My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMAJ10-E3/61
- Part No.:
- SMAJ10-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ10-E3/61.pdf
- Description:
- TVS DIODE 10VWM 18.8VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,207
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMAJ10-E3/61 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in DO-214AC (SMA) package, designed for clamping transient overvoltages on power and signal lines. It features a 10 V standoff voltage (VWM), 18.8 V maximum clamping voltage (VC) at 21.3 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - suitable for protecting MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the SMAJ10-E3/61 datasheet, SMAJ10-E3/61 pinout, SMAJ10-E3/61 application, or SMAJ10-E3/61 equivalent, this page delivers verified electrical parameters, thermal resistance values, RoHS-compliant packaging details, and validated alternative parts for ESD and surge protection design-in.
Technical Context
The SMAJ10-E3/61 operates as a unidirectional avalanche diode with glass-passivated junction, enabling sub-nanosecond response to transients. Its breakdown voltage is specified at 11.1–13.6 V (IT = 1 mA), and it maintains ≤1.0 µA reverse leakage at 10 V standoff - critical for low-power sensor line protection.
Thermal performance is defined by RθJA = 120 °C/W and RθJL = 30 °C/W under standard 0.2 × 0.2" copper pad layout. The device supports repetitive surge duty cycle of 0.01 % and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak tolerance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 10 V - Maximum continuous reverse operating voltage before conduction begins; sets threshold for clamping activation in normal operation. |
| VC @ IPPM | 18.8 V at 21.3 A - Clamped voltage during 10/1000 µs surge; ensures downstream ICs see no more than 18.8 V under rated 400 W transient. |
| PPPM | 400 W - Peak pulse power handling capability with 10/1000 µs waveform; defines energy absorption limit for single-event surges. |
| IFSM | 40 A - Peak forward surge current rating (8.3 ms half-sine); validates robustness against inrush or fault currents in power rail applications. |
| TJ Range | −55 °C to +150 °C - Operating junction temperature range; enables deployment in automotive engine compartments and industrial motor drives. |
| RθJA | 120 °C/W - Junction-to-ambient thermal resistance on standard PCB pads; informs derating requirements for sustained surge repetition. |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, molded plastic case with matte tin-plated leads compliant with J-STD-002 and JESD22-B102. Cathode indicated by band marking; unidirectional polarity confirmed.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / surge return path | Connected to protected line ground or low-side reference; conducts during reverse-biased transient clamp event. |
| Cathode | Reverse-biased clamping node | Connected to protected line (e.g., VIN, signal trace); avalanches when voltage exceeds VBR, shunting surge to anode. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable breakdown characteristics and long-term reliability under repeated surge stress without parameter drift. |
| MSL Level 1 rating | Enables standard SMT reflow without pre-baking; compatible with high-volume automated assembly at 260 °C peak. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ESD, inductive kick), improving protection margin for 3.3 V/5 V logic. |
| RoHS-compliant & halogen-free | Fulfills EU Directive 2002/95/EC and WEEE 2002/96/EC; supports green manufacturing and end-of-life compliance requirements. |
Applications
| Industrial Power Input Protection | Automotive Sensor Signal Line Protection |
|---|---|
Use Scenario: 24 V DC input stage of PLC I/O module exposed to load dump and switching transients. IC Role / Device Role: Unidirectional TVS placed between VIN and GND to clamp surges before DC-DC converter input. Use Value: Limits voltage to ≤18.8 V during 400 W transients, preventing damage to upstream buck controller rated for 36 V max input. |
Use Scenario: LIN bus or analog sensor output (e.g., pressure, temperature) in engine control unit subject to ISO 7637-2 pulses. IC Role / Device Role: TVS mounted directly at connector entry point to suppress coupled transients before signal conditioning amplifier. Use Value: Sub-ns response and 1.0 µA leakage at 10 V preserve signal integrity while blocking >1 kV spikes per ISO 16750-2. |
| Consumer USB Port ESD Protection | Telecom Ethernet PHY Interface Protection |
Use Scenario: VBUS line of USB 2.0 port in set-top box subjected to ±8 kV contact ESD per IEC 61000-4-2. IC Role / Device Role: Primary clamping device on 5 V supply rail feeding USB switch and controller. Use Value: 18.8 V clamping ensures downstream 5 V tolerant ICs remain within absolute maximum ratings during ESD events. |
Use Scenario: 3.3 V bias rail feeding Ethernet PHY IC in residential gateway exposed to lightning-induced surges on PoE lines. IC Role / Device Role: Secondary protection after gas discharge tube (GDT), absorbing residual energy post-GDT conduction. Use Value: 400 W pulse rating handles residual surge energy not diverted by primary GDT, preventing PHY latch-up or burnout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ10A-E3/61 | Lower VBR range (11.1–12.3 V), tighter tolerance; 17.0 V VC at 23.5 A - lower clamping but reduced surge margin. | Better suited for 3.3 V/5 V logic rails where lower clamping voltage is prioritized over peak power handling. | Select SMAJ10A-E3/61 when system-level testing confirms 17.0 V clamping provides sufficient margin below IC absolute max ratings. |
| SMBJ10-E3/52 | Same VWM/VC specs but in larger DO-214AA (SMB) package; higher PPPM = 600 W and RθJA = 80 °C/W. | Preferred for high-reliability industrial systems requiring extended surge endurance or improved thermal dissipation. | Choose SMBJ10-E3/52 when board layout allows larger footprint and application demands >400 W single-pulse capability or lower thermal resistance. |
Compared with SMAJ10-E3/61, SMAJ10A-E3/61 offers tighter VBR control and lower clamping for sensitive logic, while SMBJ10-E3/52 trades footprint size for higher power handling and better thermal performance - selection depends on PCB area constraints, clamping margin requirements, and surge repetition profile.
Availability
SMAJ10-E3/61 is available at Aetrix Electronics and suitable for industrial power supplies, automotive sensor modules, consumer USB interfaces, and telecom PHY protection requiring stable component supply across production lifecycles.
Supply support for SMAJ10-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, and protection devices with emphasis on reliability and application-specific performance.
The SMAJ series was engineered for surface-mount transient suppression in space-constrained, high-volume applications - balancing low-profile packaging, robust surge capability, and AEC-Q101 readiness for automotive use.
FAQ
What is the clamping voltage of SMAJ10-E3/61 under a 10/1000 µs surge?
The SMAJ10-E3/61 exhibits a maximum clamping voltage (VC) of 18.8 V when subjected to its rated peak pulse current of 21.3 A with a 10/1000 µs waveform. This value is measured per Fig. 1 and Fig. 3 in Vishay document 88390 and defines the upper voltage limit imposed on protected circuitry during transient events. The SMAJ10-E3/61 maintains this clamping performance across its full operating temperature range.
Is SMAJ10-E3/61 unidirectional or bidirectional?
SMAJ10-E3/61 is a unidirectional Transient Voltage Suppressor, as confirmed by its part number suffix (no "C" or "CA") and the presence of a cathode band marking. Its electrical characteristics - including forward voltage drop and surge current rating - apply only in the reverse-biased direction. Bidirectional variants such as SMAJ10CA are explicitly designated with "CA" suffix and lack polarity marking.
What is the standoff voltage (VWM) and why does it matter for SMAJ10-E3/61?
The standoff voltage (VWM) of SMAJ10-E3/61 is 10 V - the maximum DC or continuous reverse voltage the device can withstand without entering avalanche conduction. This parameter ensures the SMAJ10-E3/61 remains non-conductive during normal operation, minimizing leakage (<1.0 µA) and avoiding interference with signal integrity or power rail regulation. Exceeding VWM risks premature clamping or thermal runaway.
Does SMAJ10-E3/61 meet automotive qualification standards?
The base SMAJ10-E3/61 is commercial-grade and RoHS-compliant but not AEC-Q101 qualified. For automotive applications, Vishay offers the SMAJ10HE3/61 variant (with "HE3" suffix), which is explicitly rated for high-reliability automotive use and certified to AEC-Q101. Engineers must specify the HE3 version when designing for engine bay, ADAS, or infotainment systems requiring automotive-grade validation.
What is the thermal resistance of SMAJ10-E3/61 and how does it affect layout?
The SMAJ10-E3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 0.2 × 0.2" (5.0 × 5.0 mm) copper pads per terminal. This value assumes minimum recommended pad layout per Figure 5 in document 88390. To maintain safe junction temperatures during repetitive surges, designers must ensure adequate copper area and avoid excessive trace length - undersized pads will increase RθJA and risk thermal failure of the SMAJ10-E3/61.
SMAJ10-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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 10V
- Voltage - Breakdown (Min):
- 11.1V
- Voltage - Clamping (Max) @ Ipp:
- 18.8V
- Current - Peak Pulse (10/1000µs):
- 21.3A
- 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)
SMAJ10-E3/61 FAQ
1.How can I place an order for SMAJ10-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ10-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 SMAJ10-E3/61 reliable?
The price and inventory of SMAJ10-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 SMAJ10-E3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ10-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ10-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ10-E3/61?
SMAJ10-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ10-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 SMAJ10-E3/61?
For technical support, including SMAJ10-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ10-E3/61 requirements.
6.How does Aetrix verify that SMAJ10-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ10-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 SMAJ10-E3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ10-E3/61?
All SMAJ10-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ10-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 SMAJ10-E3/61 part is unused and in its original packaging.
Return procedure for SMAJ10-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ10-E3/61 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
