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Vishay General Semiconductor - Diodes Division SMA5J22AHM3_A/H
- Part No.:
- SMA5J22AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J22AHM3_A/H.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,839
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Product details
Overview
SMA5J22AHM3_A/H from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on power and signal lines. It features 22 V stand-off voltage (VWM), 24.4–26.9 V breakdown voltage (VBR at 1 mA), 500 W peak pulse power (10/1000 μs), 14.1 A peak pulse current (IPPM), and clamps to ≤35.5 V at rated surge. It is halogen-free, RoHS-compliant, and qualified to AEC-Q101 for automotive electronics.
For engineers reviewing the SMA5J22AHM3_A/H datasheet, SMA5J22AHM3_A/H pinout, SMA5J22AHM3_A/H application, or SMA5J22AHM3_A/H equivalent, key selection criteria include clamping voltage margin vs. protected IC VDS/VCC, thermal derating above 25 °C, IPPM capability under 10/1000 μs transients, and AEC-Q101 qualification status for automotive deployment.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging a glass-passivated silicon junction for low leakage (<1.0 μA at 22 V) and fast response (<1 ns). Its 500 W PPPM rating is specified under JEDEC-standard 10/1000 μs waveform with derating above TA = 25 °C per Fig. 2.
Thermal performance is defined by RθJA = 80 °C/W (on 5.0 mm × 5.0 mm copper pads) and RθJL = 25 °C/W, enabling reliable operation up to TJ = 150 °C. The device meets MSL Level 1 (260 °C reflow peak) and JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - Maximum continuous reverse operating voltage before clamping begins; sets upper limit for circuit bias stability. |
| VBR (min/max) | 24.4 V / 26.9 V at 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | ≤35.5 V at 14.1 A - Clamped voltage under full 500 W surge; determines maximum stress on downstream components. |
| IPPM | 14.1 A - Peak surge current handling capacity under standardized 10/1000 μs waveform; defines single-event robustness. |
| PPPM | 500 W - Peak pulse power dissipation capability; enables protection against IEC 61000-4-5 Level 4 surges. |
| TJ max | +150 °C - Maximum junction temperature; supports operation in under-hood automotive environments. |
| Leakage ID | ≤1.0 μA at 22 V - Ultra-low reverse leakage preserves battery life and signal integrity in always-on circuits. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD22-B102. Cathode identified by black band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to ground or lower-potential rail in unidirectional clamp configuration. |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 24 V supply or CAN-H); band-marked end carries surge current into ground path. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD47. |
| Halogen-free & RoHS-compliant | Meets global environmental compliance requirements without compromising surge robustness or thermal performance. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 5a), improving clamping precision. |
| MSL Level 1 (260 °C) | Enables standard SMT reflow without moisture-related popcorn failure or delamination risk. |
| Glass-passivated junction | Ensures stable VBR tolerance and long-term leakage stability across temperature and lifetime. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamp |
|---|---|
Use Scenario: Protecting 24 V supply inputs in body control modules (BCM) against load dump and alternator transients per ISO 16750-2. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between battery rail and DC/DC input, absorbing >500 W surges within nanoseconds. Use Value: Limits voltage excursion to ≤35.5 V, preventing damage to 36 V-rated regulators and microcontrollers while maintaining AEC-Q101 compliance. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) of pressure sensors in factory automation systems from EFT and surge coupling. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF typical) clamping diode mounted directly at connector interface to minimize stub inductance. Use Value: Suppresses transients up to 14.1 A without distorting low-frequency analog signals, preserving measurement accuracy and system uptime. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Surge Suppression |
Use Scenario: Safeguarding PoE-powered network switches against lightning-induced surges on 48 V DC input rails. IC Role / Device Role / Timing Role: Primary front-end TVS in multi-stage protection scheme, shunting energy before secondary MOV or GDT stages. Use Value: Provides precise 22 V standoff and rapid <1 ns response to prevent cascading failure of upstream DC/DC converters and Ethernet PHYs. |
Use Scenario: Mitigating commutation spikes from brushed DC motors in smart home appliances (e.g., vacuum cleaners, blenders). IC Role / Device Role / Timing Role: Unidirectional suppressor connected across motor terminals or between H-bridge outputs and ground. Use Value: Handles repetitive 40 A IFSM surges and clamps spikes to safe levels, extending MOSFET lifespan and reducing EMI emissions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J22AHE3_A/H | Same electrical specs, but RoHS-compliant (non-halogen-free) and AEC-Q101 qualified; no halogen-free certification. | Acceptable where halogen-free material is not mandated (e.g., industrial, non-automotive OEMs). | Select SMA5J22AHM3_A/H when halogen-free compliance is required by customer specification or regional regulation (e.g., EU ELV Directive). |
| SMA5J22A-M3/61 | Identical electrical and thermal specs; differs only in packaging format (61 = 7" reel, 1800 pcs) and lacks AEC-Q101 qualification. | Suitable for commercial-grade applications without automotive qualification requirements. | Choose SMA5J22AHM3_A/H for automotive Tier-1 programs requiring traceable AEC-Q101 lot data and halogen-free materials. |
Compared with SMA5J22AHE3_A/H and SMA5J22A-M3/61, the SMA5J22AHM3_A/H uniquely combines halogen-free construction, AEC-Q101 qualification, and the same 500 W surge rating-making it the only option meeting strict automotive environmental and reliability mandates without design compromise.
Availability
SMA5J22AHM3_A/H is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and telecom power input protection requiring stable component supply, full AEC-Q101 traceability, and halogen-free compliance.
Supply support for SMA5J22AHM3_A/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, TVS devices, and optoelectronics with emphasis on reliability, power density, and application-specific qualification.
The SMA5J series was engineered for high-power-density transient suppression in space-constrained automotive and industrial systems, delivering 500 W surge capability in the compact SMA (DO-214AC) footprint.
FAQ
What is the clamping voltage of the SMA5J22AHM3_A/H under full-rated surge current?
The SMA5J22AHM3_A/H clamps to a maximum of 35.5 V when subjected to its rated peak pulse current of 14.1 A (10/1000 μs waveform). This value is measured per ANSI/IEEE C62.35 and confirmed in the Vishay datasheet Document Number 88875, ensuring predictable overvoltage limiting for downstream 36 V-rated ICs and regulators.
Is the SMA5J22AHM3_A/H suitable for automotive applications?
Yes, the SMA5J22AHM3_A/H is AEC-Q101 qualified and specifically designated for automotive use via the "HM3" suffix (halogen-free + AEC-Q101). It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias, and ESD, making it appropriate for engine control units, body electronics, and ADAS power domains.
How does the SMA5J22AHM3_A/H differ from the SMA5J22A-M3/61?
The SMA5J22AHM3_A/H shares identical electrical and thermal specifications with SMA5J22A-M3/61 but adds AEC-Q101 qualification and halogen-free material compliance. SMA5J22A-M3/61 is commercial-grade only and packaged in 7" reels (61 code), whereas SMA5J22AHM3_A/H uses the same reel format but with automotive traceability and environmental compliance.
What is the maximum operating temperature for the SMA5J22AHM3_A/H?
The SMA5J22AHM3_A/H has a maximum junction temperature (TJ) of +150 °C and an operating ambient temperature range of -55 °C to +150 °C. Derating of peak pulse power applies above TA = 25 °C per Figure 2 in the Vishay datasheet, supporting under-hood and industrial high-temperature deployments.
Does the SMA5J22AHM3_A/H have polarity marking, and how is it oriented in circuit?
Yes, the SMA5J22AHM3_A/H is unidirectional and marked with a cathode band. In circuit, the banded end (cathode) connects to the line being protected (e.g., 24 V rail), while the anode connects to ground. This orientation ensures proper clamping during positive transients and blocks reverse leakage below 22 V.
SMA5J22AHM3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- 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):
- 14.1A
- Power - Peak Pulse:
- 500W
- 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:
- DO-214AC (SMA)
SMA5J22AHM3_A/H FAQ
1.How can I place an order for SMA5J22AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J22AHM3_A/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 SMA5J22AHM3_A/H reliable?
The price and inventory of SMA5J22AHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J22AHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMA5J22AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J22AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J22AHM3_A/H?
SMA5J22AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J22AHM3_A/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 SMA5J22AHM3_A/H?
For technical support, including SMA5J22AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J22AHM3_A/H requirements.
6.How does Aetrix verify that SMA5J22AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMA5J22AHM3_A/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 SMA5J22AHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMA5J22AHM3_A/H?
All SMA5J22AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J22AHM3_A/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 SMA5J22AHM3_A/H part is unused and in its original packaging.
Return procedure for SMA5J22AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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