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Microchip Technology 681-6
- Part No.:
- 681-6
- Manufacturer:
- Microchip Technology
- Category:
- Diode Arrays
- Package:
- ND
- Datasheet:
-
681-6.pdf
- Description:
- DIODE MODULE GP 600V 15A ND
- Quantity:
- Payment:
- Shipping:
Inventory:8,059
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Product details
Overview
681-6 from Microsemi is a standard-recovery, center-tap positive (P) silicon rectifier assembly in an electrically isolated aluminum case, rated for 15 A average DC output current at TC = 55 °C, 600 V peak reverse voltage (VRWM), and 150 A nonrepetitive surge current - used in industrial AC/DC power supplies requiring high thermal robustness and electrical isolation.
For engineers reviewing the 681-6 datasheet, 681-6 pinout, 681-6 application, or 681-6 equivalent, key selection considerations include its 6.0 °C/W junction-to-case thermal resistance, 150 °C maximum junction temperature, center-tap positive terminal configuration, aluminum package with tin/lead or RoHS-compliant matte tin terminals, and compliance with JESD282-B for VRWM and IFSM definitions.
Technical Context
This device integrates two series-connected diode legs sharing a common cathode (center-tap positive configuration), enabling full-wave rectification from dual AC inputs. It operates with controlled avalanche characteristics and is specified for use with 50/60 Hz sine-wave input and 180° conduction angle.
Thermal management relies on direct mounting to heatsinks via its aluminum case; RθJA = 20 °C/W reflects natural convection conditions, while RθJC = 6.0 °C/W enables precise junction temperature estimation under forced cooling or interface-compensated mounting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 600 V - maximum continuous reverse voltage per leg before breakdown; defines safe operating limit in bridge or center-tap topologies |
| IO @ TC = 55 °C | 15 A - average DC output current per leg with case temperature maintained at 55 °C; derates to 10.5 A at 100 °C |
| IFSM | 150 A - nonrepetitive peak forward surge current capability; supports inrush current handling in transformer-fed supplies |
| VF @ 10 A | 1.2 V - forward voltage drop per leg at 10 A; determines conduction loss and thermal load under nominal load |
| RθJC | 6.0 °C/W - thermal resistance from junction to case; critical for heatsink sizing when mounting directly to metal surface |
| TJ max | +150 °C - maximum allowable junction temperature; sets upper bound for thermal design margin |
| IR @ VRWM | 10 µA @ 25 °C - reverse leakage per leg at rated VRWM; low leakage preserves efficiency in high-impedance hold-up stages |
Pinout & Package
Package: Aluminum case with electrically isolated mounting surface; terminals are tin/lead or RoHS-compliant matte tin; weight ≈30 g; dimensions per RF01151 Rev A Page 6 (D = 2.25 in / 57.15 mm, E = 1.875 in / 47.63 mm, F = 1.485 in / 37.72 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AC1 | Alternating current input leg 1 | One of two symmetrical AC input terminals; connects to secondary winding end in center-tap transformer configuration |
| AC2 | Alternating current input leg 2 | Second AC input terminal; 180° phase-opposed to AC1; forms full-wave input pair with AC1 |
| + | Cathode (common output) | Center-tap positive output node; carries full rectified DC current; must be routed with low-inductance, high-current trace |
| – | Anode (common reference) | Shared anode reference point; tied to circuit ground or negative rail in conventional center-tap topology |
Key Features
| Feature | Design Value |
|---|---|
| Electrically isolated aluminum case | Enables direct heatsink mounting without insulating hardware while maintaining galvanic isolation between circuit and thermal plane |
| Controlled avalanche characteristics | Allows safe operation during transient overvoltage events without destructive failure; supports ruggedized industrial power designs |
| 150 °C junction rating | Extends operational lifetime in high-ambient environments (e.g., enclosed industrial cabinets) without derating penalties |
| RoHS-compliant (e3) terminal finish | Matte tin plating meets lead-free soldering requirements and eliminates tin whisker risk in long-life deployments |
| 6.0 °C/W RθJC | Supports compact thermal design: ≤90 W dissipation possible with ≤540 °C/W total system thermal resistance to ambient |
Applications
| Industrial AC/DC Power Supplies | Motor Drive DC Bus Pre-Charge |
|---|---|
Use Scenario: Transformer-based linear or hybrid power supply delivering regulated ±15 V and +5 V rails for PLC I/O modules. IC Role / Device Role / Timing Role: Center-tap rectifier providing full-wave DC output to bulk capacitor stage; aluminum case bolted to chassis for passive cooling. Use Value: 15 A IO rating and 600 V VRWM support 480 VAC input with safety margin; isolation prevents ground loop coupling into analog signal paths. | Use Scenario: Pre-charge circuit limiting inrush into 400 V DC bus capacitors during startup of variable-frequency motor drives. IC Role / Device Role / Timing Role: High-surge-capable rectifier conducting initial charging current through NTC bypass path before main contactor closure. Use Value: 150 A IFSM withstands repeated pre-charge transients; controlled avalanche behavior avoids catastrophic failure during bus fault recovery. |
| High-Reliability Telecom Rectifiers | Test Equipment AC Line Conditioning |
Use Scenario: -48 V DC power shelf in carrier-grade telecom equipment with redundant AC inputs and hot-swap capability. IC Role / Device Role / Timing Role: Dual-leg rectifier converting split-phase AC to isolated DC bus; mounted to cold plate with thermal interface material. Use Value: RθJC = 6.0 °C/W enables stable operation at 70 °C ambient; RoHS-compliant e3 finish ensures compatibility with Pb-free reflow profiles. | Use Scenario: Precision AC source conditioning in automated test systems requiring clean, low-noise DC for DUT biasing. IC Role / Device Role / Timing Role: Low-leakage (10 µA @ 25 °C) rectifier feeding active filtering stage to suppress line harmonics and ripple. Use Value: Minimal IR preserves regulation accuracy across wide temperature range; aluminum case shields sensitive analog sections from EMI. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-15CPH06-M3 | Same 600 V VRWM, 15 A IO, but TO-247AC package with insulated tab; RθJC = 1.6 °C/W; no center-tap configuration | Requires external center-tap wiring or dual-diode layout; better thermal performance but higher PCB area cost | Select when board-level thermal resistance dominates and discrete layout flexibility is available |
| IXYS MBR1560CT | Schottky construction; VF ≈ 0.85 V @ 10 A; lower trr but VRWM limited to 60 V; not suitable for 600 V line applications | Only applicable in low-voltage DC-DC or battery-charging circuits; cannot replace 681-6 in AC line rectification | Consider only for <100 V DC output stages where ultra-low VF outweighs voltage limitation |
Compared with VS-15CPH06-M3 and MBR1560CT, the 681-6 uniquely delivers integrated center-tap topology, 600 V isolation-rated aluminum packaging, and controlled avalanche robustness - making it irreplaceable in transformer-coupled, high-voltage, thermally constrained industrial rectification where mechanical integration and surge resilience are primary.
Availability
681-6 is available at Aetrix Electronics and suitable for industrial AC/DC power supplies, motor drive DC bus pre-charge circuits, and telecom rectifier modules requiring stable component supply, long-lifecycle assurance, and RoHS-compliant manufacturing.
Supply support for 681-6 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) is a U.S.-based semiconductor company specializing in high-reliability analog and mixed-signal ICs, radiation-hardened devices, and power discretes for aerospace, defense, and industrial markets.
The 681(e3) series was designed specifically for high-power, electrically isolated rectification in mission-critical AC/DC conversion - emphasizing thermal stability, surge immunity, and mechanical ruggedness over cost-optimized consumer-grade alternatives.
FAQ
What is the terminal configuration of the 681-6?
The 681-6 uses a center-tap positive (P) configuration: two AC input terminals (AC1 and AC2) and one shared cathode output (+), with the anode reference (–) serving as the common return. This arrangement enables full-wave rectification from a center-tapped transformer secondary. The marking "+" and "–" is printed on the aluminum case body per RF01151 Rev A documentation.
Does the 681-6 meet RoHS requirements?
Yes, the 681-6 is RoHS compliant (e3 suffix), featuring matte tin terminal plating instead of traditional tin/lead. This satisfies Directive 2011/65/EU and supports lead-free soldering processes. The aluminum case itself contains no restricted substances, and all materials comply with Microsemi's published environmental specifications per RF01151 Rev A.
What is the maximum junction temperature for the 681-6?
The 681-6 has a maximum junction temperature (TJ) of +150 °C, as confirmed in the Maximum Ratings table on page 1 of RF01151 Rev A. This rating applies across the full storage and operating temperature range (–65 °C to +150 °C) and is integral to its use in high-ambient industrial environments where thermal headroom is constrained.
How does the 681-6 differ from the 689-6?
The 681-6 is a standard-recovery rectifier (trr not specified), whereas the 689-6 is fast-recovery with trr ≤ 500 ns. Both share identical VRWM (600 V), IO (15 A), and package; however, the 689-6 is intended for higher-frequency switching applications like SMPS input stages, while the 681-6 targets 50/60 Hz line-frequency rectification where recovery speed is less critical than surge and thermal robustness.
Can the 681-6 be mounted directly to a heatsink?
Yes - the 681-6's aluminum case is electrically isolated, allowing direct bolt-down mounting to grounded or floating heatsinks without thermal interface pads or insulators. Its RθJC = 6.0 °C/W assumes metal-to-metal contact; torque and flatness per RF01151 Rev A Package Dimensions must be observed to maintain thermal integrity and avoid case cracking.
681-6 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):
- 600 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 @ 600 V
- Operating Temperature - Junction:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Chassis Mount
- Supplier Device Package:
- ND
681-6 FAQ
1.How can I place an order for 681-6 through Aetrix?
Please submit a Request for Quotation (RFQ) for 681-6 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 681-6 reliable?
The price and inventory of 681-6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 681-6 is usually 5 days.
3.What payment methods are accepted for 681-6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 681-6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 681-6?
681-6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 681-6 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 681-6?
For technical support, including 681-6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 681-6 requirements.
6.How does Aetrix verify that 681-6 is sourced from the original manufacturer or authorized distributors?
All 681-6 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 681-6 meets industry standards.
7.What is the process for return or replacement of 681-6?
All 681-6 units undergo pre-shipment inspection (PSI). If there is an issue with 681-6, 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 681-6 part is unused and in its original packaging.
Return procedure for 681-6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
681-6 Tags
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BAV99-7-F
Diodes Incorporated
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BAT54C-7-F
Diodes Incorporated
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BAV99,215
Nexperia USA Inc.
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BAT54SLT1G
onsemi
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BAV70LT1G
onsemi
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BAT54CLT1G
onsemi
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BAT54S-7-F
Diodes Incorporated
-
BAV99LT1G
onsemi
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BAT54S,215
Nexperia USA Inc.
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BAS40-04LT1G
onsemi
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MMBD1503-TP
Micro Commercial Co
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BAV99WT1G
onsemi
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