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Vishay General Semiconductor - Diodes Division SMAJ60CAHM3/I
- Part No.:
- SMAJ60CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ60CAHM3/I.pdf
- Description:
- TVS DIODE 60VWM 96.8VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,299
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Product details
Overview
SMAJ60CAHM3/I from Vishay General Semiconductor is a bidirectional 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 voltage (VBR) at 1 mA, 96.8 V maximum clamping voltage (VC) at 4.1 A peak pulse current, and 400 W peak pulse power rating (10/1000 μs waveform). It is widely deployed to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial power systems.
For engineers reviewing the SMAJ60CAHM3/I datasheet, SMAJ60CAHM3/I pinout, SMAJ60CAHM3/I application, or SMAJ60CAHM3/I equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance data (RθJA = 120 °C/W), halogen-free RoHS compliance, and real-world clamping behavior under surge conditions - all critical for ESD and lightning-induced transient design validation.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical VBR, VWM, and VC specifications in forward and reverse directions. Its glass-passivated junction ensures stable leakage performance (<1.0 μA at VWM) and fast response time (<1.0 ns), enabling effective suppression of fast-rising transients from inductive switching or ESD events.
The device is rated for 40 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine), junction temperature range of –55 °C to +150 °C, and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its SMA package supports automated placement and provides low incremental surge resistance for minimal voltage overshoot during clamping.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 60 V - Maximum continuous reverse voltage before significant conduction begins; defines operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 66.7–73.7 V at 1 mA - Confirmed breakdown range where device transitions into avalanche conduction; ensures reliable triggering above system operating voltage. |
| VC (Clamping Voltage) | 96.8 V at IPPM = 4.1 A - Peak voltage seen by protected circuit during 10/1000 μs surge; determines maximum stress on downstream components. |
| PPPM (Peak Pulse Power) | 400 W (≤78 V), 300 W (>78 V) - Surge energy handling capability under standardized waveform; defines protection level against repetitive transients. |
| IPPM (Peak Pulse Current) | 4.1 A - Maximum surge current the device safely clamps without degradation; derived from PPPM/VC calculation. |
| TJmax | +150 °C - Maximum allowable junction temperature; enables operation in under-hood automotive and high-ambient industrial environments. |
| RθJA | 120 °C/W - Thermal resistance from junction to ambient on standard 0.2" × 0.2" copper pads; informs board-level thermal design for sustained power dissipation. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, halogen-free, RoHS-compliant, AEC-Q101 qualified. Matte tin-plated leads, MSL Level 1, 260 °C reflow compatible. No polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (reverse polarity) | One terminal of symmetrical avalanche junction; conducts during negative-going surges relative to cathode reference. |
| Cathode | Transient current entry (forward polarity) | Other terminal of symmetrical junction; conducts during positive-going surges - functionally identical to anode in bidirectional mode. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - required for under-hood and ADAS signal line protection. |
| 400 W peak pulse power (10/1000 μs) | Enables protection against ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 surge events without derating in most PCB layouts. |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage stress on protected ICs - critical for 3.3 V/5 V logic interfaces and low-voltage MOSFET gate drivers. |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets automotive OEM environmental requirements and supports lead-free assembly without compromising surge robustness. |
| Fast response time (<1 ns) | Clamps transients before they propagate through PCB traces - essential for protecting high-speed sensor interfaces and CAN/LIN bus lines. |
Applications
| Automotive Power Distribution | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Protection of 12 V battery-fed ECUs against load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across power rail inputs to absorb >100 V spikes within nanoseconds. Use Value: Prevents latch-up or permanent damage to microcontrollers and CAN transceivers during cold-crank or jump-start events. |
Use Scenario: Shielding analog output lines of pressure/temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance shunt protector on 0–5 V or 4–20 mA signal paths adjacent to connectors. Use Value: Maintains signal integrity while limiting transient voltage to <100 V - well below typical op-amp input absolute maximum ratings. |
| Telecom Power Interface | Consumer Device USB Port Protection |
Use Scenario: Input-stage surge suppression for PoE-powered network switches and base station power supplies. IC Role / Device Role / Timing Role: Primary TVS on DC input rails upstream of DC/DC converters and hot-swap controllers. Use Value: Absorbs 400 W surges per IEEE 802.3bt compliance tests without thermal runaway or parametric shift. |
Use Scenario: ESD hardening of USB 2.0 data lines and VBUS pins in portable audio/video devices. IC Role / Device Role / Timing Role: Secondary-level TVS after common-mode chokes, providing final clamping before USB PHY ICs. Use Value: Delivers >30 kV contact ESD immunity (IEC 61000-4-2) while adding <0.5 pF parasitic capacitance to differential pairs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ60CAHE3/I | RoHS-compliant but not halogen-free; same electrical specs and AEC-Q101 qualification. | Acceptable for commercial/industrial use where halogen-free mandate does not apply. | Select when cost sensitivity outweighs automotive OEM environmental requirements. |
| SMBJ60CAHM3/I | Same VWM/VC but higher PPPM = 600 W; larger SMB (DO-214AA) package with RθJA = 85 °C/W. | Better suited for high-energy surge zones (e.g., main power entry) where PCB space allows larger footprint. | Choose when system-level surge testing exceeds 400 W or thermal margin is constrained. |
Compared with SMAJ60CAHE3/I, the SMAJ60CAHM3/I adds halogen-free compliance without sacrificing AEC-Q101 qualification or clamping performance; versus SMBJ60CAHM3/I, it trades 200 W pulse power headroom for 30% smaller board area and tighter layout integration in space-constrained modules.
Availability
SMAJ60CAHM3/I is available at Aetrix Electronics and suitable for automotive ECU designs, industrial sensor nodes, telecom power interfaces, and consumer USB protection circuits requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SMAJ60CAHM3/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMAJ series is engineered for high-reliability transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where consistent clamping behavior and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of SMAJ60CAHM3/I at its rated peak pulse current?
The SMAJ60CAHM3/I has a maximum clamping voltage (VC) of 96.8 V at a peak pulse current (IPPM) of 4.1 A under the 10/1000 μs waveform. This value is measured per JEDEC standards and reflects the actual voltage imposed on protected circuitry during worst-case surge events - a key parameter for verifying safe operating margins of downstream ICs and MOSFETs in the SMAJ60CAHM3/I protection network.
Is SMAJ60CAHM3/I qualified for automotive applications?
Yes, SMAJ60CAHM3/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3" and documentation in datasheet 88390. This qualification covers stress tests including temperature cycling, high-temperature reverse bias, and ESD - making SMAJ60CAHM3/I suitable for under-hood ECUs, body control modules, and ADAS sensor interfaces where automotive-grade reliability is mandatory.
How does the bidirectional configuration of SMAJ60CAHM3/I affect its circuit implementation?
The SMAJ60CAHM3/I is inherently bidirectional, meaning it provides symmetrical clamping for both positive and negative transients without polarity marking on the SMA package. This eliminates orientation concerns during placement and simplifies PCB layout for AC-coupled or floating signal lines - unlike unidirectional variants such as SMAJ60A, the SMAJ60CAHM3/I requires no cathode alignment and functions identically regardless of voltage polarity applied across its terminals.
What is the thermal resistance of SMAJ60CAHM3/I, and how does it impact layout design?
The SMAJ60CAHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 0.2" × 0.2" copper pads per terminal. This value directly impacts sustained power handling: at 3.3 W steady-state dissipation, junction temperature rise reaches ~400 °C - confirming that SMAJ60CAHM3/I is intended for transient-only duty, not continuous power. Layout must follow Vishay's recommended pad dimensions to maintain this RθJA rating and avoid thermal runaway during repeated surges.
Does SMAJ60CAHM3/I meet halogen-free and RoHS requirements?
Yes, SMAJ60CAHM3/I carries the "HM3" suffix, indicating it is both RoHS-compliant and halogen-free per Vishay's material categorization standard. This satisfies stringent environmental mandates from major automotive OEMs and industrial equipment manufacturers, and ensures compatibility with lead-free reflow processes up to 260 °C peak temperature - a requirement explicitly validated in the device's MSL Level 1 rating.
SMAJ60CAHM3/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:
- -
- 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/I FAQ
1.How can I place an order for SMAJ60CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ60CAHM3/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/I reliable?
The price and inventory of SMAJ60CAHM3/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/I is usually 5 days.
3.What payment methods are accepted for SMAJ60CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ60CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ60CAHM3/I?
SMAJ60CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ60CAHM3/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/I?
For technical support, including SMAJ60CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ60CAHM3/I requirements.
6.How does Aetrix verify that SMAJ60CAHM3/I is sourced from the original manufacturer or authorized distributors?
All SMAJ60CAHM3/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/I meets industry standards.
7.What is the process for return or replacement of SMAJ60CAHM3/I?
All SMAJ60CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ60CAHM3/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/I part is unused and in its original packaging.
Return procedure for SMAJ60CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ60CAHM3/I Tags
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