STTH2L06RL Equivalent & Substitute Parts

Part Overview

The STTH2L06RL is a general-purpose rectifier diode manufactured by STMicroelectronics, rated for 600 V DC reverse voltage and 2 A average rectified current in a DO-41 through-hole axial package. This part is classified as obsolete, necessitating identification of active equivalent and substitute components for new designs and production continuity. Equivalent parts maintain identical electrical specifications, while substitute parts provide functional alternatives with acceptable parameter variations within the same application category.

Key Parameters

Parameter	Value	Specification
Voltage - DC Reverse (Vr) (Max)	600 V	Primary voltage rating
Current - Average Rectified (Io)	2 A	Primary current rating
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 2 A	Forward conduction characteristic
Reverse Recovery Time (trr)	85 ns	Fast recovery classification
Current - Reverse Leakage @ Vr	2 µA @ 600 V	Leakage current specification
Mounting Type	Through Hole	Physical installation method
Package / Case	DO-204AL, DO-41, Axial	Physical form factor
Operating Temperature - Junction (Max)	175°C	Maximum thermal rating
Technology	Standard	Diode type classification
RoHS Status	ROHS3 Compliant	Environmental compliance

Substitute Part Grouping Explanation

Substitution of the STTH2L06RL is determined by the following critical parameters:

Voltage Rating: All substitute parts must maintain 600 V DC reverse voltage specification to ensure circuit protection and reliability.

Current Rating: Substitute parts must support minimum 2 A average rectified current. Parts with lower current ratings (such as 1.2 A) are classified as similar but not direct substitutes.

Package Type: The main part uses DO-41 axial through-hole packaging. Substitute parts may use alternative through-hole axial packages (DO-15, SOD-57) provided mechanical fit and electrical performance remain compatible with the application.

Recovery Characteristics: The STTH2L06RL is classified as fast recovery (≤500 ns, >200 mA). Substitute parts may include standard recovery devices (>500 ns) where application timing requirements permit.

Forward Voltage: Substitute parts with forward voltage specifications between 1.0 V and 1.7 V @ 2 A are acceptable, as this range reflects normal manufacturing variation across rectifier diode families.

Reverse Leakage: Substitute parts with reverse leakage current between 2 µA and 5 µA @ 600 V are functionally equivalent for general-purpose rectification applications.

Compliance: All substitute parts must maintain ROHS3 compliance and active product status for production availability.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	trr (ns)	Ir @ Vr	Package	Status
STTH2L06RL	STMicroelectronics	600 V	2 A	1.3 V @ 2 A	85	2 µA @ 600 V	DO-41	Obsolete
STTH2L06	STMicroelectronics	600 V	2 A	1.3 V @ 2 A	85	2 µA @ 600 V	DO-41	Active
1N6622	Microchip Technology	600 V	1.2 A	1.4 V @ 1.2 A	45	500 nA @ 600 V	A, Axial	Active
BYV27-600-TAP	Vishay General Semiconductor	600 V	2 A	1.35 V @ 3 A	250	5 µA @ 600 V	SOD-57	Active
EGP20J	Fairchild Semiconductor	600 V	2 A	1.7 V @ 2 A	75	5 µA @ 600 V	DO-15	Active
FR205GP-AP	Micro Commercial Co	600 V	2 A	1.3 V @ 2 A	250	5 µA @ 600 V	DO-15	Active
FR205GP-TP	Micro Commercial Co	600 V	2 A	1.3 V @ 2 A	250	5 µA @ 600 V	DO-15	Active
GPP20J-E3/54	Vishay General Semiconductor	600 V	2 A	1.1 V @ 2 A	Not specified	5 µA @ 600 V	DO-15	Active
GPP20J-E3/73	Vishay General Semiconductor	600 V	2 A	1.1 V @ 2 A	Not specified	5 µA @ 600 V	DO-15	Active
RL205GP-AP	Micro Commercial Co	600 V	2 A	1.0 V @ 2 A	Not specified	5 µA @ 600 V	DO-15	Active
RL205GP-BP	Micro Commercial Co	600 V	2 A	1.0 V @ 2 A	Not specified	DO-15	Active

Engineering Selection Recommendations

Parametric Equivalent (Direct Replacement):

STTH2L06 is the active equivalent of STTH2L06RL. Both parts are manufactured by STMicroelectronics with identical electrical specifications: 600 V reverse voltage, 2 A average rectified current, 1.3 V forward voltage @ 2 A, and 85 ns reverse recovery time. The primary difference is packaging format (Cut Tape versus Tape & Reel) and product status (Active versus Obsolete). STTH2L06 is recommended as the primary replacement for new production and design updates.

Functional Substitutes (600 V, 2 A Rating):

The following parts maintain the 600 V reverse voltage and 2 A current specifications with acceptable parameter variations:

FR205GP-AP, FR205GP-TP, GPP20J-E3/54, GPP20J-E3/73, RL205GP-AP, and RL205GP-BP all provide 600 V / 2 A performance in DO-15 through-hole axial packages. These parts differ in forward voltage (1.0 V to 1.7 V @ 2 A) and recovery characteristics (standard recovery >500 ns). All are ROHS3 compliant and active products.

BYV27-600-TAP is an avalanche-rated diode with 600 V / 2 A specifications in SOD-57 package. This part features 250 ns recovery time and is suitable for applications requiring avalanche protection.

Limited Current Substitute:

1N6622 (Microchip Technology) provides 600 V reverse voltage but is rated for 1.2 A average rectified current. This part is suitable only for applications where the circuit current requirement does not exceed 1.2 A. Forward voltage is 1.4 V @ 1.2 A with 45 ns recovery time.

Compliance and Availability:

All recommended substitute parts maintain ROHS3 compliance and REACH unaffected status. All are classified as active products with current manufacturing and distribution availability.

Frequently Asked Questions (FAQ)

Q: Can STTH2L06 directly replace STTH2L06RL in existing designs?

A: Yes. STTH2L06 is the parametric equivalent with identical electrical specifications. The only difference is packaging format (Cut Tape versus Tape & Reel). Both parts are manufactured by STMicroelectronics and maintain the same 600 V / 2 A rating, forward voltage, and recovery characteristics.

Q: What is the difference between fast recovery and standard recovery diodes in this product group?

A: Fast recovery diodes (STTH2L06, STTH2L06RL, EGP20J, FR205GP series) have reverse recovery times ≤500 ns, suitable for high-frequency switching applications. Standard recovery diodes (GPP20J series, RL205GP series) have recovery times >500 ns and are suitable for general-purpose rectification at lower switching frequencies. The STTH2L06RL specifies 85 ns recovery time.

Q: Are DO-15 package diodes compatible with DO-41 package applications?

A: DO-15 and DO-41 are both through-hole axial packages with different physical dimensions. Mechanical compatibility depends on the PCB layout and component spacing. Electrically, both packages support the same through-hole mounting method. Verify PCB footprint compatibility before substitution.

Q: Can I use RL205GP-BP (1.0 V forward voltage) instead of STTH2L06RL (1.3 V forward voltage)?

A: Yes, for general-purpose rectification. The lower forward voltage of RL205GP-BP (1.0 V @ 2 A) results in reduced power dissipation compared to STTH2L06RL (1.3 V @ 2 A). Both parts maintain 600 V reverse voltage and 2 A current rating. Verify that the application circuit does not depend on the specific forward voltage characteristic.

Q: Why is 1N6622 listed as a similar part but not a direct substitute?

A: 1N6622 is rated for 1.2 A average rectified current, which is below the 2 A specification of STTH2L06RL. This part is suitable only for applications where the circuit current requirement does not exceed 1.2 A. For circuits requiring full 2 A capacity, use parts rated for 2 A or higher.

Q: What does ROHS3 compliance mean for this diode?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials. All recommended substitute parts maintain ROHS3 compliance for environmental and regulatory compliance in manufacturing and end-use applications.

Q: Are there packaging differences between the substitute parts?

A: Yes. STTH2L06RL and STTH2L06 use DO-41 package. FR205GP-AP, FR205GP-TP, GPP20J series, and RL205GP series use DO-15 package. BYV27-600-TAP uses SOD-57 package. All are through-hole axial packages. Verify PCB footprint compatibility for your specific application before selection.

Q: What is the significance of reverse leakage current in rectifier diode selection?

A: Reverse leakage current (Ir) represents the small current flowing through the diode when reverse-biased. STTH2L06RL specifies 2 µA @ 600 V. Substitute parts range from 500 nA (1N6622) to 5 µA (BYV27-600-TAP, EGP20J, FR205GP series, GPP20J series, RL205GP series). Lower leakage current reduces standby power consumption and heat generation in reverse-biased conditions.

Q: Can BYV27-600-TAP (avalanche diode) be used in place of STTH2L06RL (standard diode)?

A: Yes, for general-purpose rectification. BYV27-600-TAP is an avalanche-rated diode with identical 600 V / 2 A specifications. Avalanche diodes provide additional protection against voltage transients and reverse overvoltage conditions. The 250 ns recovery time is slower than STTH2L06RL (85 ns), suitable for lower-frequency applications.

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