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ECH8315-TL-H P-Channel MOSFET Equivalent & Substitute Parts
Part Overview
The ECH8315-TL-H is an active P-Channel MOSFET manufactured by onsemi, rated for 30V drain-to-source voltage with 7.5A continuous drain current at 25°C. This surface mount device is packaged in an 8-ECH configuration with flat leads, designed for applications requiring moderate power dissipation up to 1.5W. The part is RoHS3 compliant with unlimited moisture sensitivity rating (MSL 1).
Substitute parts are identified when equivalent electrical performance can be achieved within the specified parameter ranges while maintaining surface mount compatibility and compliance certifications. Substitution becomes necessary due to inventory availability, supply chain constraints, or design flexibility requirements.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| FET Type | P-Channel | — |
| Drain to Source Voltage (Vdss) | 30 | V |
| Current - Continuous Drain (Id) @ 25°C | 7.5 | A |
| Rds On (Max) @ Id, Vgs | 25 mOhm @ 3.5A, 10V | — |
| Power Dissipation (Max) | 1.5 | W |
| Operating Temperature (TJ) | 150 | °C |
| Mounting Type | Surface Mount | — |
| Package / Case | 8-SMD, Flat Lead | — |
| RoHS Status | ROHS3 Compliant | — |
| MSL Rating | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitute parts for the ECH8315-TL-H are identified based on the following critical electrical and mechanical parameters:
Electrical Compatibility Criteria:
- FET Type: P-Channel topology required
- Drain to Source Voltage (Vdss): Minimum 30V rating
- Mounting Type: Surface Mount configuration
- Package Classification: 8-SMD, Flat Lead form factor
- Compliance: RoHS3 compliant, MSL 1 rating
Performance Considerations:
- Continuous drain current (Id) at 25°C
- On-resistance (Rds On) characteristics
- Power dissipation capability
- Gate charge and input capacitance parameters
- Operating temperature range (150°C TJ)
The RQ1E050RPTR from Rohm Semiconductor qualifies as a substitute based on matching voltage rating, P-Channel topology, surface mount configuration, and compliance certifications. Differences in current rating (5A versus 7.5A) and power dissipation (700mW versus 1.5W) require application-level evaluation to confirm suitability for specific circuit requirements.
Parameter Comparison
| Parameter | ECH8315-TL-H (onsemi) | RQ1E050RPTR (Rohm) | Unit |
|---|---|---|---|
| FET Type | P-Channel | P-Channel | — |
| Drain to Source Voltage (Vdss) | 30 | 30 | V |
| Current - Continuous Drain (Id) @ 25°C | 7.5 | 5 | A |
| Rds On (Max) @ Id, Vgs | 25 mOhm @ 3.5A, 10V | 31 mOhm @ 5A, 10V | — |
| Power Dissipation (Max) | 1.5 | 0.7 | W |
| Gate Charge (Qg) (Max) @ Vgs | 18 nC @ 10V | 28 nC @ 10V | — |
| Input Capacitance (Ciss) (Max) @ Vds | 875 pF @ 10V | 1300 pF @ 10V | — |
| Vgs (Max) | ±20 | ±20 | V |
| Operating Temperature (TJ) | 150 | 150 | °C |
| Mounting Type | Surface Mount | Surface Mount | — |
| Package / Case | 8-SMD, Flat Lead | 8-SMD, Flat Lead | — |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | — |
| MSL Rating | 1 (Unlimited) | 1 (Unlimited) | — |
Engineering Selection Recommendations
Primary Part: ECH8315-TL-H
The ECH8315-TL-H remains the specified component for applications requiring the full 7.5A continuous drain current and 1.5W power dissipation capability. This part is active in production, RoHS3 compliant, and carries unlimited moisture sensitivity rating. Current inventory status shows 18,016 pieces available.
Substitute Part: RQ1E050RPTR
The RQ1E050RPTR from Rohm Semiconductor is qualified as an electrical and mechanical substitute where application requirements permit operation at reduced current levels (5A maximum) and lower power dissipation (700mW maximum). Both parts share identical voltage ratings (30V Vdss), surface mount configuration (8-SMD, Flat Lead), and compliance certifications (RoHS3, MSL 1). The substitute part is active in production with 46,342 pieces in inventory.
Selection Basis:
- Both parts maintain P-Channel topology and 30V voltage rating
- Both support surface mount assembly with 8-SMD flat lead packaging
- Both achieve RoHS3 compliance and unlimited moisture sensitivity rating
- Both operate across the full 150°C junction temperature range
- Substitution is valid only when circuit design accommodates the reduced current and power dissipation specifications of the RQ1E050RPTR
Frequently Asked Questions (FAQ)
Q: Can the RQ1E050RPTR directly replace the ECH8315-TL-H in all applications?
A: Direct replacement is valid only when the application circuit operates within the RQ1E050RPTR specifications. The substitute part is rated for 5A continuous drain current and 700mW power dissipation, compared to the primary part's 7.5A and 1.5W ratings. Applications requiring the full current or power capability of the ECH8315-TL-H must use the primary part.
Q: Are the package dimensions identical between these two parts?
A: Both parts use 8-SMD, Flat Lead surface mount packaging. While both are classified as 8-SMD configurations, the specific package designations differ (8-ECH for ECH8315-TL-H and TSMT8 for RQ1E050RPTR). Physical dimensions and PCB footprint compatibility must be verified against manufacturer datasheets before substitution.
Q: What are the key electrical differences between these parts?
A: The primary differences are continuous drain current (7.5A versus 5A), power dissipation (1.5W versus 700mW), on-resistance (25 mOhm versus 31 mOhm at specified conditions), gate charge (18 nC versus 28 nC), and input capacitance (875 pF versus 1300 pF). Voltage rating, gate voltage limits, and operating temperature range are identical.
Q: Do both parts meet the same compliance requirements?
A: Yes. Both the ECH8315-TL-H and RQ1E050RPTR are RoHS3 compliant, carry MSL 1 (unlimited) moisture sensitivity rating, and are REACH unaffected. Both are classified under ECCN EAR99 for export purposes.
Q: Which part should be selected for new designs?
A: The ECH8315-TL-H is the primary specification for new designs requiring 7.5A continuous current capability. The RQ1E050RPTR is appropriate for designs with lower current requirements (5A maximum) where the reduced power dissipation is acceptable. Both parts are active in production and suitable for new applications within their respective electrical ratings.
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