FR1J-13-F Equivalent & Substitute Parts

Part Overview

The FR1J-13-F is a general-purpose rectifier diode manufactured by Diodes Incorporated, rated for 600 V DC reverse voltage and 1 A average rectified current in a surface mount SMB (DO-214AA) package. This part is classified as obsolete, which necessitates identification of active equivalent and substitute components for ongoing design support and procurement.

The FR1J-13-F features fast recovery characteristics with a reverse recovery time of 250 ns, forward voltage of 1.3 V at 1 A, and operates across a junction temperature range of -65°C to 175°C. RoHS3 compliance and unlimited moisture sensitivity level (MSL 1) support deployment in standard industrial and commercial applications.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.3 @ 1 A	V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	250	ns
Current - Reverse Leakage @ Vr	5 @ 600 V	µA
Mounting Type	Surface Mount	—
Package / Case	DO-214AA, SMB	—
Operating Temperature - Junction	-65 to 175	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the FR1J-13-F is determined by matching the following critical electrical and mechanical parameters:

Primary Matching Criteria:

Voltage - DC Reverse (Vr) (Max): 600 V
Current - Average Rectified (Io): 1 A (or higher current rating for uprated designs)
Package / Case: DO-214AA, SMB (or compatible surface mount package)
Mounting Type: Surface Mount
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)

Secondary Compatibility Factors:

Voltage - Forward (Vf) (Max) @ If: ≤ 1.7 V @ rated current
Reverse Recovery Time (trr): ≤ 250 ns (preferred for fast recovery applications)
Current - Reverse Leakage @ Vr: ≤ 5 µA @ 600 V
Operating Temperature - Junction: Minimum -50°C, Maximum ≥ 150°C
RoHS3 Compliance and MSL 1 rating

Substitute parts are grouped into three categories:

Category A - Direct Electrical Equivalents (1 A, 600 V, Fast Recovery): Parts with identical current rating, voltage rating, and fast recovery characteristics in compatible packages.

Category B - Uprated Current Equivalents (2-3 A, 600 V, Fast Recovery): Parts with higher current ratings suitable for applications requiring additional margin or higher load capacity while maintaining 600 V voltage rating and fast recovery performance.

Category C - Alternative Technology (1 A, 600 V, Standard Recovery): Parts with identical voltage and current ratings but standard recovery characteristics, applicable only where switching speed is not critical.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V]	Speed	trr [ns]	Ir @ Vr [µA]	Package	Tj (°C)	Status
FR1J-13-F	Diodes Incorporated	600	1	1.3 @ 1 A	Fast Recovery ≤ 500ns	250	5 @ 600 V	DO-214AA, SMB	-65 to 175	Obsolete
RS1JB-13-F	Diodes Incorporated	600	1	1.3 @ 1 A	Fast Recovery ≤ 500ns	250	5 @ 600 V	DO-214AA, SMB	-65 to 150	Active
FR1J	Diotec Semiconductor	600	1	1.3 @ 1 A	Fast Recovery ≤ 500ns	250	5 @ 600 V	DO-214AC, SMA	-50 to 150	Active
S1J-LTP	Micro Commercial Co	600	1	1.1 @ 1 A	Standard Recovery >500ns	2000	5 @ 600 V	DO-214AA, SMB	-55 to 150	Active
STTH1L06U	STMicroelectronics	600	1	1.3 @ 1 A	Fast Recovery ≤ 500ns	80	1 @ 600 V	DO-214AA, SMB	-40 to 175	Active
STTH1R06U	STMicroelectronics	600	1	1.7 @ 1 A	Fast Recovery ≤ 500ns	45	1 @ 600 V	DO-214AA, SMB	-40 to 175	Active
MURS260T3G	onsemi	600	2	1.45 @ 2 A	Fast Recovery ≤ 500ns	75	5 @ 600 V	DO-214AA, SMB	-65 to 175	Active
STTH2L06U	STMicroelectronics	600	2	1.3 @ 2 A	Fast Recovery ≤ 500ns	85	2 @ 600 V	DO-214AA, SMB	-40 to 175	Active
STTH2R06U	STMicroelectronics	600	2	1.7 @ 2 A	Fast Recovery ≤ 500ns	50	2 @ 600 V	DO-214AA, SMB	-40 to 175	Active
ES3JBH	Taiwan Semiconductor Corporation	600	3	1.45 @ 3 A	Fast Recovery ≤ 500ns	35	10 @ 600 V	DO-214AA, SMB	-55 to 150	Active
STTH3L06U	STMicroelectronics	600	3	1.3 @ 3 A	Fast Recovery ≤ 500ns	85	3 @ 600 V	DO-214AA, SMB	-40 to 175	Active

Engineering Selection Recommendations

Category A - Direct Electrical Equivalents (Recommended Primary Substitutes)

RS1JB-13-F (Diodes Incorporated) is the primary direct equivalent. This part maintains identical electrical specifications to the FR1J-13-F including 600 V reverse voltage, 1 A current rating, 1.3 V forward voltage, and 250 ns reverse recovery time. The part is active with full production support and RoHS3 compliance. The operating temperature range is -65°C to 150°C, which covers the lower end of the original -65°C to 175°C specification. Packaging is DO-214AA, SMB in Tape & Reel format with 15,400 units in stock.

STTH1L06U (STMicroelectronics) provides direct electrical equivalence with superior reverse recovery performance (80 ns versus 250 ns). This part is active with RoHS3 compliance and extended operating temperature to 175°C maximum. Forward voltage matches at 1.3 V @ 1 A. Reverse leakage is lower at 1 µA @ 600 V. Package is DO-214AA, SMB with 6,552 units in stock.

STTH1R06U (STMicroelectronics) maintains 600 V, 1 A ratings with fast recovery characteristics (45 ns reverse recovery time). Forward voltage is 1.7 V @ 1 A, which is within acceptable range for most applications. This part is active with RoHS3 compliance and 175°C maximum junction temperature. Reverse leakage is 1 µA @ 600 V. Stock availability is 81,530 units.

Category B - Uprated Current Equivalents (For Higher Load Applications)

MURS260T3G (onsemi) provides 2 A current rating at 600 V with fast recovery (75 ns). This part is suitable for applications requiring additional current margin. Forward voltage is 1.45 V @ 2 A. Operating temperature range is -65°C to 175°C, matching the original part's upper temperature capability. RoHS3 compliant with 60,400 units in stock.

STTH2L06U (STMicroelectronics) offers 2 A rating at 600 V with 1.3 V forward voltage @ 2 A and 85 ns reverse recovery time. Active status with RoHS3 compliance and 175°C maximum junction temperature. Stock availability is 35,300 units.

STTH3L06U (STMicroelectronics) provides 3 A rating at 600 V with 1.3 V forward voltage @ 3 A and 85 ns reverse recovery time. Active status with RoHS3 compliance and 175°C maximum junction temperature. Stock availability is 18,279 units.

ES3JBH (Taiwan Semiconductor Corporation) offers 3 A rating at 600 V with superior reverse recovery time of 35 ns. This part includes AEC-Q101 automotive qualification. Forward voltage is 1.45 V @ 3 A. Operating temperature range is -55°C to 150°C. RoHS3 compliant with 6,727 units in stock.

Category C - Alternative Technology (Standard Recovery)

S1J-LTP (Micro Commercial Co) maintains 600 V, 1 A ratings with standard recovery characteristics (2000 ns reverse recovery time). Forward voltage is lower at 1.1 V @ 1 A. This part is suitable only for applications where switching speed is not critical. Active status with RoHS3 compliance. Operating temperature range is -55°C to 150°C. Stock availability is 846 units.

Category D - Package Variant

FR1J (Diotec Semiconductor) provides identical electrical specifications (600 V, 1 A, 1.3 V forward voltage, 250 ns recovery time) but in DO-214AC, SMA package instead of DO-214AA, SMB. This part is active with RoHS3 compliance and 12,200 units in stock. Use only if PCB layout accommodates SMA package footprint.

Frequently Asked Questions (FAQ)

Q: Can RS1JB-13-F directly replace FR1J-13-F without circuit modification?

A: Yes. RS1JB-13-F is a direct electrical equivalent with identical voltage rating (600 V), current rating (1 A), forward voltage (1.3 V @ 1 A), and reverse recovery time (250 ns). Both use DO-214AA, SMB packaging. The operating temperature range of RS1JB-13-F (-65°C to 150°C) covers the lower portion of the original specification (-65°C to 175°C). For applications operating above 150°C junction temperature, STTH1L06U or STTH1R06U are required.

Q: What is the difference between fast recovery and standard recovery diodes?

A: Fast recovery diodes have reverse recovery times ≤ 500 ns and are designed for high-frequency switching applications. Standard recovery diodes have reverse recovery times > 500 ns and are suitable for lower-frequency rectification. The FR1J-13-F is a fast recovery device (250 ns). S1J-LTP is a standard recovery device (2000 ns). Substitution between these categories requires circuit analysis to confirm switching frequency compatibility.

Q: Can I use STTH2L06U (2 A) instead of FR1J-13-F (1 A)?

A: Yes, for applications where the circuit can accommodate higher current capacity. STTH2L06U maintains the same 600 V voltage rating and provides superior reverse recovery performance (85 ns versus 250 ns). Forward voltage is identical at 1.3 V @ rated current. This substitution provides design margin for future load increases. Verify that PCB trace sizing and thermal management are adequate for the higher current rating.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed are RoHS3 compliant. The original FR1J-13-F is also RoHS3 compliant. All parts maintain MSL 1 (Unlimited) moisture sensitivity level, supporting standard PCB assembly processes without special handling.

Q: What is the impact of forward voltage differences between substitute parts?

A: Forward voltage differences affect power dissipation and voltage drop across the diode. The FR1J-13-F has 1.3 V forward voltage @ 1 A. STTH1R06U has 1.7 V @ 1 A (0.4 V higher), while S1J-LTP has 1.1 V @ 1 A (0.2 V lower). For precision rectification circuits, verify that the power supply regulation and load characteristics accommodate the forward voltage variation. For general-purpose applications, these differences are typically acceptable.

Q: Can I substitute FR1J (Diotec, SMA package) for FR1J-13-F (Diodes, SMB package)?

A: Electrical substitution is valid. Both parts have identical 600 V, 1 A, 1.3 V forward voltage, and 250 ns reverse recovery specifications. However, DO-214AC (SMA) and DO-214AA (SMB) packages have different footprints. Substitution requires PCB layout modification. Verify that the SMA footprint is compatible with your PCB design before implementation.

Q: Which substitute part offers the best reverse recovery performance?

A: ES3JBH (Taiwan Semiconductor Corporation) offers the fastest reverse recovery time at 35 ns, followed by STTH1R06U at 45 ns. Both are significantly faster than the original FR1J-13-F at 250 ns. Faster recovery times reduce switching losses and electromagnetic interference in high-frequency applications. ES3JBH includes AEC-Q101 automotive qualification for applications requiring automotive-grade reliability.

Q: What is the maximum junction temperature difference between substitute parts?

A: The original FR1J-13-F operates to 175°C maximum junction temperature. RS1JB-13-F and S1J-LTP are rated to 150°C maximum. STTH1L06U, STTH1R06U, STTH2L06U, STTH2R06U, and STTH3L06U are rated to 175°C maximum. ES3JBH is rated to 150°C maximum. For applications operating near 175°C, select parts explicitly rated to 175°C maximum junction temperature.

Q: Is inventory availability a factor in part selection?

A: Yes. STTH1R06U has the highest inventory at 81,530 units, followed by MURS260T3G at 60,400 units. RS1JB-13-F has 15,400 units. S1J-LTP has the lowest inventory at 846 units. For high-volume production, prioritize parts with adequate stock levels to avoid supply chain delays.

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