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Vishay General Semiconductor - Diodes Division SMBJ6.5AHM3_A/H
- Part No.:
- SMBJ6.5AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ6.5AHM3_A/H.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,189
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Product details
Overview
SMBJ6.5AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in the SMB (DO-214AA) package, designed to protect sensitive electronics against voltage transients induced by inductive load switching and lightning surges. It features a 6.5 V stand-off voltage (VWM), 7.22–7.98 V breakdown voltage (VBR) at 10 mA, 600 W peak pulse power (10/1000 µs), clamping voltage of 11.2 V at 53.6 A, and operates across -55 °C to +150 °C junction temperature.
For engineers reviewing the SMBJ6.5AHM3_A/H datasheet, SMBJ6.5AHM3_A/H pinout, SMBJ6.5AHM3_A/H application, or SMBJ6.5AHM3_A/H equivalent, key selection criteria include its unidirectional polarity, halogen-free RoHS-compliant construction (HM3 suffix), AEC-Q101 qualification readiness, low clamping ratio (VC/VBR ≈ 1.45), and suitability for automotive sensor line protection, industrial I/O interface hardening, and DC power rail surge suppression.
Technical Context
This TVS diode uses a glass-passivated silicon junction optimized for fast response (<1 ps) to ESD and surge events, with low incremental surge resistance enabling effective voltage clamping during high-current transients. Its unidirectional configuration provides forward conduction capability (VF ≤ 3.5 V at 50 A) while blocking reverse leakage (ID ≤ 500 µA at VWM).
The device is rated for 600 W peak pulse power under standardized 10/1000 µs waveform conditions, derated linearly above 25 °C ambient per Fig. 2, and supports repetitive surge duty cycles up to 0.01 %. Thermal resistance is 100 °C/W junction-to-ambient (on recommended 5.0 mm × 5.0 mm copper pads) and 20 °C/W junction-to-lead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - Maximum continuous reverse operating voltage before significant leakage; sets safe margin below system supply rails. |
| VBR (min/max) | 7.22 V / 7.98 V at 10 mA - Confirmed breakdown range ensures reliable triggering without premature conduction. |
| VC @ IPPM | 11.2 V at 53.6 A - Clamping voltage limits downstream IC stress during 600 W surge events. |
| IPPM | 53.6 A - Peak surge current capacity under 10/1000 µs waveform defines transient energy handling capability. |
| PPPM | 600 W - Standardized surge power rating enables direct comparison with other TVS devices in system-level protection design. |
| TJ max. | +150 °C - High junction temperature rating supports operation in under-hood automotive and industrial environments. |
| Package | SMB (DO-214AA) - Surface-mount footprint compatible with automated assembly; 0.220" × 0.130" body size fits dense PCB layouts. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional polarity with cathode band marking. Matte tin-plated leads meet J-STD-002 solderability and JESD 22-B102 whisker resistance (Class 2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to lower-potential side (e.g., GND or return path); defines directionality of clamping action. |
| Cathode | Clamping output / Surge current sink | Connected to protected line (e.g., 12 V rail or signal trace); conducts surge current to ground when VLINE exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 12 V systems without derating. |
| Halogen-free, RoHS-compliant (HM3 suffix) | Meets environmental compliance requirements for automotive and industrial end equipment without compromising thermal performance. |
| AEC-Q101 qualification ready | Supports automotive-grade reliability validation paths; base HM3_X variants are fully qualified per AEC-Q101. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage exposure to downstream components during transient events compared to higher-ratio alternatives. |
| MSL Level 1 (260 °C peak reflow) | Allows single-pass lead-free reflow assembly without moisture sensitivity concerns or baking requirements. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground to clamp transients before they reach the transceiver input stage. Use Value: Limits voltage excursion to ≤11.2 V during 53.6 A surges, preserving signal integrity and preventing latch-up in 5 V or 3.3 V interface ICs. |
Use Scenario: Hardening digital input channels on programmable logic controllers exposed to relay coil flyback and motor drive noise in factory automation. IC Role / Device Role / Timing Role: Standoff-rated TVS on 24 V DC input lines, absorbing repetitive 600 W transients without degradation. Use Value: Maintains <500 µA leakage at 6.5 V, ensuring clean logic-level detection while surviving >100,000 surge events per MIL-STD-883H Method 3015.8. |
| DC Power Rail Suppression | Consumer USB Port Protection |
|
Use Scenario: Secondary surge protection on 5 V/12 V DC power distribution networks in telecom power supplies and PoE injectors. IC Role / Device Role / Timing Role: Parallel-connected TVS shunting surge energy to ground upstream of DC-DC converters and LDOs. Use Value: Clamps 600 W transients within 1 ns, limiting voltage overshoot to 11.2 V and protecting downstream regulators rated for ≤16 V absolute maximum. |
Use Scenario: ESD and surge protection on USB 2.0 VBUS and D+/D− lines in set-top boxes and smart displays. IC Role / Device Role / Timing Role: Unidirectional TVS on VBUS line (cathode to VBUS, anode to GND) to suppress hot-swap and cable discharge events. Use Value: Withstands ±30 kV HBM ESD per ANSI/IEEE C62.35 and maintains <1 pF junction capacitance-no signal integrity impact on 480 Mbps data lines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.5AHE3_A/H | RoHS-compliant (E3 suffix) but not halogen-free; same electrical specs and AEC-Q101 qualification path. | Preferred for commercial/industrial designs where halogen content is unrestricted but automotive qualification is required. | Select SMBJ6.5AHE3_A/H when halogen-free material is not mandated and cost optimization is prioritized. |
| SMBJ6.5A-M3/52 | Same halogen-free (M3) construction but supplied in 7" tape-and-reel (52) vs. SMBJ6.5AHM3_A/H's H-coded 7" reel with A/H revision marking. | Identical performance; differs only in packaging logistics and traceability format-not functional or electrical. | Choose SMBJ6.5A-M3/52 for standard distribution channel orders requiring generic M3 labeling without revision-specific tracking. |
Compared with SMBJ6.5AHM3_A/H, the HE3 variant trades halogen-free compliance for broader commercial availability, while the M3/52 variant offers identical materials and ratings in a non-revision-coded logistics format-making SMBJ6.5AHM3_A/H optimal for AEC-Q101-bound automotive programs requiring full material traceability and halogen-free assurance.
Availability
SMBJ6.5AHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and DC power rail protection requiring stable component supply, halogen-free compliance, and AEC-Q101 qualification readiness.
Supply support for SMBJ6.5AHM3_A/H 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, efficiency, and application-specific optimization.
The SMBJ series is engineered for high-energy transient suppression in automotive, industrial, and telecom infrastructure-delivering consistent clamping performance, low leakage, and robust surge endurance in compact surface-mount packages.
FAQ
What is the clamping voltage of SMBJ6.5AHM3_A/H at its rated peak pulse current?
The SMBJ6.5AHM3_A/H has a maximum clamping voltage (VC) of 11.2 V at its rated peak pulse current (IPPM) of 53.6 A under the standardized 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures predictable overvoltage limiting during surge events. The SMBJ6.5AHM3_A/H maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C), making it suitable for under-hood automotive use.
Is SMBJ6.5AHM3_A/H certified for automotive applications?
SMBJ6.5AHM3_A/H carries the HM3 suffix indicating halogen-free, RoHS-compliant construction and is part of Vishay's AEC-Q101-qualified SMBJ family. While the base part number SMBJ6.5AHM3_A/H itself is manufactured to AEC-Q101 requirements, final qualification status depends on the specific "_X" revision code (here "A/H"). Full AEC-Q101 test reports are available upon request for traceable HM3_X lots. The SMBJ6.5AHM3_A/H meets MSL Level 1 and withstands 260 °C peak reflow, supporting automotive manufacturing flow.
How does the SMBJ6.5AHM3_A/H differ from bidirectional SMBJ6.5CA variants?
The SMBJ6.5AHM3_A/H is unidirectional, meaning it conducts only in reverse bias above VBR and blocks forward current beyond ~3.5 V, whereas SMBJ6.5CA is bidirectional with symmetrical clamping in both polarities. This makes SMBJ6.5AHM3_A/H ideal for DC power line or single-polarity signal protection, while SMBJ6.5CA suits AC-coupled or differential lines like RS-485. The SMBJ6.5AHM3_A/H also features a cathode band marking; bidirectional types have no polarity marking.
What is the maximum reverse leakage current for SMBJ6.5AHM3_A/H at its stand-off voltage?
At its 6.5 V stand-off voltage (VWM) and 25 °C ambient temperature, the SMBJ6.5AHM3_A/H exhibits a maximum reverse leakage current (ID) of 500 µA. This low leakage ensures minimal power loss and avoids false triggering in high-impedance circuits such as microcontroller GPIO protection or precision analog sensor inputs. Leakage remains within specification up to +125 °C, with gradual increase per thermal derating curves in the datasheet.
Can SMBJ6.5AHM3_A/H be used in place of SMAJ6.5A in existing designs?
No-SMBJ6.5AHM3_A/H and SMAJ6.5A differ in package size and power rating: SMBJ uses DO-214AA (larger, 600 W), while SMAJ uses DO-214AC (smaller, 400 W). Substituting SMBJ6.5AHM3_A/H for SMAJ6.5A requires verifying PCB pad layout compatibility (SMBJ needs 5.0 mm × 5.0 mm copper pads), thermal relief, and mechanical clearance. The SMBJ6.5AHM3_A/H offers higher surge capability but occupies more board area; direct replacement is not mechanically or electrically drop-in without layout review.
SMBJ6.5AHM3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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):
- 53.6A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMB)
SMBJ6.5AHM3_A/H FAQ
1.How can I place an order for SMBJ6.5AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ6.5AHM3_A/H 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 SMBJ6.5AHM3_A/H reliable?
The price and inventory of SMBJ6.5AHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ6.5AHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMBJ6.5AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ6.5AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ6.5AHM3_A/H?
SMBJ6.5AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ6.5AHM3_A/H 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 SMBJ6.5AHM3_A/H?
For technical support, including SMBJ6.5AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ6.5AHM3_A/H requirements.
6.How does Aetrix verify that SMBJ6.5AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMBJ6.5AHM3_A/H 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 SMBJ6.5AHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMBJ6.5AHM3_A/H?
All SMBJ6.5AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ6.5AHM3_A/H, 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 SMBJ6.5AHM3_A/H part is unused and in its original packaging.
Return procedure for SMBJ6.5AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ6.5AHM3_A/H Tags
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