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Vishay General Semiconductor - Diodes Division SMPC22ANHM3/I
- Part No.:
- SMPC22ANHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
SMPC22ANHM3/I.pdf
- Description:
- TVS DIODE 22VWM 35.5VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:4,707
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Product details
Overview
SMPC22ANHM3/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 22 V stand-off voltage (VWM), 24.4–26.9 V breakdown voltage (VBR), 1500 W peak pulse power (PPPM), and low clamping voltage of 35.5 V at 42.3 A, making it suitable for automotive-grade ESD and load-dump protection in sensor interfaces and power rails.
For engineers reviewing the SMPC22ANHM3/I datasheet, SMPC22ANHM3/I pinout, SMPC22ANHM3/I application, or SMPC22ANHM3/I equivalent, this device is evaluated for AEC-Q101 qualified transient suppression in automotive ECUs, industrial I/O modules, and telecom power supplies where robust 10/1000 μs surge handling and MSL Level 1 reflow compatibility are required.
Technical Context
The SMPC22ANHM3/I operates as a unidirectional avalanche diode with cathode-band polarity marking, optimized for fast response to transients induced by inductive switching or lightning surges. Its TO-277A (SMPC) package enables dual-anode/dual-cathode configuration-specifically configured as cathode-on-heatsink per Vishay's SMPCxxAN series layout-supporting thermal management in high-power dissipation scenarios.
It delivers 1.25 W steady-state power dissipation at 25 °C ambient, with junction temperature rated up to +150 °C and thermal resistance RθJA ≤ 100 °C/W on FR4 PCB. The device meets JESD201 Class 2 whisker resistance and is halogen-free, RoHS-compliant, and AEC-Q101 qualified-exclusively for SMPC22AN through SMPC85AN variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 24.4 V / 26.9 V at 1 mA - ensures reliable avalanche initiation within tight tolerance band |
| VC at IPPM | 35.5 V at 42.3 A - clamping voltage under 10/1000 μs surge defines protected circuit stress level |
| PPPM | 1500 W - peak pulse power rating determines survivability against ISO 7637-2 Pulse 5a/b surges |
| TJ max | +150 °C - enables operation in under-hood automotive environments without derating |
| Package | SMPC (TO-277A) - surface-mount, low-profile (1.1 mm height), MSL Level 1 compatible |
| Polarity | Unidirectional - cathode band denotes terminal; supports DC-biased rail protection only |
Pinout & Package
SMPC22ANHM3/I uses the SMPC (TO-277A) package: a 3-terminal, low-profile surface-mount outline conforming to JEDEC TO-277A, with matte tin-plated leads solderable per J-STD-002 and JESD22-B102. Polarity is marked by a cathode band; mechanical drawings confirm cathode terminal orientation aligned with band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 / Anode 2 | Common anode connection | Internally tied anodes enable single-point grounding; used when cathode is mounted to heatsink |
| Cathode | Surge current sink path | Band-marked terminal; connects to protected line; must be thermally coupled to heatsink for rated PPPM |
Key Features
| Feature | Design Value |
|---|---|
| Very low profile (1.1 mm height) | Enables use in space-constrained automotive modules and portable industrial sensors |
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS sensor hubs |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 16750-2 load dump) |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without moisture sensitivity concerns |
| Halogen-free & RoHS-compliant | Fulfills environmental compliance requirements for global OEM supply chains |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply inputs in body control modules against ISO 7637-2 Pulse 5a (load dump) and Pulse 1 (inductive switch-off). IC Role / Device Role / Timing Role: Unidirectional TVS clamps transient overvoltage to <36 V, preventing damage to downstream DC/DC converters and microcontrollers. Use Value: With 1500 W PPPM and 35.5 V clamping, SMPC22ANHM3/I limits stress on 36 V-rated input stages while maintaining system uptime. | Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loops) in factory automation sensors exposed to ESD and cable discharge events. IC Role / Device Role / Timing Role: Fast-response TVS shunts >8 kV HBM ESD pulses away from precision op-amps and ADC front-ends. Use Value: Sub-1 ns response time and low leakage (<1 μA at 22 V) preserve signal integrity and measurement accuracy. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Securing -48 V DC backup power inputs in telecom base station power distribution units against lightning-induced surges. IC Role / Device Role / Timing Role: Cathode-on-heatsink configuration allows direct mounting to metal chassis for efficient thermal dissipation during repeated 10/1000 μs surges. Use Value: 1500 W rating and RθJM ≤ 3 °C/W ensure stable clamping performance across extended surge duty cycles. | Use Scenario: Suppressing flyback spikes from brushed DC motors in smart home appliances (e.g., vacuum cleaners, washing machines). IC Role / Device Role / Timing Role: Mounted across motor terminals to clamp inductive kickback before it reaches MCU GPIOs or driver ICs. Use Value: 22 V VWM matches typical 24 V motor supply rails; 35.5 V VC prevents latch-up in 3.3 V/5 V logic circuits sharing ground. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22A-M3/86A | Same VWM (22 V), lower PPPM (400 W), SMA package (higher RθJA ≈ 150 °C/W) | Limited to lower-energy transients; not AEC-Q101 qualified | Select for cost-sensitive consumer designs where 1500 W surge immunity is unnecessary |
| SMCJ22A-HM3 | Same VWM (22 V), identical PPPM (1500 W), but SMC package (higher profile, 2.3 mm height) | Compatible with legacy SMC footprints; less suitable for ultra-thin automotive modules | Select when board real estate allows taller profile and existing SMC layout reuse is prioritized |
Compared with SMAJ22A-M3/86A and SMCJ22A-HM3, SMPC22ANHM3/I uniquely combines AEC-Q101 qualification, TO-277A low-profile packaging, and 1500 W surge capability-making it the optimal choice for next-generation automotive and space-constrained industrial power protection.
Availability
SMPC22ANHM3/I is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and telecom power supplies requiring stable component supply, long-term lifecycle support, and AEC-Q101 compliance.
Supply support for SMPC22ANHM3/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, efficiency, and application-specific optimization.
The SMPC series belongs to Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in automotive, industrial, and telecom infrastructure where AEC-Q101 validation and compact thermal design are critical.
FAQ
What is the exact breakdown voltage range for SMPC22ANHM3/I?
The SMPC22ANHM3/I has a specified breakdown voltage (VBR) range of 24.4 V to 26.9 V at 1 mA test current, measured per ANSI/IEEE C62.35 standards. This tight tolerance ensures consistent clamping behavior across production lots and supports precise overvoltage margining in 24 V system designs. The value is confirmed in Vishay Document Number 89116, Table on page 2.
Is SMPC22ANHM3/I qualified for automotive use?
Yes, SMPC22ANHM3/I is AEC-Q101 qualified, as explicitly stated in the Vishay datasheet (Document Number 89116, Revision 17-Sep-2021). The "HM3" suffix denotes halogen-free, RoHS-compliant, and AEC-Q101 qualified construction-valid for SMPC22AN through SMPC85AN variants only. This qualification covers stress testing for temperature cycling, humidity, and mechanical shock relevant to automotive under-hood deployment.
What does the "I" suffix mean in SMPC22ANHM3/I?
The "I" suffix in SMPC22ANHM3/I indicates the preferred package code for 13-inch diameter plastic tape and reel delivery, containing 6500 units per reel. This is distinct from the "H" suffix (7-inch reel, 1500 units), as defined in Vishay's Ordering Information table on page 3 of Document Number 89116. Both share identical electrical and thermal specifications.
How is thermal performance affected when SMPC22ANHM3/I is mounted without a heatsink?
When mounted on a standard FR4 PCB (2 oz. copper, no external heatsink), SMPC22ANHM3/I exhibits RθJA ≤ 100 °C/W. At 1.25 W steady-state dissipation, this results in ~125 °C junction rise above ambient-approaching its 150 °C TJ max limit. For reliable long-term operation, Vishay recommends cathode-side mounting to a metal heatsink to leverage RθJM ≤ 3 °C/W, especially under pulsed surge conditions.
Can SMPC22ANHM3/I be used in bidirectional configurations?
No, SMPC22ANHM3/I is strictly unidirectional, as confirmed by its designation in the SMPCxxAN family and datasheet notes. It conducts only when cathode is positive relative to anodes. For bidirectional AC-line protection, Vishay offers separate SMPCxxCA variants. Using SMPC22ANHM3/I in reverse-biased AC applications risks permanent failure due to lack of reverse avalanche capability.
SMPC22ANHM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- TO-277, 3-PowerDFN
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 22V
- Voltage - Breakdown (Min):
- 24.4V
- Voltage - Clamping (Max) @ Ipp:
- 35.5V
- Current - Peak Pulse (10/1000µs):
- 42.3A
- 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)
SMPC22ANHM3/I FAQ
1.How can I place an order for SMPC22ANHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMPC22ANHM3/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 SMPC22ANHM3/I reliable?
The price and inventory of SMPC22ANHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMPC22ANHM3/I is usually 5 days.
3.What payment methods are accepted for SMPC22ANHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMPC22ANHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMPC22ANHM3/I?
SMPC22ANHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMPC22ANHM3/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 SMPC22ANHM3/I?
For technical support, including SMPC22ANHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMPC22ANHM3/I requirements.
6.How does Aetrix verify that SMPC22ANHM3/I is sourced from the original manufacturer or authorized distributors?
All SMPC22ANHM3/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 SMPC22ANHM3/I meets industry standards.
7.What is the process for return or replacement of SMPC22ANHM3/I?
All SMPC22ANHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMPC22ANHM3/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 SMPC22ANHM3/I part is unused and in its original packaging.
Return procedure for SMPC22ANHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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