BYW72-TR Equivalent & Substitute Parts

Part Overview

The BYW72-TR is an avalanche diode rated for 200 V DC reverse voltage and 3 A average rectified current, manufactured by Vishay General Semiconductor - Diodes Division. This component is packaged in SOD-64 axial configuration and supplied in Tape & Reel format. The part is classified as Active and fully compliant with RoHS3 and REACH regulations.

Equivalent and substitute parts are necessary when the original BYW72-TR becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when design flexibility demands selection from multiple qualified sources. Substitute parts must maintain electrical equivalence across critical parameters including reverse voltage rating, average rectified current, forward voltage characteristics, and recovery speed classification.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 3 A	V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	200	ns
Current - Reverse Leakage @ Vr	5	µA @ 200 V
Mounting Type	Through Hole	—
Package / Case	SOD-64, Axial	—
Operating Temperature - Junction	-55 to 175	°C
Technology	Avalanche	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the BYW72-TR is determined by strict equivalence across the following critical parameters:

Mandatory Equivalence Criteria:

Voltage - DC Reverse (Vr) (Max): 200 V
Current - Average Rectified (Io): 3 A
Mounting Type: Through Hole
RoHS3 Compliance: Required

Acceptable Variation Parameters:

Package format (SOD-64, DO-27, DO-201AD, Axial) — physical form factor may differ while maintaining electrical function
Reverse Recovery Time (trr) — fast recovery (≤ 500ns) and standard recovery (> 500ns) classifications both qualify
Forward Voltage (Vf) — minor variations within 50 mV acceptable (range: 950 mV to 1.1 V @ 3 A)
Reverse Leakage Current — acceptable range 5 µA to 10 µA @ 200 V
Operating Temperature Range — may extend beyond -55°C to 175°C specification
Technology Classification — both avalanche and standard diode technologies qualify

Non-Substitutable Parameters:

Reverse voltage rating must remain 200 V
Average rectified current must remain 3 A
Through-hole mounting is mandatory

Substitute parts are grouped by packaging format and technology type. Parts sharing identical electrical ratings but differing in package configuration or recovery speed classification are considered direct functional equivalents.

Parameter Comparison

Parameter	BYW72-TR (Main)	BYW72-TAP	1N5402-G	1N5402G	1N5402RLG	EGP30D
Manufacturer	Vishay	Vishay	Comchip	Taiwan Semiconductor	onsemi	onsemi
Voltage - DC Reverse (Vr) (Max)	200 V	200 V	200 V	200 V	200 V	200 V
Current - Average Rectified (Io)	3 A	3 A	3 A	3 A	3 A	3 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 3 A	1.1 V @ 3 A	1 V @ 3 A	1 V @ 3 A	1 V @ 3 A	950 mV @ 3 A
Speed Classification	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns	Standard Recovery > 500ns	Standard Recovery > 500ns	Standard Recovery > 500ns	Fast Recovery ≤ 500ns
Reverse Recovery Time (trr)	200 ns	200 ns	—	—	—	50 ns
Current - Reverse Leakage @ Vr	5 µA @ 200 V	5 µA @ 200 V	5 µA @ 200 V	5 µA @ 200 V	10 µA @ 200 V	5 µA @ 200 V
Package / Case	SOD-64, Axial	SOD-64, Axial	DO-201AD, Axial	DO-201AD, Axial	DO-201AA, DO-27, Axial	DO-201AD, Axial
Packaging Format	Tape & Reel (TR)	Cut Tape (CT)	Tape & Box (TB)	Tape & Reel (TR)	Cut Tape (CT)	Cut Tape (CT)
Operating Temperature - Junction	-55 to 175°C	-55 to 175°C	-65 to 125°C	-55 to 150°C	-65 to 150°C	-65 to 150°C
Technology	Avalanche	Avalanche	Standard	Standard	Standard	Standard
Product Status	Active	Active	Active	Active	Not For New Designs	Not For New Designs
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Active Product Status):

BYW72-TAP is the direct equivalent to BYW72-TR, differing only in packaging format (Cut Tape versus Tape & Reel). Both parts are manufactured by Vishay, share identical electrical specifications, and maintain Active product status. Selection between these two depends solely on manufacturing process requirements for tape format compatibility.

1N5402G (Taiwan Semiconductor Corporation) is an Active product offering equivalent voltage and current ratings with Tape & Reel packaging. This part operates across a wider temperature range (-55°C to 150°C) and features standard recovery speed classification. Forward voltage is reduced to 1 V @ 3 A, representing improved efficiency characteristics. This part is suitable for new designs requiring standard recovery diode performance.

1N5402-G (Comchip Technology) is an Active product with identical electrical ratings but packaged in Tape & Box format and DO-27 case style. Operating temperature range is limited to -65°C to 125°C. This part is suitable for applications where package format compatibility with existing assembly processes is required.

Secondary Substitutes (Not For New Designs):

1N5402RLG (onsemi) and EGP30D (onsemi) are classified as Not For New Designs. These parts maintain electrical equivalence but should not be selected for new circuit designs. Existing designs currently utilizing these parts may continue operation without modification.

Compliance and Certification:

All substitute parts listed maintain ROHS3 compliance and REACH Unaffected status, matching the regulatory posture of the BYW72-TR. All parts are classified under ECCN EAR99 and HTSUS 8541.10.0080.

Frequently Asked Questions (FAQ)

Q: Can BYW72-TAP be used as a direct replacement for BYW72-TR?

A: Yes. BYW72-TAP is electrically and functionally identical to BYW72-TR. The only difference is packaging format: BYW72-TR is supplied in Tape & Reel format while BYW72-TAP is supplied in Cut Tape format. Selection depends on compatibility with your manufacturing equipment and assembly process requirements.

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

A: Fast recovery diodes (BYW72-TR, BYW72-TAP, EGP30D) have reverse recovery time ≤ 500 ns, enabling faster switching and reduced switching losses in high-frequency applications. Standard recovery diodes (1N5402-G, 1N5402G, 1N5402RLG) have reverse recovery time > 500 ns and are suitable for lower-frequency rectification applications. Both classifications meet the 200 V / 3 A electrical requirements.

Q: Can I substitute a DO-27 packaged diode for an SOD-64 packaged diode?

A: Physical package substitution requires verification of PCB layout compatibility and lead spacing. While DO-27 and SOD-64 are both axial through-hole packages, their physical dimensions differ. Electrical function is equivalent, but mechanical fit must be confirmed before implementation.

Q: Why are some substitute parts marked "Not For New Designs"?

A: Parts designated "Not For New Designs" (1N5402RLG, EGP30D) are maintained by manufacturers for legacy design support and existing production continuity. These parts remain electrically qualified and fully functional. New circuit designs should prioritize Active status parts (BYW72-TAP, 1N5402G, 1N5402-G) to ensure long-term supply availability and manufacturer support.

Q: What is the significance of forward voltage differences (950 mV to 1.1 V)?

A: Forward voltage variation of 150 mV across the substitute group represents acceptable tolerance in rectifier diode performance. Lower forward voltage (EGP30D at 950 mV) results in reduced power dissipation and improved efficiency. Higher forward voltage (BYW72-TR, BYW72-TAP at 1.1 V) remains within acceptable rectification performance. Circuit design must account for this variation in power budget calculations.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All parts listed in this equivalency group maintain ROHS3 Compliant status and REACH Unaffected regulatory classification, ensuring compatibility with environmental and hazardous substance restrictions.

Q: What inventory considerations should influence part selection?

A: Inventory availability varies significantly across the substitute group. BYW72-TAP (13,015 pcs), EGP30D (25,400 pcs), and 1N5402G (2,110 pcs) offer substantial stock levels. BYW72-TR (1,060 pcs) and 1N5402-G (953 pcs) have more limited availability. Supply chain planning should account for these inventory levels when selecting between electrically equivalent options.

Q: Can reverse leakage current variation (5 µA to 10 µA) affect circuit performance?

A: Reverse leakage current variation of 5 µA is negligible in most rectification applications. The 1N5402RLG specification of 10 µA @ 200 V remains within acceptable limits for standard power supply and rectification circuits. High-impedance analog circuits or precision measurement applications should verify leakage specifications against circuit requirements.

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