled logic, not PNP topologies. | Choose when circuit architecture requires NPN matched pairs instead of PNP. |
Compared with BC857B-D-13, BCM857BSH-QX provides essential dual-transistor matching for analog accuracy; compared with BCM847BSH-Q, it enables PNP-specific topologies like high-side current sources and complementary differential stages.
Availability
BCM857BSH-QX is available at Aetrix Electronics and suitable for automotive engine control units, ADAS sensor signal conditioning, and industrial temperature-stable reference designs requiring stable component supply and AEC-Q101 compliance.
Supply support for BCM857BSH-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 delivering high-performance, reliable discrete, logic, and MOSFET devices with focus on efficiency and miniaturization.
This part belongs to Nexperia's AEC-Q101-qualified matched transistor product line, engineered specifically for high-precision analog functions in harsh automotive and industrial environments.
FAQ
What is the maximum allowable continuous collector current per transistor?
The BCM857BSH-QX supports −100 mA continuous collector current per transistor under standard PCB mounting conditions (FR4, single-sided, 35 µm copper). At higher ambient temperatures, derating applies per Figure 1: total device Ptot = 400 mW at Tamb ≤ 25 °C, decreasing linearly above that point.
How is the VBE matching specification measured and verified?
VBE1−VBE2 is measured at VCE = −5 V, IC = −2 mA, and Tamb = 25 °C; the absolute difference between the two transistors' base-emitter voltages is reported, with maximum deviation ≤2 mV. This is verified during AEC-Q101 qualification testing across wafer lots and temperature extremes.
Can BCM857BSH-QX be used in place of discrete BC857B transistors in existing designs?
Yes, but only where dual-transistor matching is required. The SOT363 footprint matches standard dual-transistor layouts, and pinout (E1-B1-C2-E2-B2-C1) is standardized. However, replacing two separate BC857Bs with BCM857BSH-QX adds matching benefits-not just drop-in compatibility-and may require minor layout review for thermal coupling.
Is the BCM857BSH-QX suitable for high-frequency small-signal amplification?
Yes, with fT = 100 MHz at IC = −10 mA and VCE = −5 V, it supports small-signal amplification up to ~10–20 MHz depending on bias and load. Its 1.8 pF collector capacitance and low noise figure (3.3 dB at 1 kHz) make it appropriate for audio and sensor front-end stages, though not RF power applications.
BCM857BSH-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 PNP (Dual)
- Current - Collector (Ic) (Max):
- 100mA
- Voltage - Collector Emitter Breakdown (Max):
- 45V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 5mA, 100mA
- Current - Collector Cutoff (Max):
- 15nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 200 @ 2mA, 5V
- Power - Max:
- 270mW
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-TSSOP
BCM857BSH-QX FAQ
1.How can I place an order for BCM857BSH-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BCM857BSH-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 BCM857BSH-QX reliable?
The price and inventory of BCM857BSH-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCM857BSH-QX is usually 5 days.
3.What payment methods are accepted for BCM857BSH-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCM857BSH-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCM857BSH-QX?
BCM857BSH-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCM857BSH-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 BCM857BSH-QX?
For technical support, including BCM857BSH-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCM857BSH-QX requirements.
6.How does Aetrix verify that BCM857BSH-QX is sourced from the original manufacturer or authorized distributors?
All BCM857BSH-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 BCM857BSH-QX meets industry standards.
7.What is the process for return or replacement of BCM857BSH-QX?
All BCM857BSH-QX units undergo pre-shipment inspection (PSI). If there is an issue with BCM857BSH-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 BCM857BSH-QX part is unused and in its original packaging.
Return procedure for BCM857BSH-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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