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MBRS3100T3 Equivalent & Substitute Parts
Part Overview
The MBRS3100T3 is a Schottky rectifier diode rated for 100 V DC reverse voltage and 3 A average rectified current in a surface mount SMC (DO-214AB) package. This part is classified as obsolete, making equivalent and substitute components necessary for new designs and ongoing production requirements. The MBRS3100T3 features fast recovery characteristics with a maximum forward voltage of 790 mV at 3 A and operates across a junction temperature range of -65°C to 175°C.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Voltage - DC Reverse (Vr) (Max) | 100 | V |
| Current - Average Rectified (Io) | 3 | A |
| Voltage - Forward (Vf) (Max) @ If | 790 mV @ 3 A | mV |
| Speed | Fast Recovery ≤ 500ns, > 200mA (Io) | ns |
| Current - Reverse Leakage @ Vr | 50 | µA @ 100 V |
| Mounting Type | Surface Mount | |
| Package / Case | DO-214AB, SMC | |
| Operating Temperature - Junction | -65 to 175 | °C |
| Technology | Schottky | |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution of the MBRS3100T3 is determined by strict equivalence across the following critical parameters:
Primary Equivalence Criteria:
- Voltage - DC Reverse (Vr) (Max): 100 V
- Current - Average Rectified (Io): 3 A
- Voltage - Forward (Vf) (Max) @ If: 790 mV @ 3 A
- Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
- Mounting Type: Surface Mount
- Package / Case: DO-214AB, SMC
- Technology: Schottky
Direct Manufacturer Equivalent: The MBRS3100T3G from onsemi is a direct equivalent with identical electrical specifications and active product status. This part differs only in packaging format (Cut Tape & Digi-Reel) and RoHS compliance status (ROHS3 Compliant vs. non-compliant).
Parametric Equivalents: Parts meeting all primary equivalence criteria with minor variations in reverse leakage current or operating temperature range are classified as parametric equivalents. These include the NRVBS3100T3G (onsemi), B3100-13-F (Diodes Incorporated), and B3100Q-13-F (Diodes Incorporated).
Similar Alternatives: Parts with matching voltage and current ratings but variations in forward voltage, reverse leakage, or operating temperature are classified as similar alternatives. These include S310 (Fairchild Semiconductor), SK310-TP (Micro Commercial Co), and 30BQ100 (Vishay).
Non-Equivalent Parts: B390-13-F (90 V rating) and HSM5100J/TR13 and HSM8100J/TR13 (higher current ratings) do not meet primary equivalence criteria and are listed for reference only.
Parameter Comparison
| Part Number | Manufacturer | Vr (Max) [V] | Io [A] | Vf (Max) @ If [mV] | Reverse Leakage @ Vr [µA] | Tj (°C) | Product Status | RoHS Status |
|---|---|---|---|---|---|---|---|---|
| MBRS3100T3 | onsemi | 100 | 3 | 790 @ 3A | 50 @ 100V | -65 to 175 | Obsolete | Non-compliant |
| MBRS3100T3G | onsemi | 100 | 3 | 790 @ 3A | 50 @ 100V | -65 to 175 | Active | ROHS3 Compliant |
| NRVBS3100T3G | onsemi | 100 | 3 | 790 @ 3A | 50 @ 100V | -65 to 175 | Active | ROHS3 Compliant |
| B3100-13-F | Diodes Incorporated | 100 | 3 | 790 @ 3A | 500 @ 100V | -55 to 125 | Active | ROHS3 Compliant |
| B3100Q-13-F | Diodes Incorporated | 100 | 3 | 790 @ 3A | 500 @ 100V | -55 to 125 | Active | ROHS3 Compliant |
| S310 | Fairchild Semiconductor | 100 | 3 | 850 @ 3A | 500 @ 100V | -55 to 150 | Active | Not specified |
| SK310-TP | Micro Commercial Co | 100 | 3 | 850 @ 3A | 500 @ 100V | -55 to 150 | Active | ROHS3 Compliant |
| 30BQ100 | Vishay General Semiconductor | 100 | 3 | 790 @ 3A | 500 @ 100V | -55 to 175 | Obsolete | Non-compliant |
| B390-13-F | Diodes Incorporated | 90 | 3 | 790 @ 3A | 500 @ 90V | -55 to 125 | Active | ROHS3 Compliant |
| HSM5100J/TR13 | Microchip Technology | 100 | 5 | 800 @ 5A | 250 @ 100V | -55 to 175 | Active | Non-compliant |
| HSM8100J/TR13 | Microchip Technology | 100 | 8 | 780 @ 8A | 500 @ 100V | -55 to 175 | Active | Non-compliant |
Engineering Selection Recommendations
Primary Recommendation: MBRS3100T3G
The MBRS3100T3G from onsemi is the direct manufacturer equivalent with identical electrical specifications to the obsolete MBRS3100T3. This part is active in production, ROHS3 compliant, and available in Cut Tape and Digi-Reel packaging formats. Selection of MBRS3100T3G eliminates obsolescence risk and provides regulatory compliance for new designs.
Secondary Recommendation: NRVBS3100T3G
The NRVBS3100T3G from onsemi provides parametric equivalence with identical electrical performance to the MBRS3100T3. This part is active, ROHS3 compliant, and suitable for applications requiring the full -65°C to 175°C operating temperature range.
Tertiary Recommendations: B3100-13-F and B3100Q-13-F
The B3100-13-F and B3100Q-13-F from Diodes Incorporated meet primary equivalence criteria with matching voltage, current, and forward voltage specifications. Both parts are active and ROHS3 compliant. The B3100Q-13-F includes AEC-Q101 automotive qualification. Operating temperature range is reduced to -55°C to 125°C. These parts are suitable for applications not requiring the extended low-temperature performance of the original part.
Alternative Selections: S310 and SK310-TP
The S310 (Fairchild Semiconductor) and SK310-TP (Micro Commercial Co) provide functional equivalence with 100 V and 3 A ratings. Forward voltage is specified at 850 mV versus 790 mV for the original part, representing a 60 mV increase. Reverse leakage current is 500 µA versus 50 µA for the original part. These parts are suitable for applications with relaxed forward voltage and leakage specifications.
Obsolete Alternative: 30BQ100
The 30BQ100 from Vishay General Semiconductor is classified as obsolete and is not recommended for new designs despite matching electrical specifications.
Non-Equivalent Parts:
The B390-13-F (90 V rating) is not suitable as a direct substitute due to reduced reverse voltage rating. The HSM5100J/TR13 (5 A) and HSM8100J/TR13 (8 A) are higher current variants and do not meet the 3 A specification of the original part.
Frequently Asked Questions (FAQ)
Q: Can MBRS3100T3G be used as a direct replacement for MBRS3100T3?
A: Yes. The MBRS3100T3G is a direct manufacturer equivalent with identical electrical specifications. The primary differences are packaging format and RoHS compliance status. MBRS3100T3G is active in production and recommended for all new designs.
Q: What is the difference between MBRS3100T3G and NRVBS3100T3G?
A: Both parts are onsemi products with identical electrical specifications and operating temperature ranges. The primary difference is the base product number designation. Both are active, ROHS3 compliant, and suitable for direct substitution.
Q: Can B3100-13-F be used in place of MBRS3100T3?
A: B3100-13-F meets the primary equivalence criteria for voltage, current, and forward voltage. The operating temperature range is reduced from -65°C to 175°C to -55°C to 125°C. This part is suitable for applications not requiring extended low-temperature operation. Reverse leakage current is higher at 500 µA versus 50 µA.
Q: What is the significance of the forward voltage difference between MBRS3100T3 (790 mV) and S310 (850 mV)?
A: The 60 mV difference represents approximately 7.6% higher forward voltage drop in the S310. This results in increased power dissipation in high-current applications. Selection of S310 is appropriate only when circuit design accommodates the higher forward voltage specification.
Q: Why is reverse leakage current higher in some substitute parts?
A: Reverse leakage current varies with manufacturing process and device design. The MBRS3100T3 specifies 50 µA at 100 V, while alternatives such as B3100-13-F and S310 specify 500 µA. Higher leakage current increases standby power consumption and heat generation. Selection should be based on application requirements.
Q: Is B390-13-F a suitable substitute?
A: No. The B390-13-F is rated for 90 V maximum reverse voltage, which is 10 V below the 100 V specification of MBRS3100T3. This part is not suitable for applications requiring the full 100 V rating.
Q: What packaging formats are available for substitute parts?
A: Substitute parts are available in multiple packaging formats including Cut Tape (CT), Digi-Reel, and Tape & Reel (TR). All parts maintain the DO-214AB SMC surface mount package. Packaging selection depends on production volume and assembly requirements.
Q: Are higher current alternatives such as HSM5100J/TR13 suitable substitutes?
A: No. Higher current rated parts such as HSM5100J/TR13 (5 A) and HSM8100J/TR13 (8 A) do not meet the 3 A specification of the original part. These parts are not direct substitutes and are listed for reference only.
Q: What RoHS compliance status should be selected for new designs?
A: ROHS3 compliant parts are recommended for new designs. MBRS3100T3G, NRVBS3100T3G, B3100-13-F, B3100Q-13-F, and SK310-TP all meet ROHS3 compliance requirements.
Q: Can the MBRS3100T3 be used in automotive applications?
A: The MBRS3100T3 does not include automotive qualification. The B3100Q-13-F from Diodes Incorporated includes AEC-Q101 automotive qualification and is suitable for automotive applications requiring equivalent electrical specifications.
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