My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMA5J8.5CAHE3/61
- Part No.:
- SMA5J8.5CAHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J8.5CAHE3/61.pdf
- Description:
- TVS DIODE 8.5VWM 14.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,034
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMA5J8.5CAHE3/61 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 8.5 V stand-off voltage (VWM), 9.44–10.4 V breakdown voltage (VBR), 14.4 V clamping voltage (VC) at 10 A peak pulse current, and 500 W peak pulse power rating - deployed in automotive sensor interfaces, industrial I/O protection, and telecom line receivers.
For engineers reviewing the SMA5J8.5CAHE3/61 datasheet, SMA5J8.5CAHE3/61 pinout, SMA5J8.5CAHE3/61 application, or SMA5J8.5CAHE3/61 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low incremental surge resistance, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This device operates as a voltage-clamped shunt protector, responding to transients within picoseconds via avalanche breakdown. Its bidirectional symmetry ensures identical electrical characteristics in both polarities, with no polarity marking required on the SMA package.
Designed for 10/1000 µs waveform compliance, it delivers stable clamping under repetitive surge stress when mounted per recommended pad layout, and maintains thermal stability up to 150 °C junction temperature with RθJA = 80 °C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.5 V - Maximum continuous reverse operating voltage before conduction begins |
| VBR (min/max) | 9.44 V / 10.4 V at 1 mA - Ensures reliable triggering above system operating voltage with margin |
| VC @ IPPM | 14.4 V at 10 A - Limits downstream voltage during 500 W surge, protecting 12 V logic interfaces |
| PPPM | 500 W - Withstands high-energy transients such as ISO 7637-2 Pulse 1/2a/5a in automotive environments |
| ID @ VWM | 1.0 µA - Negligible leakage at rated stand-off, preserving signal integrity in high-impedance circuits |
| TJ max. | 150 °C - Enables operation in under-hood automotive and industrial control cabinet environments |
| Package | SMA (DO-214AC) - Surface-mount footprint compatible with standard reflow profiles and J-STD-020 MSL level 1 |
Pinout & Package
Two-terminal bidirectional device in SMA (DO-214AC) package; no polarity marking. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102, with 0.074" (1.88 mm) maximum body width and 0.208" (5.28 mm) maximum length.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked) | Bidirectional surge path | Both terminals function identically - connects across protected line and ground or differential pair without orientation constraint |
| Case (body) | Non-electrical mechanical interface | Plastic-molded DO-214AC housing provides UL 94 V-0 flammability rating and mechanical robustness |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| Glass passivated junction | Enhances long-term stability and moisture resistance versus epoxy-passivated alternatives |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., EFT bursts), improving protection margin |
| MSL Level 1 (260 °C peak) | Enables single-reflow assembly without pre-baking, reducing manufacturing complexity and cost |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive switching spikes in engine control units. IC Role / Device Role / Timing Role: Bidirectional shunt clamp placed between signal line and chassis ground, absorbing energy without disrupting DC bias or signal swing. Use Value: Clamps transients to ≤14.4 V while maintaining <1.0 µA leakage at 8.5 V, ensuring sensor accuracy and MCU input safety. | Use Scenario: Safeguarding 24 V digital input modules in programmable logic controllers against field-wiring surges and relay contact bounce. IC Role / Device Role / Timing Role: Parallel-connected TVS across input terminals, diverting surge current away from optocoupler input stages and series current-limiting resistors. Use Value: Withstands repeated 500 W pulses per IEC 61000-4-5 Combination Wave, extending module service life in factory automation. |
| Telecom Line Receiver Protection | Consumer Power Adapter Output Protection |
Use Scenario: Shielding RS-485/RS-232 transceiver ICs on base station backplanes from lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Differential-mode TVS across A/B lines, suppressing common-mode and differential-mode transients simultaneously. Use Value: Symmetrical bidirectional response ensures equal clamping on both polarities, preserving data integrity during ±1 kV ESD events. | Use Scenario: Preventing overvoltage damage to USB-C PD controller ICs and downstream load switches during AC-DC adapter output fault conditions. IC Role / Device Role / Timing Role: Secondary-side TVS placed between +VOUT and GND after secondary rectification, acting as last-line defense before regulation stage. Use Value: 14.4 V clamping limits stress on 12–15 V rated MOSFETs and capacitors, avoiding catastrophic failure during open-loop overvoltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J8.5CA-M3/61 | Halogen-free, RoHS-compliant variant; identical electrical specs and AEC-Q101 qualification absent | Suitable for commercial/industrial designs requiring halogen-free materials but not automotive qualification | Select when halogen-free compliance is mandatory and AEC-Q101 is not required |
| SMCJ8.5CAHE3/61 | Same VWM/VC, but higher PPPM = 1500 W in larger SMC (DO-214AB) package; 2.5× footprint area | Used where higher surge energy handling is needed and PCB space allows larger package | Choose only if 1500 W rating is required and board layout accommodates SMC footprint |
Compared with SMA5J8.5CA-M3/61, the SMA5J8.5CAHE3/61 adds AEC-Q101 qualification for automotive use; compared with SMCJ8.5CAHE3/61, it trades 3× lower surge capacity for 40 % smaller PCB area and compatible reflow profile.
Availability
SMA5J8.5CAHE3/61 is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and telecom infrastructure requiring stable component supply with full traceability and lifecycle management.
Supply support for SMA5J8.5CAHE3/61 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, MOSFETs, and protection devices with emphasis on reliability and application-specific performance.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained, high-reliability applications - particularly targeting automotive, industrial, and communications equipment where AEC-Q101 compliance and robust surge immunity are mandatory.
FAQ
What is the clamping voltage of the SMA5J8.5CAHE3/61 under peak surge conditions?
The SMA5J8.5CAHE3/61 has a maximum clamping voltage (VC) of 14.4 V at 10 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream circuitry remains below safe voltage thresholds during standardized surge events. The SMA5J8.5CAHE3/61 achieves this clamping performance while maintaining low incremental surge resistance, critical for fast-rising transients.
Is the SMA5J8.5CAHE3/61 suitable for automotive applications?
Yes, the SMA5J8.5CAHE3/61 is AEC-Q101 qualified and explicitly designated for automotive use with suffix "HE3". It undergoes stress testing including temperature cycling, high-temperature reverse bias, and ESD per the AEC-Q101 standard. The SMA5J8.5CAHE3/61 is commonly deployed in engine control units, body electronics, and ADAS sensor interfaces where reliability under harsh thermal and electrical conditions is essential.
Does the SMA5J8.5CAHE3/61 have polarity markings on the package?
No, the SMA5J8.5CAHE3/61 is a bidirectional TVS diode and carries no polarity marking on the SMA (DO-214AC) package. Unlike unidirectional variants (e.g., SMA5J8.5A), it functions identically in both directions, making orientation irrelevant during placement. This simplifies automated assembly and eliminates risk of reverse installation in differential or AC-coupled protection schemes.
What is the maximum junction temperature rating for the SMA5J8.5CAHE3/61?
The SMA5J8.5CAHE3/61 has a maximum operating junction temperature (TJ) of +150 °C, as specified in its thermal characteristics table. This rating enables reliable operation in under-hood automotive environments and industrial enclosures with elevated ambient temperatures. Derating curves in the datasheet confirm sustained performance up to this limit when mounted on the recommended 0.2" × 0.2" copper pads.
How does the SMA5J8.5CAHE3/61 differ from the SMA5J8.5A variant?
The SMA5J8.5CAHE3/61 is bidirectional with symmetrical clamping in both polarities and no cathode band, whereas the SMA5J8.5A is unidirectional with a marked cathode end and forward voltage drop (VF = 3.5 V at 25 A). The SMA5J8.5CAHE3/61 supports AC or floating-line protection, while the SMA5J8.5A is restricted to DC-biased applications where polarity is fixed and forward conduction must be avoided.
SMA5J8.5CAHE3/61 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):
- 8.5V
- Voltage - Breakdown (Min):
- 9.44V
- Voltage - Clamping (Max) @ Ipp:
- 14.4V
- Current - Peak Pulse (10/1000µs):
- 34.7A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J8.5CAHE3/61 FAQ
1.How can I place an order for SMA5J8.5CAHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J8.5CAHE3/61 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 SMA5J8.5CAHE3/61 reliable?
The price and inventory of SMA5J8.5CAHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J8.5CAHE3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J8.5CAHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J8.5CAHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J8.5CAHE3/61?
SMA5J8.5CAHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J8.5CAHE3/61 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 SMA5J8.5CAHE3/61?
For technical support, including SMA5J8.5CAHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J8.5CAHE3/61 requirements.
6.How does Aetrix verify that SMA5J8.5CAHE3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J8.5CAHE3/61 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 SMA5J8.5CAHE3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J8.5CAHE3/61?
All SMA5J8.5CAHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J8.5CAHE3/61, 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 SMA5J8.5CAHE3/61 part is unused and in its original packaging.
Return procedure for SMA5J8.5CAHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA5J8.5CAHE3/61 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
