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Vishay General Semiconductor - Diodes Division SMAJ60CAHM3/H
- Part No.:
- SMAJ60CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ60CAHM3/H.pdf
- Description:
- TVS DIODE 60VWM 96.8VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,526
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Product details
Overview
SMAJ60CAHM3/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on signal and power lines. It features 60 V standoff voltage (VWM), 66.7–73.7 V breakdown voltage (VBR) at 1 mA, 400 W peak pulse power (10/1000 μs), 4.1 A peak pulse current (IPPM), and 96.8 V maximum clamping voltage (VC) - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial systems.
For engineers reviewing the SMAJ60CAHM3/H datasheet, SMAJ60CAHM3/H pinout, SMAJ60CAHM3/H application, or SMAJ60CAHM3/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, halogen-free RoHS compliance, low thermal resistance (RθJA = 120 °C/W), and compatibility with automated SMT placement on standard PCB copper pads.
Technical Context
This device operates as a silicon avalanche diode optimized for fast transient suppression in both polarities. Its glass-passivated junction enables sub-nanosecond response time and stable clamping under repetitive surge conditions up to 0.01% duty cycle. The bidirectional structure eliminates polarity concerns in AC-coupled or floating signal paths.
Thermal performance is defined by RθJA = 120 °C/W (on 0.2" × 0.2" copper pads) and RθJL = 30 °C/W, supporting reliable operation up to TJ = +150 °C. It meets J-STD-020 MSL Level 1 and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 60 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 66.7 V / 73.7 V at IT = 1 mA - Ensures consistent avalanche initiation across production lots |
| VC @ IPPM | 96.8 V at 4.1 A - Limits downstream voltage stress during 10/1000 μs surge events |
| PPPM | 400 W - Peak transient energy absorption capacity under standardized waveform |
| IDR @ VWM | 1.0 μA - Ultra-low leakage preserves signal integrity in high-impedance circuits |
| TJ max. | +150 °C - Enables use in under-hood automotive and industrial environments |
| Package | SMA (DO-214AC) - Surface-mount footprint compatible with IPC-7351B standard pad layout |
Pinout & Package
Two-terminal bidirectional device in SMA (DO-214AC) package; no polarity marking required. Terminals are matte tin-plated, solderable per J-STD-002 and JESD22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Identical electrical behavior in either direction; no cathode band marking |
| Case (body) | Thermal and mechanical interface | Plastic molding meets UL 94 V-0; requires 0.2" × 0.2" copper pads per terminal for rated power dissipation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including temperature cycling, HTRB, and ESD |
| Halogen-free & RoHS-compliant | Meets environmental compliance for global OEM supply chains without compromising surge robustness |
| 400 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth) when properly laid out |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (<1 ns response) |
| MSL Level 1 moisture sensitivity | Enables unlimited floor life and reflow compatibility without dry-pack handling |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppressing load-dump and jump-start transients on 12 V battery-fed ECUs and body control modules. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between power rail and ground, responding within nanoseconds to overvoltage events. Use Value: Limits voltage to ≤96.8 V during 400 W surges, preventing damage to 60 V-rated power management ICs and microcontrollers. | Use Scenario: Protecting analog inputs of pressure/temperature sensors connected to long harnesses in factory automation. IC Role / Device Role / Timing Role: Low-leakage (1.0 μA) TVS placed at connector entry point to shunt ESD and inductive switching noise. Use Value: Maintains signal fidelity with minimal DC loading while clamping ±15 kV contact ESD per IEC 61000-4-2. |
| Telecom Data Line Surge Suppression | Consumer USB Port Transient Protection |
Use Scenario: Safeguarding RS-485 transceivers in outdoor base stations exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Bidirectional TVS integrated into differential pair protection network with common-mode chokes. Use Value: Clamps common-mode transients to <96.8 V without distorting data signals due to symmetrical VBR matching. | Use Scenario: Adding secondary-level surge immunity to USB 2.0 VBUS and D+/D− lines in smart home hubs. IC Role / Device Role / Timing Role: Standoff-rated (60 V) suppressor that remains inactive during normal 5 V operation but activates on overvoltage faults. Use Value: Prevents latch-up in USB controllers during hot-plug events or adapter overvoltage, meeting USB-IF ESD requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ60CAHE3/H | RoHS-compliant but not halogen-free; same electrical specs and AEC-Q101 qualification | Acceptable where halogen-free requirement is not mandated by end-customer specification | Select SMAJ60CAHM3/H when full halogen-free compliance is required for automotive Tier 1 sourcing. |
| SMBJ60CAHM3 | Same VWM/VC, but SMB (DO-214AA) package - 30% larger footprint and higher PPPM (600 W) | Better suited for higher-energy surges; requires PCB layout change due to larger pad dimensions | Choose SMBJ60CAHM3 only if system-level testing confirms need for >400 W surge margin and board space permits larger package. |
Compared with SMAJ60CAHE3/H, SMAJ60CAHM3/H adds halogen-free construction without trade-offs in clamping performance or qualification status; versus SMBJ60CAHM3, it offers identical protection level in a smaller SMA footprint but with lower absolute surge rating - making it optimal for space-constrained automotive modules where 400 W suffices.
Availability
SMAJ60CAHM3/H is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, telecom infrastructure, and consumer USB protection requiring stable component supply and AEC-Q101 assurance.
Supply support for SMAJ60CAHM3/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 application-specific validation.
The SMAJ series is engineered for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where AEC-Q101 qualification, low leakage, and precise clamping are critical.
FAQ
What does the 'HM3' suffix indicate in SMAJ60CAHM3/H?
The 'HM3' suffix in SMAJ60CAHM3/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. The 'H' indicates the packaging format (7" tape and reel), and '/H' at the end specifies the revision code per Vishay's ordering nomenclature. This distinguishes it from non-halogen-free variants like SMAJ60CAHE3/H.
Is SMAJ60CAHM3/H suitable for protecting 5 V logic lines?
No - SMAJ60CAHM3/H has a 60 V standoff voltage (VWM) and is intended for 12 V–48 V systems. Using it on 5 V lines would result in excessive leakage and potential false triggering. For 5 V logic, select SMAJ5.0CAHM3/H or similar low-VWM variants with appropriate clamping margins.
Does SMAJ60CAHM3/H require a heatsink for 400 W surge handling?
No - SMAJ60CAHM3/H achieves its 400 W peak pulse rating with standard PCB copper pads (0.2" × 0.2" per terminal), not external heatsinks. Its RθJA = 120 °C/W is specified under this mounting condition; adding heatsinks provides no benefit for transient events but may improve steady-state thermal management if DC leakage is significant.
How does the bidirectional design of SMAJ60CAHM3/H affect circuit layout?
The bidirectional design of SMAJ60CAHM3/H eliminates polarity constraints - it can be placed symmetrically across any two nodes without regard to anode/cathode orientation. This simplifies layout in AC-coupled or floating signal paths (e.g., RS-485, CAN, audio lines) and avoids errors during automated assembly.
Can SMAJ60CAHM3/H replace SMAJ60A in a design?
No - SMAJ60A is unidirectional with cathode marking and forward voltage drop, while SMAJ60CAHM3/H is bidirectional with symmetrical characteristics. Substituting them requires verifying that the circuit does not rely on DC blocking or polarity-sensitive clamping behavior; mismatched polarity may cause unintended conduction or failure to suppress negative transients.
SMAJ60CAHM3/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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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)
SMAJ60CAHM3/H FAQ
1.How can I place an order for SMAJ60CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ60CAHM3/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 SMAJ60CAHM3/H reliable?
The price and inventory of SMAJ60CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ60CAHM3/H is usually 5 days.
3.What payment methods are accepted for SMAJ60CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ60CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ60CAHM3/H?
SMAJ60CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ60CAHM3/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 SMAJ60CAHM3/H?
For technical support, including SMAJ60CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ60CAHM3/H requirements.
6.How does Aetrix verify that SMAJ60CAHM3/H is sourced from the original manufacturer or authorized distributors?
All SMAJ60CAHM3/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 SMAJ60CAHM3/H meets industry standards.
7.What is the process for return or replacement of SMAJ60CAHM3/H?
All SMAJ60CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ60CAHM3/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 SMAJ60CAHM3/H part is unused and in its original packaging.
Return procedure for SMAJ60CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ60CAHM3/H Tags
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