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Vishay General Semiconductor - Diodes Division BYG21MHE3_A/H
- Part No.:
- BYG21MHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
BYG21MHE3_A/H.pdf
- Description:
- DIODE AVALANCHE 1KV 1.5A DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,813
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Product details
Overview
BYG21MHE3_A/H from Vishay General Semiconductor is a fast avalanche recovery SMD rectifier diode in SMA (DO-214AC) package, rated for 1000 V repetitive peak reverse voltage, 1.5 A average forward current, and 120 ns reverse recovery time. It features low reverse leakage (1.0 μA at 25 °C), soft recovery characteristic, and AEC-Q101 qualification for automotive-grade reliability in high-voltage switching applications.
For engineers reviewing the BYG21MHE3_A/H datasheet, BYG21MHE3_A/H pinout, BYG21MHE3_A/H application, or BYG21MHE3_A/H equivalent, this device is selected for fast-switching power supply rectification, freewheeling in DC-DC converters, and inverter output stages where low trr, high VRRM, and robust avalanche energy handling (20 mJ) are critical design requirements.
Technical Context
The BYG21MHE3_A/H implements a single-die, glass-passivated silicon junction optimized for fast, soft-recovery avalanche operation. Its 120 ns trr and 1.6 V VF at 1.5 A enable efficient high-frequency rectification while minimizing switching losses and EMI generation in SMPS topologies.
Thermally, it delivers RθJA of 150 °C/W on epoxy-glass PCB and supports continuous operation up to TJ = 150 °C. The SMA package enables automated placement and meets MSL Level 1 with 260 °C peak reflow per J-STD-020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - supports input rectification in 800 V AC line or 600 V DC bus systems without derating |
| IF(AV) | 1.5 A - sustains continuous conduction in medium-power SMPS and auxiliary supplies |
| trr | 120 ns - enables operation up to ~1 MHz switching frequency with controlled di/dt and low recovery overshoot |
| IR | 1.0 μA at 25 °C - ensures minimal standby power loss in high-impedance bias networks |
| ER | 20 mJ - withstands inductive turn-off transients in freewheeling and snubber circuits |
| TJ max. | 150 °C - allows operation in under-hood automotive environments and sealed industrial enclosures |
| RθJL | 25 °C/W - enables effective heat transfer to PCB copper when lead-soldered to thermal pad |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads; cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., transformer secondary center-tap or switch node return) |
| Cathode | Forward current exit / reverse blocking terminal | Marked with band; connects to output rail or inductor input; blocks 1000 V during off-state |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics per stress test requirements |
| Soft recovery characteristic | Reduces EMI and voltage spikes during commutation in buck/boost/flyback converters |
| Glass passivated junction | Enhances long-term reliability and moisture resistance vs. epoxy-passivated alternatives |
| MSL Level 1 rating | Allows unlimited floor life and single-reflow processing at 260 °C peak without baking |
| Low profile SMA package | Enables high-density PCB layouts and compatibility with standard SMT pick-and-place equipment |
Applications
| Automotive DC-DC Converters | Industrial SMPS Rectification |
|---|---|
Use Scenario: High-efficiency 12 V–48 V bidirectional DC-DC conversion in 48 V mild-hybrid systems. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous rectifier stage, handling 1.5 A continuous reverse recovery current. Use Value: 120 ns trr and 20 mJ avalanche energy ensure reliable operation during rapid load transients and inductive kickback. |
Use Scenario: Output rectification in 100–200 W open-frame industrial power supplies. IC Role / Device Role / Timing Role: Fast recovery rectifier in flyback or forward converter secondary side. Use Value: 1000 V VRRM margin accommodates reflected voltage spikes in unregulated designs without snubber overhead. |
| Telecom Power Brick Outputs | UPS Inverter Freewheeling |
Use Scenario: +54 V and +48 V output rails in telecom rectifier modules operating at 200–500 kHz. IC Role / Device Role / Timing Role: Secondary-side rectifier managing high-frequency, low-duty-cycle pulses. Use Value: Soft recovery minimizes conducted EMI, easing compliance with EN 55032 Class B limits. |
Use Scenario: Bidirectional freewheeling path in three-phase IGBT-based UPS inverters. IC Role / Device Role / Timing Role: Clamping diode across inductive loads during PWM dead-time intervals. Use Value: 150 °C max junction temperature and robust avalanche capability prevent thermal runaway during overload conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast avalanche rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1L06S | 600 V VRRM, 1.0 A IF(AV), 75 ns trr, TO-277 package | Lower voltage rating; suited for ≤400 V AC input systems only | Select when faster recovery is prioritized over voltage headroom and TO-277 footprint is acceptable |
| ES1J-M3/5AT | 600 V VRRM, 1.0 A IF(AV), 35 ns trr, SMA package, no AEC-Q101 | Lacks automotive qualification and avalanche energy rating (ER not specified) | Choose for cost-sensitive consumer power supplies where AEC-Q101 and 20 mJ ER are not required |
Compared with STTH1L06S and ES1J-M3/5AT, the BYG21MHE3_A/H provides higher voltage margin (1000 V), automotive qualification, and verified avalanche ruggedness-making it uniquely suitable for industrial and automotive 48 V+ systems requiring both reliability and transient robustness.
Availability
BYG21MHE3_A/H is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial SMPS rectification, and telecom power brick outputs requiring stable component supply, long-lifecycle support, and AEC-Q101-compliant sourcing.
Supply support for BYG21MHE3_A/H includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The BYG21MHE3_A/H belongs to Vishay's fast avalanche rectifier product line, engineered for high-voltage, high-reliability power conversion in automotive, industrial, and telecom infrastructure where soft recovery and avalanche ruggedness are mandatory.
FAQ
What is the maximum junction temperature rating for BYG21MHE3_A/H?
The BYG21MHE3_A/H has a maximum junction temperature (TJ max.) of 150 °C, enabling operation in high-ambient environments such as under-hood automotive locations or enclosed industrial power supplies. This rating is validated per the Vishay datasheet revision dated 21-Feb-2020 and applies to continuous operation with appropriate thermal management. Derating curves in Figure 2 confirm usable current capacity down to 0 A at 150 °C ambient when mounted on standard epoxy-glass PCB.
Is BYG21MHE3_A/H AEC-Q101 qualified?
Yes, BYG21MHE3_A/H is AEC-Q101 qualified, as confirmed by the "HE3" suffix and explicit note in the Vishay datasheet (Document Number: 88961). This qualification covers stress tests including HTGB, HTRB, TCT, and mechanical shock, validating suitability for automotive powertrain and body electronics. The "_A/H" ordering code denotes the 7-inch tape-and-reel packaging variant compliant with AEC-Q101 requirements.
What does the "HE3" suffix indicate in BYG21MHE3_A/H?
The "HE3" suffix in BYG21MHE3_A/H identifies the part as RoHS-compliant and AEC-Q101 qualified, distinguishing it from commercial-grade "E3" or halogen-free "HM3" variants. Per Vishay's ordering information table, HE3 devices use matte tin-plated leads, meet JESD 201 Class 2 whisker testing, and are rated for automotive temperature cycling and humidity exposure-critical for BYG21MHE3_A/H deployment in safety-critical vehicle subsystems.
What is the reverse recovery time (trr) of BYG21MHE3_A/H and how is it measured?
The BYG21MHE3_A/H has a typical reverse recovery time (trr) of 120 ns, measured under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A at TA = 25 °C, per the Vishay datasheet's Electrical Characteristics table. This value reflects the time required for minority carriers to clear after forward conduction, directly impacting switching loss and EMI in high-frequency converters. The soft recovery behavior further reduces di/dt-induced ringing compared to ultrafast diodes with abrupt recovery.
Does BYG21MHE3_A/H have an avalanche energy rating, and what is its value?
Yes, BYG21MHE3_A/H has a specified non-repetitive avalanche energy rating (ER) of 20 mJ, measured under I(BR)R = 1 A and TJ = 25 °C with inductive load switching. This parameter quantifies the device's ability to absorb transient energy during inductive turn-off events-essential for freewheeling diode applications in motor drives, UPS inverters, and DC-DC converters where voltage spikes exceed VRRM. The rating is confirmed in the Maximum Ratings table of the official Vishay datasheet.
BYG21MHE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Avalanche
- Voltage - DC Reverse (Vr) (Max):
- 1000 V
- Current - Average Rectified (Io):
- 1.5A
- Voltage - Forward (Vf) (Max) @ If:
- 1.6 V @ 1.5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 120 ns
- Current - Reverse Leakage @ Vr:
- 1 µA @ 1000 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
- Operating Temperature - Junction:
- -55°C ~ 150°C
BYG21MHE3_A/H FAQ
1.How can I place an order for BYG21MHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for BYG21MHE3_A/H on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for BYG21MHE3_A/H reliable?
The price and inventory of BYG21MHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BYG21MHE3_A/H is usually 5 days.
3.What payment methods are accepted for BYG21MHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BYG21MHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BYG21MHE3_A/H?
BYG21MHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BYG21MHE3_A/H order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for BYG21MHE3_A/H?
For technical support, including BYG21MHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BYG21MHE3_A/H requirements.
6.How does Aetrix verify that BYG21MHE3_A/H is sourced from the original manufacturer or authorized distributors?
All BYG21MHE3_A/H products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BYG21MHE3_A/H meets industry standards.
7.What is the process for return or replacement of BYG21MHE3_A/H?
All BYG21MHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with BYG21MHE3_A/H, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The BYG21MHE3_A/H part is unused and in its original packaging.
Return procedure for BYG21MHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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