UD1006LS-SB5 Equivalent & Substitute Parts

Part Overview

The UD1006LS-SB5 is a general-purpose fast recovery diode manufactured by onsemi, rated for 10A average rectified current at 600V reverse voltage in a through-hole TO-220-2 package. The part is classified as obsolete, making equivalent and substitute components necessary for ongoing design support and procurement continuity. This reference provides direct electrical and mechanical equivalents from active manufacturers suitable for applications requiring 10A rectification capability with fast recovery characteristics.

Key Parameters

Parameter	UD1006LS-SB5 Value
Manufacturer	onsemi
Category	Diodes, Rectifiers
Current - Average Rectified (Io)	10A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 10 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	150 ns
Current - Reverse Leakage @ Vr	20 µA @ 600 V
Mounting Type	Through Hole
Package / Case	TO-220-2 Full Pack
Operating Temperature - Junction (Max)	150°C
Product Status	Obsolete
Technology	Standard
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the UD1006LS-SB5 is determined by the following critical parameters:

Primary Substitution Criteria:

Current - Average Rectified (Io): 10A minimum
Voltage - Forward (Vf) (Max) @ If: 1.3 V or lower at rated current
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr): 150 ns or lower
Mounting Type: Through Hole
Package / Case: TO-220-2 or TO-220-2 Full Pack
Operating Temperature - Junction: 150°C or higher

Substitute Categories:

Category A - Direct Current Rating Match (10A): RFNL10TJ6SGC9 and VS-10ETF06FP-M3 provide identical 10A current ratings with matching forward voltage and fast recovery characteristics. These parts are active products with full compliance certifications.

Category B - Higher Current Rating (≥10A): RFNL15TJ6SGC9, RFNL20TJ6SGC9, RFV15TJ6SGC9, and RFV12TJ6SGC9 exceed the 10A requirement and are suitable for applications where higher current capacity provides design margin. These parts maintain fast recovery speed and compatible package configurations.

Category C - Lower Current Rating (5A-8A): RFNL5TJ6SGC9, RFV8TJ6SGC9, and RFVS8TJ6SGC9 provide reduced current ratings. These are suitable only for applications where the actual circuit current requirement is lower than the original 10A specification.

All substitute parts maintain through-hole mounting in TO-220-2 package variants and operate within the 150°C junction temperature range.

Parameter Comparison

Part Number	Manufacturer	Io (A)	Vf (Max) @ If (V)	trr (ns)	Vr (Max) (V)	Ir @ Vr (µA)	Package	Product Status	RoHS Status
UD1006LS-SB5	onsemi	10	1.3 @ 10A	150	600	20 @ 600V	TO-220-2 Full Pack	Obsolete	Not Specified
RFNL10TJ6SGC9	Rohm Semiconductor	10	1.3 @ 10A	150	600	10 @ 600V	TO-220ACFP	Active	ROHS3 Compliant
RFNL15TJ6SGC9	Rohm Semiconductor	15	1.3 @ 15A	160	600	10 @ 600V	TO-220ACFP	Active	ROHS3 Compliant
RFNL20TJ6SGC9	Rohm Semiconductor	20	1.3 @ 20A	180	600	10 @ 600V	TO-220ACFP	Active	ROHS3 Compliant
RFNL5TJ6SGC9	Rohm Semiconductor	5	1.3 @ 5A	130	600	10 @ 600V	TO-220ACFP	Active	ROHS3 Compliant
RFV12TJ6SGC9	Rohm Semiconductor	12	2.8 @ 12A	45	600	10 @ 600V	TO-220ACFP	Active	ROHS3 Compliant
RFV15TJ6SGC9	Rohm Semiconductor	15	2.8 @ 15A	50	600	10 @ 600V	TO-220ACFP	Active	ROHS3 Compliant
RFV8TJ6SGC9	Rohm Semiconductor	8	2.8 @ 8A	45	600	10 @ 600V	TO-220ACFP	Active	ROHS3 Compliant
RFVS8TJ6SGC9	Rohm Semiconductor	8	3.0 @ 8A	40	600	10 @ 600V	TO-220ACFP	Active	ROHS3 Compliant
VS-10ETF06FP-M3	Vishay General Semiconductor - Diodes Division	10	1.2 @ 10A	200	600	100 @ 200V	TO-220-2 Full Pack	Active	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications):

RFNL10TJ6SGC9 is the primary equivalent for UD1006LS-SB5. This Rohm Semiconductor part matches the 10A current rating, 1.3V forward voltage at 10A, and 150ns reverse recovery time. The part is active with ROHS3 compliance and unlimited moisture sensitivity rating. Inventory availability is 5400 units.

VS-10ETF06FP-M3 from Vishay provides an alternative direct replacement with identical 10A rating and matching TO-220-2 Full Pack configuration. This part offers slightly lower forward voltage (1.2V @ 10A) and is also ROHS3 compliant with active product status.

For Applications Requiring Higher Current Margin:

RFNL15TJ6SGC9 and RFNL20TJ6SGC9 provide 15A and 20A ratings respectively while maintaining 1.3V forward voltage characteristics. These parts are suitable for designs where thermal or reliability margins justify higher current capacity. Both are active products with ROHS3 compliance.

For Applications with Lower Actual Current Requirements:

RFNL5TJ6SGC9 is suitable for circuits operating below 5A. This part maintains the 1.3V forward voltage profile and fast recovery characteristics with 130ns reverse recovery time.

Compliance and Certification Status:

All recommended substitute parts carry ROHS3 compliance and REACH Unaffected status. The UD1006LS-SB5 obsolete status necessitates transition to active alternatives. All substitute parts are classified as active products with established supply chains.

Frequently Asked Questions (FAQ)

Q: Can RFNL10TJ6SGC9 directly replace UD1006LS-SB5 in existing designs?

A: Yes. RFNL10TJ6SGC9 matches the critical electrical parameters: 10A average rectified current, 1.3V forward voltage at 10A, 150ns reverse recovery time, and 600V reverse voltage rating. Both parts use through-hole TO-220 package configurations. No circuit modifications are required.

Q: What is the difference between RFNL and RFV series parts?

A: The RFNL series maintains forward voltage at 1.3V across current ratings. The RFV series exhibits higher forward voltage (2.8V to 3.0V) but provides faster reverse recovery times (40-50ns versus 130-180ns). Selection depends on whether the application prioritizes lower forward voltage drop or faster switching recovery.

Q: Why do some substitute parts have higher current ratings than 10A?

A: Higher current-rated parts (15A, 20A) are suitable substitutes because they meet or exceed the original 10A requirement. These parts provide additional thermal and electrical margin for applications where design safety factors justify the higher rating. The forward voltage and recovery time characteristics remain compatible.

Q: Is VS-10ETF06FP-M3 equivalent to RFNL10TJ6SGC9?

A: Both parts are direct 10A equivalents with matching current ratings and package types. VS-10ETF06FP-M3 offers slightly lower forward voltage (1.2V versus 1.3V) and longer reverse recovery time (200ns versus 150ns). Selection between these parts depends on specific circuit requirements for voltage drop and switching speed.

Q: Can RFNL5TJ6SGC9 be used in place of UD1006LS-SB5?

A: RFNL5TJ6SGC9 is suitable only if the actual circuit current requirement is 5A or lower. This part is not a direct replacement for 10A applications. Using an undersized current rating may result in excessive junction temperature and reduced component reliability.

Q: What is the significance of the TO-220ACFP package designation?

A: TO-220ACFP is a variant of the standard TO-220-2 package used by Rohm Semiconductor. The package maintains mechanical and electrical compatibility with the original UD1006LS-SB5 TO-220-2 Full Pack configuration. Pin assignments and mounting hole spacing are identical.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All recommended substitute parts carry ROHS3 compliance certification. The UD1006LS-SB5 RoHS status was not specified in the original documentation. All active substitute alternatives meet current environmental compliance requirements.

Q: What is the moisture sensitivity level (MSL) difference between parts?

A: RFNL10TJ6SGC9, RFNL20TJ6SGC9, RFV8TJ6SGC9, RFVS8TJ6SGC9, and VS-10ETF06FP-M3 carry MSL 1 (Unlimited), matching the original UD1006LS-SB5. RFNL15TJ6SGC9 and RFV15TJ6SGC9 carry MSL 3 (168 Hours), requiring controlled storage conditions. MSL 1 parts are preferred for applications without strict moisture control requirements.

Q: How does reverse leakage current affect substitution?

A: The UD1006LS-SB5 specifies 20µA @ 600V reverse leakage. Most Rohm substitutes specify 10µA @ 600V, representing lower leakage. VS-10ETF06FP-M3 specifies 100µA @ 200V, measured at a different voltage. Lower reverse leakage improves efficiency in low-current standby conditions. Higher leakage does not prevent substitution in most applications.

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