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Vishay General Semiconductor - Diodes Division SMA5J7.0CAHM3/H
- Part No.:
- SMA5J7.0CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J7.0CAHM3/H.pdf
- Description:
- TVS DIODE 7VWM 12VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,656
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Product details
Overview
SMA5J7.0CAHM3/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on signal and power lines. It features a 7.0 V stand-off voltage (VWM), 12.0 V maximum clamping voltage (VC) at 41.7 A peak pulse current, and 500 W peak pulse power rating with 10/1000 μs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMA5J7.0CAHM3/H datasheet, SMA5J7.0CAHM3/H pinout, SMA5J7.0CAHM3/H application, or SMA5J7.0CAHM3/H equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification status, halogen-free RoHS compliance, and thermal resistance (RθJA = 80 °C/W) under PCB pad-limited conduction.
Technical Context
This device operates as a voltage-clamped crowbar during transients, leveraging an avalanche breakdown mechanism with symmetrical forward/reverse characteristics due to its bidirectional construction. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 μA at VWM), while MSL Level 1 moisture sensitivity supports lead-free reflow up to 260 °C peak.
The SMA5J7.0CAHM3/H is rated for -55 °C to +150 °C operating junction temperature and exhibits low incremental surge resistance, enabling consistent clamping performance across repetitive surge events. Its 500 W PPPM rating applies under standardized 10/1000 μs waveform conditions with derating above 25 °C ambient per Fig. 2 of the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - Maximum continuous reverse working voltage before clamping initiates; defines safe operating margin for 5 V–7 V signal/power rails. |
| VBR min/max | 7.78 V / 8.60 V - Breakdown voltage range at 10 mA test current; guarantees reliable turn-on within tight tolerance for predictable protection threshold. |
| VC @ IPPM | 12.0 V - Clamping voltage at 41.7 A peak pulse current; limits downstream voltage stress to sub-12 V during 500 W surge events. |
| PPPM | 500 W - Peak pulse power handling with 10/1000 μs waveform; supports robust immunity against ISO 7637-2 Pulse 1/2/5a and IEC 61000-4-5 surges. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive environments and sealed industrial enclosures. |
| RθJA | 80 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs minimum PCB copper area needed for thermal management. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, halogen-free, RoHS-compliant, with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. No polarity marking on bidirectional types.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional terminal pair | No defined anode/cathode; terminals are interchangeable - enables placement without orientation check on PCB. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - required for engine control, ADAS sensor, and infotainment modules. |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets JEDEC J-STD-203 and IEC 61249-2-21 standards - eliminates brominated flame retardants for safer end-of-life processing and regulatory compliance. |
| Low profile SMA package | Height ≤ 2.29 mm (0.090") - fits space-constrained layouts in automotive ECUs and portable industrial controllers without mechanical interference. |
| MSL Level 1, 260 °C peak reflow | Zero floor life limitation - supports unlimited storage and single-pass lead-free assembly without baking or special handling. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive switching transients in vehicle subsystems. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt surge energy before reaching sensitive analog front-ends or communication ICs. Use Value: Maintains signal integrity below 12.0 V clamping threshold during 500 W transients, preventing latch-up or permanent damage to 3.3 V/5 V interface ICs. |
Use Scenario: Safeguarding PLC digital input modules and fieldbus nodes (RS-485, Profibus) against ESD and lightning-induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Primary line-level TVS element mounted adjacent to terminal blocks or connectors to absorb fast-rising common-mode transients. Use Value: Delivers symmetrical clamping response with <1.0 μA leakage at 7.0 V, ensuring minimal impact on logic thresholds and long-term system stability. |
| Consumer Power Adapter Input | Telecom Line Card Surge Suppression |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters and USB PD chargers exposed to mains-borne surges and hot-plug transients. IC Role / Device Role / Timing Role: Standoff-rated protector on DC output rail (e.g., 5 V, 9 V, 12 V) to prevent overvoltage propagation to connected devices. Use Value: 7.0 V VWM aligns precisely with nominal 5 V/9 V rails, while 12.0 V VC ensures downstream ICs remain within absolute maximum ratings during surge events. |
Use Scenario: Front-end protection of Ethernet PHYs and DSL line drivers in telecom access equipment subjected to induced surges from nearby power lines. IC Role / Device Role / Timing Role: Fast-response transient suppressor integrated into hybrid coupler or transformer secondary side to limit differential-mode overvoltage. Use Value: 10/1000 μs waveform capability and 41.7 A IPPM provide validated immunity to ITU-T K.20/K.21 test levels without degrading signal bandwidth. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J7.0CAHE3/H | Same electrical specs and package, but RoHS-compliant commercial grade (not halogen-free); lacks JESD201 Class 2 whisker resistance certification. | Approved for non-automotive industrial and consumer use where halogen-free requirement is not mandated by OEM or regional regulation. | Select SMA5J7.0CAHE3/H when cost optimization is prioritized and halogen-free compliance is not contractually required. |
| SMA6J7.0CAHM3/H | Higher 600 W PPPM rating, identical VWM/VC, same AEC-Q101/HM3 qualifications; larger thermal mass due to SMA (DO-214AC) variant with thicker die. | Preferred for systems requiring extended surge endurance beyond 500 W, such as heavy-duty vehicle battery monitoring or railway signaling interfaces. | Choose SMA6J7.0CAHM3/H when design validation requires margin above 500 W or repeated surge exposure per ISO 16750-2. |
Compared with SMA5J7.0CAHM3/H, SMA5J7.0CAHE3/H offers identical protection performance without halogen-free assurance, while SMA6J7.0CAHM3/H delivers higher surge energy capacity in the same footprint - enabling upgrade paths without layout change only if thermal and mechanical clearance permits.
Availability
SMA5J7.0CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial I/O protection, and telecom line card designs requiring stable component supply with AEC-Q101 qualification and halogen-free compliance.
Supply support for SMA5J7.0CAHM3/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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for demanding industrial and automotive applications.
The SMA5J series is engineered specifically for high-power-density transient suppression in space-constrained, thermally challenging environments - targeting automotive electronics, industrial controls, and infrastructure equipment needing certified surge resilience.
FAQ
What does the "HM3" suffix indicate in SMA5J7.0CAHM3/H?
The "HM3" suffix in SMA5J7.0CAHM3/H denotes halogen-free, RoHS-compliant construction meeting JEDEC J-STD-203 and IEC 61249-2-21 standards. It also confirms qualification to AEC-Q101 for automotive use and JESD201 Class 2 whisker resistance. This distinguishes SMA5J7.0CAHM3/H from E3-suffix variants that lack halogen-free certification.
Is SMA5J7.0CAHM3/H bidirectional, and how does that affect circuit placement?
Yes, SMA5J7.0CAHM3/H is a bidirectional TVS diode - its terminals are electrically symmetrical with no cathode band marking. This allows unrestricted orientation during automated placement, eliminating polarity verification steps and reducing SMT line programming complexity. The device clamps equally in both directions at 7.0 V VWM and 12.0 V VC.
What is the maximum clamping voltage of SMA5J7.0CAHM3/H, and under what test condition is it specified?
The maximum clamping voltage of SMA5J7.0CAHM3/H is 12.0 V, measured at 41.7 A peak pulse current (IPPM) using the standardized 10/1000 μs double-exponential waveform. This value is guaranteed across the full operating temperature range (-55 °C to +150 °C) and defines the upper voltage limit imposed on protected circuits during surge events.
Does SMA5J7.0CAHM3/H require derating at elevated ambient temperatures?
Yes, SMA5J7.0CAHM3/H must be derated above 25 °C ambient per Figure 2 in the Vishay datasheet (Doc. #88875). Its 500 W peak pulse power rating decreases linearly with rising junction temperature, reaching ~350 W at 85 °C ambient on standard PCB pads. Thermal design must account for RθJA = 80 °C/W and actual copper area used.
How does the AEC-Q101 qualification of SMA5J7.0CAHM3/H benefit automotive designs?
AEC-Q101 qualification for SMA5J7.0CAHM3/H validates performance across stress tests including temperature cycling, high-temperature reverse bias (HTRB), and ESD (HBM ≥ 8 kV). This assures reliability in under-hood and cabin environments, simplifies automotive qualification processes, and meets OEM requirements for critical subsystems like ADAS sensors and body control modules.
SMA5J7.0CAHM3/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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 7V
- Voltage - Breakdown (Min):
- 7.78V
- Voltage - Clamping (Max) @ Ipp:
- 12V
- Current - Peak Pulse (10/1000µs):
- 41.7A
- 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)
SMA5J7.0CAHM3/H FAQ
1.How can I place an order for SMA5J7.0CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J7.0CAHM3/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 SMA5J7.0CAHM3/H reliable?
The price and inventory of SMA5J7.0CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J7.0CAHM3/H is usually 5 days.
3.What payment methods are accepted for SMA5J7.0CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J7.0CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J7.0CAHM3/H?
SMA5J7.0CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J7.0CAHM3/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 SMA5J7.0CAHM3/H?
For technical support, including SMA5J7.0CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J7.0CAHM3/H requirements.
6.How does Aetrix verify that SMA5J7.0CAHM3/H is sourced from the original manufacturer or authorized distributors?
All SMA5J7.0CAHM3/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 SMA5J7.0CAHM3/H meets industry standards.
7.What is the process for return or replacement of SMA5J7.0CAHM3/H?
All SMA5J7.0CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J7.0CAHM3/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 SMA5J7.0CAHM3/H part is unused and in its original packaging.
Return procedure for SMA5J7.0CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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