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Vishay General Semiconductor - Diodes Division SMAJ60CAHM3_A/I
- Part No.:
- SMAJ60CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ60CAHM3_A/I.pdf
- Description:
- TVS DIODE 60VWM 96.8VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,576
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Product details
Overview
SMAJ60CAHM3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal 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 power rails.
For engineers reviewing the SMAJ60CAHM3_A/I datasheet, SMAJ60CAHM3_A/I pinout, SMAJ60CAHM3_A/I application, or SMAJ60CAHM3_A/I equivalent, this device serves as a halogen-free, AEC-Q101-qualified transient suppressor with MSL Level 1 moisture sensitivity, matte tin-plated leads, and verified performance under 8.3 ms surge and repetitive 0.01% duty cycle conditions.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering identical clamping behavior during positive and negative transients. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at VWM), while the 30 °C/W junction-to-lead thermal resistance supports reliable energy dissipation in compact PCB layouts.
The device complies with ANSI/IEEE C62.35 surge standards and meets UL 497B recognition (QVGQ2, E136766). It is rated for continuous operation from −55 °C to +150 °C junction temperature, with derating applied above 25 °C ambient per Figure 2 of the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 60 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working margin. |
| VBR (min/max) | 66.7 V / 73.7 V at IT = 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 96.8 V at 4.1 A - Clamped voltage seen by protected circuit during full-rated 10/1000 μs surge; limits stress on downstream components. |
| PPPM | 400 W - Peak transient power handling capability with standard 10/1000 μs waveform; sufficient for IEC 61000-4-5 Level 3 surges. |
| IFSM | 40 A - Non-repetitive forward surge rating (8.3 ms half-sine); validates robustness against inrush or fault currents in unidirectional configurations. |
| TJ max | +150 °C - Maximum junction temperature; enables use in under-hood automotive and high-temperature industrial environments. |
| Package | SMA (DO-214AC) - Standardized surface-mount outline with 5.0 mm × 5.0 mm copper pad thermal footprint; compatible with automated reflow assembly. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads; polarity-unmarked for bidirectional operation; meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity event) | Conducts during negative-going surges; forms symmetrical clamping path with cathode terminal. |
| Cathode | Transient current entry (positive polarity event) | Conducts during positive-going surges; enables bidirectional protection without external polarity management. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM performance for ± transients - eliminates need for dual-device placement on AC or floating lines. |
| AEC-Q101 qualification | Validated reliability for automotive power electronics including engine control units and body modules - supports PPAP and long-term field deployment. |
| Halogen-free & RoHS-compliant | HM3 suffix denotes halogen-free molding compound and lead finish - satisfies EU ELV and OEM environmental compliance requirements. |
| MSL Level 1 rating | No floor life limitation; supports unlimited exposure to ambient conditions prior to reflow - simplifies inventory and production planning. |
| Low incremental surge resistance | Enables tighter VC – VBR margin (ΔV = 30.1 V) - improves protection headroom for sensitive 3.3 V or 5 V logic interfaces. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Suppressing load-dump and jump-start transients on 12 V battery-fed ECUs and lighting modules. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between power input and DC/DC converter input stage. Use Value: Limits transient excursions to ≤96.8 V, preventing damage to 40 V-rated input capacitors and controller ICs. |
Use Scenario: Guarding analog outputs and digital communication lines (e.g., CAN, LIN) of pressure/temperature sensors in factory automation. IC Role / Device Role / Timing Role: Low-capacitance transient shunt mounted directly at connector entry point. Use Value: Responds in <1 ps to fast-rising ESD or inductive spikes, preserving signal integrity without loading 100 kΩ sensor output impedance. |
| Consumer Power Adapter Input Stage | Telecom DC Power Feed Protection |
|
Use Scenario: Protecting primary-side controllers and rectifiers in universal-input AC/DC adapters against line surges and lightning-induced coupling. IC Role / Device Role / Timing Role: Standoff-rated TVS placed across bulk capacitor input terminals. Use Value: Absorbs 400 W pulses without degradation, maintaining >100 k-cycle surge endurance per JEDEC JESD22-A114. |
Use Scenario: Safeguarding -48 V DC feeding circuits in base station power distribution units exposed to ground potential differences. IC Role / Device Role / Timing Role: Bidirectional suppressor bridging feed line and chassis ground to divert common-mode surges. Use Value: Symmetric clamping prevents reverse-bias overstress on telecom-grade DC/DC isolators rated for ±60 V operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ60CAHE3_A/I | Same electrical specs; RoHS-compliant but not halogen-free; uses standard epoxy molding compound. | Lacks halogen-free certification required for certain Tier 1 automotive programs. | Select when halogen content is unrestricted and cost optimization is prioritized. |
| SMAJ60AHE3_A/I | Unidirectional version; cathode-marked; 96.8 V clamping same, but conducts only in one polarity. | Requires explicit polarity alignment; unsuitable for AC or floating bus protection without additional diodes. | Choose only for DC rails with known, fixed polarity and where space allows discrete polarity management. |
Compared with SMAJ60CAHM3_A/I, the HE3 variant trades halogen-free compliance for lower cost, while the unidirectional SMAJ60AHE3_A/I requires board-level polarity control and cannot replace SMAJ60CAHM3_A/I in bidirectional signal paths without redesign.
Availability
SMAJ60CAHM3_A/I is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC feed protection requiring stable component supply, long-lifecycle assurance, and AEC-Q101-qualified sourcing.
Supply support for SMAJ60CAHM3_A/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, and protection devices with emphasis on reliability, efficiency, and application-specific validation.
The SMAJ series was developed for high-energy transient suppression in space-constrained, high-reliability systems - particularly targeting automotive, industrial, and telecom infrastructure where AEC-Q101 qualification and repeatable clamping performance are mandatory.
FAQ
What is the clamping voltage of SMAJ60CAHM3_A/I at its rated peak pulse current?
The SMAJ60CAHM3_A/I exhibits a maximum clamping voltage (VC) of 96.8 V when subjected to its rated peak pulse current of 4.1 A under the standardized 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in the Vishay datasheet revision 09-Jan-2024, ensuring predictable overvoltage limiting for protected circuits downstream of the SMAJ60CAHM3_A/I.
Is SMAJ60CAHM3_A/I suitable for automotive applications?
Yes, SMAJ60CAHM3_A/I is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction - making it suitable for under-hood and body-control module applications. Its −55 °C to +150 °C operating range, MSL Level 1 rating, and UL 497B recognition (E136766) further validate its readiness for automotive production use per SMAJ60CAHM3_A/I specifications.
How does the bidirectional design of SMAJ60CAHM3_A/I affect PCB layout?
The bidirectional design of SMAJ60CAHM3_A/I eliminates polarity marking - no cathode band is present, and either terminal may connect to any side of the protected line. This simplifies layout on AC-coupled, floating, or differential buses (e.g., RS-485, CAN), avoids orientation errors during automated placement, and removes the need for duplicate unidirectional devices in symmetric protection schemes using SMAJ60CAHM3_A/I.
What is the thermal resistance profile of SMAJ60CAHM3_A/I?
SMAJ60CAHM3_A/I has a typical junction-to-lead thermal resistance (RθJL) of 30 °C/W and junction-to-ambient (RθJA) of 120 °C/W when mounted on the recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads. These values enable effective heat transfer during transient events and inform thermal pad sizing - critical for sustaining repeated 400 W surges without exceeding the +150 °C TJ limit of SMAJ60CAHM3_A/I.
Does SMAJ60CAHM3_A/I meet industry surge immunity standards?
Yes, SMAJ60CAHM3_A/I is characterized per ANSI/IEEE C62.35 and validated for IEC 61000-4-5 surge immunity testing up to Level 3 (1 kV line-earth, 2 kV line-line). Its 400 W peak pulse power rating, 96.8 V clamping, and sub-nanosecond response time ensure compliance in designs targeting EN 55032, ISO 7637-2, and CISPR 25 - all confirmed in the official SMAJ60CAHM3_A/I datasheet.
SMAJ60CAHM3_A/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:
- Active
- 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_A/I FAQ
1.How can I place an order for SMAJ60CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ60CAHM3_A/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 SMAJ60CAHM3_A/I reliable?
The price and inventory of SMAJ60CAHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ60CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMAJ60CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ60CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ60CAHM3_A/I?
SMAJ60CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ60CAHM3_A/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 SMAJ60CAHM3_A/I?
For technical support, including SMAJ60CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ60CAHM3_A/I requirements.
6.How does Aetrix verify that SMAJ60CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMAJ60CAHM3_A/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 SMAJ60CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMAJ60CAHM3_A/I?
All SMAJ60CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ60CAHM3_A/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 SMAJ60CAHM3_A/I part is unused and in its original packaging.
Return procedure for SMAJ60CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ60CAHM3_A/I Tags
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