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Vishay General Semiconductor - Diodes Division SMAJ60AHE3/61
- Part No.:
- SMAJ60AHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ60AHE3/61.pdf
- Description:
- TVS DIODE 60VWM 96.8VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMAJ60AHE3/61 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features a 60 V stand-off 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 (IPPM), and 400 W peak pulse power (10/1000 μs waveform), suitable for protecting MOSFETs and ICs in automotive power supplies.
For engineers reviewing the SMAJ60AHE3/61 datasheet, SMAJ60AHE3/61 pinout, SMAJ60AHE3/61 application, or SMAJ60AHE3/61 equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 150 °C max junction temperature, low incremental surge resistance, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a fast-acting shunt protector: under normal conditions it presents high impedance (>1 MΩ leakage at 60 V), then avalanches within <1 ns to clamp transient overvoltages. Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability under repetitive surge stress.
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 resistance is 120 °C/W junction-to-ambient (RθJA) and 30 °C/W junction-to-lead (RθJL), enabling effective heat dissipation when mounted per recommended pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 60 V - Maximum continuous reverse operating voltage before significant leakage begins; defines safe DC or AC RMS working limit. |
| VBR min/max | 66.7 V / 73.7 V at 1 mA - Confirmed breakdown range ensuring reliable avalanche initiation across process variation and temperature. |
| VC @ IPPM | 96.8 V at 4.1 A - Clamped voltage during 10/1000 μs surge; determines protected circuit's maximum transient exposure level. |
| PPPM | 400 W (≤78 V), 300 W (>78 V) - Peak transient energy handling capability with defined waveform; sets surge immunity class. |
| ID @ VWM | 1.0 μA - Reverse leakage at rated stand-off voltage; critical for low-power sensor or battery-backed circuits. |
| TJ max. | +150 °C - Maximum junction temperature; supports operation in under-hood automotive environments and industrial enclosures. |
| IFSM | 40 A - Non-repetitive forward surge rating (8.3 ms half-sine); enables robustness against accidental polarity reversal events. |
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; meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal (unidirectional) | Connected to lower-potential side of protected line; conducts only during forward surge or miswiring. |
| Cathode | Avalanche clamping terminal | Connected to higher-potential side (e.g., VIN or signal line); initiates clamping when reverse voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing-enables use in engine control units and ADAS power rails. |
| 400 W peak pulse power (10/1000 μs) | Withstands IEC 61000-4-5 Level 3 surges (1 kV/2 Ω) without degradation; supports industrial and telecom surge immunity requirements. |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage drift over 10+ years; eliminates risk of moisture-induced parameter shift in humid environments. |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free SMT reflow profiles without preconditioning; eliminates manufacturing yield loss in high-volume assembly. |
| Low profile SMA package | Height ≤1.75 mm enables use in space-constrained modules such as USB-C PD controllers and automotive camera ECUs. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed microcontrollers and CAN transceivers from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional shunt clamping element placed between VBAT and GND, activated within <1 ns of overvoltage event. Use Value: Limits transient voltage to ≤96.8 V, preventing latch-up or gate oxide damage in downstream 3.3 V/5 V logic and analog front-ends. |
Use Scenario: Safeguarding 4–20 mA current loop transmitters and RS-485 nodes from ESD and inductive switching noise. IC Role / Device Role / Timing Role: Bidirectional-capable variant not used; SMAJ60AHE3/61 serves as unidirectional clamp on supply rail feeding isolated signal conditioning ICs. Use Value: Maintains signal integrity by suppressing >60 V transients while adding <1 pF junction capacitance-no bandwidth degradation in sub-MHz analog paths. |
| Consumer Power Adapter Output Protection | OBD-II Diagnostic Interface Protection |
|
Use Scenario: Secondary-side overvoltage suppression in 5 V/9 V/12 V USB PD adapters and wall adapters. IC Role / Device Role / Timing Role: Final-stage TVS placed after DC-DC converter output filter, clamping flyback spikes and hot-plug transients. Use Value: Withstands 40 A surge current (IFSM) and 400 W pulses without bond wire failure-ensures adapter compliance with UL 62368-1 Annex D. |
Use Scenario: Hardening OBD-II connector pins (pins 2, 6, 14) against ESD and vehicle battery disconnection spikes. IC Role / Device Role / Timing Role: Unidirectional TVS connected between CAN_H/CAN_L and chassis ground, referenced to vehicle GND. Use Value: AEC-Q101 qualification guarantees performance across -40 °C to +125 °C ambient, meeting ISO 16750-2 pulse 5a/b test requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ60A-E3/61 | Commercial-grade (non-AEC-Q101), identical electrical specs and SMA package; RoHS-compliant but not automotive-qualified. | Limited to consumer/industrial designs without automotive qualification mandates. | Select when cost sensitivity outweighs AEC-Q101 requirement and environmental stress testing is not mandated. |
| SMCJ60AHE3/61 | Same VWM/VBR/VC ratings but in larger SMC (DO-214AB) package; 1500 W peak pulse power (10/1000 μs) vs. 400 W. | Used where higher surge energy absorption is required (e.g., 48 V industrial bus protection), but requires larger PCB area. | Choose when system-level surge tests exceed IEC 61000-4-5 Level 4 and board space permits SMC footprint. |
Compared with SMAJ60A-E3/61, SMAJ60AHE3/61 adds AEC-Q101 validation for automotive deployment; compared with SMCJ60AHE3/61, it trades 3.75× lower surge rating for 40 % smaller footprint-enabling compact placement near IC power pins.
Availability
SMAJ60AHE3/61 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and consumer power adapter output clamping requiring stable component supply and traceable sourcing.
Supply support for SMAJ60AHE3/61 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 optimization.
The SMAJ series is engineered for high-reliability transient suppression in automotive, industrial, and computing systems-designed to meet stringent AEC-Q101, IEC 61000-4-2/4-5, and UL 497B requirements.
FAQ
What is the maximum clamping voltage of the SMAJ60AHE3/61 under a 10/1000 μs surge?
The SMAJ60AHE3/61 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 JEDEC standards and defines the upper voltage limit imposed on protected circuitry during transient events. The SMAJ60AHE3/61 maintains this clamping performance across its full operating temperature range and lifetime, verified through AEC-Q101 stress testing.
Is SMAJ60AHE3/61 suitable for automotive applications?
Yes, SMAJ60AHE3/61 is AEC-Q101 qualified and specifically intended for automotive use. Its qualification covers temperature cycling, highly accelerated life testing (HALT), and ESD robustness per ISO 10605. The part is commonly deployed in engine control units, body control modules, and infotainment power supplies where sustained operation from -40 °C to +125 °C ambient is required. SMAJ60AHE3/61 meets these demands with its 150 °C max junction temperature and MSL Level 1 reflow compatibility.
What does the "HE3" suffix indicate in SMAJ60AHE3/61?
The "HE3" suffix in SMAJ60AHE3/61 denotes RoHS-compliant construction with AEC-Q101 qualification. "H" indicates automotive grade, "E3" specifies lead-free matte tin plating and compliance with EU RoHS Directive 2011/65/EU. This distinguishes it from commercial variants like SMAJ60A-E3/61 (RoHS-compliant but not AEC-Q101 qualified) and ensures traceability to Vishay's automotive material categorization system per doc#99912. SMAJ60AHE3/61 is fully documented in Vishay's automotive product change notifications.
How does the SMAJ60AHE3/61 compare to bidirectional TVS diodes like SMAJ60CA?
SMAJ60AHE3/61 is unidirectional and intended for DC power line protection where polarity is fixed; SMAJ60CA is bidirectional and suited for AC signal lines or differential buses like RS-485. The SMAJ60AHE3/61 exhibits forward conduction below ~0.7 V (anode-to-cathode), whereas SMAJ60CA clamps symmetrically in both directions. For 12 V automotive supply rails, SMAJ60AHE3/61 provides tighter leakage control (<1 μA) and avoids unnecessary forward conduction path-making it the preferred choice for polarized DC protection.
What PCB pad layout is recommended for optimal thermal performance of SMAJ60AHE3/61?
Vishay specifies a minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad per terminal for SMAJ60AHE3/61 to achieve rated 400 W peak pulse power. These pads must be thermally connected to internal ground/power planes via ≥4 thermal vias (0.3 mm diameter) per pad. Deviation reduces RθJA from 120 °C/W toward 180 °C/W, risking thermal runaway during repetitive surges. The SMAJ60AHE3/61 datasheet Figure 2 provides exact dimensions and copper weight recommendations for FR-4 substrates.
SMAJ60AHE3/61 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMAJ60AHE3/61 FAQ
1.How can I place an order for SMAJ60AHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ60AHE3/61 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 SMAJ60AHE3/61 reliable?
The price and inventory of SMAJ60AHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ60AHE3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ60AHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ60AHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ60AHE3/61?
SMAJ60AHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ60AHE3/61 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 SMAJ60AHE3/61?
For technical support, including SMAJ60AHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ60AHE3/61 requirements.
6.How does Aetrix verify that SMAJ60AHE3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ60AHE3/61 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 SMAJ60AHE3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ60AHE3/61?
All SMAJ60AHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ60AHE3/61, 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 SMAJ60AHE3/61 part is unused and in its original packaging.
Return procedure for SMAJ60AHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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