My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMAJ7.0A-M3/61
- Part No.:
- SMAJ7.0A-M3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ7.0A-M3/61.pdf
- Description:
- TVS DIODE 7VWM 12VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,370
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMAJ7.0A-M3/61 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping fast-rising ESD and surge transients on power and signal lines. It features a 7.0 V stand-off voltage (VWM), 7.78–8.60 V breakdown voltage (VBR) at 10 mA, 12.0 V maximum clamping voltage (VC) at 33.3 A peak pulse current (IPPM), and 400 W peak pulse power rating with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the SMAJ7.0A-M3/61 datasheet, SMAJ7.0A-M3/61 pinout, SMAJ7.0A-M3/61 application, or SMAJ7.0A-M3/61 equivalent, this part delivers verified clamping performance, halogen-free RoHS compliance (M3 suffix), and AEC-Q101 qualification readiness - critical for board-level surge protection design, I/O line hardening, and layout-constrained PCBs requiring low-profile TVS devices.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: under normal bias it presents high impedance (< 800 μA leakage at 7.0 V), then rapidly avalanches below 1 ns to limit transient overvoltage. Its glass-passivated junction ensures stable VBR tolerance and low incremental surge resistance, enabling consistent clamping across repetitive 10/1000 μs surges at 0.01% duty cycle.
The device is rated for 150 °C max junction temperature and mounted on 5.0 mm × 5.0 mm copper pads per terminal. Thermal resistance is 120 °C/W (junction-to-ambient) and 30 °C/W (junction-to-lead), supporting reliable operation in thermally dense environments without active cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - maximum continuous reverse operating voltage before conduction begins; sets safe operating margin for 5 V–7 V supply rails. |
| VBR min/max | 7.78 V / 8.60 V at 10 mA - tight 10.6% tolerance ensures predictable turn-on across production lots and temperature. |
| VC @ IPPM | 12.0 V at 33.3 A - clamping voltage during 10/1000 μs surge; limits downstream IC stress to safe levels. |
| PPPM | 400 W - peak pulse power handling capability; sufficient for IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge events. |
| ID @ VWM | ≤ 800 μA - low reverse leakage preserves battery life and avoids false triggering in low-power sensor nodes. |
| TJ max | +150 °C - enables use in under-hood automotive modules and industrial enclosures without derating. |
| Package | SMA (DO-214AC) - standardized surface-mount footprint with cathode band marking; compatible with automated pick-and-place. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads, MSL Level 1 (260 °C reflow peak), UL 94 V-0 rated compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or lowest potential rail; forms return path during avalanche conduction. |
| Cathode | Protected line input | Connected to the line being protected (e.g., 5 V rail, CAN_H, USB_VBUS); polarity band identifies this terminal. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power | Handles IEC 61000-4-5 surges up to 1 kV/2 Ω without degradation when mounted per recommended pad layout. |
| 12.0 V clamping at 33.3 A | Ensures downstream 3.3 V or 5 V logic remains within absolute maximum ratings during transient events. |
| Halogen-free & RoHS-compliant (M3) | Meets environmental compliance requirements for automotive and industrial OEMs without sacrificing surge robustness. |
| Sub-1 ns response time | Clamps transients before sensitive CMOS inputs experience overstress - critical for high-speed data lines and microcontrollers. |
| AEC-Q101 qualification option | HE3/HM3 variants available for automotive applications; SMAJ7.0A-M3/61 shares identical electrical specs and thermal behavior. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 5 V power distribution networks in engine control units (ECUs) against load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between VCC and GND, acting as last-line voltage clamp during >100 V transients. Use Value: Limits rail voltage to ≤12.0 V during 400 W surges, preventing latch-up or gate oxide damage in MCU and driver ICs. |
Use Scenario: Hardening analog sensor outputs (e.g., pressure, temperature) connected to ADC inputs in factory automation PLCs. IC Role / Device Role / Timing Role: Low-leakage TVS on signal line to ground, suppressing ESD and cable discharge events without affecting DC accuracy. Use Value: Maintains <800 μA leakage at 7.0 V, avoiding offset errors in 16-bit precision measurement paths while clamping ±8 kV HBM ESD. |
| Consumer USB Port Protection | Telecom Line Interface Protection |
|
Use Scenario: Safeguarding USB 2.0 VBUS and D+/D− lines in portable docking stations exposed to hot-plug and contact ESD. IC Role / Device Role / Timing Role: Standoff-rated TVS on VBUS rail, triggered only above 7.0 V to avoid interfering with normal 4.75–5.25 V operation. Use Value: Clamps 30 A surges to 12.0 V within nanoseconds, meeting USB-IF ESD immunity requirements without adding capacitance-induced signal distortion. |
Use Scenario: Protecting RS-485 transceiver terminals in base station backhaul equipment subjected to lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Primary shunt suppressor on differential pair, coordinated with secondary GDT or MOV for multi-stage protection. Use Value: Provides precise 7.0 V standoff and 12.0 V clamping to preserve common-mode range of transceivers while surviving repeated 10/1000 μs surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.0A-E3/61 | Same electrical specs and package; RoHS-compliant but contains brominated flame retardants (non-halogen-free). | Acceptable for commercial-grade designs where halogen-free requirement is not mandated. | Select SMAJ7.0A-E3/61 if environmental compliance allows standard RoHS without halogen-free stipulation. |
| SMAJ7.0AHE3_A/H | Identical electrical parameters and SMA package; AEC-Q101 qualified and RoHS-compliant (E3 suffix), no halogen-free claim. | Required for automotive applications needing formal qualification evidence (e.g., PPAP submission). | Choose SMAJ7.0AHE3_A/H when automotive OEM specifications require AEC-Q101 documentation and traceability. |
Compared with SMAJ7.0A-E3/61 and SMAJ7.0AHE3_A/H, the SMAJ7.0A-M3/61 uniquely satisfies halogen-free mandates without sacrificing surge rating or thermal performance - making it optimal for industrial and Tier-1 automotive suppliers enforcing strict material declarations.
Availability
SMAJ7.0A-M3/61 is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLC I/O modules, consumer USB hubs, and telecom line interface boards requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMAJ7.0A-M3/61 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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for demanding industrial and automotive applications.
The SMAJ series is engineered for robust transient suppression in space-constrained, high-surge environments - targeting design-in across automotive power systems, industrial control interfaces, and infrastructure communication equipment.
FAQ
What is the clamping voltage of the SMAJ7.0A-M3/61 under a 10/1000 μs surge?
The SMAJ7.0A-M3/61 has a maximum clamping voltage (VC) of 12.0 V at 33.3 A peak pulse current (IPPM), measured with a 10/1000 μs waveform. This value is guaranteed across temperature and production lots per Vishay's datasheet Document Number 88390, ensuring predictable overvoltage limiting for downstream 5 V logic and analog circuitry. The SMAJ7.0A-M3/61 achieves this with low incremental surge resistance and sub-1 ns response.
Is the SMAJ7.0A-M3/61 halogen-free and RoHS-compliant?
Yes, the SMAJ7.0A-M3/61 carries the "M3" suffix, indicating it is both halogen-free and RoHS-compliant per EU Directive 2011/65/EU. The molding compound meets UL 94 V-0 flammability rating, and terminals are matte tin plated per J-STD-002. This makes the SMAJ7.0A-M3/61 suitable for environmentally regulated markets including automotive Tier-1 supply chains and industrial equipment sold in the EU and Asia-Pacific regions.
Does the SMAJ7.0A-M3/61 meet AEC-Q101 qualification?
The SMAJ7.0A-M3/61 itself is not AEC-Q101 qualified; however, its electrically identical variant SMAJ7.0AHE3_A/H (and HM3_A/H) is fully AEC-Q101 qualified per Vishay's ordering information. The SMAJ7.0A-M3/61 shares the same die, package, thermal characteristics, and electrical parameters - differing only in material compliance and qualification status. For automotive applications requiring formal qualification, specify the HE3 or HM3 variant instead of SMAJ7.0A-M3/61.
What is the maximum reverse leakage current of the SMAJ7.0A-M3/61 at its stand-off voltage?
The SMAJ7.0A-M3/61 exhibits a maximum reverse leakage current (ID) of 800 μA at its 7.0 V stand-off voltage (VWM), tested at TA = 25 °C. This low leakage supports energy-sensitive applications such as battery-powered sensors and always-on monitoring circuits, where cumulative leakage could impact standby current budgets. The value is confirmed in the Electrical Characteristics table of Vishay's datasheet 88390.
What PCB pad layout is recommended for optimal thermal and surge performance of the SMAJ7.0A-M3/61?
Vishay specifies mounting the SMAJ7.0A-M3/61 on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve its rated 400 W peak pulse power and 120 °C/W junction-to-ambient thermal resistance. Smaller pads reduce power handling and increase junction temperature during surge events. The SMAJ7.0A-M3/61 datasheet Figure 2 provides derating curves showing power reduction above 25 °C ambient - proper pad sizing ensures full spec compliance across industrial temperature ranges.
SMAJ7.0A-M3/61 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):
- 7V
- Voltage - Breakdown (Min):
- 7.78V
- Voltage - Clamping (Max) @ Ipp:
- 12V
- Current - Peak Pulse (10/1000µs):
- 33.3A
- 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)
SMAJ7.0A-M3/61 FAQ
1.How can I place an order for SMAJ7.0A-M3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ7.0A-M3/61 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 SMAJ7.0A-M3/61 reliable?
The price and inventory of SMAJ7.0A-M3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ7.0A-M3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ7.0A-M3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ7.0A-M3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ7.0A-M3/61?
SMAJ7.0A-M3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ7.0A-M3/61 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 SMAJ7.0A-M3/61?
For technical support, including SMAJ7.0A-M3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ7.0A-M3/61 requirements.
6.How does Aetrix verify that SMAJ7.0A-M3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ7.0A-M3/61 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 SMAJ7.0A-M3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ7.0A-M3/61?
All SMAJ7.0A-M3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ7.0A-M3/61, 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 SMAJ7.0A-M3/61 part is unused and in its original packaging.
Return procedure for SMAJ7.0A-M3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ7.0A-M3/61 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 …
