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Vishay General Semiconductor - Diodes Division SMA5J6.5AHM3/H
- Part No.:
- SMA5J6.5AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J6.5AHM3/H.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,288
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Product details
Overview
SMA5J6.5AHM3/H from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection 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, 500 W peak pulse power (10/1000 µs), 44.6 A peak pulse current (IPPM), and clamps to ≤11.2 V at rated surge. It is used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial power supplies.
For engineers reviewing the SMA5J6.5AHM3/H datasheet, SMA5J6.5AHM3/H pinout, SMA5J6.5AHM3/H application, or SMA5J6.5AHM3/H equivalent, key selection criteria include clamping voltage under 500 W surge, unidirectional polarity with cathode band marking, AEC-Q101 qualification status, thermal resistance (RθJA = 80 °C/W), and halogen-free RoHS compliance per HM3 suffix.
Technical Context
This TVS diode operates as a voltage-clamped crowbar device triggered by transient overvoltage events exceeding its VBR threshold. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<500 µA at VWM), while the low incremental surge resistance enables effective energy diversion during fast transients (response time <1 ns).
The SMA5J6.5AHM3/H is rated for 150 °C maximum junction temperature and derates linearly above 25 °C ambient per Fig. 2. It supports unidirectional surge handling only, with 40 A IFSM (8.3 ms half-sine) and meets J-STD-020 MSL Level 1 (260 °C peak reflow).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - Maximum continuous reverse operating voltage before conduction begins; defines safe DC/AC bias margin for protected circuit. |
| VBR min/max | 7.22 V / 7.98 V at 10 mA - Confirmed breakdown range ensuring reliable turn-on across process variation and temperature. |
| VC @ IPPM | ≤11.2 V at 44.6 A - Clamping voltage under full 500 W surge; determines maximum stress imposed on downstream components. |
| PPPM | 500 W (10/1000 µs waveform) - Peak surge energy handling capacity; validates suitability for IEC 61000-4-5 Level 4 (4 kV) protection. |
| RθJA | 80 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; guides PCB copper area requirements for thermal management. |
| Polarity | Unidirectional - Cathode marked by band; blocks forward current until VBR exceeded in reverse, enabling DC-biased line protection. |
| Compliance | AEC-Q101 qualified, halogen-free, RoHS-compliant - Meets automotive reliability and environmental standards per HM3 suffix. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002. Cathode identified by black band at one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to ground or low-impedance return in unidirectional clamp configuration; carries full surge current during clamping. |
| Cathode | Reverse-biased terminal / Protection node | Connected to protected line (e.g., 5 V rail); reverse voltage applied here triggers avalanche breakdown when VBR exceeded. |
Key Features
| Feature | Design Value |
|---|---|
| Low incremental surge resistance | Enables tighter clamping (VC = 11.2 V) under 44.6 A surge, reducing voltage overshoot on sensitive loads. |
| Glass passivated chip junction | Ensures stable VBR tolerance and long-term reliability under repeated surge stress without parameter drift. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow without popcorn effect or delamination; no pre-bake required before assembly. |
| AEC-Q101 qualification | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. |
| Halogen-free & RoHS-compliant (HM3) | Fulfills EU ELV and China RoHS requirements; eliminates brominated flame retardants in molding compound. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 5 V supply rails in engine control modules from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between rail and ground to shunt >100 V spikes within nanoseconds. Use Value: Limits rail voltage to ≤11.2 V during 500 W surges, preventing damage to microcontrollers and CAN transceivers. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Low-capacitance TVS on 0–10 V or 4–20 mA output lines to suppress ESD and switching noise. Use Value: Maintains signal integrity with <500 µA leakage at 6.5 V, avoiding DC offset errors in precision measurement circuits. |
| Consumer Power Adapter Input Stage | Telecom DC-DC Converter Input |
Use Scenario: Secondary-side overvoltage suppression in USB-C PD adapters after rectification and filtering. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing residual line transients that bypass primary-side MOVs. Use Value: Withstands 40 A surge (IFSM) and clamps to 11.2 V, protecting synchronous rectifier MOSFETs and secondary controllers. |
Use Scenario: Input rail protection for isolated 48 V to 12 V DC-DC converters in base station power systems. IC Role / Device Role / Timing Role: Primary-side unidirectional TVS absorbing lightning-induced surges coupled via AC input transformers. Use Value: 500 W rating and 80 °C/W RθJA allow operation at full power with minimal heatsinking in confined telecom chassis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J6.5AHE3/H | Same electrical specs, but RoHS-compliant commercial grade (E3) instead of halogen-free (HM3); no AEC-Q101 qualification. | Lacks automotive qualification; suitable for consumer/industrial designs where halogen-free is not mandated. | Select SMA5J6.5AHE3/H if AEC-Q101 and halogen-free requirements are waived and cost optimization is prioritized. |
| SMA6J6.5A-H | Higher PPPM (600 W), same VWM/VBR/VC, but non-AEC-Q101 and standard RoHS (no halogen-free claim). | Offers +20 % surge margin; intended for non-automotive industrial equipment with higher transient exposure. | Choose SMA6J6.5A-H when 600 W surge headroom is needed and automotive qualification/halogen-free are not required. |
Compared with SMA5J6.5AHE3/H and SMA6J6.5A-H, the SMA5J6.5AHM3/H uniquely combines AEC-Q101 qualification, halogen-free construction, and 500 W surge capability-making it the only option among the three validated for safety-critical automotive subsystems requiring both environmental and reliability compliance.
Availability
SMA5J6.5AHM3/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, and telecom power supplies requiring stable component supply with guaranteed halogen-free and AEC-Q101-compliant sourcing.
Supply support for SMA5J6.5AHM3/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMA5J series is part of Vishay's TRANSZORB® TVS platform, engineered for high-power-density transient suppression in space-constrained automotive and industrial environments where robustness and repeatable clamping are critical.
FAQ
What is the clamping voltage of the SMA5J6.5AHM3/H under full-rated surge current?
The SMA5J6.5AHM3/H clamps to a maximum of 11.2 V when subjected to its rated peak pulse current of 44.6 A (10/1000 µs waveform). This value is measured at the device terminals under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. The SMA5J6.5AHM3/H achieves this clamping performance due to its low incremental surge resistance and optimized junction design.
Is the SMA5J6.5AHM3/H suitable for automotive applications?
Yes, the SMA5J6.5AHM3/H is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction-both required for automotive use. It is specified for operation from −55 °C to +150 °C and validated for reliability under temperature cycling, humidity, and mechanical shock per AEC-Q101. The SMA5J6.5AHM3/H is commonly deployed in engine control units, body control modules, and ADAS sensor interfaces.
How does the HM3 suffix differ from the HE3 suffix in the SMA5J6.5A family?
The HM3 suffix on SMA5J6.5AHM3/H denotes halogen-free, RoHS-compliant, and AEC-Q101-qualified construction, whereas the HE3 suffix (e.g., SMA5J6.5AHE3/H) indicates RoHS-compliant and AEC-Q101-qualified but not halogen-free. Both meet automotive reliability standards, but only HM3 satisfies additional environmental mandates such as EU ELV Annex II restrictions on brominated compounds. The SMA5J6.5AHM3/H thus provides broader regulatory compliance for global automotive programs.
What is the thermal resistance of the SMA5J6.5AHM3/H, and how does it affect PCB layout?
The SMA5J6.5AHM3/H has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes standard FR-4 board material and guides minimum copper area requirements: reducing RθJA requires larger or thermally connected copper planes. For sustained surge duty, designers should verify junction temperature stays below 150 °C using this RθJA and actual power dissipation. The SMA5J6.5AHM3/H's thermal performance is validated under these pad conditions.
Does the SMA5J6.5AHM3/H have bidirectional capability?
No, the SMA5J6.5AHM3/H is a unidirectional TVS diode, indicated by the "A" (not "CA") suffix and cathode band marking. It conducts only in reverse bias above VBR and blocks forward current up to its rated IFSM (40 A, 8.3 ms). Bidirectional variants (e.g., SMA5J6.5CA) exist in the same family but are distinct parts with symmetric breakdown in both directions and no polarity marking. The SMA5J6.5AHM3/H must be oriented with cathode toward the protected line for proper operation.
SMA5J6.5AHM3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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):
- 44.6A
- Power - Peak Pulse:
- 500W
- 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)
SMA5J6.5AHM3/H FAQ
1.How can I place an order for SMA5J6.5AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J6.5AHM3/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 SMA5J6.5AHM3/H reliable?
The price and inventory of SMA5J6.5AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J6.5AHM3/H is usually 5 days.
3.What payment methods are accepted for SMA5J6.5AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J6.5AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J6.5AHM3/H?
SMA5J6.5AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J6.5AHM3/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 SMA5J6.5AHM3/H?
For technical support, including SMA5J6.5AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J6.5AHM3/H requirements.
6.How does Aetrix verify that SMA5J6.5AHM3/H is sourced from the original manufacturer or authorized distributors?
All SMA5J6.5AHM3/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 SMA5J6.5AHM3/H meets industry standards.
7.What is the process for return or replacement of SMA5J6.5AHM3/H?
All SMA5J6.5AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J6.5AHM3/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 SMA5J6.5AHM3/H part is unused and in its original packaging.
Return procedure for SMA5J6.5AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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