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Nexperia USA Inc. BC857BS,135
- Part No.:
- BC857BS,135
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Bipolar Transistor Arrays
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
BC857BS,135.pdf
- Description:
- TRANS 2PNP 45V 100MA 6-TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:44,289
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Product details
Overview
BC857BS,135 from Nexperia is a PNP general-purpose double transistor in SOT363-3 (SC-88) package, featuring two matched PNP transistors with VCEO = −45 V, IC = −100 mA per transistor, and hFE = 200–450 at −2 mA/−5 V. It enables compact dual-channel switching or amplification in space-constrained analog and logic interface circuits.
For engineers reviewing the BC857BS,135 datasheet, BC857BS,135 pinout, BC857BS,135 application, or BC857BS,135 equivalent, key selection criteria include matched hFE tracking, low VCE(sat) (≤ −400 mV @ −100 mA/−5 mA), mutual isolation between transistors, and thermal performance on FR4 PCBs (Rth(j-a) = 416 K/W per device).
Technical Context
This dual PNP transistor integrates two electrically isolated, closely matched silicon epitaxial planar transistors in a single TSSOP6 package. Each transistor exhibits identical absolute maximum ratings-including VCBO = −50 V, VEBO = −5 V, and Ptot = 300 mW per device-and shares identical thermal resistance profiles (Rth(j-sp) = 230 K/W).
Its design supports simultaneous biasing of both transistors without cross-coupling, verified by "no mutual interference" specification and independent pinning (E1/B1/C1 and E2/B2/C2). The device operates across −65 °C to +150 °C ambient, with fT = 100 MHz at −10 mA/−5 V, confirming suitability for medium-speed linear and switching applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −45 V per transistor: Enables safe operation in −40 V rail systems with 10% margin. |
| IC | −100 mA per transistor: Supports load switching up to ~100 mA with standard base drive. |
| hFE | 200–450 at −2 mA/−5 V: Ensures predictable DC gain for bias networks and current mirrors. |
| VCE(sat) | ≤ −400 mV at −100 mA/−5 mA: Minimizes conduction loss in saturated-switch applications. |
| Cc | 2.2 pF at −10 V: Limits high-frequency coupling between stages in multi-transistor amplifiers. |
| Rth(j-a) | 416 K/W per device on FR4: Dictates thermal derating above 25 °C ambient for sustained power dissipation. |
Pinout & Package
SOT363-3 (TSSOP6) plastic surface-mount package, 1.3 mm × 2.2 mm footprint, 0.65 mm pitch, 0.95 mm max height, designed for reflow soldering on FR4 PCBs with standard 0.5 mm solder paste pads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | E1 | Emitter of Transistor 1 - referenced to local ground or negative rail in PNP switch configuration. |
| 2 | B1 | Base of Transistor 1 - controls TR1 conduction; requires current-limited negative drive. |
| 3 | C2 | Collector of Transistor 2 - connects to load or next stage; common collector topology possible. |
| 4 | E2 | Emitter of Transistor 2 - independently biased; enables dual-rail or differential pair use. |
| 5 | B2 | Base of Transistor 2 - fully isolated from B1; allows independent control of both transistors. |
| 6 | C1 | Collector of Transistor 1 - output node for TR1; paired with C2 for push-pull or mirror topologies. |
Key Features
| Feature | Design Value |
|---|---|
| Closely matched hFE | Ensures consistent current gain between TR1 and TR2 for precision current mirroring and differential amplifiers. |
| No mutual interference | Guarantees electrical isolation between transistors-critical for noise-sensitive analog signal paths. |
| Low VCE(sat) | Reduces power loss and self-heating during saturation, improving efficiency in discrete logic and driver stages. |
| Low collector capacitance (2.2 pF) | Preserves bandwidth in RF-coupled or high-speed switching applications up to ~100 MHz. |
| Reduced board space | Replaces two discrete SOT23 transistors, saving ≥40% PCB area and assembly cost in dual-channel designs. |
Applications
| LED Driver Pair | Level-Shifting Interface |
|---|---|
|
Use Scenario: Driving dual-color LEDs or bi-directional indicator arrays from 3.3 V microcontroller GPIOs. IC Role / Device Role / Timing Role: Dual PNP switch providing active-low current sinking with matched turn-on characteristics. Use Value: Eliminates need for two separate transistors and associated passives while ensuring synchronized brightness control via matched hFE. |
Use Scenario: Converting 1.8 V logic outputs to −5 V compatible signals for legacy industrial sensors. IC Role / Device Role / Timing Role: Dual-stage level shifter using emitter-follower and common-emitter configurations. Use Value: Leverages independent base control (B1/B2) and isolated emitters (E1/E2) to maintain signal integrity across voltage domains. |
| Dual Current Mirror | Complementary Switch Pair |
|
Use Scenario: Biasing matched op-amp input stages or setting reference currents in analog front-ends. IC Role / Device Role / Timing Role: Precision current mirror core where TR1 sets reference current and TR2 replicates it. Use Value: Matched hFE and thermal coupling in shared package minimize current ratio error (<±5%) over temperature. |
Use Scenario: Constructing discrete complementary push-pull output stages for audio or motor drivers. IC Role / Device Role / Timing Role: PNP half of complementary pair; used with NPN BC847BS to form matched output stage. Use Value: Identical package, pinout symmetry (with BC847BS), and thermal tracking enable balanced switching and reduced crossover distortion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual PNP transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BC857B,115 | Single-transistor variant in SOT23; no second transistor or matched pairing. | Only suitable when one PNP switch is needed; cannot replace dual functionality. | Select only if board layout or BOM simplification prioritizes single-device count over dual-channel integration. |
| MBT3906DW1T1G | ON Semiconductor dual PNP in SOT-363; hFE = 100–300, VCEO = −40 V, higher VCE(sat) (−650 mV @ −100 mA). | Acceptable for lower-performance switching but not precision current mirroring due to wider hFE spread. | Choose when cost sensitivity outweighs gain matching and saturation voltage requirements. |
Compared with BC857BS,135, BC857B,115 lacks dual functionality entirely, while MBT3906DW1T1G trades tighter hFE matching and lower VCE(sat) for broader availability-making BC857BS,135 optimal for space-constrained, performance-critical dual-PNP roles.
Availability
BC857BS,135 is available at Aetrix Electronics and suitable for LED driver circuits, level-shifting interfaces, dual current mirrors, and complementary switch pairs requiring stable component supply and consistent parametric performance across production batches.
Supply support for BC857BS,135 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 essential semiconductors for automotive, industrial, mobile, and computing markets.
The BC857BS,135 belongs to Nexperia's general-purpose bipolar transistor product line, engineered for compact, thermally efficient dual-transistor integration in cost-sensitive and space-constrained analog and digital interface designs.
FAQ
What is the maximum continuous collector current per transistor in BC857BS,135?
The absolute maximum continuous collector current per transistor is −100 mA, as specified in Table 5 (Limiting Values) under "IC collector current". This rating applies at Tamb ≤ 25 °C with proper PCB thermal management; derating is required above that temperature per Figure 1's 300 mW per-device power curve.
Can BC857BS,135 be used as a direct replacement for BC847BS in a circuit?
No-BC857BS,135 is a dual PNP transistor, while BC847BS is its NPN complement. They share identical SOT363-3 packaging and pinout symmetry (mirror image), but opposite polarity. Substitution would invert logic states and likely cause circuit failure unless topology is redesigned for PNP/NPN role reversal.
Does BC857BS,135 support automotive-grade temperature operation?
No-BC857BS,135 is not automotive-qualified. Its data sheet explicitly states in Section 14 ("Legal information") that non-automotive qualified products are "not suitable for automotive use" and "neither qualified nor tested in accordance with automotive testing or application requirements." Use in automotive systems voids warranty and incurs full customer liability.
How is thermal performance affected when both transistors operate simultaneously?
Thermal resistance is specified per device (Rth(j-a) = 416 K/W), meaning total power dissipation must stay within 300 mW for the entire package. Simultaneous operation at full rated current (−100 mA each) exceeds safe limits unless VCE is kept very low; typical design practice limits combined dissipation to ≤250 mW to maintain Tj < 125 °C on standard FR4.
BC857BS,135 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:
- 400mV @ 5mA, 100mA
- Current - Collector Cutoff (Max):
- 15nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 200 @ 2mA, 5V
- Power - Max:
- 200mW
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-TSSOP
BC857BS,135 FAQ
1.How can I place an order for BC857BS,135 through Aetrix?
Please submit a Request for Quotation (RFQ) for BC857BS,135 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 BC857BS,135 reliable?
The price and inventory of BC857BS,135 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC857BS,135 is usually 5 days.
3.What payment methods are accepted for BC857BS,135?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC857BS,135 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC857BS,135?
BC857BS,135 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC857BS,135 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 BC857BS,135?
For technical support, including BC857BS,135 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC857BS,135 requirements.
6.How does Aetrix verify that BC857BS,135 is sourced from the original manufacturer or authorized distributors?
All BC857BS,135 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 BC857BS,135 meets industry standards.
7.What is the process for return or replacement of BC857BS,135?
All BC857BS,135 units undergo pre-shipment inspection (PSI). If there is an issue with BC857BS,135, 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 BC857BS,135 part is unused and in its original packaging.
Return procedure for BC857BS,135:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC857BS,135 Tags
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