My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMAJ6.5AHM3_A/I
- Part No.:
- SMAJ6.5AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ6.5AHM3_A/I.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,873
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMAJ6.5AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping fast-rising voltage transients on power and signal lines. It features a 6.5 V stand-off voltage (VWM), 7.22–7.98 V breakdown voltage (VBR) at 10 mA, 11.2 V maximum clamping voltage (VC) at 35.7 A peak pulse current, 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 SMAJ6.5AHM3_A/I datasheet, SMAJ6.5AHM3_A/I pinout, SMAJ6.5AHM3_A/I application, or SMAJ6.5AHM3_A/I equivalent, this part delivers AEC-Q101 qualified surge protection with halogen-free RoHS compliance, low incremental surge resistance, and MSL Level 1 moisture sensitivity - critical for high-reliability board-level ESD and load-switching transient suppression.
Technical Context
This unidirectional TVS diode operates as a voltage-clamping device triggered by reverse-biased avalanche breakdown. Its glass-passivated junction ensures stable VBR tolerance (±5%) and fast response time (<1 ps), enabling effective suppression of ESD (IEC 61000-4-2), EFT (IEC 61000-4-4), and lightning-induced surges (IEC 61000-4-5).
The SMAJ6.5AHM3_A/I is rated for 40 A non-repetitive forward surge current (IFSM), 150 °C max junction temperature, and exhibits 0.061 %/°C temperature coefficient of VBR. Its thermal resistance (RθJA = 120 °C/W) assumes mounting on 0.2" × 0.2" copper pads - essential for validating power derating above 25 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - Maximum continuous reverse operating voltage before clamping begins; sets safe margin below system rail voltage. |
| VBR (min/max) | 7.22 V / 7.98 V at 10 mA - Confirmed breakdown range defining turn-on threshold under standardized test conditions. |
| VC @ IPPM | 11.2 V at 35.7 A - Clamped voltage during 400 W 10/1000 μs surge; determines protected circuit's worst-case overvoltage exposure. |
| PPPM | 400 W - Peak pulse power handling capability; defines transient energy absorption capacity per single event. |
| IFSM | 40 A - 8.3 ms half-sine surge current rating; supports robustness against inductive switch-off spikes in power electronics. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive or high-ambient industrial environments. |
| Package | SMA (DO-214AC) - Surface-mount outline with 0.208" × 0.157" footprint; compatible with automated pick-and-place and reflow soldering. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads, MSL Level 1 (260 °C peak reflow), UL 94 V-0 rated compound. Polarity indicated by cathode band on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal (unidirectional) | Connected to lower-potential side of protected line; conducts during forward surge events (e.g., reverse polarity faults). |
| Cathode | Avalanche clamping terminal (unidirectional) | Connected to higher-potential side (e.g., VCC rail); initiates clamping when reverse voltage exceeds VWM. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 μs) | Enables reliable suppression of high-energy transients without degradation across 1000+ surge events under derated conditions. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. |
| Halogen-free & RoHS-compliant | Meets global environmental regulations and eliminates corrosive halogen emissions during PCB assembly or end-of-life disposal. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, reducing stress on downstream MOSFET gates and logic inputs. |
| MSL Level 1 moisture sensitivity | Permits unlimited floor life and standard reflow profiles without baking - simplifies manufacturing logistics. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Suppresses load-dump and jump-start transients on 12 V battery-fed ECUs and lighting modules. IC Role / Device Role / Timing Role: Unidirectional clamping diode placed between VBAT and ground, activated within <1 ps of overvoltage onset. Use Value: Limits peak rail voltage to ≤11.2 V during 400 W surges, preventing damage to 16 V-rated LDOs and CAN transceivers. |
Use Scenario: Shields analog front-end inputs of pressure/temperature sensors in PLC I/O modules from field-wiring ESD and inductive kickback. IC Role / Device Role / Timing Role: Standoff-connected TVS on signal line (e.g., 4–20 mA loop), clamping reverse transients before they reach op-amp inputs. Use Value: Maintains signal integrity with <5 μA leakage at 6.5 V, while clamping ±35.7 A surges to safe levels for 24-bit ADC drivers. |
| Consumer Device USB Port Protection | Telecom Power Supply Input Protection |
|
Use Scenario: Guards VBUS line in USB-C ports of portable medical monitors and handheld test equipment against hot-plug and cable discharge events. IC Role / Device Role / Timing Role: Unidirectional TVS tied between VBUS and GND, leveraging fast avalanche response to limit ESD pulses to <11.2 V. Use Value: Passes IEC 61000-4-2 ±15 kV contact discharge with no latch-up or parametric shift in downstream USB PD controllers. |
Use Scenario: Protects primary-side rectifier outputs in telecom AC/DC adapters subjected to lightning-induced surges on AC mains input. IC Role / Device Role / Timing Role: Secondary-side clamping device across bulk capacitor, absorbing residual transients that bypass X/Y capacitors and MOVs. Use Value: Withstands 40 A 8.3 ms forward surge (IFSM), ensuring reliability during repeated AC line switching events in -40 °C to +85 °C operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.5AHE3_A/I | Same electrical specs but RoHS-compliant (non-halogen-free) and commercial-grade (not AEC-Q101 qualified). | Lacks automotive qualification; suitable for consumer/industrial designs where AEC-Q101 is not mandated. | Select SMAJ6.5AHE3_A/I for cost-sensitive non-automotive applications requiring identical clamping performance. |
| SMAJ6.5A-E3/61 | Same core TVS parameters; packaged in 7" tape/reel (1800 pcs) with base P/N-E3 suffix (RoHS, commercial grade, no AEC-Q101). | No halogen-free or automotive qualification; different packaging format and traceability coding. | Choose SMAJ6.5A-E3/61 for high-volume production with standard reel delivery and no halogen or automotive requirements. |
Compared with SMAJ6.5AHM3_A/I, SMAJ6.5AHE3_A/I offers identical clamping and surge ratings but omits halogen-free construction and AEC-Q101 validation, while SMAJ6.5A-E3/61 provides the same electrical behavior in a non-automotive, non-halogen-free commercial variant with alternate packaging - making SMAJ6.5AHM3_A/I the only option meeting full automotive environmental and reliability standards.
Availability
SMAJ6.5AHM3_A/I is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and telecom power supply surge suppression requiring stable component supply, long-term lifecycle support, and AEC-Q101 traceability.
Supply support for SMAJ6.5AHM3_A/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, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The SMAJ series is engineered for board-level transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where robustness against ESD, EFT, and lightning surges is mandatory.
FAQ
What is the clamping voltage of SMAJ6.5AHM3_A/I at its rated peak pulse current?
The SMAJ6.5AHM3_A/I has a maximum clamping voltage (VC) of 11.2 V at its rated peak pulse current (IPPM) of 35.7 A, measured using a 10/1000 μs waveform. This value defines the upper voltage limit imposed on protected circuitry during a 400 W transient event and is confirmed in the Vishay datasheet revision 09-Jan-2024, page 2. The SMAJ6.5AHM3_A/I maintains this clamping performance across its specified operating temperature range.
Is SMAJ6.5AHM3_A/I qualified for automotive applications?
Yes, SMAJ6.5AHM3_A/I is AEC-Q101 qualified, as indicated by the "HM3" suffix in its ordering code - denoting halogen-free, RoHS-compliant, and automotive-grade construction. This qualification covers stress testing for temperature cycling, humidity bias, mechanical shock, and surge robustness required for under-hood and chassis-mounted electronics. The SMAJ6.5AHM3_A/I meets these requirements per Vishay's documentation and is explicitly listed in the "MECHANICAL DATA" section of the datasheet.
What is the standoff voltage rating for SMAJ6.5AHM3_A/I?
The standoff voltage (VWM) for SMAJ6.5AHM3_A/I is 6.5 V - the maximum DC or continuous reverse voltage the device can withstand without entering avalanche breakdown. This value ensures compatibility with 5 V and 6 V logic rails and low-voltage power domains while maintaining sufficient margin below the 7.22 V minimum breakdown voltage. The SMAJ6.5AHM3_A/I datasheet specifies this parameter under "ELECTRICAL CHARACTERISTICS" with test conditions at TA = 25 °C.
Does SMAJ6.5AHM3_A/I have a bidirectional variant?
No, SMAJ6.5AHM3_A/I is a unidirectional TVS diode, as confirmed by its "A" suffix and cathode-band marking. Bidirectional variants in the SMAJ family use the "CA" suffix (e.g., SMAJ6.5CA) and lack polarity markings. The SMAJ6.5AHM3_A/I datasheet explicitly separates unidirectional ("A") and bidirectional ("CA") devices in the "DEVICE TYPE" table and notes polarity identification only for unidirectional types - confirming SMAJ6.5AHM3_A/I's single-direction clamping behavior.
What package type does SMAJ6.5AHM3_A/I use, and what are its key mechanical attributes?
SMAJ6.5AHM3_A/I uses the SMA (DO-214AC) surface-mount package, measuring 0.208" × 0.157" with 0.078" lead spacing. Key attributes include UL 94 V-0 flammability rating, matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, MSL Level 1 rating (260 °C peak reflow), and glass passivated chip junction. These features are documented in the "MECHANICAL DATA" section of the Vishay datasheet and ensure compatibility with automated assembly and high-reliability end-use environments.
SMAJ6.5AHM3_A/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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 6.5V
- Voltage - Breakdown (Min):
- 7.22V
- Voltage - Clamping (Max) @ Ipp:
- 11.2V
- Current - Peak Pulse (10/1000µs):
- 35.7A
- 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)
SMAJ6.5AHM3_A/I FAQ
1.How can I place an order for SMAJ6.5AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ6.5AHM3_A/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 SMAJ6.5AHM3_A/I reliable?
The price and inventory of SMAJ6.5AHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ6.5AHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMAJ6.5AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ6.5AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ6.5AHM3_A/I?
SMAJ6.5AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ6.5AHM3_A/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 SMAJ6.5AHM3_A/I?
For technical support, including SMAJ6.5AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ6.5AHM3_A/I requirements.
6.How does Aetrix verify that SMAJ6.5AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMAJ6.5AHM3_A/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 SMAJ6.5AHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMAJ6.5AHM3_A/I?
All SMAJ6.5AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ6.5AHM3_A/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 SMAJ6.5AHM3_A/I part is unused and in its original packaging.
Return procedure for SMAJ6.5AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ6.5AHM3_A/I 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 …
