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Microchip Technology 681-1D
- Part No.:
- 681-1D
- Manufacturer:
- Microchip Technology
- Category:
- Diode Arrays
- Package:
- ND
- Datasheet:
-
681-1D.pdf
- Description:
- DIODE MODULE GP 100V 15A ND
- Quantity:
- Payment:
- Shipping:
Inventory:7,374
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Product details
Overview
681-1D from Microsemi is a fast recovery rectifier assembly in doubler configuration, housed in an electrically isolated aluminum case, rated for 100 V VRWM, 15 A average DC output current at TC = 55 °C, 150 A non-repetitive surge current, and 500 ns reverse recovery time - used in high-reliability AC/DC front-end power conversion.
For engineers reviewing the 681-1D datasheet, 681-1D pinout, 681-1D application, or 681-1D equivalent, key selection factors include its doubler topology, 100 V working peak reverse voltage, 150 °C junction temperature rating, RoHS-compliant matte tin terminals, and thermal resistance of 6.0 °C/W (junction-to-case).
Technical Context
The 681-1D implements a dual-diode doubler configuration with common cathodes, enabling full-wave voltage doubling without external transformer center taps. Its electrically isolated aluminum case provides both mechanical robustness and thermal conduction path to heatsinks.
It operates with controlled avalanche characteristics and supports 180° conduction-angle sine-wave inputs at 50/60 Hz. The device is characterized at 25 °C and derated linearly above 55 °C case temperature per Figure 3.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 100 V - maximum continuous reverse voltage before breakdown; defines safe operating limit in AC line rectification |
| IO (TC = 55 °C) | 15 A - max average DC output current per leg under forced-air or heatsink-cooled conditions |
| IFSM | 150 A - non-repetitive surge capability for inrush current handling during power-up |
| trr | 500 ns - reverse recovery time measured at IF = 1.0 A, IRM = 1.0 A, IR(REC) = 0.5 A; critical for high-frequency switching efficiency |
| TJ max | +150 °C - maximum junction temperature; enables operation in high-ambient industrial environments |
| RθJC | 6.0 °C/W - thermal resistance from junction to case; determines minimum heatsink requirement for thermal management |
Pinout & Package
Package: Aluminum case with electrically isolated mounting surface; terminals: RoHS-compliant matte tin; weight ≈30 g; dimensions per RF01151 Rev A Page 6 (D = 2.24–2.26", E = 1.87–1.88", F = 1.48–1.49").
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AC1 | Alternating current input terminal 1 | One AC input node for doubler configuration; must be connected to transformer secondary or AC source |
| AC2 | Alternating current input terminal 2 | Second AC input node; phase-opposed to AC1 to enable voltage-doubling action |
| + | Cathode-positive output | Common cathode node delivering doubled DC output voltage relative to ground reference |
Key Features
| Feature | Design Value |
|---|---|
| Electrically isolated aluminum case | Enables direct mounting to grounded heatsinks without insulation pads, reducing thermal impedance and system cost |
| Controlled avalanche characteristics | Allows safe energy absorption during transient overvoltage events without destructive failure |
| Doubler configuration (D suffix) | Provides 2× peak AC input voltage as DC output without requiring center-tapped transformer |
| RoHS-compliant matte tin terminals | Ensures lead-free solder compatibility and long-term reliability in automated assembly processes |
Applications
| Industrial Power Supplies | Medical Imaging Power Modules |
|---|---|
Use Scenario: High-reliability AC/DC conversion in DIN-rail mounted 3 kW power supplies with wide ambient temperature range. IC Role / Device Role / Timing Role: Doubler rectifier providing 200 V DC bus from 100 V AC input while maintaining isolation and thermal stability. Use Value: Eliminates need for center-tapped transformer, reduces component count and magnetic size by ~30% versus full-bridge designs. | Use Scenario: X-ray generator HV power supply requiring low-noise, high-surge-capable rectification with strict safety isolation. IC Role / Device Role / Timing Role: Primary high-current rectifier stage converting transformer output to stable DC for capacitor charging. Use Value: 150 A surge rating and controlled avalanche behavior prevent catastrophic failure during repeated tube discharge cycles. |
| Test Equipment Power Front-Ends | Avionics Power Converters |
Use Scenario: Programmable DC power supplies needing precise, repeatable output voltage with minimal ripple under dynamic load. IC Role / Device Role / Timing Role: Voltage-doubling rectifier feeding bulk storage capacitors in regulated output stage. Use Value: 500 ns trr minimizes switching losses and improves regulation bandwidth compared to standard recovery alternatives. | Use Scenario: MIL-STD-704 compliant 270 V DC aircraft power converters operating in vibration-prone, thermally constrained enclosures. IC Role / Device Role / Timing Role: Isolated, high-temperature-rated rectifier in primary AC/DC conversion stage. Use Value: Aluminum case with 150 °C TJ rating and 6.0 °C/W RθJC enables reliable operation without active cooling in sealed avionics bays. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar doubler rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-15EWH06-M3 | Single-phase bridge (4-pin), 600 V VRWM, 15 A IO, TO-247AC package, no case isolation | Requires external isolation and heatsink insulation; higher VRWM but lower trr (35 ns) | Preferred where higher voltage margin and faster recovery are prioritized over mechanical integration and thermal coupling |
| ON Semiconductor MUR1560G | Single ultrafast diode (2-pin), 600 V VRWM, 15 A IO, TO-220AC package, non-isolated | Needs two devices + external wiring for doubler function; lacks integrated case isolation and thermal path | Selected when board-level flexibility and discrete layout control outweigh benefits of monolithic doubler integration |
Compared with 681-1D, VS-15EWH06-M3 offers higher voltage rating and faster recovery but requires external isolation and lacks the integrated thermal interface; MUR1560G delivers superior speed and cost efficiency per diode but increases assembly complexity and thermal design effort for doubler implementation.
Availability
681-1D is available at Aetrix Electronics and suitable for industrial power supplies, medical imaging systems, and avionics converters requiring stable component supply, long-life thermal performance, and certified RoHS compliance.
Supply support for 681-1D 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
Microsemi Corporation (now part of Microchip Technology) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, communications, and industrial markets.
The 681(e3) series was developed specifically for ruggedized AC/DC front-end rectification in thermally demanding, safety-critical power systems where electrical isolation, surge resilience, and long-term thermal stability are mandatory.
FAQ
What does the "D" suffix mean in 681-1D?
The "D" suffix in 681-1D denotes doubler configuration - a two-diode arrangement with shared cathode (+) output and separate AC input terminals (AC1 and AC2). This allows voltage doubling from a single secondary winding, eliminating the need for a center-tapped transformer. The 681-1D is not a center-tap device; its pinout and internal topology are distinct from P/N-suffixed variants.
Is 681-1D RoHS compliant?
Yes, 681-1D is RoHS compliant, as indicated by the "e3" designation in its full part number per Microsemi's nomenclature. It uses matte tin plating on terminals and meets Directive 2011/65/EU requirements. The device carries no lead-based solder or restricted substances, and its packaging documentation (RF01151 Rev A) explicitly confirms RoHS compliance.
What is the maximum junction temperature for 681-1D?
The maximum junction temperature for 681-1D is +150 °C, as specified in the Maximum Ratings table on page 1 of RF01151 Rev A. This rating enables reliable operation in high-ambient environments such as enclosed industrial cabinets or avionics bays, provided thermal design maintains case temperature within derating limits shown in Figure 3.
Can 681-1D replace a center-tap rectifier like 681-1P?
No, 681-1D cannot directly replace 681-1P because they have different topologies and pinouts: 681-1D is a doubler (AC1/AC2/+), while 681-1P is a center-tap positive (AC/+/-). Substitution would require PCB redesign, transformer rewiring, and verification of voltage/current stress redistribution. The 681-1D datasheet does not claim functional or pin compatibility with P/N-suffixed variants.
What is the forward voltage drop of 681-1D at rated current?
The forward voltage drop of 681-1D is 1.2 V per leg at 10 A and 25 °C, as specified in the Electrical Characteristics table on page 3 of RF01151 Rev A. This value applies to each diode in the doubler pair under DC or low-frequency sinusoidal conduction; actual VF rises with temperature and may reach ~1.4 V at 100 °C junction temperature.
681-1D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- ND
- Packaging:
- Bulk
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Series Connection
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io) (per Diode):
- 15A
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 10 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 10 µA @ 100 V
- Operating Temperature - Junction:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Chassis Mount
- Supplier Device Package:
- ND
681-1D FAQ
1.How can I place an order for 681-1D through Aetrix?
Please submit a Request for Quotation (RFQ) for 681-1D 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 681-1D reliable?
The price and inventory of 681-1D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 681-1D is usually 5 days.
3.What payment methods are accepted for 681-1D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 681-1D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 681-1D?
681-1D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 681-1D 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 681-1D?
For technical support, including 681-1D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 681-1D requirements.
6.How does Aetrix verify that 681-1D is sourced from the original manufacturer or authorized distributors?
All 681-1D 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 681-1D meets industry standards.
7.What is the process for return or replacement of 681-1D?
All 681-1D units undergo pre-shipment inspection (PSI). If there is an issue with 681-1D, 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 681-1D part is unused and in its original packaging.
Return procedure for 681-1D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
681-1D Tags
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BAV99-7-F
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BAT54C-7-F
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BAV99,215
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BAV70LT1G
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BAT54CLT1G
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BAT54S-7-F
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BAV99LT1G
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BAT54S,215
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MMBD1503-TP
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BAV99WT1G
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