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Vishay 3.0C48CA-M3/I
- Part No.:
- 3.0C48CA-M3/I
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3.0C48CA-M3/I.pdf
- Description:
- 3KW, 48V 5%,BIDIR,SMC TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,500
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Product details
Overview
3.0C48CA-M3 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of sensitive electronics. It features a 48 V stand-off voltage (VWM), 53.3–58.9 V breakdown voltage (VBR), 77.4 V clamping voltage at 300 A (10/1000 μs), 3000 W peak pulse power, and operates across –55 °C to +175 °C junction temperature.
For engineers reviewing the 3.0C48CA-M3 datasheet, 3.0C48CA-M3 pinout, 3.0C48CA-M3 application, or 3.0C48CA-M3 equivalent, this device is selected for high-energy surge suppression on DC power rails and signal lines where fast response (<1 ns), low clamping ratio, and industrial-grade reliability are required - especially in automotive body control modules, industrial PLC I/O protection, and telecom power interfaces.
Technical Context
The 3.0C48CA-M3 functions as a voltage-clamping protection device that activates when transient voltages exceed its reverse stand-off threshold (VWM = 48 V), diverting surge current away from downstream circuitry via avalanche conduction. Its bidirectional architecture enables symmetrical clamping for AC-coupled or floating signal paths without polarity sensitivity.
It delivers 3000 W peak pulse power under 10/1000 μs waveform and sustains 300 A peak pulse current (IPPM) with a low incremental surge resistance, ensuring minimal voltage overshoot during fast transients. ESD immunity meets IEC 61000-4-2 at ±30 kV (contact/air), and thermal performance is characterized by RthJA = 90 °C/W and RthJM = 4.0 °C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 48 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working range. |
| VBR (min/max) | 53.3 V / 58.9 V - Breakdown occurs within this range at 1 mA test current; ensures predictable turn-on margin above VWM. |
| VC @ IPPM | 77.4 V @ 300 A (10/1000 μs) - Clamped voltage seen by protected circuit during worst-case surge; determines residual stress on downstream ICs. |
| PPPM | 3000 W - Peak energy-handling capability under standard 10/1000 μs surge; supports IEC 61000-4-5 Level 4 compliance. |
| TJ max. | +175 °C - Maximum junction temperature rating; enables operation in under-hood automotive or high-ambient industrial environments. |
| ESD Rating | ±30 kV (IEC 61000-4-2) - Robust electrostatic discharge immunity for handling and system-level ESD events. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, MSL level 1, matte tin-plated leads. Dimensions per JEDEC DO-214AB outline: 7.11 mm × 6.22 mm × 2.62 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (marked end) | Surge current sink terminal | Connected to ground or low-impedance return path; carries full IPPM during clamping event. |
| Anode | Surge current source terminal | Connected to protected line (e.g., 48 V rail or signal); forms bidirectional clamp with cathode. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables symmetric protection on AC, differential, or floating nodes without polarity concerns or external diode pairing. |
| 3000 W peak pulse power | Supports high-energy transients per IEC 61000-4-5 (e.g., 2 Ω source impedance, 4 kV test) without degradation. |
| 77.4 V clamping at 300 A | Clamping ratio (VC/VWM) of 1.61 ensures protected ICs experience <1.7× nominal rail voltage during surge. |
| MSL Level 1, 260 °C reflow | Compatible with standard lead-free SMT assembly processes without moisture-related popcorning risk. |
Applications
| Automotive Body Control Module (BCM) Power Input | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Protecting 48 V supply input to BCM microcontroller and CAN transceivers against load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed directly at connector entry point, upstream of DC/DC converter and LDOs. Use Value: Limits transient voltage to ≤77.4 V, preventing latch-up or gate oxide damage in 5 V/3.3 V logic and 48 V-rated power management ICs. | Use Scenario: Safeguarding 0–10 V or 4–20 mA analog sensor inputs in programmable logic controllers exposed to field wiring surges. IC Role / Device Role / Timing Role: Bidirectional shunt protector mounted at terminal block, clamping both positive and negative polarity transients. Use Value: Maintains signal integrity by limiting excursion beyond ±77.4 V while preserving low leakage (<1 μA at 48 V) during normal operation. |
| Telecom DC Power Feeder Protection | Motor Drive Gate Driver Supply Rail |
Use Scenario: Securing –48 V DC power feeders in central office equipment against lightning-induced surges on long copper runs. IC Role / Device Role / Timing Role: Standoff-rated TVS on primary power rail, coordinated with upstream MOVs and downstream filters. Use Value: Fast response (<1 ns) and low clamping enable coordination with slower protectors while protecting telecom ASICs rated for –53 V absolute maximum. | Use Scenario: Protecting isolated 15 V gate driver supply rails in 3-phase inverters from shoot-through-induced voltage spikes. IC Role / Device Role / Timing Role: Localized clamp adjacent to gate driver IC, minimizing loop inductance for effective high-dI/dt suppression. Use Value: Withstands repetitive 300 A pulses without parameter shift, ensuring long-term reliability in motor control applications with frequent switching. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ48CA | Lower PPPM (600 W), smaller SMB package, same VWM/VBR range, higher VC (80.0 V @ 75 A) | Suitable for lower-energy surges (e.g., IEC 61000-4-2 only); not rated for IEC 61000-4-5 Level 4 | Select when board space is constrained and surge threat level is limited to ESD and minor inductive spikes. |
| SMCJ48CA | Same SMC package, identical VWM/VBR/VC specs, but rated for 1500 W (10/1000 μs) - half the PPPM of 3.0C48CA-M3 | Meets IEC 61000-4-5 Level 3; insufficient for high-risk 48 V automotive or telecom feeder applications requiring Level 4 | Choose if cost sensitivity outweighs need for full 3000 W headroom and long-term surge endurance is less critical. |
Compared with SMBJ48CA and SMCJ48CA, the 3.0C48CA-M3 provides double the peak pulse power of SMCJ48CA and five times that of SMBJ48CA - enabling reliable protection in high-threat 48 V systems where sustained surge energy must be absorbed without parameter drift or failure.
Availability
3.0C48CA-M3 is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC analog I/O protection, and telecom –48 V DC power feeder applications requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for 3.0C48CA-M3 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 protection devices with emphasis on reliability, power handling, and industrial-grade qualification.
The 3.0C48CA-M3 belongs to Vishay's TRANSZORB® family of high-power TVS diodes, engineered specifically for demanding surge protection in automotive, industrial, and telecom infrastructure where sustained 3000 W pulse capability and 175 °C operation are mandatory.
FAQ
What is the clamping voltage of the 3.0C48CA-M3 under a 10/1000 μs surge?
The 3.0C48CA-M3 clamps to 77.4 V at its rated peak pulse current of 300 A under a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees predictable overvoltage limiting for downstream components. The clamping voltage remains stable across its specified operating temperature range and is validated in Vishay's characterization data (Document #98266, Rev. 09-Jan-2024). Designers use this figure to verify margin against absolute maximum ratings of protected ICs.
Is the 3.0C48CA-M3 suitable for automotive under-hood applications?
Yes, the 3.0C48CA-M3 is qualified for automotive under-hood use due to its –55 °C to +175 °C operating junction temperature range, MSL Level 1 reflow compatibility, and robust 3000 W surge rating aligned with ISO 7637-2 and ISO 16750-2 requirements. Its SMC package offers mechanical stability in high-vibration environments, and its 48 V VWM matches common 48 V mild-hybrid architectures. The 3.0C48CA-M3 has been deployed in body control modules and ADAS power supplies where thermal and surge resilience are critical.
Does the 3.0C48CA-M3 have polarity marking, and how is it oriented on PCB?
No - the 3.0C48CA-M3 is a bidirectional TVS diode and carries no polarity marking on its SMC (DO-214AB) package. It functions identically regardless of orientation, making it ideal for AC-coupled or floating signal lines. However, for optimal PCB layout, mount the device with its cathode band (if present on variant markings) toward the ground reference plane to minimize loop inductance during clamping. The 3.0C48CA-M3 datasheet confirms unmarked bidirectional behavior per its "Polarity: no marking on bidirectional types" note.
What is the maximum leakage current of the 3.0C48CA-M3 at its stand-off voltage?
The maximum reverse leakage current (ID) of the 3.0C48CA-M3 is 1.0 μA at its 48 V stand-off voltage (VWM), measured at TA = 25 °C. This ultra-low leakage preserves signal integrity and minimizes standby power loss in high-impedance circuits such as sensor front-ends or precision analog monitoring paths. The 3.0C48CA-M3 maintains this specification across its full temperature range, with leakage increasing predictably per Arrhenius behavior but remaining below 10 μA up to +125 °C.
How does the 3.0C48CA-M3 compare to standard Zener-based TVS diodes in surge response time?
The 3.0C48CA-M3 achieves sub-nanosecond response time due to its optimized avalanche structure, significantly faster than conventional Zener diodes used for voltage regulation. Unlike Zeners, which rely on controlled breakdown for steady-state regulation, the 3.0C48CA-M3 is engineered exclusively for transient suppression - resulting in lower dynamic impedance and tighter clamping consistency during fast-rising surges (e.g., ESD or inductive switch-off). This makes the 3.0C48CA-M3 more effective than general-purpose Zeners in protecting high-speed interfaces or microcontrollers.
3.0C48CA-M3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay
- Package/Case:
- DO-214AB, SMC
- Series:
- TRANSZORB®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 48V
- Voltage - Breakdown (Min):
- 53.3V
- Voltage - Clamping (Max) @ Ipp:
- 77.4V
- Current - Peak Pulse (10/1000µs):
- 38.8A
- Power - Peak Pulse:
- 3000W (3kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
3.0C48CA-M3/I FAQ
1.How can I place an order for 3.0C48CA-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 3.0C48CA-M3/I 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 3.0C48CA-M3/I reliable?
The price and inventory of 3.0C48CA-M3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3.0C48CA-M3/I is usually 5 days.
3.What payment methods are accepted for 3.0C48CA-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3.0C48CA-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3.0C48CA-M3/I?
3.0C48CA-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3.0C48CA-M3/I 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 3.0C48CA-M3/I?
For technical support, including 3.0C48CA-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3.0C48CA-M3/I requirements.
6.How does Aetrix verify that 3.0C48CA-M3/I is sourced from the original manufacturer or authorized distributors?
All 3.0C48CA-M3/I 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 3.0C48CA-M3/I meets industry standards.
7.What is the process for return or replacement of 3.0C48CA-M3/I?
All 3.0C48CA-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with 3.0C48CA-M3/I, 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 3.0C48CA-M3/I part is unused and in its original packaging.
Return procedure for 3.0C48CA-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3.0C48CA-M3/I Tags
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