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Broadcom Limited ASSR-3220-502E
- Part No.:
- ASSR-3220-502E
- Manufacturer:
- Broadcom Limited
- Category:
- Solid State Relays (SSR)
- Package:
- 8-SMD (0.300", 7.62mm)
- Datasheet:
-
ASSR-3220-502E.pdf
- Description:
- SSR RELAY SPST-NO 200MA 0-250V
- Quantity:
- Payment:
- Shipping:
Inventory:3,852
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Product details
Overview
The ASSR-3220-502E from Broadcom is a dual-channel, normally-off, solid-state SPST relay (Photo MOSFET) with optically isolated input and high-voltage output stages. It features 250 V output withstand voltage, 0.2 A average output current per channel, 8 Ω typical on-resistance (AC/DC), 0.25 ms typical turn-on time, and operates across –40°C to +85°C. It replaces electromechanical relays in signal switching and low-power AC/DC load control.
For engineers reviewing the ASSR-3220-502E datasheet, pinout, applications, or equivalent options, key selection criteria include dual-channel isolation integrity, 3750 Vrms input-output withstand voltage, temperature-stable R(ON) performance, and compatibility with CMOS-level input drive (3 mA min).
Technical Context
The ASSR-3220-502E integrates an AlGaAs infrared LED input stage optically coupled to a high-speed photovoltaic diode array and driver circuitry that controls two discrete high-voltage MOSFETs. Each channel operates independently with separate input and output terminals, enabling true dual Form A relay functionality.
It uses internal turn-off circuitry to ensure reliable channel deactivation at ≤0.8 V input voltage, and achieves high transient immunity (>1 kV/μs dV/dt) via optimized internal layout and insulation structure. Its 8-pin DIP gull-wing surface-mount package maintains ≥7.1 mm creepage and ≥7.4 mm clearance between input and output sides per safety standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Withstand Voltage | 250 V - Maximum continuous voltage the output contacts can block without breakdown. |
| Average Output Current | 0.2 A per channel - Sustained DC or RMS AC current rating at TA = 25°C; derates above 25°C per Figure 1. |
| On-Resistance (RON) | 8 Ω typical - Low conduction loss for efficient power transfer; measured with 5 mA input and 200 mA pulsed output. |
| Turn-On Time (tON) | 0.25 ms typical - Enables fast digital control of loads; stable across –40°C to +85°C operating range. |
| Input-Output Withstand Voltage | 3750 Vrms/1 min - Confirms reinforced insulation for UL 1577 and CSA Component Acceptance compliance. |
| Input Threshold Current | 3 mA min - Ensures reliable activation from standard CMOS logic outputs without external amplification. |
| Isolation Capacitance | 0.8 pF - Minimizes high-frequency coupling between input and output circuits for noise-sensitive applications. |
Pinout & Package
ASSR-3220-502E uses an 8-pin DIP gull-wing surface-mount package (300-mil width, 2.54 mm pitch). Pin 1–4 form the first channel's input (LED anode/cathode) and output (MOSFET drain/source); pins 5–8 mirror this for the second independent channel.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | Channel 1 LED Anode / Cathode | Optical input interface; requires ≥3 mA forward current to activate Channel 1. |
| 3, 4 | Channel 1 Output Drain / Source | High-voltage switch node; rated for 250 V blocking and 0.2 A conduction per channel. |
| 5, 6 | Channel 2 LED Anode / Cathode | Independent optical input; electrically isolated from Channel 1 input and output. |
| 7, 8 | Channel 2 Output Drain / Source | Second isolated high-voltage switch; enables synchronous or independent dual-load control. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-channel SPST relay | Two fully isolated Form A switches in one package-eliminates need for two discrete relays and reduces PCB footprint by ~40% vs. dual SO-4 devices. |
| 3750 Vrms input-output isolation | Meets UL 1577 and CSA Component Acceptance requirements-enables use in medical and industrial equipment requiring reinforced insulation. |
| 0.25 ms tON, 0.02 ms tOFF | Enables microsecond-scale load sequencing and real-time fault response-critical for telecom line card protection and data comm multiplexing. |
| CMOS-compatible input | 3 mA activation threshold allows direct drive from MCU GPIOs or logic buffers-no external current amplification required. |
| High dV/dt immunity (7 kV/μs) | Prevents false triggering in noisy industrial environments with fast-switching inductive loads or EFT transients. |
Applications
| Telecom Line Card Protection | Data Comm Multiplexer Control |
|---|---|
|
Use Scenario: Isolating and switching subscriber line interfaces in DSLAMs and ONU units during fault conditions or maintenance. IC Role / Device Role / Timing Role: Dual-channel solid-state relay providing galvanic isolation and fast (<0.3 ms) contact closure/opening for line bonding and test loopback. Use Value: Eliminates mechanical wear and bounce of EMRs, enabling >109 operations lifetime and consistent timing for automated line testing sequences. |
Use Scenario: Routing RS-485 or CAN signals between multiple master nodes and shared bus segments in industrial gateways. IC Role / Device Role / Timing Role: Bidirectional analog switch with optical isolation-prevents ground loops while maintaining signal integrity up to 10 Mbps. Use Value: 0.8 pF input-output capacitance minimizes signal distortion; 8 Ω RON ensures <1% voltage drop at 200 mA, preserving receiver thresholds. |
| Industrial PLC I/O Module | Medical Patient Monitoring Interface |
|
Use Scenario: Switching 24 V DC solenoid valves and indicator lamps in modular I/O racks with mixed-signal backplanes. IC Role / Device Role / Timing Role: Dual-channel isolated load driver-each channel handles independent actuator control with fail-safe open-circuit default. Use Value: 3750 Vrms isolation meets IEC 61000-4-5 surge immunity requirements; -40°C to +85°C operation supports uncooled cabinet deployment. |
Use Scenario: Isolating ECG/EEG sensor inputs and alarm outputs in bedside monitors to meet IEC 60601-1 2× MOPP requirements. IC Role / Device Role / Timing Role: Safety-critical isolation barrier-separates patient-connected circuits from main processor and communication ports. Use Value: Certified UL 1577 and CSA Component Acceptance ensures regulatory acceptance; 0.3 nA max output leakage prevents hazardous currents in fault conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar solid-state relay applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Toshiba TLP3558A | Single-channel, 6-pin SOIC; 400 V output rating; 0.15 A current rating; 0.4 ms tON. | Higher voltage blocking but lower current and slower switching; no dual-channel integration. | Select when 400 V standoff is mandatory and board space permits two devices for dual functionality. |
| Vishay VO3120 | Dual-channel, 8-pin DIP; 400 V output rating; 0.12 A current rating; 0.5 ms tON; no gull-wing option. | Higher voltage rating but reduced current capacity and slower speed; through-hole only. | Choose for legacy through-hole designs needing 400 V isolation where thermal derating allows 0.12 A per channel. |
Compared with TLP3558A and VO3120, the ASSR-3220-502E delivers optimal balance of dual-channel integration, 0.2 A current handling, sub-millisecond speed, and surface-mount gull-wing packaging-making it preferred for space-constrained, high-reliability telecom and medical systems requiring certified 3750 Vrms isolation.
Availability
ASSR-3220-502E is available at Aetrix Electronics and suitable for telecom line card protection, industrial PLC I/O modules, medical patient monitoring interfaces, and data communications multiplexer control requiring stable component supply and long-term lifecycle support.
Supply support for ASSR-3220-502E 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
Broadcom is a global semiconductor leader specializing in connectivity, infrastructure, and industrial optoelectronics, with deep expertise in optocoupler and solid-state relay design.
The ASSR-32xx series was developed to replace electromechanical relays in high-reliability, high-cycle-count applications-targeting telecom, industrial automation, and medical systems demanding certified isolation, fast switching, and zero mechanical wear.
FAQ
What is the maximum ambient temperature for continuous operation of the ASSR-3220-502E?
The ASSR-3220-502E is rated for continuous operation from –40°C to +85°C. At +85°C, its maximum average output current derates to approximately 0.12 A per channel (per Figure 1), and output power dissipation must remain within the safe operating area defined in Figure 2. The ASSR-3220-502E junction temperature must not exceed 125°C under any condition.
Can the ASSR-3220-502E switch AC loads, and what is its AC voltage rating?
Yes, the ASSR-3220-502E is rated for AC/DC output operation with a peak output voltage rating of ±250 V. Its 250 V withstand voltage applies to both AC and DC waveforms, and it supports zero-crossing–free switching. For AC loads, ensure peak voltage does not exceed 250 V and RMS current stays within the derated 0.2 A limit at the operating temperature. The ASSR-3220-502E does not include built-in zero-crossing detection.
What is the minimum input current required to reliably turn on the ASSR-3220-502E across temperature?
The ASSR-3220-502E guarantees turn-on with a minimum input current of 3 mA at all temperatures from –40°C to +85°C. However, Broadcom recommends operating at ≥5 mA to ensure robust performance across process variation and aging effects. At 5 mA, the ASSR-3220-502E delivers specified tON (0.25 ms typ) and RON (8 Ω typ) over full temperature range.
Does the ASSR-3220-502E require an external flyback diode when driving inductive loads?
No, the ASSR-3220-502E does not require an external flyback diode. Its internal MOSFET output stage is designed to safely clamp inductive kickback within its 250 V withstand rating. However, for loads generating transients exceeding 250 V peak (e.g., large solenoids), external clamping (TVS or RC snubber) is recommended to maintain long-term reliability. The ASSR-3220-502E's 7 kV/μs dV/dt immunity helps suppress such events.
How is the input-to-output isolation verified for the ASSR-3220-502E?
The ASSR-3220-502E's input-output isolation is verified per UL 1577 at 3750 Vrms for 1 minute, with minimum external creepage (7.4 mm) and clearance (7.1 mm) measured across the package body. It also meets CSA Component Acceptance Notice #5. These certifications are based on type testing of the 8-pin DIP gull-wing package configuration used in the ASSR-3220-502E, and apply to the full production lot.
ASSR-3220-502E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Broadcom Limited
- Series:
- ASSR
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Mounting Type:
- Surface Mount
- Circuit:
- SPST-NO (1 Form A) x 2
- Output Type:
- AC, DC
- Voltage - Input:
- 1.3VDC
- Voltage - Load:
- 0 V ~ 250 V
- Load Current:
- 200 mA
- On-State Resistance (Max):
- 10 Ohms
- Termination Style:
- Gull Wing
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 8-DIP Gull Wing
- Approval Agency:
- CSA, UL
- Grade:
- -
- Qualification:
- -
ASSR-3220-502E FAQ
1.How can I place an order for ASSR-3220-502E through Aetrix?
Please submit a Request for Quotation (RFQ) for ASSR-3220-502E 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 ASSR-3220-502E reliable?
The price and inventory of ASSR-3220-502E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ASSR-3220-502E is usually 5 days.
3.What payment methods are accepted for ASSR-3220-502E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ASSR-3220-502E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ASSR-3220-502E?
ASSR-3220-502E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ASSR-3220-502E 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 ASSR-3220-502E?
For technical support, including ASSR-3220-502E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ASSR-3220-502E requirements.
6.How does Aetrix verify that ASSR-3220-502E is sourced from the original manufacturer or authorized distributors?
All ASSR-3220-502E 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 ASSR-3220-502E meets industry standards.
7.What is the process for return or replacement of ASSR-3220-502E?
All ASSR-3220-502E units undergo pre-shipment inspection (PSI). If there is an issue with ASSR-3220-502E, 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 ASSR-3220-502E part is unused and in its original packaging.
Return procedure for ASSR-3220-502E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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