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Vishay General Semiconductor - Diodes Division SMA5J11CAHM3/I
- Part No.:
- SMA5J11CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J11CAHM3/I.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,237
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Product details
Overview
SMA5J11CAHM3/I 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 11 V standoff voltage (VWM), 12.2–13.5 V breakdown range (VBR), 18.2 V clamping voltage (VC) at 27.5 A peak pulse current, and 500 W peak pulse power rating with 10/1000 µs waveform - used to protect automotive sensor interfaces and industrial I/O circuits against ESD and load dump transients.
For engineers reviewing the SMA5J11CAHM3/I datasheet, SMA5J11CAHM3/I pinout, SMA5J11CAHM3/I application, or SMA5J11CAHM3/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification (via HM3 suffix), halogen-free RoHS compliance, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This device operates as a voltage-clamped shunt protector: when reverse (or forward, in bidirectional mode) transient voltage exceeds VBR, it avalanches into low-impedance conduction, limiting voltage across protected circuitry to ≤18.2 V. Its glass-passivated junction ensures stable breakdown and low leakage (<1.0 µA at 11 V).
Thermal performance is defined by RθJA = 80 °C/W and RθJL = 25 °C/W, enabling reliable operation up to TJ = 150 °C. The SMA package supports MSL Level 1 handling and 260 °C reflow peak per J-STD-020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - maximum continuous reverse operating voltage before clamping begins; defines safe working margin for 12 V nominal systems. |
| VBR min/max | 12.2 V / 13.5 V at 1 mA - verified avalanche onset range; ensures predictable turn-on across temperature and unit variation. |
| VC @ IPPM | 18.2 V at 27.5 A - clamped voltage during 500 W transient; limits stress on downstream ICs like CAN transceivers or ADC inputs. |
| PPPM | 500 W - peak pulse power handling with 10/1000 µs waveform; sufficient for ISO 7637-2 Pulse 1/2/5a and IEC 61000-4-5 Level 3 surges. |
| IPPM | 27.5 A - peak surge current capability; derived from PPPM/VC, directly usable for PCB trace sizing and fuse coordination. |
| TJ range | −55 °C to +150 °C - full automotive-grade operating and storage temperature range; validated for under-hood and engine control module use. |
| Leakage @ VWM | <1.0 µA - minimal standby power loss and signal integrity impact on high-impedance sensor bias networks. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional configuration with no polarity marking (unlike unidirectional variants which feature cathode band). Dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H); matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional terminal pair | No functional polarity - either end serves as anode or cathode depending on transient polarity; enables single-component protection of AC-coupled or differential lines. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive electronics per stress test requirements including HTOL, TC, UHAST, and ESD - supports Tier-1 BOM inclusion without additional qualification. |
| Halogen-free & RoHS-compliant | Meets JEDEC JS709E and IPC-1752A material declarations; eliminates brominated flame retardants while maintaining UL 94 V-0 molding compound flammability rating. |
| Low incremental surge resistance | Enables tighter VC tolerance and faster energy diversion - critical for protecting fast-switching MOSFET gates and precision analog front-ends. |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without moisture sensitivity concerns or baking requirements prior to placement. |
| Glass-passivated junction | Provides stable VBR over lifetime and improved resistance to humidity-induced parameter drift versus epoxy-passivated alternatives. |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting LIN bus transceivers and pressure/temperature sensor outputs from battery load dump and alternator ripple in engine control units. IC Role / Device Role / Timing Role: Shunt TVS element placed between signal line and ground, responding within <1 ns to clamp transients above 12 V. Use Value: Maintains signal integrity during ISO 7637-2 Pulse 5a (75 V/100 ms) events while drawing <1 µA leakage at 12 V system voltage. |
Use Scenario: Safeguarding 24 V DC digital input channels on programmable logic controllers exposed to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Bidirectional voltage clamp on isolated input optocoupler side, absorbing ±1 kV/500 A transients per IEC 61000-4-5. Use Value: Limits voltage to ≤18.2 V during 500 W surges, preventing damage to upstream Schmitt trigger comparators and microcontroller GPIOs. |
| Telecom Line Surge Suppression | Consumer Appliance Motor Drive Protection |
Use Scenario: Secondary-side protection on Ethernet PHY power rails and RS-485 data lines in network edge devices subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Low-capacitance (CJ ≈ 100 pF typical at 0 V) bidirectional clamp integrated into board-level surge protection circuit. Use Value: Clamps common-mode transients to <18.2 V without distorting 100 Mbps differential signaling due to symmetrical response and minimal parasitic capacitance. |
Use Scenario: Suppressing inductive kickback from brushed DC motor commutation in smart home appliances (e.g., washing machine control boards). IC Role / Device Role / Timing Role: Parallel-connected TVS across motor terminals or H-bridge supply rails to divert 500 W energy pulses away from driver ICs. Use Value: Withstands repeated 27.5 A surges at 10/1000 µs, extending lifetime of half-bridge MOSFETs rated for 30 V drain-source breakdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ11CA | Same VWM (11 V), identical SMA package, but not AEC-Q101 qualified; VC = 18.2 V at 27.5 A matches exactly. | Targeted at commercial/industrial designs where automotive qualification is not required; lacks HM3 halogen-free and AEC-Q101 traceability. | Select when cost sensitivity outweighs automotive compliance needs and halogen-free materials are optional. |
| ON Semiconductor 1.5SMC11CA | Higher PPPM = 1500 W, larger SMC (DO-214AB) package (7.11 mm × 6.22 mm), VC = 18.2 V at 82.5 A - same clamping but higher surge capacity and footprint. | Suitable for higher-energy environments (e.g., 48 V telecom power rails), but requires PCB layout change and increased board area. | Choose only if 500 W is insufficient and mechanical redesign is acceptable; not drop-in compatible with SMA5J11CAHM3/I. |
Compared with SMAJ11CA and 1.5SMC11CA, SMA5J11CAHM3/I uniquely combines AEC-Q101 qualification, halogen-free construction, and precise 500 W/18.2 V clamping in the compact SMA footprint - making it optimal for space-constrained automotive modules requiring full compliance documentation and zero material exemptions.
Availability
SMA5J11CAHM3/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC inputs, telecom line protection, and consumer appliance motor drive circuits requiring stable component supply with full AEC-Q101 traceability and halogen-free compliance.
Supply support for SMA5J11CAHM3/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, rectifiers, TVS, MOSFETs, and optoelectronics with emphasis on reliability, power efficiency, and automotive-grade validation.
The SMA5J series was engineered specifically for high-power-density transient suppression in harsh environments - delivering 500 W surge capability in the industry-standard SMA package while meeting AEC-Q101 and RoHS requirements.
FAQ
What does the "HM3" suffix indicate in SMA5J11CAHM3/I?
The HM3 suffix in SMA5J11CAHM3/I denotes halogen-free, RoHS-compliant construction with full AEC-Q101 qualification. It confirms compliance with JEDEC JS709E material standards, UL 94 V-0 flammability, and automotive stress testing - distinguishing it from commercial-grade M3 or E3 variants.
Is SMA5J11CAHM3/I suitable for protecting CAN FD bus lines?
Yes, SMA5J11CAHM3/I is suitable for CAN FD protection: its 11 V VWM aligns with 12 V supply rails, 18.2 V VC stays below typical CAN transceiver absolute maximum ratings (±40 V), and bidirectional operation handles both dominant/recessive state transients without polarity concerns.
Does SMA5J11CAHM3/I have polarity markings on the package?
No, SMA5J11CAHM3/I has no polarity markings because it is a bidirectional TVS diode. Unlike unidirectional variants (e.g., SMA5J11A), it lacks a cathode band - both terminals are functionally identical, enabling symmetric placement on differential or AC-coupled signal paths.
What is the maximum allowable PCB pad size for optimal thermal performance of SMA5J11CAHM3/I?
For optimal thermal performance, SMA5J11CAHM3/I should be mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in the Vishay datasheet. Smaller pads increase RθJA beyond the rated 80 °C/W and risk thermal runaway during repetitive surges.
How does SMA5J11CAHM3/I compare to SMA5J11A in terms of electrical behavior?
SMA5J11CAHM3/I is bidirectional with symmetrical clamping in both directions, while SMA5J11A is unidirectional and conducts only in reverse bias. SMA5J11CAHM3/I has no cathode band, higher ID limit (1.0 µA vs. 1.0 µA at VWM), and identical VBR, VC, and PPPM - but cannot replace SMA5J11A in circuits requiring forward conduction blocking.
SMA5J11CAHM3/I 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):
- 11V
- Voltage - Breakdown (Min):
- 12.2V
- Voltage - Clamping (Max) @ Ipp:
- 18.2V
- Current - Peak Pulse (10/1000µs):
- 27.5A
- 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)
SMA5J11CAHM3/I FAQ
1.How can I place an order for SMA5J11CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J11CAHM3/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 SMA5J11CAHM3/I reliable?
The price and inventory of SMA5J11CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J11CAHM3/I is usually 5 days.
3.What payment methods are accepted for SMA5J11CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J11CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J11CAHM3/I?
SMA5J11CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J11CAHM3/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 SMA5J11CAHM3/I?
For technical support, including SMA5J11CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J11CAHM3/I requirements.
6.How does Aetrix verify that SMA5J11CAHM3/I is sourced from the original manufacturer or authorized distributors?
All SMA5J11CAHM3/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 SMA5J11CAHM3/I meets industry standards.
7.What is the process for return or replacement of SMA5J11CAHM3/I?
All SMA5J11CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J11CAHM3/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 SMA5J11CAHM3/I part is unused and in its original packaging.
Return procedure for SMA5J11CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA5J11CAHM3/I Tags
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