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Vishay General Semiconductor - Diodes Division SMAJ60AHM3/H
- Part No.:
- SMAJ60AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ60AHM3/H.pdf
- Description:
- TVS DIODE 60VWM 96.8VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,454
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Product details
Overview
SMAJ60AHM3/H 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 test current, and clamps transients to ≤96.8 V at 4.1 A peak pulse current (10/1000 μs waveform). It delivers 400 W peak pulse power and is halogen-free, RoHS-compliant, and AEC-Q101 qualified - ideal for automotive power line and sensor interface protection.
For engineers reviewing the SMAJ60AHM3/H datasheet, SMAJ60AHM3/H pinout, SMAJ60AHM3/H application, or SMAJ60AHM3/H equivalent, key selection criteria include its unidirectional polarity, 96.8 V clamping voltage under 4.1 A surge, -55 °C to +150 °C operating junction temperature, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on standard PCB copper pads.
Technical Context
This TVS diode operates as a fast-acting shunt protector, leveraging an avalanche breakdown mechanism to clamp voltage spikes before they damage downstream ICs or MOSFETs. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at 60 V), while the low incremental surge resistance enables effective energy diversion during repetitive transients.
The device is rated for 400 W peak pulse power (10/1000 μs) up to 78 V, derating to 300 W above that threshold. Thermal performance is defined by RθJA = 120 °C/W (on 0.2" × 0.2" copper pads) and RθJL = 30 °C/W, supporting reliable operation in compact automotive and industrial layouts without forced cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 60 V - maximum continuous reverse voltage before significant conduction begins; defines safe operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 66.7–73.7 V at 1 mA - precise avalanche onset range ensuring predictable turn-on during overvoltage events |
| VC (Clamping Voltage) | ≤96.8 V at IPPM = 4.1 A - limits transient voltage seen by protected circuitry to a safe, known ceiling |
| PPPM (Peak Pulse Power) | 400 W (10/1000 μs) - energy-handling capacity sufficient for ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surges |
| IFSM (Surge Current) | 40 A (8.3 ms half-sine) - withstands high-energy, low-frequency inductive switch-offs without failure |
| TJ Range | -55 °C to +150 °C - supports under-hood automotive and industrial environments with wide thermal cycling |
| Package | SMA (DO-214AC) - surface-mount footprint compatible with standard reflow profiles and J-STD-020 MSL Level 1 handling |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads; cathode indicated by band on body; meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to system ground or lower-potential rail in unidirectional configuration; defines polarity-sensitive placement |
| Cathode | Clamping output / Surge sink node | Connected to protected line (e.g., 12 V supply or signal); conducts avalanche current to ground during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and body electronics per stress test requirements |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets global environmental regulations without compromising surge robustness or thermal reliability |
| 400 W peak pulse power (10/1000 μs) | Handles common automotive load-dump and inductive switching transients without degradation |
| Fast response time (<1 ps) | Activates before most ICs can be damaged, limiting voltage overshoot to sub-nanosecond timescales |
| Low clamping ratio (VC/VWM ≈ 1.61) | Minimizes voltage stress on protected devices while maintaining margin against false triggering |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump (ISO 7637-2 Pulse 5a) and alternator transients. IC Role / Device Role: Unidirectional shunt TVS placed between power rail and chassis ground. Use Value: Clamps 12 V line to ≤96.8 V during 400 W surges, preventing MOSFET gate oxide rupture and microcontroller latch-up. |
Use Scenario: Safeguarding analog sensor outputs (e.g., pressure or temperature sensors) connected to microcontrollers in factory automation. IC Role / Device Role: Point-of-entry TVS on signal lines exposed to ESD and relay-induced spikes. Use Value: Limits transient voltage to <100 V with <1 μA leakage at 60 V, preserving signal integrity and ADC accuracy. |
| Consumer Power Adapter Input Stage | Telecom DC Power Feeds |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters powering USB-C PD devices. IC Role / Device Role: Standoff-rated TVS across regulated 5–20 V output rails. Use Value: Maintains 60 V working voltage while clamping lightning-induced surges to 96.8 V, meeting IEC 62368-1 insulation coordination. |
Use Scenario: DC feed protection in PoE-powered telecom equipment (e.g., remote radio units). IC Role / Device Role: Unidirectional TVS on 48 V input bus upstream of DC/DC converters. Use Value: Withstands repetitive 10/1000 μs surges up to 400 W without parameter drift, ensuring long-term field reliability. |
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/H | RoHS-compliant but not halogen-free; same electrical specs and AEC-Q101 qualification | Acceptable where halogen content is unrestricted (e.g., non-automotive industrial use) | Select when cost optimization is prioritized and halogen-free compliance is not mandated |
| SMBJ60A-H | Higher 600 W peak pulse power; SMB (DO-214AA) package with larger thermal mass and 1.5× footprint | Better suited for higher-energy surges but requires PCB layout change and increased board area | Choose when system-level surge testing exceeds 400 W or thermal derating margins are marginal |
Compared with SMAJ60AHM3/H, SMAJ60AHE3/H offers identical protection performance without halogen-free assurance, while SMBJ60A-H provides greater surge headroom at the cost of larger size and non-drop-in replacement - making SMAJ60AHM3/H optimal for space-constrained AEC-Q101 automotive designs requiring full environmental compliance.
Availability
SMAJ60AHM3/H is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and telecom DC power feeds requiring stable component supply, halogen-free compliance, and AEC-Q101 validation.
Supply support for SMAJ60AHM3/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, and protection devices with emphasis on reliability, efficiency, and application-specific validation.
The SMAJ series was engineered for high-reliability transient suppression in harsh environments - particularly automotive and industrial systems where consistent clamping behavior, thermal stability, and regulatory compliance are mandatory.
FAQ
What is the clamping voltage of the SMAJ60AHM3/H under maximum rated surge current?
The SMAJ60AHM3/H clamps to a maximum of 96.8 V when subjected to its peak pulse current of 4.1 A (10/1000 μs waveform). This value is measured per standardized test conditions and ensures downstream components see no more than this voltage during transient events. The clamping performance is guaranteed across the full operating temperature range of -55 °C to +150 °C, and the SMAJ60AHM3/H maintains this specification without degradation under repetitive surge duty cycles up to 0.01 %.
Is SMAJ60AHM3/H suitable for automotive applications, and what qualifications does it hold?
Yes, SMAJ60AHM3/H is explicitly qualified to AEC-Q101 for automotive use, as confirmed by Vishay's ordering code suffix "HM3" and documentation. It undergoes stress testing for temperature cycling, humidity bias, mechanical shock, and surge endurance - validating suitability for engine control modules, infotainment power supplies, and ADAS sensor interfaces. The SMAJ60AHM3/H also meets MSL Level 1 per J-STD-020, enabling direct placement into high-volume SMT lines without baking.
How does the halogen-free construction of SMAJ60AHM3/H impact its electrical performance?
The halogen-free formulation of SMAJ60AHM3/H - denoted by the "HM3" suffix - has no measurable effect on its electrical parameters: VWM, VBR, VC, PPPM, or leakage current remain identical to non-halogen variants like SMAJ60AHE3/H. Vishay validates that the molding compound substitution preserves thermal resistance, surge robustness, and long-term reliability - making SMAJ60AHM3/H a drop-in environmental upgrade for automotive and green-electronics programs.
What is the maximum reverse leakage current of SMAJ60AHM3/H at its rated standoff voltage?
At its 60 V standoff voltage (VWM) and ambient temperature of 25 °C, the SMAJ60AHM3/H exhibits a maximum reverse leakage current (ID) of 1.0 μA. This ultra-low leakage ensures minimal power loss in always-on circuits and prevents unintended loading of high-impedance sensor lines or precision voltage references. Leakage remains below 5 μA even at 150 °C junction temperature, supporting stable operation in thermally demanding locations.
Can SMAJ60AHM3/H be used in bidirectional configurations?
No, SMAJ60AHM3/H is a unidirectional TVS diode, as indicated by the "A" suffix and presence of a cathode band. Bidirectional operation requires the "CA" suffix (e.g., SMAJ60CA). Attempting to use SMAJ60AHM3/H in reverse-biased configurations risks permanent breakdown or failure, since its anode-cathode structure is optimized only for forward conduction during surge events. For symmetric transient protection, select SMAJ60CAHM3/H instead.
SMAJ60AHM3/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:
- 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/H FAQ
1.How can I place an order for SMAJ60AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ60AHM3/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 SMAJ60AHM3/H reliable?
The price and inventory of SMAJ60AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ60AHM3/H is usually 5 days.
3.What payment methods are accepted for SMAJ60AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ60AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ60AHM3/H?
SMAJ60AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ60AHM3/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 SMAJ60AHM3/H?
For technical support, including SMAJ60AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ60AHM3/H requirements.
6.How does Aetrix verify that SMAJ60AHM3/H is sourced from the original manufacturer or authorized distributors?
All SMAJ60AHM3/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 SMAJ60AHM3/H meets industry standards.
7.What is the process for return or replacement of SMAJ60AHM3/H?
All SMAJ60AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ60AHM3/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 SMAJ60AHM3/H part is unused and in its original packaging.
Return procedure for SMAJ60AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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