UGF12JDHC0G Equivalent & Substitute Parts

Part Overview

The UGF12JDHC0G is a general-purpose rectifier diode rated for 600 V DC reverse voltage and 12 A average rectified current in a through-hole TO-220-2 package. Manufactured by Taiwan Semiconductor Corporation, this component is qualified to AEC-Q101 automotive standards and features fast recovery characteristics with a 45 ns reverse recovery time.

The UGF12JDHC0G has been discontinued at DiGi Electronics. Equivalent and substitute parts are available to maintain design continuity and ensure supply chain availability for applications requiring 600 V rectification at 12 A or lower current ratings.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	V
Current - Average Rectified (Io)	12	A
Voltage - Forward (Vf) (Max) @ If	3.1 @ 12 A	V
Reverse Recovery Time (trr)	45	ns
Current - Reverse Leakage @ Vr	500 nA @ 600 V	nA
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Mounting Type	Through Hole	—
Package / Case	TO-220-2 Full Pack	—
Operating Temperature - Junction	-55 to 175	°C
Grade	Automotive	—
Qualification	AEC-Q101	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the UGF12JDHC0G is determined by the following critical parameters:

Voltage Rating: All substitute parts must maintain the 600 V DC reverse voltage specification to ensure safe operation in the intended application.

Current Rating: Substitute parts are grouped by average rectified current capacity. Direct equivalents maintain the 12 A rating. Similar substitutes with lower current ratings (5 A or 10 A) are suitable only for applications where the circuit design permits reduced current handling.

Package and Mounting: All listed substitutes use through-hole mounting in TO-220-2 or compatible package configurations, ensuring mechanical and thermal compatibility with the original design.

Speed Classification: All substitutes are classified as fast recovery diodes with reverse recovery times ≤ 500 ns, maintaining switching performance characteristics.

Compliance and Certification: Substitutes maintain ROHS3 compliance and automotive-grade qualification where applicable, ensuring regulatory and quality standards alignment.

Parameter Comparison

Parameter	UGF12JDHC0G	UGF12JDH	UGF12JD	RFX10TF6S	RFNL5TJ6SGC9
Manufacturer	Taiwan Semiconductor	Taiwan Semiconductor	Taiwan Semiconductor	Rohm Semiconductor	Rohm Semiconductor
Voltage - DC Reverse (Vr) (Max)	600 V	600 V	600 V	600 V	600 V
Current - Average Rectified (Io)	12 A	12 A	12 A	10 A	5 A
Voltage - Forward (Vf) (Max) @ If	3.1 V @ 12 A	3.1 V @ 12 A	3.1 V @ 12 A	2.5 V @ 10 A	1.3 V @ 5 A
Reverse Recovery Time (trr)	45 ns	45 ns	45 ns	30 ns	130 ns
Current - Reverse Leakage @ Vr	500 nA @ 600 V	500 nA @ 600 V	500 nA @ 600 V	10 µA @ 600 V	10 µA @ 600 V
Speed Classification	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	TO-220-2	TO-220-2	TO-220-2	TO-220-2	TO-220-2
Operating Temperature - Junction (Max)	175°C	175°C	175°C	150°C	150°C
Product Status	Discontinued	Active	Active	Not For New Designs	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Direct Equivalents (Recommended Primary Substitutes):

UGF12JDH and UGF12JD are direct parametric equivalents to the UGF12JDHC0G. Both parts maintain identical electrical specifications including 600 V reverse voltage, 12 A average rectified current, 3.1 V forward voltage at 12 A, and 45 ns reverse recovery time. Both are manufactured by Taiwan Semiconductor Corporation and carry ROHS3 compliance. UGF12JDH is currently in active product status with 1854 units in stock, while UGF12JD is also active with 1726 units available. These parts are suitable for direct replacement without circuit modification.

Similar Substitutes (Current-Reduced Applications):

RFX10TF6S is a 10 A rated diode suitable for applications where circuit design permits reduced current handling below the original 12 A specification. This Rohm Semiconductor part maintains 600 V reverse voltage and fast recovery characteristics with 30 ns reverse recovery time. However, RFX10TF6S carries a "Not For New Designs" product status designation.

RFNL5TJ6SGC9 is a 5 A rated diode suitable only for applications with significantly reduced current requirements. This part is manufactured by Rohm Semiconductor, maintains 600 V reverse voltage, and is in active product status. The reverse recovery time of 130 ns is longer than the original specification.

Compliance Considerations:

All listed substitutes maintain ROHS3 compliance and are suitable for applications requiring environmental regulatory adherence. The original UGF12JDHC0G carries automotive-grade qualification (AEC-Q101). Direct equivalents UGF12JDH and UGF12JD maintain this automotive qualification. Rohm Semiconductor substitutes do not list AEC-Q101 qualification in the provided specifications; verification of automotive suitability is required for automotive applications.

Temperature Operating Range:

The original UGF12JDHC0G and its direct equivalents support junction temperatures from -55°C to 175°C. Rohm Semiconductor substitutes (RFX10TF6S and RFNL5TJ6SGC9) are rated to a maximum junction temperature of 150°C, which may limit thermal performance in high-temperature applications.

Frequently Asked Questions (FAQ)

Q: Can UGF12JDH or UGF12JD be used as direct replacements for UGF12JDHC0G?

A: Yes. UGF12JDH and UGF12JD are direct parametric equivalents with identical voltage ratings (600 V), current ratings (12 A), forward voltage characteristics (3.1 V @ 12 A), and reverse recovery time (45 ns). Both are manufactured by Taiwan Semiconductor Corporation and maintain ROHS3 compliance. No circuit modification is required.

Q: What is the difference between UGF12JDH and UGF12JD?

A: Both parts are parametrically identical. The primary difference is packaging: UGF12JDH is supplied in tube packaging, while UGF12JD is also supplied in tube packaging. Both are in active product status with similar inventory availability.

Q: Can RFX10TF6S or RFNL5TJ6SGC9 be used as substitutes?

A: These parts are suitable only for applications where the circuit design permits reduced current handling. RFX10TF6S is rated for 10 A (versus 12 A), and RFNL5TJ6SGC9 is rated for 5 A. Both maintain the 600 V reverse voltage specification. Circuit analysis is required to confirm that the reduced current rating does not exceed application requirements. RFX10TF6S carries a "Not For New Designs" status.

Q: Are the Rohm Semiconductor substitutes automotive-qualified?

A: The provided specifications for RFX10TF6S and RFNL5TJ6SGC9 do not list AEC-Q101 automotive qualification. The original UGF12JDHC0G and its direct equivalents (UGF12JDH and UGF12JD) carry automotive-grade qualification. For automotive applications, direct equivalents are recommended.

Q: What is the maximum junction temperature for each substitute?

A: UGF12JDHC0G, UGF12JDH, and UGF12JD support -55°C to 175°C junction temperature range. RFX10TF6S and RFNL5TJ6SGC9 are rated to a maximum junction temperature of 150°C. Applications requiring operation above 150°C require the Taiwan Semiconductor parts.

Q: Are all substitutes RoHS compliant?

A: Yes. All listed parts (UGF12JDH, UGF12JD, RFX10TF6S, and RFNL5TJ6SGC9) are ROHS3 compliant and suitable for applications requiring environmental regulatory adherence.

Q: What is the reverse recovery time difference between substitutes?

A: UGF12JDHC0G, UGF12JDH, and UGF12JD all have 45 ns reverse recovery time. RFX10TF6S has 30 ns (faster), and RFNL5TJ6SGC9 has 130 ns (slower). Faster recovery times reduce switching losses in high-frequency applications.

Q: Can these diodes be used interchangeably in PCB layouts?

A: All listed parts use TO-220-2 package configuration with through-hole mounting, ensuring mechanical compatibility with existing PCB layouts. Thermal management considerations may differ due to current rating variations; thermal analysis is recommended for current-reduced substitutes.

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