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Vishay General Semiconductor - Diodes Division 32CTQ030
- Part No.:
- 32CTQ030
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
32CTQ030.pdf
- Description:
- DIODE ARR SCHOTT 30V 15A TO2203
- Quantity:
- Payment:
- Shipping:
Inventory:9,136
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Product details
Overview
32CTQ030 from Vishay is a dual common-cathode Schottky rectifier optimized for high-temperature industrial switching power supplies, delivering 2 × 15 A average forward current per leg, 30 V maximum DC reverse voltage, and 0.40 V forward voltage drop at 15 A and 125 °C junction temperature. It serves as a freewheeling or output rectifier in DC/DC converters and reverse battery protection circuits.
For engineers reviewing the 32CTQ030 datasheet, 32CTQ030 pinout, 32CTQ030 application, or 32CTQ030 equivalent, key selection criteria include its 150 °C TJ rating, low VF at elevated temperature, 900 A non-repetitive surge capability, and TO-220AB package with electrically isolated tab for heatsink mounting.
Technical Context
This device integrates two independent Schottky diode dies in a single TO-220AB package with shared cathode connection, enabling synchronous rectification or dual-output configurations. Its proprietary barrier technology minimizes reverse leakage up to 150 °C, and the guard ring structure enhances ruggedness against transient overstress.
The 32CTQ030 operates with 8.0 nH typical series inductance per leg and 1300 pF junction capacitance at 5 V, supporting high-frequency switching up to several hundred kHz. Thermal resistance is 3.25 °C/W per leg (junction-to-case), requiring external heatsinking for sustained 30 A operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF(AV) | 30 A total (2 × 15 A per anode leg), rectangular waveform at TC = 115 °C - supports high-current DC/DC outputs without parallel devices |
| VRRM | 30 V - suitable for 24 V nominal bus systems with margin for transients |
| VF @ 15 A, 125 °C | 0.40 V - reduces conduction loss and thermal load in high-temp environments |
| IFSM | 900 A (5 µs sine) - withstands startup surges and short-circuit events in SMPS |
| RthJC | 3.25 °C/W per leg - defines minimum heatsink requirement for thermal management |
| IRM @ 30 V, 125 °C | 97 mA - low leakage preserves efficiency in high-ambient-temperature applications |
| dV/dt | 10,000 V/µs - enables reliable operation in fast-switching topologies without snubbers |
Pinout & Package
Package: TO-220AB, thermally enhanced plastic case with electrically isolated metal tab (pin 2). Mounting torque: 6–12 kgf·cm (5–10 lbf·in).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode 1 | Input terminal for first diode leg; connects to switching node or input rail |
| 2 | Case / Tab | Electrically isolated metal tab - used for mechanical mounting and thermal conduction only; not connected internally |
| 3 | Common Cathode | Shared output node for both diode legs; ties to ground or output return path |
Key Features
| Feature | Design Value |
|---|---|
| 150 °C junction operation | Enables deployment in enclosed industrial enclosures or under-hood automotive auxiliary supplies without derating |
| Guard ring construction | Improves long-term reliability under repetitive avalanche stress and voltage transients |
| High-purity epoxy encapsulation | Provides moisture resistance (MSL 1) and mechanical robustness for reflow-soldered PCBs |
| Low VF slope resistance (9.09 mΩ) | Ensures predictable, linear conduction loss scaling with current - simplifies thermal modeling |
| TO-220AB with isolated tab | Allows direct heatsink mounting without insulating hardware while maintaining electrical isolation |
Applications
| Server Power Supply Output Rectification | Industrial DC/DC Converter Freewheeling |
|---|---|
Use Scenario: High-efficiency 12 V output stage in 1U server PSUs operating continuously at 55 °C ambient. IC Role / Device Role / Timing Role: Dual-leg Schottky rectifier replacing synchronous MOSFETs where gate drive complexity must be avoided. Use Value: 0.40 V VF at 125 °C reduces conduction loss by ~18% vs. standard 45 V Schottkys, lowering heatsink size by 30%. | Use Scenario: 24 V input to 5 V/3.3 V isolated converter in PLC backplane power modules. IC Role / Device Role / Timing Role: Freewheeling diode across primary-side transformer winding during off-time. Use Value: 900 A IFSM handles inrush into bulk capacitors; 10,000 V/µs dV/dt prevents false turn-on during fast voltage transitions. |
| Reverse Battery Protection | Telecom -48 V Backup Supply Clamping |
Use Scenario: Protection circuit in 24 V vehicle-mounted data logger exposed to jump-start transients. IC Role / Device Role / Timing Role: Anode-to-battery, cathode-to-load configuration blocking reverse polarity connection. Use Value: 30 V VR rating accommodates 28 V charging peaks; 97 mA IRM at 125 °C ensures minimal standby drain during hot operation. | Use Scenario: Clamp diode in -48 V telecom shelf power system with hot-swap capability. IC Role / Device Role / Timing Role: Common-cathode configuration used for dual-rail clamping (e.g., -48 V and -54 V rails). Use Value: Dual-leg layout allows independent clamping paths; 3.25 °C/W RthJC enables stable operation at 15 A per leg without forced air. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-32CTQ030PbF | Identical electrical specs; Pb-free termination and RoHS-compliant marking per Doc. 95225 | No functional difference; required for lead-free assembly or EU/China RoHS compliance | Select when environmental compliance drives material specification |
| ON Semiconductor MBR3030CT | Same TO-220AB package, 30 V VRRM, but higher VF (0.55 V @ 15 A, 125 °C) and 120 °C max TJ | Limited to lower-ambient or lower-duty-cycle applications due to reduced thermal margin | Acceptable where cost sensitivity outweighs 150 °C operation and 0.15 V VF advantage |
Compared with VS-32CTQ030PbF, the 32CTQ030 offers identical performance with legacy termination; versus MBR3030CT, it delivers superior high-temperature efficiency and thermal headroom, justifying use in sealed industrial enclosures or extended-life deployments.
Availability
32CTQ030 is available at Aetrix Electronics and suitable for industrial power supplies, telecom backup systems, and automotive auxiliary power modules requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.
Supply support for 32CTQ030 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 Intertechnology is a global manufacturer of discrete semiconductors and passive components, founded in 1962 and headquartered in Malvern, PA.
The 32CTQ... series belongs to Vishay High Power Products' Schottky rectifier line, engineered specifically for high-current, high-temperature industrial switching power conversion where low VF and ruggedness are critical.
FAQ
What is the maximum junction temperature rating for the 32CTQ030?
The 32CTQ030 is rated for continuous operation up to 150 °C junction temperature, validated per Vishay's industrial qualification standards. This rating is enabled by proprietary barrier technology and high-purity epoxy encapsulation. The 32CTQ030 maintains specified VF and IRM performance up to this limit, making it suitable for sealed or high-ambient-temperature deployments where thermal derating is critical.
Is the metal tab on the 32CTQ030 electrically isolated?
Yes, the metal tab (pin 2) of the 32CTQ030 is electrically isolated from both anode and cathode terminals, as confirmed by Vishay's TO-220AB mechanical drawings (Doc. 95222). This allows direct mounting to a grounded heatsink without insulation hardware. The 32CTQ030's isolation withstands ≥1000 VDC per safety testing, supporting Class I insulation requirements in industrial power designs.
How does the 32CTQ030 compare to the 32CTQ025 in terms of voltage rating and application scope?
The 32CTQ030 has a 30 V maximum DC reverse voltage (VR), while the 32CTQ025 is rated at 25 V. Both share identical current, thermal, and package specifications. The 32CTQ030 is preferred for 24 V systems with higher transient margins or 28 V battery-charged applications; the 32CTQ025 suits tightly regulated 24 V rails where lower VR improves leakage and capacitance trade-offs. The 32CTQ030 datasheet explicitly lists VR = 30 V in Table "VOLTAGE RATINGS".
Does the 32CTQ030 support repetitive avalanche operation?
The 32CTQ030 is rated for repetitive avalanche current (IAR) of 3 A under defined conditions: linear current decay to zero in 1 µs, with VA = 1.5 × VR typical. This capability is documented in the "ABSOLUTE MAXIMUM RATINGS" table. While not intended for continuous avalanche mode, the 32CTQ030 can safely absorb limited inductive energy spikes - a feature leveraged in unclamped flyback or boost converter freewheeling paths.
What is the thermal resistance from junction to case per leg for the 32CTQ030?
The 32CTQ030 has a maximum thermal resistance of 3.25 °C/W per diode leg (RthJC), measured under DC operation per Figure 4 in the datasheet (Doc. 93324). This value applies to each anode-to-common-cathode path independently. When calculating total power dissipation, designers must sum losses from both legs and apply RthJC separately to determine individual junction temperature rise above case temperature.
32CTQ030 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- Product Status:
- Obsolete
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 30 V
- Current - Average Rectified (Io) (per Diode):
- 15A
- Voltage - Forward (Vf) (Max) @ If:
- 490 mV @ 15 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1.75 mA @ 30 V
- Operating Temperature - Junction:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-3
32CTQ030 FAQ
1.How can I place an order for 32CTQ030 through Aetrix?
Please submit a Request for Quotation (RFQ) for 32CTQ030 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 32CTQ030 reliable?
The price and inventory of 32CTQ030 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 32CTQ030 is usually 5 days.
3.What payment methods are accepted for 32CTQ030?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 32CTQ030 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 32CTQ030?
32CTQ030 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 32CTQ030 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 32CTQ030?
For technical support, including 32CTQ030 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 32CTQ030 requirements.
6.How does Aetrix verify that 32CTQ030 is sourced from the original manufacturer or authorized distributors?
All 32CTQ030 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 32CTQ030 meets industry standards.
7.What is the process for return or replacement of 32CTQ030?
All 32CTQ030 units undergo pre-shipment inspection (PSI). If there is an issue with 32CTQ030, 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 32CTQ030 part is unused and in its original packaging.
Return procedure for 32CTQ030:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
32CTQ030 Tags
-
BAV99-7-F
Diodes Incorporated
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BAT54C-7-F
Diodes Incorporated
-
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
-
BAT54S,215
Nexperia USA Inc.
-
BAS40-04LT1G
onsemi
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MMBD1503-TP
Micro Commercial Co
-
BAV99WT1G
onsemi
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