N0118GA,412 SCR 600V 800MA TO-92-3 Equivalent & Substitute Parts

Part Overview

The N0118GA,412 is a 600V 800mA sensitive gate silicon controlled rectifier (SCR) manufactured by WeEn Semiconductors in TO-92-3 through-hole packaging. This component is classified as active product status and is RoHS compliant. SCR substitutes are necessary when the primary part becomes unavailable, when alternative packaging formats are required, or when sourcing from multiple manufacturers is needed for supply chain resilience.

Key Parameters

Parameter	N0118GA,412
Manufacturer	WeEn Semiconductors
Voltage - Off State	600 V
Voltage - Gate Trigger (Vgt) Max	800 mV
Current - Gate Trigger (Igt) Max	7 µA
Voltage - On State (Vtm) Max	1.95 V
Current - On State (It RMS) Max	800 mA
Current - Hold (Ih) Max	5 mA
Current - Off State Max	10 µA
SCR Type	Sensitive Gate
Mounting Type	Through Hole
Package / Case	TO-226-3, TO-92-3 (TO-226AA)
RoHS Status	RoHS Compliant
MSL	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the N0118GA,412 is determined by the following critical parameters:

Voltage Rating (Off State): Must equal 600V
Gate Trigger Voltage (Vgt): Must not exceed 800 mV
On-State Current (It RMS): Must support minimum 800 mA
SCR Type: Must be Sensitive Gate
Mounting Type: Must be Through Hole
Package: Must be TO-92-3 or equivalent TO-226-3 form factor
Compliance: RoHS status must be compliant or ROHS3 compliant

Substitute parts are grouped into two categories:

Category A - Direct 800mA Equivalents: Parts with on-state current (It RMS) rated at 800 mA, matching the primary part's current specification.

Category B - Higher Current Alternatives: Parts with on-state current (It RMS) rated at 1.5A, providing increased current capacity while maintaining all other critical parameters.

Parameter Comparison

Part Number	Manufacturer	Voltage Off State	Vgt Max (mV)	Igt Max (µA)	Vtm Max (V)	It RMS Max (mA)	Ih Max (mA)	Ioff Max (µA)	Itsm 50/60Hz (A)	Operating Temp	Package	RoHS Status
N0118GA,412	WeEn Semiconductors	600V	800	7	1.95	800	5	10	8, 9	—	TO-92-3	RoHS Compliant
EC103M	Littelfuse	600V	800	200	1.7	800	5	1	16, 20	-40°C ~ 110°C	TO-92	ROHS3 Compliant
EC103M1	Littelfuse Inc.	600V	800	12	1.7	800	5	1	16, 20	-40°C ~ 110°C	TO-92	ROHS3 Compliant
P0111MA 1AA3	STMicroelectronics	600V	800	25	1.95	800	5	10	7, 8	-40°C ~ 125°C	TO-92-3	ROHS3 Compliant
P0118MA 2AL3	STMicroelectronics	600V	800	5	1.95	800	5	10	7, 8	-40°C ~ 125°C	TO-92-3	ROHS3 Compliant
S602ES	Littelfuse Inc.	600V	800	200	1.7	1500	5	5	12.5, 15	-40°C ~ 125°C	TO-92	ROHS3 Compliant
S602ESAP	Littelfuse Inc.	600V	800	200	1.7	1500	5	5	12.5, 15	-40°C ~ 125°C	TO-92	ROHS3 Compliant
S6X8ES	Littelfuse Inc.	600V	800	200	1.7	800	5	3	8, 10	-40°C ~ 125°C	TO-92	ROHS3 Compliant
S6X8ESRP	Littelfuse Inc.	600V	800	200	1.7	800	5	3	8, 10	-40°C ~ 125°C	TO-92	ROHS3 Compliant
TCR22-8	Littelfuse Inc.	600V	800	200	1.5	1500	5	2	16, 20	-40°C ~ 110°C	TO-92	ROHS3 Compliant
TCR22-8RP	Littelfuse Inc.	600V	800	200	1.5	1500	5	2	16, 20	-40°C ~ 110°C	TO-92	REACH Affected

Engineering Selection Recommendations

Direct Equivalents (800 mA Rating)

EC103M and EC103M1 from Littelfuse are direct current equivalents with 800 mA on-state RMS current. Both maintain 600V off-state voltage and 800 mV gate trigger voltage. EC103M1 features lower gate trigger current (12 µA) compared to EC103M (200 µA), providing closer gate sensitivity matching to the N0118GA,412 (7 µA). Both are ROHS3 compliant with operating temperature range of -40°C to 110°C.

P0111MA 1AA3 and P0118MA 2AL3 from STMicroelectronics are 800 mA equivalents in TO-92-3 packaging. P0118MA 2AL3 matches the N0118GA,412 gate trigger current specification (5 µA) more closely than P0111MA 1AA3 (25 µA). Both support extended operating temperature to -40°C to 125°C and are ROHS3 compliant.

S6X8ES and S6X8ESRP from Littelfuse maintain 800 mA on-state current with improved off-state current characteristics (3 µA). S6X8ESRP is supplied in cut tape format versus bulk packaging of S6X8ES. Both are ROHS3 compliant with -40°C to 125°C operating range.

Higher Current Alternatives (1.5 A Rating)

S602ES, S602ESAP, TCR22-8, and TCR22-8RP provide 1.5A on-state RMS current capacity. These parts maintain all critical voltage and gate specifications while offering increased current headroom. S602ES and S602ESAP are functionally identical, differing only in packaging (bulk versus tape & box). TCR22-8 and TCR22-8RP are functionally identical, differing in packaging format (bulk versus cut tape). All four parts are ROHS3 compliant with -40°C to 125°C operating range, except TCR22-8RP which shows REACH Affected status.

Compliance Considerations

All substitute parts maintain RoHS compliance. TCR22-8RP is the only part with REACH Affected status, which may require additional documentation in regulated supply chains. All parts maintain MSL 1 (Unlimited) moisture sensitivity level.

Frequently Asked Questions (FAQ)

Q: Can I use a 1.5A rated SCR as a substitute for the 800 mA N0118GA,412?

A: Yes. Parts rated for 1.5A on-state current (S602ES, S602ESAP, TCR22-8, TCR22-8RP) are electrically compatible substitutes. The higher current rating provides additional design margin and does not degrade performance in applications requiring 800 mA or less. All critical parameters—voltage rating, gate trigger specifications, and package form factor—remain compatible.

Q: What is the difference between EC103M and EC103M1?

A: Both are 600V 800mA SCRs from Littelfuse in TO-92 packaging. The primary difference is gate trigger current: EC103M1 specifies 12 µA maximum versus EC103M at 200 µA maximum. EC103M1 provides gate sensitivity closer to the N0118GA,412 (7 µA). Both are ROHS3 compliant and functionally equivalent for most applications.

Q: Why do some substitute parts have different on-state voltage (Vtm) specifications?

A: Vtm variation between manufacturers reflects different device design and manufacturing processes. The N0118GA,412 specifies 1.95V maximum, while Littelfuse parts specify 1.7V and TCR22-8 specifies 1.5V. Lower Vtm values indicate improved on-state efficiency. All values remain within acceptable operating ranges for sensitive gate SCR applications.

Q: What is the significance of packaging differences (bulk, cut tape, tape & box)?

A: Packaging format affects handling, storage, and automated assembly compatibility. Bulk packaging suits manual assembly and small-quantity applications. Cut tape (CT) and tape & box (TB) formats are optimized for pick-and-place machine assembly in high-volume production. Electrical performance is identical across packaging variants of the same part number.

Q: Are P0111MA 1AA3 and P0118MA 2AL3 interchangeable?

A: Both are STMicroelectronics 600V 800mA SCRs in TO-92-3 packaging with identical voltage and current ratings. P0118MA 2AL3 features lower gate trigger current (5 µA) matching the N0118GA,412 specification more closely than P0111MA 1AA3 (25 µA). For applications with tight gate drive requirements, P0118MA 2AL3 is the preferred substitute.

Q: What does REACH Affected status mean for TCR22-8RP?

A: REACH Affected indicates the part may contain substances subject to REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) regulations. This status requires additional compliance documentation in certain supply chains and geographic markets. TCR22-8 (bulk packaging) maintains ROHS3 Compliant status without REACH Affected designation and is the preferred alternative if REACH compliance is required.

Q: Can I substitute based on gate trigger current alone?

A: No. Gate trigger current is one parameter among many. Valid substitution requires matching all critical parameters: off-state voltage (600V), gate trigger voltage (800 mV maximum), on-state current rating (800 mA minimum), SCR type (sensitive gate), mounting type (through hole), and package form factor (TO-92-3 or equivalent). Partial parameter matching does not ensure functional compatibility.

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