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Vishay General Semiconductor - Diodes Division SMPC43ANHM3/H
- Part No.:
- SMPC43ANHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
SMPC43ANHM3/H.pdf
- Description:
- TVS DIODE 43VWM 69.4VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:2,007
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Product details
Overview
SMPC43ANHM3/H 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 43.0 V stand-off voltage (VWM), 69.4 V maximum clamping voltage (VC) at 21.6 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with a 10/1000 μs waveform - deployed in automotive sensor interfaces and industrial power supply rails.
For engineers reviewing the SMPC43ANHM3/H datasheet, SMPC43ANHM3/H pinout, SMPC43ANHM3/H application, or SMPC43ANHM3/H equivalent, key selection criteria include AEC-Q101 qualification, TO-277A (SMPC) package compatibility, unidirectional polarity, low-profile 1.1 mm height, and thermal resistance (RθJA ≤ 100 °C/W) for FR4 PCB mounting.
Technical Context
This device operates as a silicon avalanche diode optimized for fast-response transient suppression. Its unidirectional configuration enables integration in DC-biased circuits where reverse conduction must be blocked until breakdown threshold is exceeded. The SMPC43ANHM3/H uses a dual-anode/single-cathode layout in the SMPC (TO-277A) package, supporting heat dissipation via cathode-side mounting per JEDEC 51-14 TDIM methodology.
It delivers stable clamping performance across -55 °C to +150 °C junction temperature range, with <1.0 μA reverse leakage at VWM and 1.25 W steady-state power dissipation at TA = 25 °C. The device meets MSL Level 1 per J-STD-020 and passes JESD 201 Class 2 whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 43.0 V - maximum continuous reverse operating voltage before clamping initiates |
| VC @ IPPM | 69.4 V at 21.6 A - clamping voltage limits downstream circuit stress during 10/1000 μs surge |
| PPPM | 1500 W - peak surge energy handling capacity under standardized transient waveform |
| TJ max. | +150 °C - enables operation in under-hood automotive environments and industrial enclosures |
| RθJA | ≤100 °C/W - thermal resistance determines required PCB copper area for 1.25 W steady-state dissipation |
| Polarity | Unidirectional - blocks reverse current until breakdown; suitable for DC power rail protection |
| Package | SMPC (TO-277A) - surface-mount, low-profile (1.1 mm height), AEC-Q101 qualified variant |
Pinout & Package
SMPC43ANHM3/H uses the SMPC (TO-277A) package: 3-terminal surface-mount outline conforming to JEDEC TO-277A, with matte tin-plated leads, 1.1 mm typical height, and cathode band marking. Mounting pad layout requires 0.268" × 0.186" (6.80 mm × 4.72 mm) footprint on FR4 with 2 oz. copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 | Primary anode connection | Connected to protected line (e.g., 48 V supply rail); forms avalanche junction with cathode |
| Anode 2 | Secondary anode connection | Internally tied to Anode 1; provides parallel current path and enhanced surge robustness |
| Cathode | Common cathode terminal | Connected to ground or reference plane; marked by band; primary heat-sinking interface |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor modules |
| Low-profile 1.1 mm height | Enables use in space-constrained modules such as ECU daughterboards and compact power converters |
| Very fast response time | Sub-nanosecond clamping onset ensures protection of sensitive MOSFET gates and microcontroller I/O |
| Halogen-free & RoHS-compliant | Meets global environmental compliance requirements for industrial and automotive production |
| MSL Level 1 rating | Allows unlimited floor life and reflow up to 260 °C peak without preconditioning |
Applications
| Automotive Sensor Protection | Industrial Power Supply Rail |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and radar sensor front-ends from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor VCC line and chassis ground to clamp transients above 43 V. Use Value: Limits voltage excursion to ≤69.4 V during 21.6 A surges, preventing damage to 5 V or 3.3 V level-shifting ICs downstream. | Use Scenario: Safeguarding 48 V intermediate bus in PLC power modules against inductive switching spikes. IC Role / Device Role / Timing Role: Primary surge shunt on DC input stage, mounted with cathode to thermal pad for RθJM = 2.5 °C/W. Use Value: Absorbs 1500 W peak pulses without degradation, maintaining system uptime in factory automation environments. |
| Telecom DC Feeder Line | Consumer USB-C PD Interface |
Use Scenario: Securing remote radio unit (RRU) power feeds exposed to lightning-induced surges on outdoor telecom sites. IC Role / Device Role / Timing Role: First-line defense on -48 V DC feed line, paired with series impedance for coordinated protection. Use Value: Clamps 10/1000 μs surges to 69.4 V while sustaining 1.25 W continuous dissipation in sealed enclosures. | Use Scenario: Overvoltage protection on USB-C VBUS line in portable docking stations supporting 100 W PD. IC Role / Device Role / Timing Role: Unidirectional clamp between VBUS and GND, sized for 43 V standoff to avoid false triggering during 20 V PD negotiation. Use Value: Prevents latch-up in USB-C controller ICs during hot-plug transients while meeting IEC 61000-4-5 Level 4 immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ43A-H | DO-214AC package; 69.4 V VC same, but IPPM = 21.5 A; RθJA = 110 °C/W | Lower power density; less suitable for high-temperature automotive under-hood use | Select SMAJ43A-H only if board space allows larger footprint and thermal margin is relaxed. |
| SMCJ43A-H | DO-214AB package; same 43 V VWM and 69.4 V VC, but PPPM = 1500 W and RθJA = 90 °C/W | Higher profile (2.6 mm) limits use in ultra-thin modules; better thermal spread on large pads | Choose SMCJ43A-H when higher mechanical robustness is needed and 1.1 mm height constraint does not apply. |
Compared with SMAJ43A-H and SMCJ43A-H, SMPC43ANHM3/H offers the lowest profile (1.1 mm), AEC-Q101 qualification out-of-box, and optimized thermal performance for cathode-down mounting - making it the preferred choice for next-generation automotive ECUs and compact industrial controllers where space and reliability are co-constrained.
Availability
SMPC43ANHM3/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial power supply rails, telecom DC feeder lines, and consumer USB-C PD interfaces requiring stable component supply and long-term lifecycle support.
Supply support for SMPC43ANHM3/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, MOSFETs, and protection devices with emphasis on reliability and automotive-grade validation.
The SMPC series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in harsh environments - targeting AEC-Q101-compliant automotive subsystems and ruggedized industrial power electronics.
FAQ
What is the clamping voltage of SMPC43ANHM3/H at its rated peak pulse current?
The SMPC43ANHM3/H has a maximum clamping voltage (VC) of 69.4 V at its rated peak pulse current (IPPM) of 21.6 A under a 10/1000 μs waveform. This value is measured with the cathode mounted to a heatsink per JEDEC 51-14, ensuring repeatable thermal conditions. The clamping behavior is critical for limiting voltage stress on downstream components like microcontrollers or gate drivers in the SMPC43ANHM3/H-protected circuit.
Is SMPC43ANHM3/H qualified for automotive applications?
Yes, SMPC43ANHM3/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3" and documentation stating AEC-Q101 qualification applies to SMPC22AN through SMPC85AN variants. This qualification covers stress tests including temperature cycling, humidity bias HAST, and mechanical shock - validating SMPC43ANHM3/H for use in engine control units, body electronics, and ADAS sensor modules.
What does the "H" in SMPC43ANHM3/H signify in the ordering code?
The "H" in SMPC43ANHM3/H denotes the preferred package code for 7-inch diameter plastic tape and reel delivery, containing 1500 units per reel. It is distinct from "I", which indicates 13-inch reels with 6500 units. The "HM3" base suffix confirms halogen-free, RoHS-compliant, and AEC-Q101-qualified construction, while "H" specifies the reel format - essential for automated SMT line setup and inventory planning for SMPC43ANHM3/H.
How does the SMPC (TO-277A) package of SMPC43ANHM3/H improve thermal performance over standard SMB/SMA packages?
The SMPC (TO-277A) package of SMPC43ANHM3/H achieves RθJM = 2.5 °C/W (typical) when the cathode is mounted to a thermal pad, significantly lower than SMB (RθJM ≈ 15–20 °C/W) or SMA (RθJM ≈ 12–16 °C/W). This is enabled by its dual-anode/single-cathode structure and optimized die attach - allowing SMPC43ANHM3/H to sustain higher surge duty cycles in thermally constrained layouts without exceeding TJ max. of 150 °C.
Can SMPC43ANHM3/H be used in bidirectional configurations?
No, SMPC43ANHM3/H is strictly unidirectional, as specified in its PRIMARY CHARACTERISTICS table and FEATURES section. It conducts only when the cathode is biased positive relative to both anodes. For bidirectional protection, Vishay offers separate SMPCxxCA variants - using SMPC43ANHM3/H in AC or floating applications risks failure due to reverse conduction beyond its rated IR limit. Always verify polarity alignment in schematic capture for SMPC43ANHM3/H.
SMPC43ANHM3/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):
- 43V
- Voltage - Breakdown (Min):
- 47.8V
- Voltage - Clamping (Max) @ Ipp:
- 69.4V
- Current - Peak Pulse (10/1000µs):
- 21.6A
- 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)
SMPC43ANHM3/H FAQ
1.How can I place an order for SMPC43ANHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMPC43ANHM3/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 SMPC43ANHM3/H reliable?
The price and inventory of SMPC43ANHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMPC43ANHM3/H is usually 5 days.
3.What payment methods are accepted for SMPC43ANHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMPC43ANHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMPC43ANHM3/H?
SMPC43ANHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMPC43ANHM3/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 SMPC43ANHM3/H?
For technical support, including SMPC43ANHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMPC43ANHM3/H requirements.
6.How does Aetrix verify that SMPC43ANHM3/H is sourced from the original manufacturer or authorized distributors?
All SMPC43ANHM3/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 SMPC43ANHM3/H meets industry standards.
7.What is the process for return or replacement of SMPC43ANHM3/H?
All SMPC43ANHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMPC43ANHM3/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 SMPC43ANHM3/H part is unused and in its original packaging.
Return procedure for SMPC43ANHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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