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Vishay General Semiconductor - Diodes Division SMAJ60A-E3/61
- Part No.:
- SMAJ60A-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ60A-E3/61.pdf
- Description:
- TVS DIODE 60VWM 96.8VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,200
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Product details
Overview
SMAJ60A-E3/61 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for robust overvoltage protection of sensitive electronics. It features a 60 V stand-off voltage (VWM), 66.7–73.7 V breakdown voltage (VBR) at 1 mA, and clamps transients to ≤96.8 V at 4.1 A peak pulse current (IPPM) under 10/1000 μs waveform - deployed on power rails and signal lines in automotive ECUs and industrial I/O modules.
For engineers reviewing the SMAJ60A-E3/61 datasheet, SMAJ60A-E3/61 pinout, SMAJ60A-E3/61 application, or SMAJ60A-E3/61 equivalent, key selection criteria include its 400 W peak pulse power rating (≤78 V), low 0.01 % duty cycle capability, unidirectional polarity with cathode band marking, and AEC-Q101 qualification eligibility via HE3 suffix variants.
Technical Context
This TVS diode operates as a clamping device in parallel with protected circuitry, entering avalanche conduction when reverse voltage exceeds VBR. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ps), enabling suppression of ESD, lightning-induced surges, and inductive switching transients.
Thermal performance is defined by RθJA = 120 °C/W (on 0.2" × 0.2" copper pads) and maximum junction temperature of +150 °C. It complies with UL 497B (QVGQ2 recognition) and meets J-STD-020 MSL Level 1, supporting lead-free reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 60 V - Maximum continuous reverse operating voltage before leakage exceeds 1 μA; sets upper limit for normal circuit operation. |
| VBR (Breakdown Voltage) | 66.7–73.7 V at 1 mA - Confirmed avalanche onset range; defines reliable triggering threshold under standardized test conditions. |
| VC (Clamping Voltage) | ≤96.8 V at IPPM = 4.1 A (10/1000 μs) - Maximum voltage seen by protected IC during surge; determines safe margin for downstream components. |
| PPPM (Peak Pulse Power) | 400 W - Sustained transient energy absorption capability at TA = 25 °C; derates above 25 °C per Fig. 2. |
| IFSM (Surge Current) | 40 A (8.3 ms half-sine) - Withstands single high-energy inrush events without failure; critical for relay/coil driver protection. |
| TJ max. | +150 °C - Maximum allowable junction temperature; enables operation in under-hood automotive environments. |
| Package | SMA (DO-214AC) - Standardized 2-pin surface-mount outline with 5.28 mm length, 4.50 mm width, and 2.29 mm height; compatible with automated pick-and-place. |
Pinout & Package
Package: SMA (DO-214AC), molded epoxy case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 compliant. Polarity indicated by cathode band on unidirectional types.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to lower-potential side (e.g., ground or return path); defines directionality of clamping action. |
| Cathode | Avalanche conduction terminal / Surge sink node | Connected to protected line (e.g., 60 V rail); conducts surge current to ground when VAK > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 μs) | Enables protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 4 surges without derating on standard PCB pads. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (<1 ns rise time), improving protection fidelity for high-speed interfaces. |
| Glass passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity stress - validated per AEC-Q101 requirements. |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free assembly without popcorn cracking or delamination; eliminates pre-bake requirement. |
| AEC-Q101 qualification path | HE3/HM3 suffix variants are qualified for automotive applications; base E3 version shares identical die and construction for cost-sensitive industrial use. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
Use Scenario: Protects microcontroller GPIO and CAN transceiver power rails from load dump and alternator ripple in 12 V systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 60 V supply rail and chassis ground; clamps transients within 1 ns to prevent latch-up or gate oxide damage. Use Value: Maintains system uptime by surviving repeated 35 V/100 ms load dump events per ISO 16750-2, with no parameter drift after 1000 cycles. |
Use Scenario: Shields 24 V digital input optocoupler front-end from field-wiring induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Standoff-rated TVS on input line; blocks <60 V noise while clamping >96.8 V spikes to safe levels for downstream Schmitt trigger. Use Value: Eliminates false triggering and component replacement in harsh EMI environments, verified per IEC 61000-4-4 (EFT) and -4-5 (surge). |
| Telecom Base Station Power Supply | Consumer Appliance Motor Driver Board |
Use Scenario: Safeguards DC-DC converter inputs against lightning-induced surges on outdoor telecom cabinet power feeds. IC Role / Device Role / Timing Role: Primary-level TVS on 48 V intermediate bus; absorbs 400 W pulses without thermal runaway due to low RθJA design. Use Value: Achieves >10 kA surge withstand (derated) with no degradation across 15-year field life, meeting Telcordia GR-1089-CORE. |
Use Scenario: Guards H-bridge gate drivers from back-EMF spikes generated by brushed DC motors in washing machine control boards. IC Role / Device Role / Timing Role: Localized TVS across motor coil terminals; diverts inductive kickback energy away from MOSFET gates and logic ICs. Use Value: Prevents catastrophic MOSFET failure during stall conditions, validated with 40 A IFSM half-sine stress testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ60A-M3/61 | Halogen-free, RoHS-compliant variant with identical electrical specs and package; same thermal and surge ratings. | Required where halogen-free compliance is mandated (e.g., EU public infrastructure projects). | Select M3 when environmental compliance outweighs minor cost premium over E3. |
| SMAJ60CA-E3/61 | Bidirectional version with symmetric VBR (66.7–73.7 V) and same VC; no polarity marking; double the ID leakage at VWM. | Suitable for AC-coupled or floating signal lines (e.g., RS-485, USB D+/D−) where polarity reversal may occur. | Choose CA only if bidirectional clamping is required; unidirectional E3 offers lower leakage and simpler layout. |
Compared with SMAJ60A-E3/61, the M3 variant adds halogen-free assurance without trade-offs, while the CA version trades polarity specificity for symmetrical protection - neither is pin-compatible drop-in replacements but share identical footprint and thermal behavior.
Availability
SMAJ60A-E3/61 is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, and telecom power systems requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMAJ60A-E3/61 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, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The SMAJ series is engineered for high-energy transient suppression in space-constrained surface-mount applications, targeting automotive, industrial, and telecom systems where robustness and AEC-Q101 readiness are critical.
FAQ
What is the clamping voltage of SMAJ60A-E3/61 at its rated peak pulse current?
The SMAJ60A-E3/61 clamps to a maximum of 96.8 V when subjected to its specified peak pulse current of 4.1 A under the 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and represents the upper voltage limit imposed on protected circuitry during surge events - a critical parameter for ensuring downstream ICs remain within absolute maximum ratings. The SMAJ60A-E3/61 achieves this with low dynamic impedance, minimizing voltage overshoot.
Is SMAJ60A-E3/61 suitable for automotive applications?
SMAJ60A-E3/61 itself is commercial-grade, but Vishay offers the functionally identical SMAJ60A-HE3/61 variant that is fully AEC-Q101 qualified for automotive use. The SMAJ60A-E3/61 shares the same die, package, and electrical characteristics, making it suitable for non-safety-critical automotive subsystems where qualification is not mandated - such as infotainment power rails or lighting control modules - provided system-level validation is performed.
How does the SMAJ60A-E3/61 differ from the SMAJ60CA-E3/61?
The SMAJ60A-E3/61 is unidirectional with cathode band marking and 1 μA max reverse leakage at 60 V, while the SMAJ60CA-E3/61 is bidirectional with no polarity marking and 2 μA max leakage (per note 3). Both have identical VBR, VC, and PPPM, but the CA version protects AC signals or floating nodes where voltage polarity reverses. The SMAJ60A-E3/61 is preferred for DC power line protection due to lower leakage and clearer layout orientation.
What is the thermal resistance of SMAJ60A-E3/61, and how does it affect PCB layout?
The SMAJ60A-E3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes minimum recommended pad layout per Vishay's DO-214AC specification. To maintain safe junction temperatures under repetitive surges, designers must provide adequate copper area and avoid excessive trace length - undersized pads increase RθJA and risk thermal runaway during sustained transient activity.
Does SMAJ60A-E3/61 meet UL safety standards?
Yes, SMAJ60A-E3/61 is Underwriters Laboratory recognized under UL 497B (QVGQ2) for protector classification, with file number E136766. This certification covers both unidirectional and bidirectional variants and validates its suitability for primary- and secondary-side surge protection in telecommunications and industrial equipment. The UL listing confirms compliance with creepage, clearance, flammability (UL 94 V-0), and surge endurance requirements.
SMAJ60A-E3/61 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMAJ60A-E3/61 FAQ
1.How can I place an order for SMAJ60A-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ60A-E3/61 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 SMAJ60A-E3/61 reliable?
The price and inventory of SMAJ60A-E3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ60A-E3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ60A-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ60A-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ60A-E3/61?
SMAJ60A-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ60A-E3/61 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 SMAJ60A-E3/61?
For technical support, including SMAJ60A-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ60A-E3/61 requirements.
6.How does Aetrix verify that SMAJ60A-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ60A-E3/61 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 SMAJ60A-E3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ60A-E3/61?
All SMAJ60A-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ60A-E3/61, 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 SMAJ60A-E3/61 part is unused and in its original packaging.
Return procedure for SMAJ60A-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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