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PEMH24,115 Pre-Biased Dual NPN Transistor Equivalent & Substitute Parts
Part Overview
The PEMH24,115 is a pre-biased dual NPN bipolar junction transistor manufactured by Nexperia USA Inc., designed for surface mount applications in the SOT-666 package. This component integrates two NPN transistors with internal biasing resistors, rated for 50V collector-emitter breakdown voltage and 100mA maximum collector current with 300mW power dissipation.
The PEMH24,115 carries an obsolete product status. Identification of equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this pre-biased transistor configuration.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Transistor Type | 2 NPN - Pre-Biased (Dual) | — |
| Current - Collector (Ic) (Max) | 100 | mA |
| Voltage - Collector Emitter Breakdown (Max) | 50 | V |
| Resistor - Base (R1) | 100 | kOhms |
| Resistor - Emitter Base (R2) | 100 | kOhms |
| DC Current Gain (hFE) (Min) | 80 | — |
| Power - Max | 300 | mW |
| Mounting Type | Surface Mount | — |
| Package / Case | SOT-563, SOT-666 | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution of the PEMH24,115 is determined by strict equivalence across the following critical parameters:
Electrical Equivalence Criteria:
- Transistor configuration: 2 NPN - Pre-Biased (Dual)
- Maximum collector current: 100mA
- Maximum collector-emitter breakdown voltage: 50V
- Internal base resistor (R1): 100kOhms
- Internal emitter-base resistor (R2): 100kOhms
- Minimum DC current gain (hFE): 80 or greater
Mechanical Equivalence Criteria:
- Mounting type: Surface Mount
- Package compatibility: SOT-563 or SOT-666
Compliance Criteria:
- RoHS3 compliance
- Moisture sensitivity level: 1 (Unlimited)
The NSBC115EDXV6T1G manufactured by onsemi satisfies all electrical and mechanical equivalence requirements and maintains full regulatory compliance. This substitute part is available in active product status with higher inventory availability.
Parameter Comparison
| Parameter | PEMH24,115 (Nexperia) | NSBC115EDXV6T1G (onsemi) | Compatibility |
|---|---|---|---|
| Transistor Type | 2 NPN - Pre-Biased (Dual) | 2 NPN - Pre-Biased (Dual) | Equivalent |
| Current - Collector (Ic) (Max) | 100 mA | 100 mA | Equivalent |
| Voltage - Collector Emitter Breakdown (Max) | 50 V | 50 V | Equivalent |
| Resistor - Base (R1) | 100 kOhms | 100 kOhms | Equivalent |
| Resistor - Emitter Base (R2) | 100 kOhms | 100 kOhms | Equivalent |
| DC Current Gain (hFE) (Min) | 80 @ 5mA, 5V | 80 @ 5mA, 10V | Equivalent |
| Power - Max | 300 mW | 500 mW | Substitute exceeds specification |
| Mounting Type | Surface Mount | Surface Mount | Equivalent |
| Package / Case | SOT-563, SOT-666 | SOT-563, SOT-666 | Equivalent |
| Supplier Device Package | SOT-666 | SOT-563 | Both packages supported |
| Product Status | Obsolete | Active | Substitute is current production |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Equivalent |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | Equivalent |
Engineering Selection Recommendations
Primary Substitute: NSBC115EDXV6T1G
The NSBC115EDXV6T1G is the direct functional equivalent for the obsolete PEMH24,115. Selection of this substitute is supported by the following factors:
Electrical Compatibility: All critical electrical parameters match or exceed the original specification. Maximum collector current, breakdown voltage, internal resistor values, and minimum DC current gain are identical. The substitute's maximum power rating of 500mW exceeds the original 300mW specification, providing additional thermal margin.
Regulatory Compliance: Both components maintain ROHS3 compliance and carry identical moisture sensitivity classification (MSL 1 - Unlimited), ensuring compatibility with existing manufacturing and storage protocols.
Product Status: The NSBC115EDXV6T1G is in active production status with established supply chain availability (53,200 pieces in stock), eliminating obsolescence risk associated with the original part.
Package Compatibility: Both SOT-563 and SOT-666 packages are supported by the substitute, accommodating existing PCB layouts and assembly processes.
Frequently Asked Questions (FAQ)
Q: Can the NSBC115EDXV6T1G be used as a direct replacement for the PEMH24,115 in existing designs?
A: Yes. The NSBC115EDXV6T1G meets all electrical and mechanical specifications required for direct substitution. Both components are dual pre-biased NPN transistors with identical maximum collector current (100mA), breakdown voltage (50V), and internal resistor configuration (100kOhms base and emitter-base resistors). Package compatibility exists for both SOT-563 and SOT-666 configurations.
Q: What is the difference in power dissipation between these parts?
A: The PEMH24,115 is rated for 300mW maximum power dissipation, while the NSBC115EDXV6T1G is rated for 500mW. The substitute part provides 200mW additional thermal capacity. This difference does not affect substitution compatibility; applications designed for the original 300mW specification operate within the substitute's thermal envelope.
Q: Are there package considerations when substituting these parts?
A: Both components support SOT-563 and SOT-666 packages. The original PEMH24,115 is supplied in SOT-666 packaging, while the NSBC115EDXV6T1G is supplied in SOT-563 packaging. Both packages are mechanically and electrically compatible for surface mount assembly. PCB layout and footprint design must accommodate the specific package selected.
Q: Do these parts have identical DC current gain characteristics?
A: Both parts specify a minimum DC current gain (hFE) of 80. The PEMH24,115 is characterized at 5mA collector current and 5V collector-emitter voltage, while the NSBC115EDXV6T1G is characterized at 5mA collector current and 10V collector-emitter voltage. The minimum gain specification is equivalent across both measurement conditions.
Q: What is the moisture sensitivity classification for the substitute part?
A: The NSBC115EDXV6T1G carries MSL 1 (Unlimited) classification, identical to the original PEMH24,115. This classification indicates unlimited floor life and no baking requirement prior to assembly, maintaining compatibility with existing manufacturing processes.
Q: Are both parts RoHS compliant?
A: Yes. Both the PEMH24,115 and NSBC115EDXV6T1G are ROHS3 compliant and carry REACH Unaffected status, meeting current environmental and regulatory requirements for electronic component manufacturing and distribution.
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