My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMA5J8.5HE3/61
- Part No.:
- SMA5J8.5HE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J8.5HE3/61.pdf
- Description:
- TVS DIODE 8.5VWM 15.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,901
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMA5J8.5HE3/61 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, designed for high-energy surge protection on power and signal lines. It features a 8.5 V stand-off voltage (VWM), 9.44–10.4 V breakdown voltage (VBR at 1 mA), 14.4 V clamping voltage (VC) at 34.7 A peak pulse current, and 500 W peak pulse power rating with 10/1000 µs waveform - used to protect automotive ECUs, industrial sensor interfaces, and DC power rails against inductive switching transients.
For engineers reviewing the SMA5J8.5HE3/61 datasheet, SMA5J8.5HE3/61 pinout, SMA5J8.5HE3/61 application, or SMA5J8.5HE3/61 equivalent, key selection criteria include its AEC-Q101 qualification, 150 °C max junction temperature, low incremental surge resistance, and RoHS-compliant HE3 whisker-tested terminations - critical for automotive-grade reliability and automated SMT placement.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: it remains high-impedance below 8.5 V and rapidly avalanches above ~9.44 V to divert surge current away from downstream circuitry. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and repeatable clamping performance under repetitive transients.
The device is rated for 500 W peak pulse power (10/1000 µs), supports 40 A non-repetitive forward surge current (8.3 ms half-sine), and exhibits 80 °C/W junction-to-ambient thermal resistance when mounted on 5.0 mm × 5.0 mm copper pads - enabling robust thermal management in compact PCB layouts.
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 - precise avalanche threshold defining turn-on consistency |
| VC @ IPPM | 14.4 V at 34.7 A - clamping voltage limiting protected circuit stress during 500 W surge |
| PPPM | 500 W - peak pulse power handling capability per 10/1000 µs standard waveform |
| IFSM | 40 A - surge current rating for 8.3 ms half-sine wave, supporting inrush and load-dump events |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| Leakage @ VWM | <1.0 µA - minimal standby power loss and signal integrity impact on sensitive analog/sensor lines |
Pinout & Package
DO-214AC (SMA) surface-mount package: molded epoxy case with matte tin-plated leads, 0.208" × 0.157" footprint, MSL Level 1 (260 °C reflow), UL 94 V-0 rated. Cathode indicated by band on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-impedance return path; completes shunt path during avalanche |
| Cathode (banded end) | High-side connection point | Connected to protected line (e.g., 12 V rail); defines polarity-sensitive clamping direction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensor protection |
| Glass passivated junction | Ensures long-term stability of VBR and low parameter drift across temperature and life cycles |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a/5a) |
| JESD 201 Class 2 whisker resistance (HE3) | Prevents tin whisker growth under thermal cycling and humidity, critical for automotive long-life reliability |
| MSL Level 1 moisture sensitivity | Enables standard SMT reflow without baking, reducing manufacturing cost and process complexity |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply lines in engine control units (ECUs) against load dump and inductive switching spikes per ISO 16750-2. IC Role / Device Role / Timing Role: Unidirectional shunt TVS diode placed between battery rail and ground, clamping transients within safe limits for downstream regulators and microcontrollers. Use Value: Limits peak voltage to ≤14.4 V during 34.7 A surges, preventing latch-up or permanent damage to 16 V-rated LDOs and CAN transceivers. | Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loops) of pressure/temperature sensors in factory automation systems. IC Role / Device Role / Timing Role: Bidirectional-capable protection element (though unidirectional here) placed across sensor output and return, suppressing ESD and cable discharge events. Use Value: Sub-1 µA leakage at 8.5 V preserves loop accuracy; 14.4 V clamping prevents op-amp input stage saturation during 500 W transients. |
| DC-DC Converter Input Protection | Consumer Power Adapter Surge Suppression |
Use Scenario: Front-end protection for buck converter inputs in telecom power supplies exposed to lightning-induced surges on AC/DC adapter outputs. IC Role / Device Role / Timing Role: Primary overvoltage clamp on +5 V or +12 V input rail, absorbing energy before it reaches controller IC and MOSFET gate drivers. Use Value: 500 W rating handles multi-pulse surge stress; 80 °C/W θJA allows thermal design with minimal copper area on cost-sensitive boards. | Use Scenario: Secondary-side surge suppression in USB-C PD adapters where compact size and reliability are mandatory. IC Role / Device Role / Timing Role: Unidirectional TVS on 5–20 V output rails to meet IEC 61000-4-5 Level 3 (1 kV/0.5 kA) immunity requirements. Use Value: DO-214AC footprint enables high-density layout; HE3 termination ensures solder joint integrity after repeated thermal cycling in consumer field use. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J8.5A-E3/61 | Same electrical specs but commercial-grade (non-AEC-Q101); JESD 201 Class 1A whisker test | Lacks automotive qualification; suitable for industrial/commercial power supplies only | Select when AEC-Q101 is not required and cost optimization is prioritized |
| SMC5J8.5AHE3/61 | Same VWM/VC, but larger DO-214AB (SMC) package; higher IPPM (43.5 A) and lower Rsurge | Better thermal dissipation and surge margin; requires larger PCB footprint | Choose when system-level surge testing exceeds 500 W or board space permits larger package |
Compared with SMA5J8.5A-E3/61, the SMA5J8.5HE3/61 adds AEC-Q101 qualification and enhanced whisker resistance for automotive deployment; versus SMC5J8.5AHE3/61, it trades surge margin and thermal headroom for space-constrained DO-214AC packaging - making it optimal for compact, qualified automotive modules.
Availability
SMA5J8.5HE3/61 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and DC-DC converter input protection requiring stable component supply and AEC-Q101 compliance.
Supply support for SMA5J8.5HE3/61 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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific performance.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained, high-reliability environments - particularly automotive, industrial, and telecom infrastructure where robustness against ISO 7637 and IEC 61000-4-5 threats is mandatory.
FAQ
What is the clamping voltage of the SMA5J8.5HE3/61 under full-rated surge conditions?
The SMA5J8.5HE3/61 has a maximum clamping voltage (VC) of 14.4 V at its rated peak pulse current of 34.7 A, measured with a 10/1000 µs waveform. This value ensures downstream components see limited overvoltage stress during standardized surge events. The SMA5J8.5HE3/61 maintains this clamping performance across its operational temperature range and after repeated surges due to its glass-passivated junction structure.
Is the SMA5J8.5HE3/61 suitable for automotive applications?
Yes, the SMA5J8.5HE3/61 is AEC-Q101 qualified and specifically designed for automotive use, including engine control units, body electronics, and ADAS sensor protection. Its HE3 suffix denotes JESD 201 Class 2 whisker resistance and RoHS compliance, meeting stringent automotive reliability and process requirements. The SMA5J8.5HE3/61 operates up to +150 °C junction temperature, supporting under-hood deployment.
How does the SMA5J8.5HE3/61 differ from the SMA5J8.5A-E3/61?
The SMA5J8.5HE3/61 and SMA5J8.5A-E3/61 share identical electrical specifications (VWM, VBR, VC, PPPM) but differ in qualification and plating: SMA5J8.5HE3/61 is AEC-Q101 qualified with JESD 201 Class 2 whisker resistance, while SMA5J8.5A-E3/61 is commercial-grade with Class 1A. Both use DO-214AC packaging and RoHS-compliant matte tin terminations.
What is the maximum leakage current of the SMA5J8.5HE3/61 at its stand-off voltage?
The SMA5J8.5HE3/61 exhibits a maximum reverse leakage current (ID) of 1.0 µA at its 8.5 V stand-off voltage (VWM) and 25 °C ambient temperature. This ultra-low leakage preserves signal integrity on sensitive analog lines and minimizes standby power loss in battery-powered systems. The SMA5J8.5HE3/61 maintains tight leakage control across its full operating temperature range.
Does the SMA5J8.5HE3/61 require special PCB layout considerations?
Yes - for optimal thermal and surge performance, the SMA5J8.5HE3/61 should be mounted on minimum 5.0 mm × 5.0 mm copper pads per terminal, per Vishay's recommended pad layout. This reduces thermal resistance (RθJA = 80 °C/W) and improves energy dissipation. Short, direct traces to ground and protected line minimize inductance, preserving fast response (<1 ns) and clamping effectiveness. The SMA5J8.5HE3/61 cathode band must align with the high-side net.
SMA5J8.5HE3/61 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 8.5V
- Voltage - Breakdown (Min):
- 9.44V
- Voltage - Clamping (Max) @ Ipp:
- 15.9V
- Current - Peak Pulse (10/1000µs):
- 31.4A
- 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)
SMA5J8.5HE3/61 FAQ
1.How can I place an order for SMA5J8.5HE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J8.5HE3/61 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 SMA5J8.5HE3/61 reliable?
The price and inventory of SMA5J8.5HE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J8.5HE3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J8.5HE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J8.5HE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J8.5HE3/61?
SMA5J8.5HE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J8.5HE3/61 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 SMA5J8.5HE3/61?
For technical support, including SMA5J8.5HE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J8.5HE3/61 requirements.
6.How does Aetrix verify that SMA5J8.5HE3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J8.5HE3/61 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 SMA5J8.5HE3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J8.5HE3/61?
All SMA5J8.5HE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J8.5HE3/61, 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 SMA5J8.5HE3/61 part is unused and in its original packaging.
Return procedure for SMA5J8.5HE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA5J8.5HE3/61 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 …
