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Broadcom Limited ASSR-1420-002E
- Part No.:
- ASSR-1420-002E
- Manufacturer:
- Broadcom Limited
- Category:
- Solid State Relays (SSR)
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
ASSR-1420-002E.pdf
- Description:
- SSR RELAY SPST-NO 600MA 0-60V
- Quantity:
- Payment:
- Shipping:
Inventory:867
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Product details
Overview
ASSR-1420-002E from Broadcom is a dual-channel, normally-off, solid-state relay (Photo MOSFET) in a 300-mil DIP-8 package, rated for 60 V output withstand voltage, 0.6 A per channel continuous output current, and 0.2 Ω typical on-resistance at 25°C. It functions as an optically isolated SPST switch replacing electromechanical relays in signal and low-power AC/DC load switching applications.
For engineers reviewing the ASSR-1420-002E datasheet, pinout, applications, or equivalent options, key selection criteria include input LED drive compatibility (3 mA min turn-on), dual-channel isolation integrity (3750 Vrms), thermal derating behavior up to +85°C ambient, and DIP-8 mechanical fit for through-hole PCB layouts.
Technical Context
The ASSR-1420-002E integrates an AlGaAs infrared LED input stage optically coupled to a high-voltage detector circuit containing a photovoltaic diode array and driver logic that controls two discrete high-voltage MOSFETs. Its dual-channel architecture provides independent Form A (SPST, normally open) switching paths with shared optical isolation barrier.
Each channel supports bidirectional AC/DC output operation with 60 V withstand voltage and exhibits fast switching: 0.25 ms typical turn-on time and 0.04 ms typical turn-off time at 5 mA input current. Input-to-output insulation meets UL1577 (3750 Vrms/1 min) and CSA Component Acceptance Notice #5.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Configuration | Dual-channel SPST (2× Form A), electrically isolated outputs |
| Input Threshold Current | 3 mA min to reliably close contacts - enables direct CMOS/TTL drive without buffer |
| Output Withstand Voltage | 60 V - defines maximum safe steady-state voltage across output terminals |
| On-Resistance (RON) | 0.2 Ω typical at 25°C, 0.6 A - determines I²R conduction loss and self-heating under load |
| Isolation Voltage | 3750 Vrms for 1 minute - certifies safety barrier strength for reinforced insulation systems |
| Switching Speed | 0.25 ms TON, 0.04 ms TOFF typical - enables high-frequency control in data comms and telecom timing paths |
| Operating Temperature | –40°C to +85°C - validated performance range for industrial and medical environments |
Pinout & Package
ASSR-1420-002E uses a 300-mil DIP-8 package with through-hole mounting. Pin 1 is marked by dot; pins are numbered left-to-right on top row (1–4), then left-to-right on bottom row (5–8).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | LED Anode/Cathode Inputs (Channel 1 & 2) | Pins 1–2 form Channel 1 LED; pins 3–4 form Channel 2 LED - each requires series current-limiting resistor |
| 5, 6, 7, 8 | Output Terminals (Channel 1 & 2) | Pins 5–6 = Channel 1 output; pins 7–8 = Channel 2 output - fully isolated, bidirectional, no polarity sensitivity |
Key Features
| Feature | Design Value |
|---|---|
| Optical Isolation Barrier | 3750 Vrms withstand (UL1577) - eliminates ground loop noise and enables level-shifting between domains |
| Dual Independent Channels | Two isolated SPST switches in single DIP-8 footprint - reduces board space vs. two discrete single-channel relays |
| Low Input Drive Requirement | 3 mA LED forward current - compatible with microcontroller GPIO without external drivers |
| Fast Switching Performance | 0.25 ms turn-on / 0.04 ms turn-off - supports >1 kHz switching in programmable logic and test equipment |
| High Transient Immunity | >1 kV/μs dV/dt rejection - maintains state integrity during EFT/burst events in industrial environments |
Applications
| Telecom Signal Routing | Data Communications Switching |
|---|---|
|
Use Scenario: Selecting analog voice paths or DSL line conditioning circuits in access multiplexers. IC Role / Device Role / Timing Role: Solid-state relay providing galvanically isolated, bounce-free path selection between line cards and central office interfaces. Use Value: Eliminates mechanical wear and contact oxidation seen in EMRs, ensuring >10⁷ operations lifetime in 24/7 network infrastructure. |
Use Scenario: Enabling/disabling RS-485 transceiver pairs or Ethernet PHY isolation in modular switch fabrics. IC Role / Device Role / Timing Role: Bidirectional AC/DC switch isolating data lanes during hot-swap or fault recovery sequences. Use Value: 0.25 ms switching enables sub-millisecond reconfiguration of communication links without packet loss. |
| Industrial PLC I/O Modules | Medical Diagnostic Equipment |
|
Use Scenario: Controlling solenoid valves, indicator lamps, or sensor excitation circuits in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Output-stage relay replacing EMRs to drive 24 V DC loads with zero contact arcing or EMI generation. Use Value: 60 V rating and 0.6 A per channel support common industrial control voltages while maintaining Class I insulation compliance. |
Use Scenario: Isolating patient-connected ECG electrode channels or ultrasound probe multiplexing paths. IC Role / Device Role / Timing Role: Safety-critical signal path switch providing reinforced insulation barrier per IEC 60601-1 requirements. Use Value: 3750 Vrms isolation and CTI ≥175 V meet creepage/clearance mandates for BF-rated medical devices. |
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 | Dual-channel, 60 V/0.4 A, SOIC-8, 5000 Vrms isolation, higher RON (0.35 Ω typ) | Limited to lower-current DC loads; unsuitable for 0.6 A AC switching due to derating | Prefer when higher isolation voltage is required and load current ≤0.4 A |
| Vishay VO3120 | Single-channel, 60 V/1.2 A, DIP-6, 5000 Vrms, requires external gate drive for MOSFET output | Not pin-compatible; needs external components for logic-level drive and protection | Select only when single-channel operation suffices and design allows added BOM complexity |
Compared with TLP3558A and VO3120, the ASSR-1420-002E delivers balanced dual-channel integration, native CMOS-compatible drive, and verified 0.6 A AC/DC capability in a standard DIP-8 footprint-making it optimal for space-constrained industrial and telecom boards requiring drop-in EMR replacement.
Availability
ASSR-1420-002E is available at Aetrix Electronics and suitable for telecom signal routing, industrial PLC I/O modules, and medical diagnostic equipment requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant through-hole assembly.
Supply support for ASSR-1420-002E 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 Inc. is a global semiconductor leader specializing in infrastructure software, networking, and optoelectronic components for communications and industrial systems.
The ASSR-14XX series was designed as general-purpose solid-state relays to replace electromechanical and reed relays in signal switching, low-power load control, and safety-isolated interface applications across telecom, industrial, and medical markets.
FAQ
What is the maximum continuous output current per channel for ASSR-1420-002E?
The ASSR-1420-002E supports 0.6 A per channel continuous output current at TA = 25°C. Derating applies above 25°C - Figure 4 in the datasheet shows maximum allowable current drops to ~0.45 A at 60°C ambient. This rating assumes proper PCB copper area for heat dissipation and pulsed operation is not required to sustain this current.
Does ASSR-1420-002E support AC load switching?
Yes, the ASSR-1420-002E supports bidirectional AC/DC output switching. Its MOSFET-based output stage has no polarity dependence, enabling use with AC signals up to 60 V peak. The 0.7 Ω typical on-resistance (AC/DC mode) and 60 V withstand voltage make it suitable for low-power AC control such as lamp dimming or sensor excitation.
What is the minimum input current required to activate ASSR-1420-002E?
The ASSR-1420-002E turns on with a minimum input LED current of 3 mA. For guaranteed operation across –40°C to +85°C, Broadcom recommends 5–10 mA drive. At 3 mA, activation is functional but marginally specified; using ≥5 mA ensures robustness against LED aging and temperature drift over product lifetime.
Can ASSR-1420-002E be used in medical equipment?
Yes - ASSR-1420-002E meets critical medical safety requirements: 3750 Vrms input-output isolation (UL1577), CTI ≥175 V, and creepage/clearance ≥7.4 mm. It is used in BF-rated diagnostic devices where patient isolation is required. However, final system certification remains the responsibility of the medical OEM per IEC 60601-1.
What is the on-resistance of ASSR-1420-002E and how does it affect power dissipation?
The ASSR-1420-002E has 0.2 Ω typical on-resistance at 25°C with 0.6 A load, resulting in 72 mW conduction loss per channel (I²R). At elevated temperatures or higher currents, RON increases - Figure 8 shows ~0.3 Ω at 85°C. Total power dissipation must stay within the 720 mW device limit, requiring thermal-aware PCB layout for sustained operation.
ASSR-1420-002E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Broadcom Limited
- Series:
- ASSR
- Packaging:
- Tube
- Product Status:
- Active
- Mounting Type:
- Through Hole
- Circuit:
- SPST-NO (1 Form A) x 2
- Output Type:
- AC, DC
- Voltage - Input:
- 1.3VDC
- Voltage - Load:
- 0 V ~ 60 V
- Load Current:
- 600 mA
- On-State Resistance (Max):
- 1 Ohms
- Termination Style:
- PC Pin
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 8-DIP
- Approval Agency:
- CSA, UL
- Grade:
- -
- Qualification:
- -
ASSR-1420-002E FAQ
1.How can I place an order for ASSR-1420-002E through Aetrix?
Please submit a Request for Quotation (RFQ) for ASSR-1420-002E 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-1420-002E reliable?
The price and inventory of ASSR-1420-002E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ASSR-1420-002E is usually 5 days.
3.What payment methods are accepted for ASSR-1420-002E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ASSR-1420-002E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ASSR-1420-002E?
ASSR-1420-002E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ASSR-1420-002E 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-1420-002E?
For technical support, including ASSR-1420-002E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ASSR-1420-002E requirements.
6.How does Aetrix verify that ASSR-1420-002E is sourced from the original manufacturer or authorized distributors?
All ASSR-1420-002E 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-1420-002E meets industry standards.
7.What is the process for return or replacement of ASSR-1420-002E?
All ASSR-1420-002E units undergo pre-shipment inspection (PSI). If there is an issue with ASSR-1420-002E, 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-1420-002E part is unused and in its original packaging.
Return procedure for ASSR-1420-002E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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