S8X8ESRP Equivalent & Substitute Parts

Part Overview

The S8X8ESRP is a sensitive gate SCR (Silicon Controlled Rectifier) rated for 800V off-state voltage with 800mA RMS on-state current capability. Manufactured by Littelfuse Inc., this thyristor is supplied in Tape & Reel packaging with Through Hole TO-92 mounting. The part maintains Active product status with full ROHS3 compliance and unlimited moisture sensitivity rating. Substitute parts become necessary when addressing packaging format requirements, inventory availability, or specific performance parameter needs within the allowed electrical and mechanical specifications for this thyristor category.

Key Parameters

Parameter	Value	Unit
Voltage - Off State	800	V
Voltage - Gate Trigger (Vgt) Max	800	mV
Current - Gate Trigger (Igt) Max	200	µA
Voltage - On State (Vtm) Max	1.7	V
Current - On State (It RMS) Max	800	mA
Current - Hold (Ih) Max	5	mA
Operating Temperature Range	-40 to 125	°C
Mounting Type	Through Hole	-
Package / Case	TO-226-3, TO-92-3	-
SCR Type	Sensitive Gate	-

Substitute Part Grouping Explanation

Substitution eligibility for the S8X8ESRP is determined by the following criteria:

Mandatory Matching Parameters:

Voltage - Off State: 800V
SCR Type: Sensitive Gate
Mounting Type: Through Hole
Package / Case: TO-226-3, TO-92-3 (TO-226AA) Formed Leads
Operating Temperature Range: -40°C to 125°C

Allowable Parameter Variations: Substitute parts may exceed the main part specifications in the following parameters without compromising compatibility:

Current - Gate Trigger (Igt) Max: May be lower than 200µA
Voltage - On State (Vtm) Max: May be lower than 1.7V
Current - On State (It RMS) Max: May exceed 800mA
Current - Hold (Ih) Max: May exceed 5mA
Current - Non Rep. Surge (Itsm): May exceed specified values

Packaging Format Variations: Substitute parts may differ in supplier packaging format (Tape & Reel, Cut Tape, or Bulk) while maintaining identical electrical performance and mechanical compatibility.

Parameter Comparison

Parameter	S8X8ESRP (Main)	S8X8ESAP	TS110-8A2-AP	X0202NA 1BA2
Manufacturer	Littelfuse Inc.	Littelfuse Inc.	STMicroelectronics	STMicroelectronics
Voltage - Off State (V)	800	800	800	800
Voltage - Gate Trigger Max (mV)	800	800	800	800
Current - Gate Trigger Max (µA)	200	200	100	200
Voltage - On State Max (V)	1.7	1.7	1.6	1.45
Current - On State RMS Max (A)	0.8	0.8	1.25	1.25
Current - Hold Max (mA)	5	5	12	5
Current - Off State Max (µA)	3	3	1	5
SCR Type	Sensitive Gate	Sensitive Gate	Sensitive Gate	Sensitive Gate
Operating Temperature (°C)	-40 to 125	-40 to 125	-40 to 125	-40 to 125
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	TO-226-3, TO-92-3	TO-226-3, TO-92-3	TO-226-3, TO-92-3	TO-226-3, TO-92-3
Packaging Format	Tape & Reel (TR)	Cut Tape (CT)	Cut Tape (CT)	Bulk
Product Status	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

All listed substitute parts maintain Active product status with full ROHS3 compliance and identical regulatory classification (ECCN: EAR99, HTSUS: 8541.30.0080). Selection between S8X8ESRP, S8X8ESAP, TS110-8A2-AP, and X0202NA 1BA2 is determined by packaging format availability and inventory requirements rather than electrical performance constraints.

S8X8ESAP provides identical electrical specifications to the main part S8X8ESRP with the only difference being Cut Tape packaging format instead of Tape & Reel.

TS110-8A2-AP and X0202NA 1BA2 offer enhanced performance margins with higher on-state current ratings (1.25A RMS versus 0.8A RMS) and improved surge current handling, while maintaining full compatibility with the 800V off-state voltage and sensitive gate SCR classification.

Frequently Asked Questions (FAQ)

Q: Can S8X8ESAP be used as a direct replacement for S8X8ESRP?

A: Yes. S8X8ESAP is a parametric equivalent with identical electrical specifications. The only difference is packaging format: S8X8ESAP is supplied in Cut Tape format while S8X8ESRP is supplied in Tape & Reel format. Both parts are mechanically and electrically interchangeable.

Q: What are the key differences between TS110-8A2-AP and the Littelfuse parts?

A: TS110-8A2-AP is manufactured by STMicroelectronics and offers higher on-state current rating (1.25A RMS versus 0.8A RMS), lower gate trigger current requirement (100µA versus 200µA), and improved surge current capability (20A/21A versus 8A/10A). All other parameters including 800V off-state voltage, sensitive gate type, and TO-92 package remain identical.

Q: Is X0202NA 1BA2 compatible with applications designed for S8X8ESRP?

A: Yes. X0202NA 1BA2 meets all mandatory matching parameters: 800V off-state voltage, sensitive gate SCR type, Through Hole mounting, and TO-92-3 package. It provides enhanced performance with 1.25A RMS on-state current and superior surge current handling (22.5A/25A).

Q: What is the significance of packaging format differences?

A: Packaging format (Tape & Reel, Cut Tape, or Bulk) affects handling, storage, and assembly processes but does not impact electrical performance or mechanical compatibility. Selection depends on production volume, assembly equipment, and inventory management requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. S8X8ESRP, S8X8ESAP, TS110-8A2-AP, and X0202NA 1BA2 are all ROHS3 compliant with MSL rating of 1 (Unlimited) and REACH Unaffected status.

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