CS1K-E3/H Equivalent & Substitute Parts Reference

Part Overview

The Vishay General Semiconductor CS1K-E3/H is a general-purpose diode rated for 800V 1A in a DO-214AC (SMA) surface mount package. Its key features include standard recovery speed and low reverse leakage. The CS1K-E3/H is classified as Obsolete, necessitating the identification of alternative models for ongoing designs and maintenance where continued supply is required.

Key Parameters

Parameter	CS1K-E3/H
Manufacturer	Vishay General Semiconductor - Diodes Division
Category	Diodes, Rectifiers
Voltage - DC Reverse (Vr) (Max)	800 V
Current - Average Rectified (Io)	1A
Voltage - Forward (Vf) (Max) @ If	1.12 V @ 1A
Speed	Standard Recovery >500ns, >200mA (Io)
Reverse Recovery Time (trr)	1.5 µs
Current - Reverse Leakage @ Vr	5 µA @ 800 V
Capacitance @ Vr, F	6pF @ 4V, 1MHz
Mounting Type	Surface Mount
Package / Case	DO-214AC, SMA
Operating Temperature - Junction	-55°C ~ 150°C
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution is determined by matching the diodes' electrical and mechanical parameters: rated reverse voltage (Vr), average rectified current (Io), forward voltage at rated current (Vf @ If), recovery speed, reverse recovery time (trr), reverse leakage current (Ir @ Vr), capacitance, mounting type, package/case, and operating temperature. Only diodes meeting these specific parameters within the DO-214AC, SMA package and intended for surface mount applications are considered substitutes.

Parameter Comparison

Parameter	CS1K-E3/H	S1K-E3/61T	US1KH
Manufacturer	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division	Taiwan Semiconductor Corporation
Category	Diodes, Rectifiers	Diodes, Rectifiers	Diodes, Rectifiers
Voltage - DC Reverse (Vr) (Max)	800 V	800 V	800 V
Current - Average Rectified (Io)	1A	1A	1A
Voltage - Forward (Vf) (Max) @ If	1.12 V @ 1A	1.1 V @ 1A	1.7 V @ 1A
Speed	Standard Recovery >500ns, >200mA (Io)	Standard Recovery >500ns, >200mA (Io)	Fast Recovery =< 500ns, >200mA (Io)
Reverse Recovery Time (trr)	1.5 µs	1.8 µs	75 ns
Current - Reverse Leakage @ Vr	5 µA @ 800 V	5 µA @ 800 V	5 µA @ 800 V
Capacitance @ Vr, F	6pF @ 4V, 1MHz	12pF @ 4V, 1MHz	10pF @ 4V, 1MHz
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA
Operating Temperature - Junction	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C

Engineering Selection Recommendations

The CS1K-E3/H part status is Obsolete. Both listed substitutes, S1K-E3/61T and US1KH, are classified as Active, with ROHS3 compliance and REACH Unaffected status. US1KH provides automotive-grade qualification (AEC-Q101). Selection can be based on product availability, compliance requirements, and certification needs. The substitutes meet the essential electrical and mechanical parameters as provided.

Frequently Asked Questions (FAQ)

Q1: What are the essential criteria for selecting a substitute for CS1K-E3/H?
Substitution requires matching voltage (800 V), rectified current (1A), mounting type (Surface Mount), package/case (DO-214AC, SMA), and operating temperature range (-55°C ~ 150°C). Recovery speed and leakage current must also align.

Q2: Are there any compliance considerations when selecting substitute diodes?
Both substitutes are ROHS3 compliant and REACH Unaffected. US1KH is qualified for automotive use under AEC-Q101.

Q3: Is package compatibility ensured among the substitute options?
All alternatives use the DO-214AC, SMA package for direct mechanical interchangeability in surface mount applications.

Q4: How do reverse recovery time and capacitance differ among the listed substitutes?
S1K-E3/61T offers similar recovery characteristics to the obsolete part. US1KH features a significantly faster reverse recovery time and automotive-grade reliability.

Q5: Can either substitute be used for the same operating temperature range as CS1K-E3/H?
Both S1K-E3/61T and US1KH operate within the same junction temperature range of -55°C ~ 150°C.

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