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Vishay General Semiconductor - Diodes Division SMBJ64AHM3_A/I
- Part No.:
- SMBJ64AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ64AHM3_A/I.pdf
- Description:
- TVS DIODE 64VWM 103VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,445
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Product details
Overview
SMBJ64AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in the SMB (DO-214AA) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 64 V stand-off voltage (VWM), 71.1–78.6 V breakdown voltage (VBR) at 1 mA, 103 V maximum clamping voltage (VC) at 5.8 A peak pulse current, and 600 W peak pulse power rating with a 10/1000 µs waveform - deployed in industrial motor drives, automotive ECUs, and telecom power supplies.
For engineers reviewing the SMBJ64AHM3_A/I datasheet, SMBJ64AHM3_A/I pinout, SMBJ64AHM3_A/I application, or SMBJ64AHM3_A/I equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), junction temperature range (−55 to +150 °C), and halogen-free RoHS-compliant construction per JESD201 Class 2 whisker testing.
Technical Context
This TVS diode operates as a unidirectional clamping device: reverse-biased during normal operation, it remains high-impedance until transient overvoltage exceeds VBR, then rapidly switches to low-impedance conduction to clamp voltage at ≤103 V. Its glass-passivated junction ensures stable leakage (<1.0 µA at 64 V) and fast response time (<1.0 ns).
Rated for 600 W peak pulse power under 10/1000 µs waveform and 100 A non-repetitive forward surge (8.3 ms half-sine), it supports repetitive transients at 0.01 % duty cycle. Thermal performance is defined by RθJA = 100 °C/W (on 0.2" × 0.2" copper pads) and RθJL = 20 °C/W, enabling reliable operation up to TJ = 150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 64 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe DC rail margin. |
| VBR (min/max) | 71.1 V / 78.6 V at IT = 1 mA - Confirmed breakdown threshold range; ensures consistent turn-on across production lots. |
| VC @ IPPM | 103 V at 5.8 A - Clamped voltage during 10/1000 µs transient; determines protected circuit's maximum stress level. |
| PPPM | 600 W - Peak pulse power handling capability; validates protection against IEC 61000-4-5 Level 4 surges. |
| IFSM | 100 A - Non-repetitive forward surge rating (8.3 ms half-sine); supports inrush and fault-current events. |
| TJ Range | −55 °C to +150 °C - Full operational junction temperature range; enables use in under-hood automotive and industrial environments. |
| Package | SMB (DO-214AA) - Surface-mount outline with 5.59 mm × 4.06 mm footprint; compatible with automated SMT placement and reflow. |
Pinout & Package
Package: SMB (DO-214AA), 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 one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry (unidirectional) | Connected to lower-potential side of protected line; conducts during positive transients when cathode is at higher potential. |
| Cathode | Reverse-biased terminal (marked with band) | Connected to higher-potential side (e.g., VCC rail); blocks normal operation, avalanches during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Validates compliance with IEC 61000-4-5 surge immunity requirements for industrial and automotive systems. |
| AEC-Q101 qualified (HM3 suffix) | Confirms reliability for automotive electronics including engine control units and body modules under temperature cycling and humidity testing. |
| Halogen-free & RoHS-compliant | Meets environmental compliance mandates (JESD201 Class 2 whisker test) for global OEM supply chains. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for downstream ICs like MCUs and gate drivers. |
| 100 °C/W junction-to-ambient thermal resistance | Enables thermal design on standard PCB copper pads (0.2" × 0.2") without heatsinks in most 5–10 W power applications. |
Applications
| Automotive Power Rail Protection | Industrial PLC I/O Module Protection |
|---|---|
|
Use Scenario: Protecting 12 V/24 V battery-fed microcontroller power inputs in engine control units against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between VBAT and GND, absorbing >100 V transients within nanoseconds. Use Value: Limits MCU supply rail to ≤103 V during 100 V/100 ms load dump events, preventing latch-up or permanent damage. |
Use Scenario: Safeguarding analog input channels (4–20 mA, 0–10 V) in programmable logic controllers exposed to field wiring surges. IC Role / Device Role / Timing Role: Low-leakage (≤1.0 µA) TVS mounted at connector entry point, shunting induced transients before signal conditioning circuitry. Use Value: Maintains <1 µA reverse leakage at 64 V, avoiding measurement drift while clamping ESD and lightning-induced spikes to <103 V. |
| Telecom DC Power Supply Protection | Motor Drive Gate Driver Protection |
|
Use Scenario: Secondary-side overvoltage suppression on −48 V telecom rectifier outputs subjected to switching transients and lightning surges. IC Role / Device Role / Timing Role: Unidirectional TVS connected cathode-to-rail, clamping negative-going transients on grounded-return systems. Use Value: Withstands 600 W peak pulses and operates reliably from −40 °C to +85 °C ambient, meeting GR-1089-CORE requirements. |
Use Scenario: Protecting high-side and low-side MOSFET gate drive signals in BLDC inverters from Miller-induced voltage spikes. IC Role / Device Role / Timing Role: Fast-response (<1 ns) TVS placed across gate-source terminals to clamp dv/dt-induced overshoot. Use Value: 103 V clamping voltage prevents gate oxide breakdown in 600 V MOSFETs while adding <1 pF capacitance at 0 V bias. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64AHE3_A/I | Same electrical specs, but RoHS-compliant commercial grade (not AEC-Q101 qualified); uses standard tin plating without halogen-free constraint. | Lacks automotive qualification; suitable for industrial/commercial designs where AEC-Q101 is not mandated. | Select SMBJ64AHE3_A/I for cost-sensitive non-automotive applications requiring identical clamping performance. |
| SMAJ64AHE3/A | Lower peak pulse power (400 W vs. 600 W); SMA package (smaller footprint, higher RθJA = 140 °C/W); same VWM/VC ratings. | Reduced surge handling margin; limited to lower-energy transients or space-constrained layouts where SMB is not feasible. | Choose SMAJ64AHE3/A only when board area is critical and transient energy remains below 400 W capability. |
Compared with SMBJ64AHM3_A/I, SMBJ64AHE3_A/I offers identical protection performance without automotive qualification, while SMAJ64AHE3/A trades 33 % lower surge capacity and higher thermal resistance for a 30 % smaller footprint - making SMBJ64AHM3_A/I the optimal choice for AEC-Q101-compliant, high-energy industrial and automotive deployments.
Availability
SMBJ64AHM3_A/I is available at Aetrix Electronics and suitable for automotive ECU designs, industrial PLC I/O modules, and telecom DC power supplies requiring stable component supply with full AEC-Q101 traceability and halogen-free compliance.
Supply support for SMBJ64AHM3_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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where robustness, AEC-Q101 qualification, and precise clamping are mandatory.
FAQ
What is the clamping voltage of SMBJ64AHM3_A/I at its rated peak pulse current?
The SMBJ64AHM3_A/I has a maximum clamping voltage (VC) of 103 V at 5.8 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuits during surge events. The SMBJ64AHM3_A/I maintains this clamping performance across its full operating temperature range (−55 °C to +150 °C), ensuring consistent protection in demanding environments.
Is SMBJ64AHM3_A/I qualified for automotive applications?
Yes, SMBJ64AHM3_A/I is AEC-Q101 qualified, as confirmed by the "HM3" suffix in its ordering code - indicating halogen-free, RoHS-compliant construction and full qualification for automotive electronics. It undergoes rigorous stress testing including temperature cycling, humidity bias, and mechanical shock per AEC-Q101 Rev D. The SMBJ64AHM3_A/I is routinely deployed in engine control units, body control modules, and ADAS power supplies where long-term reliability under thermal and vibration stress is required.
What is the reverse leakage current specification for SMBJ64AHM3_A/I at its stand-off voltage?
The SMBJ64AHM3_A/I exhibits a maximum reverse leakage current (ID) of 1.0 µA at its 64 V stand-off voltage (VWM) and 25 °C ambient temperature. This low leakage ensures minimal power loss and avoids interference with sensitive analog or low-power circuits. Leakage remains below 5.0 µA up to 85 °C, supporting stable operation in industrial and automotive under-hood applications where SMBJ64AHM3_A/I is commonly used.
How does the SMBJ64AHM3_A/I package compare to SMAJ and SMCJ series in terms of surge handling?
The SMBJ64AHM3_A/I uses the SMB (DO-214AA) package, delivering 600 W peak pulse power - higher than the 400 W of the smaller SMAJ series (SMA package) and lower than the 1500 W of the larger SMCJ series (SMC package). Its RθJA of 100 °C/W balances thermal performance and board area, making SMBJ64AHM3_A/I ideal for mid-tier surge protection where space constraints preclude SMCJ but energy demands exceed SMAJ capability. All three share identical VWM/VC ratings for direct system-level comparison.
Does SMBJ64AHM3_A/I support bidirectional transient suppression?
No, SMBJ64AHM3_A/I is a unidirectional TVS diode, as indicated by the "A" suffix and absence of "CA" in its part number. It functions only in reverse-bias mode - conducting when cathode voltage exceeds anode by >VBR. For bidirectional protection (e.g., AC lines or differential data buses), Vishay offers the SMBJ64CA variant. Using SMBJ64AHM3_A/I in bidirectional configurations would leave positive transients unprotected; always verify polarity alignment during layout of SMBJ64AHM3_A/I in DC systems.
SMBJ64AHM3_A/I 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):
- 64V
- Voltage - Breakdown (Min):
- 71.1V
- Voltage - Clamping (Max) @ Ipp:
- 103V
- Current - Peak Pulse (10/1000µs):
- 5.8A
- 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)
SMBJ64AHM3_A/I FAQ
1.How can I place an order for SMBJ64AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ64AHM3_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 SMBJ64AHM3_A/I reliable?
The price and inventory of SMBJ64AHM3_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 SMBJ64AHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMBJ64AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ64AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ64AHM3_A/I?
SMBJ64AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ64AHM3_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 SMBJ64AHM3_A/I?
For technical support, including SMBJ64AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ64AHM3_A/I requirements.
6.How does Aetrix verify that SMBJ64AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMBJ64AHM3_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 SMBJ64AHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMBJ64AHM3_A/I?
All SMBJ64AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ64AHM3_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 SMBJ64AHM3_A/I part is unused and in its original packaging.
Return procedure for SMBJ64AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ64AHM3_A/I Tags
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