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Vishay General Semiconductor - Diodes Division SMPC30ANHM3/I
- Part No.:
- SMPC30ANHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
SMPC30ANHM3/I.pdf
- Description:
- TVS DIODE 30VWM 48.4VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:2,708
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Product details
Overview
SMPC30ANHM3/I from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in the TRANSZORB® family, designed for high-energy surge protection on power and signal lines. It features a 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, 1500 W peak pulse power (10/1000 μs), and AEC-Q101 qualification for automotive use.
For engineers reviewing the SMPC30ANHM3/I datasheet, SMPC30ANHM3/I pinout, SMPC30ANHM3/I application, or SMPC30ANHM3/I equivalent, this device is selected for robust overvoltage protection in automotive ECUs, industrial sensor interfaces, DC power rails, and MOSFET gate drive circuits where low-profile SMT placement and MSL Level 1 reliability are required.
Technical Context
The SMPC30ANHM3/I operates as a unidirectional avalanche diode with cathode-band polarity marking, optimized for fast response to transients induced by inductive load switching or ESD events. Its TO-277A (SMPC) package enables dual-anode/dual-cathode terminal configuration for enhanced thermal dissipation and symmetrical PCB layout routing.
It delivers 1.25 W steady-state power dissipation at 25 °C ambient on FR4 with 2 oz copper, and supports junction temperatures from –55 °C to +150 °C. Thermal resistance is rated at RθJA ≤ 100 °C/W and RθJM ≤ 3.0 °C/W, confirming suitability for thermally constrained automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30.0 V - Maximum reverse operating voltage before clamping begins; defines safe working range for 24 V automotive systems. |
| VBR min/max | 33.3 V / 36.8 V - Breakdown occurs within this range at 1.0 mA test current; ensures consistent turn-on across production lots. |
| VC @ IPPM | 48.4 V - Clamping voltage at 31.0 A peak pulse; limits downstream voltage stress during ISO 7637-2 Pulse 1/2a/5a events. |
| PPPM | 1500 W - Peak pulse power handling (10/1000 μs waveform); meets IEC 61000-4-5 Level 4 surge immunity requirements. |
| Package | SMPC (TO-277A) - 3-terminal surface-mount package with 1.1 mm typical height; enables automated placement and AEC-Q101-compliant automotive assembly. |
| Polarity | Unidirectional - Cathode band denotes polarity; used for DC-biased lines where reverse conduction must be blocked. |
| TJ max | +150 °C - Maximum junction temperature; supports under-hood operation in engine control units and ADAS modules. |
Pinout & Package
SMPC30ANHM3/I uses the SMPC (TO-277A) package: a 3-terminal, low-profile surface-mount outline with cathode band marking. Dimensions conform to JEDEC TO-277A standard (4.80 × 3.70 × 1.10 mm). Mounting pad layout requires 6.80 mm × 4.72 mm footprint with 1.27 mm minimum solder mask clearance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 / Anode 2 | Common anode connection | Internally tied anodes allow single-point grounding; simplifies PCB routing and improves thermal symmetry during surge events. |
| Cathode | Transient current sink | Band-marked cathode terminal conducts surge current to ground when VREV exceeds VWM; must connect to low-impedance chassis or power ground. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS; includes temperature cycling, HTRB, and ESD testing per JESD47. |
| MSL Level 1 | Rated for reflow up to 260 °C peak; eliminates moisture sensitivity concerns and enables standard lead-free assembly without baking. |
| Low profile (1.1 mm) | Enables integration into space-constrained modules such as camera housings, radar sensors, and compact motor drivers. |
| Halogen-free & RoHS | Complies with automotive material compliance standards (Vishay Doc. #99912); supports sustainability and regulatory requirements in EU and global markets. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 16750-2 load dump), improving protection margin for downstream ICs. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Sensor Interface |
|---|---|
Use Scenario: Protects microcontroller I/O and CAN transceiver power rails from load dump and alternator ripple in 12 V/24 V vehicle electrical systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery feed and LDO input to clamp surges before regulation stage. Use Value: Withstands 1500 W pulses and clamps at 48.4 V, ensuring downstream 5 V/3.3 V logic remains below absolute maximum ratings during ISO 7637-2 Pulse 5a. | Use Scenario: Shields analog front-end circuitry of pressure/temperature sensors in factory automation equipment exposed to relay coil flyback and motor drive noise. IC Role / Device Role / Timing Role: Mounted directly at sensor connector entry point to divert transient energy before reaching precision ADC inputs. Use Value: 30.0 V VWM matches common 24 V industrial supply rails; 1.1 mm height allows placement adjacent to miniaturized sensor PCB edge connectors. |
| DC Motor Drive Power Stage | MOSFET Gate Protection |
Use Scenario: Suppresses inductive kickback from brushed DC motors in robotics and HVAC actuators, preventing damage to half-bridge driver ICs. IC Role / Device Role / Timing Role: Connected across motor terminals (VCC–GND) to absorb stored inductive energy during PWM turn-off. Use Value: 1500 W PPPM rating handles repetitive 10/1000 μs surges from commutation; TO-277A package provides lower thermal resistance than SMA for sustained duty cycles. | Use Scenario: Prevents gate oxide failure in N-channel power MOSFETs due to ESD or Miller-induced voltage spikes during high-speed switching. IC Role / Device Role / Timing Role: Placed between gate and source terminals to clamp transient voltages exceeding ±20 V absolute maximum rating. Use Value: Fast response time and low clamping voltage (48.4 V) limit gate-source overvoltage without adding significant capacitance that would slow 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 |
|---|---|---|---|
| SMAJ30AHE3/5BT | Same VWM (30 V) and PPPM (1500 W), but SMA package (2.5 mm height); not AEC-Q101 qualified. | Acceptable for industrial/commercial designs where automotive qualification is not required. | Select SMAJ30AHE3/5BT only if board height budget allows ≥2.5 mm and AEC-Q101 is unnecessary. |
| SMCJ30AHM3/A | Higher PPPM (3000 W), same VWM and AEC-Q101 qualification, but larger SMC (DO-214AB) package (2.6 mm height). | Suitable for higher-energy surge environments (e.g., heavy-duty truck ECUs) where space permits. | Choose SMCJ30AHM3/A when system-level surge testing exceeds 1500 W requirements and PCB real estate allows larger footprint. |
Compared with SMAJ30AHE3/5BT and SMCJ30AHM3/A, the SMPC30ANHM3/I uniquely balances AEC-Q101 compliance, ultra-low 1.1 mm profile, and 1500 W surge capability-making it optimal for next-generation automotive modules where height and qualification are non-negotiable.
Availability
SMPC30ANHM3/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and DC motor drive power stages requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.
Supply support for SMPC30ANHM3/I 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, automotive qualification, and high-volume manufacturability.
The SMPC series belongs to Vishay's TRANSZORB® TVS platform, engineered specifically for high-power, low-profile transient suppression in automotive and industrial environments where space, thermal performance, and AEC-Q101 compliance are critical.
FAQ
What is the clamping voltage of SMPC30ANHM3/I at its rated peak pulse current?
The SMPC30ANHM3/I has a maximum clamping voltage (VC) of 48.4 V at 31.0 A peak pulse current (IPPM) under 10/1000 μs waveform conditions. This value is measured with cathode mounted to heatsink per datasheet test condition, and ensures downstream components remain within safe operating voltage limits during standardized surge events like ISO 7637-2 Pulse 5a. The SMPC30ANHM3/I maintains this clamping performance across its full operating temperature range.
Is SMPC30ANHM3/I qualified for automotive applications?
Yes, the SMPC30ANHM3/I is AEC-Q101 qualified, as confirmed by Vishay's documentation (Document #89116, Revision 17-Sep-2021). The "HM3" suffix explicitly denotes AEC-Q101 qualification, halogen-free construction, and RoHS compliance. It is approved for use in automotive subsystems including engine control, body electronics, and ADAS modules where reliability under thermal cycling, humidity, and mechanical stress is mandatory. The SMPC30ANHM3/I undergoes full stress testing per JESD47 requirements.
What does the "I" suffix mean in SMPC30ANHM3/I?
The "I" suffix in SMPC30ANHM3/I indicates packaging in 13-inch diameter plastic tape and reel, with a base quantity of 6500 units per reel. This delivery mode supports high-volume SMT assembly lines using standard 13″ feeder systems. The "I" does not affect electrical or thermal specifications-it is purely a packaging and logistics designation, distinct from the "H" (7″ reel, 1500 units) option. Both "H" and "I" variants share identical die, construction, and AEC-Q101 qualification for the SMPC30ANHM3/I part number.
How does the SMPC30ANHM3/I differ from the non-HM3 version SMPC30A?
The SMPC30ANHM3/I is AEC-Q101 qualified, halogen-free, and RoHS-compliant, whereas the base SMPC30A (without HM3) is industrial-grade only and lacks automotive qualification. The "N" in SMPC30AN indicates dual-cathode/anode configuration (TO-277A), while "HM3" adds AEC-Q101, material compliance, and whisker-tested matte tin plating. Electrically, both share identical VWM (30.0 V), VBR (33.3–36.8 V), and PPPM (1500 W), but only SMPC30ANHM3/I is approved for automotive production use per Vishay's ordering matrix.
What is the thermal resistance specification for SMPC30ANHM3/I?
The SMPC30ANHM3/I has a maximum junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on a standard FR4 PCB with 2 oz copper and the recommended pad layout. Its junction-to-mount thermal resistance (RθJM) is ≤ 3.0 °C/W, measured using JEDEC 51-14 TDIM methodology. These values enable reliable operation at full 1.25 W steady-state power dissipation up to +25 °C ambient, with derating above that temperature per Figure 2 in the datasheet. The SMPC30ANHM3/I's low RθJM supports effective heat transfer when cathode is soldered to a thermal pad.
SMPC30ANHM3/I 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-277A (SMPC)
SMPC30ANHM3/I FAQ
1.How can I place an order for SMPC30ANHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMPC30ANHM3/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 SMPC30ANHM3/I reliable?
The price and inventory of SMPC30ANHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMPC30ANHM3/I is usually 5 days.
3.What payment methods are accepted for SMPC30ANHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMPC30ANHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMPC30ANHM3/I?
SMPC30ANHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMPC30ANHM3/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 SMPC30ANHM3/I?
For technical support, including SMPC30ANHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMPC30ANHM3/I requirements.
6.How does Aetrix verify that SMPC30ANHM3/I is sourced from the original manufacturer or authorized distributors?
All SMPC30ANHM3/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 SMPC30ANHM3/I meets industry standards.
7.What is the process for return or replacement of SMPC30ANHM3/I?
All SMPC30ANHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMPC30ANHM3/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 SMPC30ANHM3/I part is unused and in its original packaging.
Return procedure for SMPC30ANHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMPC30ANHM3/I Tags
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