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BCP53 Equivalent & Substitute Parts
Part Overview
The BCP53 is a PNP bipolar junction transistor manufactured by onsemi, rated for 80 V collector-emitter breakdown voltage and 1.2 A maximum collector current in a surface mount SOT-223-4 package. The device is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing design requirements and procurement needs. Substitute parts maintain electrical compatibility while offering enhanced specifications or alternative packaging and qualification options.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Transistor Type | PNP | — |
| Voltage - Collector Emitter Breakdown (Max) | 80 | V |
| Current - Collector (Ic) (Max) | 1.2 | A |
| Vce Saturation (Max) @ Ib, Ic | 500mV @ 50mA, 500mA | — |
| Current - Collector Cutoff (Max) | 100nA | — |
| DC Current Gain (hFE) (Min) @ Ic, Vce | 40 @ 150mA, 2V | — |
| Power - Max | 1.5 | W |
| Operating Temperature | -55 to 150 | °C |
| Mounting Type | Surface Mount | — |
| Package / Case | TO-261-4, TO-261AA | — |
| Supplier Device Package | SOT-223-4 | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution of the BCP53 is determined by the following critical electrical and mechanical parameters:
Electrical Compatibility Criteria:
- Transistor type must be PNP
- Collector-emitter breakdown voltage must be 80 V or greater
- Maximum collector current must be equal to or exceed 1.2 A
- Vce saturation characteristics must match at specified bias conditions
- DC current gain (hFE) must meet or exceed minimum specification
- Power dissipation rating must support application requirements
Mechanical Compatibility Criteria:
- Surface mount package type (SOT-223 or equivalent TO-261 variants)
- Pin configuration compatibility with TO-261-4 or TO-261AA footprints
Compliance and Status Criteria:
- RoHS3 compliance required
- MSL rating of 1 (Unlimited) acceptable
- Product status (Active preferred for new designs; Obsolete parts acceptable for legacy support)
Substitute parts are grouped into two categories: direct equivalents with enhanced specifications (higher current or power ratings) and variants with different DC current gain grades or packaging formats. All listed substitutes maintain electrical compatibility within the specified parameter ranges.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Ic (Max) [A] | Vce Breakdown [V] | hFE (Min) @ 150mA, 2V | Power (Max) [W] | Frequency - Transition [MHz] | Operating Temp [°C] | Package | Packaging Type |
|---|---|---|---|---|---|---|---|---|---|---|
| BCP53 | onsemi | Obsolete | 1.2 | 80 | 40 | 1.5 | — | -55 to 150 | SOT-223-4 | — |
| BCP53T1G | onsemi | Active | 1.5 | 80 | 40 | 1.5 | 50 | -65 to 150 | SOT-223 | Cut Tape (CT) & Digi-Reel® |
| BCP53-10T1G | onsemi | Active | 1.5 | 80 | 63 | 1.5 | 50 | -65 to 150 | SOT-223 | Cut Tape (CT) & Digi-Reel® |
| BCP53-16T1G | onsemi | Active | 1.5 | 80 | 100 | 1.5 | 50 | -65 to 150 | SOT-223 | Cut Tape (CT) & Digi-Reel® |
| BCP53-16T3G | onsemi | Active | 1.5 | 80 | 100 | 1.5 | 50 | -65 to 150 | SOT-223 | Cut Tape (CT) & Digi-Reel® |
| SBCP53T1G | onsemi | Active | 1.5 | 80 | 40 | 1.5 | 50 | -65 to 150 | SOT-223 | Tape & Reel (TR) |
| BCP53,115 | Nexperia USA Inc. | Active | 1.0 | 80 | 63 | 1.0 | 145 | -55 to 150 | SOT-223 | Tape & Reel (TR) |
| BCP53-10,115 | Nexperia USA Inc. | Active | 1.0 | 80 | 63 | 1.0 | 145 | -55 to 150 | SOT-223 | Tape & Reel (TR) |
| BCP53-10,135 | Nexperia USA Inc. | Active | 1.0 | 80 | 63 | 1.0 | 145 | -55 to 150 | SOT-223 | Tape & Reel (TR) |
| BCP53-16 | STMicroelectronics | Active | 1.0 | 80 | 100 | 1.6 | 50 | -55 to 150 | SOT-223 | Cut Tape (CT) & Digi-Reel® |
| BCP53-16,115 | Nexperia USA Inc. | Active | 1.0 | 80 | 100 | 1.0 | 145 | -55 to 150 | SOT-223 | Cut Tape (CT) & Digi-Reel® |
Engineering Selection Recommendations
Primary Substitutes (onsemi Manufacturer):
BCP53T1G, BCP53-10T1G, BCP53-16T1G, and BCP53-16T3G are direct onsemi equivalents with active product status. These parts maintain the 80 V breakdown voltage and 1.5 A maximum collector current, exceeding the original BCP53 specification of 1.2 A. All variants are RoHS3 compliant with MSL 1 rating. Selection among these variants depends on DC current gain requirements: BCP53T1G and SBCP53T1G provide hFE minimum of 40, while BCP53-10T1G offers hFE minimum of 63, and BCP53-16T1G and BCP53-16T3G provide hFE minimum of 100. SBCP53T1G includes automotive qualification (AEC-Q101) and is supplied in Tape & Reel format.
Secondary Substitutes (Alternative Manufacturers):
Nexperia USA Inc. and STMicroelectronics offer BCP53 variants with active product status. These parts maintain 80 V breakdown voltage but are rated for 1.0 A maximum collector current, which is below the original 1.2 A specification. These substitutes are suitable only for applications where collector current does not exceed 1.0 A. Nexperia parts (BCP53,115, BCP53-10,115, BCP53-10,135, BCP53-16,115) feature higher transition frequency (145 MHz) and automotive qualification (AEC-Q100). STMicroelectronics BCP53-16 provides 1.6 W power rating and 50 MHz transition frequency.
Substitution Constraints:
Applications requiring collector current between 1.0 A and 1.2 A must use onsemi BCP53T1G, BCP53-10T1G, BCP53-16T1G, or BCP53-16T3G. Applications limited to 1.0 A maximum collector current may use Nexperia or STMicroelectronics variants. All substitutes maintain SOT-223 package compatibility with TO-261-4 and TO-261AA footprints.
Frequently Asked Questions (FAQ)
Q: Can BCP53T1G directly replace BCP53 in all applications?
A: BCP53T1G is electrically compatible with BCP53 for applications operating at or below 1.2 A collector current. BCP53T1G provides enhanced specifications: 1.5 A maximum collector current (versus 1.2 A), extended operating temperature range (-65°C to 150°C versus -55°C to 150°C), and 50 MHz transition frequency. The part is pin-compatible in SOT-223 package format. Verification of application requirements is necessary only if design margins depend on the original -55°C lower temperature limit.
Q: What is the difference between BCP53-10T1G and BCP53-16T1G?
A: Both parts are onsemi BCP53 variants with identical electrical ratings: 80 V breakdown voltage, 1.5 A maximum collector current, 1.5 W power dissipation, and SOT-223 package. The primary difference is DC current gain: BCP53-10T1G specifies hFE minimum of 63 at 150 mA collector current and 2 V Vce, while BCP53-16T1G specifies hFE minimum of 100 at the same conditions. Selection depends on circuit bias point requirements and gain tolerance specifications.
Q: Are Nexperia BCP53,115 and BCP53-10,115 interchangeable?
A: Nexperia BCP53,115 and BCP53-10,115 are electrically identical: both rated for 1.0 A maximum collector current, 80 V breakdown voltage, hFE minimum of 63, and 145 MHz transition frequency. Both include automotive qualification (AEC-Q100) and are supplied in Tape & Reel packaging. These parts are interchangeable for applications not exceeding 1.0 A collector current.
Q: Why do some substitutes have lower collector current ratings than the original BCP53?
A: Nexperia USA Inc. and STMicroelectronics BCP53 variants are rated for 1.0 A maximum collector current, which is lower than the original BCP53 specification of 1.2 A. These parts are suitable only for applications where actual collector current does not exceed 1.0 A. For applications requiring 1.2 A or higher collector current capability, onsemi BCP53T1G, BCP53-10T1G, BCP53-16T1G, or BCP53-16T3G must be selected.
Q: What is the significance of the ",115" and ",135" designations in Nexperia part numbers?
A: The ",115" and ",135" designations in Nexperia part numbers indicate packaging and tape format specifications. BCP53-10,115 and BCP53-10,135 are electrically identical but supplied in different tape configurations. Selection between these variants depends on procurement and assembly equipment compatibility requirements.
Q: Is SBCP53T1G suitable for automotive applications?
A: SBCP53T1G is qualified to AEC-Q101 automotive standard and is suitable for automotive applications. This part is manufactured by onsemi, rated for 1.5 A maximum collector current, 80 V breakdown voltage, and is supplied in Tape & Reel packaging. SBCP53T1G maintains the same electrical specifications as BCP53T1G with automotive qualification added.
Q: Can BCP53-16 from STMicroelectronics replace BCP53 in high-current applications?
A: BCP53-16 from STMicroelectronics is rated for 1.0 A maximum collector current, which is below the original BCP53 specification of 1.2 A. This part is not suitable for applications requiring collector current between 1.0 A and 1.2 A. For such applications, onsemi BCP53T1G or higher-rated variants must be used.
Q: What packaging options are available for BCP53 substitutes?
A: Substitute parts are available in two packaging formats: Cut Tape (CT) & Digi-Reel® and Tape & Reel (TR). onsemi BCP53T1G, BCP53-10T1G, BCP53-16T1G, and BCP53-16T3G are supplied in Cut Tape & Digi-Reel format. SBCP53T1G and Nexperia variants are supplied in Tape & Reel format. All parts use SOT-223 package with TO-261-4 and TO-261AA footprint compatibility.
Q: Are all substitute parts RoHS3 compliant?
A: All listed substitute parts are RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. Compliance status is identical across all variants, meeting environmental and regulatory requirements for commercial and automotive applications.
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