HS2KA Equivalent & Substitute Parts Reference

Part Overview

The HS2KA is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 800 V DC reverse voltage and 1.5 A average rectified current in a DO-214AC (SMA) surface mount package. This fast recovery diode features a reverse recovery time of 75 ns and forward voltage of 1.7 V at 1.5 A, making it suitable for high-frequency switching applications requiring rapid diode turn-off characteristics.

The HS2KA has been discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components that maintain functional compatibility within specified electrical and mechanical parameters. Substitute parts are available from multiple manufacturers with active product status and confirmed inventory availability.

Key Parameters

Parameter	HS2KA Value	Unit
Voltage - DC Reverse (Vr) (Max)	800	V
Current - Average Rectified (Io)	1.5	A
Voltage - Forward (Vf) (Max) @ If	1.7 @ 1.5 A	V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	75	ns
Current - Reverse Leakage @ Vr	5 @ 800 V	µA
Capacitance @ Vr, F	30 @ 4V, 1MHz	pF
Package / Case	DO-214AC, SMA	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the HS2KA are classified based on the following substitution criteria:

Parametric Equivalent (Direct Replacement): Parts that match all critical electrical parameters and package specifications. The HS2KA in Tape & Reel packaging is a parametric equivalent to the loose component version, maintaining identical electrical characteristics while differing only in packaging format.

Similar Parts (Reduced Current Rating): Parts rated for 800 V DC reverse voltage but with 1 A average rectified current (lower than the HS2KA's 1.5 A rating). These parts are suitable for applications where the full 1.5 A current capacity is not required. Substitution is valid when circuit design permits operation at the lower current rating.

Package Variants: Parts with identical electrical specifications but different surface mount packages (SMA vs. SMB). Package selection depends on PCB layout and thermal management requirements.

Recovery Speed Variants: Parts classified as Standard Recovery (>500 ns) versus Fast Recovery (≤500 ns). Recovery speed affects switching frequency capability and electromagnetic interference characteristics.

Automotive Grade Options: Parts with AEC-Q101 automotive qualification and automotive-grade designation. These are suitable for applications requiring automotive-level reliability and traceability.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V]	Speed	trr [ns]	Package	Temp Range [°C]	Product Status
HS2KA	Taiwan Semiconductor Corporation	800	1.5	1.7 @ 1.5 A	Fast Recovery ≤ 500ns	75	DO-214AC (SMA)	-55 to 150	Discontinued
HS2KA (TR)	Taiwan Semiconductor Corporation	800	1.5	1.7 @ 1.5 A	Fast Recovery ≤ 500ns	75	DO-214AC (SMA)	-55 to 150	Active
CGRA4006-G	Comchip Technology	800	1	1.1 @ 1 A	Fast Recovery ≤ 500ns	—	DO-214AC (SMA)	-55 to 150	Active
RS1K-13-F	Diodes Incorporated	800	1	1.3 @ 1 A	Fast Recovery ≤ 500ns	500	DO-214AC (SMA)	-65 to 150	Active
RS1KB-13-F	Diodes Incorporated	800	1	1.3 @ 1 A	Fast Recovery ≤ 500ns	500	DO-214AA (SMB)	-65 to 150	Active
RS1KHE3_A/H	Vishay General Semiconductor - Diodes Division	800	1	1.3 @ 1 A	Fast Recovery ≤ 500ns	500	DO-214AC (SMA)	-55 to 150	Active
RS1KHE3_A/I	Vishay General Semiconductor - Diodes Division	800	1	1.3 @ 1 A	Fast Recovery ≤ 500ns	500	DO-214AC (SMA)	-55 to 150	Active
S1K-13-F	Diodes Incorporated	800	1	1.1 @ 1 A	Standard Recovery >500ns	3000	DO-214AC (SMA)	-65 to 150	Active
S1KB-13-F	Diodes Incorporated	800	1	1.1 @ 1 A	Standard Recovery >500ns	3000	DO-214AA (SMB)	-65 to 150	Active
S1KHE3_A/H	Vishay General Semiconductor - Diodes Division	800	1	1.1 @ 1 A	Standard Recovery >500ns	1800	DO-214AC (SMA)	-55 to 150	Active
S1KHE3_A/I	Vishay General Semiconductor - Diodes Division	800	1	1.1 @ 1 A	Standard Recovery >500ns	1800	DO-214AC (SMA)	-55 to 150	Active

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): The HS2KA in Tape & Reel (TR) packaging is the direct parametric equivalent. This part maintains all electrical characteristics of the discontinued loose component version and is currently in active production status with substantial inventory availability (15,973 pcs).

For Current-Reduced Applications (1 A Rating): When circuit design permits operation at 1 A average rectified current instead of 1.5 A, the following parts are suitable substitutes:

CGRA4006-G (Comchip Technology) maintains fast recovery characteristics (≤500 ns) with lower forward voltage (1.1 V @ 1 A) and is available in the same DO-214AC package.

RS1K-13-F and RS1KHE3_A/H (Diodes Incorporated and Vishay, respectively) provide fast recovery operation with extended temperature range (-65°C minimum for Diodes Incorporated variants). RS1KHE3_A/H and RS1KHE3_A/I include AEC-Q101 automotive qualification.

For Standard Recovery Applications: S1K-13-F and S1KHE3_A/H are suitable when application switching frequency permits standard recovery operation (>500 ns). These parts offer lower forward voltage (1.1 V @ 1 A) and are available with automotive qualification (S1KHE3_A/H, S1KHE3_A/I).

For Package Variants: RS1KB-13-F and S1KB-13-F provide SMB package alternatives (DO-214AA) for applications requiring different thermal or layout characteristics while maintaining 800 V / 1 A electrical specifications.

Compliance Considerations: All listed substitute parts maintain ROHS3 compliance, MSL 1 (Unlimited) moisture sensitivity, and REACH unaffected status, matching the HS2KA's regulatory profile.

Frequently Asked Questions (FAQ)

Q: Can the HS2KA be directly replaced with a 1 A rated diode?

A: Direct replacement with 1 A rated parts is valid only when circuit design confirms that maximum current demand does not exceed 1 A. The HS2KA's 1.5 A rating provides additional current margin. If the application requires the full 1.5 A capacity, only the HS2KA (TR) parametric equivalent is suitable.

Q: What is the difference between Fast Recovery and Standard Recovery variants?

A: Fast Recovery diodes (≤500 ns reverse recovery time) are designed for high-frequency switching applications and exhibit lower switching losses. Standard Recovery diodes (>500 ns) are suitable for lower-frequency applications and typically exhibit lower forward voltage. The HS2KA is a Fast Recovery device; substitution with Standard Recovery parts (S1K series) is valid only when application frequency permits.

Q: Are automotive-qualified parts (AEC-Q101) interchangeable with non-automotive parts?

A: Automotive-qualified parts (RS1KHE3_A/H, RS1KHE3_A/I, S1KHE3_A/H, S1KHE3_A/I) meet additional reliability and traceability requirements. These parts are suitable for both automotive and general-purpose applications. Non-automotive parts are not recommended for automotive applications requiring AEC-Q101 qualification.

Q: What is the significance of package type (SMA vs. SMB)?

A: SMA (DO-214AC) and SMB (DO-214AA) are different surface mount package outlines. SMA is smaller and suitable for space-constrained layouts. SMB provides larger contact area and improved thermal dissipation. Package selection depends on PCB layout constraints and thermal management requirements. Parts are not interchangeable at the PCB level without layout modification.

Q: Can I use RS1K-13-F (500 ns recovery time) in place of HS2KA (75 ns recovery time)?

A: RS1K-13-F is suitable for applications where the slower recovery time (500 ns vs. 75 ns) does not compromise circuit performance. In high-frequency switching applications, the longer recovery time may increase switching losses and electromagnetic interference. Verify circuit performance requirements before substitution.

Q: What inventory considerations apply to these substitute parts?

A: HS2KA (TR) offers the highest inventory availability (15,973 pcs) and is the recommended first choice for direct replacement. S1K-13-F (215,900 pcs) and S1KHE3_A/I (14,707 pcs) provide substantial availability for 1 A rated alternatives. Comchip CGRA4006-G (724 pcs) and Vishay RS1KHE3_A/H (1,026 pcs) offer lower inventory levels.

Q: Are all substitute parts ROHS3 compliant?

A: Yes, all listed substitute parts maintain ROHS3 compliance, matching the HS2KA's regulatory status. All parts are also REACH unaffected and carry MSL 1 (Unlimited) moisture sensitivity classification.

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