S1K-LTP Equivalent & Substitute Parts

Part Overview

The S1K-LTP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 800 V DC reverse voltage and 1 A average rectified current in a surface mount DO-214AA (HSMB) package. This component is classified as Active product status and is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1). Substitute parts are identified based on matching electrical specifications, mechanical compatibility, and regulatory compliance to support procurement flexibility and supply chain continuity.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	800	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.1 @ 1 A	V
Reverse Recovery Time (trr)	2	µs
Current - Reverse Leakage @ Vr	5 @ 800 V	µA
Capacitance @ Vr, F	12 @ 4V, 1MHz	pF
Operating Temperature - Junction	-55 to 150	°C
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
Technology	Standard	—
Speed	Standard Recovery >500ns, > 200mA (Io)	—

Substitute Part Grouping Explanation

Substitute parts for the S1K-LTP are qualified based on the following criteria:

Electrical Parameter Matching:

Voltage - DC Reverse (Vr) (Max): 800 V
Current - Average Rectified (Io): 1 A
Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 1 A
Reverse Recovery Time (trr): 2 µs
Current - Reverse Leakage @ Vr: 5 µA @ 800 V
Capacitance @ Vr, F: 12 pF @ 4V, 1MHz
Operating Temperature - Junction: -55°C to 150°C

Mechanical Compatibility:

Package / Case: DO-214AA, SMB
Mounting Type: Surface Mount

Regulatory & Compliance Alignment:

RoHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)
REACH Status: REACH Unaffected
ECCN: EAR99

All substitute parts listed maintain identical electrical performance and mechanical form factor, ensuring direct functional replacement in circuit applications.

Parameter Comparison

Parameter	S1K-LTP (Micro Commercial Co)	S1KB (Taiwan Semiconductor)	S1KBH (Taiwan Semiconductor)
Voltage - DC Reverse (Vr) (Max)	800 V	800 V	800 V
Current - Average Rectified (Io)	1 A	1 A	1 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 1 A	1.1 V @ 1 A	1.1 V @ 1 A
Reverse Recovery Time (trr)	2 µs	Not specified	Not specified
Current - Reverse Leakage @ Vr	5 µA @ 800 V	5 µA @ 800 V	5 µA @ 800 V
Capacitance @ Vr, F	12 pF @ 4V, 1MHz	12 pF @ 4V, 1MHz	12 pF @ 4V, 1MHz
Operating Temperature - Junction	-55°C to 150°C	-55°C to 150°C	-55°C to 150°C
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Technology	Standard	Standard	Standard
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
Grade	Standard	Standard	Automotive
Qualification	—	—	AEC-Q101

Engineering Selection Recommendations

S1K-LTP (Micro Commercial Co): Primary component with Active product status. Suitable for general-purpose rectification applications requiring 800 V, 1 A performance in surface mount form factor. Compliant with RoHS3 and REACH regulations.

S1KB (Taiwan Semiconductor): Parametric equivalent offering identical electrical and mechanical specifications. Active product status with higher inventory availability (6903 pcs). Direct functional replacement for standard applications without automotive qualification requirements.

S1KBH (Taiwan Semiconductor): Parametric equivalent with automotive-grade qualification (AEC-Q101). Active product status with high inventory availability (6999 pcs). Suitable for applications requiring automotive-grade reliability and traceability. Electrical and mechanical specifications are identical to S1K-LTP.

Selection between substitute parts depends on application requirements: standard industrial use supports S1KB selection, while automotive or mission-critical applications requiring AEC-Q101 qualification support S1KBH selection.

Frequently Asked Questions (FAQ)

Q: Can S1KB or S1KBH be used as direct replacements for S1K-LTP in existing designs?

A: Yes. Both S1KB and S1KBH are parametric equivalents with identical electrical ratings (800 V, 1 A), forward voltage characteristics (1.1 V @ 1 A), reverse leakage (5 µA @ 800 V), capacitance (12 pF @ 4V, 1MHz), and operating temperature range (-55°C to 150°C). Both use the same DO-214AA SMB surface mount package. Direct PCB-level substitution is supported without circuit modification.

Q: What is the difference between S1KB and S1KBH?

A: S1KB is a standard-grade general-purpose rectifier diode. S1KBH is an automotive-grade variant with AEC-Q101 qualification, designed for automotive and mission-critical applications requiring enhanced reliability documentation and traceability. Electrical and mechanical specifications are identical.

Q: Are all three parts RoHS3 compliant?

A: Yes. S1K-LTP, S1KB, and S1KBH are all RoHS3 compliant with REACH Unaffected status and MSL 1 (Unlimited) moisture sensitivity level.

Q: Does the package form factor differ between these parts?

A: No. All three parts use the DO-214AA SMB surface mount package with identical mechanical dimensions and land pattern compatibility.

Q: Which part should be selected for automotive applications?

A: S1KBH is qualified for automotive applications with AEC-Q101 certification. S1K-LTP and S1KB are suitable for general-purpose and industrial applications.

Q: Are there inventory differences between the substitute parts?

A: Yes. S1K-LTP has 1106 pcs in stock, S1KB has 6903 pcs, and S1KBH has 6999 pcs. Substitute parts offer higher inventory availability for supply chain flexibility.

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