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Microchip Technology 681-2
- Part No.:
- 681-2
- Manufacturer:
- Microchip Technology
- Category:
- Diode Arrays
- Package:
- ND
- Datasheet:
-
681-2.pdf
- Description:
- DIODE MODULE GP 200V 15A ND
- Quantity:
- Payment:
- Shipping:
Inventory:9,436
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Product details
Overview
681-2 from Microsemi is a standard recovery center-tap rectifier assembly in an electrically isolated aluminum case, rated for 15 A average DC output current at TC = 55 °C, 100 V VRWM per leg, and 150 A nonrepetitive surge current. It delivers 1.2 V forward voltage at 10 A per leg and operates up to 150 °C junction temperature, used in industrial AC/DC power supplies with high thermal reliability requirements.
For engineers reviewing the 681-2 datasheet, 681-2 pinout, 681-2 application, or 681-2 equivalent, key selection factors include its center-tap positive (P) terminal configuration, 6.0 °C/W junction-to-case thermal resistance, controlled avalanche capability, RoHS-compliant matte tin terminals, and isolation-enabled mounting in high-voltage chassis-grounded systems.
Technical Context
This rectifier assembly integrates two series-connected diode dies in a single aluminum package with electrically isolated case, enabling dual-output or split-rail DC generation from a center-tapped transformer secondary. Its standard recovery behavior (no trr spec provided) and 150 °C max junction temperature support continuous conduction mode operation in high-temperature environments.
The device uses a center-tap positive (P) configuration: AC input appears across outer terminals, + output at center terminal, and – referenced to case ground. Thermal performance relies on direct case-to-heatsink mounting, leveraging 6.0 °C/W RθJC and 20 °C/W RθJA for system-level derating per Figure 3.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM per leg | 200 V - Maximum sustained reverse voltage each diode leg withstands without breakdown |
| IO @ TC = 55 °C | 15 A - Max average DC output current deliverable with heatsink maintaining case at 55 °C |
| VF @ 10 A | 1.2 V - Forward voltage drop per leg at rated load, defining conduction loss and thermal rise |
| IFSM Peak | 150 A - Nonrepetitive surge current handling for inrush or fault conditions |
| TJ Max | 150 °C - Absolute maximum junction temperature, setting thermal design margin |
| RθJC | 6.0 °C/W - Thermal resistance from junction to case, critical for heatsink sizing |
| Case Material | Aluminum - Electrically isolated metal case enabling chassis-grounded mounting and EMI shielding |
Pinout & Package
Package: ND - Aluminum hermetic case with electrically isolated body, center-tap positive (P) configuration, matte tin terminals, ~30 g weight. Dimensions: D = 56.9–57.4 mm, E = 47.5–47.75 mm, C (dia) = 4.19–4.45 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AC (outer terminal) | Alternating current input | Connects to one end of center-tapped transformer secondary; carries full AC waveform |
| + (center terminal) | Cathode-positive output | Common cathode node delivering positive DC output; electrically isolated from case |
| – (outer terminal) | Anode-negative reference | Common anode node tied to circuit ground or negative rail; case is isolated but may be grounded separately |
| Case | Electrically isolated thermal path | Mounting surface for heatsink; no internal electrical connection - enables chassis grounding without shorting |
Key Features
| Feature | Design Value |
|---|---|
| Controlled avalanche capability | Enables safe energy absorption during inductive switching transients without destructive failure |
| Electrically isolated aluminum case | Permits direct mounting to grounded chassis while maintaining circuit isolation and improving EMI immunity |
| RoHS-compliant matte tin terminals | Ensures lead-free solder compatibility and long-term intermetallic stability under thermal cycling |
| 150 °C junction rating | Supports operation in enclosed industrial enclosures or high-ambient environments without forced air |
Applications
| Industrial AC/DC Power Supplies | High-Reliability Motor Drive Front Ends |
|---|---|
Use Scenario: Transformer-based linear or phase-controlled rectification in factory automation power modules. IC Role / Device Role / Timing Role: Center-tap rectifier assembly converting 115/230 VAC transformer secondary to dual-polarity DC rails. Use Value: Aluminum case isolation allows direct heatsink mounting to grounded enclosure, reducing system EMI and simplifying safety certification. | Use Scenario: DC bus generation for three-phase IGBT gate driver supplies in servo amplifiers. IC Role / Device Role / Timing Role: Dual-leg rectifier providing isolated ±15 V bias rails from auxiliary winding with controlled avalanche clamping. Use Value: 150 A surge rating handles motor stall currents; 150 °C TJ rating ensures reliability during extended overload conditions. |
| Test Equipment Power Sections | Medical Imaging Power Subsystems |
Use Scenario: Precision DC power generation in programmable DC sources requiring low-noise, stable outputs. IC Role / Device Role / Timing Role: Center-tap rectifier feeding LC-filtered output stage with minimal voltage droop under dynamic load steps. Use Value: 1.2 V VF at 10 A ensures predictable conduction loss and thermal profile for calibration-grade thermal management. | Use Scenario: High-isolation auxiliary power for X-ray generator control logic and sensor interfaces. IC Role / Device Role / Timing Role: Rectifier assembly supplying isolated bias rails where creepage/clearance and leakage current are safety-critical. Use Value: Electrically isolated aluminum case meets IEC 60601 creepage requirements while dissipating heat without additional insulation barriers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier assembly applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-15CPH02-M3 | Single-diode TO-247 package; no integrated center tap; 200 V VRWM; 15 A IO; 1.15 V VF @ 10 A | Requires external center-tap wiring; lower thermal resistance (0.8 °C/W) but no case isolation | Select when discrete layout control and lower VF outweigh need for integrated isolation and compactness |
| IXYS MBR15200CT | TO-220AB center-tap Schottky; 200 V VRWM; 15 A IO; 0.95 V VF @ 10 A; 125 °C TJ max | Lower VF reduces conduction loss but lacks avalanche rating and aluminum isolation | Select for efficiency-critical low-voltage DC supplies where thermal headroom and isolation are less critical |
Compared with VS-15CPH02-M3 and MBR15200CT, the 681-2 uniquely combines electrically isolated aluminum packaging, 150 °C junction rating, and controlled avalanche-making it irreplaceable in chassis-grounded, high-surge, high-temperature industrial power designs where integrated isolation and ruggedness are mandatory.
Availability
681-2 is available at Aetrix Electronics and suitable for industrial AC/DC power supplies, motor drive front ends, and medical imaging subsystems requiring stable component supply, long-lifecycle availability, and traceable sourcing.
Supply support for 681-2 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, discretes, and RF solutions for aerospace, defense, and industrial markets.
The 681(e3) series was designed specifically for ruggedized, thermally demanding rectification tasks in safety-critical and high-isolation power systems where aluminum-case isolation and controlled avalanche behavior are essential.
FAQ
What is the pin configuration of the 681-2?
The 681-2 uses a center-tap positive (P) configuration: two outer terminals labeled "AC" serve as alternating current inputs, the center terminal marked "+" is the common cathode output, and the case is electrically isolated. The "–" reference is established via the outer AC terminal opposite the "+" leg. This layout is confirmed in the mechanical drawings on page 6 of RF01151 Rev A.
Does the 681-2 have a specified reverse recovery time (trr)?
No, the 681-2 does not specify reverse recovery time because it is a standard recovery rectifier - unlike the fast-recovery 689 series, which lists trr = 500 ns. The 681-2 datasheet omits trr entirely, confirming its intended use in line-frequency (50/60 Hz) applications where recovery speed is not critical.
Is the case of the 681-2 electrically connected to any internal terminal?
No, the aluminum case of the 681-2 is fully electrically isolated from all internal terminals, as explicitly stated in the "APPLICATIONS / BENEFITS" section and confirmed by the "electrically isolated aluminum case" description on page 1. This isolation enables safe mounting to grounded chassis without shorting circuit nodes.
What is the maximum working peak reverse voltage (VRWM) for the 681-2?
The 681-2 has a VRWM of 200 V per leg, as defined in the part nomenclature table on page 3: "681-2" corresponds to "200 V Working Peak Reverse Voltage" and "220 V Minimum Breakdown Voltage." This rating applies to each diode leg independently under steady-state reverse bias.
Can the 681-2 be used in surface-mount applications?
No, the 681-2 is not a surface-mount device. It uses the ND package - a through-hole, bolt-down aluminum case with threaded mounting holes and terminals designed for chassis or heatsink mounting using screws and insulating washers. Its mechanical dimensions and weight (~30 g) confirm a through-hole, high-power discrete assembly.
681-2 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):
- 200 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 @ 200 V
- Operating Temperature - Junction:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Chassis Mount
- Supplier Device Package:
- ND
681-2 FAQ
1.How can I place an order for 681-2 through Aetrix?
Please submit a Request for Quotation (RFQ) for 681-2 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 681-2 reliable?
The price and inventory of 681-2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 681-2 is usually 5 days.
3.What payment methods are accepted for 681-2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 681-2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 681-2?
681-2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 681-2 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 681-2?
For technical support, including 681-2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 681-2 requirements.
6.How does Aetrix verify that 681-2 is sourced from the original manufacturer or authorized distributors?
All 681-2 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 681-2 meets industry standards.
7.What is the process for return or replacement of 681-2?
All 681-2 units undergo pre-shipment inspection (PSI). If there is an issue with 681-2, 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 681-2 part is unused and in its original packaging.
Return procedure for 681-2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
681-2 Tags
-
BAV99-7-F
Diodes Incorporated
-
BAT54C-7-F
Diodes Incorporated
-
BAV99,215
Nexperia USA Inc.
-
BAT54SLT1G
onsemi
-
BAV70LT1G
onsemi
-
BAT54CLT1G
onsemi
-
BAT54S-7-F
Diodes Incorporated
-
BAV99LT1G
onsemi
-
BAT54S,215
Nexperia USA Inc.
-
BAS40-04LT1G
onsemi
-
MMBD1503-TP
Micro Commercial Co
-
BAV99WT1G
onsemi
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