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Vishay General Semiconductor - Diodes Division SMAJ60AHM3/I
- Part No.:
- SMAJ60AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ60AHM3/I.pdf
- Description:
- TVS DIODE 60VWM 96.8VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,778
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Product details
Overview
SMAJ60AHM3/I from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for robust overvoltage protection of sensitive electronics. It features a 60 V standoff voltage (VWM), 66.7–73.7 V breakdown range at 1 mA, 96.8 V maximum clamping voltage at 4.1 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - deployed on power rails and signal lines in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the SMAJ60AHM3/I datasheet, SMAJ60AHM3/I pinout, SMAJ60AHM3/I application, or SMAJ60AHM3/I equivalent, key selection criteria include its AEC-Q101 qualification, halogen-free RoHS-compliant HM3 suffix, low thermal resistance (RθJL = 30 °C/W), and verified clamping performance under repetitive surge conditions per IEC 61000-4-5.
Technical Context
This TVS diode operates as a unidirectional clamping device, leveraging an avalanche breakdown mechanism to divert transient energy away from protected circuitry. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ps), while the SMA package supports automated SMT placement and meets MSL Level 1 reflow requirements up to 260 °C peak.
The SMAJ60AHM3/I is rated for continuous operation from −55 °C to +150 °C junction temperature, with 3.3 W power dissipation on infinite heatsink at 50 °C ambient and 40 A non-repetitive forward surge capability (8.3 ms half-sine). Its 0.01 % duty cycle derating curve enables reliable use in infrequent but high-energy transients such as load dump or inductive switching events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 60 V - Maximum reverse operating voltage before clamping begins; defines safe DC/AC working limit for protected line. |
| VBR min/max | 66.7 V / 73.7 V at 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on during transients. |
| VC @ IPPM | 96.8 V at 4.1 A - Clamped voltage under 10/1000 μs surge; determines maximum stress on downstream ICs. |
| PPPM | 400 W - Peak pulse power handling (10/1000 μs); supports protection against IEC 61000-4-5 Level 4 surges. |
| IFSM | 40 A - Single half-sine surge current rating (8.3 ms); validates robustness against automotive load dump events. |
| TJ max | +150 °C - Maximum junction temperature; enables deployment in under-hood automotive environments. |
| RθJL | 30 °C/W - Junction-to-lead thermal resistance; supports efficient heat transfer to PCB copper pads. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band marking; polarity-critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry (unidirectional) | Connected to ground or low-side return path; completes clamping loop during positive transients. |
| Cathode | Reverse-biased terminal (marked with band) | Connected to protected line (e.g., 12 V rail); avalanche conduction occurs when line exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan. |
| Halogen-free & RoHS-compliant (HM3) | Meets JEDEC J-STD-201 Class 2 whisker resistance and environmental compliance for Tier 1 automotive supply chains. |
| 400 W peak pulse power (10/1000 μs) | Enables single-device protection against IEC 61000-4-5 4 kV surge (line-earth) without cascaded TVS stages. |
| Low RθJL = 30 °C/W | Reduces thermal bottleneck between junction and PCB; improves sustained surge endurance during repeated events. |
| Fast response time (<1 ps) | Clamps before transient propagates into IC input structures, preventing gate oxide damage in MOSFET drivers and microcontrollers. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed control modules from load dump transients (ISO 16750-2) and alternator ripple. IC Role / Device Role: Primary clamping element placed between battery input and DC-DC converter input stage. Use Value: Limits voltage to ≤96.8 V during 100 V/100 ms load dump event, preserving downstream PMIC and MCU power integrity. | Use Scenario: Safeguarding analog outputs (4–20 mA) and digital I/O (CAN, LIN) of PLC I/O modules exposed to field wiring surges. IC Role / Device Role: Line-side TVS on each channel's signal path, mounted directly at connector entry point. Use Value: Clamps induced lightning surges (IEC 61000-4-5, 2 kV) to sub-100 V levels, preventing latch-up in op-amps and transceivers. |
| Consumer Power Adapter Input Stage | Telecom Equipment DC Feeding Protection |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters subjected to mains switching transients. IC Role / Device Role: Unidirectional TVS across output capacitor terminals to absorb flyback spikes from transformer leakage inductance. Use Value: Maintains regulated 5 V/12 V output stability during 600 V/10 μs ring wave transients per IEC 61000-4-4. | Use Scenario: Protecting PoE-powered devices (IEEE 802.3af/at) from DC feed line surges caused by nearby lightning strikes. IC Role / Device Role: Bidirectional-capable variant not applicable; SMAJ60AHM3/I used on DC return path in conjunction with series fuse and common-mode choke. Use Value: Absorbs up to 400 W of common-mode surge energy without degradation, ensuring uninterrupted data link operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ60AHE3/I | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs HM3). | No AEC-Q101 qualification; limited to commercial-grade automotive subsystems (e.g., infotainment). | Select when halogen-free requirement is waived and cost sensitivity outweighs long-term reliability validation. |
| SMAJ60A-M3/5A | Identical TVS parameters; M3 suffix denotes halogen-free RoHS, but lacks AEC-Q101 certification. | Not validated for automotive temperature cycling or HTRB; suitable for industrial controls with <125 °C ambient. | Choose for non-automotive industrial designs where halogen-free compliance is mandatory but AEC-Q101 is not required. |
Compared with SMAJ60AHE3/I and SMAJ60A-M3/5A, the SMAJ60AHM3/I uniquely combines halogen-free construction, full AEC-Q101 qualification, and identical clamping performance - making it the only option qualified for safety-critical automotive power domains requiring both environmental and reliability compliance.
Availability
SMAJ60AHM3/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, and telecom power feeding systems requiring stable component supply across multi-year production cycles.
Supply support for SMAJ60AHM3/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 high-reliability and automotive-grade solutions.
The SMAJ series is engineered specifically for board-level transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where robustness against ISO 7637-2, IEC 61000-4-5, and load-dump events is mandatory.
FAQ
What is the clamping voltage of the SMAJ60AHM3/I under a 10/1000 μs surge?
The SMAJ60AHM3/I has a maximum clamping voltage (VC) of 96.8 V at 4.1 A peak pulse current (IPPM) under a 10/1000 μs waveform. This value is measured per standard test conditions defined in the Vishay datasheet (Document Number: 88390), and represents the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring compatibility with 12 V system ICs rated for ≤100 V absolute maximum.
Is the SMAJ60AHM3/I qualified for automotive applications?
Yes, the SMAJ60AHM3/I carries full AEC-Q101 qualification, confirmed in Vishay's ordering information table (page 3, footnote 1) and supported by its HM3 suffix designation. This qualification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling, and mechanical shock - validating its suitability for under-hood automotive modules such as body control units and ADAS power supplies where reliability across −40 °C to +125 °C ambient is required.
What does the "HM3" suffix mean in SMAJ60AHM3/I?
The "HM3" suffix in SMAJ60AHM3/I indicates halogen-free, RoHS-compliant construction with AEC-Q101 qualification. Per Vishay's mechanical data section, HM3 parts meet JESD 201 Class 2 whisker resistance, UL 94 V-0 flammability, and are supplied in 13″ tape-and-reel (I) packaging. This distinguishes it from E3 (RoHS only), M3 (halogen-free RoHS, no AEC-Q101), and HE3 (AEC-Q101 + RoHS, not halogen-free) variants.
Can SMAJ60AHM3/I be used in bidirectional circuits?
No, SMAJ60AHM3/I is a unidirectional TVS diode, as indicated by its "A" suffix (vs "CA" for bidirectional types like SMAJ60CA). Its cathode band marking and asymmetric I-V curve require correct polarity orientation - connecting it in reverse will block normal operation and fail to clamp negative transients. For bidirectional protection, select SMAJ60CA or equivalent with symmetrical breakdown in both directions.
What is the thermal resistance from junction to lead (RθJL) for SMAJ60AHM3/I?
The SMAJ60AHM3/I has a typical junction-to-lead thermal resistance (RθJL) of 30 °C/W, per Vishay's Thermal Characteristics table (page 3). This parameter quantifies how effectively heat transfers from the silicon junction to the device leads - enabling accurate thermal modeling when mounted on standard 0.2″ × 0.2″ copper pads. It supports reliable operation at 3.3 W continuous power dissipation when ambient temperature is maintained at 50 °C.
SMAJ60AHM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 60V
- Voltage - Breakdown (Min):
- 66.7V
- Voltage - Clamping (Max) @ Ipp:
- 96.8V
- Current - Peak Pulse (10/1000µs):
- 4.1A
- Power - Peak Pulse:
- 400W
- 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)
SMAJ60AHM3/I FAQ
1.How can I place an order for SMAJ60AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ60AHM3/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 SMAJ60AHM3/I reliable?
The price and inventory of SMAJ60AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ60AHM3/I is usually 5 days.
3.What payment methods are accepted for SMAJ60AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ60AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ60AHM3/I?
SMAJ60AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ60AHM3/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 SMAJ60AHM3/I?
For technical support, including SMAJ60AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ60AHM3/I requirements.
6.How does Aetrix verify that SMAJ60AHM3/I is sourced from the original manufacturer or authorized distributors?
All SMAJ60AHM3/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 SMAJ60AHM3/I meets industry standards.
7.What is the process for return or replacement of SMAJ60AHM3/I?
All SMAJ60AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ60AHM3/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 SMAJ60AHM3/I part is unused and in its original packaging.
Return procedure for SMAJ60AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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