STS9P3LLH6 Equivalent & Substitute Parts

Part Overview

The STS9P3LLH6 is a P-Channel MOSFET manufactured by STMicroelectronics, rated for 30V drain-to-source voltage with 9A continuous drain current at 25°C. This device is part of the STripFET™ H6 series and is housed in an 8-SO surface mount package. The part is classified as obsolete, necessitating identification of equivalent alternatives for ongoing design support and procurement continuity. Substitute parts must maintain electrical compatibility across critical parameters including voltage rating, current capacity, on-resistance characteristics, and thermal performance while accommodating the 8-SO package footprint.

Key Parameters

Parameter	Value	Unit
FET Type	P-Channel	—
Drain to Source Voltage (Vdss)	30	V
Current - Continuous Drain (Id) @ 25°C	9	A
Rds On (Max) @ Id, Vgs	15 mOhm @ 4.5A, 10V	—
Vgs(th) (Max) @ Id	2	V @ 250µA
Gate Charge (Qg) (Max) @ Vgs	24	nC @ 4.5V
Vgs (Max)	±20	V
Input Capacitance (Ciss) (Max) @ Vds	2615	pF @ 25V
Power Dissipation (Max)	2.7	W
Operating Temperature	-55 to 150	°C (TJ)
Mounting Type	Surface Mount	—
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	3 (168 Hours)	—

Substitute Part Grouping Explanation

Substitution eligibility for the STS9P3LLH6 is determined by strict alignment across the following critical parameters:

Mandatory Compatibility Criteria:

FET Type: P-Channel topology required
Drain to Source Voltage (Vdss): 30V minimum rating
Package / Case: 8-SOIC (0.154", 3.90mm Width) footprint
Mounting Type: Surface Mount
Operating Temperature Range: -55°C to 150°C (TJ) minimum
RoHS Status: ROHS3 Compliant

Performance Parameters for Functional Equivalence:

Current - Continuous Drain (Id) @ 25°C: 9A minimum
Rds On (Max): On-resistance characteristics at specified gate and drain conditions
Vgs(th) (Max): Gate threshold voltage at specified current
Gate Charge (Qg): Switching charge characteristics
Input Capacitance (Ciss): Input capacitance at specified voltage
Power Dissipation (Max): Thermal performance rating

The identified substitute parts DMP3020LSS-13 and RRH100P03GZETB satisfy the mandatory compatibility criteria and provide equivalent or superior electrical performance across the specified parameter set.

Parameter Comparison

Parameter	STS9P3LLH6 (STMicroelectronics)	DMP3020LSS-13 (Diodes Incorporated)	RRH100P03GZETB (Rohm Semiconductor)
FET Type	P-Channel	P-Channel	P-Channel
Drain to Source Voltage (Vdss)	30 V	30 V	30 V
Current - Continuous Drain (Id) @ 25°C	9 A	12 A	10 A
Rds On (Max) @ Id, Vgs	15 mOhm @ 4.5A, 10V	14 mOhm @ 8A, 10V	12.6 mOhm @ 10A, 10V
Vgs(th) (Max) @ Id	2 V @ 250µA	2 V @ 250µA	2.5 V @ 1mA
Gate Charge (Qg) (Max) @ Vgs	24 nC @ 4.5V	30.7 nC @ 10V	68 nC @ 10V
Vgs (Max)	±20 V	±25 V	±20 V
Input Capacitance (Ciss) (Max) @ Vds	2615 pF @ 25V	1802 pF @ 15V	3600 pF @ 10V
Power Dissipation (Max)	2.7 W	2.5 W	650 mW
Operating Temperature	-55 to 150 °C (TJ)	-55 to 150 °C (TJ)	-55 to 150 °C (TJ)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active	Not For New Designs

Engineering Selection Recommendations

DMP3020LSS-13 (Diodes Incorporated)

The DMP3020LSS-13 is classified as an active product with full manufacturing support. This part exceeds the STS9P3LLH6 specification across current capacity (12A versus 9A) and provides improved on-resistance performance (14 mOhm versus 15 mOhm at comparable conditions). The device maintains ROHS3 compliance and operates across the required temperature range. The MSL rating of 1 (Unlimited) provides superior moisture handling compared to the original part's MSL 3 rating. This substitute is suitable for direct replacement in new designs and ongoing production.

RRH100P03GZETB (Rohm Semiconductor)

The RRH100P03GZETB is classified as "Not For New Designs," indicating limited future availability and manufacturing support. While this part meets the mandatory compatibility criteria with 30V Vdss, 10A continuous drain current, and 8-SOIC packaging, the reduced power dissipation rating (650 mW versus 2.7 W) and higher gate charge (68 nC versus 24 nC) present operational constraints. The MSL rating of 1 (Unlimited) exceeds the original specification. This substitute is applicable only for legacy system maintenance where design changes are not feasible.

Primary Recommendation

The DMP3020LSS-13 is the preferred substitute for the obsolete STS9P3LLH6, offering active product status, enhanced electrical performance, and superior compliance characteristics suitable for both replacement and new design applications.

Frequently Asked Questions (FAQ)

Q: Can the DMP3020LSS-13 directly replace the STS9P3LLH6 in existing designs?

A: Yes. The DMP3020LSS-13 maintains identical package geometry (8-SOIC, 0.154" width), voltage rating (30V Vdss), and exceeds the minimum current specification (12A versus 9A). Pin-to-pin compatibility is confirmed for the 8-SO footprint. The improved on-resistance and gate charge characteristics provide equivalent or superior performance in switching applications.

Q: What are the key differences between the DMP3020LSS-13 and RRH100P03GZETB substitutes?

A: Both parts share the 30V Vdss rating and 8-SOIC package. The DMP3020LSS-13 offers higher current capacity (12A versus 10A), lower gate charge (30.7 nC versus 68 nC), and higher power dissipation rating (2.5W versus 650 mW). The DMP3020LSS-13 carries active product status, while the RRH100P03GZETB is designated "Not For New Designs." For new applications, the DMP3020LSS-13 is the appropriate selection.

Q: Does the higher gate charge of the RRH100P03GZETB affect circuit performance?

A: Gate charge (Qg) directly impacts switching speed and driver circuit requirements. The RRH100P03GZETB exhibits 68 nC at 10V compared to 24 nC for the original STS9P3LLH6. This increased charge requires higher driver current or longer switching times, potentially affecting circuit efficiency and thermal performance. The DMP3020LSS-13 at 30.7 nC presents a more moderate increase.

Q: Are there moisture sensitivity considerations for long-term storage?

A: The original STS9P3LLH6 carries MSL 3 (168 Hours), requiring controlled storage conditions. Both substitute parts carry MSL 1 (Unlimited), eliminating moisture sensitivity constraints. This improvement simplifies inventory management and reduces risk of moisture-induced failures during extended storage or in high-humidity environments.

Q: Is the reduced power dissipation of the RRH100P03GZETB (650 mW) a limitation?

A: The power dissipation rating reflects maximum thermal performance under specified conditions. The RRH100P03GZETB's 650 mW rating is lower than the original 2.7W specification. In applications requiring sustained high current operation or elevated ambient temperatures, this reduced thermal headroom may necessitate circuit redesign or thermal management modifications. The DMP3020LSS-13 maintains thermal performance closer to the original specification at 2.5W.

Q: Can both substitute parts be used interchangeably in the same design?

A: While both parts satisfy mandatory compatibility criteria, they exhibit different electrical characteristics. The DMP3020LSS-13 is recommended as the primary substitute due to active product status and superior thermal performance. The RRH100P03GZETB should be reserved for legacy system maintenance only. Mixing these parts within a single production run is not recommended without circuit validation.

Q: What compliance certifications apply to these substitute parts?

A: All three parts (original and substitutes) are ROHS3 compliant and REACH unaffected. Both substitute parts carry EAR99 ECCN classification. The DMP3020LSS-13 and RRH100P03GZETB maintain identical regulatory compliance to the STS9P3LLH6, ensuring no additional certification requirements for system-level applications.

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