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Vishay General Semiconductor - Diodes Division SMPC30AN-M3/H
- Part No.:
- SMPC30AN-M3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
SMPC30AN-M3/H.pdf
- Description:
- TVS DIODE 30VWM 48.4VC TO277A
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMPC30AN-M3/H from Vishay General Semiconductor is a unidirectional surface-mount TransZORB® transient voltage suppressor in the SMPC (TO-277A) package, with 30.0 V stand-off voltage (VWM), 33.3–36.8 V breakdown voltage (VBR), 48.4 V clamping voltage at 31.0 A peak pulse current, and 1500 W peak pulse power rating. It protects MOSFETs and signal lines in automotive sensor units against inductive switching transients.
For engineers reviewing the SMPC30AN-M3/H datasheet, SMPC30AN-M3/H pinout, SMPC30AN-M3/H application, or SMPC30AN-M3/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, 1.1 mm profile for space-constrained PCB layouts, and thermal resistance RθJA ≤ 100 °C/W on FR4.
Technical Context
This device operates as a silicon avalanche diode designed to clamp transient overvoltages before they damage downstream circuitry. Its unidirectional configuration enables protection of DC-biased lines such as power rails and gate drivers, with fast response time and low incremental surge resistance ensuring effective suppression of 10/1000 μs waveform surges.
The SMPC30AN-M3/H uses a dual-anode/single-cathode internal structure (per SMPCxxAN marking convention), where both anodes are electrically common and connected to the cathode via a single junction. It is rated for TJ = –55 °C to +150 °C and meets J-STD-020 MSL Level 1 reflow compatibility with 260 °C peak temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30.0 V - maximum reverse working voltage before leakage exceeds 1.0 μA; sets upper limit for continuous DC bias |
| VBR min/max | 33.3 V / 36.8 V at 1.0 mA test current - defines guaranteed avalanche onset range under standardized conditions |
| VC at IPPM | 48.4 V at 31.0 A - clamped voltage during 10/1000 μs surge; determines maximum stress on protected IC |
| PPPM | 1500 W - peak pulse power handling capability; critical for IEC 61000-4-5 level 4 surge immunity designs |
| RθJA | ≤100 °C/W - thermal resistance junction-to-ambient on standard FR4; informs derating above 25 °C ambient |
| Polarity | Unidirectional - requires correct orientation relative to DC bias; cathode band denotes terminal 1 |
| Package | SMPC (TO-277A) - 3-terminal SMD outline with 1.1 mm typical height; optimized for automated placement |
Pinout & Package
SMPC30AN-M3/H uses the SMPC (TO-277A) package: a 3-terminal surface-mount case with cathode band marking terminal 1. The package has a nominal height of 1.1 mm, footprint dimensions of 4.80 × 3.70 mm, and matte tin-plated leads compliant with J-STD-002 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 (band side) | Cathode | Connected to system ground or low-side reference; must be routed to lowest impedance return path |
| Terminals 2 & 3 | Anodes (common) | Electrically tied together internally; connect to protected line (e.g., 30 V rail or sensor output) |
Key Features
| Feature | Design Value |
|---|---|
| Very low profile | 1.1 mm typical height - enables use in ultra-thin consumer electronics and automotive ECUs with strict Z-axis constraints |
| AEC-Q101 qualified | Qualified per automotive reliability standard - supports deployment in engine control, ADAS, and body electronics without additional qualification |
| Low incremental surge resistance | Enables tighter clamping (VC/VBR ratio = 1.45) - reduces voltage overshoot margin needed in protected IC's absolute maximum ratings |
| Halogen-free & RoHS-compliant | M3 suffix indicates industrial-grade compliance - satisfies environmental requirements for global OEM BOMs and industrial equipment |
| MSL Level 1 | Rated for peak reflow of 260 °C - eliminates need for moisture-sensitive handling or baking prior to assembly |
Applications
| Automotive Sensor Protection | Industrial Motor Drive Gate Protection |
|---|---|
Use Scenario: Protecting Hall-effect and crankshaft position sensors in engine control modules from load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor output and microcontroller input to clamp transients before they exceed MCU GPIO absolute max rating. Use Value: 48.4 V clamping at 31 A ensures sensor signal integrity remains intact during ISO 7637-2 Pulse 1/2b events without requiring series impedance redesign. | Use Scenario: Safeguarding high-side N-channel MOSFET gates driven by isolated gate drivers in servo inverters. IC Role / Device Role / Timing Role: TVS connected from gate-to-source to suppress Miller-induced voltage spikes during fast switching transitions. Use Value: 1.1 mm height allows placement directly adjacent to gate driver ICs on compact motor control PCBs without interfering with heatsink clearance. |
| Telecom Line Interface Protection | Computer Power Rail Clamping |
Use Scenario: Shielding RS-485 transceivers and Ethernet PHYs from ESD and lightning-induced surges on field wiring. IC Role / Device Role / Timing Role: Unidirectional TVS installed on biased data lines (e.g., VCC-referenced receiver inputs) to absorb differential-mode transients. Use Value: 1500 W PPPM rating supports compliance with ITU-T K.21 basic protection level for outdoor telecom equipment. | Use Scenario: Clamping 12 V and 24 V DC power rails feeding FPGAs and PMICs in embedded computing systems. IC Role / Device Role / Timing Role: Primary overvoltage protector placed upstream of bulk capacitors to limit rail excursions during hot-swap or backplane insertion events. Use Value: 30.0 V VWM aligns precisely with 24 V nominal rail systems, providing 25 % headroom before conduction while minimizing leakage at steady state. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30A-E3/57T | DO-214AC package; 33.3–36.8 V VBR; 48.4 V VC at 31.0 A; same PPPM but higher RθJA (150 °C/W) | Less suitable for high-density automotive PCBs due to larger footprint and 2.2 mm height | Select when legacy DO-214AC layout exists and thermal derating margins allow |
| SMCJ30A | DO-214AB package; identical electrical specs but 2.6 mm height and 7.1 mm length - 2.5× larger footprint | Not viable for space-constrained modules like ADAS camera ECUs or portable telecom gear | Choose only if board real estate is unconstrained and existing SMC footprint is leveraged |
Compared with SMAJ30A-E3/57T and SMCJ30A, SMPC30AN-M3/H delivers identical clamping performance in a 40 % smaller footprint and 50 % lower profile, enabling direct integration into next-generation automotive and industrial modules where Z-height and area are tightly budgeted.
Availability
SMPC30AN-M3/H is available at Aetrix Electronics and suitable for automotive sensor units, industrial motor drives, telecom line interfaces, and computer power rail clamping requiring stable component supply across multi-year production cycles.
Supply support for SMPC30AN-M3/H 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, and transient protection devices with emphasis on reliability and automotive-grade qualification.
The SMPC series was developed specifically for high-reliability surface-mount transient suppression in space- and thermally-constrained environments, targeting AEC-Q101-compliant automotive subsystems and industrial automation controls.
FAQ
What is the polarity configuration of SMPC30AN-M3/H?
SMPC30AN-M3/H is a unidirectional transient voltage suppressor. Its cathode is marked by a band on Terminal 1, and Terminals 2 and 3 are internally connected anodes. This configuration is intended for DC-biased circuits where reverse conduction must be blocked during normal operation, such as 30 V power rails or sensor output lines referenced to ground. The SMPC30AN-M3/H datasheet confirms unidirectional polarity in the PRIMARY CHARACTERISTICS table.
Is SMPC30AN-M3/H qualified for automotive applications?
Yes, SMPC30AN-M3/H is AEC-Q101 qualified, as confirmed in the Mechanical Data section and Ordering Information table of the Vishay document 89116. The "AN" suffix and "HM3" base ordering code denote AEC-Q101 qualification; however, SMPC30AN-M3/H uses the industrial-grade M3 suffix with halogen-free and RoHS-compliant construction. For full automotive qualification, the part number SMPC30ANHM3/H must be selected. SMPC30AN-M3/H itself is industrial grade.
What does the "/H" suffix indicate in SMPC30AN-M3/H?
The "/H" suffix in SMPC30AN-M3/H specifies the preferred package code for tape-and-reel delivery: 7-inch diameter plastic tape and reel, with a base quantity of 1500 units per reel. This is defined in the Ordering Information table of Vishay document 89116. The "/H" does not affect electrical or thermal specifications - it is purely a packaging and logistics designation for automated assembly lines.
How does SMPC30AN-M3/H compare to SMPC30A in terms of construction and application?
SMPC30AN-M3/H features the "AN" variant, meaning it uses the dual-anode/single-cathode internal configuration (Anode 1 + Anode 2 → Cathode), whereas SMPC30A uses the single-anode/dual-cathode configuration (Cathode 1 + Cathode 2 → Anode). This structural difference affects PCB layout and grounding strategy: SMPC30AN-M3/H places the cathode on Terminal 1 and common anodes on Terminals 2/3, making it optimal for protecting lines referenced to ground. SMPC30A is suited for positive-rail clamping with cathodes tied to the protected node.
What is the maximum clamping voltage of SMPC30AN-M3/H under surge conditions?
The maximum clamping voltage (VC) of SMPC30AN-M3/H is 48.4 V, measured at 31.0 A peak pulse current with a 10/1000 μs waveform, as specified in the Electrical Characteristics table of Vishay document 89116. This value represents the worst-case voltage seen by downstream components during a standardized surge event and is used to verify that protected ICs remain within their absolute maximum voltage ratings. SMPC30AN-M3/H maintains this clamping performance across its operating temperature range.
SMPC30AN-M3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- TO-277, 3-PowerDFN
- Series:
- TransZorb®, eSMP®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 30V
- Voltage - Breakdown (Min):
- 33.3V
- Voltage - Clamping (Max) @ Ipp:
- 48.4V
- Current - Peak Pulse (10/1000µs):
- 31A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-277A (SMPC)
SMPC30AN-M3/H FAQ
1.How can I place an order for SMPC30AN-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMPC30AN-M3/H 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 SMPC30AN-M3/H reliable?
The price and inventory of SMPC30AN-M3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMPC30AN-M3/H is usually 5 days.
3.What payment methods are accepted for SMPC30AN-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMPC30AN-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMPC30AN-M3/H?
SMPC30AN-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMPC30AN-M3/H 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 SMPC30AN-M3/H?
For technical support, including SMPC30AN-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMPC30AN-M3/H requirements.
6.How does Aetrix verify that SMPC30AN-M3/H is sourced from the original manufacturer or authorized distributors?
All SMPC30AN-M3/H 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 SMPC30AN-M3/H meets industry standards.
7.What is the process for return or replacement of SMPC30AN-M3/H?
All SMPC30AN-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMPC30AN-M3/H, 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 SMPC30AN-M3/H part is unused and in its original packaging.
Return procedure for SMPC30AN-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMPC30AN-M3/H Tags
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