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Vishay General Semiconductor - Diodes Division SMCJ64AHM3/H
- Part No.:
- SMCJ64AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ64AHM3/H.pdf
- Description:
- TVS DIODE 64VWM 103VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,353
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Product details
Overview
SMCJ64AHM3/H from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) 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, 1500 W peak pulse power (10/1000 μs), 103 V clamping voltage at 14.6 A IPPM, and operates across –55 °C to +150 °C junction temperature range.
For engineers reviewing the SMCJ64AHM3/H datasheet, SMCJ64AHM3/H pinout, SMCJ64AHM3/H application, or SMCJ64AHM3/H equivalent, this part serves as a halogen-free, RoHS-compliant, AEC-Q101 qualified TVS for automotive power supply protection, industrial sensor interface surge hardening, and telecom line-level transient suppression where high-energy clamping and low leakage (<1 μA at VWM) are required.
Technical Context
This unidirectional TVS operates by avalanche breakdown above its specified VBR, providing fast response (<1 ns) to transients while maintaining low leakage current (≤1 μA at 64 V). Its glass-passivated junction ensures stable performance under repeated surge stress, and its SMC package delivers low thermal resistance (RθJL = 15 °C/W) for reliable power dissipation during 1500 W pulses.
The device complies with IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and ISO 7637-2 (automotive load dump) requirements when applied with appropriate PCB layout-specifically using 8.0 mm × 8.0 mm copper pads per terminal per Vishay's derating guidelines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 64 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 12 V/24 V/48 V systems. |
| VBR (min/max) | 71.1 V / 78.6 V at 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on across manufacturing lot and temperature. |
| VC @ IPPM | 103 V at 14.6 A - Clamped voltage during full 1500 W surge; determines maximum stress imposed on downstream ICs. |
| PPPM | 1500 W (10/1000 μs waveform) - Peak energy-handling capability; supports automotive load-dump and inductive-switching transients. |
| ID @ VWM | ≤1 μA - Ultra-low reverse leakage at rated stand-off; preserves battery life and avoids false triggering in high-impedance circuits. |
| TJ max. | +150 °C - Enables operation in under-hood automotive environments and sealed industrial enclosures without derating. |
| Package | SMC (DO-214AB) - Surface-mount, MSL Level 1, 260 °C reflow compatible; supports automated placement and high-current PCB routing. |
Pinout & Package
SMCJ64AHM3/H uses the standard SMC (DO-214AB) package: molded epoxy case with matte tin-plated leads, cathode indicated by a band on the body. The device has two terminals: anode and cathode. Polarity marking is critical-cathode band must align with circuit ground or protected node reference.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Protected node connection point | Connected to the line being safeguarded (e.g., 64 V rail); clamps to ground when transient exceeds VBR. |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return; completes clamping path during avalanche conduction. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood use including temperature cycling, humidity bias, and mechanical shock per JESD22 standards. |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets EU Directive 2011/65/EU and JEDEC J-STD-201 Class 2 whisker resistance; suitable for green manufacturing programs. |
| Low incremental surge resistance | Enables tighter VC/VBR ratio (103 V / 71.1 V ≈ 1.45), minimizing voltage overshoot during fast transients compared to higher-Rsurge TVS devices. |
| MSL Level 1 rating | Allows unlimited floor life and standard 260 °C peak reflow profile without baking-reducing production handling overhead. |
| Glass-passivated junction | Provides stable VBR tolerance and long-term reliability under repeated surge stress, eliminating risk of junction degradation seen in non-passivated alternatives. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 24 V CAN bus power input against load dump (ISO 7637-2 Pulse 5a) and jump-start surges in engine control modules. IC Role / Device Role / Timing Role: Unidirectional clamping device placed between fused 24 V supply and LDO input, absorbing up to 1500 W for <100 ms. Use Value: Limits voltage seen by downstream regulators to ≤103 V, preventing latch-up or permanent damage to 36 V-rated input stages. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA transmitter) from ESD and field-wiring induced transients in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Low-leakage (≤1 μA) TVS mounted directly at connector entry, shunting transients before reaching precision op-amp buffers. Use Value: Maintains signal integrity with no DC offset error due to leakage, while clamping 8 kV contact ESD to <103 V within <1 ns. |
| Telecom Line-Level Surge Suppression | DC-DC Converter Input Protection |
|
Use Scenario: Safeguarding PoE-powered device Ethernet PHY power inputs (e.g., 48 V PSE side) against lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Primary front-end TVS in series with common-mode choke, rated for 1500 W unidirectional pulses. Use Value: Withstands 10/1000 μs surges up to 14.6 A without degradation, preserving isolation barrier integrity and avoiding fuse blow-out. |
Use Scenario: Guarding buck converter input stage against back-EMF from relay coils and motor drivers in embedded power supplies. IC Role / Device Role / Timing Role: Fast-response (sub-ns) clamp placed upstream of input capacitor, diverting inductive kickback away from MOSFET gate drivers. Use Value: Clamps 60 V transients to 103 V within nanoseconds, preventing VGS overstress and ensuring >100,000 surge cycles per MIL-STD-883H Method 3015.8. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ64A-E3/57T | Lower PPPM (400 W), smaller SMA package (DO-214AC), same VWM/VBR range but higher VC (104 V @ 3.9 A). | Not suitable for automotive load dump or high-energy industrial surges; limited to low-power signal lines or secondary protection. | Select only if space-constrained and surge energy is ≤400 W; verify thermal margin with RθJA = 110 °C/W. |
| SMCJ64AHE3_A/H | Same electrical specs and SMC package, but RoHS-compliant commercial grade (not AEC-Q101 qualified); E3 suffix indicates standard tin plating (non-halogen-free). | Lacks automotive qualification and halogen-free compliance; acceptable for industrial/commercial designs without automotive certification needs. | Choose when AEC-Q101 and halogen-free requirements are not mandated; lower cost and identical footprint. |
Compared with SMCJ64AHM3/H, SMAJ64A-E3/57T offers reduced surge capacity and thermal performance in a smaller package, while SMCJ64AHE3_A/H matches form-fit-function but omits automotive qualification and halogen-free materials-making SMCJ64AHM3/H the sole option meeting both AEC-Q101 and green manufacturing mandates.
Availability
SMCJ64AHM3/H is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom line-level surge suppression requiring stable component supply, traceable sourcing, and long-term lifecycle support.
Supply support for SMCJ64AHM3/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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific performance.
The SMCJ series was engineered for high-energy transient suppression in harsh environments-including automotive, industrial, and telecom-delivering consistent clamping behavior, low leakage, and AEC-Q101 validation for mission-critical systems.
FAQ
What is the clamping voltage of SMCJ64AHM3/H at its rated peak pulse current?
The SMCJ64AHM3/H has a maximum clamping voltage (VC) of 103 V at its rated peak pulse current (IPPM) of 14.6 A, measured under the standardized 10/1000 μs waveform. This value defines the upper voltage limit imposed on protected circuitry during a full 1500 W transient event and is confirmed in Vishay's datasheet Document Number 88394, page 2.
Is SMCJ64AHM3/H suitable for automotive applications?
Yes, SMCJ64AHM3/H is AEC-Q101 qualified (as indicated by the HM3 suffix), making it suitable for automotive applications including engine control units, body electronics, and infotainment power supplies. It meets requirements for temperature cycling, mechanical shock, and surge immunity per ISO 7637-2 and IEC 61000-4-5, and is rated for operation from –55 °C to +150 °C.
How does the HM3 suffix differ from the E3 or M3 suffixes in the SMCJ64A family?
The HM3 suffix denotes halogen-free, RoHS-compliant, and AEC-Q101 qualified construction. In contrast, E3 is RoHS-compliant commercial grade (no AEC-Q101), and M3 is halogen-free RoHS-compliant commercial grade (also not AEC-Q101 qualified). Only HM3 variants like SMCJ64AHM3/H satisfy all three criteria simultaneously.
What is the maximum reverse leakage current for SMCJ64AHM3/H at its stand-off voltage?
The maximum reverse leakage current (ID) for SMCJ64AHM3/H is ≤1 μA at its stand-off voltage (VWM) of 64 V and TA = 25 °C. This ultra-low leakage preserves battery life in always-on systems and prevents false triggering in high-impedance sensing circuits, as verified in the Electrical Characteristics table on page 2 of the Vishay datasheet.
Can SMCJ64AHM3/H be used in bidirectional configurations?
No, SMCJ64AHM3/H is a unidirectional TVS diode, identifiable by its cathode band marking. Bidirectional operation requires the CA suffix (e.g., SMCJ64CA). Using SMCJ64AHM3/H in reverse-biased configurations risks permanent failure, as it conducts only from anode to cathode during overvoltage events.
SMCJ64AHM3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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):
- 14.6A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMC)
SMCJ64AHM3/H FAQ
1.How can I place an order for SMCJ64AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ64AHM3/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 SMCJ64AHM3/H reliable?
The price and inventory of SMCJ64AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ64AHM3/H is usually 5 days.
3.What payment methods are accepted for SMCJ64AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ64AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ64AHM3/H?
SMCJ64AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ64AHM3/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 SMCJ64AHM3/H?
For technical support, including SMCJ64AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ64AHM3/H requirements.
6.How does Aetrix verify that SMCJ64AHM3/H is sourced from the original manufacturer or authorized distributors?
All SMCJ64AHM3/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 SMCJ64AHM3/H meets industry standards.
7.What is the process for return or replacement of SMCJ64AHM3/H?
All SMCJ64AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ64AHM3/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 SMCJ64AHM3/H part is unused and in its original packaging.
Return procedure for SMCJ64AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ64AHM3/H Tags
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