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BCX71HT116 Equivalent & Substitute Parts
Part Overview
The BCX71HT116 is a PNP bipolar junction transistor manufactured by Rohm Semiconductor, designed for surface mount applications in the SOT-23-3 (TO-236) package. This component operates at a maximum collector current of 200 mA with a collector-emitter breakdown voltage of 45 V and a maximum power dissipation of 350 mW. The BCX71HT116 is classified as an active product with full RoHS3 compliance and AEC-Q101 automotive qualification available in related variants.
Substitute parts are necessary when the BCX71HT116 becomes unavailable, when design requirements demand higher current capacity, when automotive-grade qualification is required, or when alternative packaging configurations are preferred for manufacturing or supply chain optimization.
Substiute Parts
Key Parameters
| Parameter | BCX71HT116 Value | Unit |
|---|---|---|
| Transistor Type | PNP | — |
| Current - Collector (Ic) Max | 200 | mA |
| Voltage - Collector Emitter Breakdown (Max) | 45 | V |
| Vce Saturation (Max) @ Ib, Ic | 550 @ 1.25mA, 50mA | mV |
| Current - Collector Cutoff (Max) | 100 | nA |
| DC Current Gain (hFE) Min @ Ic, Vce | 140 @ 2mA, 5V | — |
| Power - Max | 350 | mW |
| Frequency - Transition | 180 | MHz |
| Operating Temperature (TJ) | 150 | °C |
| Mounting Type | Surface Mount | — |
| Package / Case | TO-236-3, SC-59, SOT-23-3 | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution of the BCX71HT116 is determined by the following critical parameters:
Transistor Polarity: All substitute parts must be PNP type to maintain circuit functionality and pin compatibility.
Voltage Rating: All substitutes must support a minimum collector-emitter breakdown voltage of 45 V to ensure safe operation within the original design envelope.
Current Capacity: Substitute parts may have equal or higher maximum collector current ratings (200 mA or greater) without circuit degradation, provided power dissipation limits are respected.
Package Compatibility: All substitutes must use the TO-236-3, SC-59, or SOT-23-3 package format to ensure mechanical and electrical compatibility with existing PCB layouts.
Power Dissipation: Substitute parts must support a minimum power rating of 350 mW to handle the thermal load of the original application.
Operating Temperature: All substitutes must support operation at 150°C junction temperature or higher.
Compliance Standards: RoHS3 compliance and MSL Level 1 are maintained across all substitute options. Automotive-grade variants with AEC-Q101 qualification are available for applications requiring enhanced reliability.
Parameter Comparison
| Part Number | Manufacturer | Transistor Type | Ic Max (mA) | Vce Breakdown (V) | Power Max (mW) | Frequency (MHz) | Package | Product Status | Grade |
|---|---|---|---|---|---|---|---|---|---|
| BCX71HT116 | Rohm Semiconductor | PNP | 200 | 45 | 350 | 180 | SOT-23-3 | Active | Standard |
| BCX71H,215 | Nexperia USA Inc. | PNP | 100 | 45 | 250 | 100 | SOT-23-3 | Active | Automotive |
| NSVBCX17LT1G | onsemi | PNP | 500 | 45 | 225 | — | SOT-23-3 | Active | Automotive |
| 2PB709ARL,235 | Nexperia USA Inc. | PNP | 100 | 45 | 250 | 70 | SOT-23-3 | Active | Automotive |
| 2PB709ART,215 | NXP USA Inc. | PNP | 100 | 45 | 250 | 70 | SOT-23-3 | Active | Automotive |
| 2PB709ASL,215 | Nexperia USA Inc. | PNP | 100 | 45 | 250 | 80 | SOT-23-3 | Active | Automotive |
| BC807,215 | Nexperia USA Inc. | PNP | 500 | 45 | 250 | 80 | SOT-23-3 | Active | Automotive |
| BC807-16,215 | Nexperia USA Inc. | PNP | 500 | 45 | 250 | 80 | SOT-23-3 | Active | Automotive |
| BC807-16,235 | Nexperia USA Inc. | PNP | 500 | 45 | 250 | 80 | SOT-23-3 | Active | Automotive |
| BC807-16-7-F | Diodes Incorporated | PNP | 500 | 45 | 310 | 100 | SOT-23-3 | Active | Standard |
Engineering Selection Recommendations
For Direct Replacement (Equal Current Capacity)
The BCX71H,215 manufactured by Nexperia USA Inc. provides direct functional substitution with identical 45 V breakdown voltage and SOT-23-3 package compatibility. This part operates at 100 mA maximum collector current, which is lower than the BCX71HT116's 200 mA rating. Selection of this part is appropriate only when circuit design does not require the full 200 mA current capacity. The BCX71H,215 carries active product status and AEC-Q101 automotive qualification, making it suitable for automotive applications.
For Higher Current Capacity Applications
The NSVBCX17LT1G (onsemi), BC807,215, BC807-16,215, BC807-16,235, and BC807-16-7-F all support 500 mA maximum collector current, providing increased current headroom beyond the BCX71HT116 specification. These parts maintain the 45 V breakdown voltage and SOT-23-3 package format. The onsemi and Nexperia variants carry AEC-Q101 automotive qualification. The BC807-16-7-F from Diodes Incorporated offers 310 mW power dissipation, exceeding the BCX71HT116's 350 mW rating. Selection among these options depends on whether automotive-grade qualification is required for the application.
For Lower Current Applications
The 2PB709 series (2PB709ARL,235, 2PB709ART,215, 2PB709ASL,215) all support 100 mA maximum collector current with 45 V breakdown voltage and SOT-23-3 packaging. These parts carry AEC-Q101 automotive qualification and active product status. The 2PB709 variants differ in transition frequency (70 MHz to 80 MHz) and DC current gain characteristics. Selection is appropriate when circuit requirements do not exceed 100 mA collector current.
Product Status Considerations
All substitute parts listed carry active product status, ensuring continued availability and manufacturing support. The BC847BT116 (NPN type) is marked as "Not For New Designs" and is excluded from substitution recommendations for new circuit development.
Frequently Asked Questions (FAQ)
Q: Can the BCX71HT116 be replaced with an NPN transistor?
A: No. The BCX71HT116 is a PNP transistor. NPN substitutes such as the BC847BT116 have opposite polarity and cannot function as direct replacements without complete circuit redesign. Pin connections and bias requirements differ fundamentally between PNP and NPN types.
Q: What is the minimum collector current rating required for a substitute part?
A: Substitute parts must support a maximum collector current equal to or greater than 200 mA to maintain compatibility with the BCX71HT116's current specification. Parts with lower ratings (such as 100 mA variants) may be used only if circuit design analysis confirms that maximum circuit current does not exceed the substitute part's rating.
Q: Are all substitute parts compatible with existing PCB layouts?
A: Yes. All substitute parts listed use the TO-236-3, SC-59, or SOT-23-3 package format, which are mechanically and electrically equivalent. Pin assignments are identical across all listed substitutes, allowing direct PCB replacement without layout modification.
Q: What is the difference between standard-grade and automotive-grade variants?
A: Automotive-grade variants carry AEC-Q101 qualification, indicating compliance with automotive reliability and testing standards. These parts are suitable for applications requiring enhanced reliability and temperature cycling performance. Standard-grade parts (such as BCX71HT116 and BC807-16-7-F) are suitable for general industrial and consumer applications.
Q: Can a 500 mA rated transistor be used in place of the 200 mA BCX71HT116?
A: Yes. A higher current rating does not degrade circuit performance. The 500 mA variants (NSVBCX17LT1G, BC807 series) provide additional current capacity without affecting normal operation at lower current levels. Circuit design must still respect the 45 V breakdown voltage and power dissipation limits.
Q: What is the significance of transition frequency differences among substitute parts?
A: Transition frequency (fT) indicates the frequency at which transistor current gain drops to unity. The BCX71HT116 operates at 180 MHz. Substitute parts with lower transition frequencies (70 MHz to 100 MHz) are suitable for applications operating below their rated frequency. Applications requiring operation near or above 180 MHz should select substitutes with equal or higher transition frequency ratings.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All substitute parts listed carry RoHS3 compliance certification, meeting environmental and hazardous substance restrictions. Moisture sensitivity level (MSL) is Level 1 (Unlimited) across all options, indicating no special moisture protection requirements during storage or handling.
Q: What packaging options are available for substitutes?
A: All substitute parts use SOT-23-3 (TO-236) surface mount packaging. Packaging variants such as Tape & Reel (TR), Bulk, and Cut Tape (CT) represent different supply formats for the same physical package. Selection of packaging format depends on manufacturing process requirements and inventory management practices.
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